JP4822626B2 - Shunt inserter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shunt insertion tool that can easily and surely insert a shunt into a target tubular tissue when operating a tubular tissue of a living body.
[0002]
[Prior art]
For example, when performing coronary artery bypass surgery, when a portion of the side wall of the coronary artery that is to be anastomosed is incised, blood oozes out from the incision and obstructs the field of view, and smooth anastomosis cannot be performed. The problem arises. The shunt is an instrument for solving such a problem, and by inserting a shunt into the incision portion, the blood flow of the coronary artery is secured and the blood is prevented from leaching, thereby realizing a smooth anastomosis.
[0003]
As described above, when performing a surgical operation on a tubular tissue of a living body (typically, an anastomosis of a blood vessel), the shunt is inserted into the tubular tissue to ensure the flow of the body fluid and prevent the body fluid from leaching to the surgical site. In order to exert this function, the tube has a flexible tube, and has a closed portion that contacts and closes the inner wall of the tubular tissue at both outer ends of the tube. Has been.
[0004]
The operation of inserting a shunt into the coronary incision will be described with reference to FIG. First, after incising a required part (for example, thrombus generation site) in the coronary artery, the shunt 51 is sandwiched by tweezers 52 as shown in FIG. Then, it is inserted to the downstream side in the direction and up to approximately half the length, and then, as shown in FIG. 5B, the remaining portion that has not yet been inserted is folded into a square shape and then inserted upstream in the blood flow direction. In this case, the shunt 51 is made of a soft material equivalent to a blood vessel, has high elasticity, and is easy to return to its original shape when loosened by the tweezers 52 and is very difficult to handle. The work of inserting is a great stress. When the shunt 51 is placed at a predetermined position, the blood does not ooze out from the incision portion by the occlusion portion that is in contact with and occludes the inner wall of the blood vessel, and a smooth anastomosis can be realized. Further, the shunt 51 is pulled out just before the end of the target operation, for example, the anastomosis operation, to be removed from the insertion site, and then the final suture is performed.
[0005]
As described above, the work of inserting the shunt into the incised coronary artery is carried out by pinching the shunt with tweezers, but it is difficult to handle because the shunt is soft and highly elastic, and its shape is easy to return to its original shape. Doing a great deal of stress on the surgeon. Further, there are a hemostatic clip, a device for blowing blood by blowing carbon dioxide to secure a visual field, and a stabilizer around the incision. This stabilizer is an instrument for maintaining only the anastomosis site in a substantially stationary state because the coronary artery moving on the surface of the heart cannot be anastomosed. Due to the presence of these multiple instruments, space is limited and it is difficult to move the tweezers freely. This is also a factor that gives great stress to the surgeon.
[0006]
In the case of cardiac surgery, it is common to use an artificial heart-lung machine while the heart is stopped. In this case, instruments and shunts represented by a stabilizer are not necessary. However, the development of the technique makes it possible to perform an operation that does not impose a burden on the patient and does not stop the heart, and each device as described above is required.
[0007]
The technique disclosed in Japanese Patent Application Laid-Open No. 11-335 relates to a blood vessel anastomosis assist device, and when a shunt is inserted into a blood vessel, a flexible rod is inserted into the lumen of the shunt as a guide. First, the guide is inserted, and then the shunt is sandwiched between tweezers, inserted by the above-described method, and then moved along the guide so that the shunt can be smoothly inserted.
[0008]
[Problems to be solved by the invention]
However, even the above technique is not perfect and has some problems to be solved. That is, since the rod serving as the guide penetrates the lumen of the shunt, in order to insert the shunt into the blood vessel, it is necessary to move the shunt directly with tweezers and Since a plurality of instruments are intermingled in the vicinity of the formed incision part and the surrounding space is limited, the problem remains that the tweezers cannot be freely moved by hand. In this work, since the shunt is soft and the waist is weak, the shunt cannot be pushed into the blood vessel smoothly with the tweezers. For this reason, the shunt must be folded into a square shape and inserted. Moreover, there is a problem that it is easy to return to the original state even if it is bent due to the elasticity of the shunt, and maintaining the bent state gives a great stress to the operator.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide a shunt insertion tool which can be smoothly and reliably operated without being directly pinched with tweezers and without being bent when the shunt is inserted into a tubular tissue of a living body. .
