CN101584905B

CN101584905B - Catheter handle

Info

Publication number: CN101584905B
Application number: CN2009102038638A
Authority: CN
Inventors: 大川靖洋
Original assignee: Japan Lifeline Co Ltd
Current assignee: Japan Lifeline Co Ltd
Priority date: 2008-05-20
Filing date: 2009-05-20
Publication date: 2012-10-17
Anticipated expiration: 2029-05-20
Also published as: HK1137674A1; JP4224122B1; CN101584905A; JP2011055847A; KR100926640B1

Abstract

Provided a catheter handle which can be extremely easily operated and can easily stop the operating part at the arbitrary axial position. The catheter handle has a handle body (24); an operating section (22) freely installed and moving in the axial direction relative to the handle body (24); a ring flexible assembly (42) installed between the handle body (24) and the operating section (22), whose inner surface is contacted to the conical surface (40) of the outer circumference of the operating section (22); washers (41,43) installed in a mode of clipping the flexible assembly (42) from the axial two sides of the handle body (24).

Description

Catheter handle

Technical field

The present invention relates to the catheter handle of good operability.

Background technology

As catheter tube for medical treatment, the scheme of various conduits has been proposed.At the distolateral catheter handle that is typically provided with of the peri position of conduit.Catheter handle has proposed various schemes according to the kind of conduit.

The operating portion that the operation catheter handle is for example arranged is when wanting to make the amphi position end of conduit and when crooked and tensile situation.

As the catheter handle that uses in this situation, shown in the for example following patent documentation 1, the scheme of the handle of the piston structure of the driver part that proposed in long tube, to pack into.In this existing handle, the external diameter of piston and the internal diameter of cylinder body are certain vertically.

According to the method for using of conduit, exist amphi position end with conduit inserts in patient's the body, desire keeps conduit amphi position end former state crooked the situation of shape.Under these circumstances, need brake moving axially of operating portion catheter handle.Therefore, proposed in piston periphery and cylinder body to install between week annular resilient parts such as O shape ring, the operating portion that makes catheter handle vertically can be in the scheme of the arresting structure in position arbitrarily.

But existing handle because the external diameter of piston is certain with the internal diameter of cylinder body vertically, if will improve braking ability, then exists move operation to the operating portion of handle from initial change weight, the problem of operating difficulties.In addition, if improve operability, the problem that then exists braking ability to descend.

Therefore, in order to solve said problem, the applicant has proposed to form in the piston periphery scheme of the structure of awl.But, known because form awl in the handle of such structure at the moving part of handle, so to slit (gap) big direction move operation operating portion the time, the risk that exists O shape ring may be involved in this gap, the problem that exists operability to descend.

[patent documentation 1] TOHKEMY 2003-319915 communique

Summary of the invention

The problem that invention will solve

The present invention is in view of such practical situation, and its purpose is to provide a kind of good operability, and at the catheter handle of stop operation portion easily of axial location arbitrarily.

Solve the means of problem

In order to reach said purpose; Catheter handle involved in the present invention comprises: handle body; The operating portion that said relatively handle body is mounted to freedom of movement in the axial direction; The annular resilient parts that be installed between said handle body and the said operating portion, inner peripheral surface contact with the conical surface of the outer peripheral face that is formed at said operating portion clip the packing ring that said elastomeric element is installed from the axial both sides of said handle body.

Be preferably; The peri position end of conduit pipe fitting is fixed on said operating portion; Said elastomeric element and packing ring are installed on the said handle body; The part of said operating portion embeds week in the said handle body, in embedding said handle body, forms the said conical surface on the outer peripheral face of the said operating portion in week, in said conduit pipe fitting, inserts logical operation and uses silk thread; Said operation is fixed on the amphi position end of silk thread on the part of amphi position end of said conduit pipe fitting; Said operation is fixed on the part of said handle body with the peri position end of silk thread, moves to the amphi position end direction relative to said handle body through making said operating portion, and said elastomeric element moves axially relatively the big side of external diameter of the said conical surface.

Be preferably; In embedding said handle body, form the conical surface that diminishes to amphi position end direction external diameter on the outer peripheral face of the said operating portion in week; The inner peripheral surface of said elastomeric element contacts with the outer peripheral face of the said conical surface with the inner peripheral surface of said packing ring, can constitute movably vertically.

Be preferably, move relative to said handle body vertically, operate the amphi position end of said conduit pipe fitting through making said operating portion.

