Loop ligature device for bundling intestines

Abstract

The utility model provides a ligation device for binding intestines, including tie, tie fixing piece, gun barrel shell, handle shell, tensioning mechanism and cut-off mechanism, tie includes fixed end, cog belt, extension end, tie entry and retainer, the extension end is wound and inserted in the tie entry, by the retainer props and restricts pulling out, and the fixed end is connected with the fixed end and the cog belt. The fixing end of the binding belt is detachably fixed to the binding belt fixing piece, the binding belt fixing piece is fixedly connected to the far end of the gun barrel shell, the near end of the gun barrel shell is fixedly connected with the far end of the handle shell, and the tensioning mechanism and the cutting mechanism are both fixed in the handle shell and the gun barrel shell. The tensioning mechanism is used for tensioning the extending end of the ribbon towards the near end of the gun barrel shell, and the cutting mechanism is used for cutting off the part, exceeding the fixed end, of the extending end. The belt tightening device can provide belt tightening capable of realizing relaxation and contraction of intestines and complete blood circulation, and is simple and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of rectal surgery medical instruments, in particular to a ligature device for tying intestines. Background Art

[0002] After radical resection of low rectal cancer, the anus needs to be preserved by anastomosing the rectal stump with the proximal colon. However, this type of anastomosis is too low and has relatively poor blood supply. Rectal anastomotic fistula often occurs after surgery, and the anastomotic fistula rate is as high as 10% to 20%. In order to prevent rectal anastomotic fistula, the following measures are commonly used clinically: first, a preventive stoma is made at the terminal ileum, or a preventive stoma is made in the transverse colon, so that the intestinal contents do not pass through the rectal anastomosis. After the rectal anastomosis heals, a secondary operation is performed to return the intestinal stoma to the abdominal cavity; second, the gauze strip is used for tying and knotting. On the one hand, tying during surgery is inconvenient, and on the other hand, the gauze strip is not very reliable and often falls off, so that the patient's intestinal contents flow into the abdominal cavity, causing abdominal infection. In addition, when the incision margin needs to be measured clinically, special measurement work is required, which is extremely inconvenient.

[0003] In the past, instrument forceps have been used to clamp and lift, but the amount of tissue clamped by instrument forceps is limited, and if the clamping force is too small, the lifting effect is not good; if the clamping force is too large, the intestinal tract and mesenteric tissue will be damaged, so the lifting effect is poor.

[0004] Defects and reasons of existing technology:

[0005] (1) In the past, traditional methods mostly used gauze strips for tying, which had the following disadvantages: 1. The gauze strips were thick and rough, making them difficult to tie tightly; the tying was not secure, and the knots would loosen during the pulling process, so the tying, blocking and pulling effects were poor; 3. Especially in thoracic and laparoscopic surgeries, it was difficult to tie knots and pull gauze strips.

[0006] (2) Some experts also use a long metal pug clamp in laparoscopic radical resection of mid-low rectal cancer. When cutting the intestinal tract distal to the tumor, the clamp is first clamped, and then the distal tumor is irrigated, and then the intestinal tract distal to the tumor is cut and closed. This technology also has obvious technical defects, which are reflected in: 1. The clamp is not fixed and firm, and it is easy to move or even loosen, which reduces the tumor-free effect after irrigation; 2. There is no lifting effect on the intestinal tract distal to the tumor, which is not helpful for the exposure of the surgical field; 3. There is no function of measuring the length of the intestinal tract. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide a ligature device for tying intestines, which can provide a belt with appropriate pulling force to the patient, can provide belt tightening that can achieve relaxation and contraction of the intestine and complete blood circulation, and is simple and convenient to operate.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A ligature device for tying sausages, comprising a cable tie, a cable tie fixing member, a gun barrel shell, a handle shell, a tensioning mechanism and a cutting mechanism, wherein the cable tie comprises a fixed end, a toothed belt, an extension end, a cable tie entry port and a stopper, wherein the fixed end, the toothed belt and the extension end are connected in sequence as a whole, the toothed belt is a belt-like structure, and a plurality of parallel teeth are arranged on one side thereof, the middle portion of the fixed end is provided with a cable tie entry port for the extension end to pass through, the stopper is fixedly arranged at the cable tie entry port, and the extension end is wound around and inserted into the The cable tie enters the opening and is supported by the stopper to limit its withdrawal, the fixed end of the cable tie is detachably fixed to the cable tie fixing piece, the cable tie fixing piece is fixedly connected to the distal end of the gun barrel shell, the proximal end of the gun barrel shell is fixedly connected to the distal end of the handle shell, the tensioning mechanism and the cutting mechanism are both fixed in the handle shell and the gun barrel shell, the tensioning mechanism is used to pull the extended end of the cable tie toward the proximal end of the gun barrel shell for tightening, and the cutting mechanism is used to cut off the portion of the extended end that exceeds the fixed end.

[0010] Further, the handle shell is L-shaped, and the inner side of the handle shell is provided with a handle movable opening, the tensioning mechanism includes a tensioning handle, and the cutting mechanism includes a firing handle, and the tensioning handle and the firing handle are both arranged at the handle movable opening, the inner side end of the tensioning handle extends into the handle shell and is rotatably connected to the handle shell, and pressing the tensioning handle can trigger the tensioning mechanism to tighten the cable tie, and the inner side end of the firing handle extends into the handle shell and is rotatably connected to the handle shell. Pressing the firing handle can trigger the cutting mechanism to cut the cable tie.

[0011] Furthermore, it also includes a safety key, which is arranged at the movable opening of the handle and is located between the tensioning handle and the firing handle. The safety key is rotatably connected to the handle shell, and the handle shell is provided with two bayonet holes. A protruding bayonet shaft is provided on the inner end of the safety key. When the bayonet shaft is inserted into one of the bayonet holes, the safety key abuts against the firing handle to prevent the firing handle from moving. When the bayonet shaft is inserted into the other bayonet hole, the safety key abuts against the tensioning handle to prevent the tensioning handle from moving.

[0012] Furthermore, the tensioning mechanism also includes a tightening block, a second shaft, a clamping piece and a second torsion spring. The tightening block is slidably arranged in the distal end of the gun barrel housing, and the second shaft, the clamping piece and the second torsion spring are all located in the distal inner hole of the tightening block. The second shaft is fixed to the distal side wall of the tightening block, and the clamping piece is rotatably fixed to the second shaft by the second torsion spring. The lower surface of the clamping piece is provided with oblique teeth that cooperate with the teeth on the toothed belt, and the oblique teeth are inclined toward the proximal end of the device. The spacing of the oblique teeth on the clamping piece is equal to the spacing of the teeth on the cable tie.