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a shunt insertion tool according to the present invention is a shunt insertion tool for inserting a shunt that is temporarily inserted when a living tubular tissue is operated to ensure the flow of body fluid into the tubular tissue. An introduction portion that introduces a thread attached to the shunt and has a groove for drawing the yarn to the outside and is introduced into a tubular tissue of a living body; and a shunt that is formed continuously from the introduction portion. The holding unit is configured to be held linearly and movably, and an extruding member that moves the shunt held by the holding unit toward the introduction unit and pushes it into the tubular tissue.
[0011]
In the above shunt insertion tool, the shunt is held inside the holding portion, and the shunt is held by introducing the introduction portion formed continuously to the holding portion into the tubular tissue of the living body and operating the pushing member. It can be moved from the part to the introduction part and pushed into the tubular tissue. For this reason, the shunt held by the holding part can be inserted into the incision part of the tubular tissue without using tweezers and without bending.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a shunt insertion tool according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating the configuration of the shunt insertion tool according to the first embodiment. FIG. 2 is a diagram illustrating the configuration of a member including a shunt introduction portion and a holding portion. FIG. 3 is a view for explaining the configuration of the pushing member and the main body portion. FIG. 4 is a diagram illustrating an example of a shunt. FIG. 5 is a diagram illustrating the configuration of the shunt insertion tool according to the second embodiment. FIG. 6 is a diagram illustrating the configuration of the shunt insertion tool according to the third embodiment. FIG. 7 is a view for explaining the procedure for inserting the shunt.
[0013]
The shunt insertion tool according to the present invention is used when performing a bypass operation in which a side wall of a biological tubular tissue (hereinafter simply referred to as “blood vessel”) such as a blood vessel or a lymphatic vessel is cut and another blood vessel is connected to the cut portion. The shunt can be easily and reliably inserted into the incision.
[0014]
Prior to the description of the shunt insertion tool according to the present embodiment, an example of the shunt will be described with reference to FIG. The shunt 1 shown in the figure is inserted primarily into the blood vessel from an incision formed in the side wall of the blood vessel, ensuring blood flow and preventing blood from leaching from the incision.
[0015]
The shunt 1 is narrower and more flexible than the inner diameter of the blood vessel to be inserted, and has an outer diameter substantially equal to the inner diameter of the blood vessel to be inserted formed on the outer periphery of both ends of the tube portion 1a. The ring-shaped closed portion 1b, a take-out thread 1c bound to the tube portion 1a between the close-up portions 1b, and a handle 1d attached to the end of the take-out thread 1c are configured.
[0016]
In the shunt 1 configured as described above, the occlusion portion 1b comes into contact with the inner wall surface of the blood vessel when it is inserted into the blood vessel and is closed on both sides of the incision portion formed in the blood vessel, and the tube portion 1a is closed. It is possible to secure blood flow by conducting both sides. Further, when the shunt 1 is inserted into the blood vessel, the take-out thread 1c and the handle 1d are taken out of the blood vessel, and the operator pulls out the shunt 1 from the blood vessel by grasping and pulling the handle 1d just before the anastomosis is completed. Is possible. At this time, the tube portion 1a is bent into a "<" shape.
[0017]
Next, the configuration of the shunt insertion tool A according to the first embodiment will be described with reference to FIGS.
[0018]
In the figure, a shunt insertion tool A according to the present invention includes an introduction part 2 that is introduced into a blood vessel, a holding part 3 that is formed continuously with the introduction part 2 and holds the shunt 1 movably, and an operator. The pusher 4 is configured to move the shunt 1 held by the holding part 3 to the introduction part 2 side and push it into the blood vessel.
[0019]
The introduction part 2 and the holding part 3 are formed in the shape of a pipe having an inner diameter substantially equal to or slightly larger than the outer diameter of the closing part 1b of the shunt 1 in order to accommodate the shunt 1 therein. The pushing member 4 is formed in the shape of an elongated rod or wire so that the shunt 1 held by the holding portion 3 is pushed out from the insertion portion to the blood vessel.
[0020]
For this reason, the shunt insertion tool A has a pipe member 10 whose inner diameter is substantially equal to or slightly larger than the outer diameter of the shunt, and the introduction portion 2 is provided at the tip of the pipe member 10 (left side in the figure, the same applies hereinafter). The holding part 3 is formed continuously from the introduction part 2. Further, the rear end side of the pipe member 10 (the right side in the figure, the same applies hereinafter) is detachably attached to the main body 12 via the connection member 11, and passes through the pipe member 10, the connection member 11, and the main body 12 and is an extruded member. 4 is arranged. Further, an operation member 13 is attached to the end portion of the pushing member 4.
