A manual elastic thread switching mechanism for an anorectal ligation device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a manual elastic line switching mechanism for anorectal ligation device, including the casing, the top of casing is equipped with two or more than two mounting holes, the inside of mounting hole is slidably installed with the press switch, the top of press switch projects outward and is located outside the casing, the bottom of press switch is connected with the first hook, the bottom of first hook is equipped with the hook line notch. The casing is rotatably installed with the winding roller, the second hook is installed on the winding roller, and the second hook is matched with the first hook. The utility model discloses a plurality of first hooks for hanging line are arranged on the casing, and the press switch is used for driving the first hook to move up and down, when the press switch is pressed downward, along with the rotation of the second hook, the elastic line is hooked and tightened by the second hook, and one ligation is completed after cutting off the elastic line. By pressing different press switches in turn, the effect of switching elastic line can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a manual elastic thread switching mechanism for anorectal ligation devices. Background Technology

[0002] The rectal ligator is an important medical device used to treat diseases such as hemorrhoids. The main working principle of the rectal ligator is to form a tight loop around the diseased tissue using the ligating head, thereby blocking blood flow to the diseased tissue, causing it to necrose and eventually detach. The advantages of using this device for ligation are its ease of operation and low probability of complications.

[0003] In the process of using rectal ligation devices, it is usually necessary to ligate multiple lesions. Looking at the existing rectal ligation device solutions, most currently available devices only have one elastic thread, meaning they cannot be reused after ligating one lesion. If multiple lesions from the same patient need to be ligated, multiple ligation devices must be changed, which is cumbersome and consumes a lot of medical equipment. To address this, the inventors have proposed a rectal ligation device capable of carrying multiple elastic threads, enabling the ligation of multiple lesions without changing the device. Therefore, the problem of how to switch between elastic threads urgently needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a manual elastic thread switching mechanism for anorectal ligation devices to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows: A manual elastic cord switching mechanism for anorectal ligation device includes a housing, with two or more mounting holes through the top of the housing. A push switch is slidably installed in the mounting holes. The top of the push switch protrudes outward and is located outside the housing. The bottom of the push switch is connected to a first hook, and the bottom of the first hook has a hook wire notch. A winding roller driven by a drive assembly is rotatably installed inside the housing. The winding roller is located below the first hook, and a second hook is installed on the winding roller. The second hook cooperates with the first hook.

[0006] As a further improvement, the first hook includes a first rod and a first hook. The bottom of the first rod is provided with a hook line notch that runs through the front and back, and the two side walls of the hook line notch extend vertically backward to form the first hook. The second hook includes a second rod and a second hook, with the top of the second rod extending backward to form the second hook.

[0007] As a further improvement, multiple first rods are arranged vertically and spaced apart from each other, with the position of the first hook of the first hook near the vertical center of the winding roller being higher than the position of the first hook of the first hook away from the vertical center of the winding roller.

[0008] As a further improvement, the push switch includes a cylindrical connecting rod and a push cap. The outer diameter of the push cap is larger than the outer diameter of the connecting rod. The bottom of the connecting rod is fixedly connected to the top of the first hook, and the top of the connecting rod is fixedly connected to the bottom of the push cap. A baffle is fixedly provided inside the housing. The baffle has a through hole for the connecting rod to slide through. A compression spring is sleeved on the outer wall of the connecting rod. One end of the compression spring abuts against the upper surface of the baffle, and the other end abuts against the bottom of the push cap. The lower surface of the baffle abuts against the top of the first hook. The side wall of the pressing cap is provided with a vertically protruding stop, the stop is located inside the housing and the upper surface of the stop abuts against the inner wall of the housing.

[0009] As a further improvement, the drive assembly includes a first bevel gear fixedly connected to one end of the winding roller, a motor fixedly mounted on the housing, and a second bevel gear fixedly connected to the output end of the motor, with the first bevel gear meshing with the second bevel gear.

[0010] As a further improvement, an annular winding groove is provided on the circumferential side of the winding roller, and the bottom of the first hook is fixedly connected to the bottom wall of the winding groove.

[0011] As a further improvement, an elastic cord is attached to the first hook, with one end of the elastic cord tied into a first knot and attached to the first hook.

[0012] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows: This utility model provides a manual elastic cord switching mechanism for anorectal ligation devices. It features multiple first hooks on the housing for attaching the cord, and a push-button switch that moves the first hooks up and down. When the push-button switch is pressed down, the first knot of the elastic cord is hooked by a second hook located below the first hook, tightening and cutting the elastic cord to complete one ligation. By pressing different push-button switches sequentially, the elastic cord can be switched. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first hook and the push-button switch of this utility model; Figure 3 This is an assembly diagram of the second hook of this utility model; Figure 4 This is an assembly diagram of the elastic cord and the first hook of this utility model; Figure 5 This is a schematic diagram of the assembly of the second hook and the winding groove of this utility model.

