Pressure relief switch for anorectal loop ligature device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a pressure relief switch for an anorectal loop ligature device, which comprises an adapter, the adapter is fixedly arranged on the inner side wall of a shell of the anorectal loop ligature device and comprises a main gas pipeline and a branch gas pipeline communicated with the main gas pipeline, one end of the main gas pipeline is communicated with a negative pressure device, and the other end of the main gas pipeline is communicated with a pressure relief valve. The other end of the main air pipeline is communicated with an air path assembly making contact with focus tissue, and a sealing plug is arranged at a pipe opening of the branch air pipeline and driven by a driving mechanism to move. The sealing plug is arranged at the branch air pipeline opening of the adapter, and after the driving mechanism drives the sealing plug to be separated from the branch air pipeline opening, air enters from the branch air pipeline opening so as to eliminate negative pressure in the first cavity. The negative pressure switch is integrated to the handheld part of the anorectal loop ligature device, can be operated by one hand and is flexible to use, and an operator is prevented from reciprocating between the negative pressure device and an operation table.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a pressure relief switch for an 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] When using a ligator to ligate lesions, negative pressure is typically used to draw the lesion into a specific cavity. Then, elastic cords are ligated at the base of the lesion and cut. After these procedures, the cavity needs to be restored to normal pressure to allow the lesion to separate from it. A review of existing technologies reveals that most ligators generate negative pressure via an external negative pressure device, with the generation and release of negative pressure controlled by an on / off switch. This requires the operator to move back and forth between the worktable and the negative pressure device to control its operation, making it very inconvenient. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a pressure relief switch 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 pressure relief switch for an anorectal ligator includes an adapter fixedly mounted on the inner wall of the anorectal ligator housing. The adapter includes a main air pipe and a branch air pipe connected to the main air pipe. One end of the main air pipe is connected to a negative pressure device, and the other end of the main air pipe is connected to an air circuit assembly. A sealing plug is provided at the opening of the branch air pipe, and the sealing plug is driven to move by a driving mechanism.

[0007] As a further improvement, the sealing plug has a cylindrical structure with a first chamfer at one end near the branch pipe and a second chamfer on the inner wall of the branch pipe opening, with the first and second chamfers fitting together.

[0008] As a further improvement, the drive mechanism includes a rotating rod, the middle part of which is rotatably connected to the inner wall of the anorectal ligator housing. One end of the rotating rod is vertically fixed to the end of the sealing plug away from the bronchus. The other end of the rotating rod protrudes downward perpendicularly to its plane of rotation to form a connecting shaft. The connecting shaft is connected to a pressure relief button for driving the rotating rod to rotate.

[0009] As a further improvement, the pressure relief button includes a rod body, and a mounting hole is provided through the housing of the rectal ligator. One end of the rod body passes through the mounting hole and is located outside the housing. The rod body is slidably connected to the mounting hole. The other end of the rod body is provided with an elliptical first slot. The length extension direction of the first slot is perpendicular to the axial direction of the rod body. The connecting shaft is slidably engaged with the first slot.

[0010] As a further improvement, an annular stop is fixed on the side wall of the rod, the stop is located inside the housing, the end face of the stop abuts against the inner side wall of the housing, a baffle is fixed on the inner side wall of the housing, the rod passes through the baffle, and a spring connects the baffle and the stop.

[0011] As a further improvement, the airway assembly includes a ligature head, one end of which is recessed inward to form a first cavity for accommodating lesion tissue, the first cavity being connected to the main airway via a trachea.

[0012] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows:

[0013] This utility model provides a pressure relief switch for an anorectal ligation device. A sealing plug is installed at the bronchus inlet of the adapter. When the drive mechanism separates the sealing plug from the bronchus inlet, gas enters from the bronchus inlet to eliminate the negative pressure in the first cavity. Integrating the negative pressure switch into the handheld part of the anorectal ligation device allows for one-handed operation, providing flexibility and avoiding the need for the operator to move back and forth between the negative pressure device and the operating table. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection relationship between the pressure relief switch and other components of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the sleeving head of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the rotating rod of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the pressure relief button of this utility model.