Be preferably, said packing ring is by constituting than the little parts of said elastomeric element frictional resistance.

Be preferably, said packing ring is by constituting than the high parts of said elastomeric element hardness.

Be preferably, said packing ring is made up of fluororesin or metal.

The effect of invention

According to the present invention, a kind of good operability can be provided and all make the catheter handle of operating portion stop easily at axial location arbitrarily.

Description of drawings

Fig. 1 is the overall perspective view of the related conduit of an embodiment of the present invention.

Fig. 2 is the cutaway view of the major part of catheter handle shown in Figure 1.

Fig. 3 is the cutaway view of the major part of further presentation graphs 2.

Fig. 4 is the state of operating portion has been moved in expression from the state of Fig. 3 a cutaway view.

Fig. 5 is the cutaway view of the major part of further presentation graphs 3.

Symbol description

2... front end can be partial to operation conduit 4... conduit pipe fitting 20... catheter handle 22... operation and be operated with silk thread 40... conical surface 42...

O shape ring

41,43... packing ring with button 24... handle body 30...

The specific embodiment

Below, according to embodiment explanation the present invention shown in the drawings.

As shown in Figure 1, the related front end of an embodiment of the present invention can be partial to operation conduit 2, for example is diagnosis or the treatment that is used for arrhythmia, in the amphi position end of conduit pipe fitting (duct member) 4, and dististyle 10 and a plurality of adapter rings 12 before installing.Before dististyle 10 and adapter ring 12 work as electrode, for example fix through connecting with the relative conduit pipe fitting 4 of the bonding grade of bonding agent.

Peri position end mounting knob 20 at conduit pipe fitting 4.Be connected with lead respectively at conduit pipe fitting 4 and handle 20 inside, its front end is electrically connected with the preceding dististyle 10 and the adapter ring 12 that constitute electrode.In addition, the cardinal extremity of these leads is connected on the adapter 21, and this adapter 21 is fixed in the rearward end of handle shown in Figure 2 20.In addition, the operation of deflection move operation (yaw operation) that the amphi position end that is used to carry out conduit pipe fitting 4 is installed on handle 20 is with button 22.

Conduit pipe fitting 4 is made up of the duct member of hollow; Also can be by constituting along the identical pipe fitting of axial characteristic, but preferably have the reasonable amphi position end part of bendability integrally formed in the axial direction with amphi position end part relatively, relatively have inflexible peri position end parts than the amphi position end part.In addition, in Fig. 1, though the length of diagram conduit pipe fitting 4 is short, in fact, than the axial length long number of handle body 20 doubly～tens of times degree.

Conduit pipe fitting 4 for example is made up of synthetic resin such as polyolefin, polyamide, polyethers polyamide, polyurethane.The external diameter of conduit pipe fitting 4 is generally 0.6～3mm degree, and its internal diameter is 0.5～2.5mm degree.Insulate respectively through the axial lumen of conduit pipe fitting 4 with preceding dististyle 10 that constitutes electrode shown in Figure 1 and the lead that adapter ring 12 is connected.

Preceding dististyle 10 shown in Figure 1 and adapter ring 12, for example the metal by good conductivity such as aluminum, copper, rustless steel, gold, platinums constitutes.In addition, in order to have the radiography property good to X ray, preferably these preceding dististyles 10 and adapter ring 12 are made up of platinum etc.Though before not special qualification of external diameter of dististyle 10 and adapter ring 12, the external diameter equal extent of preferred and conduit pipe fitting 4 is generally the degree of 0.5～3mm.

The yaw parts are being accommodated near the amphi position end of conduit pipe fitting 4 inside.Do not limit especially as the yaw parts, for example constitute by leaf spring etc.On leaf spring, connect the amphi position end of fixing operation like Fig. 2～shown in Figure 4 with silk thread 30 as these yaw parts.

Though operation does not limit with the external diameter of silk thread 30 is special, is preferably 0.01～0.3mm, more preferably 0.03～0.08mm.This operation is that superelastic alloy constitutes by Ni-Ti for example with silk thread 30, but also needn't be made up of metal.Operation for example also can be made up of high-intensity non-conductive silk thread etc. with silk thread 30.

