JP2013192670A - Handle for catheter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle for a catheter, capable of extending elongated components such as lead wires and various kinds of tubes inserted from the distal end side along a center axis in the longitudinal direction.SOLUTION: A handle for a catheter includes: a handle body 10; a rotational operating part with a rotating plate 20 and an intermediate member 25; an adjusting pin 30; an adjusting knob 40; and an O-ring 50. The intermediate member 25 is disposed between a first rotating member 21 and a second rotating member 22 which constitute the rotating plate 20, and which is non-rotatably fixed to the handle body 10. Guide grooves 251 and 252 for extending a tube 70 along a center axis (Z) of the handle body 10 to be inserted into the handle body 10, and an outer peripheral wall 253 of the rotational operating part are integrally formed in the intermediate member 25. A through hole 35 into which the tube 70 extending along the center axis (Z) can be inserted is formed in the adjusting pin 30.

Description

  The present invention relates to a catheter handle, and more particularly to a catheter handle that is mounted on the proximal end side of a catheter shaft and constitutes a tip-deflable catheter.

A medical catheter is usually provided with a handle on the proximal end (proximal end) side of the catheter shaft.
Various catheter handles have been proposed depending on the type of catheter. For example, there is a case where the distal end portion (distal end) of the catheter is desired to be bent or stretched by operating the catheter handle. As a mechanism for operating and deflecting the distal end portion of the catheter on the proximal side in this way, the proximal end of the operation wire is connected to a rotating plate rotatably mounted on the handle body, and the rotating plate is rotated. A mechanism for changing (deflecting) the direction of the distal end of the catheter by operating it has been introduced (see Patent Document 1).

Furthermore, the present applicant has proposed a catheter handle as shown in FIG. 6 as a catheter handle capable of adjusting the operating force of the rotating plate (see Patent Document 2).
The catheter handle includes a handle main body, a rotary plate 83 disposed between the handle member 81 and the handle member 82 constituting the handle main body, and a base portion 841 fixed to the handle member 81. An adjustment pin 84 that is disposed so as to pass through the rotation plate 83 along the rotation axis 83 and whose front end portion is a male screw portion 842, and a female screw portion 852 that is screwed with the male screw portion 842 of the adjustment pin 84. The adjustment knob 85 that is rotatably attached to the handle member 82, and the screwing depth (screwing depth) between the male screw portion 842 of the adjustment pin 84 and the female screw portion 852 of the adjustment knob 85. An O-ring 86 arranged between the handle member 81 and the rotary plate 83 and a handle member 82 and the rotary plate 83 are arranged so as to change the operating force of the rotary plate 83. And a washer 87.
By rotating the handle adjustment knob 85 with respect to the handle member 82, the screwing depth between the male screw portion 842 and the female screw portion 852 is changed, and thereby, the tightening force of the O-ring 86 to the rotating plate 83 is changed. Changes. Here, when the tightening force by the O-ring 86 increases, the operation of the rotating plate 83 becomes heavy, and when the tightening force decreases, the operation of the rotating plate 83 becomes light.

The inside of the rotating plate 83 constituting the catheter handle shown in FIG. 6 is in the state shown in FIG. 7, for example.
As shown in FIG. 7, the operation wire 91 a extending from the operation tube 90 to the inside of the rotating plate 83 is arranged along the annular guide rail (convex portion) 92 on the right side of the rotating plate 83. It is fixed to the rotating plate 83 by a fastener 93a. On the other hand, the operation wire 91b extending from the operation tube 90 to the inside of the rotary plate 83 is disposed along the outer periphery of the annular guide rail (convex portion) 92 on the left side of the rotary plate 83, and the wire fastener 93b. It is being fixed to the rotating plate 83 by. In FIG. 7, 94 a and 94 b are knobs of the rotating plate 83, and 95 is an outer peripheral wall (convex portion) formed on the rotating plate 83.

  When the rotating plate 83 is rotated in the direction of the arrow 96a from the state shown in FIG. 7, the operation wire 91a disposed along the outer periphery of the guide rail 92 is pulled, so that it is attached to the distal end side of the handle. The distal end of the catheter shaft is bent (deflected) to the right. On the other hand, when the rotary plate 83 is rotated in the direction of the arrow 96b, the operation wire 91b disposed along the outer periphery of the guide rail 92 is pulled, thereby leading to the distal end of the catheter shaft attached to the distal end side of the handle body. The part turns to the left (deflects).

