An anorectal ligation device and its barrel

Abstract

The utility model discloses a kind of anorectal ligation device and its gun barrel, comprising: negative pressure pipe body, negative pressure pipe head, outer sleeve tube, elastic line catheter and elastic line;The negative pressure pipe head is fixedly connected in the distal end of the negative pressure pipe body;The outer sleeve tube is coaxially detachably arranged in the outer tube wall of the negative pressure pipe head;The elastic line catheter is fixedly arranged in the side wall of the negative pressure pipe body along the axial direction;First sliding groove extending along the axial direction is formed between the outer tube wall surface of the negative pressure pipe head and the inner wall of the outer sleeve tube.The utility model compared with traditional line band traction or push ring structure, has dispensed with complex inner push rod or multilayer sleeve tube, significantly simplified gun barrel internal structure, reduce overall outer diameter, improve the passability and operation comfort degree of instrument in anorectal narrow space;Meanwhile, slipknot structure can be automatically tightened and come out when being pulled tight, ensure that ligation action is accurate, reliable, reduce operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of anorectal treatment equipment technology, and more specifically, to an anorectal ligation device and its barrel. Background Technology

[0002] An anal ligation device is a medical device primarily used to treat internal hemorrhoids. By placing a specially designed rubber band around the base of the hemorrhoid, its blood supply is blocked, causing the hemorrhoidal tissue to necrose and slough off, thus achieving the therapeutic goal. This method is minimally invasive, allows for rapid recovery, and is currently a commonly used non-surgical treatment method in clinical practice.

[0003] In existing anorectal ligation techniques, the gun head structure generally employs mechanical transmission methods such as wire traction, push ring propulsion, or double-tube linkage to release and tighten the rubber ring. These structures typically require multiple precisely matched components, such as the inner tube, outer tube, push rod, traction wire, and fixing ring, resulting in complex overall assembly processes, a large number of parts, and high manufacturing precision requirements. Furthermore, due to the reliance on multiple tubes or additional push ring mechanisms, it is difficult to reduce the gun body diameter, which not only increases the overall size of the device but also affects operational flexibility and patient comfort, especially causing discomfort when operating within narrow anal canals.

[0004] Therefore, it is necessary to provide an anorectal ligation device and its barrel to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an anorectal ligation device and its barrel, overcoming the aforementioned defects in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is: an anorectal ligation device and its barrel, comprising: a negative pressure tube body, a negative pressure tube head, an outer tube, an elastic thread guide tube, and an elastic thread;

[0007] The negative pressure tube head is fixedly connected to the distal end of the negative pressure tube body;

[0008] The outer sleeve is detachably and coaxially sleeved on the outer wall of the negative pressure pipe head;

[0009] The elastic wire conduit is fixedly installed axially on the side wall of the negative pressure tube body;

[0010] A first axially extending groove is formed between the outer wall of the negative pressure pipe head and the inner wall of the outer sleeve.

[0011] After being led out from the elastic cord conduit, the elastic cord passes through the first groove and is fitted onto the outer wall of the outer tube with a swivel structure, for releasing and contracting under tension.

[0012] Furthermore, the outer sleeve is snapped onto the outer wall of the negative pressure pipe head.

[0013] Furthermore, the negative pressure tube head is provided with a first limiting protrusion, and the inner wall of the outer sleeve is provided with an L-shaped limiting groove corresponding to the position of the first limiting protrusion. The first limiting protrusion is embedded in the L-shaped limiting groove and is used to rotate and lock after the outer sleeve is pushed in axially, so as to realize axial limiting and circumferential positioning.

[0014] Furthermore, the elastic wire conduit includes a housing, which is detachably mounted on the negative pressure tube body by fasteners; the inner side of the housing is provided with a second sliding groove arranged along the axial direction, and both ends of the second sliding groove are provided with through holes.

[0015] Furthermore, the negative pressure tube head is snapped into one end of the negative pressure tube body.

