Automatic thread breaking mechanism of anorectal loop ligature device

Abstract

The utility model relates to the technical field of medical instruments, and discloses an automatic wire breaking mechanism of an anorectal loop ligature device. One end of the coil flexible rope is connected with the base frame, and the other end of the coil flexible rope is connected with a coil of the anorectal loop ligature device; the cutting-off structure comprises a cutter arranged on the base frame, and the cutter is provided with a cutting edge suitable for cutting off the coil flexible cable; the driving structure is in sliding connection with the base frame and is suitable for driving the coil flexible rope to be in contact with the cutting edge of the cutter. By arranging the structure capable of automatically cutting off the redundant wire ends of the coil, the surgical operation steps are simplified, and multiple medical workers do not need to cooperate for operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an automatic wire-breaking mechanism for an anorectal ligator. Background Art

[0002] An anorectal ligator is a medical device used for the treatment of anorectal diseases. Its main functions include tightening the tissues and blood vessels at the diseased site by means of ligation, forcing the affected area to stop bleeding or forcing the affected area to necrose and fall off, so as to achieve the purpose of hemostasis or treatment.

[0003] In the related art, the ligation components mainly include two types: rubber band ligation and coil ligation. Among them, coil ligation is to tighten the affected area with a knotted coil ring that can be tightened by pulling the wire end. Medical staff tighten the coil by pulling the wire end through the instrument or manually. After completing the tightening action of the affected area, a medical staff needs to cooperate with the medical staff holding the anorectal ligator to cut off the redundant wire end on the coil.

[0004] However, in the above related art, since it is necessary to cut off the redundant wire end of the coil, the entire surgical process often requires the cooperation of two or more medical staff, which tests the cooperation tacit understanding of the medical staff, and the operation process is relatively cumbersome. Content of the Utility Model

[0005] In view of this, the utility model provides an automatic wire-breaking mechanism for an anorectal ligator. By setting a structure that can automatically cut off the redundant wire end of the coil, the surgical operation steps are simplified, and the cooperation of multiple medical staff is not required.

[0006] The utility model provides an automatic wire-breaking mechanism for an anorectal ligator, including a base frame; a coil flexible cable, one end of which is connected to the base frame, and the other end is connected to the coil of the anorectal ligator and is adapted to drive the coil to tighten; a cutting structure, including a cutter disposed on the base frame, and the cutter has a blade adapted to cut the coil flexible cable; a driving structure, which is slidably connected to the base frame, and the driving structure is adapted to drive the coil flexible cable to contact the blade of the cutter.

[0007] Beneficial Effects: The base frame provides a connection basis for other structures such as the wire-breaking mechanism of the ligator, and is convenient for medical staff to hold the device. The coil flexible cable is connected to the coil and is adapted to pull the coil and tighten the coil. By setting the driving structure, it is convenient for medical staff to pull the coil flexible cable by operating the driving structure to achieve the tightening of the coil. At the same time, the driving structure can pull the coil flexible cable to the position of the cutter and cut the coil flexible cable through the cutter. During the surgical operation process, a medical staff only needs to operate the driving structure to complete the operation of sleeving the affected area and cutting the coil flexible cable. The cooperation of multiple medical staff is not required, and the operation steps are single and simple, which can effectively improve the surgical efficiency and reduce the possibility of operation errors.

[0008] In an alternative embodiment, the cutting structure further includes a tool holder, which is slidably connected to the base frame and has a first position and a second position. An energy storage elastic member is provided on the base frame, and a pushing portion adapted to push the tool holder from the first position to the second position is provided on the driving structure. When the tool holder moves from the first position to the second position, the energy storage elastic member is deformed. At the second position, the pushing portion is separated from the tool holder, and the energy storage elastic member drives the tool holder to rebound to the first position.

[0009] Beneficial effects: By providing a tool holder slidably connected to the base frame and an energy storage elastic member matching the tool holder, when the driving structure moves, the tool holder is pushed from the first position to the second position, and the energy storage elastic member stores energy. After the tool holder reaches the second position, the energy storage elastic member releases elastic force, thereby pushing the tool holder to reset, and at the same time giving the tool an acceleration, so that the tool quickly contacts and cuts the coil flexible cable during the process of resetting with the tool holder. On the one hand, it can make the tool stably cut the flexible cable, improving the reliability of the structural function. On the other hand, the tool holder rebounds to make a sound, and the impact force of the tool holder rebounding to the designated position is transmitted to the base frame, which can provide operation feedback for medical staff together with the sound.