JP 2005-230471 A JP 2010-94353 A

  Long parts such as electrode lead wires and various tubes are inserted into the catheter handle from the proximal end of the catheter shaft, and these long parts extend inside the handle. In addition, the catheter shaft itself may extend inside the handle.

  However, a rotating plate is disposed on the center axis in the longitudinal direction inside the handle. In the handle that can adjust the operating force of the rotating plate as shown in FIG. Since the adjustment pin 84 is arranged on the rotating shaft, the long component inserted into the handle cannot be extended along the central axis in the longitudinal direction of the handle, and the rotating plate and the adjusting pin are avoided. So you have to bypass them. For example, in the inside of the handle shown in FIG. 6, a long component is passed between the handle member 81 and the rotating plate 83.

As described above, in order to circumvent the long component while avoiding the rotating plate and the adjusting pin, the long component must be bent.
However, if the lead wire, which is a long component, is bent, there is a risk of kinking or disconnection.
In addition, for example, if a physiological saline supply tube in a catheter provided with an irrigation mechanism is bent greatly, there is a risk of liquid leakage.
Furthermore, if the sheath tube (steerable sheath) in the sheath catheter is bent, it becomes difficult to insert the catheter or the like at the bent portion of the sheath tube.

  On the other hand, when a long component that bypasses the rotating plate (a long component passed between the rotating plate and the handle member) is in contact with the rotating plate, the rotating plate rotates the long component. The surface may be abraded, causing abnormal noise during operation, and long parts (particularly lead wires) may be damaged.

The present invention has been made based on the above situation.
A first object of the present invention is to provide a catheter handle capable of extending a long part such as a lead wire or various tubes inserted from the distal end side along a central axis in the longitudinal direction. There is.
A second object of the present invention is to provide a catheter handle capable of extending a long component inserted inside from the distal end side along the central axis in the longitudinal direction without contacting the rotating plate. There is.

(1) The catheter handle of the present invention is a handle attached to the proximal end side of the catheter shaft,
A handle body formed by combining a first handle member and a second handle member;
It is disposed between the first handle member and the second handle member, and is attached to the handle body so as to be rotatable around a rotation axis perpendicular to the longitudinal direction thereof, and deflects the distal end of the catheter shaft. A rotating operation unit having a rotating plate to which a proximal end of an operation wire for connecting is connected;
An adjustment pin that is fixed to the first handle member so as not to rotate and is arranged to penetrate the rotating plate along the rotation axis of the rotating plate, and has an external thread portion at a tip thereof.
An adjustment knob having a female screw portion that is screwed with a male screw portion of the adjustment pin, and is rotatably attached to the second handle member;
The handle body (the first handle member or the second handle member) so that the operating force of the rotating plate changes according to the screwing depth between the male screw portion of the adjustment pin and the female screw portion of the adjustment knob. And an elastic member disposed between the rotating plate and the rotating plate;
The rotating operation unit is a rotating plate formed by combining a first rotating member and a second rotating member formed in a disk shape having the same diameter.
An intermediate member disposed between the first rotating member and the second rotating member and fixed to the handle body so as not to rotate;
In the intermediate member, a guide path for extending a long component inserted into the handle body from the distal end side along the central axis in the longitudinal direction of the handle body;
An outer peripheral wall of the rotation operation unit having a shape matching the outer peripheral shape of the rotating plate is integrally formed;
The adjustment pin is formed with a through hole into which a long part extending along the central axis can be inserted.

  According to the handle having such a configuration, the distal end portion of the catheter shaft can be bent and deflected by rotating the rotating plate and pulling the operation wire.

And by arrange | positioning an intermediate member between the 1st rotation member and 2nd rotation member which comprise a rotating plate, this intermediate member acts as a spacer, and it is between 1st rotation member and 2nd rotation member. In addition, it is possible to secure a space for inserting a long part (a space surrounding the central axis in the longitudinal direction of the handle body).
In addition, the extending direction of the long part inserted into the inside of the handle body is regulated by the guide path formed in the intermediate member and the through hole formed in the adjustment pin. Can extend along the longitudinal central axis.
Since the intermediate member and the adjustment pin are both fixed to the handle body so as not to rotate, even if the rotating plate is rotated, the extension of the long part regulated by the intermediate member and the adjustment pin is performed. The direction never changes.