Operation is with the peri position end of silk thread 30, and is as shown in Figure 2 behind the tension force of adjustment operation with silk thread 30 in this embodiment, is fixed on the thread tension adjustor 32.Thread tension adjustor 32 in the inside of the handle body 24 that is installed in handle 20 with axially moving freely.Through this thread tension adjustor 32 is fixed on the axial location of handle body 24 internal rules, can adjust the tension force of operation with silk thread 30.

As shown in Figure 2, the peri position end of conduit pipe fitting 4 through sleeve pipe 26, is fixed on operation with on button 22 and the axis part 28.Operate corresponding with operating portion with button 22 and axis part 28.Axis part 28, the inside of inserting the axis hole 25 that is formed at handle body 24 inside, handle body moves axially free state for 24 one-tenth relatively.

The operator catches handle body 24 with one hand, with button 22, makes axis part 28 relative handle body 24 movable operation vertically with this singlehanded finger manipulation operation.Because axis part 28 is fastened on the peri position end of conduit pipe fitting 4, so when making axis part 28 when handle body 24 moves vertically, the peri position end of conduit pipe fitting 4 is operated relatively with silk thread 30 and relatively moved in the axial direction.In addition, operation is fixed on the front end of silk thread 30 near the yaw parts the amphi position end of being located at conduit pipe fitting 4, and the peri position end of operating with silk thread 30 is fixed on the thread tension adjustor 32 that is fixed in handle 20.

When making axis part 28 move to amphi position when distolateral, then remain fixed under the state on the thread tension adjustor 32 at the peri position end of operation with silk thread 30, the peri position end of conduit pipe fitting 4 relatively moves to amphi position is distolateral.In this case,, on operating, apply tension force, conduit pipe fitting 4 is axially being applied compression stress with silk thread 30 through the operation of this axis part 28.In addition, because operation is almost constant with the axial length of silk thread 30 and conduit pipe fitting 4, so conduit pipe fitting 4 and operation will bendings with silk thread 30.Its result, as shown in Figure 1, the action of yaw deflection is carried out in the amphi position end of conduit pipe fitting 4 shown in arrow A.

That is, the amphi position end of conduit 2 can pass through the operation of the handle 20 shown in Figure 1 of X operation vertically with button 22, thus tortuous the moving of deflection A direction.In addition,, be inserted under the endoceliac state, can freely setting the direction of the A direction of relative conduit 2 if handle body 20 is rotated around axle.

At this embodiment,, on the outer peripheral face of axis part 28, form the conical surface 40 like Fig. 3 and shown in Figure 4.The conical surface 40 is the more little conical surfaces of the distolateral external diameter of the amphi position of more past handle body 24.The axial length of the preferred conical surface 40 and operation with button 22 relative handle body 24 in the equal in length of axial relatively-movable scope or longer.Specifically, the length that the conical surface 40 is axial is preferably 5～20mm.The mutually countershaft core in awl angle of inclination of the conical surface 40 is preferably the angle of 0.1～2.0 degree.

The maximum outside diameter of the conical surface 40 is sizes little or more equal than the internal diameter of axis hole shown in Figure 2 25, and X is inner mobile at axis hole 25 vertically with decision axis part 28.The axial length of axis part 28 is compared with the axial length of the conical surface 40, preferably long 40～80mm.

Peripheral shape at the amphi position end 24a of handle body 24 becomes outer screw section 51, pro-end shield 44 interior week form female thread portion 52.Outer screw section 51 forms screw thread with female thread portion 52 and combines.The internal diameter of the amphi position end 44a of preceding end shield 44 is littler than the internal diameter in the interior week of the preceding end shield 44 of female thread portion's 52 formation.Between the amphi position end 44a of the amphi position end 24a of handle body 24 and preceding end shield 44, form annular groove 46 between the interior week of female thread portion 52 and the periphery of axis part 28.

O shape ring 42 as the annular resilient parts is installed in annular groove 46,

packing ring

41 and 43 is installed in its axial both sides.The female thread portion 52 of end shield 44 before being screwed into through the outer screw section 51 with handle body 24 regulates the axial length of annular groove 46, and the O shape ring of being clamped by

packing ring

41 and 43 42 is in axial deformation, and the fastening force of the O shape of the conical surface 40 of centering shaft portion 28 ring 42 changes.

As shown in Figure 5, the axial width t0 of O shape ring 42 is preferably 0.5～4mm.In addition, the axial width t1 of

packing ring

41,43, t2 can be identical, also can be different.Identical through making width t1 and width t2, the cost in the time of can reducing the packing ring manufacturing.

