CN101151003B - Body organ expansion instrument - Google Patents

Body organ expansion instrument Download PDF

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Publication number
CN101151003B
CN101151003B CN2006800100361A CN200680010036A CN101151003B CN 101151003 B CN101151003 B CN 101151003B CN 2006800100361 A CN2006800100361 A CN 2006800100361A CN 200680010036 A CN200680010036 A CN 200680010036A CN 101151003 B CN101151003 B CN 101151003B
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China
Prior art keywords
mentioned
side pipe
support
expansion instrument
end side
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CN2006800100361A
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CN101151003A (en
Inventor
松冈江美
森下启太郎
森内阳助
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Terumo Corp
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Terumo Corp
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Priority claimed from JP2005287689A external-priority patent/JP4928764B2/en
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to CN201210558811.4A priority Critical patent/CN103070740B/en
Priority claimed from PCT/JP2006/306286 external-priority patent/WO2006104143A1/en
Publication of CN101151003A publication Critical patent/CN101151003A/en
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Abstract

A stent delivery device includes a distal-side tube having a guide wire lumen; a proximal-side tube whose distal portion is fixed to a proximal portion of the distal-side tube; a cylindrical member which encloses a distal side of the distal-side tube and is slidable toward a proximal end of the distal-side tube; a stent accommodated in the cylindrical member; and a pulling member 6 for moving the cylindrical member toward a proximal side of the stent delivery device. The distal-side tube has a proximal-side opening which is open at the proximal side of the distal-side tube; and a stent-locking portion for preventing the stent from moving to the proximal side of the stent delivery device. The outer diameter of the proximal-side tube is set smaller than that of a portion, having a maximum diameter, which is disposed in a region of the stent delivery device which is distal from the proximal-side tube.

Description

Body organ expansion instrument
Technical field
The present invention relates to body organ expansion instrument, it is used for keeping somewhere support in blood vessel, bile duct, trachea, esophagus, urethra, digestive tract and being formed on narrow or choking portion in the organism of other organs etc.
Background technology
In the past, proposed body organ expansion instrument, it is used for support is kept somewhere in the narrow of the organism tube chamber such as blood vessel, bile duct, esophagus, trachea, urethra, digestive tract and other organs or body cavity or choking portion to guarantee the space of tube chamber or body cavity.
Support as consisting of above-mentioned body organ expansion instrument has balloon expandable stent and Self-expanded stent according to function and placement method.
Balloon expandable stent does not have the function of support self expansion, but for support is kept somewhere in target site, after for example support being inserted into target site, make sacculus be positioned at support and make balloon expandable, the expansionary force by sacculus makes support expansion (plastic deformation) thereby fixes with the inner surface close contact of target site.
Such support need to carry out the expansion operation of support as described above, but owing to also support directly can be installed and is retained on the sacculus of contraction, so do not have any problem about indwelling.But, because support self does not have expansionary force, so because the diameters such as pressure of blood vessel diminish in time gradually, narrow probability occurs again high.
In contrast, Self-expanded stent has the function of support autogenous shrinkage and expansion.For this support is retained in the target location, after inserting target site with contraction state, remove the stress of load be used to keeping contraction state.For example, support is being shunk be accommodated in external diameter than in the little sheath of the internal diameter of target site, and after the top that makes this sheath arrives target site, support is released from sheath.So the support that is pushed out is owing to being discharged its stress load and be disengaged from sheath, thereby returns to perisystolic shape and expand.Thus, fix with the inner surface close contact of target site.
Such support is because support self has expansionary force, so do not need the expansion operation as balloon expandable stent, also can not diminishing gradually because of the pressure equal diameter of blood vessel, narrow problem occurs again.
And, it is said that Self-expanded stent generally is difficult to be retained in the tram than balloon expandable stent.Its reason is, after support is configured in the narrow of target, because filling liquid in the sacculus just, so support does not move forward and backward when expansion.And the structure of the induction system of Self-expanded stent is: take in and be strapped in support between the inner and outer tubes, and fastening section is set is used for the mobile restriction of the support support base end side in inner tube, by coming the constraint of releasing bracket so that it carries out self expandable to base end side pulling outer tube.At this moment and since outer tube endoceliac lax, outer tube and body cavity or and conduit that outer tube is imported between friction or outer tube with for the friction between the valve of the equipment that is called as conductor of import system in body etc., support easily advances when expanding.
For example, at the flat 11-503054 communique of Japanese Unexamined Patent Application Publication (patent documentation 1) and WO96/31174 communique (patent documentation 2: proposed a kind of system that is consisted of by three tubular parts the open communique in the world of patent documentation 1).This system also has outermost tubes except inner and outer tubes.Support is contained and is strapped between the inner and outer tubes, and outermost tubes and inner tube become irremovable structure external being fixed.According to said structure, although between outermost tubes and body cavity and the valve friction is arranged, owing to only spur outer tube in order to expand, so the position movement of support is minimum.
In addition, the applicant proposed Japanese kokai publication hei 8-252321 communique (patent documentation 3).In the induction system of this Self-expanded stent, the support-moving of (when emitting) also is minimum during the support expansion.
As described in the flat 11-503054 of above-mentioned Japanese Unexamined Patent Application Publication number and Japanese kokai publication hei 8-252321 communique, the induction system of Self-expanded stent is to extend to " wearing seal wire type (over the wire) " that the guidewire lumen (guide wirelumen) on top is extended from cardinal extremity.This is because on the basis for the structure of emitting support, lateral sheathed is essential to the movement of base end side.
When implementing the biological intracorporeal indwelling art of support, the different stent delivery systems such as external diameter of (when emitting) when preparing a plurality of external diameters, support expansion.And, sometimes after being inserted in the blood vessel, the 1st stent delivery system is replaced by other system.In wearing seal wire type stent delivery system, guidewire lumen is from penetrating into foremost rearmost end, therefore, and for the seal wire that will need in the system introducing body more than the twice of system's total length.Therefore, the replacing spended time of system.
In addition, just seeking recently to make support be retained in the technology of more close tip side, thereby the thinner stent delivery system of desired diameter.In the flat 11-503054 of Japanese Unexamined Patent Application Publication number invention, owing to use three root tubular parts, so be difficult to make variation in diameter.
Patent documentation 1: the flat 11-503054 communique of Japanese Unexamined Patent Application Publication;
Patent documentation 2:WO96/31174 communique;
Patent documentation 3: Japanese kokai publication hei 8-252321 communique;
Patent documentation 4: Japanese Unexamined Patent Application Publication 2003-521307 communique;
Patent documentation 5:WO01/54614 communique;
Patent documentation 6: TOHKEMY 2004-130074 communique;
Patent documentation 7: Japanese Unexamined Patent Application Publication 2004-527316 communique;
Patent documentation 8:WO2002/087470.
Summary of the invention
The first purpose of the present invention provides a kind of body organ expansion instrument that adopts Self-expanded stent, this body organ expansion instrument is when carrying out support indwelling operation, can easily be replaced by the operation of other body organ expansion instrument, and further diameter reduction.
In addition, the structure of the induction system of Self-expanded stent is, between inner and outer tubes, take in and fetter as described above support, be provided for the fastening section that limit bracket moves at the support base end side of inner tube, by to base end side pulling outer tube and the constraint of releasing bracket makes it carry out self expandable.At this moment, the operator need to be fixed on constant position with inner tube with a hands, pulls moving outer tube with another, so that can not advance in the indwelling position of support.And, in the situation that by means of endoscope biliary tract prosthesis is retained in the bile duct, owing to inner tube can't be fixed on constant position, so will carry out following operation, that is: while keeping bit by bit expandable stent of endoscope, and come the indwelling position of adjusting pole by the pulling outer tube.For solving the bad situation of this operability, invented the system with casing assembly.
At Japanese Unexamined Patent Application Publication 2003-521307 communique (patent documentation 4) and WO01/54614 communique (patent documentation 5: in the invention open communique in the world of patent documentation 4), proposed a kind of shell with sliding part that can parallel.This shell is such system: the front end inner shafts is installed in enclosure, and the peri position end of front end outer tube is connected with the sliding part that can move along its length in the enclosure, slides releasing bracket by making sliding part to the peri position direction.In Japanese Unexamined Patent Application Publication 2003-521307 communique, although can operate with a hands, but in fact, in this system, use owing to this shell must be fixed on the foot such as the stationary plane of operating-table etc. or patient, be displaced to undesirable position so operability indwelling positions poor and medical instruments might occur.And, because the length of shell is necessary for more than the twice of sliding part length, thereby cause casing assembly relatively to become large.
In TOHKEMY 2004-130074 communique (patent documentation 6), a kind of casing assembly that has identical essential structure and have the different two or more operator scheme of speed has been proposed.But in this system, also the length owing to shell is necessary for more than the twice of slide mass length, thereby causes casing assembly relatively to become large, thereby is difficult to operate with a hands.
At Japanese Unexamined Patent Application Publication 2004-527316 communique (patent documentation 7) and WO2002/087470 (patent documentation 8: in the invention open communique in the world of patent documentation 7), seal wire in the peri position end of front end outer tube and the shell is connected, by ratchet mechanism this seal wire is gently retreated with releasing bracket, can operate by enough handss by such system.But in this system, also needing length is the above casing assembly of twice of the twice stent length above, that in other words should discharge of guidewire length.
The second purpose of the present invention provides a kind of body organ expansion instrument that adopts self expandable type support, this body organ expansion instrument is when carrying out support indwelling operation, can easily be replaced by the operation of other body organ expansion instrument, and the position movement of support can not occur when keeping somewhere.
The first purpose of the present invention is to realize by following body organ expansion instrument.
A kind of body organ expansion instrument comprises: the front end side pipe with guidewire lumen; Leading section is fixed on the cardinal extremity side pipe of the base end part of above-mentioned front end side pipe; Surrounding the front of above-mentioned front end side pipe and support that proximal direction that can the forward end side pipe slides takes in and uses cartridge; Being accommodated in above-mentioned support takes in the support in the cartridge; And one the end be fixed on above-mentioned support and take in on the cartridge and the draught line that in above-mentioned cardinal extremity side pipe, extends, draw above-mentioned draught line by the base end side to above-mentioned base end side pipe, above-mentioned support is taken in cartridge to be moved to base end side, it is characterized in that, above-mentioned front end side pipe comprises: at the base end side opening of above-mentioned front end side pipe and the base end side opening that is communicated with above-mentioned guidewire lumen; Be positioned at the front of above-mentioned front end side pipe and take in cardinal extremity butt with the above-mentioned support of cartridge with being accommodated in above-mentioned support, to limit above-mentioned support to the bracket clamp bonding part of the movement of base end side; Above-mentioned support forms the general cylindrical shape shape, and is accommodated in above-mentioned support with the state that is compressed to central axis direction and takes in in the cartridge, and above-mentioned support is expanded laterally when keeping somewhere in organism and returned to shape before the compression; And, to compare with the external diameter than the maximum gauge part of the forward one end side portion of above-mentioned cardinal extremity side pipe of above-mentioned body organ expansion instrument, the external diameter of above-mentioned cardinal extremity side pipe is little.
The second purpose of the present invention is to realize by following body organ expansion instrument.
A kind of body organ expansion instrument comprises: the front end side pipe with guidewire lumen; Leading section is fixed on the cardinal extremity side pipe of the base end part of above-mentioned front end side pipe; Surrounding the front of above-mentioned front end side pipe and support that proximal direction that can the forward end side pipe slides takes in and uses cartridge; Being accommodated in above-mentioned support takes in the support in the cartridge; And one the end be fixed on above-mentioned support and take in on the cartridge and the draught line that in above-mentioned cardinal extremity side pipe, extends, draw above-mentioned draught line by the base end side to above-mentioned base end side pipe, above-mentioned support is taken in cartridge to be moved to base end side, it is characterized in that, above-mentioned front end side pipe comprises: at the base end side opening of above-mentioned front end side pipe and the base end side opening that is communicated with above-mentioned guidewire lumen; Be positioned at the front of above-mentioned front end side pipe and take in cardinal extremity butt with the above-mentioned support of cartridge with being accommodated in above-mentioned support, to limit above-mentioned support to the bracket clamp bonding part of the movement of base end side; Above-mentioned support forms the general cylindrical shape shape, and is accommodated in above-mentioned support with the state that is compressed to central axis direction and takes in in the cartridge, and above-mentioned support is expanded laterally when keeping somewhere in organism and returned to shape before the compression; And, having operating portion at the base end part of above-mentioned cardinal extremity side pipe, aforesaid operations section has be used to the above-mentioned draught line of reeling so that above-mentioned support is taken in the draught line winding mechanism that moves to base end side with cartridge.
Description of drawings
Fig. 1 is the local elliptical front view of the body organ expansion instrument of embodiments of the invention.
Fig. 2 is that the local elliptical of body organ expansion instrument shown in Figure 1 amplifies outside drawing.
Fig. 3 is near the amplification view the leading section of body organ expansion instrument shown in Figure 1.
Fig. 4 is near the amplification view the base end part of body organ expansion instrument shown in Figure 1.
Fig. 5 is that the employed support of body organ expansion instrument of the present invention is taken in the outside drawing with an example of cartridge.
Fig. 6 is the amplification view along the A-A line of Fig. 2.
Fig. 7 is the amplification view along the B-B line of Fig. 2.
Fig. 8 is near the amplification view of base end part of other embodiment of body organ expansion instrument of the present invention.
Fig. 9 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 10 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.
Figure 11 is near the amplification view the leading section of body organ expansion instrument shown in Figure 10.
Figure 12 is the key diagram be used to the effect that body organ expansion instrument shown in Figure 10 is described.
Figure 13 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.
Figure 14 is the amplification view along the C-C line of Figure 13.
Figure 15 is the amplification view along the D-D line of Figure 13.
Figure 16 is the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.
Figure 17 is the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.
Figure 18 is the amplification view of the leading section of body organ expansion instrument shown in Figure 17.
Figure 19 is the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.
Figure 20 is the amplification view along the E-E line of Figure 19.
Figure 21 is the amplification view along the F-F line of Figure 19.
Figure 22 is the amplification view along the G-G line of Figure 19.
Figure 23 is the axonometric chart of an example of indwelling support in the employed body cavity of body organ expansion instrument of the present invention.
Figure 24 is the local elliptical front view of the body organ expansion instrument of embodiments of the invention.
Figure 25 is near the amplification outside drawing the leading section of body organ expansion instrument shown in Figure 24.
Figure 26 is near the amplification view the leading section of body organ expansion instrument shown in Figure 24.
Figure 27 is near the amplification outside drawing the operating portion of body organ expansion instrument shown in Figure 24.
Figure 28 is the amplification view along the H-H line of Figure 25.
Figure 29 is the amplification view along the I-I line of Figure 25.
Figure 30 is near the right view the operating portion of body organ expansion instrument shown in Figure 24.
Figure 31 is the upward view of the operating portion of body organ expansion instrument shown in Figure 24.
Figure 32 is the amplification view along the J-J line of Figure 30.
Figure 33 is the amplification view along the K-K line of Figure 32.
Figure 34 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 35 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 36 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 37 is near the schematic amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.
Figure 38 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.
Figure 39 is the amplification view along the L-L line of Figure 38.
Figure 40 is the amplification view along the M-M line of Figure 38.
Figure 41 is near the amplification outside drawing of operating portion of the body organ expansion instrument of other embodiment of the present invention.
Figure 42 is near the amplification view the operating portion of body organ expansion instrument shown in Figure 41.
Figure 43 is be used near the in-built key diagram the operating portion that body organ expansion instrument shown in Figure 41 is described.
Figure 44 is the local elliptical front view of the body organ expansion instrument of embodiments of the invention.
Figure 45 is near the amplification outside drawing the operating portion of body organ expansion instrument shown in Figure 44.
Figure 46 is near the enlarged left view the operating portion of body organ expansion instrument shown in Figure 44.
Figure 47 be body organ expansion instrument shown in Figure 44 operating portion look up enlarged drawing.
Figure 48 is the amplification view along the O-O line of Figure 46.
Figure 49 is the amplification view along the P-P line of Figure 48.
Figure 50 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 51 is the key diagram be used to the effect that body organ expansion instrument of the present invention is described.
Figure 52 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.
Figure 53 is near the enlarged front view of operating portion of the body organ expansion instrument of other embodiment of the present invention.
Figure 54 is near the left view of operating portion of the body organ expansion instrument shown in Figure 53.
Figure 55 is near the enlarged front view of operating portion of the body organ expansion instrument of other embodiment of the present invention.
Figure 56 is near the rearview of operating portion of the body organ expansion instrument shown in Figure 55.
Figure 57 is near the in-built key diagram the operating portion of the body organ expansion instrument shown in explanation Figure 55.
Figure 58 is near the in-built key diagram the operating portion of the body organ expansion instrument shown in explanation Figure 55.
Figure 59 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.
Figure 60 is near the amplification view of leading section of the body organ expansion instrument shown in Figure 59.
Figure 61 is the amplification view along the Q-Q line of Figure 59.
Figure 62 is near the enlarged front view of operating portion of the body organ expansion instrument of other embodiment of the present invention.
Figure 63 is the in-built key diagram for the operating portion of the body organ expansion instrument shown in explanation Figure 62.
Figure 64 is the in-built key diagram for the operating portion of the body organ expansion instrument shown in explanation Figure 62.
The specific embodiment
Utilize embodiment shown in the drawings that body organ expansion instrument of the present invention is described.
Body organ expansion instrument 1 of the present invention comprises: the front end side pipe 2 with guidewire lumen 21; Leading section is fixed in the cardinal extremity side pipe 4 on the base end part of front end side pipe 2; But the support that the front of encirclement front end side pipe 2 and the proximal direction of forward end side pipe 2 slide is taken in cartridge 5; Being accommodated in support takes in the support 3 in the cartridge 5; One end is fixed on support and takes in on the cartridge 5 and in the 4 interior extensions of cardinal extremity side pipe, and makes support take in the traction element 6 that moves to base end side with cartridge 5 by the base end side traction to the cardinal extremity side pipe.
And front end side pipe 2 comprises: at the base end side opening 23 of base end side opening to be communicated with guidewire lumen 21 of front end side pipe 2; Be positioned at front end side pipe 2 front and be incorporated in support and take in the cardinal extremity butt of the support 3 of cartridge 5 with limit bracket 3 to bracket clamp bonding part 22 that base end side moves.Support 3 forms general cylindrical shape, and is accommodated in the state that is compressed to central axis direction and takes in in the cartridge 5, and expands laterally when keeping somewhere in organism and return to shape before the compression.And, to compare with the external diameter than the maximum gauge part of the forward distolateral part of the cardinal extremity side pipe 4 of body organ expansion instrument 1, the external diameter of cardinal extremity side pipe 4 is little.