Further, the outer peripheral wall of the rotation operation portion formed on the intermediate member can prevent the operation wire from protruding when the rotation plate is rotated.
Since the intermediate member is fixed to the handle body so as not to rotate, even if the rotating plate is rotated, the tip deflection operation by the operation wire is not hindered by the outer peripheral wall of the rotation operation portion.
Further, the guide path that regulates the extending direction of the long parts and the outer peripheral wall of the rotation operation unit are integrally formed as a component part of an intermediate member that is fixed to the handle body so as not to rotate. Even if the rotating plate is rotated, the outer peripheral wall of the rotating operation unit does not interfere with the long component whose extending direction is regulated by the guide path.

(2) In the catheter handle of the present invention, the long component extending along the central axis in the longitudinal direction of the handle body is not brought into contact with either the first rotating member or the second rotating member. Thus, it is preferable that the guide path is formed (so that the long component is separated from the inner surface of the rotating member).

  The first rotating member and / or the second rotating member comes into contact with the elongated part extending along the central axis by guiding the elongated part by the guide path formed in this way. Therefore, it is possible to reliably prevent the generation of abnormal noise during operation of the rotating plate and the damage (scratch damage) of long parts.

(3) In the catheter handle of the present invention, the long component extending along the central axis in the longitudinal direction of the handle body is not brought into contact with either the first rotating member or the second rotating member. Thus, it is preferable that a through hole is formed in the adjustment pin.

  By passing the long part through the through-hole thus formed, it is possible to effectively prevent the long part from being bent or loosened and coming into contact with the rotating member.

(4) In the catheter handle of the present invention, it is preferable that the guide path in the intermediate member is a guide groove formed on the distal end side and the proximal end side of the intermediate member.

(5) In the catheter handle according to the present invention, it is preferable that the long component is a tube, in particular, a physiological saline supply tube or a sheath tube.
The tube may be a catheter shaft.

  According to the catheter handle of the present invention, long components such as lead wires and various tubes inserted into the handle body from the distal end side can be extended along the central axis in the longitudinal direction of the handle body. Thus, it is not necessary to bend the long component inside the handle body, and the above-described problems associated with bending can be avoided.

  Also, by adjusting the guide hole formed in the intermediate member and the through hole in the adjustment pin (for example, adjusting the depth of the guide groove or the diameter of the guide hole as the guide path), It is possible to extend the long component inserted into the handle along the central axis in the longitudinal direction of the handle body without contacting the rotating plate (the first rotating member and the second rotating member). Thereby, the problem of generation | occurrence | production of the noise at the time of operation and damage (scratch | scratch) of a long component can be avoided.

It is a top view showing a catheter provided with a handle concerning one embodiment of the present invention. It is a cross-sectional view (II-II cross-sectional view of FIG. 1) showing the main part of the handle shown in FIG. It is a longitudinal cross-sectional view (III-III cross-sectional view of FIG. 1) showing the main part of the handle shown in FIG. FIG. 4 is a cross-sectional view (IV-IV cross-sectional view of FIG. 2) showing a main part of the handle shown in FIG. It is a perspective view which shows the component of the handle | steering-wheel shown in FIG. It is a cross-sectional view showing a main part of a conventional catheter handle. It is sectional drawing (VII-VII sectional drawing of FIG. 6) which shows the principal part of the conventional catheter handle.