[0021]
The introduction part 2 is formed at the distal end of the pipe member 10, and when the shunt is inserted into the incision part formed on the side wall of the blood vessel, the introduction part 2 is inserted into the incision part of the blood vessel and formed inside the pipe member 10. And the inside of the blood vessel.
[0022]
The introduction part 2 is inserted into the incision part of the blood vessel. For this reason, the tip portion of the pipe member 10 that functions as the introduction portion 2 is formed in a curved surface so that a sharp edge is not formed.
[0023]
The holding part 3 is formed continuously with the introduction part 2 and has a function of holding the shunt 1 inside. For this reason, it is preferable that the inner diameter of the holding part 3 is substantially equal to or slightly larger than the outer diameter of the closing part 1 b of the shunt 1. Accordingly, a plurality of types of holding units 3 are prepared according to the size of the shunt 1 to be used. Although the size of the shunt 1 is not particularly limited, for example, a length of 1.2 mm to 3.0 mm and an outer diameter of about 1.25 mm to 4.0 mm are desirable. By forming the holding portion 3 with such an inner diameter, the shunt 1 can be self-held when the shunt 1 is inserted.
[0024]
While the shunt 1 is held by the holding unit 3, the take-out thread 1 c attached to the shunt 1 is drawn out of the holding unit 3. The drawing form of the take-out yarn 1c from the holding portion 3 is not particularly limited, and the take-out yarn 1c may be pulled out from the introduction portion 2 when the shunt 1 is held by the holding portion 3.
[0025]
However, in this embodiment, a groove 10a is formed on the side wall of the pipe member 10 from the tip portion corresponding to the introduction portion 2 to the portion corresponding to the holding portion 3, and the take-out thread 1c is introduced into the groove 10a. The groove 10a may be at least one in the pipe member 10.
[0026]
The pipe member 10 in which the introduction part 2 and the holding part 3 are formed has a rear end 10b inserted into a hole 11a formed in the connection member 11, and is fixed by means such as adhesion or screwing.
[0027]
The length of the pipe member 10 is not particularly limited, and does not adversely affect the operation of the blood vessel incision where a plurality of instruments intersect, and can be easily operated while visually recognizing the incision. It is preferable that the length is about. That is, if the pipe member 10 is too short, the workability may be deteriorated, and if it is too long, the pipe member 10 may become unstable when introduced.
[0028]
The pipe member 10 is made of a material that can exhibit an appropriate strength and that does not adversely affect the living body. Examples of such a material include a stainless steel pipe and a tetrafluoroethylene resin (PTFE) pipe.
[0029]
The connection member 11 is for connecting the pipe member 10 to the main body 12, and a hole 10a for fixing the pipe member 10 is formed at one end portion, and the main body 12 is provided at the other end portion. A tapered hole 11b is formed to be fitted to and removed from the tapered projection 12a, and a hole 11c through which the pushing member 4 is inserted is formed at the center.
[0030]
Note that the connecting member 11 and the main body 12 are required to have a function of being surely integrated with each other and easily detachable. For this reason, in this embodiment, the hole 11b and the projection 12a are formed in a tapered shape and are attached by fitting (press-fitting), and can be detached by pulling out one of them. In this case, it is preferable that at least one is made of a material that can exhibit appropriate elasticity. For example, when the connecting member 11 is formed of a synthetic resin and the main body 12 is formed of a metal, the hole 11b can be fitted into the protrusion 12a, so that reliable integration can be achieved. The same effect can be expected when both the connecting member 11 and the main body 12 are molded products of synthetic resin.
[0031]
As described above, the pipe member 10 and the connection member 11 are integrated members, and are configured to be detachable from the main body 12 through the holes 11b and the protrusions 12a. In this way, by configuring the pipe member 10 so as to be attachable to and detachable from the main body 12, it is possible to select and use the optimum pipe member 10 according to the size of the shunt 1 to be used. When the pipe member 10 is selectively attached to the main body 12, the connection member 11 and the main body 12 are not necessarily configured to be detachable, and the pipe member 10 and the connection member 11 may be configured to be detachable. Furthermore, the connecting member 11 and the main body 12, and the pipe member 10 and the connecting member 11 may be configured to be detachable.
