CN100471460C - Ultrasonic endoscope - Google Patents
Ultrasonic endoscope Download PDFInfo
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- CN100471460C CN100471460C CNB2005100881359A CN200510088135A CN100471460C CN 100471460 C CN100471460 C CN 100471460C CN B2005100881359 A CNB2005100881359 A CN B2005100881359A CN 200510088135 A CN200510088135 A CN 200510088135A CN 100471460 C CN100471460 C CN 100471460C
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Abstract
The invention provides an ultrasonic endoscope which is provided with an endoscope observation component on a rigid part at the top of an insert part. The endoscope observation component is at least provided with an illuminating part and an observation part at the top and is provided with an electronic scanning ultrasonic observation component at the periphery of a mounting part. the ultrasonic endoscope is characterized in that in the ultrasonic observation component configuration, a plurality of ultrasonic vibrators are arranged in a cylinder-shaped or an arc-shaped ultrasonic vibrator array and a cylinder-shaped cushion is formed at the inner side; a plurality of terminals at one side connected with poles of the ultrasonic vibrators, terminals at the other side connected with cables respectively and a flexible substrates forming a wiring pattern between the terminals at one side and the terminals at the other side are arranged between the ultrasonic vibrators array and the cushion; the flexible substrate has a step-shaped structure which forms a big diameter part of the terminals at one side at the exterior side and a small diameter part of the terminals at the other side at the exterior side, and the inner side of the small diameter part is provided with a ring-shaped supporting part.
Description
Technical field
The present invention relates to a kind of ultrasonic endoscope, its place ahead that is arranged on this top hard portion in the hard portion of the top of insertion section has the endoscopic observation parts of field of view and has ultrasound wave observation parts with the electron scanning formula of the circle-shaped or circular-arc ultrasonic scanning face of the orthogonal axe of this top hard portion.
Background technology
Ultrasonic endoscope be equipped with the top of insertion section hard portion observe body cavity inside the endoscopic observation parts, comprise and for example insert logical pliers and other treatment instruments of disposing apparatuses and insert the mechanism of endoscope and the ultrasound wave observation parts of miscellaneous parts such as logical portion and constitute, and, as the scanning form based on these ultrasound wave observation parts, widely used all the time is the device of a plurality of ultrasonic oscillators being arranged and driven successively the so-called electron scanning formula of these ultrasonic oscillators on prescribed direction.Then, for example, open as described in 2001-No. 314403 communiques as the spy, field of view as the endoscopic observation parts, make the place ahead of the top hard portion of insertion section direct-view endoscope as the visual field, in addition, form ultrasonic scanning face diametrically, promptly circle-shaped or predetermined angular scope circular-arc based on ultrasound wave observation parts.
This spy opens the ultrasonic endoscope in the communique 2001-No. 314403, for example be inserted in the coelomic ducts such as lower digestive tract such as top digestive tract such as esophagus, duodenum or large intestine, observe the place ahead of direction of insertion with the endoscopic observation parts, consequently detecting diseased region etc. when being concerned about the zone, make ultrasound wave observation parts be positioned at the opposite in this care zone, can obtain the information relevant with the in-vivo tissue at this position.
Yet, in the ultrasonic endoscope of the above-mentioned type,, reach dozens of and even more than this according to the point of resolution as the number of the ultrasonic oscillator that constitutes the ultrasonic oscillator array.And though the electrode of these each ultrasonic oscillators is distinguished connection cord, the connection of this cable constitutes in the mode of being undertaken by the flexible base, board that is made of resin film usually.And, in above-mentioned spy opens 2001-No. 314403 communiques, flexible base, board is divided into multi-disc, make these each flexible base, boards extend to the half-way of insertion section, and be connected with cable and constitute.At this, the insertion section has in the top hard portion that endoscopic observation parts and ultrasound wave observation parts have been installed and links the structure of angle (angle) portion and bending section in turn, above-mentioned flexible base, board and the connection between the cable by the bight as the position that enters bending section.And the base end side end of the flexible base, board that this cable connected is a free state.
Under the situation of aforesaid formation, when ultrasound wave being observed parts pack (incorporation) insertion section into, make flexible base, board in advance with state that cable is connected under, insert and lead in the insertion section, but it is logical in the mode that the base end side from the insertion section draws in the base end part of cable to be inserted, up to the top of ultrasonic oscillator array configurations in the insertion section.And, in order to ensure the stability of cable connection to flexible base, board, sometimes need flexible base, board to have to a certain degree viscosity (rigidity), therefore in the marginal portion of flexible base, board when the insertion section interpolation is logical, its marginal portion is tangled by other parts and is inserted logical, insert logical operability variation, and when with the mode actuating cable that is pulled excessively by force, then cable might produce broken string.
In addition, because in the insertion section, pack into into ultrasound wave observation parts and endoscopic observation parts, so the inside of insertion section has high fill-ratio.And, the bight is by bending operation and by sharply crooked, therefore the end becomes free state, and the flexible base, board with viscosity is forced to bending when the bending of bight, the photoconduction (lightguide) that its end is pressed in other members, for example constitute the endoscopic observation parts is gone up by the edge might make the photoconduction that is formed by superfine fiber optics or the cable that is connected on the solid-state imager breaks, and also can produce can make treatment instrument insert siphunculus or the flow pipe of supplying gas is vertically bent problem points such as in the wrong or damage.
In a word, when difference connection cord on a plurality of ultrasonic oscillators, when using flexible base, board, if make the part of this flexible base, board become free state, then not only when the packing into of insertion section, and when the start of carrying out as ultrasonic endoscope, this becomes the edge part of flexible base, board of free state or corner portion etc. and forms with other members and disturb, and might oppress these miscellaneous parts or make its damage.
The invention that the present invention finishes in view of above problem points just, its purpose be, guarantees the stationarity and the stability of the cable that is connected with the ultrasonic oscillator array, and ultrasound wave observation parts were carried out easily to packing into of insertion section.