By body organ expansion instrument of the present invention, even use the body organ expansion instrument of Self-expanded stent, because the base end side opening is not at the cardinal extremity of utensil and at the base end side of front end side pipe, so also can carry out easily being replaced by other biological body organ expansion utensil when support is kept somewhere operation.And, owing to comparing with the external diameter than the maximum gauge part of the forward distolateral part of the above-mentioned cardinal extremity side pipe of above-mentioned body organ expansion instrument, the external diameter of cardinal extremity side pipe is little, so, even make the seal wire that extends to base end side under the state of the side of cardinal extremity side pipe owing to the base end side opening, the external diameter of cardinal extremity side pipe also can with than the external diameter of the maximum gauge part of the forward end example of cardinal extremity side pipe of body organ expansion instrument about equally, thereby can insert in the thin blood vessel.
The body organ expansion instrument of the present embodiment has front end side pipe 2, cardinal extremity side pipe 4, support and takes in cartridge 5, support 3 and traction element 6.
And, in the body organ expansion instrument 1 of the present embodiment, has intervalve 7, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 1 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of traction element 6 is taken in cartridge and is fixed with support in intervalve 7, and traction element 6 is to pass intervalve 7 and front end side pipe 2 and to the parts of cardinal extremity side pipe 4 interior extensions.Thus, draught line can not expose.
Such as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 5, support is taken in cartridge 5 and is the tubular body of specific length.There is opening front-end and back-end.Front opening has when keeping somewhere support 3 in endoceliac narrow the function as the discharge port of support 3.Support 3 is pushed out from this front opening, and the stress load is disengaged thus, returns to the front shape of compression thereby support 3 is expanded.
Support is taken in about the preferred 20mm～400mm of length of cartridge 5, more preferably 30mm～250mm.In addition, about the preferred 1.0～4.0mm of external diameter, more preferably 1.5～3.0mm.In addition, support is taken in about the preferred 1.0～2.5mm of internal diameter of cartridge 5.And the support that uses is in the present embodiment taken in and is taken in the position with the support of the front of cartridge 5 and be wide diameter portion 51, and with respect to this wide diameter portion 51, cardinal extremity is minor diameter part.Like this, about the preferred 1.0～4.0mm of the external diameter of wide diameter portion, more preferably select 1.5～3.0mm.In addition, about the preferred 1.0～4.0mm of the external diameter of minor diameter part, more preferably 1.2～2.8mm.And it also can be the whole parts of roughly the same external diameter that are that support is taken in cartridge.
Like this, such as Fig. 2, Fig. 3, Fig. 5 and shown in Figure 6, support is taken in cartridge 5 to have from the cardinal extremity slit 52 of distolateral extension forward.Being formed on jut on the outer surface of front end side pipe described later (in this embodiment, traction element connect tubular part 8) can move in this slit 52.And in the present embodiment, support is taken in cartridge 5 and can be moved to base end side, until the front end of this slit and tubular part 8 butts.Therefore, the length of slit 52 and take in the length of the equal in length the front end of cartridge 5 or slit 52 slightly longer with the cardinal extremity of the support 3 the cartridge 5 to support from the support of having taken in support 3.
Take in the formation material of using cartridge 5 about support, consider that support takes in the desired physical property of cartridge (flexibility, hardness, intensity, sliding, anti-entanglement, retractility) preferred example such as polyethylene, polypropylene, nylon, polyethylene terephthalate, fluorine-based polymer and the thermoplastic elastomer (TPE)s such as PTFE, ETFE.As thermoplastic elastomer (TPE), can be from nylon-type (for example, polyamide elastomer), carbamates (for example, polyurethane elastomer), suitably select in polyesters (for example, polyethylene terephthalate elastomer), the olefines (for example, polyethylene elastomer, polypropylene elastomer).
And, preferably take in the outer surface of cartridge 5 at support and implement to make it be the processing of lubricity.Such processing can list the method for hydrophilic polymeies such as applying or fix poly-(HEMA), Poly(Hydroxyethyl Methacrylate), hydroxypropyl cellulose, methyl vinyl ether copolymer-maleic anhydride, Polyethylene Glycol, polyacrylamide, polyvinyl pyrrolidone etc.In addition, for the sliding that makes support 3 is good, also above-mentioned substance can be applied or is fixed on support and take in the inner surface of using cartridge 5.
And, take in the leading section of cartridge 5 at support and to have taken in support 3.Support 3 is so-called Self-expanded stents.Specifically, support 3 forms general cylindrical shape, is compressed to central axis direction in the time of in inserting organism, and expands laterally when keeping somewhere in organism and revert to shape before the compression.And support remains on support with the state that is compressed into central axis direction and takes in in the cartridge 5.Therefore, support 3 is maintained at support with the recuperability pushing support by self with the state of the inner surface of cartridge 5 and takes in the usefulness cartridge.In addition, as described below, by the movement of bracket clamp bonding part 22 limit bracket 3 that are arranged on front end side pipe 2 to base end side.
Support 3 can be the support of any kind, so long as so-called Self-expanded stent as described above gets final product.For example, as support 3, can use and have Figure 23 the support of shape shown in (show expansion and return to the state of the shape before the compression).This routine support 3 has cylindric framework 3a, divides the opening 34 that (centering on) go out and the notch 35 that is marked off by framework 36a by the framework 36a, the 36b that consist of this cylindric framework 3a, and framework 3a has both ends 33a, 33b.
The formation material of support can use synthetic resin or metal.As synthetic resin, use the material with consistency and elasticity to a certain degree, preferred organism adaptability synthetic resin.Specifically polyolefin (for example, polyethylene, polypropylene), polyester (for example, polyethylene terephthalate), fluororesin (for example, PTEP, ETFE), or polylactic acid, polyglycolic acid or the polylactic acid of absorbing material and the copolymer of polyglycolic acid etc. in the organism.In addition, as metal, also preferably has an organism adaptive, such as rustless steel, tantalum, Nitinol etc.More preferably superelastic metal.Support 3 does not preferably have the rapid change point of physical property ground integrally formed on the whole.Support forms by following process: for example, preparation has the metal tube of the external diameter at position in the organism that is suitable for keeping somewhere, by machining (for example, mechanical type cutting, laser cutting), the side of removing partly metal tube such as chemical etching, thereby form a plurality of notch or a plurality of opening in the side.
Because this support 3 has notch 35 in the end of framework 3a, so the distortion of end 33a, the 33b of support 3 becomes easily, especially can realize the local deformation of end, thereby the response during to the blood vessel distortion of indwelling support is good.In addition, owing to the end of end 33 by a plurality of framework 36a forms, so be difficult to damage and have enough intensity.In addition, be formed with the opening 34 that is surrounded by framework 36a, 36b between both ends, this opening 34 is easily distortion by the distortion of framework 36a.Therefore, in the central also easily distortion of section's (central part of framework 3a) of support 3.And notch and opening are not limited to illustrated shape and number, can be 3～10 as notch, can be about 3～10 as opening.
The external diameter of framework 3a is 2.0～30mm, preferred 2.5～20mm; Internal diameter is 1.4～29mm, preferred 1.6～28mm; Length is 10～150mm, preferred 15～100mm.
Need to prove, the shape of support is not limited to shown in Figure 23, also can be for example to form trapezoidal notch at both ends, and form cellular a plurality of hexagonal apertures at central part; Also can form at both ends rectangular notch, form the opening of a plurality of rectangles (2 times of length with notch) etc. at central part.And the shape of support 3 is that diameter can dwindle when inserting, and diameter can enlarge (recovery) and gets final product when emitting in vivo, but is not limited to above-mentioned shape.Also can be for example helical form, cylindric, roller shape, special-shaped tubular, multistage coiled type, leaf-spring-like, cage shape or netted.
Can use superelastic alloy as the superelastic metal that forms support.Said superelastic alloy is commonly referred to as marmem herein, presents hyperelastic alloy at organism body temperature (about 37 ℃) at least.Particularly, the preferred Ti-Ni alloy of 49～53 atom %Ni, the Cu-Zn alloy of 38.5～41.5 % by weight Zn, Cu-Zn-X alloy (X=Be, Si, the Sn of 1～10 % by weight X of using, Al, Ga), the superelastic metal body of the Ni-Al alloy of 36～38 atom %Al etc.More preferably above-mentioned Ti-Ni alloy.In addition, by adopting the part of Ti-Ni alloy is replaced Ti-Ni-X alloy (X=Co, the Fe that forms with 0.01～10.0%X, Mn, Cr, V, Al, Nb, W, B etc.) or the Ti-Ni-X alloy (X=Cu that adopts the part with the Ti-Ni alloy to form with 0.01～30.0% atomic substitutions, Pb, Zr), moreover pass through to select cold working modulus and/or final heat treated condition, can suitably change mechanical property.In addition, by using above-mentioned Ti-Ni-X alloy and selecting cold working modulus and/or final heat treated condition, can suitably change mechanical property.
The buckling strength of employed superelastic alloy (yield stress during load) is 5～200kg/mm 2(22 ℃), more preferably 8～150kg/mm 2Recovery stress (yield stress during unloading) is 3～180kg/mm 2(22 ℃), more preferably 5～130kg/mm 2Even said super-elasticity refers to that under serviceability temperature distortion (crooked, stretch, compression) to the common zone of metal plastic deformation, does not need to heat the shape that just can roughly return to before compressing yet after distortion discharges herein.
In addition, the support that is used for organism expansion utensil of the present invention also can have: form general cylindrical shape, the reducible rack body of diameter; Tubular lid (not shown) with the side of closed supports main body.
Shown in Fig. 1～3, front end side pipe 2 is to have the body that penetrates into the guidewire lumen 21 of cardinal extremity from front end, and has the leading section that is formed by the front end component 25 that is fixed in front end, also has front opening 24.Need to prove, leading section also can be integrally formed with the front end side pipe.Then, front end side pipe 2 is fixed on the front end of the cardinal extremity side pipe on the cardinal extremity.And, have base end side opening 23 at the base end part (cardinal extremity among this embodiment) of front end side pipe 2.In addition, as shown in Figure 3, the base end part of front end side pipe 2 is crooked.And such as Fig. 3 and shown in Figure 7, base end side opening 23 is formed slopely obliquely to base end side.Thus, easily implement inducing of seal wire.
As shown in the figure, front end side pipe 2 is to have the body that extends through the guidewire lumen 21 of cardinal extremity from front end.As front end side pipe 2, its external diameter is 0.3～2.0mm, preferred 0.5～1.5mm; Its internal diameter is 0.2～1.5mm, preferred 0.3～1.2mm; Its length is 20～600mm, preferred 30～350mm.
And the front end that front end component 25 is taken in cartridge 5 than support is positioned at front, and as shown in Figure 3, is preferably formed as forward end and goes the diminishing shape that tapering is arranged of diameter.By forming in this wise, so that become easy to the insertion of narrow.In addition, preferred front end side pipe 2 have be arranged on support 3 front to stop support to take in the retainer that moves with cartridge forward end direction.In the present embodiment, the cardinal extremity of front end component 25 can be taken in the front end butt of using cartridge 5 with support, thereby as above-mentioned retainer performance function.
And the external diameter of the foremost section of front end component (leading section) 25 is preferably 0.5～1.8mm.In addition, the external diameter of the maximum diameter section of front end component (leading section) 25 is preferably 0.8～4.0mm.And the length of front tapered portion is preferably 2.0～20.0mm.
In addition, as shown in Figure 3, front end side pipe 2 has in the restriction body cavity indwelling support 3 to bracket clamp bonding part 22 that base end side moves.Fastening section 22 is preferably cyclic lug.And, take in the position becoming support than these 22 forward distolateral positions, bracket clamp bonding part.The external diameter of this fastening section 22 be can with the size of the cardinal extremity butt of compressed support 3.Like this, move to base end side even support is taken in cartridge 5, also can keep by fastening section 22 position of support 3, so support 3 finally is contained with cartridge 5 and discharges.
The external diameter of bracket clamp bonding part 22 is preferably 0.8～4.0mm.Need to prove, bracket clamp bonding part 22 is preferably cyclic lug as shown in the figure, but as long as movement that can limit bracket 3 and can being pushed out for example is arranged on to one or split the one or more projections on the front end side pipe 2.In addition, bracket clamp bonding part 22 also can form separately with the mode of x-ray imaging material with other parts.Thus, when x-ray imaging, can grasp exactly the position of support, dispose and become easier.As the x-ray imaging material, can example such as gold, platinum, platinumiridio, silver, rustless steel, platinum or their alloy etc.And protuberance is mounted by the following method, as: form tinsel and be wrapped in the outer surface of inner tube by the x-ray imaging material, perhaps form pipe by the x-ray imaging material, and rivet or weld.
Formation material as the front end side pipe, the material that preferably has hardness and flexibility is such as using the fluorine-based polymers such as the polyester such as the polyolefin such as polyethylene, polypropylene, polyamide, polyethylene terephthalate, ETFE, PEEK (polyether-ether-ketone), polyimides etc.Especially has thermoplastic resin in the preferred above-mentioned resin.Need to prove, on the outer surface that the front end side pipe exposes, also can apply and have the particularly resin of antithrombotic of organism adaptability.As the antithrombotic material, for example can preferably use poly hydroxy ethyl acrylate, hydroxyethyl methylacrylate and cinnamic copolymer (for example, HEMA-St-HEMA block copolymer) etc.
In addition, using and managing different parts when consisting of leading section, as leading section (front end component) 25, the preferred material with flexibility that uses.For example, (for example can use olefin type elastomer, polyethylene elastomer, polypropylene elastomer), the rubber-like of natural rubbers such as synthetic rubber, latex rubber such as synthetic resin elastomer of polyamide elastomer, phenylethylene elastomer (for example, styrene-butadiene-styrene, styrene-isoprene-styrene copolymer-, styrene-ethylene butylene-styrene copolymer), polyurethane, carbamates elastomer, fluorine type resin elastomer etc., urethane rubber, silicone rubber, butadiene rubber etc.
Such as Fig. 2, Fig. 4 and shown in Figure 7, cardinal extremity side pipe 4 is to penetrate into the body of cardinal extremity from front end, and has the sleeve pipe (hub) 12 that is fixed in cardinal extremity.The leading section of cardinal extremity side pipe 4 engages with the base end part of front end side pipe 2.Cardinal extremity side pipe 4 has can intert the traction of traction element 6 with chamber 41 in inside.
As cardinal extremity side pipe 4, its length is 300mm～1500mm, preferred 1000～1300mm; Its external diameter is 0.5～1.5mm, preferred 0.6～1.3mm; Its internal diameter is 0.3～1.4mm, preferred 0.5～1.2mm.
In addition, the external diameter of preferred cardinal extremity side pipe is than the little 0.1～2.5mm of external diameter of following intervalve, more preferably little 0.3～1.5mm.
Compare with the cardinal extremity side pipe 4 forward distolateral maximum diameter external diameters partly than body organ expansion instrument 1, the external diameter of cardinal extremity side pipe is little.Specifically, in the present embodiment, the external diameter of the fixed position of front end side pipe 2 and cardinal extremity side pipe 4 becomes maximum outside diameter, and the external diameter of comparing cardinal extremity side pipe 4 with this external diameter is little.Particularly, the external diameter of preferred cardinal extremity side pipe is taken in the external diameter of cartridge 5 also little than support.And in the present embodiment, such as Fig. 2, Fig. 3 and shown in Figure 7, the leading section of cardinal extremity side pipe 4 is fixed on the base end part of front end side pipe 2, and so that the central shaft of cardinal extremity side pipe 4 from the central shaft of front pipe 2 to the direction skew of leaving base end side opening 23.Thus, the seal wire that extends from cardinal extremity opening 23 is extended along the outer surface of the cardinal extremity side pipe 4 of the extension that becomes base end side opening 23, thereby can reduce to comprise the external diameter of base end side of the body organ expansion instrument 1 of seal wire, and can make the operability of the seal wire in the employed guiding catheter in use good, and can use the little guiding catheter of diameter.
The offset distance of the central shaft of the central shaft of cardinal extremity side pipe 4 and front end example pipe 2 is preferably 0.1～2.0mm, more preferably 0.5～1.5mm.
Formation material as the cardinal extremity side pipe, the material that preferably has hardness and flexibility is such as using the fluorine-based polymers such as the polyolefin such as polyethylene, polypropylene, nylon, polyethylene terephthalate, ETFE, PEEK (polyether-ether-ketone), polyimides etc.Need to prove also can have the resin that the organism adaptability particularly has antithrombotic in the outer surface coating of cardinal extremity side pipe.As the antithrombotic material, for example can use poly hydroxy ethyl acrylate, hydroxyethyl methylacrylate and cinnamic copolymer (for example, HEMA-St-HEMA block copolymer) etc.In addition, as the formation material of cardinal extremity side pipe, preferably use the higher material of rigidity.Such as using the metals such as Ni-Ti, copper, rustless steel, aluminum; Can also use the higher resin of rigidity, such as using polyimides, vinyl chloride, Merlon etc.
And, in the body organ expansion instrument 1 of the present embodiment, has intervalve 7, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and the base end part of this intervalve 7 is fixed in the base end part of front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 1 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of traction element 6 is taken in cartridge and is fixed with support in intervalve 7, traction element 6 connects between intervalve 7 and the front end side pipe 2, and to the 4 interior extensions of cardinal extremity side pipe.
The base end part of front end side pipe 2 is in intervalve 7 interior extensions, and base end part exposes from the cardinal extremity of intervalve.In addition, the leading section of cardinal extremity side pipe 4 enters in the base end part of intervalve 7.Like this, front end side pipe 2, cardinal extremity side pipe 4 and intervalve 7 are fixed respectively at the base end part of intervalve 7 liquid-tightly.In addition, the chamber 41 of cardinal extremity side pipe 4 and 7 interior connections of intervalve.In addition, as shown in Figures 2 and 3, the leading section diameter of intervalve 7 diminishes or is crooked.The front end of preferred intervalve 7 not limit bracket is taken in the contacting with the outer surface that support is taken in cartridge 5 movably of cartridge 5 liquid-tightly, also can not contact.
Formation material as intervalve, be preferably the material with hardness and flexibility, such as using the fluorine-based polymers such as the polyolefin such as polyethylene, polypropylene, nylon, polyethylene terephthalate, ETFE, PEEK (polyether-ether-ketone), polyimides etc.Especially has thermoplastic resin in the preferred above-mentioned resin.Need to prove also can have the resin that the organism adaptability particularly has antithrombotic in the outer surface coating of intervalve.As the antithrombotic material, for example can use poly hydroxy ethyl acrylate, hydroxyethyl methylacrylate and cinnamic copolymer (for example, HEMA-St-HEMA block copolymer) etc.