[0016] Furthermore, one end of the negative pressure tube head is provided with a connecting tube, which is connected to the inside of the negative pressure tube head; the outer wall of the connecting tube is provided with at least one annular flange, and the inner side wall of one end of the negative pressure tube body is provided with at least one groove to cooperate with the snap-fit ​​of the connecting tube.

[0017] Furthermore, the negative pressure tube body and the outer shell form a limiting groove at one end near the negative pressure tube head, and the negative pressure tube head is also provided with a second limiting protrusion that cooperates with the limiting groove.

[0018] An anorectal ligation device, comprising the aforementioned anorectal ligation device barrel.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] (1) Compared with the traditional traction or push ring structure, this utility model eliminates the complex internal push rod or multi-layer sleeve, significantly simplifies the internal structure of the gun barrel, reduces the overall outer diameter, and improves the instrument's passability and operational comfort in the narrow space of the anal canal; at the same time, the slip knot structure can automatically tighten and dislodge when tightened, ensuring that the ligation action is accurate and reliable, and reducing the difficulty of operation.

[0021] (2) This utility model avoids complex assembly processes such as threaded connection or bonding, facilitates quick assembly and disassembly and replacement after single use, improves clinical operation efficiency, and is conducive to modular production and aseptic packaging.

[0022] (3) This utility model not only ensures that the outer tube is stably positioned in the axial direction and prevents displacement due to negative pressure or tension during the operation, but also achieves precise circumferential positioning, ensuring that the first slide groove is aligned with the elastic line path, improving the consistency and success rate of rubber ring release, while also taking into account the need for quick disassembly.

[0023] (4) The outer shell of the elastic cord conduit of this utility model can be detachably installed on the negative pressure tube body, which facilitates the threading, replacement or maintenance of the elastic cord; the second sliding groove and the through holes at both ends provided inside provide a smooth and low-friction guide channel for the elastic cord, effectively preventing the cord from getting tangled or stuck, ensuring the smoothness and responsiveness of the pulling action, and improving the feel and reliability of the instrument operation.

[0024] (5) The negative pressure tube head and the negative pressure tube body of this utility model adopt a snap-fit ​​connection, which replaces the traditional welding or one-piece molding structure. This facilitates manufacturing and assembly, and allows for the replacement of tube heads of different specifications according to clinical needs, thereby enhancing the versatility and adaptability of the product and reducing mold development costs.

[0025] (6) The present invention establishes a reliable airtight connection structure between the negative pressure tube head and the negative pressure tube body. This design achieves rapid insertion and extraction and secure locking while ensuring the stability of negative pressure conduction. It effectively prevents air leakage during operation from causing negative pressure failure, ensures that hemorrhoids can be fully sucked into the ligation cavity, and improves the success rate of treatment.

[0026] (7) The limiting groove of this utility model cooperates with the second limiting protrusion on the negative pressure tube head to form a collaborative positioning structure among the three. This design further enhances the relative positional stability between the negative pressure tube head, the negative pressure tube body and the elastic line catheter, and prevents the slide groove from being misaligned due to assembly deviation or operational force, thereby ensuring the elastic line path is accurate and the action is reliable, and improving the overall structural rigidity and clinical safety. Attached Figure Description

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0028] Figure 1 This is a perspective view of the present invention.

[0029] Figure 2 This is an exploded view of the present invention.

[0030] Figure 3 This is a structural diagram of the negative pressure pipe head and outer casing.

[0031] Figure 4 This is a schematic diagram of the negative pressure tube body and the distal end of the elastic wire conduit.

[0032] Figure 5 This is a 3D view of the negative pressure pipe head.

