CN119302693B

CN119302693B - Surgical instrument for treating digestive tract fistula

Info

Publication number: CN119302693B
Application number: CN202411505713.3A
Authority: CN
Inventors: 潘飞; 孙刚; 彭丽华; 张晓梅; 杨云生; 孟科; 闫斌; 陈浚哲
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2024-10-25
Filing date: 2024-10-25
Publication date: 2025-05-27
Anticipated expiration: 2044-10-25
Also published as: CN119302693A

Abstract

The present invention relates to a surgical instrument for treating digestive tract fistula, comprising a main end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part; the main end control handle is located at one end of the connecting part, and the slave end clamping and pulling mechanism and the suturing mechanism are located at the other end of the connecting part; the slave end clamping and pulling mechanism is used to clamp the tissue around the fistula so that it is partially or completely merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue pulled together by the clamping and pulling mechanism, and the main end control handle is provided with an operating part, and the operating part is connected to the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping and pulling and penetrating suturing actions. The surgical instrument can perform clamping and suturing operations well, thereby completing the suturing operation of the digestive tract fistula in the cavity, with a small surgical incision, which can greatly reduce the risk of patients in the fistula suturing operation.

Description

Surgical instrument for treating digestive tract fistula

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a surgical instrument for treating digestive tract fistula.

Background

Despite the tremendous advances in surgical techniques and preoperative preparations made by modern medicine, gastrointestinal fistulae still occur.

Fistulae not only increase mortality, but also have adverse effects on long-term survival. Thus, fistula treatment remains a medical problem today, and traditional surgical procedures not only place a heavy economic burden on the patient and his home, but also present a significant surgical risk.

After infection and nutrition support are controlled, the patient with the gastrointestinal fistula has no factors affecting healing such as obstruction, specific lesions and the like, and has a certain self-healing rate (40% -60%). However, a long waiting period, typically three months, is required for primary drainage to definitive surgery, during which the patient may experience complications such as homeostasis imbalance, bleeding, infection, multiple organ dysfunction, and malnutrition.

Therefore, how to promote the rapid healing of digestive fistula and shorten the course of disease is a trend of the study of digestive fistula.

Disclosure of Invention

The present invention aims to provide a surgical instrument for treating digestive tract fistula, which overcomes the above-mentioned drawbacks by optimizing the design of the digestive tract fistula equipment.

The surgical instrument for treating the digestive tract fistula comprises a main end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part, wherein the main end control handle is positioned at one end of the connecting part, the slave end clamping and pulling mechanism and the suturing mechanism are positioned at the other end of the connecting part, the slave end clamping and pulling mechanism is used for clamping tissues around a fistula opening to enable the tissues to be partially or completely combined in a cavity, the suturing mechanism is used for penetrating and suturing the tissues pulled by the slave end clamping and pulling mechanism, and the main end control handle is provided with an operating part which is in transmission connection with the slave end clamping and pulling mechanism and the suturing mechanism through wiredrawing so as to operate the slave end clamping and pulling mechanism and the suturing mechanism to execute clamping, pulling and penetrating and suturing actions.

Optionally, the slave-end clamping and pulling mechanism comprises a first clamp, a second clamp and a third clamp, wherein the first clamp is positioned outside a first clamping edge of the third clamp, the second clamp is positioned outside a second clamping edge of the third clamp, the first clamp is used for clamping tissue at one side of the fistula, the second clamp is used for clamping tissue at the other side of the fistula, and the third clamp is used for combining part or all of the tissues at two sides of the fistula in the cavity.

Optionally, the first clip and the third clip share the first clamping edge, and the second clip and the third clip share the second clamping edge.

Optionally, the suturing mechanism comprises a rotating frame, a suturing device and a fourth clamp, wherein the suturing device is fixed on the rotating frame, the rotating frame can rotate relative to the slave-end clamping and pulling mechanism, the suturing device is provided with a pore canal for penetrating suture wires, a cutter for cutting the suture wires is arranged at the head end of the pore canal, the fourth clamp comprises the third clamp, the third clamp is positioned inside the fourth clamp, and the fourth clamp is used for bending the cut suture wires and closing the cut suture wires to tissues so as to fix the penetrated tissues together.