  A handle 100 according to the present embodiment shown in FIGS. 1 to 5 is a handle that is attached to the proximal end side of the catheter shaft 200 to constitute an electrode catheter (a catheter that can be operated to deflect the distal end), and is a first handle member 11. And the second handle member 12 are disposed between the handle body 10 and the first handle member 11 and the second handle member 12, and are rotatable about the rotation axis (P) with respect to the handle body 10. The base 31 is fixed to the rotation operation unit having the rotation plate 20 attached to the first handle member 11 and is arranged to penetrate the rotation plate 20 along the rotation axis (P). The adjustment pin 30 having the male screw portion 33 at the tip thereof and the female screw portion 43 screwed with the male screw portion 33 of the adjustment pin 30 are rotated with respect to the second handle member 12. The first handle member so that the operating force of the rotary plate 20 changes according to the screwing depth of the adjustment knob 40 mounted on the functioning pin, the male screw portion 33 of the adjustment pin 30 and the female screw portion 43 of the adjustment knob 40. 11 and an O-ring 50 (elastic member) disposed between the rotating plate 20 and a washer 55 disposed between the second handle member 12 and the rotating plate 20, The rotating plate 20 is a combination of the first rotating member 21 and the second rotating member 22, and the handle body is disposed between the first rotating member 21 and the second rotating member 22 constituting the rotating plate 20. And an intermediate member 25 that is fixed so as not to rotate with respect to the tube 10. A tube 70 (long component) inserted into the handle body 10 is provided in the intermediate member 25 in the longitudinal direction of the handle body 10. Along the central axis (Z) The guide groove (the guide groove 251 on the front end side and the guide groove 252 on the rear end side) for extending and the outer peripheral wall 253 of the rotation operation unit having a shape that matches the outer peripheral shape of the rotary plate 20 are integrated. The adjustment pin 30 is formed with a through hole 35 through which a tube 70 extending along the central axis (Z) can be inserted.

The catheter shown in FIG. 1 is an electrode catheter used for diagnosis or treatment of arrhythmia, and this electrode catheter is constituted by a catheter shaft 200 and a handle 100 of the present embodiment attached to the proximal end side thereof. Yes.
A distal end electrode 201 and a plurality of ring-shaped electrodes 202 are attached to the distal end portion of the catheter shaft 200.

The catheter shaft 200 is formed of a hollow tube member and is made of a synthetic resin such as polyolefin, polyamide, polyether block amide, or polyurethane. The outer diameter of the catheter shaft 200 is usually 0.6 to 3.0 mm, and the inner diameter is usually 0.5 to 2.5 mm.
In FIG. 1, the length of the catheter shaft 200 is illustrated as being short, but actually, the length is several times to several tens of times longer than the length of the handle 100.
A lead wire connected to the tip electrode 201 and the ring electrode 202 is inserted through the lumen of the catheter shaft 200.

  The tip electrode 201 and the ring electrode 202 shown in FIG. 1 are made of a metal having good electrical conductivity, such as aluminum, copper, stainless steel, gold, or platinum. The outer diameters of the tip electrode 201 and the ring electrode 202 are not particularly limited, but are preferably approximately the same as the outer diameter of the catheter shaft 200.

  As shown in FIGS. 2, 3, and 5, the handle main body 10 constituting the handle 100 of the present embodiment is configured by combining a first handle member 11 and a second handle member 12 that are formed separately. Yes.

  The rotation operation unit of the handle 100 according to the present embodiment includes a rotating plate 20 (movable member) and an intermediate member 25 (fixed member).

  A rotating plate 20 that is a movable member of the rotation operation unit is configured by combining a first rotating member 21 and a second rotating member 22 that are formed in a disk shape having the same diameter. The rotary plate 20 is provided with a knob 23.

  The rotary plate 20 is disposed so as to be sandwiched between the first handle member 11 and the second handle member 12 constituting the handle body 10 via the O-ring 50 and the washer 55. The first handle member 11 and the second handle member 12) are mounted so as to be rotatable about a rotation axis (P) perpendicular to the longitudinal direction.

  The rotation plate 20 is connected to the base ends (proximal ends) of two operation wires (not shown). Each distal end (distal end) of the operation wire is connected to a leaf spring accommodated as a swinging member inside the distal end portion of the catheter shaft 200.

When the rotating plate 20 is rotated in the direction of the arrow A1 shown in FIG. 1, one of the operation wires is pulled, so that the distal end portion of the catheter shaft attached to the distal end side of the handle according to the embodiment 100 is moved in the direction of the arrow A. Bend (deflect).
On the other hand, when the rotating plate 20 is rotated in the direction of arrow B1 shown in FIG. 1, the other operation wire is pulled, so that the distal end portion of the catheter shaft attached to the distal end side of the handle 100 of this embodiment is moved to the arrow. Bend (deflect) in the B direction.
In addition, if the handle 100 of this embodiment is rotated around the central axis (Z) in the longitudinal direction of the handle body 10, the direction of the A direction or the B direction with respect to the handle can be freely set while being inserted into the body cavity. Can be set to

  Here, as a constituent material of the handle body 10 (the first handle member 11 and the second handle member 12) and the rotating plate 20 (the first rotating member 21 and the second rotating member 22), polycarbonate, ABS resin, acrylic resin, Examples thereof include synthetic resins such as polyolefin and polyoxymethylene.

