Surgical instrument for treating digestive tract fistula

Abstract

The invention relates to a surgical instrument for treating digestive tract fistula. The surgical instrument comprises a master end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part, the master end control handle is located at one end of the connecting part, and the slave end clamping and pulling mechanism and the sewing mechanism are located at the other end of the connecting part; the slave end clamping and pulling mechanism is used for clamping tissues around the fistula, so that the tissues are partially or completely combined in the cavity; the suturing mechanism is used for conducting penetrating suturing on the tissue pulled by the clamping and pulling mechanism, the main end control handle is provided with an operation part, and the operation part is in transmission connection with the auxiliary end clamping and pulling mechanism and the suturing mechanism through a pull wire. And the slave end clamping and pulling mechanism and the suturing mechanism are operated to execute clamping, pulling and penetrating suturing actions. According to the surgical instrument, clamping and suturing operations can be well carried out, so that the suturing operation of digestive tract fistula is completed in a cavity, the surgical wound is small, and the risk of a patient in the fistula suturing operation can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, and in particular to a surgical instrument for treating digestive tract fistula. Background Art

[0002] Although modern medicine has made great progress in surgical techniques and preoperative preparation, gastrointestinal fistulas still occur from time to time.

[0003] Fistula not only increases mortality, but also has adverse effects on long-term survival. Therefore, the treatment of fistula is still a difficult problem in modern medicine. Traditional surgical treatment not only brings a heavy economic burden to patients and their families, but also has high surgical risks.

[0004] Patients with gastrointestinal fistulas can recover spontaneously (40% to 60%) after infection control and nutritional support, provided there are no obstructions, specific lesions, or other factors that affect healing. However, there is a long waiting period from initial drainage to definitive surgery, generally three months, during which patients may develop complications such as homeostasis imbalance, bleeding, infection, multiple organ dysfunction, and malnutrition.

[0005] Therefore, how to promote the rapid healing of gastrointestinal fistula and shorten the course of the disease is the trend of gastrointestinal fistula research. Summary of the invention

[0006] The purpose of the present invention is to provide a surgical instrument for treating digestive tract fistula, which overcomes the above-mentioned defects by optimizing the design of digestive tract fistula equipment.

[0007] To achieve the above-mentioned purpose, the surgical instrument for treating gastrointestinal fistula provided by the present invention 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 part or all of it is merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue drawn by the slave end clamping and pulling mechanism, and the main end control handle is provided with an operating part, which is transmission-connected to the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing, so as to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping and pulling and penetrating suturing actions.

[0008] Optionally, the end clamping and pulling mechanism includes a first clamp, a second clamp, and a third clamp; the first clamp is located 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.

[0009] Optionally, the first clamp and the third clamp share the first clamping edge, and the second clamp and the third clamp share the second clamping edge.

[0010] Optionally, the suturing mechanism includes a rotating frame, a stapler and a fourth clamp, the stapler is fixed to the rotating frame, the rotating frame can rotate relative to the end clamping and pulling mechanism, the stapler 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.

[0011] Optionally, 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 wire can be bent into a "C" shape through the extrusion portion.

[0012] Optionally, the pressing portion of the fourth clamp is a plate-like structure capable of passing through the tooth groove, and a lateral projection thereof is a triangle with apex angles facing each other.

[0013] Optionally, the front end of the connecting portion is provided with an arcuate groove corresponding to the rotation range of the suture device, so as to form a space for the suture thread to swing back and forth with the suture device.

[0014] Optionally, the main end control handle includes a hollow track and a holder arranged at the end 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 distributed at intervals; the first pull rod is transmission connected to the first clip through a first wire, the second pull rod is transmission connected to the second clip through a second wire, the third pull rod is transmission connected to the third clip through a third wire, and the fourth pull rod is transmission connected to the fourth clip through 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 clip, the second clip, the third clip, and the fourth clip to open and close by moving on the track.

[0015] Optionally, 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.

[0016] Optionally, 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.

[0017] Optionally, the locking mechanism includes a latching tooth arranged on the side wall of the track, and a latching plate supported by a spring is provided 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 latching portion and an operating portion, and the latching portion can be latched with the latching tooth under the support of the spring, and the operating portion is used to apply an external force to enable the latching portion to overcome the action of the spring and disengage from the latching tooth, thereby releasing the lock.

