Rotary-cut elastic thread mechanism for anorectal loop ligature device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a rotary-cut elastic thread mechanism for an anorectal ligation device, which comprises a connecting tube, one end of the connecting tube is connected with a ligation head, the ligation head is provided with a threading hole, and one end of the threading hole is opened inside the connecting tube; a rotating part is rotationally arranged in the connecting pipe, one end, close to the loop ligature head, of the rotating part is connected with a cutter used for cutting off the elastic thread, the other end of the rotating part is connected with a driving assembly, and the threading hole corresponds to the cutter. The driving assembly and the cutter are arranged at the two ends of the rotating pipe respectively, when the driving assembly drives the rotating pipe to rotate, the cutter cuts off the elastic thread, manual operation is replaced, operation is simplified, and configuration of operators can be simplified.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a rotary cutting elastic thread mechanism for anorectal ligation device. 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 over the lesion tissue, it needs to be cut. Most existing solutions for anorectal ligation devices are performed manually. This method is highly susceptible to damaging the mucosa near the hemorrhoids, and due to its complexity, it demands a high level of experience and skill from the operator. Sometimes, two people are even required to complete the procedure. Therefore, it is necessary to improve existing solutions for 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 rotary cutting elastic thread 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:

[0006] A rotary elastic thread cutting mechanism for an anorectal ligator includes a connecting tube, one end of which is connected to a ligating head. The ligating head is provided with a thread hole, one end of which opens into the inside of the connecting tube.

[0007] The connecting tube is equipped with a rotating component. One end of the rotating component near the tying head is connected to a cutter for cutting the elastic thread, and the other end of the rotating component is connected to a drive assembly. The threading hole corresponds to the cutter.

[0008] As a further improvement, the drive assembly includes a first motor, a first gear fixedly connected to the output shaft of the first motor, and a second gear fixedly sleeved on the outer side wall of one end of the rotating part, with the first gear and the second gear meshing together.

[0009] As a further improvement, the ligation head has a first cavity inside for absorbing lesion tissue, and the suture hole penetrates the side wall of the ligation head;

[0010] One end of the ligating head is the inhalation end, and the other end is the connection end for connecting to the connecting tube. The inner part of the end face of the connection end extends axially to form the tracheal connection end. The outer part of the end face of the connection end is provided with a rotary cutting surface. The threading hole opens on the rotary cutting surface. The cutter is provided with a blade, and the blade slides against the rotary cutting surface.

[0011] As a further improvement, the tracheal connection end is cylindrical, and the cutter includes a blade holder and a blade. One end of the blade holder is fixedly connected to a rotating component, and the other end of the blade holder is connected to the blade. The blade holder slides against the outer circumferential surface of the tracheal connection end.

[0012] As a further improvement, multiple threading holes are arranged in an arc shape with the axis of the tracheal connection end as the center on the cutting surface of the ligating head, and the side of the blade near the tracheal connection end is arc-shaped to match the circumference of the tracheal connection end.

[0013] As a further improvement, the rotating component is a metal round tube, and the outer wall of the rotating component is rotatably fitted with the inner wall of the connecting tube.

[0014] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows:

[0015] This utility model provides a rotary cutting elastic wire mechanism for anorectal ligation device. The two ends of the rotating part are respectively provided with a drive component and a cutter. When the drive component drives the rotating part to rotate, it drives the cutter to rotate and cut the elastic wire. There is no need for manual cutting, the operation is simple, and there is no need to provide additional cutting personnel, thus simplifying the configuration of operators. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the sleeving head of this utility model;

[0018] Figure 3 This is a schematic diagram showing the combination of the tying head and the cutter of this utility model.

[0019] Wherein: 1-connecting tube, 2-sleeving head, 201-threading hole, 202-first cavity, 203-inhalation end, 204-connecting end, 205-tracheal connection end, 206-rotating cutting surface, 3-elastic line, 4-rotating component, 5-cutting blade, 501-blade, 502-blade holder, 6-drive assembly, 601-first motor, 602-first gear, 603-second gear. Detailed Implementation

[0020] 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.

[0021] like Figure 1-3 As shown, a rotary elastic thread cutting mechanism for anorectal ligation includes a connecting tube 1, one end of which is connected to a ligation head 2. The ligation head 2 is provided with a thread hole 201, one end of which opens into the interior of the connecting tube 1, and an elastic thread 3 passes through the interior of the thread hole 201.

[0022] A rotating component 4 is rotatably provided inside the connecting tube 1. One end of the rotating component 4 near the tying head 2 is connected to a cutter 5 for cutting the elastic thread 3. The other end of the rotating component 4 is connected to a drive assembly 6. The thread hole 201 corresponds to the cutter 5.

[0023] In practical use, the rotating component 4 is fitted with the connecting pipe 1 with a clearance, allowing the rotating component 4 to rotate within the connecting pipe 1. The connecting pipe 1 mainly serves as a support and connection, and also restricts the radial position of the rotating component 4. The driving assembly 6 drives the rotating component 4 to rotate, which in turn drives the cutter 5 to rotate. During the rotation, the cutter 5 cuts the elastic line 3.