[0032]
However, in the shunt insertion tool, the pipe member and the main body do not necessarily need to be separable, and even if both are integrated, the shunt can be held and can be smoothly introduced into the blood vessel. As long as it satisfies the function of moving the shunt and inserting it into the blood vessel. In this case, when the size of the shunt is changed, it is necessary to change the shunt insertion tool. In other words, the shunt and the shunt inserter are used as a pair.
[0033]
That is, the simplest shunt insertion tool is configured by inserting the pushing member 4 through the pipe member 10 provided with the introduction portion 2 and the holding portion 3. Even such a shunt insertion tool having a shape can be used effectively.
[0034]
The main body 12 is for the operator to hold the shunt insertion tool A when inserting the shunt 1 into the incision portion of the blood vessel, and a protrusion 12a for detachably attaching the pipe member 10 is formed on the distal end side, and the operation member is provided inside. A sliding portion 12b for accommodating 13 so as to slide along the axial direction is formed.
[0035]
In particular, the external shape of the main body 12 is set in consideration of the ease of holding by the operator and / or the ease of operation of the operation member 13, and as shown in each embodiment to be described later, It is not set, but some shapes are set.
[0036]
In the present embodiment, a ring member 14 for inserting a finger is provided on the outer peripheral rear end side of the main body 12, and the shunt insertion tool A is securely held by the operator inserting the finger into the ring member 14. Configured to get. That is, when the shunt 1 is inserted into the blood vessel, the surgeon can insert the index finger and the middle finger into the ring member 14 of the main body 12 and press the operation portion 13 with the thumb.
[0037]
The pushing member 4 is slidably accommodated through the pipe member 10, the connecting member 11, and the main body 12, and energizes the shunt 1 held by the holding portion 3 as the operating portion 13 is pushed. It has a function of being moved to the second side and inserted into the incision portion of the blood vessel from the insertion portion 2. For this reason, the extrusion member 4 is comprised by the wire which wound the thin line. As such a material, there is stainless steel. In this embodiment, a rod made of a Ni-Ti alloy is subjected to a linear shape memory treatment and used in a superelastic range.
[0038]
An abutting member 4a is attached to the front end side of the extruding member 4 that abuts against the shunt 1 so as to be surely abutted against the end surface of the tube portion 1a of the shunt 1, and an operation member 13 is attached to the rear end side. ing. The abutting member 4 a is formed in a cup shape having an outer diameter larger than the outer diameter of the intermediate portion 1 a of the shunt 1 and smaller than the outer diameter of the closing portion 1 b and having an inner diameter substantially equal to the outer diameter of the pushing member 4. ing. And it is possible to contact | abut to the end surface of the intermediate part 1a of the shunt 1 irrespective of the thickness of this extrusion member 4 by being engage | inserted by the front-end | tip of the extrusion member 4. FIG.
[0039]
An operation member 13 is attached to the rear end side of the pushing member 4. The attachment method of the operation member 13 to the push member 4 is not particularly limited, and the operation member 13 can be attached by inserting the rear end of the push member 4 into the hole 13a formed in the operation member 13 and screwing or bonding. It is. That is, when the extrusion member 4 is inserted from the front end side of the main body 12 and the end portion is exposed to the rear end side of the main body 12, the end portion is fitted into the hole 13a of the operation member 13 and fixed. 4 and the operation member 13 are integrated.
[0040]
The operation member 13 is operated to push when the shunt 1 held by the holding unit 3 is inserted into the blood vessel. Therefore, the operation member 13 is formed assuming a shape that is most easily operated by the operator. In this embodiment, the operation member 13 is formed in a piston shape with a flange-like operation portion 13b provided at the rear end portion so that the operator can easily operate.
[0041]
Next, a procedure for inserting the shunt 1 into the incision using the shunt insertion tool A configured as described above will be described with reference to FIG. Prior to the blood vessel anastomosis, the optimum shunt 1 and the pipe member 10 corresponding to the shunt 1 are selected, the shunt 1 is held by the holding portion 3 of the selected pipe member 10, and the take-out thread 1c is moved from the groove 10a to the outside. Has been pulled out.