[0018] Optionally, the track and the connecting portion are provided with a support channel for the suture wire to pass through, 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 to move forward and backward in the support channel by pushing and pulling.

[0019] Optionally, the rotating frame control handle is nested in the suture wire push rod.

[0020] The surgical instrument for treating digestive tract fistula provided by the present invention is suitable for the treatment of digestive tract fistula under endoscopy, and can well control the device implanted in the human body cavity to perform clamping and suturing operations, thereby completing the suturing operation of the digestive tract fistula in the cavity, and has no strict restrictions on the size of the fistula opening. The surgical incision is small, the treatment means are flexible, and the risk of patients in the fistula opening suturing operation can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of a surgical instrument for treating digestive tract fistula provided by an embodiment of the present invention;

[0022] Figure 2 for Figure 1 An axonal view of a surgical instrument for treating a digestive tract fistula is shown;

[0023] Figure 3 It is a structural schematic diagram of the end clamping and pulling mechanism, the suturing mechanism and the connecting part (partial);

[0024] Figure 4 for Figure 3 An axonometric view of the end clamping and pulling mechanism, the suturing mechanism and the connecting portion (partial);

[0025] Figure 5 This is a schematic diagram of the structure of the main end control handle;

[0026] Figure 6 for Figure 5 an isometric view of the master end control handle shown;

[0027] Figure 7 for Figure 5 AA view;

[0028] Figure 8It is a simulation diagram of suturing a digestive tract fistula by clamping and pulling the closing mechanism from the end and the suturing mechanism being in the human body cavity;

[0029] Fig. 9 for Figure 8 BB view.

[0030] In the figure:

[0031] 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 wire push rod; 18-track; 181-grip; 19-holder; 20-slave end clamping and pulling mechanism; 21-first clamp; 22-second clamp; 23-third clamp; 24-cantilever arm; 30-suture mechanism; 31-rotating frame ; 32-suturing device; 321-hole; 322-cutter; 34-fourth clamp; 341-extrusion part; 40-connecting part; 41-arc groove; 50-suture wire; 61-first drawing wire; 62-second drawing wire; 63-third drawing wire; 64-fourth drawing wire; 65-fifth drawing wire; 66-sixth drawing wire; 70-spring; 80-clip plate; 81-clamping part; 82-operating part; 90-fistula; 100-cavity. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0034] Please refer to Figure 1 , Figure 2 , Figure 1 A schematic diagram of the overall structure of a surgical instrument for treating digestive tract fistula provided by an embodiment of the present invention; Figure 2 for Figure 1 An axonal view of the surgical instruments shown for treating gastrointestinal fistula.

[0035] As shown in the figure, in a specific embodiment, the surgical instrument for treating gastrointestinal fistula provided by the present invention is mainly composed of a main end control handle 10, a slave end clamping and pulling mechanism 20, a suturing mechanism 30 and a connecting part 40.

[0036] The connecting portion 40 is generally cylindrical in shape with a certain length, and is provided with a channel inside thereof for the following drawing components to pass through. The main end control handle 10 is located at the rear end of the connecting portion 40, and the slave end clamping and pulling mechanism 20 and the suturing mechanism 30 are located at the front end of the connecting portion 40; the slave end clamping and pulling mechanism 20 is used to clamp the tissue around the fistula so that part or all of it is merged in the cavity, and the suturing mechanism 30 is used to penetrate and suture the tissue pulled together by the slave end clamping and pulling mechanism 20. The main end control handle 10 is provided with an operating portion, and the operating portion is transmission-connected to the slave end clamping and pulling mechanism 20 and the suturing mechanism 30 through the drawing.

[0037] In this way, the doctor can make the end clamping and pulling mechanism 20 perform a clamping and pulling action through the operating part, and can make the suturing mechanism 30 perform a penetrating suturing action, thereby completing the suturing of the fistula.

