A hot cutting-off elastic thread mechanism for an anorectal ligation device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a hot scalding cutting elastic line mechanism for anorectal ligation device, including the connecting pipe, the one end of connecting pipe connects the ligation head, is equipped with the threading hole on the lateral wall of ligation head and penetrates, is equipped with the rotating sleeve in the inside of connecting pipe, one end of rotating sleeve connects the rotation drive assembly, the other end of rotating sleeve connects the hot melting subassembly, and the hot melting subassembly is matched with the threading hole. This embodiment sets up hot melting subassembly and rotation drive assembly respectively at both ends of rotating sleeve, the heating wire of hot melting subassembly is connected after power, produces the required temperature in a short time, and rotation drive assembly drives rotating sleeve and hot melting subassembly to rotate, when the heating wire contacts elastic line, can melt elastic line. The technical scheme not only saves the operation of manual cutting elastic line, reduces the difficulty of ligation operation, but also can be completed by a single person, simplifies the configuration of operating personnel.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a heat-cutting elastic thread cutting 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] During the ligation process using a banding device, after the elastic thread is placed on the lesion tissue, it needs to be cut. Most existing solutions for anorectal ligation devices are performed manually, which can easily damage the mucosa near the hemorrhoids, further exacerbating the patient's pain. Due to the difficulty of the operation, it demands a high level of experience and skill from the operator. In some cases, two people are needed to complete the procedure, consuming significant medical resources. Therefore, it is necessary to improve existing anorectal ligation devices to reduce the difficulty of cutting the elastic thread during the ligation process. Utility Model Content

[0004] The purpose of this invention is to provide a heat-cutting elastic thread cutting 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 heat-cutting elastic thread mechanism for anorectal ligation device includes a connecting tube, one end of which is connected to a ligation head. A threading hole is provided through the side wall of the ligation head, one end of which opens into the interior of the connecting tube. A rotating sleeve is rotatably provided inside the connecting tube. One end of the rotating sleeve is connected to a rotation drive assembly, and the other end of the rotating sleeve is connected to a heat fusion assembly. The heat fusion assembly cooperates with the threading hole.

[0006] As a further improvement, the hot melt assembly includes a heating wire, both ends of which are fixedly connected to one end of the rotating sleeve via support arms, and the heating wire mates with the wire threading hole.

[0007] As a further improvement, the rotary drive assembly includes a motor, a first gear fixedly mounted on the output shaft of the motor, and a second gear fixedly mounted on the outer wall of the rotary sleeve, with the first gear meshing with the second gear.

[0008] As a further improvement, the ligature head has an internal suction chamber for accommodating lesion tissue. The two ends of the suction chamber are the suction end and the connection end, respectively. The suction end has an open structure. The inner part of the end face of the connection end extends axially to form a cylindrical connection part for connecting the tubing. The outer part of the end face of the connection end is a hot-cut surface. One end of the thread hole opens onto the hot-cut surface.

[0009] As a further improvement, two or more threading holes are arranged in an arc shape with the axis of the connection as the center on the hot-cut surface of the tying head.

[0010] As a further improvement, the rotating sleeve is a metal round tube, and the outer wall of the rotating sleeve is rotatably fitted with the inner wall of the connecting tube.

[0011] 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 heat-cutting elastic wire cutting mechanism for anorectal ligation devices, which consists of a heat-fusion assembly and a rotation drive assembly at both ends of a rotating sleeve. After the heating wire of the heat-fusion assembly is powered on, it generates the required temperature within a short time. The rotation drive assembly drives the rotating sleeve and the heat-fusion assembly to rotate. When the heating wire contacts the elastic wire, it melts and cuts the elastic wire. This technical solution not only eliminates the need for manual cutting of the elastic wire, reducing the difficulty of the ligation operation, but also allows for operation by a single person, simplifying the operator setup. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an assembly diagram of the hot melt assembly and the sleeving head of this utility model; Figure 3 This is a schematic diagram of the structure of the hot melt assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the tying head of this utility model.