As shown in FIGS. 2, 3, and 5, the adjustment pin 30 constituting the handle 100 of the present embodiment is formed by integrally forming a base portion 31, a body portion 32, and a male screw portion 33 (tip portion). .
The adjustment pin 30 is disposed so that its base 31 is fixed to the first handle member 11 so as not to rotate, and penetrates the rotary plate 20 along the rotation axis (P).

As shown in FIGS. 2, 3, and 5, the adjustment knob 40 constituting the handle 100 of the present embodiment is formed by integrally forming a knob 41, a disk part 42, and a female screw part 43.
The female screw portion 43 of the adjustment knob 40 can be screwed with the male screw portion 33 of the adjustment pin 30, and the screwing depth (screwing depth) between the female screw portion 43 of the adjustment knob 40 and the male screw portion 33 of the adjustment pin 30 is set. Accordingly, the distance between the first handle member 11 and the second handle member 12 changes.

  By changing this distance, the compressive force with respect to the O-ring 50 disposed between the first handle member 11 and the rotary plate 20 (first rotary member 21) changes, and the O-ring 50 applies the force to the rotary plate 20. Tightening force (operating force of the rotating plate) changes. Here, when the distance between the first handle member 11 and the second handle member 12 is reduced and the tightening force by the O-ring 50 is increased, the operation of the rotating plate 20 becomes heavy, and this distance is increased to increase the tightening force. When it is made smaller, the operation of the rotating plate 20 becomes lighter.

Here, the O-ring 50 is made of a material having excellent elasticity, for example, silicone rubber, nitrile rubber, fluorine rubber, or the like.
In addition, the washer 55 disposed between the second handle member 12 and the rotating plate 20 (second rotating member 22) is preferably made of a material having excellent sliding characteristics, and is made of, for example, a fluororesin.

As shown in FIGS. 2, 3, and 5, the intermediate member 25 that is a fixing member of the rotation operation unit is disposed so as to be sandwiched between the first rotating member 21 and the second rotating member 22 that constitute the rotating plate 20. Has been.
By arranging the intermediate member 25 between the first rotating member 21 and the second rotating member 22, the intermediate member 25 acts as a spacer, and between the first rotating member 21 and the second rotating member 22. A space for inserting a long part such as a tube (inner space of the rotating plate 20) can be secured.

  The intermediate member 25 is fixed so as not to rotate with respect to the handle body 10, and therefore, even if the rotating plate 20 (the first rotating member 21 and the second rotating member 22) is rotated with respect to the handle body 10. , It does not rotate in conjunction with this.

  Here, examples of the constituent material of the intermediate member 25 include synthetic resins such as fluororesin, polyolefin, and polyoxymethylene.

  As shown in FIGS. 3 to 5, a tube 70 inserted into the handle main body 10 extends along the central axis (Z) of the handle main body 10 in the intermediate member 25 constituting the rotation operation unit. A guide groove 251 and a guide groove 252 are formed.

  The guide groove 251 and the guide groove 252 formed in the intermediate member 25 are both U-shaped grooves extending in the longitudinal direction of the handle body 10, and the bottom surface 251S of the guide groove 251 and the bottom surface 252S of the guide groove 252 shown in FIG. Are located on the same straight line below the central axis (Z) by a distance corresponding to ½ of the outer diameter of the tube 70.

On the other hand, the adjustment pin 30 constituting the handle 100 is formed with a through hole 35 through which a tube 70 extending along the central axis (Z) of the handle body 10 can be inserted.
That is, the through hole 35 of the adjustment pin 30 is formed along the central axis (Z).

  As shown in FIG. 3, the tube 70 is disposed in a state supported by the guide groove 251 and the guide groove 252, and the tube 70 is inserted into the through hole 35 formed in the adjustment pin 30, thereby the tube 70. The extending direction of the tube 70 is restricted, so that the tube 70 can be extended along the central axis (Z).