[0038] Please refer to Figure 3 , Figure 4 , Figure 3 It is a structural schematic diagram of the end clamping and pulling mechanism, the suturing mechanism and the connecting part (partial); Figure 4 for Figure 3 An axonometric view of the end clamping and pulling mechanism, the suturing mechanism and the connecting part (partial) is shown.

[0039] As shown in the figure, the end clamping and pulling mechanism 20 is provided with a cantilever arm 24 extending forward from the connecting part, and the cantilever arm 24 is close to the edge position of the front end of the connecting part 40. There are three clamps at the front end of the cantilever arm 24, namely the first clamp 21, the second clamp 22 and the third clamp 23; the first clamp 21 is located on the outside of the first clamping edge of the third clamp 23, and it is attached to the third clamp 23 and shares the first clamping edge with the third clamp 23; the second clamp 22 is located on the outside of the second clamping edge of the third clamp 23, and it is attached to the third clamp 23 and shares the second clamping edge with the third clamp 23.

[0040] When in use, the first clamp 21 is used to clamp the tissue on one side of the fistula, the second clamp 22 is used to clamp the tissue on the other side of the fistula, and the third clamp 23 is used to drive the first clamp 21 and the second clamp 22 to move closer to the middle, so that part or all of the tissue on both sides of the fistula clamped by the first clamp 21 and the second clamp 22 can be merged in the cavity, preparing for the next step of suturing.

[0041] The suturing mechanism 30 is mainly composed of a rotating frame 31, a stapler 32 and a fourth clamp 34. The rotating frame 31 extends from the root of the cantilever arm 24 to the opposite edge in the radial direction. The stapler 32 is fixed to the rotating frame 31. The rotating frame 31 is rotatably mounted on the front end of the connecting portion 40 and can rotate relative to the clamping and pulling mechanism 20 from the end. A channel 321 for passing the suture thread 50 is provided inside the stapler 32, and a cutter 322 for cutting the suture thread 50 is installed at the head end of the channel 321; the fourth clamp 34 encloses the third clamp 23, and the third clamp 23 is located inside the fourth clamp 34. The suture thread 50 can be made of medical metal material with certain strength and flexibility. The fourth clamp 34 is used to bend the cut suture thread 50 and bring it closer to the tissue to fix the penetrated tissue together.

[0042] Specifically, the clamping edges of the first clamp 21, the second clamp 22, and the third clamp 23 are all serrated, and are respectively provided with a plurality of teeth, and corresponding tooth grooves are formed between the teeth; when the rotating frame 31 rotates, the suture device 32 can correspond to each tooth groove one by one, so that the suture thread 50 can penetrate the clamped and pulled tissue along the tooth groove; the fourth clamp 34 is provided with an extrusion portion 341 corresponding to each tooth groove on the inner side of its clamping portion. In this embodiment, the extrusion portion 341 of the fourth clamp 34 is a plate-like structure that can pass through the tooth groove, and its lateral projection is a triangle with opposite apex angles. When the fourth clamp 34 is gradually closed, the cut suture thread 50 can be bent from both ends into a "C" shape by the extrusion portion 341, thereby fixing the penetrated tissue together.

[0043] Considering that the suture thread 50 in the suture device 32 will swing along with the rotation of the rotating frame 31, in order to prevent the rotating frame 31 from shearing the suture thread 50, an arc groove 41 is provided at the front end of the connecting portion 40. The center of the arc groove 41 coincides with the center of the rotating frame 31, and the arc length thereof is adapted to the rotation range of the suture device 32, thereby forming a space for the suture thread 50 to swing back and forth, so that the suture thread 50 will not be broken due to rotation.

[0044] Please refer to Figure 5 , Figure 6 , Figure 7 , Figure 5 This is a schematic diagram of the structure of the main end control handle; Figure 6 for Figure 5 an isometric view of the master end control handle shown; Figure 7 for Figure 5 AA view of the .

[0045] As shown in the figure, the main end control handle 10 is mainly used for doctors to operate. It has a hollow track 18 and a gripper 19 arranged at the end of the track. 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 distributed at intervals.