[0010] In an alternative embodiment, the pushing portion is an elastic member and extends along the sliding direction of the tool holder. A matching portion extending radially outward on one side of the tool holder is provided on the tool holder. The pushing portion pushes the tool holder from the first position to the second position by pushing the matching portion. A guiding block is provided on the base frame on one side of the tool holder. A first guiding inclined surface is provided on the guiding block, and the first guiding inclined surface is adapted to abut against the pushing portion and displace the pushing portion from the matching portion when the pushing portion pushes the tool holder from the first position to the second position.

[0011] Beneficial effects: Since the pushing portion is an elastic member, during the process of the pushing portion pushing the matching portion to push the tool holder from the first position to the second position, the energy storage elastic member completes energy storage, and the guiding block gradually pushes the elastic pushing portion until the pushing portion is displaced from the matching portion, so that the pushing portion loses the limit on the matching portion, and the tool holder rebounds under the action of the energy storage elastic member. The structure is simple and reliable, and can automatically release the limit of the pushing portion on the matching portion during the process of the driving structure pushing the tool holder, realizing automatic rebound of the tool holder, and the operation is simple and convenient.

[0012] In an alternative embodiment, a second guiding inclined surface is provided at a position on the pushing portion opposite to the first guiding inclined surface, and the second guiding inclined surface is adapted to the angle of the first guiding inclined surface.

[0013] Beneficial effects: The second guiding surface cooperates with the first guiding surface, enabling the guiding block to push the pushing part more stably and smoothly, and avoiding the possibility of the guiding block getting stuck or jammed with the pushing part, which may cause the structural failure.

[0014] In an alternative embodiment, a pushing block is provided at one end of the pushing part facing the mating part. A third guiding inclined surface is provided on the side wall of the pushing block opposite to the mating part, and the position of the third guiding inclined surface corresponds to that of the mating part.

[0015] Beneficial effects: When the pushing block pushes the tool holder to the second position and the pushing block is misaligned with the mating part under the action of the guiding block, since the tool holder is reset under the action of the energy storage spring member, at this time the pushing block is located on one side of the mating part facing the second position. By providing the third guiding inclined surface, during the process of the driving structure driving the pushing block to retract, through the abutment of the third guiding inclined surface with the mating part, the pushing block is pushed to one side of the mating part again, so that the pushing block is misaligned with the mating part, enabling the pushing block to be reset smoothly, and avoiding the situation of movement interference between the pushing block and the mating part due to the pushing block losing the limit of the guiding block during the reset process, thus improving the reliability of the structural function.

[0016] In an alternative embodiment, the cutting structure further includes a tool holder, which is fixedly connected to the base frame. The tool holder has a cavity inside, the energy storage elastic member is arranged in the cavity, and the tool holder is slidably engaged with the tool holder by sliding in the cavity.

[0017] Beneficial effects: By providing the tool holder, on the one hand, it provides an installation basis and accommodation space for the energy storage elastic member, and on the other hand, it also provides a structural basis for the sliding of the tool holder and the base frame, and improves the stability of the structure under the action of the movement and impact of the tool holder, making the wire-breaking structure more firm and stable.

[0018] In an alternative embodiment, a through groove communicating with the cavity is formed on the circumferential side wall of one side of the tool holder, a connecting rod extending out of the through groove is provided on the tool holder, and the cutting tool is arranged at one end of the connecting rod outside the tool holder.

[0019] Beneficial effects: By providing the through groove and the connecting rod, the cutting tool can extend out from the tool holder, improving the utilization rate of the structural space and facilitating the contact between the cutting tool and the coil flexible cable.

[0020] In an alternative embodiment, two oppositely arranged claw hooks are provided on the driving structure. The cutting edge of the cutting tool is opposite to the gap between the two claw hooks, and the coil flexible cable passes through the two claw hooks and is tensioned between the two claw hooks.

[0021] Beneficial effects: By providing two opposite claws, the claws can hook the coil cable, and the position between the two claws provides sufficient operating space for the tool to cut the coil cable. The coil cable bypasses the two claws and is tensioned under the restraint of the claws and the coil. When the tool rebounds together with the tool holder, the cutting edge of the tool extends to the position between the two claws and cuts the coil cable at this place.