  Since the intermediate member 25 and the adjustment pin 30 are both fixed to the handle body 10 so as not to rotate, the relative positions of the guide groove 251, the guide groove 252, and the through hole 35 with respect to the handle body 10, and these The extending direction (direction along the central axis (Z)) of the tube 70 regulated by the above does not change even if the rotating plate 20 is rotated.

As shown in FIG. 3, the bottom surface 251 </ b> S of the guide groove 251 and the bottom surface 252 </ b> S of the guide groove 252 are located on the central axis (Z) side with respect to the inner surface 21 </ b> S of the first rotating member 21.
Further, the through hole 35 formed in the adjustment pin 30 is located on the central axis (Z) side with respect to the inner surface 21S of the first rotating member 21 and the inner surface 22S of the second rotating member 22. That is, the hole diameter of the through hole 35 is set to be smaller than the separation distance between the inner surface 21S and the inner surface 22S.

Accordingly, the tube 70 that is supported by the guide groove 251 and the guide groove 252 and that is inserted through the through hole 35 formed in the adjustment pin 30 has the inner surface 21S of the first rotating member 21 and the second rotating member 22. It will be in the state spaced apart from any of the inner surfaces 22S.
As a result, during the rotation operation of the rotating plate 20 (the first rotating member 21 and the second rotating member 22), generation of abnormal noise and damage to the tube due to contact between the inner surface of the movable rotating member and the outer peripheral surface of the tube. (Abrasion) can be reliably prevented.

  When the diameter of the through hole formed in the adjustment pin is equal to or larger than the separation distance of the inner surface of the rotating member, the tube is bent or slack depending on the rigidity of the inserted tube (long component). This may cause contact with the inner surface of the movable rotating member, and may cause abnormal noise when the rotating plate 20 is rotated, or the tube may be damaged.

  Thus, the through-hole 35 formed in the adjustment pin 30 not only secures an insertion path for the tube 70 (elongated part) extending along the central axis (Z), but also inside the rotating member. It also acts as a support for supporting the tube 70 so as not to contact the surface.

The tube 70 that is a long component is not particularly limited, and examples thereof include a physiological saline supply tube and a lead wire protective tube in a catheter provided with an irrigation mechanism.
Moreover, the tube 70 which is a long component may be a catheter shaft 200 (multi-lumen tube), a sheath tube, or the like.

As shown in FIGS. 2 to 5, the intermediate member 25 has a shape (substantially annular shape) that matches the outer peripheral shape of the rotating plate 20 as a portion other than the guide grooves 251 and 252, and the outer peripheral wall of the rotation operation unit. 253 is formed.
That is, the intermediate member 25 is formed by integrally forming the guide groove 251, the guide groove 252, and the outer peripheral wall 253 of the rotation operation unit.

  As shown in FIG. 4, the outer peripheral wall 253 of the rotation operation unit has a shape that matches the outer peripheral shape of the rotating plate 20, that is, substantially the same as the rotating plate 20 (the first rotating member 21 and the second rotating member 22). It has a substantially annular shape (partial annular shape) having an outer diameter of.

According to the outer peripheral wall 253 of the rotation operation portion formed in the intermediate member 25, it is possible to prevent the operation wire from protruding when the rotation plate 20 is rotated.
The outer peripheral wall 253 (intermediate member 25) of the rotation operation unit is fixed to the handle body 10, and even if the rotary plate 20 is rotated, it does not rotate in conjunction with the rotation plate 20. The wall 253 does not prevent the tip deflection operation by the operation wire.

Moreover, since the guide groove (guide groove 251 and guide groove 252) that regulates the extending direction of the tube 70 and the outer peripheral wall 253 of the rotation operation unit are integrally formed as a component part of the intermediate member 25, The outer peripheral wall 253 of the rotation operation unit does not interfere with the tube 70 whose extension direction is restricted by the guide groove.
In addition, as shown in FIG. 7, when the outer peripheral wall of the rotating unit operation unit is formed as a component part of the rotating plate, by rotating the rotating plate, a long component extending along the central axis is formed. On the other hand, the outer peripheral wall interferes.