And, body organ expansion instrument 1 has traction element 6, one end of this traction element 6 is fixed on support and takes in on the cartridge 5 and in the 4 interior extensions of cardinal extremity side pipe, by the base end side traction to the cardinal extremity side pipe support is taken in cartridge 5 and is moved to base end side.
In the organism of the present embodiment expansion utensil 1, traction element 6 is made of draught line.In addition, such as Fig. 1, Fig. 2 and shown in Figure 4, traction element 6 connects cardinal extremity side pipes 4 and extends from the cardinal extremity of cardinal extremity side pipe.
As the constituent material of draught line, the wire rod that can use wire rod or be twisted with many wire rods.In addition, the wire diameter of draught line is not particularly limited, usually about preferred 0.01～0.55mm, more preferably about 0.1～0.3mm.
In addition, formation material as traction element 6, can enumerate stainless steel wire (preferred spring high-tension rustless steel), piano wire (preferably having implemented the piano wire of nickel plating or chromium plating), the superelastic alloy line, the wire rod that is formed by various metals such as Ni-Ti alloy, Cu-Zu alloy, Ni-Al alloy, tungsten, tungsten alloy, titanium, titanium alloy, cobalt alloy, tantalums, the higher macromolecular materials of rigidity such as polyamide, polyimides, ultra-high molecular weight polyethylene, polypropylene, fluorine-type resin, the perhaps appropriate combination of these materials.
In addition, can also cover the low frictional properties resin that increases sliding in the side of traction element.As the low frictional properties resin, can enumerate fluorine-type resin, nylon 66, polyether-ether-ketone, high density polyethylene (HDPE) etc.Wherein, preferred fluorine-type resin.As fluorine-type resin, such as enumerating politef, Kynoar, ETFE, perfluoroalkoxy resin etc.In addition, also can apply with silicone or various hydrophilic resin.
And the operation of being fixed in the base end part of traction element 6 forms the base end part that surrounds traction element 6 and the bellying that is formed on the cardinal extremity of traction element 6 with parts 53.And in the present embodiment, operation has the enterable through holes 54 such as finger with parts 53.
In addition, in the body organ expansion instrument 1 of the present embodiment, be provided with on the base end side outer surface of front end side pipe 2 and can take at support the jut (in the present embodiment, being to be used for the tubular part that tinsel connects) 8 of the slit 52 interior movements of using cartridge 5.The front end of jut 8 is positioned at the base end part of slit 52, and limit bracket is taken in the rotation of cartridge 5 with respect to central shaft when operation body organ expansion instrument 1.In addition, because slit 52 extends to front as described above, thus can limit bracket not take in the movement of cartridge 5 to base end side, but can take in cartridge 5 to the base end side traveling priority by guide support.This jut (in the present embodiment, the tubular part that connects for being used for tinsel) 8 is fixed in the outer surface of front end side pipe 2, but also can be fixed on the inner surface of intervalve 7, but also can be arranged to extend to the back-end from the front end of cardinal extremity side pipe.The body organ expansion instrument 1 of the present embodiment has limit bracket and takes in the displacement restriction section of cartridge to the displacement of base end side.Concrete is, by being taken in cartridge 5, moves to base end side on support, the front end butt of jut (in the present embodiment, be being used for the tubular part that tinsel connects) 8 and slit 52 is taken in cartridge 5 continuation with limit bracket and to be moved to base end side.
In addition, in the body organ expansion instrument 1 of the present embodiment, have the traction element position and keep using parts, this traction element position keeps being positioned at the outer surface side of front end side pipe 2 and having with parts can be for the path of traction element 6 perforations.Particularly, in the present embodiment, be provided with the cartridge 8 that the function of parts and above-mentioned jut is used in this traction element position maintenance of performance.By being set, such traction element position keeps to make traction element 6 carry out good traction with parts 8.And preferred traction element position keeps being positioned at traction element 6 with parts 8 and takes on the base end side extended line of the fixed part 6d that uses cartridge 5 with support.And, keep using parts as the traction element position, can for the path of traction element 6 perforations, can be endless member or the endless member with otch, channel form parts etc. as long as have.State in the use in the situation of endless member, preferably arrange a plurality of.
As cartridge 8, use the body that has the inner chamber larger than the external diameter of traction element in inside.As cartridge 8, its length is 10mm～180mm, is preferably 15～120mm; Its external diameter is 0.15～0.8mm, is preferably 0.2～0.5mm; Its internal diameter is preferably about the large 0.05～0.2mm of external diameter than traction element.
And preferably this traction element position keeps also being fixed on the outer surface of front end side pipe 2 with parts, but also can be fixed on the inner surface of intervalve 7, but also can be arranged to the forward distolateral extension of front end from the cardinal extremity side pipe.And, can also keep covering with the inner surface of parts in the traction element position low frictional properties resin of above-mentioned increase sliding.
And such as Fig. 1, Fig. 2 and shown in Figure 4, the base end part of cardinal extremity side pipe 4 is fixed with sleeve pipe 12.Such as Fig. 2 and shown in Figure 4, sleeve pipe 12 has casing main body 42, is accommodated in the casing main body 42 and so that the valve body 43 of the liquid-tight property of the mode that traction element 6 can slide maintenance traction element 6.In addition, sleeve pipe 12 have near the central authorities of casing main body 42 to the side ports 45 of oblique rear branch.And sleeve pipe 12 has the inner tube locking mechanism of the movement of restriction traction element 6.In the present embodiment, locking mechanism is made of functional unit 44 and the casing main body 42 of valve body 43, compression valve body 43, and this valve body 43 is by the base end part of compression with liquid-tight state clamping traction element 6.By this locking mechanism is set, can prevent being pulled because of carelessness of traction element 6.Valve body 43 is arranged at valve body and takes in in the recess, and this valve body is taken in the base end part that is arranged on casing main body 42 with recess, is formed with traction element in the inside of valve body 43 and inserts general path.In addition, valve body 43 is not having under the compressed state also and can keeping liquid-tight state with between itself and the traction element, in case the outflow of Hemostatic Oral Liquid.The interior shape of the valve body 43 in the present embodiment (in other words, inner tube is inserted general passage shape) is made in the axial direction two roughly shapes of spherical part superposition, and the diameter of two ends and central part is little.
Functional unit 44 has the 44b of the section that screws that forms and can screw with the 42a of the section that screws of the back end outer surface that is formed on casing main body 42 with surrounding this valve body pushing 44a of section at the valve body pushing 44a of section of the side-prominent tubular of central part forward end.In addition, be formed with traction element in the inside of the valve body pushing 44a of section and insert general path.In addition, as shown in Figure 4, the front of the valve body pushing 44a of section partly enters valve body and takes in in the recess, and can move compression valve body 43 by the operating body forward end.
In the locking mechanism of the present embodiment, if the mode that functional unit 44 rotations are moved with the front to sleeve pipe 12 screws, then the rear end of the front end of the 44a of valve body pushing section pushing valve body 43 screws togather if further make functional unit 44 rotations, and then valve body 43 is compressed in the axial direction.And, valve body 43 along with the compression carrying out, by with traction element 6 securely close contact control fixed traction parts 6.And, carry out the releasing of locking mechanism by rotary manipulation contrary to the above.
Need to prove although preferably have locking mechanism as described above, also can not have the such locking mechanism of sleeve pipe 12a shown in Figure 8.In this sleeve pipe 12a, in casing main body 42a, take in and make traction element 6 at the liquid-tight seal member 43a that slides in state moving.Seal member 43a can not move.
Constituent material as casing main body 42,42a and functional unit 44 can use hard or semi-rigid material.As hard or semi-rigid material, can use the metal of the synthetic resin, rustless steel, aluminum or aluminum alloy etc. of Merlon, polyolefin (polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer), styrene resin [such as styrene, MS resin (methacrylic resin-styrol copolymer), MBS resin (methacrylic resin-butylene-styrene copolymer)], polyester etc.
In addition, the constituent material as valve body 43 and seal member 43a can use elastomeric material.As elastomeric material, can use synthetic resin elastomer such as rubber-like, olefin type elastomer (for example polyethylene elastomer, polypropylene elastomer), polyamide elastomer, phenylethylene elastomer (for example, styrene-butadiene-styrene, styrene-isoprene-styrene copolymer-, styrene-ethylene butylene-styrene copolymer), polyurethane, carbamates elastomer, fluorine type resin elastomer of natural rubbers such as the synthetic rubber such as urethane rubber, silicone rubber, butadiene rubber, latex rubber etc. etc.
Below, the using method of body organ expansion instrument 1 of the present invention is described with reference to the accompanying drawings.
At first, in the peristome 24 of the front end component of body organ expansion instrument illustrated in figures 1 and 2, be inserted in the end of in most cases having kept somewhere seal wire in vivo, and seal wire (not shown) is passed from base end side opening 23.Then, be inserted in the guiding catheter (not shown) that inserts in vivo, and advance body organ expansion instrument 1 along seal wire, so that support is taken in and taken in the position with the support of cartridge 5 and be positioned at narrow as target.
Then, the functional unit 44 of the sleeve pipe 12 of operation cardinal extremity side pipe 4, to remove the stationary state of traction element 6, then the functional unit 53 with traction element 6 draws to proximal direction.Thus, support is taken in cartridge 5 and is moved to axial base end side.At this moment, because the rear end face of support 3 is connected on the front end face of bracket clamp bonding part 22 of front end side pipe 2 by fastening, so along with support is taken in movement with cartridge 5, the front opening that support 3 is taken in cartridge 5 from support is released.Because this is emitted, as shown in Figure 9, support 3 self expandables are also expanded narrow, and be retained in the narrow.
The following describes the body organ expansion instrument 10 of other embodiment of the present invention.
The difference of the body organ expansion instrument 10 of the present embodiment and the body organ expansion instrument 1 of above-described embodiment is, do not have the intervalve aspect different with the mode of front end side pipe, other aspects are identical with above-mentioned body organ expansion instrument 1, and parts same as described above have marked identical symbol.
The body organ expansion instrument 10 of the present embodiment has front end side pipe 2a, cardinal extremity side pipe 4, support and takes in cartridge 5a, support 3 and traction element 6.
Such as Figure 10 and shown in Figure 11, whole support is taken in the cartridge that roughly uses equal outer diameter with cartridge 5a.In addition, on taking in cartridge 5a, support also slit shown in Figure 16 59 can be set.As shown in figure 16, the jut 29 that is formed at the outer surface of front end side pipe can move in this slit 59.And in the present embodiment, support is taken in cartridge 5a and can be moved to base end side, until the front end of this slit 59 and jut 29 butts.Therefore, slit 59 with take in from the support of storage support 3 that to take in equal in length or the slit 59 of front end of usefulness cartridge 5a to support with the cardinal extremity of the support 3 the cartridge 5 slightly longer.
Take in formation material with cartridge 5a as support, use with above-mentioned support and take in the identical material of usefulness cartridge 5.The outer surface enforcement of preferably taking in cartridge 5a at support in addition, makes it be the processing of lubricity.As such processing as mentioned above.And, have good sliding in order to make support 3, also above-mentioned material can be applied or is fixed on support and take in the inner surface of using cartridge 5a.
And, take in the leading section of cartridge 5a at support and to have taken in support 3.Identical in support 3 and above-described embodiment.
Such as Figure 10, shown in Figure 11, front end side pipe 2a has the body that penetrates into the guidewire lumen 21 of cardinal extremity from front end, and has the leading section that is formed by the front end component 25 that is fixed in front end, also has front opening 24.Need to prove, leading section also can be integrally formed with the front end side pipe.And front end side pipe 2a is fixed in the front end of the cardinal extremity side pipe on the cardinal extremity.In addition, guidewire lumen 21 is crooked at base end part, and has base end side opening 23 at the base end part (being cardinal extremity in the present embodiment) of front end side pipe 2.And as shown in figure 11, base end side opening 23 is formed slopely obliquely to base end side.Thus, inducing of seal wire become easy.
As front end side pipe 2a, its external diameter is 0.5～3.0mm, preferred 1.0～2.5mm; Its internal diameter is 0.2～1.5mm, preferred 0.3～1.2mm; Its length is 20～600mm, preferred 30～350mm.
In addition, as shown in figure 11, front end side pipe 2a has support configuration minor diameter part 26 at leading section.And, be construed as limiting indwelling support 3 in the body cavity to bracket clamp bonding part that base end side moves by the configuration of this support with the cardinal extremity 26a of minor diameter part 26.Support configuration with the external diameter of the cardinal extremity 26a of minor diameter part 26 be can with compress after the size of cardinal extremity butt of support 3.And, even taking in cartridge 5a, moves to base end side on support, also owing to keeping the position of support 3 by cardinal extremity 26a, so finally being taken in cartridge 5a by support, support 3 discharges.
And, in the body organ expansion instrument 10 of the present embodiment, to compare with the cardinal extremity side pipe 4 forward distolateral maximum diameter external diameters partly than body organ expansion instrument 10, the external diameter of cardinal extremity side pipe is little.Specifically, the external diameter that support is taken in cartridge 5a is maximum outside diameter, and the external diameter of cardinal extremity side pipe 4 is less than this external diameter.And in the present embodiment, such as Figure 10, shown in Figure 11, the leading section of cardinal extremity side pipe 4 is fixed on the base end part of front end side pipe 2a, and so that the central shaft of cardinal extremity side pipe 4 from the central shaft of front pipe 2a to the direction skew of leaving base end side opening 23.
And front end side pipe 2a has from traction element 6 and support and takes in extending and for the traction element path 27 of traction element perforation to base end side near the fixed part 6d of cartridge 5a.Need to prove, in the present embodiment, traction element forms by the outer surface that is arranged at front end side pipe 2a and at axially extended recess with path 27.And traction element also can be the chamber of extending in the heavy wall of front end side pipe 2a with path.
And, in the body organ expansion instrument 10 of the present embodiment, also be to the proximal direction traction support to be taken in cartridge 5a by the functional unit 53 with traction element 6 to move to axial base end side.At this moment, the rear end face of support 3 abuts to the cardinal extremity face of minor diameter part of front end side pipe 2a and fastening, so along with support is taken in movement with cartridge 5a, support 3 is taken in the front opening of cartridge 5a from support emits.Because this emits, as shown in figure 12, support 3 self expandables and with the narrow expansion, and be retained in the narrow.
And in above-mentioned all embodiment, traction element also can arrange a plurality of, specifically arranges more than two or two.
The body organ expansion instrument 20 of embodiment shown in Figure 13～15 has two traction elements.
Figure 13 is that the amplification outside drawing is omitted in the part of the body organ expansion instrument of other embodiment of the present invention.
Figure 14 is the amplification view along the C-C line of Figure 13.Figure 15 is the amplification view along the D-D line of Figure 13.
The difference of the body organ expansion instrument 20 of the present embodiment and the body organ expansion instrument 1 of above-described embodiment just is provided with two traction elements and consequent different.Other aspects are identical with above-mentioned body organ expansion instrument 1, and parts same as described above have marked identical label.Need to prove, two traction elements also can be set in the above-mentioned body organ expansion instrument 10.
Such as Figure 13 and shown in Figure 14, the support in the body organ expansion instrument 20 of the present embodiment is taken in cartridge 5 and is extended to front from cardinal extremity, and has two slit 52a, 52b that are arranged on relative position.And, correspondingly, be provided with two root tubular part 8a, the 8b that is configured in relative position at front end side pipe 2.
And, taking in the base end part of using cartridge 5 at support, two traction element 6a, 6b are fixed on relative position.And to shown in Figure 15, traction element 6a connects tubular part 8a and in the 4 interior extensions of cardinal extremity side pipe, is fixed on the functional unit 53 at base end part such as Figure 13.Similarly, traction element 6b connects tubular part 8b and in the 4 interior extensions of cardinal extremity side pipe, is fixed on the operating portion 53 at base end part.
In addition, the leading section of body organ expansion instrument also can have Figure 17 and structure shown in Figure 180.Figure 17 is the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.Figure 18 is the amplification view of the leading section of body organ expansion instrument shown in Figure 17.
The basic structure of this body organ expansion instrument 30 is identical with above-mentioned body organ expansion instrument 1.The difference of this body organ expansion instrument 30 and above-mentioned body organ expansion instrument 1 is, in body organ expansion instrument 1, support is taken in the inner slide of cartridge 5 at intervalve 7, and in this body organ expansion instrument 30, support is taken in cartridge 5b and is slided in the outside of intervalve 7a.In addition, support is taken in cartridge 5b has identical external diameter in whole length, and intervalve 7a also has identical external diameter on whole length.And the external diameter of intervalve 7a is taken in the internal diameter of cartridge 5b smaller than support.Therefore, in the body organ expansion instrument 30 of the present embodiment, it is diameter the best part in this system that support is taken in cartridge 5b.
And as mentioned above, the leading section of intervalve 7a enters support and takes in the cardinal extremity of cartridge 5b inner.In addition, as shown in figure 18, draught line 6 is fixed on support from the fixing point 6d of the part of support close to quite and takes in inboard with cartridge 5 from being arranged at.And, be fixed with the base end part of front end side pipe 2 and the leading section of cardinal extremity side pipe 4 at the base end part of intervalve 7a.
Identical with body organ expansion instrument 1, intervalve 7a is connected with support with cartridge 5b and does not connect also and can relatively move, so by guiding draught line 6 support being taken in cartridge 5b moves to base end side, but because support 3 by 22 fastenings of fastening section, is discharged and self expandable so support 3 is taken in cartridge 5b by support.By making in such a way, even form all tubings by flexible material, also because draught line is arranged in pipe, so thereby in the blood vessel of bending etc., also can not bend safely expandable stent.
In addition, the leading section of body organ expansion instrument also can be that Figure 19 is to structure shown in Figure 22.The basic structure of this body organ expansion instrument 40 is identical with above-mentioned body organ expansion instrument 1.Figure 19 is the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.Figure 20 is the cutaway view along the E-E line of Figure 19.Figure 21 is the amplification view along the F-F line of Figure 19.Figure 22 is the amplification view along the G-G line of Figure 19.
The difference of this body organ expansion instrument 40 and above-mentioned body organ expansion instrument 1 is, in body organ expansion instrument 1, support is taken in the inner slide of cartridge 5 at intervalve 7, and in this body organ expansion instrument 40, support is taken in cartridge 5b and is slided in the outside of intervalve 47.In addition, support is taken in cartridge 5b has identical external diameter in total length, intervalve 47 except base end part with on whole length, also have identical external diameter.And the external diameter of intervalve 47 is taken in the internal diameter of cartridge 5b smaller than support.Therefore, in the body organ expansion instrument 40 of the present embodiment, it is diameter the best part in this system that support is taken in cartridge 5b.