In addition, the ultrasonic oscillator array is made of the unit of general cylindrical shape shape as a whole, sets bed course (backing layer) in the inboard of ultrasonic oscillator, and acoustic lens is installed in the outside in addition.Acoustic lens is the lens that the ultrasonic beam of sending from ultrasonic oscillator is focused on, and by this acoustic lens is set, improves the wave beam with the vertical direction of transmission face of ultrasonic beam.The ultrasonic oscillator array is integrated with each above-mentioned member etc., be encased in the top hard portion of insertion section, each member of formation endoscopic observation parts etc. is inserted logical inside with ultrasonic oscillator array of drum as mentioned above, specifically inserts logical being formed in the passage shape path of bed course inside.
Here, the insertion section of ultrasonic endoscope is inserted in those who are investigated's body and carries out various inspections or treatment etc., therefore needs its diameter thin as far as possible.If improve the inspection precision of observing parts based on ultrasound wave, need and its output be increased with the ultrasonic oscillator maximization.For this reason, not only the thickness of ultrasonic oscillator increases, and the thickness of bed course also must increase.Mechanism of endoscope inserts leads at the inner passage shape path that forms of bed course.
As mechanism of endoscope, be the mechanism that optical profile type is observed body cavity inside, so Min. need possess Lighting Division and observation portion.In addition, except them, also need to be provided with other members such as washing fluid supply pipe that treatment instrument is for example inserted circulation passage or watch window sometimes.Especially, observation portion will dispose object lens and solid-state imager at least, and can also dispose various filters as required or be used for prism of crooked light path etc.And treatment instrument is inserted circulation passage and is used for inserting logical pliers and other treatment instruments, and in order to insert logical large-scale treatment instrument, treatment instrument is inserted circulation passage and preferably is made of thick pipe.
As mentioned above, in ultrasonic endoscope,, then there is the problem of the corresponding chap of insertion section diameter thus if improve in ultrasound wave observation parts or the mechanism of endoscope the function of any one.Especially because the internal diameter of bed course has great influence to the installation of mechanism of endoscope, therefore the objective of the invention is to, widen by the cross section of the passage shape path that will form by bed course, thereby the installing space that can guarantee mechanism of endoscope is broader as far as possible.
Summary of the invention
In order to achieve the above object, the present invention is installed in the endoscope's observation parts that possess Lighting Division and observation portion on its top end face at least in the top of insertion section hard portion, and the ultrasonic endoscope of the ultrasound wave observation parts of electron scanning formula is installed on the peripheral part of the installation portion of these endoscopic observation parts, it is characterized in that, described ultrasound wave observation parts, the ultrasonic oscillator array that a plurality of ultrasonic oscillators is arranged as cylindrical shape or circular shape is set, the face side is provided with the bed course that forms drum within it, between described each ultrasonic oscillator array and described bed course, set flexible base, board, wherein, described flexible base, board forms a plurality of-square side terminal that is connected with each electrode of described each ultrasonic oscillator, the opposing party's side terminal of difference connection cord, and the Wiring pattern that between these two terminals, forms, described flexible base, board becomes and has large-diameter portion that forms described side's side terminal and the step structure (stepped structure) that forms the minor diameter of described the opposing party's side terminal, in the inner face side of this minor diameter circular support portion is set.
Be electrically connected by flexible base, board between a plurality of ultrasonic oscillators of formation ultrasonic oscillator array and each cable, but this flexible base, board is installed on the supporting member.Thus, by flexible base, board is installed on the supporting member, fixing whole this flexible base, board makes edge and corner portion not outstanding.But, when connecting portion between flexible base, board and the ultrasonic oscillator directly being extended as the crow flies and is connected with cable, the outside dimension increase of the connecting portion of this cable.Therefore, make flexible base, board become step structure, its large-diameter portion becomes the connecting portion that links to each other with ultrasound wave a period of time, and minor diameter is connected with cable, and the diameter that can suppress the connecting portion between flexible base, board and the cable thus becomes big.
Inner face side at ultrasonic oscillator is provided with bed course, but preferably the gauge of this bed course is thick as much as possible.The supporting member of the minor diameter of supporting flexible substrate can be made of member independently, but also can make bed course self bring into play function as supporting member.In this case, formation as bed course, be only to stretch out specific length towards the base end side of top hard portion, and the diameter of the outer peripheral face by dwindling this extension become step structure from end than described ultrasonic oscillator array, and will be based on this stagewise reducing diameter part as the support portion.
If constitute flexible base, board as described above, flexible base, board becomes step structure, is therefore forming zigzag part (folded section) to the portion of dividing a word with a hyphen at the end of a line of stepped portion with from stepped portion to the portion of dividing a word with a hyphen at the end of a line two of minor diameter from its large-diameter portion.Also flexible base, board can be pre-formed to being with stagewise drum, so, be difficult to be formed on portion of terminal or the distribution that forms on this flexible base, board by printing unit.Therefore, constituting flexible base, board by the flat resin film of a slice is favourable carry out pattern by printing aspect forming.
Forming under the situation of flexible base, board with flat resin film, need bending at two places, this bending angle is generally 90 °.Because large-diameter portion integral body of flexible base, board be drum, though therefore constitute by continuous portion, from till the end of minor diameter of dividing a word with a hyphen at the end of a line partly of stepped portion, must be at least with the intervals formation otch of every regulation.But if only form cutting, then flexible base, board can be partly stacked at the position of minor diameter.Therefore, on flexible base, board, be partitioned into a plurality of band shapes so that have the length of the circumferencial direction of minor diameter.At this, zonal cutting part forms at interval every certain spacing, from continuous portion to till the position of the portion of dividing a word with a hyphen at the end of a line of end difference, extending, but the width dimensions of each cutting part also can be even, also can become as required in addition from tip side to the shape of expanding till the position of the portion of dividing a word with a hyphen at the end of a line of minor diameter.
In other words, described flexible base, board, long portion (long section) by the roughly total length of the circumferencial direction that covers described large-diameter portion, constitute with a plurality of banded cutting part that has with the roughly consistent length of the length of the circumferencial direction of minor diameter, this cutting part also can have from beginning length till the end of described support portion from described long portion to the portion of dividing a word with a hyphen at the end of a line of described stepped portion.