[0013] Wherein: 1-connecting tube, 2-sleeving head, 201-threading hole, 202-suction chamber, 203-suction end, 204-connecting end, 205-connecting part, 206-hot cut surface, 3-rotating sleeve, 4-rotating drive assembly, 401-motor, 402-first gear, 403-second gear, 5-hot melt assembly, 501-heating wire, 502-support arm. Detailed Implementation

[0014] 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.

[0015] like Figure 1-4 As shown, a heat-cutting elastic thread cutting mechanism for anorectal ligation includes a connecting tube 1, one end of which is connected to a ligation head 2. A threading hole 201 is provided through the side wall of the ligation head 2, one end of which opens into the interior of the connecting tube 1. A rotating sleeve 3 is rotatably provided inside the connecting tube 1. One end of the rotating sleeve 3 is connected to a rotation drive assembly 4, and the other end of the rotating sleeve 3 is connected to a heat-melting assembly 5. The heat-melting assembly 5 cooperates with the threading hole 201.

[0016] In practical use, an elastic thread is threaded through the thread hole 201. The rotary drive assembly 4 drives the rotary sleeve 3 to rotate, and the rotary sleeve 3 drives the thermoplastic assembly 5 to rotate. As the thermoplastic assembly 5 approaches the elastic thread, the high temperature generated melts the elastic thread in contact with it. The elastic thread is made of polyester and latex, which not only has good elasticity and extensibility, but also has a soft texture, which can avoid irritating the mucosa around the lesion tissue.

[0017] In this embodiment, the hot melt assembly 5 includes a heating wire 501. Both ends of the heating wire 501 are fixedly connected to one end of the rotating sleeve 3 via support arms 502. The heating wire 501 cooperates with the wire hole 201. The support arm 502 is made of rigid metal wire and is used to support the heating wire 501.

[0018] In practical use, the heating wire 501 is connected to the heating power supply via a wire arranged along the support arm 502. After the heating power is turned on, the heating wire 501 can heat to the required temperature in a short time. During rotation, the heating wire 501 will pass laterally across the opening of the wire hole 201 and melt the elastic wire passing through the wire hole 201. The heating wire 501 is suspended and does not directly contact the connecting pipe 1 or the sleeve head 2. The high temperature generated by the heating wire 501 will not affect the normal operation of the connecting pipe 1 or the sleeve head 2.

[0019] In this embodiment, the rotary drive assembly 4 includes a motor 401, a first gear 402 fixedly mounted on the output shaft of the motor 401, and a second gear 403 fixedly mounted on the outer wall of the rotary sleeve 3. The first gear 402 and the second gear 403 mesh with each other. In actual use, the motor 401 is fixedly installed inside the housing of the rectal ligator.

[0020] Motor 401 drives the first gear 402 to rotate, the first gear 402 drives the second gear 403 and the rotating sleeve 3 to rotate, which in turn drives the hot melt assembly 5 to rotate.

[0021] In this embodiment, the inside of the ligation head 2 is provided with an aspiration chamber 202 for accommodating lesion tissue. The two ends of the aspiration chamber 202 are an aspiration end 203 and a connecting end 204, respectively. The aspiration end 203 is an open structure. The inner part of the end face of the connecting end 204 extends axially to form a cylindrical connecting part 205 for connecting the pipeline. The outer part of the end face of the connecting end 204 is a hot-cut surface 206. One end of the thread hole 201 opens on the hot-cut surface 206.

[0022] The connecting part 205 is connected to a negative pressure device via a pipeline. The negative pressure device can be a negative pressure pump or other equipment and devices capable of providing negative pressure conditions. The pipeline is connected to the suction chamber 202. One end of the elastic cord passes through the threading hole 201 and is tied into a slipknot, which is then placed on the outer wall of the ligating head 2. In use, the suction end 203 is close to the lesion tissue. After the negative pressure device is activated, the lesion tissue is sucked into the suction chamber 202. As the elastic cord is gradually tightened, the slipknot slides off the ligating head 2 to the root of the lesion tissue and is further tightened. The threading hole 201 is used to define the threading position of the elastic cord. In addition, the threading hole 201 and the suction chamber 202 are set independently to avoid affecting the airtightness of the suction chamber 202.