[0019] Wherein: 1-Adapter, 101-Main air pipe, 102-Branch air pipe, 2-Housing, 201-Baffle, 3-Negative pressure device, 4-Air circuit assembly, 401-Lock head, 4011-First cavity, 402-Air pipe, 5-Sealing plug, 6-Drive mechanism, 601-Rotating rod, 602-Connecting shaft, 603-Pressure relief button, 6031-Rod body, 6032-First slot, 6033-Stop block, 604-Spring. 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 1-5 As shown, a pressure relief switch for an anorectal ligation device includes an adapter 1, which is fixedly mounted on the inner wall of the housing 2. The adapter 1 includes a main air pipe 101 and a branch air pipe 102 connected to the main air pipe 101. One end of the main air pipe 101 is connected to a negative pressure device 3, and the other end of the main air pipe 101 is connected to an air circuit assembly 4. A sealing plug 5 is provided at the opening of the branch air pipe 102, and the sealing plug 5 is driven to move by a driving mechanism 6.

[0022] Specifically, the negative pressure device 3 is used to generate negative pressure. The negative pressure device 3 can use any device commonly used in the prior art that can generate a negative pressure environment; no specific limitation is made here. Integrating the negative pressure device 3 inside the housing 2 avoids the need to connect to an external air source device, making it more convenient and flexible to use. The airway assembly 4 includes a ligating head 401. One end of the ligating head 401 is recessed inward to form a first cavity 4011 for accommodating lesion tissue. The first cavity 4011 is connected to the main air pipe 101 via a trachea.

[0023] During use, the ligation head 401 is aligned with and brought close to the lesion tissue. At this time, a relatively closed space is formed inside the first cavity 4011, the trachea 402, and the adapter 1. After the negative pressure device 3 is activated, a negative pressure is formed in this space. Under the action of the negative pressure, the lesion tissue is drawn into the first cavity 4011. After the ligation operation is completed, the negative pressure device 3 is turned off. The drive mechanism 6 drives the sealing plug 5 to move and separate it from the opening of the bronchial tube 102. A large amount of external gas enters the adapter 1, the trachea 402, and the first cavity 4011. After the negative pressure disappears, the lesion tissue can be detached from the first cavity 4011.

[0024] In this embodiment, the sealing plug 5 is a cylindrical structure with a first chamfer at one end near the branch pipe 102 and a second chamfer on the inner wall of the opening of the branch pipe 102. The first chamfer and the second chamfer cooperate to make it easier for the sealing plug 5 to be inserted into the opening of the branch pipe 102.

[0025] In this embodiment, the sealing plug 5 is made of a soft and smooth material, which is more conducive to its fit with the bronchial pipe 102 port and prevents air leakage.

[0026] In this embodiment, the driving mechanism 6 includes a rotating rod 601. The middle part of the rotating rod 601 is rotatably connected to the inner wall of the housing 2. One end of the rotating rod 601 is vertically fixedly connected to the end of the sealing plug 5 away from the branch pipe 102. The other end of the rotating rod 601 protrudes downward perpendicularly to its plane of rotation to form a connecting shaft 602. The connecting shaft 602 is connected to a pressure relief button 603 for driving the rotating rod 601 to rotate. Specifically, as shown... Figure 1 As shown, when the pressure relief button 603 moves to the right, it drives the rotating rod 601 to rotate counterclockwise, thereby causing the sealing plug 5 to separate from the port of the branch pipe 102.