On above-mentioned cutting part, have two places to form bending, but this is bent into the right angle, need becomes integral body or local wrinkle or concavo-convex etc. the rapid bending shape of not producing.When bending part when bed course partly floats, can produce following unfavorable condition: flexible base, board not only reduces the constant intensity of bed course, and bad connection to ultrasonic oscillator appears, over-drastic in addition external force acts on ultrasonic oscillator and produces unfavorable condition such as damage.Therefore, cutting part about flexible base, board, if, then can become rapid case of bending for example in the portion of dividing a word with a hyphen at the end of a line of minor diameter, forming the formation of a plurality of micro hole or otch etc. to the portion of dividing a word with a hyphen at the end of a line of end difference with from end difference in mode along broken line from large-diameter portion.
By adopting above formation, on the flexible base, board that is fixed on the supporting member, attached cable, therefore can easily carry out the attended operation of this cable, and can firmly fix, also can guarantee stability, can be smoothly and easily carry out ultrasound wave is observed pack into the operation of insertion section of parts, when operation, do not oppress other members, perhaps do not make effects such as damage.
With the inboard of described bed course as passage shape path, insert in the inside of described passage shape path logical have described endoscopic observation parts and comprise treatment instrument insert the thorough cut road miscellaneous part mechanism of endoscope and be provided with, inboard at described bed course, at the area of space that setting of mechanism of described endoscope produces in the portion, can seal the acoustic impedance packing material identical or close with this bed course.
In addition, described packing material is made of the material with the identical material of described bed course, in described observation portion solid-state imager is set, and at least a portion of this solid-state imager is embedded in the inside of described packing material.
Thus,, therefore can make the thickness attenuation of the bed course that constitutes ultrasound wave observation parts itself, therefore, effects such as the installing space change of mechanism of endoscope is big can occur making because packing material brings into play in fact and the bed course identical functions.
Description of drawings
Fig. 1 is the whole pie graph of the ultrasonic endoscope of expression one embodiment of the present invention.
Fig. 2 is the outside drawing of the head portion of insertion section.
Fig. 3 is the figure of the top end face of expression top hard portion.
Fig. 4 is the longitudinal sectional view of the head portion of insertion section.
Fig. 5 is A-A cutaway view of Fig. 4.
Fig. 6 is B-B cutaway view of Fig. 4.
Fig. 7 is C-C cutaway view of Fig. 4.
Fig. 8 is D-D cutaway view of Fig. 4.
Fig. 9 is the stereoscopic figure of bridge formation member.
Figure 10 is the major part expanded view of flexible base, board.
Figure 11 is the amplification view of the linking portion between expression ultrasonic oscillator and bed course and the flexible base, board.
Figure 12 is the sketch map of operation that expression is used for being formed by flat resin film the flexible base, board of ladder barrel shape.
Figure 13 is the enlarged front view of the formation of its bending of expression in the cutting part of resin film.
Figure 14 is a longitudinal sectional view of representing head portion from the bight of insertion section.
Figure 15 is A '-A ' cutaway view of Figure 14.
Figure 16 is B '-B ' cutaway view of Figure 14.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described in detail.At first, as shown in Figure 1, ultrasonic endoscope roughly is made of main body operating unit 1, insertion section 2 and general lead 3.And, in this ultrasonic endoscope, connect light supply apparatus, image signal processor and ultrasound observation apparatus, and constitute system as a whole.And, general lead 3 is drawn from main body operating unit 1, and branch is carried out on the way therein, possess with the mode that can load and unload be connected adapter 3a on the light supply apparatus, the adapter 3b that is connected with image signal processor in the mode that can load and unload and the adapter 3c that is connected with ultrasound observation apparatus in the mode that can load and unload.
Main body operating unit 1 can be waited by the patient and use-a hands gripping, and is provided with angle functional unit 4 and treatment instrument introduction part 5, action buttons such as the water button 6 of supplying gas, attraction button 7 is installed in addition, and possesses various Switch 8.
Fig. 2 represents the section of the head portion of insertion section 2, and Fig. 3 represents the formation of the top end face of the 2c of top hard portion in the insertion section 2 in addition.Can be clear and definite from these figure, on the top hard 2c of portion, be provided with: endoscopic observation parts, its extended line direction with the axis of the top hard 2c of portion be the place ahead of the 2c of top hard portion as the visual field, and visual angle V with regulation; The ultrasound wave of electronics radial scan formula observation parts, it has circular or circular-arc ultrasonic scanning face W on the position of the base end side in the visual field of these endoscopic observation parts certainly.
Fig. 4 represents the section of the head portion of insertion section 2.Can be well understood to from this figure and Fig. 3, the endoscopic observation parts are made of Lighting Division 10 and observation portion 11, and Lighting Division 10 is provided in observation portion 11 is carried out on the position of both sides of clamping.Lighting Division 10 has towards the lighting lens 10a of the top end face of the top hard 2c of portion and photoconduction 10b (with reference to Fig. 5's～Fig. 8) constitute.Photoconduction 10b is made of many superfine fibre-optic bundles, and till extending to the 2c of top hard portion of insertion section 2 from the adapter 3a of general lead 3, its illumination light ejecting end towards with the position on lighting lens 10a opposite.On the other hand, observation portion 11 constitutes by object lens 11a with to the prism 11b that carries out 90 ° of bendings from the light path of these object lens 11a, and object lens 11a is located in the lens barrel 12, and prism 11b is fixed on the lens barrel 12 and is provided with.And engaging on prism 11b has solid-state imager 13, is connected with the holding wire of defined amount on the substrate 13a of solid-state imager 13.These holding wires are bundled into a signal of video signal cable 14, and extend to till the adapter 3b of general lead 3.