[0013] Furthermore, the tensioning mechanism also includes a connecting rod, a curved rod, a pushing sleeve, a push tube, a closing push tube, a connecting piece and a recovery push tube. The connecting rod and the curved rod are both plate-like structures. The inner end of the tensioning handle is linearly slidably connected to the lower part of the connecting rod, the upper end of the connecting rod is rotatably connected to the handle housing, the middle part of the connecting rod is rotatably connected to the lower end of the curved rod, the upper end of the curved rod is linearly slidably connected to the proximal end of the pushing sleeve, the distal end of the pushing sleeve is snap-connected to the proximal end of the push tube, the distal end of the push tube is snap-connected to the proximal end of the closing push tube, the distal end of the closing push tube is snap-connected to the proximal end of the connecting piece, the distal end of the connecting piece is snap-connected to the proximal end of the recovery push tube, and the distal end of the recovery push tube is snap-connected to the proximal end of the tightening block.

[0014] Furthermore, a sliding shaft 1 extends from the inner end of the tightening handle, a linear slide groove 1 is provided at the lower part of the connecting rod, the sliding shaft 1 is slidably arranged in the linear slide groove 1, the upper end of the connecting rod is rotatably connected to the handle housing, the middle part of the connecting rod is rotatably connected to the lower end of the curved rod, a sliding shaft 2 extends from the upper end of the curved rod, a linear slide groove 2 is provided at the proximal end of the pushing sleeve, the sliding shaft 2 is slidably arranged in the linear slide groove 2, a clamping groove 1 is provided at the distal end of the pushing sleeve, a buckle 1 is provided at the proximal end of the push tube, the buckle 1 is clamped in the clamping groove 1, a limiting protrusion 1 extends from the distal end of the push tube toward the inner hole, an L-shaped limiting groove 1 is provided on the proximal side wall of the closed push tube, and the limiting protrusion 1 is first After insertion, it is rotated to the root of the L-shaped limit groove one to realize the card slot connection between the push tube and the closed push tube, and the distal side wall of the closed push tube is provided with an L-shaped limit groove two, and the proximal end of the connecting piece is provided with a limit protrusion two extending toward the inner hole. The limit protrusion two is first inserted and then rotated to the root of the L-shaped limit groove two to realize the card slot connection between the closed push tube and the connecting piece, and the distal end of the connecting piece is provided with a limit protrusion three extending outward, and the proximal side wall of the recovery push tube is provided with an L-shaped limit groove three, and the limit protrusion three is first inserted and then rotated to the root of the L-shaped limit groove three to realize the card slot connection between the recovery push tube and the connecting piece, and the distal side wall of the recovery push tube is provided with a card slot two, and the proximal end of the tightening block is provided with a buckle two, and the buckle two is clamped in the card slot two.

[0015] Furthermore, it also includes a locator, a torsion spring and a button. The locator is fixedly and rotatably connected to the handle housing, and a hook is extended from the upper end of the locator. An L-shaped notch is provided at the upper end of the curved rod. When the upper end of the curved rod slides backward to the inside of the hook, the hook hooks the L-shaped notch. The torsion spring is set in the middle of the locator, and the two ends of the torsion spring, one end abuts against the lower section of the locator, and the other end abuts against the upper end of the curved rod.

[0016] Furthermore, it also includes a reset spring 1, which is connected between the push sleeve and the handle shell. Under the action of the reset spring 1, the push sleeve is reset to the far end of the device.

[0017] Furthermore, the cutting mechanism also includes rack 1, gear 1, gear 2, rack 2, a firing shaft, a firing rod, a limiting member, a pushing block, a cutting knife, shaft 4, torsion spring 3 and shaft 3. A section of arc-shaped teeth is provided on the firing handle, and the arc-shaped teeth mesh with the teeth on the rack 1. The teeth on the rack 1 also mesh with the teeth on the gear 1. The gear 1 is coaxially fixedly connected to the gear 2. The teeth on the gear 2 mesh with the teeth on the rack 2. A driving block extends from the side of the rack 2, and the driving block is snap-connected with the proximal end of the firing shaft. The firing shaft is slidably inserted into the inner hole of the pushing sleeve, and the distal end of the firing shaft abuts against the proximal end of the firing rod. The firing rod is slidably inserted into the closing push tube, the connecting member and the recovery push tube, and the distal end of the firing rod is rotated and locked with the proximal end of the limiting member. The limit block is connected, a limit protrusion extends upward on the upper side of the limit piece, and the push block is provided with a limit groove corresponding to the number and position of the limit protrusion, and the limit protrusion extends into the limit groove to realize the limit connection between the limit piece and the push block, and the limit piece and the push block are slidably inserted into the recovery push tube, and the cutting knife is a Z-shaped structural plate, and the middle part of the cutting knife is rotatably connected to the tightening block through shaft four, and a V-shaped sharp knife is provided on the distal end of the cutting knife, and the V-shaped sharp knife is located below the extending end, and the cutting edge of the V-shaped sharp knife faces the extending end, and the torsion spring three and the shaft three are provided below the proximal end of the cutting knife, and the shaft three is fixed on the tightening block, and the torsion spring three is rotatably arranged on the shaft three, and the two ends of the torsion spring three respectively abut against the proximal end of the cutting knife and the bottom of the tightening block.

[0018] Furthermore, the cutting mechanism also includes a second reset spring, the upper end of which is fixed to the inner end of the firing handle, and the lower end is fixed to the handle housing. Under the action of the second reset spring, the outer end of the firing handle flips upward and resets.