[0027] In this embodiment, the pressure relief button 603 includes a rod 6031. A mounting hole is provided through the housing 2. One end of the rod 6031 passes through the mounting hole and is located outside the housing 2. The rod 6031 is slidably connected to the mounting hole. The other end of the rod 6031 is provided with an elliptical first slot 6032. The length extension direction of the first slot 6032 is perpendicular to the axial direction of the rod 6031. The connecting shaft 602 is slidably engaged with the first slot 6032. An annular stop 6033 is fixed on the side wall of the rod 6031. The stop 6033 is located inside the housing 2. The end face of the stop 6033 abuts against the inner side wall of the housing 2. A baffle 201 is fixed on the inner side wall of the housing 2. The rod 6031 passes through the baffle 201. A spring 604 is connected between the baffle 201 and the stop 6033.

[0028] The stop 6033 serves two purposes: firstly, it limits the movement of the rod 6031, preventing it from sliding out of the mounting hole; secondly, the baffle 201 and the stop 6033 provide force support for the spring 604. Figure 1 As shown, when the pressure relief button 603 is pressed manually, the pressure relief button 603 slides to the right, the spring 604 is compressed, the first slot 6032 drives the connecting shaft 602 to rotate, and thus the rotating rod 601 rotates counterclockwise.

[0029] In this embodiment, when using the ligation head 401, it is aligned with and brought close to the lesion tissue. After activating the negative pressure device 3, a negative pressure is formed in the first cavity 4011, and the lesion tissue is drawn into the first cavity 4011, at which point ligation and other operations can be performed. After the ligation operation is completed, the pressure in the first cavity 4011 needs to be restored to normal to allow the lesion tissue to separate from the first cavity 4011. At this time, the pressure relief button 603 needs to be pressed manually. The pressure relief button 603 drives the rotating rod 601 to rotate counterclockwise, thereby separating the sealing plug 5 from the opening of the bronchial pipe 102. After the external gas enters from the opening of the bronchial pipe 102, there is no longer a negative pressure in the first cavity 4011. At this time, the lesion tissue can be easily detached from the first cavity 4011.

[0030] 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 pressure relief switch for a rectal ligator, comprising an adapter, the adapter being fixedly disposed on the inner wall of the rectal ligator housing, characterized in that, The adapter includes a main gas pipe and a branch gas pipe connected to the main gas pipe. One end of the main gas pipe is connected to a negative pressure device, and the other end of the main gas pipe is connected to a gas path assembly. A sealing plug is provided at the opening of the branch gas pipe, and the sealing plug is driven to move by a driving mechanism.

2. The pressure relief switch for the rectal ligator according to claim 1, characterized in that, The sealing plug has a cylindrical structure, with a first chamfer at one end near the branch pipe and a second chamfer on the inner wall of the branch pipe opening, the first chamfer and the second chamfer cooperating with each other.

3. The pressure relief switch for the rectal ligator according to claim 1, characterized in that, The driving mechanism includes a rotating rod, the middle part of which is rotatably connected to the inner wall of the housing. One end of the rotating rod is perpendicularly fixed to the end of the sealing plug away from the gas pipe. The other end of the rotating rod protrudes downward perpendicularly to its plane of rotation to form a connecting shaft. The connecting shaft is connected to a pressure relief button for driving the rotating rod to rotate.

4. The pressure relief switch for the rectal ligator according to claim 3, characterized in that, The pressure relief button includes a rod body, and a mounting hole is provided through the housing. One end of the rod body passes through the mounting hole and is located outside the housing. The rod body is slidably connected to the mounting hole. The other end of the rod body is provided with an elliptical first slot. The length extension direction of the first slot is perpendicular to the axial direction of the rod body. The connecting shaft is slidably engaged with the first slot.

5. The pressure relief switch for the rectal ligator according to claim 4, characterized in that, An annular stop is fixed on the side wall of the rod. The stop is located inside the housing. The end face of the stop abuts against the inner side wall of the housing. A baffle is fixed on the inner side wall of the housing. The rod passes through the baffle. A spring connects the baffle and the stop.

6. The pressure relief switch for the rectal ligator according to claim 1, characterized in that, The airway assembly includes a ligature head, one end of which is recessed inward to form a first cavity for accommodating lesion tissue. The first cavity is connected to the main airway via a trachea.

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