On the top end face of the 2c of the top of insertion section 2 hard portion, also further be provided with the treatment instrument derivation opening 15 that is used to derive pliers and other treatment instruments, on this treatment instrument is derived with opening 15, connection tube 16 is installed, this connection tube 16 with link to each other from the slotting siphunculus of the treatment instrument that is arranged on the treatment instrument introduction part 5 on the main body operating unit 1.In addition, treatment instrument is inserted siphunculus to constitute in the inside of main body operating unit 1 and the mode that attracts path to collaborate.In addition, on the top hard 2c of portion nozzle 17 is installed, this nozzle 17 cleans when being used for top end face as the object lens 11a in observation portion 11 by pollutions such as body fluid.In addition, on this nozzle 17, be connected with washing fluid supply pipe 9 (with reference to Fig. 5～Fig. 8) by water button 6 operation of supplying gas.Therefore, they also bring into play function with the endoscopic observation parts as the mechanism of endoscope that constitutes endoscope.
The endoscopic observation parts are by constituting with upper type, but the head portion that constitutes each member of these endoscopic observation parts is remained on endoscope's installation component 18 regularly.Endoscope's installation component 18 is made of stainless steel and other metal materials, and this metal material is formed with and a plurality ofly is used to make each member that constitutes described endoscopic observation parts to insert logical through holes, and chimeric on this endoscope's installation component 18 have a top end cap 19.By this top end cap 19, make the endoscope's installation component 18 that constitutes by metal material not be exposed to the outside, constitute the top piece by these endoscope's installation components 18 and top end cap 19.And, as shown in Figure 5, in top end cap 19, form the two screw 19a of place towards its thickness direction, in these screws 19a, screw togather and insert limit screw 20, the top of this limit screw 20 is crimped on endoscope's installation component 18, make the interface of endoscope's installation component 18 and top end cap 19 bonding simultaneously, thereby make the top piece that constitutes by endoscope's installation component 18 and top end cap 19 integrated.
The base end side position of the top end cap 19 in the top hard 2c of portion is equipped with the ultrasound wave observation parts with radial scanning plane.Can be clear and definite from Fig. 6, these ultrasound wave observation parts be made of the ultrasonic oscillator that a plurality of ultrasonic oscillators 21 are along the circumferential direction arranged, and ultrasonic oscillator 21 are aligned to circle-shaped or circular-arc (for example about 270 °) and carry out electron scanning.On interior all sides of the ultrasonic oscillator of so arranging 21 bed course 22 is installed, these a plurality of ultrasonic oscillators 21 are fixed on the bed course 22 by method such as bonding.In addition, acoustic lens 23 is set on the outer peripheral face of ultrasonic oscillator 21, constitutes the ultrasonic transmission/reception unit 24 that integral body is roughly drum by them.
Each ultrasonic oscillator 21 has two electrodes 25,26 respectively, and one of them electrode 25 is common electrodes 25 shared to the ultrasonic oscillator 21 of all (perhaps every specified quantities), and another electrode 26 is at each ultrasonic oscillator 21 and discrete member.And the individual electrode 26 of these ultrasonic oscillators 21 as described later, is electrically connected with Wiring pattern on being formed on flexible base, board 28.And, as shown in Figure 7, will be electrically connected with individual electrode 26 respectively by flexible base, board 28 by the cable 27 that specified quantity constitutes.On the other hand, flexible base, board 28 and can be from being connected on the principle of cable of common electrode 25, although the diagram of omission, the connection of this cable is to carry out in the tip side of ultrasonic oscillator 21.
As mentioned above, ultrasonic transmission/reception unit 24 forms the general cylindrical shape shape, and inner circumferential surface becomes passage shape path.Each member that constitutes the endoscopic observation parts is inserted the inside that leads to based on the passage shape path of this ultrasonic transmission/reception unit 24, is positioned at from the tip side of this ultrasonic transmission/reception unit 24, is fixed on the endoscope's installation component 18 that is covered by top end cap 19.And the top ends of ultrasonic transmission/reception unit 24 is docked with the end face of this top end cap 19, and base end side docks with the end face of coupling member 30 in addition.Coupling member 30 constitutes among the 2c of hard portion of top the linking part to bight 2b.
And then, be provided with bridge formation member 31 in the inboard of coupling member 30, and the top ring 32a in the square ring (angle ring) 32 of the structure of formation bight 2b is attached on coupling member 30 and the bridge formation member 31., can be clear that from Fig. 8, be to be linked by a plurality of screws 33 between coupling member 30 and bridge formation member 31, and top ring 32a is linked by a plurality of screws 34 for this reason.
And, the following function of bridge formation member 31 performances, that is, with the coupling member 30 of the base end side that is configured in the 2c of top hard portion together with the banded function of top ring 32a of the topmost position that constitutes bight 2b, the ultrasonic transmission/reception unit 24 that comprises the ultrasonic oscillator array is carried out with the function of the position restriction of the direction of the orthogonal axe of the top hard 2c of portion and to the binding function of the coalition of endoscope's installation portion 18 and top end cap 19.Thereby this bridge formation member 31 is necessary to possess high strength, and is not to be exposed to outside member, is therefore formed by metals such as rustless steels.In addition, as shown in Figure 9, bridge formation member 31 is attached at the position on the top ring 32a of coupling member 30 and bight 2b by screw 33 and 34, become cylindrical portion 31a, but have many on this cylindrical portion 31a
(being three in the present embodiment) armite 31b extends setting towards tip side.
Thereby,, can carry out location with the direction of its orthogonal axe by ultrasonic transmission/reception unit 24 is entrenched on the armite 31b.In addition, link by screw 35 between the top ends of each armite 31b and the endoscope's installation component 18.On the outer peripheral face of the cylindrical portion 31a of bridge formation member 31, be formed with ladder 31c, and the diameter of base end side increased by this ladder 31c.In addition, also form ladder 30a, and make the diameter of base end side inner peripheral surface become big by this ladder 30a at the inner peripheral surface of coupling member 30.By this ladder 31c and 30a are engaged, ultrasonic transmission/reception unit 24 is held between top end cap 19 and coupling member 30.And, both ends of the surface and the cardinal extremity face of top end cap 19 and the top end face of coupling member 30 by bonding these ultrasonic transmission/reception unit 24, carry out the location and the spline of the axis direction of ultrasonic transmission/reception unit 24, thereby ultrasonic transmission/reception unit 24 is kept regularly at assigned position.Wherein, the exodermis 36 of bight 2b extends to the outer circumferential surface section of the base end side of coupling member 30, and the fixed mechanism 37 of the top ends of this exodermis 36 by being made of kinking and adhesive, is fixed on the coupling member 30 of the 2c of top hard portion.