[0033] 1. Negative pressure tube body; 2. Negative pressure tube head; 2-1. First limiting protrusion; 2-2. Connecting tube; 2-3. Annular flange; 2-4. Second limiting protrusion; 3. Outer tube; 3-1. First sliding groove; 3-2. L-shaped limiting groove; 4. Elastic wire guide tube; 4-1. Outer shell; 4-2. Second sliding groove; 4-3. Through hole; 4-4. Limiting groove; 5. Elastic wire. Detailed Implementation

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0040] (Example 1)

[0041] A rectal ligation device barrel, see Figure 1 and Figure 2 It includes: negative pressure tube body 1, negative pressure tube head 2, outer tube 3, elastic wire conduit 4, and elastic wire 5;

[0042] The negative pressure pipe head 2 is fixedly connected to the far end of the negative pressure pipe body 1;

[0043] The outer sleeve 3 is detachably and coaxially sleeved on the outer wall of the negative pressure pipe head 2;

[0044] The elastic wire conduit 4 is fixedly installed axially on the side wall of the negative pressure pipe body 1;

[0045] A first groove 3-1 extending axially is formed between the outer wall of the negative pressure pipe head 2 and the inner wall of the outer sleeve 3;

[0046] After the elastic cord 5 is led out from the elastic cord conduit 4, it passes through the first sliding groove 3-1 and is sleeved on the outer wall of the outer tube 3 with a swivel structure, which is used to release and contract under tension.

[0047] Specifically, see Figure 3 The outer tube 3 is snapped onto the outer wall of the negative pressure tube head 2. The negative pressure tube head 2 is provided with a first limiting protrusion 2-1, and the inner wall of the outer tube 3 is provided with an L-shaped limiting groove 3-2 corresponding to the position of the first limiting protrusion 2-1. The first limiting protrusion 2-1 is embedded in the L-shaped limiting groove 3-2, which is used to rotate and lock after the outer tube 3 is pushed in axially, realizing axial limiting and circumferential positioning. This avoids complex assembly processes such as threaded connections or adhesives, facilitates quick assembly and disassembly and replacement after single use, improves clinical operation efficiency, and is conducive to modular production and aseptic packaging. It not only ensures that the outer tube is stably positioned axially to prevent displacement due to negative pressure or tension during operation, but also achieves precise circumferential positioning, ensuring that the first sliding groove is aligned with the elastic line path, improving the consistency and success rate of rubber ring release, while also taking into account the need for quick disassembly.

[0048] Specifically, see Figure 2 and Figure 4 The elastic cord conduit 4 includes a housing 4-1, one end of which is snapped onto the negative pressure tube body 1, and the other end is riveted to it. The inner side of the housing 4-1 has a second axially oriented groove 4-2, with through holes 4-3 at both ends. The elastic cord 5 passes through the through holes 4-3 into the second groove 4-2, and then through the through holes 4-3 into the first groove 3-1. The housing of the elastic cord conduit is detachably installed on the negative pressure tube body, facilitating the threading, replacement, or maintenance of the elastic cord. The second groove and through holes at both ends provide a smooth, low-friction guiding channel for the elastic cord, effectively preventing tangling or jamming, ensuring the smoothness and responsiveness of the pulling action, and improving the feel and reliability of the instrument.

[0049] Specifically, see Figure 4 and Figure 5 The negative pressure tube head 2 is snapped onto one end of the negative pressure tube body 1; one end of the negative pressure tube head 2 is provided with a connecting tube 2-2, which is connected to the interior of the negative pressure tube head 2; the outer wall of the connecting tube 2-2 is provided with at least one annular flange 2-3, and the inner side wall of one end of the negative pressure tube body 1 is provided with at least one groove to cooperate with the snapping of the connecting tube 2-2. To further limit the circumferential rotation of the negative pressure tube head 2, the negative pressure tube body 1 and the outer shell 4-1 form a limiting groove 4-4 near the end of the negative pressure tube head 2, and the negative pressure tube head 2 is also provided with a second limiting protrusion 2-4 that cooperates with the limiting groove 4-4.

[0050] The negative pressure catheter head and body are connected by a snap-fit ​​joint, replacing the traditional welding or one-piece molding structure. This facilitates manufacturing and assembly, and allows for the replacement of different sizes of catheter heads according to clinical needs, enhancing the product's versatility and adaptability while reducing mold development costs. A reliable airtight connection structure is constructed between the negative pressure catheter head and body. This design ensures the stability of negative pressure conduction while enabling quick insertion and removal and secure locking, effectively preventing air leakage during surgery that could lead to negative pressure failure. This ensures that hemorrhoids can be fully drawn into the ligation cavity, improving the treatment success rate.