[0019] The beneficial effects of the utility model are as follows: the cable tie is tightened by the tightening mechanism, and the cable tie can be tightened from a relaxed state to a contracted state multiple times, and the state of the cable tie remains unchanged after being tightened. The cable tie is tightened by the tightening mechanism and cut off by the cutting mechanism, so that a belt with appropriate pulling force can be provided to the patient, and a belt tightening that can achieve relaxation and contraction of the intestine and complete blood circulation can be provided, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A stereoscopic view of a tie used in a ligating device for tying intestines according to an embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the ligating device for tying intestines after being connected with the ligature according to the embodiment of the utility model;

[0022] Figure 3 For the utility model embodiment Figure 2 A partial enlarged view of E;

[0023] Figure 4 This is a three-dimensional view of the ligating device for tying intestines in an embodiment of the utility model, at the handle shell portion, when the right handle shell is removed;

[0024] Figure 5 For the utility model embodiment Figure 4 Part F of the gun is a partial enlarged view of the firing handle when the safety button stops it;

[0025] Figure 6 For the utility model embodiment Figure 4 Part F of the device is a partial enlarged view of the safety key stopping the tension handle;

[0026] Figure 7 An exploded view of the tensioning mechanism of an embodiment of the utility model;

[0027] Figure 8 An exploded view of a cutting mechanism according to an embodiment of the present utility model;

[0028] Fig. 9 It is a three-dimensional view of a half-section of a ligation device for tying intestines according to an embodiment of the utility model;

[0029] Fig.10 For the utility model embodiment Fig. 9 A partial enlarged view of;

[0030] Fig.11 For the utility model embodiment Fig. 9 B is a partial enlarged view;

[0031] Fig.12 For the utility model embodiment Fig. 9 A partial enlarged view of C;

[0032] Fig.13 For the utility model embodiment Fig. 9 A partial enlarged view of D;

[0033] Fig.14 For the utility model embodiment Fig.13 A local enlarged view of G;

[0034] Fig.15 Another stereoscopic view of the cable tie used in the ligating device for tying intestines according to an embodiment of the utility model.

[0035] Description of labels:

[0036] 1. Push block; 2. Limiting piece; 3. Tightening block; 4. Cable tie; 5. Cable tie fixing piece; 6. Torsion spring 2; 7. Axis 2; 8. Pressing piece; 9. Axis 4; 10. Cutting knife; 11. Torsion spring 3; 12. Axis 3; 13. Gun barrel shell; 14. Firing rod; 15. Recovering push tube; 16. Connecting piece; 17. Closing push tube; 20. Push tube; 21. Firing shaft; 22. Push sleeve; 23. Gear 1; 24. Reset spring 1; 26. Bending rod; 27. Rack 2; 28. Positioner; 29. ​​Torsion spring 1; 30. Rack 1; 31. Gear 2; 32. Connecting rod; 33. Left handle shell; 34. Button; 35. Reset spring 2; 36. Right handle shell; 38. Tension handle; 39. Safety button; 40. Firing handle;

[0037] 1-1, limiting groove; 1-2, arc-shaped pressing block;

[0038] 2-1, limiting protrusion;

[0039] 3-1, buckle 2; 3-2, notch for the clamping position;

[0040] 4-1, fixed end; 4-2, toothed belt; 4-3, extension end; 4-4, cable tie entry port; 4-5, stopper; 4-6, snap-on ear plate;

[0041] 5-1, boss; 5-2, ear plate entering notch; 5-3, ear plate limiting rotation groove;

[0042] 10-1, V-shaped sharp knife;

[0043] 15-1, L-shaped limit slot three; 15-2, card slot two;

[0044] 16-1, limiting protrusion 2; 16-2, limiting protrusion 3;

[0045] 17-1, L-shaped limit slot 1; 17-2, L-shaped limit slot 2;

[0046] 20-1, buckle one; 20-2, limiting protrusion one;

[0047] 22-1, linear slide 2; 22-2, slot 1;

[0048] 26-1, sliding shaft 2; 26-2, L-shaped notch;

[0049] 27-1, driving block;

[0050] 28-1, hook;

[0051] 32-1, linear slide 1;

[0052] 33-1, bayonet hole;

[0053] 38-1, sliding shaft one;

[0054] 39-1, bayonet pin shaft;

[0055] 40-1, arc-shaped teeth. DETAILED DESCRIPTION

[0056] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0057] Please refer to Figures 1 to 15 , the embodiments provided by the utility model are:

[0058] A tying device for tying intestines, firstly, a cable tie 4 is provided, the cable tie 4 includes a fixed end 4-1, a toothed belt 4-2 and an extension end 4-3 which are connected in sequence as one body, the toothed belt 4-2 is a belt-like structure, one side of which is provided with a plurality of parallel teeth, the center of the fixed end 4-1 is provided with a cable tie entrance 4-4 for the extension end 4-3 to pass through, specifically, the cable tie 4 also includes a stopper 4-5 provided at the cable tie entrance 4-4, the stopper 4-5 is a unidirectional ratchet, when the stopper 4-5 is stuck in a tooth groove on the toothed belt 4-2, the toothed belt 4-2 can only continue to move forward and cannot retreat, that is, when the toothed belt 4-2 enters the cable tie entrance 4-4, under the action of the stopper 4-5, the circle formed by the toothed belt 4-2 will only become smaller and smaller and will not loosen.

[0059] The specific structure is exemplified as follows: a plurality of teeth arranged in parallel and at equal intervals are provided on the lower side of the toothed belt 4-2, the extension end 4-3 is turned upward and wound into the tie inlet 4-4 of the fixed end 4-1, and the stopper 4-5 is stuck on the teeth on the toothed belt 4-2 turned upward driven by the extension end 4-3, which is equivalent to both ends of the toothed belt 4-2 being located at the position of the fixed end 4-1, thus forming a circle. Of course, if teeth are provided on the upper side of the toothed belt 4-2, the extension end 4-3 is turned downward and wound into the tie inlet 4-4, and the stopper 4-5 is stuck on the teeth turned downward driven by the extension end 4-3, it is also possible, and the toothed belt 4-2 is also wound into a circle.

[0060] Preferably, the extended end 4-3 of the cable tie 44 is V-shaped in top view, and the toothed belt 4-2 of the cable tie 44 is in the shape of two parallel belts, so that each tightening is equivalent to tightening with two belts, so that the tightening is better.

[0061] Furthermore, two symmetrically arranged snap-in ear plates 4-6 are provided on the side of the cable tie 4, so as to facilitate connecting the cable tie 4 to the surgical instrument or removing it from the surgical instrument.

[0062] In order to facilitate tying the cable tie 4 on the intestine, a tying device for tying the intestine is designed, which includes a distal end and a proximal end, the so-called distal end refers to the end that can be inserted into the human body, and the so-called proximal end refers to the end close to the human hand. The device includes a cable tie fixing 5, a gun barrel shell 13, a handle shell, a tensioning mechanism and a cutting mechanism. The cable tie 4 is detachably fixed to the cable tie fixing 5, the cable tie fixing 5 is fixed to the distal end of the gun barrel shell 13, and the proximal end of the gun barrel shell 13 is fixed to the handle shell. The tensioning mechanism is used to pull the extended end 4-3 of the cable tie 4 toward the proximal end of the gun barrel shell 13, and the cutting mechanism is used to cut off the part of the extended end 4-3 that exceeds the fixed end 4-1. The tensioning mechanism and the cutting mechanism are both fixed to the handle shell and the inside of the gun barrel shell 13.