According to the handle 100 of the present embodiment, the tube 70 (long component) inserted into the handle body 10 from the distal end side extends along the central axis (Z) in the longitudinal direction of the handle body 10. be able to.
Moreover, the bottom surfaces 251S and 252S of the guide grooves 251 and 252 formed in the intermediate member 25 are positioned on the central axis (Z) side with respect to the inner surface 21S of the first rotating member 21, and along the central axis (Z). By setting the hole diameter of the through hole 35 formed in the adjustment pin 30 to be smaller than the distance between the inner surface 21S of the first rotating member 21 and the inner surface 22S of the second rotating member 22, the tube 70 can be extended along the central axis (Z) of the handle main body 10 without making contact with the inner surface 21S and the inner surface 22S. The problem of damage (abrasion) can be avoided.

As mentioned above, although embodiment of this invention was described, the handle | steering_wheel for catheter of this invention is not limited to these, A various change is possible.
For example, the “long component” that extends along the central axis in the longitudinal direction of the handle main body includes a lead wire such as an electrode in addition to a tube.
In the above-described embodiments, the catheter handle according to the present invention is applied to the electrode catheter. However, the catheter handle according to the present invention includes a guide catheter (guiding catheter), an angiographic catheter, and a sheath catheter. (Sheath introducer), microcatheter and the like can also be applied.

DESCRIPTION OF SYMBOLS 100 Handle 10 Handle main body 11 1st handle member 12 2nd handle member 20 Rotating plate 21 1st rotating member 22 2nd rotating member 23 Knob 25 Intermediate member 251 Guide groove 252 Guide groove 253 Outer peripheral wall 30 Adjustment pin 31 Base part 32 Body part 33 Male thread part 43 Female thread part 40 Adjustment knob 50 O-ring 55 Washer 70 Tube 200 Catheter shaft 201 Tip electrode 202 Ring-shaped electrode

Claims (8)

A handle attached to the proximal end of the catheter shaft,
A handle body formed by combining a first handle member and a second handle member;
It is disposed between the first handle member and the second handle member, and is attached to the handle body so as to be rotatable around a rotation axis perpendicular to the longitudinal direction thereof, and deflects the distal end of the catheter shaft. A rotating operation unit having a rotating plate to which a proximal end of an operation wire for connecting is connected;
An adjustment pin that is fixed to the first handle member so as not to rotate and is arranged to penetrate the rotating plate along the rotation axis of the rotating plate, and has an external thread portion at a tip thereof.
An adjustment knob having a female screw portion that is screwed with a male screw portion of the adjustment pin, and is rotatably attached to the second handle member;
An elastic member disposed between the handle body and the rotating plate so that the operating force of the rotating plate changes according to the screwing depth between the male screw portion of the adjusting pin and the female screw portion of the adjusting knob. And comprising:
The rotating operation unit is a rotating plate formed by combining a first rotating member and a second rotating member formed in a disk shape having the same diameter.
An intermediate member disposed between the first rotating member and the second rotating member and fixed to the handle body so as not to rotate;
In the intermediate member, a guide path for extending a long component inserted into the handle body from the distal end side along the central axis in the longitudinal direction of the handle body;
An outer peripheral wall of the rotation operation unit having a shape matching the outer peripheral shape of the rotating plate is integrally formed;
The catheter handle according to claim 1, wherein the adjustment pin is formed with a through-hole through which a long part extending along the central axis can be inserted.   The guide path is formed so that a long component extending along the central axis in the longitudinal direction of the handle body does not come into contact with either the first rotating member or the second rotating member. The catheter handle according to claim 1.   A through hole for the adjustment pin is formed so that a long component extending along the central axis in the longitudinal direction of the handle body does not come into contact with either the first rotating member or the second rotating member. The catheter handle according to claim 1 or 2, wherein the catheter handle is provided.   The catheter handle according to any one of claims 1 to 3, wherein the guide path in the intermediate member is a guide groove formed on a distal end side and a proximal end side of the intermediate member.   The catheter handle according to any one of claims 1 to 4, wherein the elongated part is a tube.   The catheter handle according to claim 5, wherein the tube is a physiological saline supply tube.   The catheter handle according to claim 5, wherein the tube is a sheath tube capable of a tip deflection operation.   The catheter handle according to claim 5, wherein the tube is a catheter shaft.

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