The axial width t0 of preferred O shape ring 42 surpasses axial width t1, the t2 of packing ring 41,43.In addition, the gap of the axial gap width t4 that forms between the peri position end 44b of Fig. 3 and cover 44 shown in Figure 4 and the handle body 24 can be adjusted by width t1, the t2 of packing ring 41,43.Width t1, the t2 of preferred gap width t4

adjustment packing ring

41,43 make it as far as possible little.

O shape ring 42 and

packing ring

41,43 on these rings not under the state of external force action, have same inner diameter D2.Do not act under these ring states of 41～43 in external force, the maximum outside diameter D1 of preferred inside diameter D 2 and the conical surface 40 of axis part 28 but also can constitute the degree of inside diameter D 2 than the big 0.05～0.1mm of maximum outside diameter D1 about equally.

The D outer diameter 4 of O shape ring 42 and packing ring 43 equates with the internal diameter of the amphi position end 24a of handle body 24.The D outer diameter 3 of the packing ring 41 that contacts with the amphi position end 44a of preceding end shield 44 is littler than the internal diameter of the cover 44 of annular groove 46, and the internal diameter of the amphi position end 44a of cover 44 is bigger than D5.

In addition, in Fig. 5, the D outer diameter 3 of packing ring 41 is drawn than the external diameter the earth of packing ring 43, but in fact, the D outer diameter 3 of preferred washer 41 and the D outer diameter of packing ring 43 4 equate.Through such formation, can further reduce and make 41,43 o'clock cost of packing ring.

O shape ring 42 for example is made up of rubber such as silicone rubber, acrylonitrile-butadiene rubber, fluorubber or synthetic resin etc.

Packing ring

41,43 for example preferably is made up of fluororesin, metal etc.Preferred

washer

41,43 is encircled 42 frictional resistance little (perhaps sliding easily) than O shape, hardness high (perhaps Young's modulus of elasticity is high).

The JIS-A hardness of O shape ring 42 is preferably A30～A70, and the hardness of

packing ring

41,43 is preferably more than the D40 of JIS-D hardness.In addition, so-called in the present invention JIS-A hardness is meant that with JIS specification K-6301 be the physics value of reference measurement.

Then, can be partial to the method for using of operating conduit 2 to the related front end of this embodiment describes.The operator catches handle body 24 with one hand, with the operation of this singlehanded finger manipulation with button 22, relative handle body 24, for example from state shown in Figure 3 to state of operation axis part 28 shown in Figure 4.

In this case, because axis part 28 is fastened on the peri position end of conduit pipe fitting 4,, conduit pipe fitting 4 axially relatively moving with silk thread 30 so operating relatively.Its result, as shown in Figure 1, the amphi position end of conduit pipe fitting 4 becomes the case of bending shown in arrow A from linear state.

And in this embodiment, move to the amphi position end direction relative to handle body 24 through axis part 28, O shape ring 42 and

packing ring

41,43 relative these axis parts 28 are axially relatively moving to a big side from the little side of the external diameter of the conical surface 40.That is, in this case, answer, O shape ring 42 is increased to the power of the direction of circumferencial direction expansion with this mobile phase.In addition, because the internal diameter of cannelure 46 is constant, so move correspondingly with this, the spaced radial of shape annular groove 46 narrows down, and the power of O shape ring 42 pushing axis parts 28 and handle body 24 is strengthened, and the frictional force of O shape ring 42 and axis part 28 increases.

In addition, make axis part 28 relative to handle body 24 when peri position extreme direction moves, O shape ring 42 relative axis parts 28 are located opposite from the external diameter minimum position of the conical surface 40.Therefore, in this case, because the interval of axis part 28 and cannelure 46 is the wideest, so O shape ring 42 pushing

axis parts

28 and 44 the power of covering are minimum, the frictional force of O shape ring 42 and axis part 28 reduces.Therefore, make operation with button 22 relatively handle body 24 operate with button 22 mobile vertically to leaving the mobile initial stage that axial direction moves by lighter power.

Packing ring

41,43 constitutes by encircle the little parts of 42 frictional resistance than O shape, so do not hinder the fastening of the conical surface 40 of O shape ring 42 or move axially.In addition,,, the fastening of the conical surface 40 diminished, do not hinder the fastening of the conical surface 40 of O shape ring 42 or move axially by what strain produced so encircle 42 differently with O shape because packing

ring

41,43 constitutes by encircle the high parts of 42 hardness than O shape.