Optionally, the first clip, the second clip and the third clip are respectively provided with a plurality of tooth parts, corresponding tooth grooves are formed among the tooth parts, the stitching instrument can be in one-to-one correspondence with the tooth grooves when the rotating frame rotates, and the fourth clip is provided with a squeezing part corresponding to the tooth grooves at the inner side of the clamping part of the fourth clip so as to press and bend the cut stitching wire into a C shape through the squeezing part.

Optionally, the extruding part of the fourth clip is of a plate-shaped structure capable of passing through the tooth grooves, and the lateral projection of the extruding part is of a triangle with opposite vertex angles.

Optionally, an arc-shaped groove corresponding to the rotation range of the stitching instrument is arranged at the front end of the connecting part, so that a space for the stitching wire to swing back and forth along with the stitching instrument is formed.

Optionally, the main end control handle comprises a hollow track and a holder arranged at the tail part of the track, wherein a first pull rod, a second pull rod, a third pull rod and a fourth pull rod which are distributed at intervals are arranged on the track, the first pull rod is in transmission connection with the first clamp through a first wire drawing, the second pull rod is in transmission connection with the second clamp through a second wire drawing, the third pull rod is in transmission connection with the third clamp through a third wire drawing, the fourth pull rod is in transmission connection with the fourth clamp through a fourth wire drawing, and the first clamp, the second clamp, the third clamp and the fourth clamp can be driven to open and close by moving on the track.

Optionally, a fifth pull rod is arranged on the track and is in transmission connection with the cutter through a fifth wire drawing, a rotating frame control handle is arranged at the tail end of the track, and the rotating frame control handle is in transmission connection with the rotating frame through a sixth wire drawing.

Optionally, a locking mechanism is arranged between the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, the fifth pull rod and the track.

Optionally, the locking mechanism is including locating latch on the track lateral wall, the inside of first pull rod, second pull rod, third pull rod, fourth pull rod, fifth pull rod is equipped with the cardboard by the spring support, the cardboard includes joint portion and operating portion, joint portion can under the support of spring with latch looks joint, operating portion is used for exerting external force messenger joint portion overcome the effort of spring with the latch breaks away from mutually to the unblock.

Optionally, the track and the connecting part are provided with a supporting channel for passing the suture silk, the tail end of the track is provided with a suture silk push rod, and the suture silk push rod is used for driving the suture silk to advance and retreat in the supporting channel through pushing and pulling.

Optionally, the rotating frame control handle is nested in the suture filament pushing rod.

The surgical instrument for treating the digestive tract fistula, provided by the invention, is suitable for treating the endoscopic digestive tract fistula, and can well control the device implanted in the human body cavity to carry out clamping and suturing operation, so that the suturing operation on the digestive tract fistula is completed in the cavity, the size of the fistula is not strictly limited, the surgical wound is small, the treatment means is flexible, and the risk of a patient in the suturing operation of the fistula can be greatly reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of a surgical instrument for treating an alimentary canal fistula according to an embodiment of the present invention;

FIG. 2 is an isometric view of the surgical instrument of FIG. 1 for treating a fistula of the alimentary canal;

FIG. 3 is a schematic view of the structure of the slave clamping and pulling mechanism, the suturing mechanism and the connecting part (part);

FIG. 4 is an isometric view of the slave clamp pull mechanism, suturing mechanism and attachment portion (section) of FIG. 3;

FIG. 5 is a schematic view of the structure of the main end lever;

FIG. 6 is an isometric view of the main end lever of FIG. 5;

FIG. 7 is a view A-A of FIG. 5;

FIG. 8 is a simulated view of the end clamp pull mechanism and suturing mechanism in a human body lumen suturing a digestive tract fistula;

fig. 9 is a B-B view of fig. 8.

In the figure:

10-main end control handle, 11-first pull rod, 12-second pull rod, 13-third pull rod, 14-fourth pull rod, 15-fifth pull rod, 16-rotating frame control handle, 17-suture thread push rod, 18-track, 181-latch, 19-holder, 20-clamping and pulling mechanism from end, 21-first clamp, 22-second clamp, 23-third clamp, 24-cantilever arm, 30-suture mechanism, 31-rotating frame, 32-suture device, 321-pore canal, 322-cutter, 34-fourth clamp, 341-extrusion part, 40-connecting part, 41-arc groove, 50-suture thread, 61-first thread, 62-second thread, 63-third thread, 64-fourth thread, 65-fifth thread, 66-sixth thread, 70-spring, 80-clamp, 81-clamping part, 82-operation part, 90-fistulae, 100-cavity canal.