[0046] The first pull rod 11 is transmission connected to the first clip 21 through the first draw wire 61. The first clip 21 can be closed by pulling the first draw wire 61 by the first pull rod 11, and the first clip 21 can be opened by loosening the first pull rod 11; similarly, the second pull rod 12 is transmission connected to the second clip 22 through the second draw wire 62. The second clip 22 can be closed by pulling the second draw wire 62 by the second pull rod 12, and the second clip 22 can be opened by loosening the second pull rod 12; the third pull rod 13 is transmission connected to the third clip 23 through the third draw wire 63. The third clip 23 can be closed by pulling the third draw wire 63 by the third pull rod 13, and the third clip 23 can be opened by loosening the third pull rod 13; the fourth pull rod 14 is transmission connected to the fourth clip 34 through the fourth draw wire 64. The fourth clip 34 can be closed by pulling the fourth draw wire 64 by the fourth pull rod 14, and the fourth clip 34 can be opened by loosening the fourth pull rod 14.

[0047] That is, the first pull rod 11 , the second pull rod 12 , the third pull rod 13 , and the fourth pull rod 14 respectively drive the first clamp 21 , the second clamp 22 , the third clamp 23 , and the fourth clamp 34 to open and close by moving on the track 18 .

[0048] The fifth pull rod 15 is in transmission connection with the cutter 322 via the fifth pull wire 65 . The fifth pull rod 15 drives the cutter 322 to cut the suture wire 50 that penetrates the tissue by moving on the track 18 .

[0049] A rotating frame control handle 16 is provided at the end of the track 18, and the rotating frame control handle 16 is transmission-connected to the rotating frame 31 via the sixth drawing wire 66. The rotating frame control handle 16 can drive the rotating frame 31 to rotate, thereby changing the position of the suture device 32, so that after the suture device 32 completes one suture, it moves to the next location of the fistula to continue suturing.

[0050] In order to ensure that each clip can remain closed after closing without manual maintenance, locking mechanisms are provided 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 .

[0051] In this embodiment, the locking mechanism includes a latching tooth 181 arranged on the side wall of the track 18, and the latching tooth 181 is in the shape of an inverted tooth. 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 provided with a latching plate 80 supported by a spring 70. The latching plate 80 is generally in an "L" shape and has a latching portion 81 and an operating portion 82. The latching portion 81 can be latched with the latching tooth 181 under the support of the spring 70, and the operating portion 82 is used to apply an external force to enable the latching portion 81 to overcome the force of the spring 70 and disengage from the latching tooth 181, thereby releasing the lock.

[0052] When in use, when each pull rod is pressed down in the direction of the hand, the clamping plate 80 thereon will be locked with the clamping tooth 181, so that the pull rod will not move in the other direction, thereby achieving the purpose of locking. When it is necessary to unlock, just pull the clamping plate 80 outward with your fingers to disengage the clamping plate 80 from the clamping tooth 181. Under the action of the springs of the head end instrument itself, 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 returns to its original state.

[0053] The suture thread 50 runs through the entire instrument in the axial direction. The track 18 and the connecting part 40 are provided with a support channel for the passage of the suture thread 50. The support channel has a certain rigidity. A suture thread push rod 17 is provided at the end of the track 18. The rotating frame control handle 16 is nested in the suture thread push rod 17. When the suture thread push rod 17 is pushed, the suture thread 50 will extend outward from the front end of the suture device 32, thereby penetrating the tissue that has been clamped and pulled together.

[0054] Please refer to Figure 8 , Fig. 9 , Figure 8 It is a simulation diagram of suturing a digestive tract fistula by clamping and pulling the closing mechanism from the end and the suturing mechanism being in the human body cavity; Fig. 9 for Figure 8 BB view.

[0055] When the surgical instrument is sent to the vicinity of the fistula opening 90 along the cavity 100, the tissue at the fistula opening is first scrubbed with a cell brush to remove dead tissue, and the first clamp 21 and the second clamp 22 are placed across the fistula opening 90. Then, the first pull rod 11 is controlled so that the first clamp 21 clamps the tissue on one side of the fistula opening 90. Similarly, the second clamp 21 performs the same operation. After completion, the third clamp 23 is closed.