[0022] In an alternative embodiment, a card slot adapted to the coil cable is provided on the claw.

[0023] Beneficial effects: By providing the card slot, it is convenient to limit the coil cable, reducing the situation where the coil cable disengages from the card slot on the claw during the movement of the claw along with the driving structure, and improving the reliability of the structural function.

[0024] In an alternative embodiment, a cable limiting frame is provided inside the base frame. The cable limiting frame includes two oppositely arranged limiting ends. The end of the coil cable far from the coil is connected to the base frame, and the coil cable bypasses the two limiting ends respectively. The movement path of the two claws along with the driving structure passes through between two adjacent limiting ends.

[0025] Beneficial effects: By providing the cable limiting frame to limit the coil cable, on the one hand, it is convenient for the claw to hook and pull the coil cable during the movement along with the driving structure. On the other hand, by limiting the part of the coil cable inside the base frame, it is avoided that the coil cable is disturbed inside the base frame and interferes with the movement of other structures, resulting in knotting or the movement of other structures being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the position and structure of an automatic wire-breaking mechanism of an anorectal ligator in the state of being installed on an anorectal ligator in this embodiment;

[0028] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0029] Figure 3 It is a schematic diagram of the position and structure of an automatic wire-breaking mechanism of an anorectal ligator in this embodiment for showing the cutting structure and the driving structure;

[0030] Figure 4 Schematic diagram for reflecting the positions and structures of the pushing part and the cooperating part of an automatic wire cutting mechanism of an anorectal ligator according to this embodiment;

[0031] Figure 5 Schematic diagram for reflecting the cutting structure of an automatic wire cutting mechanism of an anorectal ligator according to this embodiment.

[0032] Description of reference numerals:

[0033] 100, base frame; 101, guide block; 1011, first guiding inclined surface; 102, flexible cable limiting frame; 1021, limiting end; 200, coil flexible cable; 300, cutting structure; 301, cutter; 302, tool holder; 3021, cooperating part; 3022, connecting rod; 303, energy storage elastic part; 304, tool rest; 305, through groove; 400, driving structure; 401, pushing part; 4011, second guiding inclined surface; 402, pushing block; 4021, third guiding inclined surface; 403, claw; 4031, clamping groove. Detailed implementation manners

[0034] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] The following combines with Figures 1 to 5 to describe the embodiments of the present utility model.

[0036] According to an embodiment of the present utility model, an automatic wire cutting mechanism of an anorectal ligator is provided. Please refer to Figures 1 to 3 , which includes a base frame 100; a coil flexible cable 200, one end of which is connected to the base frame 100 and the other end is connected to the coil of the anorectal ligator and is adapted to drive the coil to tighten; a cutting structure 300, including a cutter 301 disposed on the base frame 100, and the cutter 301 has a cutting edge adapted to cut the coil flexible cable 200; a driving structure 400, which is slidably connected to the base frame 100, and the driving structure 400 is adapted to drive the coil flexible cable 200 to contact the cutting edge of the cutter 301.

[0037] In this embodiment, the base frame 100 provides a connection foundation for other structures such as the wire-breaking mechanism of the ligator, and is convenient for medical staff to hold the device. The coil flexible cable 200 is connected to the coil, suitable for pulling the coil and tightening the coil. By setting the driving structure 400, it is convenient for medical staff to pull the coil flexible cable 200 by operating the driving structure 400 to realize the tightening of the coil. At the same time, the driving structure 400 can pull the coil flexible cable 200 to the position of the cutter 301 and cut the coil flexible cable 200 through the cutter 301. During the surgical operation, only one medical staff needs to operate the driving structure 400 to complete the operation of extracting the affected area and cutting the coil flexible cable 200, without the cooperation of multiple medical staff, and the operation steps are single and simple, which can effectively improve the surgical efficiency and reduce the possibility of operation errors.

[0038] In the above embodiment, it should be noted that the base frame 100 can be the housing of the anorectal ligator. The housing is made into a pistol-shaped structure with a handle. The driving structure 400 can be in the shape of a trigger and is located on the front side of the handle, which is convenient for medical staff to hold and operate. In some embodiments not shown, the base frame 100 can also be of other shapes. Correspondingly, it can provide an installation foundation for other components of the anorectal ligator and be convenient for medical staff to hold. The driving structure 400 can also be of other forms.