[0014] Wherein: 1-shell, 101-baffle, 2-first hook, 201-first rod, 202-first hook, 203-hook wire notch, 3-press switch, 301-connecting rod, 302-press cap, 303-compression spring, 304-stop block, 4-elastic wire, 401-first knot, 5-second hook, 501-second rod, 502-second hook, 6-drive assembly, 601-winding roller, 6011-winding groove, 602-first bevel gear, 603-motor, 604-second bevel gear. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0016] like Figure 1-5 As shown, a manual elastic cord switching mechanism for anorectal ligation device includes a housing 1. The top of the housing 1 has two or more mounting holes. A push switch 3 is slidably installed in the mounting holes. The top of the push switch 3 protrudes outward and is located outside the housing 1. The bottom of the push switch 3 is connected to a first hook 2. The bottom of the first hook 2 has a hook wire notch 203.

[0017] A winding roller 601 driven by a drive assembly 6 is rotatably installed inside the housing 1. The winding roller 601 is located below the first hook 2. A second hook 5 is installed on the winding roller 601, and the second hook 5 cooperates with the first hook 2.

[0018] In this article, for the sake of clarity and convenience, the following will be used: Figure 4 The directions shown are defined as up, down, left, right, etc.

[0019] The first hook 2 is used to attach the elastic cord 4. Specifically, one end of the elastic cord 4 is tied into a first knot 401 and hooked onto the first hook 2, while the other end is tied into a second knot and looped around the base of the lesion tissue. Initially, the bottoms of all the first hooks 2 are higher than the tops of the second hooks 5, preventing the second hooks 5 from hooking the first knot 401. In use, pressing the push switch 3 causes the first hooks 2 to move downwards simultaneously, and the drive assembly 6 rotates the second hooks 5. During rotation, the second hooks 5 hook the first knot 401 and rotate it, causing the elastic cord 4 to wrap around the winding roller 601 and gradually tighten. Once the elastic cord 4 is tightened to a suitable tension, it is cut. By pressing the remaining push switches 3 in sequence and repeating the above steps, multiple elastic cords 4 can be switched and multiple lesions can be ligated.

[0020] In this embodiment, the first hook 2 includes a first rod portion 201 and a first hook portion 202. The bottom of the first rod portion 201 is provided with a hook line notch 203 through which the second hook 5 passes. The two side walls of the hook line notch 203 extend vertically backward to form the first hook portion 202. The first knot 401 of the elastic line 4 is hung on the first hook portion 202.

[0021] The second hook 5 includes a second rod portion 501 and a second hook portion 502, with the top end of the second rod portion 501 extending rearward to form the second hook portion 502. During use, the top end of the second hook portion 502 is lower than the top end of the first hook portion 202 and higher than the bottom end of the first hook portion 202, and the second hook portion 502 is used to hook the first knot 401.

[0022] In this embodiment, multiple first rod portions 201 are vertically arranged and spaced apart. The position of the first hook portion 202 of the first hook 2 near the vertical center of the winding roller 601 is higher than the position of the first hook portion 202 away from the vertical center of the winding roller 601. This ensures that when the push switch 3 is pressed down by the same distance, the second hook 5 can hook the corresponding first knot 401.

[0023] In this embodiment, the push switch 3 includes a cylindrical connecting rod 301 and a push cap 302. The outer diameter of the push cap 302 is larger than the outer diameter of the connecting rod 301. The bottom of the connecting rod 301 is fixedly connected to the top of the first hook 2, and the top of the connecting rod 301 is fixedly connected to the bottom of the push cap 302. A baffle 101 is fixedly provided inside the housing 1. The baffle 101 has a through hole for the connecting rod 301 to slide through. A compression spring 303 is sleeved on the outer side wall of the connecting rod 301. One end of the compression spring 303 abuts against the upper surface of the baffle 101, and the other end abuts against the bottom of the push cap 302. The lower surface of the baffle 101 abuts against the top of the first hook 2.

[0024] The engagement point between the press cap 302 and the connecting rod 301 forms a positioning step, which can provide force support for the compression spring 303. In specific implementation, the top surface of the press cap 302 can be marked with numbers or symbols to indicate the order of use, in order to distinguish different press switches 3 and spring wires 4, and to prevent accidental activation of the press switch 3 during use, which could cause the different spring wires 4 to become tangled.

[0025] In this embodiment, a vertically protruding stop 304 is provided on the side wall of the press cap 302, and the upper surface of the stop 304 abuts against the inner wall of the housing 1. The stop 304 is used to limit the installation position of the press cap 302 and prevent the press switch 3 from sliding out of the mounting hole.