[0042]
The surgeon operates with the finger inserted into the ring member 14 of the main body 12 and introduces the introduction part 2 from the incision part of the blood vessel into the blood vessel as shown in FIG. When the operation portion 13b of the operation member 13 is pushed in this state, the pusher member 4 moves along with this operation, and the shunt 1 held by the holding portion 3 is inserted into the blood vessel from the introduction portion 2. At this time, the shunt 1 is inserted to the distal side of the blood vessel over substantially the entire length, and in this state, the function of closing the incision is not exhibited.
[0043]
After the shunt 1 is inserted into the peripheral side of the blood vessel, the shunt insertion tool A is pulled out, and the shunt 1 is left inside the blood vessel as shown in FIG. Next, the handle 1d is gripped and pulled toward the central side, thereby moving the shunt 1 toward the central side and disposing the pair of closed portions 1b on both sides of the incision as shown in FIG.
[0044]
As a result, it is possible to ensure blood flow at the incision, and the central side and the distal side of the incision are blocked by the occlusion 1b of the shunt 1, thereby preventing blood seepage from the incision. It is possible. Then, immediately before the intended anastomosis is completed, the take-out thread 1c is pulled to remove the shunt 1 that has been inserted into the blood vessel.
[0045]
As described above, when the shunt 1 is inserted into the blood vessel, the shunt 1 is not directly sandwiched and operated by tweezers, and instruments are not mixed around the incision portion in the blood vessel. In addition, the introduction portion 2 can be introduced into the incision portion to serve as a guide, and the shunt can be reliably inserted with a simple operation.
[0046]
Next, the configuration of the shunt insertion tool B according to the second embodiment will be described with reference to FIG. In the figure, the same parts and parts having the same functions as those of the first embodiment are designated by the same reference numerals and the description thereof is omitted.
[0047]
The shunt insertion tool B according to the present embodiment has the same basic configuration as the shunt insertion tool A described above. As shown in the figure, a spring 15 is inserted into the sliding portion 12b of the main body 12 constituting the shunt insertion tool B. The spring 15 has a function of urging the pushing member 4 toward the rear end side. When the operator pushes the operating member 13 when inserting the shunt 1 into the blood vessel, the distal end of the operating member 13 is pressed. A reaction force is applied to the operation direction in contact with the surface.
[0048]
For this reason, when performing the operation of inserting the shunt 1 into the blood vessel, it is possible to cause a slight reaction force to act on the surgeon with the movement of the push-out member 4, and the amount of movement of the shunt 1 can be finely adjusted. Smooth and reliable insertion can be realized.
[0049]
Next, the configuration of the shunt insertion tool C according to the third embodiment will be described with reference to FIG. In the figure, the same parts and parts having the same functions as those of the previous embodiments are designated by the same reference numerals, and the description thereof is omitted.
[0050]
In the figure, a refracting portion 10c refracted at a predetermined angle is formed on the tip side of the pipe member 10 constituting the shunt insertion tool C. The refracting portion 10c is formed on the rear end side with respect to the introducing portion 2 and the holding portion 3, and is configured to hold the shunt 1 in a straight state without being refracted.
[0051]
The refracting portion 10c is intended to make the introduction portion 2 and the holding portion 3 easily visible to the operator by refracting the pipe member 10, and the refraction angle at the refracting portion 10c is as described above. There is no particular limitation as long as the angle can achieve the object. For this reason, in this embodiment, the refraction angle of the refraction part 10c is set to about 45 degrees.
[0052]
Note that the pipe member 10 forming the refracting portion 10c is made of a relatively rigid material such as a stainless steel pipe, and the pipe member 10 is made of a flexible synthetic resin pipe. May be linear. Further, the refracting portion 10c formed on the pipe member 10 is not limited to one place, and may be formed at a plurality of places in order to achieve the purpose of improving the visibility of the operator.
[0053]
The connecting member 11 and the main body 12 are screwed together. That is, a female threaded portion 11d is formed on the rear end side of the connecting member 11, and a male threaded portion 12c is formed on the front end side of the main body 12, and they are integrated by screwing together to form a screwed state. It is configured to be able to leave when released.
[0054]
A stopper 12d is formed on the rear end side of the main body 12 instead of the ring member. The stopper 12d holds the outer periphery of the main body 12 with a finger, and the finger is put on the stopper 12d. It can be operated by pushing. In this embodiment, the ring member is removed from the main body 12 and a ring member 16 is formed on the rear end side of the operation member 13 so that the operator's thumb is placed on the ring member 16.