[0063] Specifically, in order to make the distal end of the device rounded as a whole and not to hurt human tissue, the cable tie fixing part 5 is designed to be cylindrical with the same shape as the distal end of the gun barrel housing 13, and the cable tie 4 is fixed at the center of the cable tie fixing part 5. In order to facilitate the connection and removal of the cable tie 4, a ring-shaped boss 5-1 is extended on the distal end face of the cable tie fixing part 5. In order to facilitate the clamping of the cable tie 4, two ear plate entry notches 5-2 and two ear plate limit rotation grooves 5-3 are symmetrically opened on the boss 5-1. The ear plate limit rotation grooves 5-3 are opened on the bottom side of the boss 5-1. The ear plate entry notch 5-2 runs through the height of the boss 5-1. One ear plate entry notch 5-2 and one ear plate limit rotation groove 5-3 form an L-shaped groove. More specifically, along the direction in which the ear plate limit rotation groove 5-3 extends from one end connected to the ear plate entry notch 5-2 to the other end of itself, the height of the ear plate limit rotation groove 5-3 becomes smaller and smaller. When installing the cable tie 4, the snap-on ear plate 4-6 of the cable tie 4 is inserted into the ear plate entry notch 5-2, and then the cable tie 4 is rotated to rotate the snap-on ear plate 4-6 into the ear plate limit rotation groove 5-3 until it is clamped, and the cable tie 4 is fixed on the cable tie fixing member 5. When the cable tie 4 needs to be removed, the cable tie 4 is rotated to rotate the snap-on ear plate 4-6 to the position where the ear plate entry notch 5-2 is located, and the cable tie 4 and the cable tie fixing member 5 can be separated.

[0064] Further, the handle shell includes a left handle shell 33 and a right handle shell 36, the left handle shell 33 and the right handle shell 36 are symmetrically arranged in an L shape, and a handle movable opening is provided at the inner corner position thereof, the tightening mechanism includes a tightening handle 38, and the cutting mechanism includes a firing handle 40, the tightening handle 38 and the firing handle 40 are both arranged at the handle movable opening, the inner side end of the tightening handle 38 extends into the handle shell and is rotatably connected to the handle shell, pressing the tightening handle 38 can trigger the tightening mechanism to tighten the cable tie 4, and the inner side end of the firing handle 40 extends into the handle shell and is rotatably connected to the handle shell. Pressing the firing handle 40 can trigger the cutting mechanism to cut the cable tie 4.

[0065] Furthermore, in actual use, only one of the tensioning handle 38 and the firing handle 40 can be used at a time. When one of them is in use, the other cannot be operated to prevent errors. In order to prevent the other handle from erroneously operating when one of the tensioning handle 38 and the firing handle 40 is in operation, the device also includes a safety key 39. The safety key 39 is also provided at the movable opening of the handle and is located between the tensioning handle 38 and the firing handle 40. The inner end of the safety key 39 extends into the handle housing and is rotatably connected to the handle housing. Specifically, the rotatable connection between the safety key 39 and the left handle housing 33 is taken as an example, see Figures 4 to 6 As shown, two bayonet holes 33-1 are provided on the left handle shell 33, and a protruding bayonet shaft 39-1 is provided on the safety key 39. Figure 4 and Figure 5 In the process, the bayonet shaft 39-1 on the safety key 39 extends into the bayonet hole 33-1 at the upper side. At this time, the safety key 39 abuts against the firing handle 40 to prevent the firing handle 40 from moving, and the tensioning handle 38 can move. Figure 6 In the embodiment, the bayonet shaft 39-1 on the safety key 39 extends into the bayonet hole 33-1 at the lower part, and the safety key 39 abuts against the tensioning handle 38 to prevent the tensioning handle 38 from moving, and the firing handle 40 can move. Of course, the safety key 39 can also be rotatably connected to the right handle shell 36, and the structure described in this paragraph is also applicable.