[0026] In this embodiment, the drive assembly 6 includes a winding roller 601 rotatably connected to the housing 1, a first hook 2 fixedly connected to the winding roller 601, a first bevel gear 602 fixedly connected to one end of the winding roller 601, a motor 603 fixedly mounted on the housing 1, a second bevel gear 604 fixedly connected to the output end of the motor 603, and the first bevel gear 602 and the second bevel gear 604 meshing together.

[0027] Motor 603 drives the second bevel gear 604 to rotate, the second bevel gear 604 drives the first bevel gear 602 and the winding roller 601 to rotate, the winding roller 601 drives the second hook 5 to rotate, and after the second hook 5 hooks the first knot 401, the elastic line 4 is wound around the winding roller 601, thereby tightening the elastic line 4.

[0028] In this embodiment, an annular winding groove 6011 is provided on the circumferential side of the winding roller 601, and the bottom of the second hook 5 is fixedly connected to the bottom wall of the winding groove 6011. The winding groove 6011 is used to limit the winding position of the elastic wire 4 and prevent the elastic wire 4 from slipping off the winding roller 601.

[0029] In this embodiment, an elastic cord 4 is hung on the first hook 2. One end of the elastic cord 4 is knotted to form a first knot 401 and hung on the first hook 202. When the second hook 5 rotates to the position of the hook line notch 203, the second hook 5 hooks the first knot 401, and the first knot 401 is transferred to the second hook 5 and rotates synchronously with the second hook 5.

[0030] In this embodiment, when the press switch 3 is pressed, the first hook 2 and the first knot 401 of the elastic cord 4 move downwards a certain distance. The motor 603 drives the second bevel gear 604 to rotate, which in turn drives the first bevel gear 602, the winding roller 601, and the first hook 2 to rotate. The first hook 2 passes through the hook notch 203 and hooks the first knot 401, causing the first knot 401 to rotate. The elastic cord 4 wraps around the winding roller 601 one turn at a time and is gradually tightened. When the elastic cord 4 is tightened to a suitable force, it is cut. By pressing the remaining press switches 3 in sequence and repeating the above steps, multiple elastic cords 4 can be switched and multiple lesions can be ligated.

[0031] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A manual elastic string switching mechanism for an anorectal ligation device, comprising a housing, characterized in that, The top of the housing has two or more mounting holes, and a push switch is slidably installed in the mounting holes. The top of the push switch protrudes outward and is located outside the housing. The bottom of the push switch is connected to a first hook, and the bottom of the first hook has a hook line notch. A winding roller driven by a drive assembly is rotatably mounted inside the housing. The winding roller is located below the first hook, and a second hook is mounted on the winding roller, which cooperates with the first hook.

2. The manual elastic string switching mechanism for an anorectal ligation device according to claim 1, wherein The first hook includes a first rod portion and a first hook portion. The bottom of the first rod portion is provided with a hook line notch extending through it from front to back. The two side walls of the hook line notch extend vertically backward to form the first hook portion. The second hook includes a second rod portion and a second hook portion, wherein the top end of the second rod portion extends rearward to form the second hook portion.

3. The manual elastic string switching mechanism for an anorectal ligation device according to claim 2, wherein The first rod portion of the first hook is vertically arranged and spaced apart from each other. The position of the first hook portion of the first hook near the vertical center of the winding roller is higher than the position of the first hook portion of the first hook away from the vertical center of the winding roller.

4. The manual elastic thread changing mechanism for an anorectal ligation device according to claim 1, wherein The push-button switch includes a cylindrical connecting rod and a push-button cap. The outer diameter of the push-button cap is larger than the outer diameter of the connecting rod. The bottom of the connecting rod is fixedly connected to the top of the first hook, and the top of the connecting rod is fixedly connected to the bottom of the push-button cap. A baffle is fixedly provided inside the housing. The baffle has a through hole for the connecting rod to slide through. A compression spring is sleeved on the outer wall of the connecting rod. One end of the compression spring abuts against the upper surface of the baffle, and the other end abuts against the bottom of the push-button cap. The lower surface of the baffle abuts against the top of the first hook. The side wall of the pressing cap is provided with a vertically outward protruding stop, the stop is located inside the housing and the upper surface of the stop abuts against the inner wall of the housing.

5. The manual elastic thread changing mechanism for an anal and intestinal ligation device according to claim 1, characterized in that, The drive assembly includes a first bevel gear fixedly connected to one end of the winding roller, a motor fixedly mounted on the housing, and a second bevel gear fixedly connected to the output end of the motor, wherein the first bevel gear and the second bevel gear mesh with each other.

6. The manual elastic string switching mechanism for an anorectal ligation device according to claim 5, wherein The winding roller has an annular winding groove on its circumferential side, and the bottom of the first hook is fixedly connected to the bottom wall of the winding groove.

7. The manual elastic thread changing mechanism for an anorectal ligation device according to claim 3, characterized in that, An elastic cord is attached to the first hook, and one end of the elastic cord is knotted to form a first knot and hung on the first hook.

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