In addition,

packing ring

41,43 can prevent that O shape ring 42 stings the into gap of handle body 24 and the conical surface 40, prevent especially simultaneously O shape ring 42 sting into before amphi position end 44a and the gap of the conical surface 40 of end shield 44, prevent the move operation defective effectively.

In addition, as shown in Figure 4 even let the finger leave operation with button 22, because O shape ring 42 contact with the big conical surface 40 of external diameter, so, operate not moving axially with button 22 owing to its frictional force.Thereby even let the finger leave operation with button 22, the amphi position end of conduit pipe fitting 4 as shown in Figure 1 also can keep crooked state.

In the amphi position end of conduit pipe fitting 4 shown in Figure 1 is under the straight condition, as long as against the frictional force of the conical surface 40 with O shape ring 42, operation is moved vertically with button 22, it is just passable to turn back to state shown in Figure 3 from Fig. 4.At this moment, O shape ring 42 is owing to the big outer radius portion from the conical surface 40 moves to little outer radius portion, so the frictional force of the conical surface 40 and O shape ring 42 diminishes gradually.

In addition, through the power of

adjustment packing ring

41,43 fastening O shape rings 42, can adjust the operability of catheter handle.When fastening force became big, the frictional force of the conical surface 40 and O shape ring 42 became big, and when fastening force diminished, the conical surface 40 diminished with the frictional force of O shape ring 42.

The female thread portion 52 of end shield 44 carried out before the adjustment of fastening force was screwed into through the outer screw section 51 with handle body 24; Regulate the axial length of cannelure 46; Be clipped in O shape ring 42 distortion vertically in packing

ring

41 and 43, the fastening force of the O shape of the conical surface 40 of axis part 28 ring 42 changes relatively.

In addition, clamp ratchet with ring 50 between peri position end 44b that also can pro-end shield 44 and the handle body 24.Ratchet is when end shield 44 along the circumferential direction rotates before making, the parts of the mechanism that gives the ratchet sense to be housed with ring 50.The adjustment of fastening force can be after installing catheter handle, carries out before for example giving operator such as doctor, also can operator self adjust.

In addition, the present invention is not limited to above-mentioned embodiment, can carry out various changes.For example, catheter handle involved in the present invention is not limited to the front end of illustrated embodiment can be partial to the operation conduit, also goes for other conduit.

Claims

1. catheter handle; It is characterized in that; Have operating portion that handle body, said relatively handle body be mounted to freedom of movement in the axial direction, be installed in cyclic elastomeric element between said handle body and the said operating portion, clip the packing ring that said elastomeric element is installed from the axial both sides of said handle body

The peri position end of conduit pipe fitting is fixed on the said operating portion,

Said elastomeric element and packing ring are installed on the said handle body,

The axis that constitutes said operating portion partly inserts the interior week of said handle body,

In inserting said handle body, form the conical surface that diminishes towards amphi position end direction external diameter on the outer peripheral face of the said axis part in week,

The inner peripheral surface of said elastomeric element contacts with the outer peripheral face of the said conical surface with the inner peripheral surface of said packing ring, can move vertically,

In said conduit pipe fitting, insert logical operation and use silk thread,

Said operation is fixed on the amphi position end of silk thread on the part of amphi position end of said conduit pipe fitting,

Said operation is fixed on the part of said handle body with the peri position end of silk thread,

Through said operating portion is moved to the amphi position end direction from the peri position end relative to said handle body, the amphi position end of said conduit pipe fitting is tortuous, and simultaneously, said elastomeric element relatively moves to the big side of the external diameter of the said conical surface vertically.

2. catheter handle as claimed in claim 1; It is characterized in that; Through said operating portion is moved to the amphi position end direction from the peri position end relative to said handle body; The amphi position end of said conduit pipe fitting becomes tortuous state from linear state, and simultaneously, said elastomeric element relatively moves to the big side of the external diameter of the said conical surface vertically.

3. according to claim 1 or claim 2 catheter handle is characterized in that said packing ring is by constituting than the little parts of said elastomeric element frictional resistance.

4. according to claim 1 or claim 2 catheter handle is characterized in that said packing ring is by constituting than the high parts of said elastomeric element hardness.

5. according to claim 1 or claim 2 catheter handle is characterized in that said packing ring is made up of fluororesin or metal.