[0066] Further, in the tensioning mechanism, the tensioning mechanism also includes a connecting rod 32, a bent rod 26, a push sleeve 22, a push tube 20, a closing push tube 17, a connecting piece 16, a recovery push tube 15, a tightening block 3, a shaft 27, a pressing piece 8, a torsion spring 26, a return spring 1 24, a positioner 28, a torsion spring 1 29 and a button 34, such as Figure 4 , Figure 7 as well as Figures 10 to 14As shown, the connecting rod 32 and the curved rod 26 are both plate-like structures, a sliding shaft 38-1 extends from the inner end of the tightening handle 38, a linear slide groove 32-1 is provided at the lower part of the connecting rod 32, and the sliding shaft 38-1 is slidably arranged in the linear slide groove 32-1, the upper end of the connecting rod 32 is rotatably connected to the left handle shell 33, the middle part of the connecting rod 32 is rotatably connected to the lower end of the curved rod 26, a sliding shaft 26-1 extends from the upper end of the curved rod 26, the pushing sleeve 22, the pushing tube 20, the closing pushing tube 17, the connecting piece 16, the recovering pushing tube 15, and the tightening block 3 are all special-shaped tubular structures, the A linear slide groove 22-1 is provided at the proximal end of the push sleeve 22, and the sliding shaft 26-1 is slidably arranged in the linear slide groove 22-1. A clamping groove 22-2 is provided at the distal end of the push sleeve 22. A buckle 20-1 is provided at the proximal end of the push tube 20, and the buckle 20-1 is clamped in the clamping groove 22-2. A limiting protrusion 20-2 is extended toward the inner hole of the distal end of the push tube 20. An L-shaped limiting groove 17-1 is provided on the proximal side wall of the closed push tube 17. The limiting protrusion 20-2 is first inserted and then rotated to the root of the L-shaped limiting groove 17-1, so as to realize the connection between the push tube 20 and the clamping groove of the closed push tube 17. An L-shaped limiting groove 17-2 is provided on the distal side wall of the closing push tube 17, and a limiting protrusion 16-1 extending toward the inner hole is provided at the proximal end of the connecting member 16. The limiting protrusion 16-1 is first inserted and then rotated to the root of the L-shaped limiting groove 17-2 to achieve a card slot connection between the closing push tube 17 and the connecting member 16. A limiting protrusion 16-2 extending outward is provided at the distal end of the connecting member 16. An L-shaped limiting groove 15-1 is provided on the proximal side wall of the recovery push tube 15. The limiting protrusion 16-2 is first inserted and then rotated to the root of the L-shaped limiting groove 15-1 to achieve a card slot connection between the recovery push tube 15 and the connecting member 16. A second card slot 15-2 is provided on the distal side wall of the recovery push tube 15, and a second buckle 3-1 is provided at the proximal end of the tightening block 3, and the second buckle 3-1 is clamped in the second card slot 15-2. The second shaft 7, the clamping piece 8, and the second torsion spring 6 are all located in the distal inner hole of the tightening block 3. The second shaft 7 is fixed on the distal side wall of the tightening block 3, and the clamping piece 8 is rotatably fixed on the second shaft 7 by the second torsion spring 6. The lower surface of the clamping piece 8 is provided with helical teeth that cooperate with the teeth on the toothed belt 4-2, and the helical teeth are inclined toward the proximal end of the device. The spacing of the helical teeth on the clamping piece 8 is equal to the spacing of the teeth on the cable tie 4.When the oblique teeth on the clamping member 8 are pressed into the tooth grooves of the toothed belt 4-2, the toothed belt 4-2 is clamped against the inner hole wall of the tightening block 3. When the clamping member 8 moves toward the proximal end of the device, the extension end 4-3 of the cable tie 4 is pushed toward the proximal end of the device, and the cable tie 4 performs a tightening action. When the clamping member 8 moves toward the distal end of the device to reset, under the action of the stopper 4-5 on the cable tie 4, the extension end 4-3 of the cable tie 4 cannot move toward the distal end of the device, and the clamping member 8 moves toward the distal end of the device relative to the extension end 4-3. In order to allow the clamping member 8 to return to the distal limit position, a reset spring 24 is provided and connected between the push sleeve 22 and the handle housing. For example. Figure 7 and Fig.10 As shown, in order to ensure that the tensioning handle 38 can stay at the extreme position close to the handle housing after each tightening action of the cable tie 4 (if the firing handle 40 needs to be moved at this time, the space between the tensioning handle 38 and the firing handle 40 needs to be occupied, and the tensioning handle 38 stays close to the handle housing to avoid the action of the firing handle 40), the position of the tightening block 3 needs to be positioned at this time, and the tightening block 3 cannot be moved to the far end of the device. Therefore, a positioner 28, a torsion spring 29 and a button 34 are also provided to limit the position of the upper end of the bent rod 26. For details, see Figure 4 and Figure 7As shown, the positioner 28 is rotatably connected to the handle housing, and a hook 28-1 extends from the upper end of the positioner 28, and an L-shaped notch 26-2 is provided at the upper end of the curved rod 26. When the upper end of the curved rod 26 slides backward to the inner side of the hook 28-1, the hook 28-1 hooks the L-shaped notch 26-2. At this time, the curved rod 26 is limited by the positioner 28 to be located at the proximal position, and the upper end of the curved rod 26, together with the push sleeve 22, the push tube 20, the closing push tube 17, the connecting piece 16, the recovery push tube 15, and the tightening block 3 can no longer move toward the distal end of the device. In order to allow the locator 288 to be in a state of hooking the upper end of the curved rod 26, a torsion spring 29 is designed. The torsion spring 29 is sleeved on the protruding cylinder of the locator 28. The two ends of the torsion spring 29, one end abuts against the lower section of the locator 28, and the other end abuts against the sliding shaft 26-1 at the upper end of the curved rod 26, so that the hook 28-1 is kept in a posture of hooking the L-shaped notch 26-2. When the tightening handle 38 needs to be rotated to the upper limit position and the tightening handle 38 is pressed again to perform a tightening action, the hook 28-1 needs to no longer hook the L-shaped notch 26-2. For this purpose, a button 34 is designed. The button 34 is installed at the proximal position of the upper end of the handle shell. The upper end of the button 34 is rotatably connected to the handle shell. The lower end of the button 34 is close to the lower end of the locator 28. Press the lower end of the button 34 with your finger, and the lower end of the button 34 rotates around its own upper end. At the same time, the lower end of the button 34 presses the lower end of the positioner 28, so that the hook 28-1 at the upper end of the positioner 28 is tilted, and the hook 28-1 no longer hooks the L-shaped notch 26-2. At this time, under the action of the reset spring 24, the upper end of the curved rod 26, the push sleeve 22, the push tube 20, the closing push tube 17, the connecting piece 16, the recovery push tube 15, and the tightening block 33 all move toward the far end of the device, and the extended end of the tightening handle 38 also rotates to the upper limit position, waiting for the next tightening action.

[0067] The working process of tightening the cable tie 4 by the tensioning mechanism is as follows: first, the cable tie 4 is rotated and clamped on the cable tie fixing member 5, the gun barrel housing 13 fixed with the cable tie 4 is extended into the human tissue, the cable tie 4 is placed at the intestinal position to be tightened, and the cable tie 4 is bent with a tool to allow the extended end 4-3 to pass through the cable tie entry port 4-4 of the fixed end 4-1, and the extended end 4-3 continues to extend toward the proximal end of the device to enter the gun barrel housing 13 until the extended end 4-3 reaches below the clamping member 8, and the extended end 4-3 is clamped by the clamping member 8 under the action of the torsion spring 26, at which time the cable tie 4 forms a folded and tightened state, that is, a loop is formed; next, the safety key 39 is placed at a position to prevent the firing handle 40 from malfunctioning, and initially the extended end of the tensioning handle 38 is rotated to the upward limit position, see Figure 2As shown, the tensioning handle 38 is pressed downward, and the sliding shaft 1 38-1 on the tensioning handle 38 slides in the linear slide groove 1 32-1 of the connecting rod 32, and drives the connecting rod 32 to rotate around its upper end. The connecting rod 32 rotates, and at the same time drives the lower end of the bent rod 26 fixed thereon to rotate together, and drives the sliding shaft 26-1 at the upper end of the bent rod 26 to slide in the linear slide groove 22-1 of the push sleeve 22 toward the proximal end of the device, and at the same time drives the push sleeve 22 to slide toward the proximal end of the device, see Figures 10 to 13 As shown, the push sleeve 22 sequentially drives the push tube 20, the closing push tube 17, the connecting piece 16, the retracting push tube 15, the tightening block 3, the second shaft 7, the pressing piece 8, and the torsion spring 26 to move toward the proximal end of the device. At the same time, the pressing piece 8 presses the extension end 4-3 of the cable tie 4 to move toward the proximal end of the device. The cable tie 4 performs a tightening action. At this time, the positioner 28 hooks the upper end of the curved rod 26 under the action of the torsion spring 1 29, and the tightening handle 38 fits the handle housing. See Fig.10 As shown; start the analysis and judgment to see whether the cable tie 4 needs to be tightened. If the cable tie 4 does not need to be tightened anymore, the insurance key 39 is pressed against the tightening handle 38 to prevent the tightening handle 38 from moving, and the firing handle 40 is moved to cut the cable tie 4. If the cable tie 4 still needs to be tightened, the tightening mechanism needs to be reset. At this time, press the button 34 with your finger, and the lower end of the button 34 presses the lower end of the positioner 28, the upper end of the positioner 28 tilts up, and the upper end of the curved rod 26 is separated from the hook 28-1 at the upper end of the positioner 28. When the reset spring 2 4, the upper end of the curved rod 26, the pushing sleeve 22, the pushing tube 20, the closing pushing tube 17, the connecting piece 16, the recovering pushing tube 15, the tightening block 3, the second shaft 7, the pressing piece 8, and the second torsion spring 6 all move toward the distal end of the device, and the protruding end of the tightening handle 38 also rotates to the upward limit position, and the tightening mechanism is reset; repeat the above-mentioned tightening of the cable tie 4, starting to determine whether it needs to be tightened, and if it needs to be tightened, starting the tensioning mechanism to reset and tighten until the cable tie 4 tightens the intestine, at which time the cutting mechanism needs to be started.