And as mentioned above, the leading section of intervalve 47 enters support and takes in the cardinal extremity of cartridge 5b inner.In addition, such as Figure 19 and shown in Figure 20, have a plurality of (being specially 2) draught line 6a, 6b in the body organ expansion instrument 40, draught line 6a, 6b are fixed on the inboard that support is taken in usefulness cartridge 5b from being arranged on quite approaching fixing point 69a, the 69b partly of support.In addition, draught line 6a, 6b and this fixing point 69a, 69b are configured in about the central shaft of body organ expansion instrument 40 symmetrical position roughly.
In addition, as shown in figure 21, intervalve 47 has on the relative position of being formed on and to be used for taking in draught line and at axially extended bellying 47a, 47b.In the part except this bellying 47a, 47b part, intervalve 47 is near front end side pipe 2.By using such structure, can limit the movement of draught line on the outer surface of front end side pipe 2, thereby can carry out better the traction of line.
And, such as Figure 20 and shown in Figure 22, intervalve 47 is in the base end side reduced, be formed on the relative position be used for taking in draught line and at axially extended bellying 47a, 47b very near draught line 6a, 6b, and in the part except bellying 47a, 48b part, intervalve 47 contacts with front end side pipe 2.And as shown in figure 20, the base end part that the diameter of intervalve 47a is little enters in the front end of connection tube 48 and is fixed.In addition, the base end part at connection tube 48 is fixed with the base end part of front end side pipe 2 and the leading section of cardinal extremity side pipe 4.
With body organ expansion instrument 1 in the same manner, intervalve 47 is connected with support with cartridge 5b and is not connected also and can relatively move, so support is taken in cartridge 5b is moved to base end side by guiding draught line 6a, 6b, but because support 3 fastenings in fastening section 22, are discharged and self expandable so support 3 is taken in cartridge 5b by support.By making in such a way, even form all tubings by flexible material, also because draught line is arranged in pipe, thus also can be crooked in the blood vessel of bending etc., thus expandable stent safely.
And, in body organ expansion instrument of the present invention, the front pipe has the support-moving that is arranged at than the forward distolateral position of the front end of above-mentioned support and suppresses to use protuberance, if becoming forward end, the front of this support-moving restraining outburst section goes to the diminishing tapering of diameter, then can be in limit bracket forward end side shifting, make the leading section of utensil be easy to be inserted into the target site of organism organ.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument comprises the traction element position and keeps using parts, this traction element position keeps being positioned at parts the outer surface of front end side pipe, and have the path that connects for traction element, then traction element can draw well.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument has the jut of the outer surface that is positioned at the front end side pipe, and support is taken in cartridge to have from cardinal extremity forward distolateral extension and the slit that can move for jut, and then support is taken in cartridge and can be moved to base end side well.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument has the displacement restriction section that limit bracket is taken in the distance that moves to base end side with cartridge, can prevent that then support from taking in the excessive movement with cartridge.
Embodiment
Made the body organ expansion instrument of the mode of Fig. 1～shown in Figure 7.Need to prove, the body organ expansion instrument of this embodiment is the so-called quick-replaceable type utensil that uses 0.035 inch seal wire to make as prerequisite.The front end side pipe uses the polyether-ether-ketone pipe of external diameter 1.23mm, internal diameter 0.95mm.The bracket clamp bonding part is fixed by the outer surface that the ring with stainless steel is entrenched in the front end side pipe.Front end component uses the parts of the polyester elastomer system that forms by injection moulding.As support, use the parts that are cut into from the NiTi pipe.And, take in as support and to use cartridge, use the external diameter of support incorporating section to be 1.8mm as 2.06mm, internal diameter, the external diameter of minor diameter part is that 1.60mm, internal diameter are the polyimide tube of 1.36mm.As intervalve, use external diameter to be 2.06mm, the internal diameter polyimide tube as 1.80mm.As the cardinal extremity side pipe, use external diameter to be 1.16mm, the internal diameter polyether-ether-ketone pipe as 0.85mm.As traction element, use that the leading section external diameter is following as 0.3mm (length 15cm), the external diameter of base end side is the solid wire of the stainless steel of 0.52mm.
And the body organ expansion instrument of the present embodiment is to use conductor from the opposite near the simulated blood vessel of iliac artery and make the support expansion, thereby support can not had fully the indwelling of position movement ground.
Use embodiment shown in the drawings that the body organ expansion instrument of other embodiment of the present invention is described.
Figure 24 is that front view is omitted in the part of the body organ expansion instrument of embodiments of the invention.Figure 25 is near the amplification outside drawing the leading section of body organ expansion instrument shown in Figure 24.Figure 26 is near the amplification view the leading section of body organ expansion instrument shown in Figure 24.Figure 27 is near the amplification outside drawing the operating portion of body organ expansion instrument shown in Figure 24.Figure 28 is the amplification view along the H-H line of Figure 25.Figure 29 is the amplification view along the I-I line of Figure 25.
The employed support of the body organ expansion instrument of the present embodiment is taken in the outside drawing of an example of cartridge identical with content shown in Figure 5, so with reference to Fig. 5.
Body organ expansion instrument 50 of the present invention comprises: the front end side pipe 2 with guidewire lumen 21; Leading section is fixed in the cardinal extremity side pipe 4 on the base end part of front end side pipe 2; But the support that the front of encirclement front end side pipe 2 and the proximal direction of forward end side pipe 2 slide is taken in cartridge 5; Being accommodated in support takes in the support 3 in the cartridge 5; One end is fixed on support and takes in on the cartridge 5 and in the 4 interior extensions of cardinal extremity side pipe, and makes support take in the traction element 6 that moves to base end side with cartridge 5 by the base end side traction to the cardinal extremity side pipe.
And front end side pipe 2 comprises: at the base end side opening 23 of base end side opening to be communicated with guidewire lumen 21 of front end side pipe 2; Be positioned at front end side pipe 2 front and be incorporated in support and take in the cardinal extremity butt of the support 3 of cartridge 5 with limit bracket 3 to bracket clamp bonding part 22 that base end side moves.Support 3 forms general cylindrical shape, and is accommodated in the state that is compressed to central axis direction and takes in in the cartridge 5, and expands laterally when keeping somewhere in organism and return to shape before the compression.
And, having operating portion 9 at the base end part of cardinal extremity side pipe 4, this operating portion 9 possesses coiling draught line 6 so that support is taken in the draught line winding mechanism that moves to base end side with cartridge 5.
Therefore, in the body organ expansion instrument that uses self expandable type support, the base end side opening is not the cardinal extremity of utensil, but is positioned at the base end side of front end side pipe, so when carrying out support indwelling operation, be easy to be replaced by other biological body organ expansion utensil.And, by draught line is drawn to base end side, can emit support, thus carry out support emit operation the time, the position of support is mobile hardly.
As operating portion 9, preferably has operating portion shell 91 (91a, 91b), the draught line winding mechanism has operation rotating roller 61, and this rotating roller 61 has the part of exposing from operating portion shell 91, and by making rotating roller 61 rotations draught line 6 is wound to base end side.Can make thus operating portion self compactness, and can under the state of controlling the operating portion shell, make the operation of exposing be rotated operation with rotating roller, so can carry out reliably the operation that support is emitted from body organ expansion instrument by enough handss.
In addition, as body organ expansion instrument 50, preferably with than the cardinal extremity side pipe 4 forward distolateral maximum gauge external diameters partly from body organ expansion instrument 50 compare, the external diameter of cardinal extremity side pipe 4 is little.Thus, even make the seal wire that extends to base end side from the base end side opening under the state of the side extension of cardinal extremity side pipe, also can equate with the external diameter than the forward distolateral maximum gauge part of the cardinal extremity side pipe of body organ expansion instrument, thereby can be inserted into thin blood vessel.
The body organ expansion instrument of the present embodiment has front end side pipe 2, cardinal extremity side pipe 4, support and takes in cartridge 5, support 3, draught line 6 and operating portion 9 with mechanism of coiling draught line 6.
And, in the organism expansion utensil 50 of the present embodiment, has intervalve 7, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 50 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of draught line 6 is taken in cartridge and is fixed with support in intervalve 7, and draught line 6 is to pass between intervalve 7 and the front end side pipe 2 and to the parts of cardinal extremity side pipe 4 interior extensions.Thus, draught line can not expose.
Support is taken in cartridge 5 with illustrated identical in the body organ expansion instrument 1 of above-described embodiment.In addition, as support 3, no matter be which type of support, so long as so-called self expandable type support as described above gets final product.For example, as support 3, can use illustrated support in the body organ expansion instrument 1 of above-described embodiment.Such as Figure 25～shown in Figure 29, front end side pipe 2 is to have the body that penetrates into the guidewire lumen 21 of cardinal extremity from front end, and has the leading section that is formed by the front end component 25 that is fixed in front end, also has front opening 24.Need to prove, front end side pipe illustrated in the body organ expansion instrument 1 of front end side pipe 2 and above-described embodiment is identical.In addition, illustrated front end component is identical in the body organ expansion instrument 1 of front end component 25 and above-described embodiment.And as shown in figure 26, front end side pipe 2 has in the restriction body cavity indwelling support 3 to bracket clamp bonding part 22 that base end side moves.Fastening section illustrated in the body organ expansion instrument 1 of fastening section 22 and above-described embodiment is identical.
Such as Figure 24～shown in Figure 29, cardinal extremity side pipe 4 is to penetrate into the body of cardinal extremity from front end, and has the sleeve pipe 42 that is fixed in cardinal extremity.The leading section of cardinal extremity side pipe 4 engages with the base end part of front end side pipe 2.Cardinal extremity side pipe 4 has can intert the draught line of draught line 6 with chamber 41 in inside.Cardinal extremity side pipe illustrated in the body organ expansion instrument 1 of cardinal extremity side pipe 4 and above-described embodiment is identical.In the body organ expansion instrument 50 of the present embodiment, the external diameter of cardinal extremity side pipe is identical with the body organ expansion instrument of above-described embodiment 1, partly compare with the cardinal extremity side pipe 4 forward distolateral maximum gauges than body organ expansion instrument 50, the external diameter of cardinal extremity side pipe is little.Concrete is, in the present embodiment, the external diameter of the fixed position between front end side pipe 2 and the cardinal extremity side pipe 4 becomes maximum outside diameter, and the external diameter of cardinal extremity side pipe 4 is less than this external diameter.
And, in the body organ expansion instrument 50 of the present embodiment, has in the same manner intervalve 7 with the body organ expansion instrument 1 of above-described embodiment, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 50 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of draught line 6 is taken in cartridge and is fixed with support in intervalve 7, draught line 6 connects between intervalve 7 and the front end side pipe 2, and to the 4 interior extensions of cardinal extremity side pipe.
The base end part of front end side pipe 2 is in intervalve 7 interior extensions, and base end part exposes from the cardinal extremity of intervalve.In addition, the leading section of cardinal extremity side pipe 4 enters in the base end part of intervalve 7.Like this, front end side pipe 2, cardinal extremity side pipe 4 and intervalve 7 are fixed respectively at the base end part of intervalve 7 liquid-tightly.In addition, the chamber 41 of cardinal extremity side pipe 4 and 7 interior connections of intervalve.In addition, such as Figure 25 and shown in Figure 26, the leading section diameter of intervalve 7 diminishes or is crooked.The front end of preferred intervalve 7 not limit bracket is taken in the contacting with the outer surface that support is taken in cartridge 5 movably of cartridge 5 liquid-tightly, also can not contact.Intervalve illustrated in the body organ expansion instrument 1 of intervalve 7 and above-described embodiment is identical.
And, body organ expansion instrument 50 has draught line 6, one end of this draught line 6 is fixed on support and takes in on the cartridge 5 and in the 4 interior extensions of cardinal extremity side pipe, draws this draught line 6 by the base end side to the cardinal extremity side pipe and support is taken in cartridge 5 move to base end side.
In the body organ expansion instrument 50 of the present embodiment, traction element 6 is made of draught line.In addition, such as Figure 24, Figure 25 and shown in Figure 27, draught line 6 connects cardinal extremity side pipes 4 and extends from the cardinal extremity of cardinal extremity side pipe.Illustrated identical in the body organ expansion instrument 1 of draught line 6 and above-described embodiment.
In addition, in the body organ expansion instrument 50 of the present embodiment, be provided with and take in jut (tubular part) 8 with the slit 52 interior movements of cartridge 5 at support at the base end side outer surface of front end side pipe 2.Jut (tubular part) 8 is identical with jut illustrated in the body organ expansion instrument 1 of above-described embodiment.
In addition, in the body organ expansion instrument 50 of the present embodiment, have the draught line position and keep using parts, this draught line position keeps being positioned at the outer surface side of front end side pipe 2 and having with parts can be for the path of draught line 6 perforations.Particularly, in the present embodiment, be provided with the cartridge 8 that the function of parts and above-mentioned jut is used in this draught line position maintenance of performance.By being set, such draught line position keeps to make draught line 6 carry out good traction with parts 8.And preferred draught line position keeps being positioned at draught line 6 with parts 8 and takes on the base end side extended line of the fixed part 6d that uses cartridge 5 with support.And, keep using parts as the draught line position, can for the path of draught line 6 perforations, can be endless member or the endless member with otch, channel form parts etc. as long as have.State in the use in the situation of endless member, preferably arrange a plurality of.
As cartridge 8, use the body that has the inner chamber larger than the external diameter of traction element in inside.As cartridge 8, its length is 10mm～180mm, is preferably 15～120mm; Its external diameter is 0.15～0.8mm, is preferably 0.2～0.5mm; Its internal diameter is preferably about the large 0.05～0.2mm of external diameter than traction element.
And preferably this draught line position keeps also being fixed on the outer surface of front end side pipe 2 with parts, but also can be fixed on the inner surface of intervalve 7, but also can be arranged to the forward distolateral extension of front end from the cardinal extremity side pipe.And, can also keep in the draught line position covering above-mentioned such low frictional properties resin that increases sliding with the inner surface of parts.
And, such as Figure 24, Figure 27, Figure 30 to shown in Figure 32, body organ expansion instrument 50 of the present invention have on the cardinal extremity that is fixed on cardinal extremity side pipe 4, specifically be fixed on operating portion 9 on the sleeve pipe 42 on the cardinal extremity of being located at cardinal extremity side pipe 4.
Operating portion 9 in the body organ expansion instrument 50 of the present embodiment also has the rotation of draught line winding mechanism is carried out the locking mechanism of dissoluble locking and limited the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line except having the draught line winding mechanism.
Operating portion 9 has operating portion shell 91, and operating portion shell 91 is made of housing main body 91a, the cover 91b that seals the peristome of this housing main body 91a.Leading section at operating portion shell 91 is fixed with the adapter 93 that is connected for sleeve pipe 42.In addition, shell 91 has the draught line path 97 that extends inward from the front end of leading section.And the internal path of adapter 93 is fixed on the leading section of operating portion shell 91 by fixed part 96 in the mode that is communicated with draught line path 97.
Such as Figure 27, Figure 30 and shown in Figure 33, adapter 93 has: the connector body 93a of hollow; Connection port 93b and lateral port 93c from this connector body 93a extension; Draught line 6 can be slided and liquid-tight the seal member 93d that keeps draught line 6.And, connect the base end part that is installed in the sleeve pipe 42 of cardinal extremity side pipe 4 with port 93b.
Constituent material as operating portion shell 91, adapter 93 and sleeve pipe 42 can use hard or semi-rigid material.As hard or semi-rigid material, can use the metal such as synthetic resin, rustless steel, aluminum or aluminum alloy of Merlon, polyolefin (polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer), styrene resin [such as styrene, MS resin (methacrylic resin-styrol copolymer), MBS resin (methacrylic resin-butylene-styrene copolymer)], polyester etc.
And shell 91 has line protecting tube 95, and this line protecting tube 95 surrounds draught line path 97 and arranges, and the outstanding and in the enclosure extension from the cardinal extremity of draught line path 97.This line protecting tube 95 is formed by flexible or elastomeric material.
Constituent material as seal member 93d and line protecting tube 95 can use elastomeric material.As elastomeric material, can use synthetic resin elastomer such as rubber-like, olefin type elastomer (for example polyethylene elastomer, polypropylene elastomer), polyamide elastomer, phenylethylene elastomer (for example, styrene-butadiene-styrene, styrene-isoprene-styrene copolymer-, styrene-ethylene butylene-styrene copolymer), polyurethane, carbamates elastomer, fluorine type resin elastomer of natural rubbers such as the synthetic rubber such as urethane rubber, silicone rubber, butadiene rubber, latex rubber etc. etc.
Housing main body 91a comprises: as shown in figure 30 for the peristome 98 that operation is partly given prominence to rotating roller 61; Shown in Figure 33 be arranged at roller 61 on the locking that engages of the jut of gear part 62 with rib 99; The bearing portion 94b that one end 64b of the rotating shaft of pair roller 61 takes in.Cover 91b has the bearing portion 94a that the other end 64a of the rotating shaft of pair roller 61 takes in.Locking forms shape between the jut that can enter on the gear part 62 that is formed at roller 61 with rib 99.In addition, such as Figure 31 and shown in Figure 32, bearing portion 94a, 94b take in an end 64b and the other end 64a of the rotating shaft of roller 61, and are the oval shapes that extends with the direction of rib 99 away from above-mentioned locking.Need to prove, the shape of bearing portion 94a, 94b is not limited to oval shape, can remove and the distance that engage of locking with rib as long as can move.For example, bearing portion 94a, 94b are shaped as rectangle, ellipse etc., and can be the such Pear-Shapeds of operating portion 100 among the aftermentioned embodiment.Especially in the present embodiment, such as Figure 31 and shown in Figure 32, bearing portion 94a, 94b parallel with the rotating shaft of roller 61 and downwards (vertical of peristome 98) extend and form, and roller 61 has removable locking with the length of the above distance of the height of rib 99.
And the draught line winding mechanism consists of by roller 61 with according to the coiling axial region 63 that the rotation of this roller 61 is rotated.Coiling axial region 63 is controlled or the base end part of fixed traction line 6.Specifically, shown in figure 32, have the anchor portion 65 that forms greatlyr than line 6 at the base end part of draught line 6, be provided with the slit 63a that can take in draught line 6 at coiling axial region 63.And, in the slit 63a of coiling axial region 63, take in the base end part of draught line 6, and make anchor portion 65 be positioned at the cardinal extremity outside of slit 63a.Thus, as shown in figure 35, coiling axial region 63 is reeled line 6 on the outer surface by rotation.Need to prove, the mode that coiling axial region 63 was controlled or be fixed to draught line 6 is not limited to above-mentioned, can be any mode.For example, cardinal extremity or the base end part of draught line 6 directly can be fixed on the wireline reel.
In addition, the base end part that is used for being wound of draught line 6 is in order easily to reel and preferred soft parts.The method that becomes the parts of such softness can be to form the method for the base end part of draught line 6 with soft material, or the base end part of draught line 6 is made the method etc. in thin footpath.