[0039] Specifically, the above embodiment does not limit the specific form of the coil flexible cable 200 pulling the coil and tightening the coil. As long as the coil can be tightened when the coil flexible cable 200 is pulled by the driving structure 400.

[0040] In addition, specifically, the driving structure 400 is slidably connected to the base frame 100 through the cooperation of a slider and a chute, and a return spring is provided on the driving structure 400. One end of the return spring is connected to the base frame 100, and the other end is connected to the driving structure 400. Thus, after the medical staff removes the external force on the driving structure 400, the driving structure 400 can return to its original position under the action of the return spring, further improving the convenience of the device operation.

[0041] In one embodiment, please refer to Figures 3 to 5 , the cutting structure 300 further includes a tool holder 302. The tool holder 302 is slidably connected to the base frame 100 and has a first position and a second position. An energy storage elastic member 303 is provided on the base frame 100. A pushing portion 401 suitable for pushing the tool holder 302 from the first position to the second position is provided on the driving structure 400. When the tool holder 302 moves from the first position to the second position, the energy storage elastic member 303 deforms. At the second position, the pushing portion 401 is separated from the tool holder 302, and the energy storage elastic member 303 drives the tool holder 302 to rebound to the first position.

[0042] It should be noted that the tool holder 302 is located at the first position in its natural state without being subjected to external forces.

[0043] In this embodiment, by providing a tool holder 302 slidably connected to the base frame 100 and a energy storage elastic member 303 matching the tool holder 302, when driving the saving movement, the tool holder 302 is pushed from the first position to the second position, and the energy storage elastic member 303 stores energy. After the tool holder 302 reaches the second position, the energy storage elastic member 303 releases its elastic force, thereby pushing the tool holder 302 to reset, and at the same time giving the tool 301 an acceleration, so that the tool 301 quickly contacts and cuts the coil flexible cable 200 during the process of resetting with the tool holder 302. On the one hand, it can make the tool 301 stably cut the flexible cable, improving the reliability of the structural function. On the other hand, the tool holder 302 rebounds to make a sound, and the impact force of the tool holder 302 rebounding to the designated position is transmitted to the base frame 100, which can provide operation feedback for medical staff together with the sound.

[0044] In one embodiment, the pushing part 401 is an elastic member and extends along the sliding direction of the tool holder 302. A matching part 3021 protruding toward one circumferential side of the tool holder 302 is provided on the tool holder 302. The pushing part 401 pushes the tool holder 302 from the first position to the second position by pushing the matching part 3021. A guiding block 101 is provided on the base frame 100 on one side of the tool holder 302. A first guiding inclined surface 1011 is provided on the guiding block 101. The first guiding inclined surface 1011 is adapted to abut against the pushing part 401 and displace the pushing part 401 from the matching part 3021 when the pushing part 401 pushes the tool holder 302 from the first position to the second position.

[0045] Specifically, the pushing part 401 is rod-shaped, one end of which is connected to the driving structure 400, and the other end is arranged toward the direction of the tool holder 302. During the process of the pushing part 401 pushing the tool holder 302, the pushing part 401 abuts against the matching part 3021 and also abuts against the guiding block 101. The guiding block 101 gradually presses the pushing part 401, causing the pushing part 401 to bend and incline toward the side away from the guiding block 101. When the tool holder 302 reaches the second position, the end of the pushing part 401 is displaced from the matching part 3021.

[0046] In this embodiment, since the pushing part 401 is an elastic member, during the process of the pushing part 401 pushing the mating part 3021 to push the tool holder 302 from the first position to the second position, the energy storage elastic member 303 stores energy, and the guiding block 101 gradually pushes the elastic pushing part 401 until the pushing part 401 is misaligned with the mating part 3021, so that the pushing part 401 loses the limit on the mating part 3021, and the tool holder 302 rebounds under the action of the energy storage elastic member 303. The structure is simple and reliable, and can automatically release the limit of the pushing part 401 on the mating part 3021 during the process of the driving structure 400 pushing the tool holder 302, realizing the automatic rebound of the tool holder 302, and the operation is simple and convenient.

[0047] In one embodiment, a second guiding inclined surface 4011 is provided at a position on the pushing part 401 opposite to the first guiding inclined surface 1011, and the second guiding inclined surface 4011 is adapted to the first guiding inclined surface 1011 in terms of angle.