[0068] Furthermore, in the cutting mechanism, the cutting mechanism also includes a rack 1 30, a gear 1 23, a gear 2 31, a rack 27, a firing shaft 21, a firing rod 14, a limiter 2, a push block 1, a cutting knife 10, a shaft 4 9, a torsion spring 3 11, a shaft 3 12 and a reset spring 2 35. The firing handle 40 is provided with a section of arc-shaped teeth 40-1, and the arc-shaped teeth 40-1 intermittently mesh with the teeth on the rack 1 30, and the teeth on the rack 1 30 also mesh with the teeth on the gear 1 23. The gear 1 23 is coaxially connected to the gear 2 31, and the teeth on the gear 2 31 mesh with the teeth on the rack 2 27. A driving block 27-1 extends from the side of the rack 27, and the driving block 27-1 is connected to the gear 2 31. The proximal end of the firing shaft 21 is snap-connected, and the firing shaft 21 is slidably inserted into the inner hole of the pushing sleeve 22. The distal end of the firing shaft 21 abuts against the proximal end of the firing rod 14. The firing rod 14 is slidably inserted into the closing push tube 17, the connecting member 16, and the recovery push tube 15. The distal end of the firing rod 14 is rotationally connected with the proximal end of the limiting member 2. The upper side surface of the limiting member 2 extends upward with a limiting protrusion 2-1. The pushing block 1 is provided with a limiting groove 1-1 corresponding to the number and position of the limiting protrusion 2-1. The limiting protrusion 2-1 extends into the limiting groove 1-1 to realize the limiting connection between the limiting member 2 and the pushing block 1. The limiting member 2 and the pushing block 1 are slidably inserted into the recovery push tube 15. In order to cut the cable tie 4, a cutting knife 10 is designed. The cutting knife 10 is a Z-shaped structural plate. The middle part of the cutting knife 10 is rotatably connected to the tightening block 3 through the shaft 49. A V-shaped sharp knife 10-1 is provided on the distal end of the cutting knife 10. The V-shaped sharp knife 10-1 is located below the extension end 4-3, and the cutting edge of the V-shaped sharp knife 10-1 faces the extension end 4-3. A torsion spring 3 11 and a shaft 3 12 are provided below the proximal end of the cutting knife 10. The torsion spring 3 11 is rotatably arranged on the shaft 4 The shaft 3 12 is fixed on the tightening block 3, and the two ends of the torsion spring 3 11 are respectively against the bottom of the proximal end of the cutting knife 10 and the bottom of the tightening block 3. Preferably, a positioning notch 3-2 is provided at the bottom of the tightening block 3 to limit one end of the torsion spring 3 11. The torsion spring 3 11 pushes the proximal end of the cutting knife 10 upward, so that the distal end of the cutting knife 10 is located below the extension end 4-3, and the V-shaped sharp knife 10-1 does not contact the extension end 4-3, and does not trigger the action of cutting the extension end 4-3. The distal end of the pushing block 1 is integrally provided with an arc-shaped pressing block 1-2. When the pushing block 1 slides toward the distal end until its arc-shaped pressing block 1-2 contacts the proximal end of the cutting knife 10 and presses the proximal end of the cutting knife 10 downward, the distal end of the cutting knife 10 tilts upward to cut off the extension end 4-3. That is, when the rack 27 moves toward the distal end, it drives the firing shaft 21, the firing rod 14, the limit member 2 and the pushing block 1 to move toward the distal end, and the cable tie 4 can be cut at this time.When the firing handle 40 is pressed downward, the firing handle 40 rotates, and the arc-shaped tooth 40-1 on the firing handle 40 drives the rack 1 30 to move toward the distal end, and at the same time drives the gear 1 23 to rotate, the gear 2 31 to rotate, and the rack 2 27 to move toward the distal end. When the firing handle 40 is released, in order to allow the firing handle 40 to return to a position where it does not contact the rack 1 30, a reset spring 2 35 is provided, and the upper end of the reset spring 2 35 is fixed to the inner end of the firing handle 40, and the lower end is fixed to the handle housing. In order to make the push block 1 slide to the extreme position at the proximal end, that is, the position where the push block 1 does not contact the cutting knife 10, a reset tension spring is provided between the firing rod 14 and the recovery push tube 15. When the reset tension spring pulls the firing rod 14 to slide and reset toward the proximal end of the device, it simultaneously drives the rack 1 30, the rack 2 27, the firing shaft 21, the firing rod 14, the limiter 2, and the push block 1 to slide and reset toward the proximal end of the device.