[0056] In this way, part or all of the tissues on both sides of the fistula 90 are clamped together, and then the position of the suture device 32 is adjusted, and the suture thread 50 is driven forward by the suture thread push rod 17, so that the suture thread 50 passes through the clamped tissue along a tooth groove of the first clamp 21, the second clamp 22, and the third clamp 23, and then the fifth pull rod 15 is pulled to make the cutter 322 cut the suture thread 50, and the fourth pull rod 14 is pulled to make the fourth clamp 34 press and bend the suture thread 50 retained in the tissue, and then the rotating frame control handle 16 is pulled to continue the same operation at the next tooth groove until the fistula 90 is completely sutured.

[0057] The above embodiments are only preferred solutions of the present invention and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the first clip 11, the second clip 12, the third clip 13, and the fourth clip 14 can be designed into other suitable shapes, etc. Since there are many possible implementation methods, they will not be described one by one here.

[0058] This surgical instrument is suitable for the treatment of intraendoscopic gastrointestinal fistulas. After being implanted in the human body's cavity, the doctor can easily control it to perform clamping and suturing operations, thereby completing the suturing operation of the gastrointestinal fistula in the cavity. It is suitable for suturing fistulas of various sizes, large, medium and small, and the surgical incision is small, which can greatly reduce the surgical risk.

[0059] The surgical instrument for treating digestive tract fistula provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principle and implementation of the present invention, and the description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A surgical instrument for treating digestive tract fistula, characterized in that: It includes 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 part or all of it is merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue drawn by the slave end clamping and pulling mechanism, and the main end control handle is provided with an operating part, which is transmission-connected to the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing, so as to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping, pulling and penetrating suturing actions.

2. The surgical instrument for treating digestive tract fistula according to claim 1, characterized in that: The end clamping and pulling mechanism includes a first clamp, a second clamp, and a third clamp; the first clamp is located on the outside of the first clamping edge of the third clamp, and 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.

3. The surgical instrument for treating digestive tract fistula according to claim 2, 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.

4. The surgical instrument for treating digestive tract fistula according to claim 3, characterized in that: The suturing mechanism includes a rotating frame, a stapler and a fourth clamp, the stapler is fixed to the rotating frame, the rotating frame can rotate relative to the end clamping and pulling mechanism, the stapler 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.

5. The surgical instrument for treating digestive tract fistula according to claim 4, 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 tooth groove one by one; the fourth clamp is provided with an extrusion part corresponding to each tooth groove on the inner side of its clamping part, so that the cut suture wire can be bent into a "C" shape through the extrusion part.

6. The surgical instrument for treating digestive tract fistula according to claim 5, characterized in that: The pressing portion of the fourth clip is a plate-like structure capable of passing through the tooth groove, and its lateral projection is a triangle with its apex angles facing each other.

7. The surgical instrument for treating digestive tract fistula according to claim 6, characterized in that: The front end of the connecting part is provided with an arc groove corresponding to the rotation range of the suture tool to form a space for the suture thread to swing back and forth with the suture tool.

8. The surgical instrument for treating digestive tract fistula according to claim 4, characterized in that: The main end control handle includes a hollow track and a holder 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 clip through a first wire, the second pull rod is transmission connected to the second clip through a second wire, the third pull rod is transmission connected to the third clip through a third wire, and the fourth pull rod is transmission connected to the fourth clip through 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 clip, the second clip, the third clip, and the fourth clip to open and close by moving on the track.

9. The surgical instrument for treating digestive tract fistula according to claim 8, 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.

10. The surgical instrument for treating digestive tract fistula according to claim 9, 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.

11. The surgical instrument for treating digestive tract fistula according to claim 10, 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 latching portion and an operating portion, and the latching portion can be latched with the latching tooth under the support of the spring, and the operating portion is used to apply an external force to enable the latching portion to overcome the action of the spring and disengage from the latching tooth, thereby releasing the lock.

12. The surgical instrument for treating digestive tract fistula according to claim 9, characterized in that: The track and the connecting part are provided with a support channel for the suture wire to pass through, and a suture wire push rod is provided at the end of the track. The suture wire push rod is used to drive the suture wire to move forward and backward in the support channel by pushing and pulling.

13. The surgical instrument for treating digestive tract fistula according to claim 12, characterized in that: The rotating frame control handle is nested in the suture wire push rod.

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