And in the present embodiment, coiling axial region 63 is coaxial and integrated with rotating roller 61.Therefore, make rotating roller 61 rotations, coiling axial region 63 is simultaneously rotation also.And the coiling amount of preferred draught line is lacked than the rotary manipulation amount of rotating roller.Can reel lentamente like this, thereby support is taken in cartridge 5 and also can slowly and well be moved to base end side.In the present embodiment, because the external diameter of coiling axial region forms littlely with rotating roller section than operation, so the coiling amount of draught line is lacked than the rotary manipulation amount of rotating roller.
In addition, preferably reel 1～20 times of external diameter of axial region of the preferred 1～60mm of the external diameter of coiling axial region 63, especially preferred 3～30mm, the external diameter of rotating roller, especially preferred 1～10 times.In addition, about the preferred 10～60mm of the external diameter of rotating roller, especially preferred 15～50mm.
And rotating roller and coiling axial region are not limited to the parts of such one, also can use the other parts of the driven rotation along with the rotation of rotating roller to form.As the rotation transfer mode of rotating roller, can be the gear mode, band modes etc. are mode arbitrarily.The surface portion that might contact when pair roller 61 operates in addition, preferably is difficult to the surface of sliding.For example, on the surface portion that preferably when pair roller 61 operates, might contact, carry out annular knurl processing, embossing processing, high friction material covering etc.
And the operating portion 9 of the present embodiment has the rotation of draught line winding mechanism is carried out the locking mechanism of dissoluble locking and restriction draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
To shown in Figure 33, operation has gear part 62 coaxial and the one rotation with rotating roller 61 such as Figure 27, Figure 30.In addition, operation is partly exposed from peristome 98 with rotating roller 61, and this part is as operating portion.And, the end 64b of rotating shaft that rotating roller has the other end 64a of the rotating shaft that is arranged at a side and is arranged on (the specifically side of take up roll) of another side.And, in shell 91, have the force application component 92 of rotating roller 61 to the peristome 98 direction application of forces of shell.Specifically, the force application part 92b by force application component 92 comes pair roller 61 application of forces.And, being provided with locking with rib 99 at housing main body 91a, this locking can enter between the jut by the gear part 62 of the rotating roller 61 of the force application part 92b application of force with rib 99.Therefore, rotating roller 61 becomes state shown in Figure 33 under the state that is biased the parts 92b application of force, and locking engages with the jut of gear part 62 with rib 99, therefore can not rotate.And, if to pushing rotating roller 61 away from locking with the direction of rib 99, the direction of arrow specifically shown in Figure 34, then mobile among an end 64b of the rotating shaft of rotating roller and bearing portion 94a, the 94b of other end 64a on being arranged at shell 91, thus state shown in Figure 34 become.Under this state, locking is disengaged with the engaging of jut of gear part 62 with rib 99, so can rotate.Therefore, the rotation that the operating portion 9 of the present embodiment limits under the state that does not push rotating roller 61, and have the locking mechanism that the rotation of draught line winding mechanism is carried out dissoluble locking.
And, in the operating portion of the present embodiment, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line by the force application component 92 with above-mentioned force application part 92b and said gear section 62.Force application component 92 has force application part 92b and force application part 92b is fixed in the fixed part 92a of shell 91.And, force application part 92b adopts leaf spring, this leaf spring by fixed part 92a from the rear of gear part 62 (opposite with the leading section of operating portion oppositely) extend to the below of gear part, and the front end that extends into this leaf spring engages with the jut of the bottom of gear part 62.This leaf spring is with the mode butt of the bottom of pressing gear part 62, so roller 61 is subject to as described above to the direction power of the peristome 98 of shell.And, as mentioned above, pushing roller 61 and become the state of Figure 33, thereby roller can rotate, can rotate to the direction of arrow (direction of coiling draught line) as shown in figure 35, but when making roller 61 opposite spin, the front end of the jut of gear part 62 and force application part 92b engaging and stop its rotation.Thus, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.Formation material as the leaf spring of force application part as long as whatsoever material can be brought into play the spring performance, for example can use metal (specifically, spring steel), synthetic resin.
In addition, as the external diameter of gear part 62, about preferred 10～60mm, especially preferred 15～50mm, as the number of teeth, preferred about 4～200, especially preferred 4～70.
In addition, also can be Figure 41～parts shown in Figure 43 as operating portion.
Figure 41 is near the amplification outside drawing of operating portion of the body organ expansion instrument of other embodiment of the present invention.Figure 42 is near the amplification view the operating portion of body organ expansion instrument shown in Figure 41.Figure 43 is be used near the in-built key diagram the operating portion that body organ expansion instrument shown in Figure 41 is described.
The basic structure of the operating portion 100 in the body organ expansion instrument of the present embodiment is identical with aforesaid operations section 9.The main distinction is that shape, coiling axial region 63 and the gear part 62 of shell 101 has the aspect of protecting tube 93e with respect to operation with the allocation position of rotating roller 61, the aspect with axle collar parts 102, adapter 93.
Such as Figure 41 and shown in Figure 42, operating portion 100 has operating portion shell 101.Operating portion shell 101 is that base end side is crooked and with the shape of fillet, thereby is easy to control and easy operation roller under gripping state.In addition, operating portion shell 101 has the adapter installation portion at leading section.But the adapter installation portion is the recess of the base end part of mounted connector 93.
As shown in figure 42, adapter 93 has: the connector body 93a of hollow; Connection port 93b and lateral port 93c from this connector body 93a extension; Draught line 6 can be slided and liquid-tight the seal member 93d that keeps this draught line 6; Draught line protecting tube 93e.Draught line protecting tube 93e is from connector body extension and interior outstanding to shell 101.
The constituent material of operating portion shell 101, adapter 93 is identical with above-mentioned parts.Line protecting tube 93e is made of flexible or elastomeric material.As the constituent material of seal member 93 and line protecting tube 93e, use elastomeric material.As elastomeric material, can use synthetic resin elastomer such as rubber-like, olefin type elastomer (for example polyethylene elastomer, polypropylene elastomer), polyamide elastomer, phenylethylene elastomer (for example, styrene-butadiene-styrene, styrene-isoprene-styrene copolymer-, styrene-ethylene butylene-styrene copolymer), polyurethane, carbamates elastomer, fluorine type resin elastomer of natural rubbers such as the synthetic rubber such as urethane rubber, silicone rubber, butadiene rubber, latex rubber etc. etc.
Shell 101 has such as Figure 41 and the peristome that operation is partly given prominence to rotating roller 61 shown in Figure 42; The locking that engages with the protuberance of the gear part 62 that is arranged at roller 61 as shown in figure 42 rib 99; The bearing portion 94b that one end 64b of the rotating shaft of pair roller 61 takes in; The bearing portion 94a that the other end 64a of the rotating shaft of pair roller 61 takes in.Lock with rib 99 as entering the shape between the jut on the gear part 62 that is formed on roller 61.In addition, shown in Figure 41 and 42, bearing portion 94a, 94b take in an end 64b and the other end 64a of the rotating shaft of roller 61, and are the Pear-Shaped that extends with the direction of rib 99 away from above-mentioned locking.Need to prove, the shape of bearing 94a, 94b is not limited to Pear-Shaped, can remove and the distance that engage of locking with rib as long as can move.For example, the shape of bearing portion 94a, 94b can be Long Circle, rectangle, ellipse etc.Especially in the operating portion 100 of the present embodiment, such as Figure 41 and shown in Figure 42, above-mentioned bearing portion 94a, 94b form Pear-Shaped.Therefore, bulldozing operation rotating roller 61, make end 64a, the 64b of the rotating shaft of the roller 61 in the distolateral space that is accommodated in bearing portion 94a, 94b stride across the relative flank of the central part medial surface that is formed on bearing portion 94a, 94b, thereby end 64a, the 64b of the rotating shaft of roller 61 become the state in another the distolateral space that is accommodated in bearing portion 94a, 94b.Under this state, roller 61 is biased the parts application of force, but the relative flank butt of end 64a, the 64b of the rotating shaft of roller 61 and the central part medial surface that is formed on bearing portion 94a, 94b, so in the distolateral space of bearing portion 94a, 94b, can not move.Therefore roller 61 is maintained at rotatable state.
And in the present embodiment, operating portion 100 has axle collar parts 102.Axle collar parts 102 take in coiling axial region 63 and have and coiling axial region 63 between form the collar part 104 of annulus.By this collar part 104, the draught line that can prevent from being wound on the coiling axial region 63 is loosening.In addition, axle collar parts 102 also have the function of rocking of inducing of suppressing that rotating roller moves when pushing and rotating roller.Axle collar parts 102 carry out the axle supporting by pin 103.Thus, such as Figure 41 and shown in Figure 42, bearing portion 94a, 94b form the circular-arc of mitigation centered by pin 103, and roller 61 has the locking of can moving with the length of the above distance of the height of rib 99.In addition, as shown in figure 43, axle collar parts 102 have the path 105 that arrives from the side the space in the collar part 104, and draught line 6 connects this path 105 and is fixed on coiling axial region 63.
And the draught line winding mechanism consists of by roller 61 with according to the coiling axial region 63 that the rotation of this roller 61 is rotated.Coiling axial region 63 is controlled or the base end part of fixed traction line 6.Specifically, as shown in figure 42, have the anchor portion 65 that forms greatlyr than line 6 at the base end part of draught line 6, be provided with the slit 63a that can take in draught line 6 at coiling axial region 63.And, in the slit 63a of coiling axial region 63, take in the base end part of draught line 6, and so that anchor portion 65 is positioned at the cardinal extremity outside of slit 63a.Thus, line 6 is winding to the outer surface of coiling axial region 63 by 63 rotations of coiling axial region.Need to prove, the mode that coiling axial region 63 was controlled or be fixed to draught line 6 is not limited to above-mentioned, can be any mode.For example, cardinal extremity or the base end part of draught line 6 directly can be fixed on the wireline reel.
In addition, the base end part that is wound of draught line 6 is in order easily to reel and preferred soft parts.The method that becomes the parts of such softness can be to form the method for the base end part of draught line 6 with soft material, or the base end part of draught line 6 is made the method etc. in thin footpath.
And in the present embodiment, coiling axial region 63 is coaxial and integrated with rotating roller 61.And as shown in figure 43, coiling axial region 63 is arranged at a side of rotating roller 61.And, making rotating roller 61 rotations, coiling axial region 63 is simultaneously rotation also.And the coiling amount of preferred draught line is lacked than the rotary manipulation amount of rotating roller.Can reel lentamente like this, thereby support is taken in cartridge 5 and also can slowly and well be moved to base end side.In the present embodiment, because the external diameter of coiling axial region forms littlely with rotating roller section than operation, so the coiling amount of draught line is lacked than the rotary manipulation amount of rotating roller.
In addition, preferably reel 1～20 times of external diameter of axial region of the preferred 1～60mm of the external diameter of coiling axial region 63, especially preferred 3～30mm, the external diameter of rotating roller, especially preferred 1～10 times.In addition, about the preferred 10～60mm of the external diameter of rotating roller, especially preferred 15～50mm.
And rotating roller and coiling axial region are not limited to the parts of such one, also can use the other parts of the driven rotation along with the rotation of rotating roller to form.As the rotation transfer mode of rotating roller, can be the gear mode, band modes etc. are mode arbitrarily.The surface portion that might contact when pair roller 61 operates in addition, preferably is difficult to the surface of sliding.For example, on the surface portion that preferably when pair roller 61 operates, might contact, carry out annular knurl processing, embossing processing, high friction material covering etc.
And the operating portion 100 of the present embodiment has the rotation of draught line winding mechanism is carried out the locking mechanism, restriction draught line winding mechanism of dissoluble locking to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
Such as Figure 41～shown in Figure 43, operation has gear part 62 coaxial and that one is rotated with rotating roller 61.And as shown in figure 43, gear part 62 is arranged at the another side side face of the face opposition side that is provided with coiling axial region 63 (in other words, with) of rotating roller 61.Therefore, gear part 62 and coiling axial region 63 become the state that the wall that consists of with roller section is cut apart that is operated.
In addition, operation is partly exposed from peristome 98 with rotating roller 61, and this part is as operating portion.And, the other end 64a of rotating shaft that rotating roller has an end 64b of the rotating shaft that is arranged at a side (the specifically side of gear part) and is arranged on (the specifically side of wireline reel) of another side.
And, in shell 101, have the force application component 92 of rotating roller 61 to the peristome direction application of force of shell.Specifically, the force application part 92b by force application component 92 comes pair roller 61 application of forces.And, being provided with locking with rib 99 at shell 101, this locking can enter between the jut by the gear part 62 of the rotating roller 61 of the force application part 92b application of force with rib 99.Therefore, rotating roller 61 becomes state shown in Figure 42 under the state that is biased the parts 92b application of force, and locking engages with the jut of gear part 62 with rib 99, therefore can not rotate.And, if to away from locking with the direction of rib 99 pushing rotating roller 61, then an end 64b of the rotating shaft of rotating roller and other end 64a on being arranged at shell 101 bearing portion 94a and 94b in mobile and can rotate.Therefore, the rotation that the operating portion 100 of the present embodiment limits under the state that does not push rotating roller 61, and have the locking mechanism that the rotation of draught line winding mechanism is carried out dissoluble locking.
And, in the operating portion of the present embodiment, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line by the force application component 92 with above-mentioned force application part 92b and said gear section 62.Force application component 92 has force application part 92b and force application part 92b is fixed in the fixed part 92a of shell 101.And, force application part 92b adopts leaf spring, this leaf spring by fixed part 92a from the rear of gear part 62 (opposite with the leading section of operating portion oppositely) extend to the below of gear part, and the front end that extends into this leaf spring engages with the jut of the bottom of gear part 62.This leaf spring is with the mode butt of the bottom of pressing gear part 62, so roller 61 is subject to as described above to the direction power of the peristome 98 of shell.And, as mentioned above, pushing roller 61, thus roller can rotate.But can be to the rotation of the direction of arrow (direction of coiling draught line) of Figure 42, but when making roller 61 opposite spin, the front end engaging of the jut of gear part 62 and force application part 92b and stop its rotation.Thus, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
The external diameter of gear part 62 is less than the external diameter of rotating roller, as the external diameter of gear part 62, and preferred 10～60mm, especially preferred 15～50mm, as the number of teeth, preferred 4～200, especially preferred 4～70.
And in this operating portion 100, as shown in figure 43, force application part (leaf spring) 92b enters between the side of the inner surface of shell 101 and rotating roller 61, its front end and gear part 62 butts.Thus, force application part 92b is subject to the restriction of the side of the inner surface of shell 101 and rotating roller 61 in the horizontal movement of (horizontal direction).
And in the axle collar parts 102 that operating portion 100 has, an end is by pin 103 axles supportings, the collar part 104 of the other end take in coiling axial region 63 and and coiling axial region 63 between form annulus.This annulus is not very large space, be than and the outer surface of the line of reeling between the annulus of narrow space.And, as shown in figure 43, axle collar parts 102 form to have in the part by pin 103 axles supportings and equate with the inside dimensions of shell 101 or the heavy section 102a of smaller width, lean on the position formation of collar part 104 sides can enter thinner wall section 102b between the side of the inner surface of shell 101 and rotating roller 61 than this heavy section 102a.Size between the side of the thickness of this thinner wall section 102b and the inner surface of shell 101 and rotating roller 61 equates or is thinner.Therefore, rotating roller 61 forms side to winder and is limited by these axle collar parts 102 in the movement of horizontal (horizontal direction), and, can form side in the laterally movement of (horizontal direction) to gear part by restricting rotation roller 61 by above-mentioned force application part 92b.Therefore can suppress rocking of rotating roller 61.
The below illustrates the using method of body organ expansion instrument 50 of the present invention with reference to the accompanying drawings.
At first, in the peristome 24 of the front end component of Figure 24 and body organ expansion instrument shown in Figure 25, be inserted in the end of in most cases having kept somewhere seal wire in vivo, and seal wire (not shown) is passed from base end side opening 23.Then, be inserted in the guiding catheter (not shown) that inserts in vivo, and advance body organ expansion instrument 50 along seal wire, so that support is taken in and taken in the position with the support of cartridge 5 and be positioned at narrow as target.
Then, after rotating roller 61 is used in the operation of bulldozing operation section 9, make roller in the direction of arrow rotation of Figure 35.Thus, draught line 6 is wound onto the outer peripheral face of coiling axial region 63, and support is taken in cartridge 5 and moved to axial base end side.At this moment, because the rear end face of support 3 is connected on the front end face of bracket clamp bonding part 22 of front end side pipe 2 by fastening, so along with support is taken in movement with cartridge 5, the front opening that support 3 is taken in cartridge 5 from support is released.Because this is emitted, as shown in figure 31, support 3 self expandables are also expanded narrow, and be retained in the narrow.
The following describes the body organ expansion instrument 60 of other embodiment of the present invention.
Figure 37 is near the amplification outside drawing of leading section of the body organ expansion instrument of other embodiment of the present invention.Near the leading section of body organ expansion instrument shown in Figure 37 amplification view is identical with Figure 11.With reference to Figure 11.The key diagram that describes for the effect to body organ expansion instrument shown in Figure 37 is identical with Figure 12.With reference to Figure 12.
The difference of the body organ expansion instrument 60 of the present embodiment and the body organ expansion instrument 50 of above-described embodiment is, do not have the intervalve aspect different with the mode of front end side pipe, other aspects are identical with above-mentioned body organ expansion instrument 50, for the identical label of parts mark same as described above.
In addition, the difference of the body organ expansion instrument 60 of the present embodiment and the body organ expansion instrument 10 of above-described embodiment is, do not have the intervalve aspect different with the mode of front end side pipe, and other aspects are identical.Therefore, with reference to the explanation of above-mentioned body organ expansion instrument 10, below carry out simple explanation.
The body organ expansion instrument 60 of the present embodiment has front end side pipe 2a, cardinal extremity side pipe 4, support and takes in cartridge 5a, support 3 and draught line 6.
Such as Figure 37, Figure 11 and shown in Figure 12, whole support is taken in the cartridge that roughly uses equal outer diameter with cartridge 5a.In addition, on taking in cartridge 5a, support also slit shown in Figure 16 59 can be set.As shown in figure 16, the jut 29 that is formed at the outer surface of front end side pipe can move in this slit 59.And in the present embodiment, support is taken in cartridge 5a and can be moved to base end side, until the front end of this slit 59 and jut 29 butts.Therefore, slit 59 with take in from the support of storage support 3 that to take in equal in length or the slit 59 of front end of usefulness cartridge 5a to support with the cardinal extremity of the support 3 the cartridge 5 slightly longer.As shown in figure 12, support 3 is released and self expandable and expand narrow, and is retained in the narrow.
Support is taken in illustrate in the body organ expansion instrument 1 with cartridge 5a and above-described embodiment identical.And, take in the leading section of cartridge 5a at support and to have taken in support 3.Identical in support 3 and above-described embodiment.