[0069] The working process of the cutting mechanism cutting the cable tie 4 is as follows: after the tightening position of the cable tie 4 is adjusted, the extra part of the extension end 4-3 of the cable tie 4 needs to be cut off. Initially, when the safety key 39 limits the misoperation of the firing handle 40, the arc-shaped tooth 40-1 does not contact the rack 1 30. When the firing handle 40 needs to be used, the safety key 39 is adjusted to a position that limits the misoperation of the tensioning handle 38. The firing handle 40 is manually pressed down and rotated. The inner side end of the firing handle 40 rotates upward until the arc-shaped tooth 40-1 meshes with the rack 1 30, and the arc-shaped tooth 40-1 drives the rack 1 30 to move toward the far end, and the cable tie 40 is cut off. The moving gear 1 23 rotates, the gear 2 31 rotates, and the rack 2 27 moves toward the distal end. The rack 2 27 drives the firing shaft 21, the firing rod 14, the limiter 2, and the push block 1 to move toward the distal end. When the push block 1 slides toward the distal end until its arc-shaped pressing block 1-2 contacts the proximal end of the cutting knife 10 and presses the proximal end of the cutting knife 10 downward, the distal end of the cutting knife 10 tilts upward to cut off the extended end 4-3 of the cable tie 4, completing the action of cutting the cable tie 4. Next, when the firing handle 40 is released by hand, the firing handle 40 returns to its initial position under the action of the reset spring 2 35, and the firing handle 40 does not contact the rack 1 30 at this time. Further, under the action of the reset tension spring, the rack 1 30, the rack 2 27, the firing shaft 21, the firing rod 14, the limiter 2, and the push block 1 slide toward the proximal end of the device to reset.

[0070] Furthermore, the surgical operation process after the cable tie 4 is cut off is as follows: after the cable tie 4 is cut off, the handle shell is rotated by hand to separate the cable tie 4 from the cable tie fixing member 5, and the cable tie 4 remains on the intestine, and the pressing member 8 presses the cut extension end 4-3 onto the tightening block 3, and the gun barrel shell 13 is pulled out of the human body, and the cut extension end 4-3 is also brought out of the human body. At this point, a bowel tying operation is completed.

[0071] In summary, the advantages of the ligating device for tying intestines provided by the utility model are:

[0072] 1. Under laparoscopic conditions, the intestinal ligation device of the present application is easy and quick to operate, greatly shortening the operation time;

[0073] 2. A belt that can maintain appropriate traction for the patient, thereby achieving intestinal relaxation, contraction and complete blood circulation;

[0074] 3. Compared with gauze strips, the cable tie 4 is safer, more reliable, tighter and will not loosen;

[0075] 4. Operate once to tighten and cut the cable tie 4, and two cable ties 4 will be automatically formed to tighten the structure, which is more secure.

[0076] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A ligating device for tying intestines, characterized in that: The invention comprises a cable tie (4), a cable tie fixing member (5), a gun barrel shell (13), a handle shell, a tensioning mechanism and a cutting mechanism. The cable tie (4) comprises a fixed end (4-1), a toothed belt (4-2), an extension end (4-3), a cable tie entrance (4-4) and a stopper (4-5). The fixed end (4-1), the toothed belt (4-2) and the extension end (4-3) are connected in sequence as a whole. The toothed belt (4-2) is a belt-shaped structure, and a plurality of parallel teeth are arranged on one side thereof. The middle part of the fixed end (4-1) is provided with a cable tie entrance (4-4) for the extension end (4-3) to pass through. The stopper (4-5) is fixedly arranged at the cable tie entrance (4-4). The extension end (4-3) is connected to the fixing end (4-1) and the toothed belt (4-2) and the extension end (4-3). -3) is wound and inserted into the cable tie entrance (4-4) and is held back by the stopper (4-5) to limit its removal, the fixed end (4-1) of the cable tie (4) is detachably fixed to the cable tie fixing member (5), the cable tie fixing member (5) is fixedly connected to the distal end of the gun barrel housing (13), the proximal end of the gun barrel housing (13) is fixedly connected to the distal end of the handle housing, the tensioning mechanism and the cutting mechanism are both fixed in the handle housing and the gun barrel housing (13), the tensioning mechanism is used to pull the extended end (4-3) of the cable tie (4) toward the proximal end of the gun barrel housing (13) for tightening, and the cutting mechanism is used to cut off the portion of the extended end (4-3) that exceeds the fixed end (4-1).

2. The ligation device for tying intestines according to claim 1, characterized in that: The handle shell is L-shaped, and the inner side surface of the handle shell is provided with a handle movable opening. The tensioning mechanism includes a tensioning handle (38), and the cutting mechanism includes a firing handle (40). The tensioning handle (38) and the firing handle (40) are both arranged at the handle movable opening. The inner side end of the tensioning handle (38) extends into the handle shell and is rotatably connected to the handle shell. Pressing the tensioning handle (38) can trigger the tensioning mechanism to tighten the cable tie (4). The inner side end of the firing handle (40) extends into the handle shell and is rotatably connected to the handle shell. Pressing the firing handle (40) can trigger the cutting mechanism to cut the cable tie (4).

3. The ligating device for tying intestines according to claim 2, characterized in that: The invention also includes a safety key (39), which is arranged at the movable opening of the handle and is located between the tensioning handle (38) and the firing handle (40). The safety key (39) is rotatably connected to the handle shell. The handle shell is provided with two bayonet holes (33-1). A protruding bayonet shaft (39-1) is provided on the inner side end of the safety key (39). When the bayonet shaft (39-1) is inserted into one of the bayonet holes (33-1), the safety key (39) abuts against the firing handle (40) to prevent the firing handle (40) from moving. When the bayonet shaft (39-1) is inserted into the other bayonet hole (33-1), the safety key (39) abuts against the tensioning handle (38) to prevent the tensioning handle (38) from moving.

4. The ligation device for tying intestines according to claim 2, characterized in that: The tensioning mechanism further comprises a tightening block (3), a second shaft (7), a pressing piece (8) and a second torsion spring (6); the tightening block (3) is slidably arranged in the distal end of the gun barrel housing (13); the second shaft (7), the pressing piece (8) and the second torsion spring (6) are all located in the distal inner hole of the tightening block (3); the second shaft (7) is fixed to the distal side wall of the tightening block (3); the pressing piece (8) is rotatably fixed to the second shaft (7) by the second torsion spring (6); the lower surface of the pressing piece (8) is provided with oblique teeth that cooperate with the teeth on the toothed belt (4-2); the oblique teeth are arranged obliquely toward the proximal end of the device; the spacing of the oblique teeth on the pressing piece (8) is equal to the spacing of the teeth on the cable tie (4).