As indicated above, a plurality of ultrasonic oscillators of setting are electrically connected by flexible base, board 28 with cable 27.Therefore, in the mode that between ultrasonic oscillator 21 and cable 27, is held flexible base, board 28 is installed.And, flexible base, board 28, like that, the Wiring pattern that needs is formed by methods such as printings shown in Figure 10 expansion.As this Wiring pattern, by the 1st portion of terminal 29a that is electrically connected with the individual electrode 26 of ultrasonic oscillator 21 respectively, be connected electrically in the 2nd portion of terminal 29b on the cable 27 by methods such as solderings, and the distribution 29c that connects between these each the 1st, the 2nd portion of terminal 29a, 29b constitutes.This flexible base, board 28 is loaded into the 2c of top hard portion makes its integral body be drum, but as shown in figure 11, constitute each ultrasonic oscillator 21 that is arranged as circular ultrasonic oscillator array and be large-diameter portion 28a to the junction surface of this bed course 22 side (promptly the 1st portion of terminal 29a forms side), connection cord 27 sides (i.e. the formation side of the 2nd portion of terminal 29b) are minor diameter 28b, are the vertical component effect 28c that is formed by stepped between this.
Thus, flexible base, board 28 forms the ladder barrel shape, and this flexible base, board 28 is attached on the bed course 22.Here, there have ultrasonic oscillator 21 to be arranged as on the outer peripheral face of bed course 22 to be circular, and the 1st portion of terminal 29a in the flexible base, board 28 and the electrode 26 that is formed in these each ultrasonic oscillators 21 are electrically connected.Thereby the large-diameter portion 28a of flexible base, board 28 becomes the drum roughly the same with bed course 22, and this large-diameter portion 28a installs in the mode that is held between the electrode 26 of ultrasonic oscillator 21 and bed course 22.
At this, can be clear and definite from Fig. 4, the inner peripheral surface of ultrasonic oscillator 21 is positioned at the more lateral of the outer peripheral face of coupling member 30, thereby if flexible base, board 28 is directly extended at base end side as the crow flies, then forms with coupling member 30 and interfere.This is because be provided with minor diameter 28b on the base end side of the flexible base, board 28 that forms tubular.In addition, on this minor diameter 28b, be formed with the 2nd portion of terminal 29b, on these each the 2nd portion of terminal 29b, be electrically connected with cable 27 respectively by methods such as solderings.And this minor diameter 28b is not in free state, and its inner face is docked with supporting member, and is fixed on the outside of this supporting member by method such as bonding.As this supporting member, be to be arranged to one and diameter and to form less than minor diameter 22a with the outer peripheral face of this bed course 22 by being connected with bed course 22.
At this, as supporting member, also think to constitute by the member that is different from bed course 22, insert the inside of the passage shape path that the internal diameter by this bed course 22 constitutes, so thickness attenuation of bed course 22, and produce hyperacoustic reflection by the difference of the acoustic impedance between bed course 22 and the support component.Thereby, in order to increase the thickness of bed course 22, bed course 22 is extended at base end side, this is not because will make its performance padding function, but to make the function of its performance as the supporting member of the minor diameter 28b of supporting flexible substrate 28, and dwindle the diameter of this extension and become minor diameter 22a, be fixed on this minor diameter 22a by bonding minor diameter 28b flexible base, board 28.The stepped walls of bed course 22 and conduct keep by bonding quilt between the 28c of vertical portion of the portion of dividing a word with a hyphen at the end of a line of minor diameter 28 regularly from the large-diameter portion 28a of flexible base, board 28.
As indicated above, the many cables 27 that are connected with flexible base, board 28 are positioned at the outer circumferential side of the minor diameter 22a of bed course 22, and these cables 27 are connected with flexible base, board 28 at the more outer circumferential side of the equipping position of bridge formation member 31, and outgoing cable 27.On the other hand, in the position of Fig. 8, be on the position of linking part of top 2c of hard portion and bight 2b, the inboards that make cable 27 insert logical bridge formation members 31.Therefore, cable 27 is drawn in the mode that the thickness direction towards bridge formation member 31 connects.At this, the spacer portion that forms by cutting apart the armite 31b in the bridge formation member 31 is passed through.And, will be divided into many for example about 4 and bunchy by the many cables that constitute 27, thus, the bunch of cables 27B of bunchy become can Free Transform shape, insert from bight 2b and to lead to bending section 2a.
In addition, in the interior perimembranous of the ultrasonic transmission/reception unit 24 that becomes passage shape path, insert logical each member that constitutes the endoscopic observation parts.Wherein, the photoconduction 10b of two bunchys and image cable 14, its section shape can be out of shape arbitrarily.In addition, as the logical member of inserting in addition, have to constitute treatment instrument and insert the connection tube 16 of path and washing fluid supply pipe 9, the hereinafter described pipe 43 that is used in sacculus 41, providing the ultrasound wave transmitting medium.Also have, constitute the connection tube 16 of treatment instrument path, near the base end side of the position of Fig. 8 or this position shown in Figure 8, being connected with soft tube.And then as indicated above, cut apart bunchy with the cable 27 that each ultrasonic oscillator 21 is connected with the regulation radical, but bunch of cables 27B extends in bight 2b side also by in the passage shape path.