Such as Figure 37, Figure 11 and shown in Figure 12, front end side pipe 2a has the body that penetrates into the guidewire lumen 21 of cardinal extremity from front end, and has the leading section that is formed by the front end component 25 that is fixed in front end, also has front opening 24.Need to prove, leading section also can be integrally formed with the front end side pipe.And explanation is identical in the body organ expansion instrument 1 of front end side pipe 2a and above-described embodiment.
And, in the body organ expansion instrument 60 of the present embodiment, to compare with the cardinal extremity side pipe 4 forward distolateral maximum diameter external diameters partly than body organ expansion instrument 60, the external diameter of cardinal extremity side pipe is little.Specifically, the external diameter that support is taken in cartridge 5a is maximum outside diameter, and the external diameter of cardinal extremity side pipe 4 is less than this external diameter.And in the present embodiment, such as Figure 37, shown in Figure 11, the leading section of cardinal extremity side pipe 4 is fixed on the base end part of front end side pipe 2a, and so that the central shaft of cardinal extremity side pipe 4 from the central shaft of front pipe 2a to the direction skew of leaving base end side opening 23.
And front end side pipe 2a has from draught line 6 and support and takes in extending and for the draught line path 27 of draught line perforation to base end side near the fixed part 6d of cartridge 5a.Need to prove, in the present embodiment, draught line forms by the outer surface that is arranged at front end side pipe 2a and at axially extended recess with path 27.And draught line also can be the chamber of extending in the heavy wall of front end side pipe 2a with path.
And in the body organ expansion instrument 60 of the present embodiment, by the rotating roller 61 of operating portion 9 of operation draught line 6, support is taken in cartridge 5a and is moved to axial base end side.At this moment, the rear end face of support 3 abut to front end side pipe 2a minor diameter part the cardinal extremity face and engage, so take in movement with cartridge 5a along with support, the front opening that support 3 is taken in cartridge 5a from support is released.Emit by this, as shown in figure 12, support 3 self expandables and with narrow expansion, and be retained in the narrow.
And in above-mentioned all embodiment, draught line also can arrange a plurality of, arranges particularly more than two or two.
The body organ expansion instrument 70 of the embodiment that Figure 38 is extremely shown in Figure 40 has two draught lines.
Figure 38 is that the amplification outside drawing is omitted in the part of the body organ expansion instrument of other embodiment of the present invention.
Figure 39 is the amplification view along the L-L line of Figure 38.Figure 40 is the amplification view along the M-M line of Figure 38.
The difference of the body organ expansion instrument 70 of the present embodiment and the body organ expansion instrument 50 of above-described embodiment just is provided with two draught lines and consequent different.Other aspects are identical with above-mentioned body organ expansion instrument 50, to the identical label of parts mark same as described above.Need to prove, two draught lines also can be set in the above-mentioned body organ expansion instrument 60.Structure with two draught lines is identical with the body organ expansion instrument 20 of above-described embodiment.
Such as Figure 38 and shown in Figure 39, the support in the body organ expansion instrument 70 of the present embodiment is taken in cartridge 5 and is extended to front from cardinal extremity, and has two slit 52a, 52b that are arranged on relative position.And, correspondingly, be provided with two root tubular part 8a, the 8b that is configured in relative position at front end side pipe 2.
And, taking in the base end part of using cartridge 5 at support, two draught line 6a, 6b are fixed on relative position.And to shown in Figure 40, draught line 6a connects tubular part 8a and in the 4 interior extensions of cardinal extremity side pipe, is fixed at base end part on the wireline reel of operating portion 9 such as Figure 38.Similarly, draught line 6b connects tubular part 8b and in the 4 interior extensions of cardinal extremity side pipe, is fixed at base end part on the wireline reel of operating portion 9.Need to prove, using in two draught line 6a, the 6b situation, two lines also can become one at base end part.
And, in body organ expansion instrument of the present invention, the front pipe has the support-moving that is arranged at than the forward distolateral position of the front end of above-mentioned support and suppresses to use protuberance, if becoming forward end, the front of this support-moving restraining outburst section goes to the diminishing tapering of diameter, then can be in limit bracket forward end side shifting, make the leading section of utensil be easy to be inserted into the target site of organism organ.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument comprises draught line position maintenance parts, this draught line position keeps being positioned at the outer surface of front end side pipe and having the path that connects for draught line with parts, and then draught line can draw well.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument has the jut of the outer surface side that is positioned at the front end side pipe, and support is taken in cartridge to have from cardinal extremity forward distolateral extension and the slit that can move for jut, and then support is taken in cartridge and can be moved to base end side well.
In addition, in body organ expansion instrument of the present invention, if body organ expansion instrument has the displacement restriction section that limit bracket is taken in the distance that moves to base end side with cartridge, can prevent that then support from taking in the excessive movement with cartridge.
The below illustrates the body organ expansion instrument of other embodiments of the invention with reference to the accompanying drawings.
Figure 44 is that front view is omitted in the part of the body organ expansion instrument of embodiments of the invention.Figure 45 is near the amplification outside drawing the operating portion of body organ expansion instrument shown in Figure 44.Figure 46 is near the enlarged left view the operating portion of body organ expansion instrument shown in Figure 44.Figure 47 is the amplification inclinating view of the operating portion of body organ expansion instrument shown in Figure 44.Figure 48 is the cutaway view along the O-O line of Figure 46.Figure 49 is the amplification view along the P-P line of Figure 48.Figure 50 and Figure 51 are the key diagrams be used to the effect that body organ expansion instrument of the present invention is described.
The basic structure of the body organ expansion instrument 80 of the present embodiment is identical with above-mentioned body organ expansion instrument 50.The body organ expansion instrument 80 of the present embodiment has operating portion 89, and this operating portion 89 has coiling draught line 6 so that support is taken in the coil of wire of the line length that the draught line winding mechanism that moves to base end side with cartridge 5 and restriction reeled by this draught line winding mechanism around the amount limiting mechanism at the base end part of cardinal extremity side pipe 4.
In the body organ expansion instrument 80 of the present embodiment, in the body organ expansion instrument that uses self expandable type support, the base end side opening is not the cardinal extremity of utensil, but be positioned at the base end side of front end side pipe, so when carrying out support indwelling operation, be easy to be replaced by other biological body organ expansion utensil.And, by draught line is drawn to base end side, can emit support, thus carry out support emit operation the time, the position of support is mobile hardly.And, unnecessary bending, the damage of the support that the overwind of the line of base end side causes can not occur to be drawn to because of the constraint body with support.
As operating portion 89, preferably has operating portion shell 91 (91a, 91b), the draught line winding mechanism has operation rotating roller 61, and this rotating roller 61 has the part of exposing from operating portion shell 91, and by making rotating roller 61 rotations draught line 6 is wound to base end side.Can make thus operating portion self compactness, and can under the state of controlling the operating portion shell, make the operation of exposing be rotated operation with rotating roller, so can carry out reliably the operation that support is emitted from body organ expansion instrument by enough handss.
In addition, as body organ expansion instrument 80, preferably with than the cardinal extremity side pipe 4 forward distolateral maximum gauge external diameters partly from body organ expansion instrument 80 compare, the external diameter of cardinal extremity side pipe 4 is little.Thus, even make the seal wire that extends to base end side from the base end side opening under the state of the side extension of cardinal extremity side pipe, also can equate with the external diameter than the forward distolateral maximum gauge part of the cardinal extremity side pipe of body organ expansion instrument, thereby can be inserted into thin blood vessel.
The body organ expansion instrument of the present embodiment have front end side pipe 2, cardinal extremity side pipe 4, support take in cartridge 5, support 3, draught line 6 and have the winding mechanism of draught line 6 and the coil of wire around the operating portion 89 of amount limiting mechanism.
And, in the organism expansion utensil 80 of the present embodiment, has intervalve 7, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 80 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of draught line 6 is taken in cartridge 5 and is fixed with support in intervalve 7, and draught line 6 is to pass between intervalve 7 and the front end side pipe 2 and to the parts of cardinal extremity side pipe 4 interior extensions.Thus, draught line can not expose.
Support is taken in cartridge 5 with illustrated identical in the body organ expansion instrument 1 of above-described embodiment.In addition, as support 3, no matter be which type of support, so long as so-called self expandable type support as described above gets final product.For example, as support 3, can use illustrated support in the body organ expansion instrument 1 of above-described embodiment.Shown in Figure 16,17, front end side pipe 2 is to have the body that penetrates into the guidewire lumen 21 of cardinal extremity from front end, and has the leading section that is formed by the front end component 25 that is fixed in front end, also has front opening 24.Need to prove, front end side pipe illustrated in the body organ expansion instrument 1 of front end side pipe 2 and above-described embodiment is identical.In addition, illustrated front end component is identical in the body organ expansion instrument 1 of front end component 25 and above-described embodiment.And as shown in figure 17, front end side pipe 2 has in the restriction body cavity indwelling support 3 to bracket clamp bonding part 22 that base end side moves.Fastening section illustrated in the body organ expansion instrument 1 of fastening section 22 and above-described embodiment is identical.
Such as Figure 44, Figure 16, Figure 17, Figure 28, shown in Figure 29, cardinal extremity side pipe 4 is to penetrate into the body of cardinal extremity from front end, and has the sleeve pipe 42 that is fixed in cardinal extremity.And the amplification outside drawing of the leading section adnexa of body organ expansion instrument shown in Figure 44 is identical with Figure 25, with reference to Figure 25.The amplification view of the leading section adnexa of body organ expansion instrument shown in Figure 45 is identical with Figure 26, with reference to Figure 26.The leading section of cardinal extremity side pipe 4 engages with the base end part of front end side pipe 2.Cardinal extremity side pipe 4 has can intert the draught line of draught line 6 with chamber 41 in inside.Cardinal extremity side pipe illustrated in the body organ expansion instrument 1 of cardinal extremity side pipe 4 and above-described embodiment is identical.
And, in the body organ expansion instrument 80 of the present embodiment, also has intervalve 7, this intervalve 7 surrounds base end side and the support of front end side pipe 2 and takes in the base end side of using cartridge 5, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And, in the body organ expansion instrument 80 of the present embodiment, intervalve 7 when surrounding not limit bracket take in cartridge 5 to the movement of base end side, one end of draught line 6 is taken in cartridge and is fixed with support in intervalve 7, draught line 6 connects between intervalve 7 and the front end side pipe 2, and to the 4 interior extensions of cardinal extremity side pipe.
The base end part of front end side pipe 2 is in intervalve 7 interior extensions, and base end part exposes from the cardinal extremity of intervalve.In addition, the leading section of cardinal extremity side pipe 4 enters in the base end part of intervalve 7.Like this, front end side pipe 2, cardinal extremity side pipe 4 and intervalve 7 are fixed respectively at the base end part of intervalve 7 liquid-tightly.In addition, the chamber 41 of cardinal extremity side pipe 4 and 7 interior connections of intervalve.In addition, as shown in Figures 2 and 3, the leading section diameter of intervalve 7 diminishes or is crooked.The front end of preferred intervalve 7 not limit bracket is taken in the contacting with the outer surface that support is taken in cartridge 5 movably of cartridge 5 liquid-tightly, also can not contact.Intervalve illustrated in the body organ expansion instrument 1 of intervalve 7 and above-described embodiment is identical.
And, in body organ expansion instrument 80, also has draught line 6, one end of this draught line 6 is fixed on support and takes in on the cartridge 5 and in the 4 interior extensions of cardinal extremity side pipe, draws this draught line 6 by the base end side to the cardinal extremity side pipe and support is taken in cartridge 5 move to base end side.Draught line 6 is with illustrated identical in the body organ expansion instrument 1 of above-described embodiment.
In addition, in the body organ expansion instrument 80 of the present embodiment, be provided with and take in jut (tubular part) 8 with the slit 52 interior movements of cartridge 5 at support at the base end side outer surface of front end side pipe 2.Jut (tubular part) 8 is identical with jut illustrated in the body organ expansion instrument 1 of above-described embodiment.In addition, slit 52 is identical with slit illustrated in the body organ expansion instrument 1 of above-described embodiment.In the body organ expansion instrument 80 of the present embodiment, also can have limit bracket and take in the displacement restriction section of cartridge to the displacement of base end side.Specifically, move to base end side by support is taken in cartridge 5, the front end butt of jut 8 and slit 52 is taken in cartridge 5 continuation with limit bracket and to be moved to base end side.
In addition, in the body organ expansion instrument 80 of the present embodiment, have the draught line position and keep using parts, this draught line position keeps being positioned at the outer surface side of front end side pipe 2 and having with parts can be for the path of draught line 6 perforations.Particularly, in the present embodiment, be provided with the cartridge 8 that the function of parts and above-mentioned jut is used in this draught line position maintenance of performance.The draught line position keeps with parts (cartridge) 8 with illustrated identical in the body organ expansion instrument 1 of above-described embodiment.
And, shown in Figure 44, Figure 45, Figure 46 to Figure 51, body organ expansion instrument 80 of the present invention have on the cardinal extremity that is fixed on cardinal extremity side pipe 4, specifically be fixed on operating portion 89 on the sleeve pipe 42 on the cardinal extremity of being located at cardinal extremity side pipe 4.
Operating portion 89 in the body organ expansion instrument 80 of the present embodiment also has the coil of wire around the amount limiting mechanism except having the draught line winding mechanism.And, in the operating portion 89 in the body organ expansion instrument 80 of the present embodiment, have the rotation of draught line winding mechanism is carried out the locking mechanism of dissoluble locking and limited the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
Operating portion 89 has operating portion shell 91, and operating portion shell 91 is made of housing main body 91a, the cover 91b that seals the peristome of this housing main body 91a.Leading section at operating portion shell 91 is fixed with the adapter 93 that is connected for sleeve pipe 42.In addition, shell 91 has the draught line path 97 that extends inward from the front end of leading section.And the internal path of adapter 93 is fixed on the leading section of operating portion shell 91 by fixed part 96 in the mode that is communicated with draught line path 97.
Such as Figure 45,46 and shown in Figure 49, adapter 93 has: the connector body 93a of hollow; Connection port 93b from this connector body 93a extension; Draught line 6 can be slided and liquid-tight the seal member 93d that keeps draught line 6.And, connect the base end part that is installed in the sleeve pipe 42 of cardinal extremity side pipe 4 with port 93b.And adapter 93 also can have the lateral port that is communicated with connector body.
Operating portion 89 in this body organ expansion instrument 80 except the coil of wire around the amount limiting mechanism, all identical with illustrated operating portion 9 in the body organ expansion instrument 50 of above-described embodiment.
And, showing such as Figure 44 to Fig. 5, the body organ expansion instrument 80 of this present embodiment has the coil of wire around the amount limiting mechanism.And, the coil of wire in the present embodiment consists of around the thread like body 71 of the specific length that the amount limiting mechanism is controlled by an end 71b section of being operated, the other end 71a of thread like body 71 be fixed in operation with the coiling axial region 63 of rotating roller 61 on or on the thread like body coiling axial region that arranges respectively with wireline reel section (not shown), and by operating with rotating roller 61 to the rotation of the coil of wire around direction, thread like body 71 is wound on ormal weight after coiling axial region 63 or the thread like body coiling axial region, can not continue to reel.
Specifically, control an end 71b of thread like body 71 at operating portion 89, and take in and rolling up thread like body 71, rotatable thread like body bobbin 73.Thread like body bobbin 73 other examples shown in Figure 58 are such, have rotating shaft, and this rotating shaft has two end 73a, 73b, and this thread like body bobbin 73 is rotatable by this rotating shaft.And bobbin 73 has endless groove 74 and the groove that is communicated with this endless groove or the hole 75 of thread like body coiling usefulness.In addition, the other end 71a of thread like body 71 is used on the coiling axial region 63 of rotating roller 61 being held in operation.Specifically, be arranged at the other end that operates insertion thread like body in the slit 72 (with reference to Figure 48) of using on the rotating roller 61, and controlling the other end 71a that forms the bellying larger than the width of slit 72.
Thus, shown in Figure 50 and Figure 51, make operation with rotating roller 61 during along the rotation of the coiling direction of draught line 6, the draught line that coiling axial region 63 is controlled is wound, and the thread like body 71 that coiling axial region 63 is controlled also is wound.By carrying out the coiling of this thread like body 71,73 rotations of thread like body bobbin, and the thread like body when being wound on bobbin on is when all being sent, and bobbin just can not rotate, and operates with rotating roller can not continue to rotate.Thus, can avoid the hyper-traction of draught line.
And, in the present embodiment, although formed the parts of winding wire-like body 71 on coiling axial region 63, be not limited to this, except coiling axial region 63, can also thread like body coiling axial region be set to carry out the coiling of thread like body with rotating roller 61 in operation.
The coiling effective length of preferred thread like body 71 (in other words, can use at aforesaid operations the length of the axial region coiling of rotating roller) more longer than the axial length of support, in addition, as illustrated embodiment, on the coiling axial region 63 of coiling draught line also during winding wire-like body 71, for the rotation of operation with rotating roller, both coiling amounts are identical, thereby are easy to set the coiling effective length of thread like body.
In addition, as the formation material of thread like body 71, can be any materials, so long as the material that is difficult to rupture gets final product, in addition, preferably be difficult to the material that stretches.As this material, can enumerate stainless steel wire (preferred spring high-tension rustless steel), piano wire (preferably having applied the piano wire of nickel plating or chromium plating), the superelastic alloy line, the wire rod that is formed by various metals such as Ni-Ti alloy, Cu-Zu alloy, Ni-Al alloy, tungsten, tungsten alloy, titanium, titanium alloy, cobalt alloy, tantalums, the higher macromolecular materials of rigidity such as polyamide, polyimides, ultra-high molecular weight polyethylene, polypropylene, fluorine-type resin, the perhaps appropriate combination of these materials.
In addition, the coil of wire is not limited to the mechanism of above-described embodiment around the amount limiting mechanism, only is that the parts that limit the line length of being drawn by the draught line winding mechanism get final product.The above-mentioned coil of wire is the parts that the rotatable amount of rotating roller is used in the restriction operation around the amount limiting mechanism.Also can be the such parts of the operating portion 100 shown in Figure 53 and Figure 54 as such coil of wire around the amount limiting mechanism.
The coil of wire in this operating portion 100 around the amount limiting mechanism by be arranged at operation with the protuberance 81 on the rotating roller 61 and be arranged at operating portion 100 in and operation with rotating roller 61 to the coil of wire around direction rotation behind the ormal weight butt operate the fastening section 82 of rotating with rotating roller 61 continuation with restriction and consist of.