Detailed Description

In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

In this document, terms "upper, lower, inner, outer", etc. are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may vary depending on the drawings, and thus, it is not to be construed as an absolute limitation of the scope of protection, and relational terms such as "first" and "second" etc. are used solely to distinguish one element from another having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of an overall structure of a surgical instrument for treating a fistula according to an embodiment of the invention, and fig. 2 is an axial side view of the surgical instrument for treating a fistula shown in fig. 1.

As shown in the figure, in one embodiment, the surgical instrument for treating digestive tract fistula provided by the invention mainly comprises a main end control handle 10, a slave end clamping and pulling mechanism 20, a suturing mechanism 30, a connecting part 40 and the like.

The connecting part 40 is in a cylindrical shape with a certain length, a channel for a wire drawing and the like to pass through is arranged in the connecting part 40, the main end control handle 10 is positioned at the rear end of the connecting part 40, the slave end clamping and pulling mechanism 20 and the stitching mechanism 30 are positioned at the front end of the connecting part 40, the slave end clamping and pulling mechanism 20 is used for clamping tissues around a fistula opening to enable the tissues to be combined in the cavity or the whole, the stitching mechanism 30 is used for carrying out penetrating stitching on the tissues pulled together by the slave end clamping and pulling mechanism 20, the main end control handle 10 is provided with an operation part, and the operation part is in transmission connection with the slave end clamping and pulling mechanism 20 and the stitching mechanism 30 through the wire drawing.

Thus, the doctor can perform the clamping and pulling operation of the slave-end clamping and pulling mechanism 20 and the penetrating suture operation of the suture mechanism 30 by the operation unit, thereby completing suturing of the stoma.

Referring to fig. 3 and 4, fig. 3 is a schematic diagram of the structure of the slave clamp and pull mechanism, the suture mechanism and the connection part (part), and fig. 4 is an axial side view of the slave clamp and pull mechanism, the suture mechanism and the connection part (part) shown in fig. 3.

As shown in the drawing, the slave end clamping and pulling mechanism 20 is provided with a cantilever arm 24 extending forward from the connecting portion, the cantilever arm 24 is near the edge position of the front end of the connecting portion 40, the front end of the cantilever arm 24 is provided with three clamps, namely a first clamp 21, a second clamp 22 and a third clamp 23, respectively, the first clamp 21 is positioned outside the first clamping edge of the third clamp 23 and is attached to the third clamp 23 so as to share the first clamping edge with the third clamp 23, and the second clamp 22 is positioned outside the second clamping edge of the third clamp 23 and is attached to the third clamp 23 so as to share the second clamping edge with the third clamp 23.

When the fistula suture device is used, the first clamp 21 is used for clamping tissues at one side of a fistula, the second clamp 22 is used for clamping tissues at the other side of the fistula, the third clamp 23 is used for driving the first clamp 21 and the second clamp 22 to be close to each other towards the middle, so that part or all of the tissues at the two sides of the fistula clamped by the first clamp 21 and the second clamp 22 can be combined in a cavity channel, and the fistula suture device is ready for next suturing.

The suturing mechanism 30 mainly comprises a rotating frame 31, a suturing device 32, a fourth clamp 34 and the like, the rotating frame 31 extends to the opposite edges along the radial direction from the root of the cantilever arm 24, the suturing device 32 is fixed on the rotating frame 31, the rotating frame 31 is rotatably arranged at the front end of the connecting part 40 and can rotate relative to the end clamping and pulling mechanism 20, a hole 321 for penetrating the suturing thread 50 is formed in the suturing device 32, a cutter 322 for cutting the suturing thread 50 is arranged at the head end of the hole 321, the fourth clamp 34 Bao Nadi is three clamps 23, the third clamp 23 is arranged in the fourth clamp 34, the suturing thread 50 can be made of medical metal and has certain strength and flexibility, and the fourth clamp 34 is used for bending the cut suturing thread 50 to close to tissues so as to fix the penetrated tissues together.