5. The ligating device for tying intestines according to claim 4, characterized in that: The tensioning mechanism further comprises a connecting rod (32), a bent rod (26), a pushing sleeve (22), a push tube (20), a closing push tube (17), a connecting piece (16) and a recovery push tube (15); the connecting rod (32) and the bent rod (26) are both plate-like structures; the inner end of the tensioning handle (38) is linearly slidably connected to the lower part of the connecting rod (32); the upper end of the connecting rod (32) is rotatably connected to the handle housing; the middle part of the connecting rod (32) is rotatably connected to the lower end of the bent rod (26); The upper end of the curved rod (26) is linearly slidably connected to the proximal end of the push sleeve (22), the distal end of the push sleeve (22) is snap-connected to the proximal end of the push tube (20), the distal end of the push tube (20) is snap-connected to the proximal end of the closing push tube (17), the distal end of the closing push tube (17) is snap-connected to the proximal end of the connecting piece (16), the distal end of the connecting piece (16) is snap-connected to the proximal end of the recovery push tube (15), and the distal end of the recovery push tube (15) is snap-connected to the proximal end of the tightening block (3).

6. The ligation device for tying intestines according to claim 5, characterized in that: A sliding shaft 1 (38-1) extends from the inner side end of the tightening handle (38), a linear slide groove 1 (32-1) is provided at the lower part of the connecting rod (32), and the sliding shaft 1 (38-1) is slidably arranged in the linear slide groove 1 (32-1), a sliding shaft 2 (26-1) extends from the upper end of the curved rod (26), and a linear slide groove 2 (22-1) is provided at the proximal end of the pushing sleeve (22), and the sliding shaft 2 (26-1) is slidably arranged in the linear slide groove 2 (22-1). The distal end of the push sleeve (22) is provided with a slot (22-2), the proximal end of the push tube (20) is provided with a buckle (20-1), the buckle (20-1) is snap-fitted into the slot (22-2), the distal end of the push tube (20) is provided with a limiting protrusion (20-2) extending toward the inner hole, the proximal side wall of the closed push tube (17) is provided with an L-shaped limiting groove (17-1), the limiting protrusion (20-2) is first inserted and then rotated to the root of the L-shaped limiting groove (17-1), The push tube (20) is connected to the slot of the closed push tube (17), and the distal side wall of the closed push tube (17) is provided with an L-shaped limiting groove (17-2). The proximal end of the connecting member (16) is provided with a limiting protrusion (16-1) extending toward the inner hole. The limiting protrusion (16-1) is first inserted and then rotated to the root of the L-shaped limiting groove (17-2), so as to realize the connection between the closed push tube (17) and the connecting member (16) by the slot. The distal end of the connecting member (16) is provided with a limiting protrusion (16-1) extending toward the outside. 6-2), an L-shaped limiting groove three (15-1) is provided on the proximal side wall of the recovery push tube (15), and the limiting protrusion three (16-2) is first inserted and then rotated to the root of the L-shaped limiting groove three (15-1), so as to realize the card slot connection between the recovery push tube (15) and the connecting member (16), and a card slot two (15-2) is provided on the distal side wall of the recovery push tube (15), and a buckle two (3-1) is provided at the proximal end of the tightening block (3), and the buckle two (3-1) is snap-connected in the card slot two (15-2).

7. The ligating device for tying intestines according to claim 5, characterized in that: The invention also comprises a locator (28), a torsion spring (29) and a button (34), wherein the locator (28) is fixedly rotatably connected to the handle housing, and a hook (28-1) is extended from the upper end of the locator (28), and an L-shaped notch (26-2) is provided at the upper end of the curved rod (26). When the upper end of the curved rod (26) slides backward to the inner side of the hook (28-1), the hook (28-1) hooks the L-shaped notch (26-2), and the torsion spring (29) is sleeved on the middle part of the locator (28). One end of the torsion spring (29) abuts against the lower section of the locator (28), and the other end abuts against the upper end of the curved rod (26).

8. The ligation device for tying intestines according to claim 7, characterized in that: It also includes a return spring (24), which is connected between the push sleeve (22) and the handle housing. Under the action of the return spring (24), the push sleeve (22) is returned to the distal end of the device.

9. The ligating device for tying intestines according to claim 5, characterized in that: The cutting mechanism further comprises a rack 1 (30), a gear 1 (23), a gear 2 (31), a rack 2 (27), a firing shaft (21), a firing rod (14), a stopper (2), a push block (1), a cutting knife (10), a shaft 4 (9), a torsion spring 3 (11) and a shaft 3 (12); the firing handle (40) is provided with a section of arc-shaped teeth (40-1); the arc-shaped teeth (40-1) mesh with the teeth on the rack 1 (30); the teeth on the rack 1 (30) also mesh with the teeth on the gear 1 (23); the gear 1 (23) and the gear 2 (31) are coaxially fixedly connected. The teeth on the second gear (31) mesh with the teeth on the second rack (27), and a driving block (27-1) extends from the side of the second rack (27). The driving block (27-1) is snap-connected with the proximal end of the firing shaft (21). The firing shaft (21) is slidably inserted into the inner hole of the push sleeve (22), and the distal end of the firing shaft (21) abuts against the proximal end of the firing rod (14). The firing rod (14) is slidably inserted into the closing push tube (17), the connecting member (16), and the recovery push tube (15). The distal end of the firing rod (14) is in contact with the proximal end of the limit member (2). The limiting member (2) is connected to the push block (1) by rotation at the end, a limiting protrusion (2-1) extends upward on the upper side of the limiting member (2), and the pushing block (1) is provided with a limiting groove (1-1) corresponding to the number and position of the limiting protrusion (2-1), and the limiting protrusion (2-1) extends into the limiting groove (1-1) to realize the limiting connection between the limiting member (2) and the pushing block (1), the limiting member (2) and the pushing block (1) are slidably arranged in the recovery push tube (15), and the cutting knife (10) is a Z-shaped structural plate, and the middle part of the cutting knife (10) is rotatably connected with the tightening block (3) through the shaft four (9). Then, a V-shaped sharp knife (10-1) is provided on the distal end of the cutting knife (10), the V-shaped sharp knife (10-1) is located below the extension end (4-3), and the cutting edge of the V-shaped sharp knife (10-1) faces the extension end (4-3), and a torsion spring three (11) and a shaft three (12) are provided below the proximal end of the cutting knife (10), the shaft three (12) is fixed on the tightening block (3), and the torsion spring three (11) is rotatably arranged on the shaft three (12), and the two ends of the torsion spring three (11) respectively abut against the proximal end of the cutting knife (10) and the bottom of the tightening block (3).

10. The ligating device for tying intestines according to claim 9, characterized in that: The cutting mechanism further comprises a second return spring (35), the upper end of the second return spring (35) being fixed to the inner end of the firing handle (40), and the lower end being fixed to the handle housing. Under the action of the second return spring (35), the outer end of the firing handle (40) is turned upward and returned to its original position.

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