[0048] In this embodiment, the cooperation between the second guiding surface and the first guiding surface can make the pushing of the guiding block 101 on the pushing part 401 more stable and smooth, avoiding the possibility of jamming or sticking between the guiding block 101 and the pushing part 401, which may lead to the failure of the structure.

[0049] In one embodiment, a pushing block 402 is provided at one end of the pushing part 401 facing the mating part 3021, and a third guiding inclined surface 4021 is provided on the side wall of the pushing block 402 opposite to the mating part 3021, and the position of the third guiding inclined surface 4021 corresponds to that of the mating part 3021.

[0050] In this embodiment, when the pushing block 402 pushes the tool holder 302 to the second position and the pushing block 402 is misaligned with the mating part 3021 under the action of the guiding block 101, since the tool holder 302 is reset under the action of the energy storage spring member, at this time the pushing block 402 is located on the side of the mating part 3021 facing the second position. By providing the third guiding inclined surface 4021, during the process of the driving structure 400 driving the pushing block 402 to retract, through the abutment of the third guiding inclined surface 4021 and the mating part 3021, the pushing block 402 is pushed to the side of the mating part 3021 again, so that the pushing block 402 is misaligned with the mating part 3021, enabling the pushing block 402 to be reset smoothly, and avoiding the situation of movement interference between the pushing block 402 and the mating part 3021 due to the pushing block 402 losing the limit of the guiding block 101 during the reset process, thus improving the reliability of the structural function.

[0051] In one embodiment, the cutting structure 300 further includes a tool rest 304, the tool rest 304 is fixedly connected to the base frame 100, the tool rest 304 has a cavity inside, the energy storage elastic member 303 is arranged in the cavity, and the tool holder 302 is slidably engaged with the tool rest 304 by sliding in the cavity.

[0052] Specifically, the energy storage elastic member 303 can be a compression spring or other elastic components. The tool rest 304 is a cuboid-shaped housing. One end of the energy storage elastic member 303 is connected to the inner wall of the cavity, and the other end abuts against the tool holder 302. The cross-section of the cavity matches the outer dimensions of the tool holder 302, so as to stably slide with the tool holder 302.

[0053] In this embodiment, by setting the tool rest 304, on the one hand, it provides an installation basis and accommodation space for the energy storage elastic member 303, and on the other hand, it also provides a structural basis for the sliding of the tool holder 302 and the base frame 100, and improves the stability of the structure under the action of the movement and impact of the tool holder 302, making the wire-breaking structure more firm and stable.

[0054] In one embodiment, a through groove 305 communicating with the cavity is provided on one side wall in the circumferential direction of the tool rest 304. A connecting rod 3022 extending out of the through groove 305 is provided on the tool holder 302, and the tool 301 is arranged at one end of the connecting rod 3022 outside the tool rest 304.

[0055] In this embodiment, by setting the through groove 305 and the connecting rod 3022, the tool 301 can extend out from the tool rest 304, improving the utilization rate of the structural space and facilitating the contact between the tool 301 and the coil flexible cable 200.

[0056] Specifically, the groove length direction of the through groove 305 is arranged along the sliding direction of the tool holder 302.

[0057] In one embodiment, two oppositely arranged claw hooks 403 are provided on the driving structure 400. The cutting edge of the tool 301 faces the gap between the two claw hooks 403, and the coil flexible cable 200 passes through the two claw hooks 403 and is tensioned between the two claw hooks 403.

[0058] In this embodiment, by setting two opposite claw hooks 403, the claw hooks 403 can hook the coil flexible cable 200, and the position between the two claw hooks 403 provides sufficient operating space for the tool 301 to cut the coil flexible cable 200. The coil flexible cable 200 bypasses the two claw hooks 403 and is tensioned under the restraint of the claw hooks 403 and the coil. When the tool 301 rebounds together with the tool holder 302, the cutting edge of the tool 301 extends into the position between the two claw hooks 403 and cuts the coil flexible cable 200 at this place.

[0059] In one embodiment, a card slot 4031 adapted to the coil flexible cable 200 is provided on the claw hook 403.

[0060] In this embodiment, by providing the card slot 4031, it is convenient to limit the coil flexible cable 200, reducing the situation where the coil flexible cable 200 disengages from the card slot 4031 on the claw 403 during the movement of the claw 403 along with the driving structure 400, and improving the reliability of the structural function.