Specifically, the clamping edges of the first clamp 21, the second clamp 22 and the third clamp 23 are saw-tooth-shaped, a plurality of teeth are respectively arranged, corresponding tooth grooves are formed between the teeth, when the rotating frame 31 rotates, the stitching device 32 can be in one-to-one correspondence with the tooth grooves so as to enable the stitching wires 50 to penetrate through the clamped and pulled tissue along the tooth grooves, the pressing part 341 corresponding to the tooth grooves is arranged on the inner side of the clamping part of the fourth clamp 34, in the embodiment, the pressing part 341 of the fourth clamp 34 is of a plate-shaped structure capable of penetrating through the tooth grooves, the lateral projection of the pressing part 341 is of a triangle with opposite vertex angles, and when the fourth clamp 34 is gradually folded, the cut stitching wires 50 can be bent into a C shape from two ends through the pressing part 341, so that the penetrated tissue is fixed together.

Considering that when the rotating frame 31 rotates, the suture filament 50 in the suture device 32 swings along with the rotating frame, in order to prevent the rotating frame 31 from shearing the suture filament 50, the front end of the connecting part 40 is provided with an arc groove 41, the center of the arc groove 41 coincides with the center of the rotating frame 31, and the arc length of the arc groove is adapted to the rotating range of the suture device 32, so that a space for the suture filament 50 to swing back and forth is formed, and the suture filament 50 is not broken due to rotation.

Referring to fig. 5, 6 and 7, fig. 5 is a schematic structural view of the main end lever, fig. 6 is an axial side view of the main end lever shown in fig. 5, and fig. 7 is A-A view of fig. 5.

As shown in the figure, the main control handle 10 is mainly used for doctors to operate, and is provided with a hollow track 18 and a holder 19 arranged at the tail of the track, wherein the track 18 is provided with a first pull rod 11, a second pull rod 12, a third pull rod 13, a fourth pull rod 14 and a fifth pull rod 15 which are distributed at intervals.

The first pull rod 11 is in transmission connection with the first clamp 21 through the first wire drawing 61, the first clamp 21 can be closed through the first pull rod 11 pulling the first wire drawing 61, the first clamp 21 can be opened through loosening the first pull rod 11, the second pull rod 12 is in transmission connection with the second clamp 22 through the second wire drawing 62, the second clamp 22 can be closed through the second wire drawing 62 pulled by the second pull rod 12, the second clamp 22 can be opened through loosening the second pull rod 12, the third pull rod 13 is in transmission connection with the third clamp 23 through the third wire drawing 63, the third clamp 23 can be closed through loosening the third wire drawing 63 by pulling the third pull rod 13, the third clamp 23 can be opened through loosening the third pull rod 13, the fourth clamp 34 can be closed through loosening the fourth pull rod 14, and the fourth clamp 34 can be opened through loosening the fourth wire drawing 64 by pulling the fourth wire drawing 64.

That is, the first, second, third, and fourth tie bars 11, 12, 13, and 14 respectively move on the rail 18 to open and close the first, second, third, and fourth clips 21, 22, 23, and 34.

The fifth pull rod 15 is in transmission connection with the cutter 322 through a fifth wire drawing 65, and the cutter 322 is driven by the fifth pull rod 15 to cut off the suture thread 50 penetrating through tissues through the movement of the cutter 322 on the track 18.

The tail end of the track 18 is provided with a rotating frame control handle 16, the rotating frame control handle 16 is in transmission connection with the rotating frame 31 through a sixth wire drawing 66, and the rotating frame 31 can be driven to rotate through the rotating frame control handle 16, so that the position of the stitching instrument 32 is changed, and after the stitching instrument 32 finishes stitching once, the stitching instrument moves to the next position of the fistula opening to continue stitching.

In order to ensure that the clips can be kept in a closed state after being closed without manual maintenance, locking mechanisms are respectively arranged between the first pull rod 11, the second pull rod 12, the third pull rod 13, the fourth pull rod 14, the fifth pull rod 15 and the track 18.