In this operating portion 100, when operation is rotated to the direction of arrow shown in Figure 54 with rotating roller 61, coiling draught line 61, but when protuberance 81 and fastening section 82 butt, roller 6 can not continue rotation, thus winding line can not continue to reel.In this operating portion, can also limit the line length by the traction of draught line winding mechanism.In addition, this operating portion also limits the rotatable amount that rotating roller is used in operation.
And the protuberance 81 of the coil of wire of the present embodiment in the amount limiting mechanism can be adjusted with the allocation position on the rotating roller 61 in operation.Therefore, operation can be adjusted with the rotatable amount of rotating roller 61.Specifically, on the surface that operates with rotating roller 61 a plurality of recesses 84 are set.Particularly in illustrated embodiment, a plurality of recesses 84 have equally spaced been configured.And protuberance 81 is installed on this recess 84 in removable mode.Therefore can select the recess of optional position, thus can adjusting operation with the rotatable amount of rotating roller.
And in the above-described embodiments, protuberance 81 is arranged on operation with on the outer annular surface of rotating roller, and is extending from the outstanding direction of this outer annular surface, but also can be arranged to platen surface.In this case, fastening section is arranged on the position corresponding with protuberance.
In addition, also can be the parts shown in Figure 55 to Figure 58 as operating portion.
Figure 55 is near the enlarged front view of operating portion of the body organ expansion instrument of other embodiment of the present invention.Figure 56 is near the rearview of operating portion of the body organ expansion instrument shown in Figure 55.Figure 57 is near the in-built key diagram the operating portion of the body organ expansion instrument shown in explanation Figure 55.Figure 58 is near the in-built key diagram the operating portion of the body organ expansion instrument shown in explanation Figure 55.
The basic structure of the operating portion 200 of the present embodiment is identical with aforesaid operations section 100.The main distinction is, shell be Figure 58 shape, coiling axial region 63 and gear part 62 with respect to operation with the allocation position of rotating roller 61, have axle collar parts 102 the aspect, operating portion 9 be provided with seal member 88 aspect, have an aspect of thread like body bobbin incorporating section 202.
Shown in Figure 55 to Figure 58, operating portion 200 has operating portion shell 201.Operating portion shell 201 is made of the 1st shell 201a and the 2nd shell 201b.Operating portion shell 201 base end sides and central part are crooked and with the shape of fillet, thereby are easy to control and easy operation roller under gripping state.
And, be fixed with adapter 93 at the cardinal extremity of cardinal extremity side pipe 4.In adapter 93, have and draught line 6 can be slided and liquid-tight the seal member 93d that keeps this draught line 6.In addition, the base end part of cardinal extremity side pipe 4 is outstanding from the base end part of adapter 93, and shown in Figure 57, by fixing with being configured in seal member 88 liquid-tight property in the operating portion 200.And the cardinal extremity of cardinal extremity side pipe 4 connects seal member 88.Need to prove, also can be identical with aforesaid operations section 9, the line protecting tube is set.And operating portion shell 201 has the adapter installation portion at leading section, and shown in Figure 57, the base end side of adapter 93 partly is incorporated in the adapter installation portion and is fixed.
The constituent material of operating portion shell 201, adapter 93 is same as described above.Constituent material as seal member 88, seal member 93d and line protecting tube can use elastomeric material.Same as described above as elastomeric material.
Shell 201 has the peristome that the operation of making is partly given prominence to rotating roller 61 shown in Figure 55 to Figure 58; The locking that shown in Figure 56, engages with the protuberance of the gear part 62 that is arranged at roller 61 rib 99; The bearing portion 94b that one end 64b of the rotating shaft of pair roller 61 takes in; The bearing portion 94a that the other end 64a of the rotating shaft of pair roller 61 takes in.Lock with rib 99 as entering the shape between the jut on the gear part 62 that is formed on roller 61.In addition, shown in Figure 55 and 56, bearing portion 94a, 94b take in an end 64b and the other end 64a of the rotating shaft of roller 61, and are the Pear-Shaped that extends with the direction of rib 99 away from above-mentioned locking.Need to prove, the shape of bearing 94a, 94b is not limited to Pear-Shaped, can remove and the distance that engage of locking with rib as long as can move.For example, the shape of bearing portion 94a, 94b can be Long Circle, rectangle, ellipse etc.Especially in the operating portion 200 of the present embodiment, shown in Figure 55 and Figure 56, above-mentioned bearing portion 94a, 94b form Pear-Shaped.Therefore, bulldozing operation rotating roller 61, make end 64a, the 64b of the rotating shaft of the roller 61 in the distolateral space that is accommodated in bearing portion 94a, 94b stride across the relative flank of the central part medial surface that is formed on bearing portion 94a, 94b, thereby end 64a, the 64b of the rotating shaft of roller 61 become the state in another the distolateral space that is accommodated in bearing portion 94a, 94b.This state of roller 61 is shown in the dotted line of Figure 56.Under this state, roller 61 is biased the parts application of force, but the relative flank butt of end 64a, the 64b of the rotating shaft of roller 61 and the central part medial surface that is formed on bearing portion 94a, 94b, so in the distolateral space of bearing portion 94a, 94b, can not move.Therefore roller 61 is maintained at rotatable state.
And, in the present embodiment, shown in Figure 57 and Figure 58, have axle collar parts 102.Axle collar parts 102 take in coiling axial region 63 and have and coiling axial region 63 between form the collar part 104 of annulus.By this collar part 104, the draught line that can prevent from being wound on the coiling axial region 63 is loosening.In addition, axle collar parts 102 also have the function of rocking of inducing of suppressing that rotating roller moves when pushing and rotating roller.Axle collar parts 102 carry out the axle supporting by pin 103.Thus, shown in Figure 55 and Figure 56, bearing portion 94a, 94b form the circular-arc of mitigation centered by pin 103, and roller 61 has the locking of can moving with the length of the above distance of the height of rib 99.In addition, shown in Figure 58, axle collar parts 102 have two relative notch 105 that arrive from the side the space in the collar part 104.Draught line 6 connects a notch 105 and is fixed on the coiling axial region 63.Thread like body 71 connects another notch 105, and is fixed on the coiling axial region 63.
And the draught line winding mechanism consists of by roller 61 with according to the coiling axial region 63 that the rotation of this roller 61 is rotated.Coiling axial region 63 is controlled or the base end part of fixed traction line 6.Specifically, shown in Figure 57, have the anchor portion 65 that forms greatlyr than line 6 at the base end part of draught line 6, be provided with the slit 63a that can take in draught line 6 at coiling axial region 63.And, in the slit 63a of coiling axial region 63, take in the base end part of draught line 6, and so that anchor portion 65 is positioned at the cardinal extremity outside of slit 63a.Thus, line 6 is winding to the outer surface of coiling axial region 63 by 63 rotations of coiling axial region.Need to prove, the mode that coiling axial region 63 was controlled or be fixed to draught line 6 is not limited to above-mentioned, can be any mode.For example, cardinal extremity or the base end part of draught line 6 directly can be fixed on the wireline reel.
In addition, the base end part that is used for being wound of draught line 6 is in order easily to reel and preferred soft parts.The method that becomes the parts of such softness can be to form the method for the base end part of draught line 6 with soft material, or the base end part of draught line 6 is made the method etc. in thin footpath.
And in the present embodiment, coiling axial region 63 is coaxial and integrated with rotating roller 61.And shown in Figure 55, coiling axial region 63 is arranged at a side of rotating roller 61.And, making rotating roller 61 rotations, coiling axial region 63 is simultaneously rotation also.And the coiling amount of preferred draught line is lacked than the rotary manipulation amount of rotating roller.Can reel lentamente like this, thereby support is taken in cartridge 5 and also can slowly and well be moved to base end side.In the present embodiment, because the external diameter of coiling axial region forms littlely with rotating roller section than operation, so the coiling amount of draught line is lacked than the rotary manipulation amount of rotating roller.
In addition, preferably reel 1～20 times of external diameter of axial region of the preferred 1～60mm of the external diameter of coiling axial region 63, especially preferred 3～30mm, the external diameter of rotating roller, especially preferred 1～10 times.In addition, about the preferred 10～60mm of the external diameter of rotating roller, especially preferred 15～50mm.
And rotating roller and coiling axial region are not limited to the parts of such one, also can use the other parts of the driven rotation along with the rotation of rotating roller to form.As the rotation transfer mode of rotating roller, can be the gear mode, band modes etc. are mode arbitrarily.The surface portion that might contact when pair roller 61 operates in addition, preferably is difficult to the surface of sliding.For example, on the surface portion that preferably when pair roller 61 operates, might contact, carry out annular knurl processing, embossing processing, high friction material covering etc.
In addition, coiling axial region 63 is controlled or the fixing other end of thread like body 71.Specifically, shown in Figure 57 and Figure 58, have bellying (in other words, the anchor portion) 71a that forms greatlyr than thread like body 71 in the other end of thread like body 71, be provided with the slit 72 that to take in thread like body 71 at coiling axial region 63.And the other end of thread like body 71 is incorporated in the above-mentioned slit 72, and so that anchor portion 71a is positioned at the cardinal extremity outside of slit 72.Thus, by 63 rotations of coiling axial region, thread like body 71 is wound onto the outer surface of coiling axial region 63.Need to prove, the mode that coiling axial region 63 was controlled or be fixed to thread like body 71 is not limited to above-mentioned, can be any mode.For example, cardinal extremity or the base end part of thread like body 71 directly can be fixed on the wireline reel.
In addition, the part that is used for being wound of thread like body 71 is in order easily to reel and preferred soft parts.The method that becomes the parts of such softness can be to form the method for the winding part of thread like body 71 with soft material, or the winding part of thread like body 71 is made the method etc. in thin footpath.
And in the present embodiment, coiling axial region 63 is coaxial and integrated with rotating roller 61.And shown in Figure 55, coiling axial region 63 is arranged at a side of rotating roller 61.And, making rotating roller 61 rotations, coiling axial region 63 is simultaneously rotation also.And the coiling amount of preferred thread like body is lacked than the rotary manipulation amount of rotating roller.Can reel lentamente like this.
And, in the present embodiment, although formed thread like body 71 is wound on parts on the coiling axial region 63, be not limited to this, except coiling axial region 63, can also thread like body coiling axial region be set to carry out the coiling of thread like body with rotating roller 61 in operation.
And this operating portion 200 has thread like body bobbin incorporating section 202.Bobbin incorporating section 202 is arranged on the tubular protuberance of the inner surface of operating portion shell 201, takes in rotatable thread like body bobbin in inside.And, be provided with thread like body in the bobbin incorporating section and insert general slit 202a.By having such bobbin incorporating section, the thread like body 71 that can prevent from being wound on the bobbin 73 is loosening.And shown in Figure 58, bobbin 73 has endless groove 74 and the groove that is communicated with this endless groove or the hole 75 of thread like body coiling usefulness.
And the operating portion 200 of the present embodiment has the rotation of draught line winding mechanism is carried out the locking mechanism of dissoluble locking and restriction draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
Shown in Figure 55, Figure 56, operation has the gear part 62 of coaxial and unitary rotation with rotating roller 61.And shown in Figure 56, gear part 62 is arranged at the another side side face of the face opposition side that is provided with coiling axial region 63 (in other words, with) of rotating roller 61.Therefore, gear part 62 and coiling axial region 63 become the state that the wall that consists of with roller section is cut apart that is operated.
In addition, operation is partly exposed from peristome with rotating roller 61, and this part is as operating portion.And, the end 64b of rotating shaft that rotating roller has the other end 64a of the rotating shaft that is arranged at a side (the specifically side of gear part) and is arranged on (the specifically side of wireline reel) of another side.
And, in shell 201, have the force application component 92 of rotating roller 61 to the peristome direction application of force of shell.Specifically, the force application part 92b by force application component 92 comes pair roller 61 application of forces.And, being provided with locking with rib 99 at shell 201, this locking can enter between the jut by the gear part 62 of the rotating roller 61 of the force application part 92b application of force with rib 99.Therefore, rotating roller 61 becomes the state shown in Figure 56 under the state that is biased the parts 92b application of force, and locking engages with the jut of gear part 62 with rib 99, therefore can not rotate.And, if to away from locking with the direction of rib 99 pushing rotating roller 61, then an end 64b of the rotating shaft of rotating roller and other end 64a on being arranged at shell 201 bearing portion 94a and 94b in mobile and can rotate.Therefore, the rotation that the operating portion 200 of the present embodiment limits under the state that does not push rotating roller 61, and have the locking mechanism that the rotation of draught line winding mechanism is carried out dissoluble locking.
And, in the operating portion of the present embodiment, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line by the force application component 92 with above-mentioned force application part 92b and said gear section 62.Force application component 92 has force application part 92b and force application part 92b is fixed in the fixed part 92a of shell 201.And, force application part 92b adopts the leaf-spring-like parts, these leaf-spring-like parts by fixed part 92a from the rear of gear part 62 (opposite with the leading section of operating portion oppositely) extend to the below of gear part, and the front end that extends into these leaf-spring-like parts engages with the jut of the bottom of gear part 62.These leaf-spring-like parts are with the mode butt of the bottom of pressing gear part 62, so roller 61 is subject to as described above to the direction power of the peristome 98 of shell.And, as mentioned above, pushing roller 61, thus roller can rotate.But can be to the rotation of the direction of arrow (direction of coiling draught line) of Figure 56, but when making roller 61 opposite spin, the front end engaging of the jut of gear part 62 and force application part 92b and stop its rotation.Thus, be construed as limiting the draught line winding mechanism to the counter-rotating limiting mechanism of the direction rotation opposite with the coiling direction of draught line.
The external diameter of gear part 62 is less than the external diameter of rotating roller, as the external diameter of gear part 62, and preferred 10～60mm, especially preferred 15～50mm, as the number of teeth, preferred 4～200, especially preferred 4～70.
And in this operating portion 200, shown in Figure 55, force application part 92b enters between the side of the inner surface of shell 201 and rotating roller 61, its front end and gear part 62 butts.Thus, force application part 92b is subject to the restriction of the side of the inner surface of shell 201 and rotating roller 61 in the horizontal movement of (horizontal direction).
And in the axle collar parts 102 that operating portion 200 has, an end is by pin 103 axles supportings, another distolateral collar part 104 take in coiling axial region 63 and and coiling axial region 63 between form annulus.This annulus is not very large space, be than and the outer surface of the line of reeling between the annulus of narrow space.
And, in the body organ expansion instrument 80,120 of the present embodiment, make roller to the direction of arrow rotation of Figure 51, thread like body 71 also is wound onto on the coiling axial region 63, when the thread like body 71 of having reeled can the coiling amount after, just can not carry out the rotary manipulation of roller 61.
In addition, in the body organ expansion instrument 80,120 of the present embodiment, also can be the such mode of body organ expansion instrument 10 of above-described embodiment.Body organ expansion instrument 10 is only different from above-mentioned body organ expansion instrument 1 aspect the mode that does not have intervalve and front end side pipe as mentioned above, and other aspects are identical with above-mentioned body organ expansion instrument 1.
In addition, in the body organ expansion instrument 80 of the present embodiment, also can have many, two draught lines specifically.Body organ expansion instrument 120 such as Figure 52, Figure 39, embodiment shown in Figure 40 has two draught lines.Figure 52 is that the local elliptical of the body organ expansion instrument of other embodiment of the present invention amplifies outside drawing.The L-L line amplification view of Figure 51 is identical with Figure 39.The M-M line amplification view of Figure 52 is identical with Figure 40.
The difference of the body organ expansion instrument 120 of the present embodiment and the body organ expansion instrument 80 of above-described embodiment just is provided with two draught lines and consequent different.Other aspects are identical with above-mentioned body organ expansion instrument 80, to the identical label of parts mark same as described above.Need to prove, two draught lines also can be set in the above-mentioned body organ expansion instrument 80.
Such as Figure 52 and shown in Figure 39, the support in the body organ expansion instrument 120 of the present embodiment is taken in cartridge 5 and is extended to front from cardinal extremity, and has two slit 52a, 52b that are arranged on relative position.And, correspondingly, be provided with two root tubular part 8a, the 8b that is configured in relative position at front end side pipe 2.
And, taking in the base end part of using cartridge 5 at support, two draught line 6a, 6b are fixed on relative position.And such as Figure 52, Figure 39, shown in Figure 40, draught line 6a connects tubular part 8a and in the 4 interior extensions of cardinal extremity side pipe, and enters on the operating portion 90.Similarly, draught line 6b connects tubular part 8b and in the 4 interior extensions of cardinal extremity side pipe, is fixed at base end part on the wireline reel of operating portion 9.Need to prove, in the situation that use two draught line 6a, 6b, two lines also can become one at base end part.And, by two draught lines being set, not agley as the crow flies traction.
In addition, in the body organ expansion instrument of the present embodiment, keep using parts if body organ expansion instrument has the draught line position, this draught line position keeps being positioned at the outer surface of front end side pipe and having with parts can be for the path of draught line perforation, the traction that then draught line can be good.
In addition, in the body organ expansion instrument of the present embodiment, if body organ expansion instrument has the jut of the outer surface side that is positioned at the front end side pipe, and support is taken in cartridge to have from cardinal extremity forward distolateral extension and the slit that can move for jut, and then support is taken in cartridge and can be moved to base end side well.
In addition, in above-mentioned all embodiment, also can pay body (not shown) in cardinal extremity side pipe 4 interior insertion rigidity.Preferred rigidity is paid body and is fixed on the cardinal extremity side pipe at base end part, and rigidity to pay the front end of body outstanding from the front end of cardinal extremity side pipe, and in the front end side pipe, extend.In addition, pay the obstacle that body does not become the body organ expansion instrument bending in order to make rigidity, preferred is fixed on base end part on the cardinal extremity side pipe, and other parts are fixing.Rigidity is paid the flexible reduction that body less makes the cardinal extremity side pipe, but can prevent from crawling endovascular at extreme bending and the cardinal extremity side pipe of the cardinal extremity side pipe of crooked position.Preferred rigidity is paid body and is formed by thread like body.As thread like body, the preferable alloy line, wire diameter is elastic metallic, the superelastic metals etc. such as rustless steel 0.05～1.5mm, that be preferably 0.1～1.0mm, particularly preferably spring high-tension rustless steel, superelastic alloy line.
Like this, in above-mentioned all embodiment, preferred organism organ expansion utensil has rigidity and pays body 11.
Figure 59 is that external view is amplified in the part of the body organ expansion instrument of other embodiment of the present invention.Figure 60 is near the amplification view of leading section of the body organ expansion instrument shown in Figure 59.Figure 61 is the amplification view along the Q-Q line of Figure 59.
To shown in Figure 22, the basic structure of the body organ expansion instrument 150 of the present embodiment is identical in fact with above-mentioned body organ expansion instrument 40 such as Figure 19.