[0023] In this embodiment, two or more threading holes 201 are arranged in an arc shape around the axis of the connecting part 205 on the hot-cut surface 206 of the ligating head 2. Elastic threads are threaded through each threading hole 201, and the heat-melting assembly 5 melts the elastic threads in sequence during rotation. Increasing the number of threading holes 201 allows for the accommodation of more elastic threads, enabling the ligation of multiple lesions without replacing the rectal ligator, significantly saving on medical device consumption and reducing medical costs.

[0024] In this embodiment, the rotating sleeve 3 is a metal cylindrical tube, and its outer wall is rotatably fitted with the inner wall of the connecting tube 1. The metal rotating sleeve 3 has good mechanical properties and is not easily bent or deformed. Therefore, the rotating sleeve 3, with its smaller outer diameter, can meet the usage requirements, thereby reducing the overall external volume of the rectal ligator and making operation more convenient and flexible. The connecting tube 1 not only provides support and connection but also limits the radial position of the rotating sleeve 3, preventing excessive radial deviation that could cause the heating wire 501 to fail to contact the elastic cord.

[0025] In this embodiment, during use, the suction end 203 of the ligator 2 is placed close to the lesion tissue, and the negative pressure device is activated to create negative pressure in the suction chamber 202. Under the action of negative pressure, the lesion tissue is sucked into the suction chamber 202. Initially, one end of the elastic cord passes through the threading hole 201 and is knotted to form a slipknot, which is then placed on the outer wall of the ligator 2. As the elastic cord is gradually tightened, it slides off the ligator 2 to the root of the lesion tissue. When the slipknot is fully tightened, the rotation drive assembly 4 drives the rotating sleeve 3 and the heat fusion assembly 5 to rotate. The heating wire 501 of the heat fusion assembly 5 is energized and generates high temperature, which melts the elastic cord in contact with it.

[0026] 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 heat-cutting elastic thread cutting mechanism for an anorectal ligator, comprising a connecting tube, characterized in that, One end of the connecting tube is connected to a ferrule, and a threading hole is provided through the side wall of the ferrule. One end of the threading hole opens into the interior of the connecting tube. A rotating sleeve is rotatably provided inside the connecting tube. One end of the rotating sleeve is connected to a rotation drive assembly, and the other end of the rotating sleeve is connected to a heat fusion assembly. The heat fusion assembly cooperates with the threading hole.

2. The heat-cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The hot melt assembly includes a heating wire, both ends of which are fixedly connected to one end of the rotating sleeve via support arms, and the heating wire cooperates with the threading hole.

3. The heat-cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The rotary drive assembly includes a motor, a first gear is fixedly mounted on the output shaft of the motor, and a second gear is fixedly mounted on the outer wall of the rotary sleeve, with the first gear meshing with the second gear.

4. The heat-cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The ligature head has an internal suction chamber for accommodating lesion tissue. The two ends of the suction chamber are a suction end and a connection end, respectively. The suction end has an open structure. The inner part of the end face of the connection end extends axially to form a cylindrical connection part for connecting the pipeline. The outer part of the end face of the connection end is a hot-cut surface. One end of the thread hole opens onto the hot-cut surface.

5. The heat-cutting elastic thread mechanism for the rectal ligator according to claim 4, characterized in that, Two or more of the threading holes are arranged in an arc shape with the axis of the connecting part as the center on the hot-cut surface of the sleeving head.

6. The heat-cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The rotating sleeve is a metal round tube, and the outer wall of the rotating sleeve is rotatably fitted with the inner wall of the connecting tube.

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