In this embodiment, the locking mechanism includes a latch 181 disposed on a side wall of the track 18, where the latch 181 is in a inverted tooth shape, the first pull rod 11, the second pull rod 12, the third pull rod 13, the fourth pull rod 14, and the fifth pull rod 15 are internally provided with a clamping plate 80 supported by the spring 70, the clamping plate 80 is generally in an "L" shape, and has a clamping portion 81 and an operating portion 82, the clamping portion 81 can be clamped with the latch 181 under the support of the spring 70, and the operating portion 82 is used to apply an external force to disengage the clamping portion 81 from the latch 181 against the acting force of the spring 70, thereby releasing the locking.

When the novel hand-operated push rod locking device is used, when each pull rod is pushed down in the hand direction, the clamping plate 80 on the pull rod is clamped with the clamping teeth 181, so that the pull rod does not move in the other direction, the locking purpose is achieved, when the locking is required to be released, the clamping plate 80 can be separated from the clamping teeth 181 only by pulling the clamping plate 80 outwards with fingers, and under the action of the springs of the head-end instruments such as the first clamp 21, the second clamp 22, the third clamp 23 and the fourth clamp 34, the pull rod moves in the opposite direction, and the original state is restored.

The suture filament 50 extends through the whole set of instrument in the axial direction, the track 18 and the connection 40 are provided with a support channel for the suture filament 50, the support channel has a certain rigidity, the tail end of the track 18 is provided with a suture filament pushing rod 17, the rotating frame control handle 16 is nested in the suture filament pushing rod 17, and when the suture filament pushing rod 17 is pushed, the suture filament 50 extends outwards from the front end of the suture instrument 32, so that the tissue which is clamped and pulled together is penetrated.

Referring to fig. 8 and 9, fig. 8 is a simulation diagram of the end clamping and pulling mechanism and the suturing mechanism in the human body cavity for suturing the digestive tract fistula, and fig. 9 is a B-B view of fig. 8.

After the surgical instrument is delivered along the tract 100 near the stoma 90, the tissue at the stoma is first brushed by a cellular brush to remove the dead tissue, the first and second clamps 21, 22 are moved across the stoma 90, the first pull rod 11 is then controlled such that the first clamp 21 clamps the tissue on one side of the stoma 90, the second clamp 21 performs the same operation, and after completion, the third clamp 23 is closed.

In this way, the tissues at both sides of the stoma 90 are partially or completely clamped together, then the position of the stapler 32 is adjusted, the suture filament 50 is driven to advance by the suture filament pushing rod 17, so that the suture filament 50 passes through the clamped tissues along one tooth slot of the first clip 21, the second clip 22 and the third clip 23, then the fifth pull rod 15 is pulled, the cutter 322 cuts off the suture filament 50, the fourth pull rod 14 is pulled, the suture filament 50 remained in the tissues is pressed and bent by the fourth clip 34, then the rotating frame control handle 16 is pulled, and the same operation is continued in the next tooth slot until the stoma 90 is completely sutured.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of these, specific adjustments may be made according to actual needs, thereby obtaining different embodiments. For example, the first clip 11, the second clip 12, the third clip 13, the fourth clip 14 are designed in other suitable shapes, and so on. This is not illustrated here, as there are many possible implementations.

The surgical instrument is suitable for treating the endoscopic digestive tract fistula, after being implanted into the human body cavity, a doctor can conveniently control the endoscopic digestive tract fistula to carry out clamping and suturing operation, so that the suture operation on the digestive tract fistula is completed in the cavity, the surgical instrument is suitable for suturing fistulae with various sizes of large, medium and small, and the surgical wound is small, so that the surgical risk can be greatly reduced.

The surgical instrument for treating digestive tract fistula provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that the present invention may be modified and practiced without departing from the spirit of the present invention.