And, in body, send ultrasound wave from each ultrasonic oscillator 21 that constitutes ultrasonic transmission/reception unit 24, receive the reflective echo of organizing tomography portion of ex vivo, but for the hyperacoustic decay that suppresses to receive and dispatch by this way, at the front and back position of the installation portion of clamping ultrasonic transmission/reception unit 24, be that circle shape groove 40,40 is set on the outer peripheral face between top end cap 19 and the coupling member 30, can be clear and definite by Fig. 2, between these circle shape grooves 40,40, the expansible sacculus 41 by enclosing the ultrasound wave transmitting medium is installed.This sacculus 41 is made of the flexible film 41a that becomes tubular, and be provided with stop at the two ends of this flexible film 41a and be installed in stop installing ring 41b in the circle shape groove 40, these stop installing rings 41b is installed by stop in the mode that circle shape groove 40 is applied the fastening force effect.And, in coupling member 30, run through the row's of giving path 42 of being provided with the row's of the giving action that is used for carrying out the ultrasound wave transmitting medium, and on this row's of giving path 42, be connected with pipe 43 in the inside of sacculus 41.
By possessing above formation, insertion section 2 is inserted into those who are investigated's body cavity inside, from the Lighting Division 10 that constitutes the endoscopic observation parts to body cavity internal irradiation illumination light, and by the object lens 11a that is installed in the observation portion 11, make picture imaging on solid-state imager 13 of body cavity inside, obtain the signal of video signal of body cavity inside by this solid-state imager 13, and be sent to image signal processor, in this image signal processor, by the signal processing of stipulating, the image of display body intracavity portion on the monitor of endoscope's image demonstration usefulness.Thereby,, can carry out the splanchnoscopy of relevant body cavity internal state by visual this monitor of watching.
And, when existing pathological changes portion etc. to be concerned about the zone according to this endoscopic result, the ultrasonic transmission/reception unit 24 that constitutes ultrasound wave observation parts is moved to the regional position, opposite of this care.That is,, ultrasonic transmission/reception unit 24 is configured to the position, opposite of being concerned about the zone by making insertion section 2 predetermined distance that only advances.Then, in sacculus 41, provide the ultrasound wave transmitting medium, this flexible film 41a is expanded, connect airtight on body cavity walls.Under this state, make to constitute ultrasonic transmission/reception unit 24 and ultrasonic oscillator 21 that arrange at circumferencial direction moves successively, in body, send ultrasonic pulse, and receive its reflective echo.Here, ultrasonic oscillator 21 also can move successively singly, but by making a plurality of ultrasonic oscillators 21 postpone to move with official hour, can carry out for example electron focusing.Wherein, about the mode that the ultrasonic oscillator 21 that makes a plurality of arrangements carries out electron scanning, all be known all the time, therefore omit its explanation here.
As previously discussed, to send ultrasound observation apparatus to by the reflective echo signal that each ultrasonic oscillator 21 that constitutes ultrasonic transmission/reception unit 24 obtains, and carry out signal processing by this ultrasound observation apparatus, can obtain and comprise the relevant fault information of state of the in-vivo tissue of being concerned about the zone thus.And this ultrasonic tomogram looks like to be presented on the monitor that is attached on the ultrasound observation apparatus.Thus, can diagnose whether containing pathological changes portion etc. in organizing.
Yet, each member that constitutes the endoscopic observation parts is photoconduction 10b, image cable 14, constitute the connection tube 16 and the washing fluid supply pipe 9 of treatment instrument path, the bunch of cables 27B that draws from the ultrasonic transmission/reception unit 24 that constitutes ultrasound wave observation parts, be used in sacculus 41, providing the pipe 43 of ultrasound wave transmitting medium, 2 to insert and to lead to the mode in the main body operating unit 1 and assemble from the insertion section at least.
When carrying out this assembling, in insertion section 2 under main body operating unit 1 isolating state, at first on the top of bight 2b, the pipe 43 that will be connected with coupling member 30 inserts from the top end opening side of bight 2b with the bunch of cables 27B that is connected with ultrasonic transmission/reception unit 24, it is inserted from this bight 2b lead to the inside of bending section 2a.At this, pipe 43 is to have a flexible pipe, and this outer cable 27 is with regulation radical bunchy, and so the bunch of cables 27B of bunchy can easily be drawn towards the base end side among the bending section 2a of insertion section 2.And that bunch of cables 27B has on bending direction is flexible, and can Free Transform under the bunchy state, therefore inserts logical can extremely easily carrying out to insertion section 2 in, and the square ring or other the member 2 that can not be configured bight 2b tangle, and can successfully insert to lead to.
Next, assembling constitutes each member of endoscopic observation parts in endoscope's installation component 18, and under the state of the top piece that this endoscope's installation component 18 is formed one with top end cap 19 bindings by screw 20, photoconduction 10b, image cable 14, connection tube 16 and washing fluid supply pipe 9 are inserted from the passage shape path that is made of ultrasonic transmission/reception unit 24 successively led to the inside of bight 2b and bending section 2a.At this moment, bridge formation member 31 links with endoscope installation component 18 in advance, is fixed as connecting state by screw 35.
Thus, lead in the passage shape path if will insert with the banded bridge formation member 31 of top piece, be bonded in respectively on the top end cap 19 that links parts 30 and constitute the top piece by both ends and fix, then link fixedly connected member 30 and bridge formation members 31 by screw 33 with ultrasonic transmission/reception unit 24.And then, by screw 34, the bridge formation member 31 that links fixedly connected member 30 is fixed on the top ring 32 among the 2b of bight.The each several part that will constitute ultrasound wave observation parts thus is assembled on the insertion section 2.
As mentioned above, assembling insertion section 2, but when the insertion section 2 of ultrasonic endoscope being inserted body cavity inside etc. when carrying out this operation, if make bight 2b bending, the logical member of inserting of its inside is moved, but because the logical member of inserting in the 2b of this bight all has flexible on bending direction, and photoconduction 10b and signal of video signal are with cable 14 bundles and carry out the many bunch of cables 27B of cutting apart pack, but its cross sectional shape Free Transform, therefore when the bending operation of bight 2b, even each above-mentioned member is placed on other members, also can produce broken string, buckling, damage etc.
And flexible base, board 28 also can use the member that is shaped in the mode that becomes the ladder barrel shape in advance, but on this flexible base, board 28, forms the pattern that is called portion of terminal 29a, 29b and distribution 29c in its surface.These patterns are preferably undertaken by printing process.Therefore, shown in Figure 12 (a),, use the resin film 50 of long chi state in order on the flexible base, board 28 of this ladder barrel shape, to form pattern by printing process, in this resin film 50, can under dull and stereotyped state, print the pattern that constitutes by portion of terminal 29a, 29b and distribution 29c.