[0055]
In the shunt insertion tool C configured as described above, the operator operates the stopper 12d and the ring member 16 with fingers while holding the shunt 1 in the holding portion 3, and the introduction portion 2 is used as a blood vessel incision portion. Introduce. At this time, since the pipe member 10 is refracted, the introduction portion 2 and the holding portion 3 are easily visible, and the operability when the shunt 1 is inserted into the blood vessel is improved.
[0056]
Also, by connecting the connecting member 11 and the main body 12 with screws, the pipe member 10 can be reliably integrated with the main body 12 even if the material constituting these members is a metal or a synthetic resin.
[0057]
In the shunt insertion tools A to C configured as described above, when the shunt 1 held by the holding unit 3 is inserted into the blood vessel, the push member 4 is moved by pushing the operating member 13 to move the shunt 1. Since it is moved, the operation itself is simple, and the shunt 1 can be easily inserted into the blood vessel without making the operator feel uncomfortable.
[0058]
Further, by forming the groove 10a on the distal end side of the pipe member 10, when the shunt 1 is held by the holding portion 3, the take-out thread 1c attached to the shunt 1 can be pulled out along the groove 10a. In addition, the operation when the shunt 1 is inserted from the introduction part 2 into the holding part 3 can be easily performed.
[0059]
Further, by configuring the pipe member 10 and the main body 12 to be detachable via the connecting member 11, the pipe member 10 selected according to the size of the shunt 1 can be attached to the common main body 12 and the extrusion member 4. The degree of freedom when using the main body 12 can be improved.
[0060]
In addition, by forming the refracting portion 10c in the pipe member 10, it is possible to improve the visibility of the introduction portion 2 and the holding portion 3 by the operator, and the operation when inserting the shunt 1 into the blood vessel is made smoother. It becomes possible to carry out reliably.
[0061]
【The invention's effect】
As described above in detail, in the shunt insertion tool according to the present invention, the shunt is held in the holding part continuous to the introduction part, and the introduction part is introduced into the incision part formed on the side wall of the blood vessel to operate the pushing member. By doing so, the shunt held by the holding part can be moved to the introduction part and inserted into the blood vessel. At this time, since it is not necessary to perform an operation of bending the shunt into a square shape with tweezers, even if a plurality of instruments are intermingled with the incision portion and the space is limited, the shunt can be inserted smoothly and reliably. I can do it. For this reason, an operator's stress can be eliminated and fatigue can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a configuration of a shunt insertion tool according to a first embodiment.
FIG. 2 is a diagram illustrating a configuration of a member including a shunt introduction portion and a holding portion.
FIG. 3 is a diagram illustrating a configuration of an extrusion member and a main body portion.
FIG. 4 is a diagram illustrating an example of a shunt.
FIG. 5 is a diagram illustrating a configuration of a shunt insertion tool according to a second embodiment.
FIG. 6 is a diagram illustrating a configuration of a shunt insertion tool according to a third embodiment.
FIG. 7 is a diagram illustrating a procedure when a shunt is inserted.
FIG. 8 is a diagram illustrating a procedure when a conventional shunt is inserted.
[Explanation of symbols]
A to C shunt insertion tool 1 shunt 1a tube portion 1b closing portion 1c take-out thread 1d handle 2 introducing portion 3 holding portion 4 pushing member
10 Pipe member
10a groove
10b rear end
10c Refraction part
11 Connection member
11a-11c hole
11d Female thread
12 Body
12a protrusion
12b Sliding part
12c Male thread
12d stopper
13 Operation parts
13a hole
13b Operation unit
14 Ring member
15 Spring
16 Ring member

Claims (1)

A shunt insertion tool for inserting into a tubular tissue a shunt that is temporarily inserted when operating a tubular tissue of a living body to ensure the flow of bodily fluids, and that introduces a thread attached to the shunt and An introduction part having a groove to be drawn out and introduced into a tubular tissue of a living body, a holding part that is formed continuously with the introduction part , holds the shunt linearly inside, and is movably held; A shunt insertion tool comprising: an extruding member that moves the shunt held by the holding portion toward the introduction portion and pushes the shunt into the tubular tissue.

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