Claims

1. A surgical instrument for treating digestive tract fistula, characterized in that it comprises a main-end control handle, a slave-end clamping and pulling mechanism, a suturing mechanism and a connecting part; the main-end control handle is located at one end of the connecting part, and the slave-end clamping and pulling mechanism and the suturing mechanism are located at the other end of the connecting part; the slave-end clamping and pulling mechanism is used to clamp the tissue around the fistula so that it is partially or completely merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue pulled together by the slave-end clamping and pulling mechanism, the main-end control handle is provided with an operating part, and the operating part is transmission-connected with the slave-end clamping and pulling mechanism and the suturing mechanism through wire drawing to operate the slave-end clamping and pulling mechanism and the suturing mechanism to perform clamping, pulling and penetrating suturing actions; the slave-end clamping and pulling mechanism comprises a first clamp, a second clamp and a third clamp; the first clamp is located at on the outside of the first clamping edge of the third clamp, the second clamp is located on the outside of the second clamping edge of the third clamp, the first clamp is used to clamp the tissue on one side of the fistula, the second clamp is used to clamp the tissue on the other side of the fistula, and the third clamp is used to merge part or all of the tissue on both sides of the fistula in the cavity; the suturing mechanism includes a rotating frame, a suturing device and a fourth clamp, the suturing device is fixed to the rotating frame, the rotating frame can rotate relative to the clamping and pulling mechanism from the end, the suturing device is provided with a channel for passing the suture thread, and the head end of the channel is equipped with a cutter for cutting the suture thread; the fourth clamp encloses the third clamp, the third clamp is located inside the fourth clamp, and the fourth clamp is used to bend the cut suture thread and bring it closer to the tissue to fix the penetrated tissue together.

2. The surgical instrument for treating digestive tract fistula according to claim 1, characterized in that the first clamp and the third clamp share the first clamp edge, and the second clamp and the third clamp share the second clamp edge.

3. The surgical instrument for treating gastrointestinal fistula according to claim 1 is characterized in that the first clamp, the second clamp, and the third clamp are respectively provided with a plurality of teeth, and corresponding tooth grooves are formed between the teeth; when the rotating frame rotates, the suture device can correspond to each of the tooth grooves one by one; the fourth clamp is provided with an extrusion portion corresponding to each of the tooth grooves on the inner side of its clamping part, so that the cut suture thread can be bent into a "C" shape through the extrusion portion.

4. The surgical instrument for treating digestive tract fistula according to claim 3, characterized in that the extrusion portion of the fourth clamp is a plate-like structure that can pass through the alveolar groove, and its lateral projection is a triangle with apex angles facing each other.

5. The surgical instrument for treating digestive tract fistula according to claim 4, characterized in that an arcuate groove corresponding to the rotation range of the stapler is provided at the front end of the connecting portion to form a space for the suture thread to swing back and forth with the stapler.

6. The surgical instrument for treating gastrointestinal fistula according to claim 1 is characterized in that the main end control handle includes a hollow track and a gripper arranged at the tail of the track, and the track is provided with a first pull rod, a second pull rod, a third pull rod, and a fourth pull rod which are spaced apart; the first pull rod is transmission connected to the first clamp via a first wire, the second pull rod is transmission connected to the second clamp via a second wire, the third pull rod is transmission connected to the third clamp via a third wire, and the fourth pull rod is transmission connected to the fourth clamp via a fourth wire, and the first pull rod, the second pull rod, the third pull rod, and the fourth pull rod can drive the first clamp, the second clamp, the third clamp, and the fourth clamp to open and close by moving on the track.

7. The surgical instrument for treating gastrointestinal fistula according to claim 6 is characterized in that a fifth pull rod is provided on the track, and the fifth pull rod is transmission connected to the cutter through a fifth wire; a rotating frame control handle is provided at the end of the track, and the rotating frame control handle is transmission connected to the rotating frame through a sixth wire.

8. The surgical instrument for treating digestive tract fistula according to claim 7, characterized in that a locking mechanism is provided between the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, the fifth pull rod and the track.

9. The surgical instrument for treating gastrointestinal fistula according to claim 8 is characterized in that the locking mechanism includes a latching tooth arranged on the side wall of the track, and a latching plate supported by a spring is arranged inside the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, and the fifth pull rod, and the latching plate includes a clamping part and an operating part, and the clamping part can be clamped with the latching tooth under the support of the spring, and the operating part is used to apply an external force to make the clamping part overcome the action force of the spring and disengage from the latching tooth, thereby releasing the lock.

10. The surgical instrument for treating gastrointestinal fistula according to claim 7, characterized in that the track and the connecting part are provided with a support channel for the passage of the suture wire, and a suture wire push rod is provided at the end of the track, and the suture wire push rod is used to drive the suture wire forward and backward in the support channel by pushing and pulling.

11 . The surgical instrument for treating digestive tract fistula according to claim 10 , wherein the rotating frame control handle is nested in the suture wire push rod.