At this, owing to form the ladder barrel shape, so resin film 50 is by forming the breach 51 with Rack from one is distolateral with prescribed depth, forms the continuous 50a of portion and every the cutting part 50b of certain intervals.And shown in Figure 12 (b), the both ends of the continuous 50a of portion by making this resin film 50 engage and form ring-type.As mentioned above, become the large-diameter portion 28a that cyclic position forms flexible base, board 28, and, in this Figure 12 (b) shown in dummy line, by will be from the continuous 50a of portion to 90 ° of the portion's of dividing a word with a hyphen at the end of a line bendings to the inside of cutting part 50b, and the centre position of cutting part 50b is turned down 90 °, shown in Figure 12 (c), the 28c of vertical portion of large-diameter portion 28a, minor diameter 28b in the formation flexible base, board 28 and the conduct portion of dividing a word with a hyphen at the end of a line therebetween.And by the width and the number of suitable setting notch part 51, minor diameter 28b can form the successive drum of essence.
In other words, shown in Figure 12 (a), flexible base, board 28 is by the long portion (the continuous 50a of portion) of the roughly total length of the circumferencial direction that covers large-diameter portion and the roughly consistent length (L2 of length that has with the circumferencial direction of minor diameter
1+ L2
2+ L2
3+ L2
4+ ... L2
n) a plurality of zonal cutting part 50b formations.At this, L2
1, L2
2, L2
3, L2
4And L2
nEach all be the length of each circumferencial direction of a plurality of zonal cutting part 50b.Each cutting part 50b has from beginning length L 1 till the end of support portion certainly long portion to the portion of dividing a word with a hyphen at the end of a line of end difference.
Yet, in the bending part at two above-mentioned places, be not to be bent to linearity, but must be bent to circular-arc.Thus, if simple bending is then exerted pressure to this bending part and the part might produce wrinkle or produce uneven.In order not produce this situation bending part is carried out 90 ° of bendings sharp, as shown in figure 13,, also can form otch 53 simultaneously at the both ends of cutting part 50b along the micro hole 52 of sweep formation defined amount.And, these micro hole 52 and the open function of the stress of grooving 53 performances when being bent into circular shape, thus sweep can be finished sharp.Its result when being attached at flexible base, board 28 on the bed course 22, when improving its intensity, can prevent that pressure from acting on the ultrasonic oscillator 21 that is connected with this flexible base, board 28.
Then, use Figure 14～16, other embodiment of the head portion of insertion section 2 is described.Ultrasonic transmission/reception unit 24 forms the general cylindrical shape shape, and inner circumferential surface is a passage shape path 125.Therefore, each member that constitutes mechanism of endoscope is inserted the inside of the logical passage shape path 125 that is made of the inner peripheral surface of the bed course 22 in this ultrasonic transmission/reception unit 24, extend to tip side from ultrasonic transmission/reception unit 24, be fixed on the endoscope's installation component 118 that covers by top end cap 19.In addition, the base end part of endoscope's installation component 118 becomes major diameter end difference 118a, the head portion that constitutes the acoustic lens 23 of ultrasonic transmission/reception unit 24 extends to the anterior position of ultrasonic oscillator 21, be entrenched on the major diameter end difference 18a of this endoscope's installation component 118, by method mounting ultrasonic Transmit-Receive Unit 24 such as bonding.In addition, the base end side of ultrasonic transmission/reception unit 24 and docks by screw 34 and the banded coupling member 30 of top ring 32a that constitutes in the square ring 32 of structure of bight 2b, is fixed therebetween by bonding.
And, can be clear and definite from Figure 14, in the inside of the insertion section 2 of ultrasonic endoscope, the narrowest position is the installation portion of ultrasonic transmission/reception unit 24, is the position of passage shape path 125 of the inboard of bed course 22.As mechanism of endoscope, there are prism 11b, individual imaging apparatus 13 and the substrate 13a thereof that constitutes observation portion, the head portion of signal of video signal cable 14 to be positioned at this position.To constitute the photoconduction 10b (with reference to Figure 15,16) of Lighting Division, further will constitute the inside that the connection tube 16 of the slotting path of treatment instrument, the flow pipe 9 of supplying gas are configured in this bed course 22.Thereby, according to the thickness of bed course 22, the size of limiting channel shape path 125.Therefore, make the size of this passage shape path 125 for inserting the size of the degree of leading to above-mentioned mechanism of endoscope.And if the outside dimension of insertion section 2 is set at the value of regulation, the thickness of bed course 22 hinders the performance of its function sometimes, promptly can not absorb the hyperacoustic reflective echo that sends from the face with hyperacoustic transmitting-receiving face opposition side fully.
At this, the ultrasound wave from ultrasonic oscillator 21 is advanced to the direction of bed course 22 reflects in the boundary portion of bed course 22 with air layer.In addition, if on bed course 22, dock the acoustic impedance member different, still produce reflective echo from this member with it.
According to the above, after each member that constitutes mechanism of endoscope is installed in the inside of passage shape path 125, will become molten condition with the packing material 126 of bed course 22 same raw materials and carry out filling.This packing material 126 enters the gap between each member that constitutes mechanism of endoscope in bed course 22.In addition, connection tube 16 grades that constitute the slotting path of treatment instrument are setovered to center position with the member that bed course 22 docks and even closely connects.
Like this, in passage shape path 125, fill the identical packing material 126 of material and bed course 22, do not exist the tight filling of the mode that is involved in air to be formed with the passage shape path 125 of bed course 22 with packing material 126 and with essence.
By above such formation, when when the ultrasonic oscillator 21 that constitutes ultrasonic transmission/reception unit 24 sends ultrasonic pulses, the ultrasound wave that advances at these bed course 22 skiddings is not the inner face reflection by bed course 22, and advances towards the inside of packing material 126.Thereby, even for example under the situation of the thinner thickness of bed course 22, do not take place yet from ultrasonic oscillator 21 in the reflection of transmitting-receiving face opposition side.