[0061] In one embodiment, a flexible cable limiting frame 102 is provided inside the base frame 100. The flexible cable limiting frame 102 includes two oppositely arranged limiting ends 1021. The end of the coil flexible cable 200 far from the coil is connected to the base frame 100, and the coil flexible cable 200 respectively bypasses the two limiting ends 1021. The movement paths of the two claws 403 along with the driving structure pass through between the two adjacent limiting ends 1021.

[0062] Specifically, the limiting end 1021 is a vertical plate and a limiting groove opened on the vertical plate, and the limiting groove matches the coil flexible cable 200.

[0063] In this embodiment, by providing the flexible cable limiting frame 102 to limit the coil flexible cable 200, on the one hand, it is convenient for the claw 403 to hook and pull the coil flexible cable 200 during the movement along with the driving structure 400. On the other hand, by limiting the part of the coil flexible cable 200 inside the base frame 100, it is avoided that the coil flexible cable 200 is disturbed inside the base frame 100 and has movement interference with other structures, resulting in knotting or causing the movement of other structures to be stuck.

[0064] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An automatic wire-breaking mechanism for anorectal ligation device, characterized in that: include: Scaffolding; A coil flexible cable, one end of which is connected to the base frame, and the other end of which is connected to the coil of the anorectal ligation device, and is suitable for driving the coil to tighten; A cutting structure, comprising a cutter disposed on the base frame, the cutter having a blade suitable for cutting the coiled flexible cable; A driving structure is slidably connected to the base frame, and the driving structure is suitable for driving the coil cable to contact the blade of the tool.

2. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 1, characterized in that: The cutting structure also includes a knife seat, which is slidably connected to the base and has a first position and a second position. The base is provided with an energy storage elastic member, and the driving structure is provided with a pushing portion suitable for pushing the knife seat from the first position to the second position. When the knife seat moves from the first position to the second position, the energy storage elastic member is deformed. In the second position, the pushing portion is separated from the knife seat, and the energy storage elastic member drives the knife seat to rebound to the first position.

3. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 2, characterized in that: The pushing portion is an elastic member and extends along the sliding direction of the knife seat. The knife seat is provided with a matching portion extending to one side of the circumference of the knife seat. The pushing portion pushes the knife seat from the first position to the second position by pushing the matching portion. The base frame is provided with a guide block at one side of the knife seat. The guide block is provided with a first guide slope. The first guide slope is suitable for abutting against the pushing portion and causing the pushing portion to be misaligned with the matching portion when the pushing portion pushes the knife seat from the first position to the second position.

4. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 3, characterized in that: A second guiding inclined surface is provided on the pushing portion at a position opposite to the first guiding inclined surface, and the angle of the second guiding inclined surface is adapted to that of the first guiding inclined surface.

5. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 3, characterized in that: A pushing block is provided at one end of the pushing portion facing the matching portion, and a third guiding inclined surface is provided on a side wall of the pushing block opposite to the matching portion, and the position of the third guiding inclined surface corresponds to the matching portion.

6. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 2, characterized in that: The cutting structure also includes a tool holder, which is fixedly connected to the base frame. The tool holder has a cavity inside, and the energy storage elastic member is arranged in the cavity. The tool seat slides in the cavity to slide with the tool holder.

7. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 6, characterized in that: A through slot communicating with the cavity is provided on a circumferential side wall of the tool holder, a connecting rod extending out of the through slot is provided on the tool seat, and the tool is arranged at one end of the connecting rod located outside the tool holder.

8. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 1, characterized in that: The driving structure is provided with two hooks arranged opposite to each other, the blade of the tool is opposite to the gap between the two hooks, and the coil cable passes through the two hooks and is tensioned between the two hooks.

9. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 8, characterized in that: The hook claw is provided with a slot adapted to the coil flexible cable.

10. The automatic wire-breaking mechanism of the anorectal ligation device according to claim 9, characterized in that: A flexible cable limit frame is provided in the base frame, and the flexible cable limit frame includes two relatively arranged limit ends. One end of the coil flexible cable away from the coil is connected to the base frame, and the coil flexible cable bypasses the two limit ends respectively. The two hooks pass between the two adjacent limit ends along the path of movement of the driving structure.

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