[0024] In this embodiment, the drive assembly 6 includes a first motor 601, a first gear 602 fixedly connected to the output shaft of the first motor 601, and a second gear 603 fixedly sleeved on the outer side wall of one end of the rotating component 4. The first gear 602 and the second gear 603 mesh with each other. The first motor 601 drives the first gear 602 to rotate, and the first gear 602 drives the second gear 603, the rotating tube, and the cutter 5 to rotate.

[0025] In this embodiment, the ligating head 2 has a first cavity 202 for absorbing lesion tissue, and the thread hole 201 penetrates the side wall of the ligating head 2.

[0026] One end of the ligating head 2 is an inhalation end 203, and the other end is a connection end 204 for connecting to the connecting tube 1. The inner part of the end face of the connection end 204 extends axially to form a tracheal connection end 205, and the outer part of the end face of the connection end 204 is provided with a rotary cutting surface 206. The threading hole 201 opens on the rotary cutting surface 206. The cutter 5 is provided with a blade 501, and the cutter 5 slides against the rotary cutting surface 206. In use, the first cavity 202 is connected to a negative pressure device through the trachea. When the inhalation end 203 of the ligating head 2 contacts the lesion tissue, a negative pressure is formed in the first cavity 202, and the lesion tissue is drawn into the first cavity 202. The threading hole 201 and the first cavity 202 are set independently to ensure the sealing of the first cavity 202.

[0027] In this embodiment, the tracheal connection end 205 is cylindrical, and the cutter 5 includes a blade holder 502 and a blade 501. One end of the blade holder 502 is fixedly connected to the blade 501, and the other end of the blade holder 502 is connected to the rotating component 4. The blade holder 502 slides against the outer peripheral surface of the tracheal connection end 205. Specifically, the bottom surface of the blade holder 502 is an arc-shaped curved surface structure, which makes the cutter 5 rotate more smoothly and avoids jamming.

[0028] In this embodiment, multiple threading holes 201 are arranged in an arc shape with the axis of the tracheal connection end 205 as the center on the rotary cutting surface 206 of the ligating head 2. The side of the blade 501 near the tracheal connection end 205 is an arc-shaped curved surface structure that matches the circumference of the tracheal connection end 205. The arc-shaped curved surface structure makes the blade 501 fit more smoothly with the circumference of the tracheal connection end 205, avoiding jamming.

[0029] In this embodiment, the rotating component 4 is a metal round tube, which gives the rotating component 4 good mechanical properties and prevents abnormal bending and deformation of the rotating component 4 during the cutting process. The outer wall of the rotating component 4 rotates and engages with the inner wall of the connecting pipe 1.

[0030] In this embodiment, when in use, the ligating head 2 is aligned with and contacts the lesion tissue. The negative pressure device is activated to create negative pressure in the first cavity 202. Under the action of negative pressure, the lesion tissue is drawn into the first cavity 202. After the elastic thread 3 is looped around the root of the lesion tissue and tightened, the drive assembly 6 drives the rotating part 4 and the cutter 5 to rotate and cut the elastic thread 3.

[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 rotary cutting elastic thread mechanism for an anorectal ligator, comprising a connecting tube, characterized in that, One end of the connecting tube is connected to a sleeve head, and the sleeve head is provided with a threading hole, one end of which opens into the inside of the connecting tube; The connecting tube is equipped with a rotating component, and one end of the rotating component near the tying head is connected to a cutter for cutting the elastic thread. The other end of the rotating component is connected to a drive assembly, and the threading hole corresponds to the cutter.

2. The rotary cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The drive assembly includes a first motor, a first gear is fixedly connected to the output shaft of the first motor, and a second gear is fixedly sleeved on the outer side wall of one end of the rotating component, with the first gear meshing with the second gear.

3. The rotary cutting elastic thread mechanism for the rectal ligator according to claim 1, characterized in that, The ligating head has a first cavity inside for absorbing lesion tissue, and the thread hole penetrates the side wall of the ligating head; One end of the ligating head is an inhalation end, and the other end is a connection end for connecting to a connecting tube. The inner part of the end face of the connection end extends axially to form a tracheal connection end, and the outer part of the end face of the connection end is provided with a rotary cutting surface. The threading hole opens on the rotary cutting surface, and the cutter is provided with a blade. The blade slides against the rotary cutting surface.

4. The rotary cutting elastic thread mechanism for the rectal ligator according to claim 3, characterized in that, The tracheal connection end is cylindrical, and the cutter includes a blade holder and a blade. One end of the blade holder is fixedly connected to the rotating component, and the other end of the blade holder is connected to the blade. The blade holder slides against the outer circumferential surface of the tracheal connection end.

5. The rotary cutting elastic thread mechanism for the rectal ligator according to claim 4, characterized in that, Multiple threading holes are arranged in an arc shape with the axis of the tracheal connection end as the center of the arc. The side of the blade near the tracheal connection end is arc-shaped to match the circumferential surface of the tracheal connection end.

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

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