[0051] The limiting groove cooperates with the second limiting protrusion on the negative pressure tube head to form a collaborative positioning structure among the three. This design further enhances the relative positional stability between the negative pressure tube head, the negative pressure tube body and the elastic cord catheter, preventing misalignment of the sliding groove due to assembly deviation or operational force, thereby ensuring the accuracy of the elastic cord path and reliable operation, and improving the overall structural rigidity and clinical safety.

[0052] An anorectal ligation device includes the aforementioned anorectal ligation device barrel. Compared to traditional traction or push-ring structures, this embodiment eliminates the complex internal push rod or multi-layered sleeve, significantly simplifying the internal structure of the barrel, reducing the overall outer diameter, and improving the device's maneuverability and operational comfort in the narrow space of the anal canal. Simultaneously, the slipknot structure automatically tightens and disengages when pulled, ensuring precise and reliable ligation and reducing operational difficulty.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A barrel for an anorectal ligation device, characterized in that, include: Negative pressure tube body (1), negative pressure tube head (2), outer tube (3), elastic wire conduit (4) and elastic wire (5); The negative pressure tube head (2) is fixedly connected to the far end of the negative pressure tube body (1); The outer sleeve (3) is detachably and coaxially sleeved on the outer wall of the negative pressure pipe head (2); The elastic wire conduit (4) is fixedly disposed axially on the side wall of the negative pressure tube body (1); A first groove (3-1) extending axially is formed between the outer wall of the negative pressure pipe head (2) and the inner wall of the outer sleeve (3); The elastic cord (5) is led out from the elastic cord conduit (4), passes through the first groove (3-1), and is fitted onto the outer wall of the outer tube (3) with a swivel structure, for releasing and contracting under tension.

2. The barrel of a rectal ligation device according to claim 1, characterized in that, The outer sleeve (3) is snapped onto the outer wall of the negative pressure pipe head (2).

3. The barrel of a rectal ligation device according to claim 2, characterized in that, The negative pressure tube head (2) is provided with a first limiting protrusion (2-1), and the inner wall of the outer tube (3) is provided with an L-shaped limiting groove (3-2) corresponding to the position of the first limiting protrusion (2-1). The first limiting protrusion (2-1) is embedded in the L-shaped limiting groove (3-2) and is used to rotate and lock after the outer tube (3) is pushed in axially, so as to realize axial limiting and circumferential positioning.

4. The barrel of a rectal ligation device according to claim 1, characterized in that, The elastic wire conduit (4) includes a shell (4-1), which is detachably mounted on the negative pressure tube body (1) by fasteners; the inner side of the shell (4-1) is provided with a second sliding groove (4-2) arranged along the axial direction, and both ends of the second sliding groove (4-2) are provided with through holes (4-3).

5. The rectal ligation gun barrel according to claim 4, characterized in that, The negative pressure tube head (2) is snapped into one end of the negative pressure tube body (1).

6. The barrel of a rectal ligation device according to claim 5, characterized in that, One end of the negative pressure pipe head (2) is provided with a connecting pipe (2-2), which is connected to the inside of the negative pressure pipe head (2); the outer wall of the connecting pipe (2-2) is provided with at least one annular flange (2-3), and the inner side wall of one end of the negative pressure pipe body (1) is provided with at least one groove for engaging the connecting pipe (2-2).

7. The barrel of a rectal ligation device according to claim 6, characterized in that, The negative pressure tube body (1) and the outer shell (4-1) form a limiting groove (4-4) at one end near the negative pressure tube head (2), and the negative pressure tube head (2) is also provided with a second limiting protrusion (2-4) that cooperates with the limiting groove (4-4).

8. A rectal ligation device, characterized in that: Includes a rectal ligation gun barrel as described in any one of claims 1 to 7.

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