In addition; the position that is provided with passage shape path 125 is the 2c of top hard portion in the insertion section 2; even therefore fill packing material 126 and the fixing slotting inner member that leads at this position; not only do not become specific question; and apply when impacting etc. at the head portion to insertion section 2, can realize the solid-state imager 13 and the substrate 13a thereof that constitute observation portion, also have the protection of the signal of video signal cable 14 that extends from this substrate 13a.And then the airtight maintenance in can also realizing in the lens barrel 12 etc.
Claims (6)
1, a kind of ultrasonic endoscope, it is the ultrasonic endoscope of the ultrasound wave observation parts of electron scanning formula being installed being installed in the hard portion of the top of insertion section on the endoscopic observation parts that possess Lighting Division and observation portion on its top end face at least and the peripheral part at the installation portion of these endoscopic observation parts, it is characterized in that
Described ultrasound wave observation parts, be provided with a plurality of ultrasonic oscillators be arranged as the ultrasonic oscillator array of cylindrical shape or circular shape and within it the face side form the bed course of drum;
Between described each ultrasonic oscillator array and described bed course, set flexible base, board, wherein, described flexible base, board has formed a plurality of side's side terminals of being connected with each electrode of described each ultrasonic oscillator, the opposing party's side terminal of connection cord and the Wiring pattern that forms respectively between these two terminals;
Described flexible base, board formation has respectively outside, and side forms the large-diameter portion of described side's side terminal and the end difference of the step structure of the minor diameter that forms described the opposing party's side terminal, inner face side in this minor diameter is provided with circular support portion, and, will comprise that the mechanism of endoscope of the solid-state imager that constitutes described endoscopic observation parts is disposed at the passage shape path that forms in the cylindric inner face side that is formed by described bed course.
2, ultrasonic endoscope according to claim 1 is characterized in that,
Described bed course only stretches out specific length from the end of described ultrasonic oscillator array towards the base end side of described top hard portion, and the diameter of the outer peripheral face by dwindling extension constitutes described end difference, with the part of undergauge as described support portion.
3, ultrasonic endoscope according to claim 1 is characterized in that,
Described flexible base, board, long portion by the almost total length of the circumferencial direction that covers described large-diameter portion, constitute with the almost consistent a plurality of banded cutting part of the circumferencial direction of length and minor diameter, this cutting part has from beginning length till the end of described support portion from described long portion to the portion of dividing a word with a hyphen at the end of a line of described end difference.
4, ultrasonic endoscope according to claim 3 is characterized in that,
On each described cutting part of described flexible base, board, from described large-diameter portion to the portion of dividing a word with a hyphen at the end of a line of end difference and from end difference in the portion of dividing a word with a hyphen at the end of a line of described minor diameter, form any of a plurality of micro hole or otch at least along bending line.
5, ultrasonic endoscope according to claim 1 is characterized in that,
Set the area of space that produces in the portion, the sealing acoustic impedance packing material identical or close in the mechanism of described endoscope of the inside of the passage shape path of the drum of described bed course with this bed course.
6, ultrasonic endoscope according to claim 5 is characterized in that,
Described packing material is made of the material with the identical material of described bed course, in described observation portion solid-state imager is set, and at least a portion of this solid-state imager is embedded in the inside of described packing material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004221065 | 2004-07-29 | ||
| JP2004221065A JP4484044B2 (en) | 2004-07-29 | 2004-07-29 | Ultrasound endoscope |
| JP2004321587 | 2004-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1726872A CN1726872A (en) | 2006-02-01 |
| CN100471460C true CN100471460C (en) | 2009-03-25 |
Family
ID=35900351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100881359A Expired - Fee Related CN100471460C (en) | 2004-07-29 | 2005-07-29 | Ultrasonic endoscope |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4484044B2 (en) |
| CN (1) | CN100471460C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4725162B2 (en) * | 2005-03-31 | 2011-07-13 | 富士フイルム株式会社 | Ultrasound endoscope |
| JP4682158B2 (en) * | 2007-01-16 | 2011-05-11 | オリンパスメディカルシステムズ株式会社 | Imaging device |
| JP5038764B2 (en) * | 2007-04-05 | 2012-10-03 | 株式会社東芝 | Ultrasonic diagnostic equipment |
| JP5250653B2 (en) * | 2011-03-30 | 2013-07-31 | 富士フイルム株式会社 | Endoscopic imaging apparatus and endoscope |
| CN102793568B (en) * | 2011-05-23 | 2014-12-10 | 香港理工大学 | Annular-array ultrasonic endoscope probe, preparation method thereof and fixing rotating device |
| CN105451664B (en) * | 2013-10-10 | 2018-06-05 | 奥林巴斯株式会社 | Ultrasonic endoscope top ends |
| WO2017149815A1 (en) * | 2016-03-03 | 2017-09-08 | オリンパス株式会社 | Ultrasonic endoscope |
| EP3437565B8 (en) * | 2016-04-01 | 2021-05-26 | FUJIFILM Corporation | Ultrasonic oscillator unit and ultrasonic endoscope using same |
| JP6625746B2 (en) | 2016-06-30 | 2019-12-25 | 富士フイルム株式会社 | Ultrasound endoscope and method of manufacturing the same |
| JP6791799B2 (en) * | 2017-04-03 | 2020-11-25 | オリンパス株式会社 | Endoscopic ultrasound |
| CN110381847A (en) * | 2017-10-30 | 2019-10-25 | 奥林巴斯株式会社 | The manufacturing method of ultrasonic oscillator, ultrasonic endoscope and ultrasonic oscillator |
-
2004
- 2004-07-29 JP JP2004221065A patent/JP4484044B2/en not_active Expired - Fee Related
-
2005
- 2005-07-29 CN CNB2005100881359A patent/CN100471460C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006034743A (en) | 2006-02-09 |
| JP4484044B2 (en) | 2010-06-16 |
| CN1726872A (en) | 2006-02-01 |
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