In the body organ expansion instrument 150 of the present embodiment, except above-mentioned draught line (traction element), rigidity is set separately pays body 11.Shown in Figure 59 and Figure 60, rigidity is paid body 11 and is extended from the base end side of body organ expansion instrument 150, and connects cardinal extremity side pipe 4, and then enters support and take in and use cartridge 5b.And shown in Figure 59 and Figure 60, the front end 11a that rigidity is paid body 11 is fixed on the front end side pipe 2.Especially, the preferred rigidity front end of paying body 11 is fixed on than intervalve 47 forward more distolateral positions.In addition, preferred rigidity is paid body 11 and is fixed on the base end part or operating portion of cardinal extremity side pipe 4 at base end part.By being set, such rigidity pays body 11, the distortion of body organ expansion instrument in the time of can being suppressed at traction element (draught line) traction.
Pay body 11 as rigidity, the parts that can use wire rod or be twisted by many wire rods.In addition, the thickness of rigidity being paid body 11 is not particularly limited, usually preferred 0.01～1.5mm, more preferably 0.1～1.0mm.
In addition, pay the formation material of body 11 as rigidity, can enumerate stainless steel wire (preferred spring high-tension rustless steel), piano wire (preferably having implemented the piano wire of nickel plating or chromium plating), the superelastic alloy line, the wire rod that is formed by various metals such as Ni-Ti alloy, Cu-Zu alloy, Ni-Al alloy, tungsten, tungsten alloy, titanium, titanium alloy, cobalt alloy, tantalums.In addition, rigidity is paid body 11 preferably than traction element (draught line) firmly.
And, in the body organ expansion instrument 150 shown in Figure 59 to Figure 61, has intervalve 47, the leading section of this intervalve 47 enters support and takes in the base end side of using cartridge 5b, and fixes at the base end part of base end part and front end side pipe 2 and the leading section of cardinal extremity side pipe 4.And intervalve 47 can be taken in the mode that moves to base end side with cartridge 5 with limit bracket not and enter support and take in in the cartridge 5b.The end of traction element 6a, 6b connects intervalve 47 and enters support and takes in in the cartridge 5b, is fixed on support and takes in the central part of using cartridge 5b.Traction element 6a, 6b connect between intervalve 47 and the front end side pipe 2, and to the 4 interior extensions of cardinal extremity side pipe.In addition, between support is taken in cartridge 5b and front end side pipe 2, be inserted with the space and form pipe 49.Space formation pipe 49 is not fixed on front end side pipe 2 and support is taken in on the cartridge 5.
In addition, rigidity is paid body 22 and is passed in the cardinal extremity side pipe 4, and enters in the intervalve 47, and takes in rearward end with cartridge 5b from support and enter support and take in the space between cartridge 5b and the front end side pipe 2, and further forward distolateral extension.
In addition, in the body organ expansion instrument 150 of the present embodiment, with the body organ expansion instrument 20,40,70 of above-described embodiment, 120 identical, have two draught lines.Structure with two draught lines is identical with the body organ expansion instrument 40 of above-described embodiment.
And, taking in the central part of using cartridge 5b at support, two traction element 6a, 6b are fixed on relative position.And draught line 6a connects intervalve 47 and in the 4 interior extensions of cardinal extremity side pipe, and is fixed at base end part on the wireline reel of operating portion 90.Similarly, draught line 6b connects intervalve 47 and in the 4 interior extensions of cardinal extremity side pipe, and is fixed at base end part on the wireline reel of operating portion 90.Need to prove, in the situation that adopt two draught line 6a, 6b, two lines can form as one at base end part.And shown in Figure 61, two draught line 6a, 6b take at support and use in the cartridge 5b with the predetermined distance arranged spaced.And shown in Figure 61, rigidity is paid body 11 and be configured in respectively position with two draught line 6a, the roughly the same distance in 6b interval in support is taken in cartridge 5b.
In addition, among above-mentioned all embodiment, operating portion can be the parts shown in Figure 62 to Figure 64.
Figure 62 is near the enlarged front view of operating portion of the body organ expansion instrument of other embodiment of the present invention.Figure 63 is the in-built key diagram for the operating portion of the body organ expansion instrument shown in explanation Figure 62.Figure 64 is the in-built key diagram for the operating portion of the body organ expansion instrument shown in explanation Figure 62.Figure 63 pulls down the 1st operating portion shell and the figure of adapter part is shown with section from the operating portion of the body organ expansion instrument shown in Figure 62.
The basic structure of the operating portion 250 of the present embodiment is identical with aforesaid operations section 200.Difference just operates with the structure of the counter-rotating limiting mechanism 260 of rotating roller 61 and the structure of adapter section, about other aspects, with reference to the explanation of aforesaid operations section 200.
Shown in Figure 62 to Figure 64, operating portion 250 has operating portion shell 251.Operating portion shell 251 is that base end side and central part are crooked and with the shape of fillet, thereby is easy to control and easy operation roller under gripping state.In addition, operating portion shell 251 is made of the 1st operating portion shell 251a and the 2nd operating portion shell 251b.
And, be fixed with the leading section of tubular adapter 255 at the cardinal extremity of cardinal extremity side pipe 4.In addition, in operating portion shell 251, take in the sealing mechanism that is connected with the base end part of adapter 255.Sealing mechanism comprises: have the sealing mechanism cylindrical body parts 270 at the fixing leading section of the rearward end of adapter 255; Be fixed on the cap member 271 of the cardinal extremity of cylindrical body parts 270; Be configured in the seal member 272 between cylindrical body parts 270 and the cap member 271; The rigidity that is accommodated in the cylindrical body parts is paid body component for fixing 273.Main element 270 and cap member 271 have the peristome of perforation.Seal member 272 has makes draught line 6 (6a, 6b) with liquid-tight state and the hole section or the slit that connect of mode slidably.In addition, pay body component for fixing 273 in rigidity and be fixed with the base end part that rigidity is paid body 11.And rigidity is paid body component for fixing 273 and is fixed in the cylindrical body parts 270.The constituent material of adapter is same as described above.The constituent material of seal member can use elastomeric material.Elastomeric material is same as described above.
Shell 251 has: the peristome 98 that operation is partly given prominence to rotating roller 61; The bearing portion 94a that the other end 64a of the rotating shaft of pair roller 61 takes in; The bearing portion 94b that one end 64b of the rotating shaft of pair roller 61 takes in.And, although not shown, have in the same manner the locking rib with aforesaid operations section 200.In addition, bearing portion 94a, 94b and aforesaid operations section 200 have the Pear-Shaped that extends with the direction of rib away from above-mentioned locking in the same manner.
Counter-rotating limiting mechanism to the operating portion 250 of the present embodiment describes.
Shown in Figure 62 to Figure 64, operation has gear part 62 coaxial and the one rotation with rotating roller 61.And shown in Figure 64, gear part 62 is arranged on rotating roller 61 and the face face opposition side that is provided with coiling axial region 63.Therefore, gear part 62 and coiling axial region 63 become the state that the wall that consists of with roller section is cut apart that is operated.
Shown in Figure 62 to Figure 63, taken in counter-rotating limiting part 261 in the operating portion 250.Counter-rotating limiting part 261 has: be arranged on the aforesaid operations of leading section with the relative part of the gear part 62 of rotating roller 61 and can with the engaging piece 264 of gear part engagement; Elastically deformable section 262; Installation portion 263 to the shell installation.In addition, shell 251b has the 1st protuberance 252 and the 2nd protuberance 253 that is formed on inner surface.The 1st protuberance 252 enters in the elastically deformable section 262 of counter-rotating limiting part 261, and has the external surface shape corresponding with the inner surface configuration of elastically deformable section 262.Specifically, the inner surface configuration of elastically deformable section 262 is circular-arc, and the 1st protuberance 252 is circular-arc corresponding cylindric with this.And the installation portion 263 of counter-rotating limiting part 261 has can be installed in the 1st protuberance 252 that is formed on the shell 251b and the shape between the 2nd protuberance 253.And, the incorporating section 263 of counter-rotating limiting part 261 because be installed in the 1st protuberance 252 of shell 251b and the 2nd protuberance 253 between and install in the mode that can not rotate, and the elastic force that passes through elastically deformable section 262 is used rotating roller 61 application of forces to the direction of peristome 98 to operating. in addition, the installation portion 263 of counter-rotating limiting part 261 is limited to move to side surface direction by the discoid protuberance 103c that is located at axle collar parts 102.
And as mentioned above, by pushing roller 61, roller can rotate.But, although can be to the rotation of the direction of arrow (direction of coiling draught line) of Figure 63, in the time of making roller 61 to opposite spin, then engaging piece 264 engagings of gear part 62 tooth section and counter-rotating limiting part 261 and stop its rotation.Thus, restrict rollers is to the direction rotation opposite with the draught line coiling direction of draught line winding mechanism.In addition, in this operating portion 250, shown in Figure 64, counter-rotating limiting part 261 is configured between the side of the inner surface of shell 251b and rotating roller 61.Therefore, counter-rotating limiting part 261 is limited by the side of the inner surface of shell 251b and rotating roller 61 in the movement of horizontal (horizontal direction).
In addition, as the draught line winding mechanism, be not limited to said structure, as long as can winding line.In addition, as the locking mechanism of the locking of the rotation of draught line winding mechanism being carried out can contact, as long as can be able to lock contiguously the rotation of draught line winding mechanism, which type of structure can, be not limited to said structure.As the counter-rotating limiting mechanism of restriction draught line winding mechanism to the opposite direction rotation of the coiling direction of draught line, as long as can stop to opposite spin, which type of structure can, be not limited to said structure.
Industrial applicibility
According to organism expansion utensil of the present invention, in the body organ expansion instrument that adopts Self-expanded stent, the base end side opening is not the cardinal extremity of utensil, but be positioned at the base end side of front end side pipe, therefore, when keeping somewhere the support operation, can easily be replaced by the operation of other biological body organ expansion utensil, and, owing to comparing with the external diameter than the maximum gauge part of the forward one end side portion of above-mentioned cardinal extremity side pipe of above-mentioned body organ expansion instrument, the external diameter of cardinal extremity side pipe is little, even so make the seal wire that extends from the base end side opening to base end side under the state of the side extension of cardinal extremity side pipe, also can equate with the external diameter than the forward distolateral maximum gauge part of the cardinal extremity side pipe of body organ expansion instrument, thereby can be inserted in the thin blood vessel.

Claims (25)

1. a body organ expansion instrument comprises: the front end side pipe with guidewire lumen; Leading section is fixed on the cardinal extremity side pipe of the base end part of above-mentioned front end side pipe; Surrounding the front of above-mentioned front end side pipe and support that proximal direction that can the forward end side pipe slides takes in and uses cartridge; Being accommodated in above-mentioned support takes in the support in the cartridge; And one the end be fixed on above-mentioned support and take in on the cartridge and the draught line that in above-mentioned cardinal extremity side pipe, extends, draw above-mentioned draught line by the base end side to above-mentioned base end side pipe, above-mentioned support is taken in cartridge moved to base end side, it is characterized in that
Above-mentioned front end side pipe comprises: at the base end side opening of above-mentioned front end side pipe and the base end side opening that is communicated with above-mentioned guidewire lumen; Be positioned at the front of above-mentioned front end side pipe and take in cardinal extremity butt with the above-mentioned support of cartridge with being accommodated in above-mentioned support, to limit above-mentioned support to the bracket clamp bonding part of the movement of base end side;
Above-mentioned support forms the general cylindrical shape shape, and is accommodated in above-mentioned support with the state that is compressed to central axis direction and takes in in the cartridge, and above-mentioned support is expanded laterally when keeping somewhere in organism and returned to shape before the compression;
And, having operating portion at the base end part of above-mentioned cardinal extremity side pipe, aforesaid operations section has be used to the above-mentioned draught line of reeling so that above-mentioned support is taken in the draught line winding mechanism that moves to base end side with cartridge.
2. body organ expansion instrument as claimed in claim 1 is characterized in that,
Aforesaid operations section has the operating portion shell; Above-mentioned draught line winding mechanism has operation and uses rotating roller, and aforesaid operations has the part of exposing from aforesaid operations section shell with rotating roller; By making above-mentioned rotating roller rotation above-mentioned draught line is wound to base end side.
3. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Aforesaid operations section has locking mechanism, and above-mentioned locking mechanism locks the rotation of above-mentioned draught line winding mechanism, and this locking can be removed.
4. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Aforesaid operations section has the counter-rotating limiting mechanism, and above-mentioned counter-rotating limiting mechanism limits above-mentioned draught line winding mechanism to the direction rotation opposite with the coiling direction of above-mentioned draught line.
5. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned draught line winding mechanism have operation with rotating roller and with aforesaid operations with rotating roller coaxial and arrange integratedly and external diameter than aforesaid operations with the little coiling axial region of rotating roller section, be fixed with the base end part of above-mentioned draught line at above-mentioned coiling axial region.
6. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Aforesaid operations section has the adapter that is connected with the base end part of above-mentioned cardinal extremity side pipe, and above-mentioned adapter has the seal member that above-mentioned draught line is connected in liquid-tight mode.
7. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has draught line position holding member, and above-mentioned draught line position holding member is positioned at the outer surface side of above-mentioned front end side pipe, and has the path that can supply above-mentioned draught line to connect.
8. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has the jut of the outer surface side that is positioned at above-mentioned front end side pipe, and above-mentioned support is taken in cartridge to have from cardinal extremity forward distolateral extension and the slit that can move for above-mentioned jut.
9. body organ expansion instrument as claimed in claim 8 is characterized in that,
Above-mentioned jut is made of tubular part or endless member.
10. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has displacement restriction section, and above-mentioned displacement restriction section limits above-mentioned support and takes in the displacement of cartridge to base end side.
11. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned draught line winding mechanism has coiling axial region and collar part, above-mentioned collar part surround above-mentioned coiling axial region and and the outer surface of above-mentioned coiling axial region between form annulus, suppress to be wound on the loosening of draught line on the above-mentioned coiling axial region.
12. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has intervalve, above-mentioned intervalve surrounds base end side and the above-mentioned support of above-mentioned front end side pipe and takes in the base end side of using cartridge, and fixes at the base end part of base end part and above-mentioned front end side pipe and the leading section of above-mentioned cardinal extremity side pipe; Above-mentioned intervalve does not limit above-mentioned support and takes in the movement of cartridge to base end side when surrounding, an above-mentioned end of above-mentioned draught line is taken in cartridge with above-mentioned support in above-mentioned intervalve and is fixed, and above-mentioned draught line passes between above-mentioned intervalve and the above-mentioned front end side pipe and extends in above-mentioned base end side pipe.
13. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned front pipe has can be for the draught line path of above-mentioned draught line perforation.
14. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned front pipe has the support configuration minor diameter part of the front of being formed on;
Above-mentioned bracket clamp bonding part is made of the cardinal extremity of above-mentioned support configuration with minor diameter part.
15. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned draught line is provided with two.
16. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Aforesaid operations section has the coil of wire around the amount limiting mechanism, and the above-mentioned coil of wire is around the line length of amount limiting mechanism restriction by above-mentioned draught line winding mechanism traction.
17. body organ expansion instrument as claimed in claim 16 is characterized in that,
The above-mentioned coil of wire consists of around the thread like body of the specific length that the amount limiting mechanism is controlled by aforesaid operations section by an end, the other end of above-mentioned thread like body has and is fixed on aforesaid operations with the above-mentioned coiling axial region of rotating roller or is fixed on thread like body on the thread like body coiling axial region that arranges separately beyond the above-mentioned coiling axial region, by aforesaid operations with rotating roller to the coil of wire around direction rotation, after above-mentioned thread like body is winding to above-mentioned coiling axial region or above-mentioned thread like body coiling axial region with ormal weight, can not continue to reel.
18. body organ expansion instrument as claimed in claim 17 is characterized in that,
The above-mentioned coil of wire has the thread like body bobbin around the amount limiting mechanism, and above-mentioned thread like body bobbin is controlled an end of above-mentioned thread like body and the above-mentioned thread like body of reeling, and above-mentioned thread like body bobbin rotatably is accommodated in the above-mentioned incorporating section.
19. body organ expansion instrument as claimed in claim 16 is characterized in that,
The above-mentioned coil of wire is made of protuberance and fastening section around the amount limiting mechanism, above-mentioned protuberance is arranged on aforesaid operations with on the rotating roller, above-mentioned fastening section is arranged in the aforesaid operations section, and aforesaid operations with rotating roller to the coil of wire around direction rotation behind the ormal weight with aforesaid operations rotating roller butt, continue to rotate with rotating roller with the restriction aforesaid operations.
20. body organ expansion instrument as claimed in claim 19 is characterized in that,
The above-mentioned protuberance of the above-mentioned coil of wire in the amount limiting mechanism can be adjusted with the allocation position on the rotating roller at aforesaid operations, thereby can adjust the rotatable amount that aforesaid operations is used rotating roller.
21. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Compare with the external diameter than the maximum gauge part of the forward one end side portion of above-mentioned cardinal extremity side pipe of above-mentioned body organ expansion instrument, the external diameter of above-mentioned cardinal extremity side pipe is little.
22. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has that to connect above-mentioned cardinal extremity side pipe inner and enter above-mentioned support and take in the interior rigidity of cartridge and pay body, the leading section that above-mentioned rigidity is paid body is fixed on the outer surface of above-mentioned front end side pipe, and the above-mentioned rigidity base end part of paying body is fixed on base end part or the aforesaid operations section of above-mentioned cardinal extremity side pipe.
23. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
The external diameter of above-mentioned cardinal extremity side pipe is less than the external diameter of the fixed position of above-mentioned front end side pipe and above-mentioned cardinal extremity side pipe.
24. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
The external diameter of above-mentioned cardinal extremity side pipe is taken in the external diameter of tubular little than above-mentioned support.
25. body organ expansion instrument as claimed in claim 1 or 2 is characterized in that,
Above-mentioned body organ expansion instrument has that to connect above-mentioned cardinal extremity side pipe inner and enter above-mentioned support and take in the interior rigidity of cartridge and pay body, the leading section that above-mentioned rigidity is paid body is fixed on the outer surface of above-mentioned front end side pipe, and the above-mentioned rigidity base end part of paying body is fixed on base end part or the aforesaid operations section of above-mentioned cardinal extremity side pipe.
CN2006800100361A 2005-03-28 2006-03-28 Body organ expansion instrument Active CN101151003B (en)

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JP2005093254A JP4804780B2 (en) 2005-03-28 2005-03-28 Biological organ dilator
JP093254/2005 2005-03-28
JP2005094725 2005-03-29
JP094725/2005 2005-03-29
JP2005287689A JP4928764B2 (en) 2005-09-30 2005-09-30 Biological organ dilator
JP287689/2005 2005-09-30
PCT/JP2006/306286 WO2006104143A1 (en) 2005-03-28 2006-03-28 Body organ expansion instrument

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