Absorbable human duct tissue ligation clip

Abstract

The present invention relates to an absorbable human duct tissue ligation clamp, which is made of biodegradable material and includes a V-shaped buckle arm and a closing arm. The front end of the buckle arm is provided with a puncture head, and the puncture head is provided with a buckle hook. The closing arm is provided with a buckle tongue that matches the buckle hook to achieve the fixation of the buckle arm and the closing arm. The outer sides of the front ends of the buckle arm and the closing arm are respectively provided with fixed columns. The outer sides of the buckle arm are provided with a first pulling column, and the outer sides of the closing arm are provided with a second pulling column. During the closing process of the ligation clamp, the first pulling column and the second pulling column can respectively pull and drive the corresponding fixed column to quickly fall off from the clamp applier, thereby achieving the falling off of the ligation clamp in the clamp applier. The ligation clamp of the present invention has a simple structure, a compact design, and is easy to use. The locking structure of the buckle hook and the buckle tongue improves the stability of the ligation clamp after closing. During the closing process, the pulling column pulls the fixed column to separate the ligation clamp from the clamp applier, and smoothly completes the clamping action.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an absorbable human duct tissue ligation clip. Background Art

[0002] Ligation clips are medical devices used to ligate blood vessels and other ductal tissues during laparoscopic surgery. They are also clinically referred to as vascular clips or tissue clips. Depending on the material, ligation clips are primarily categorized as titanium, non-absorbable, and absorbable. Titanium clips are prone to loosening, migration, or premature detachment after postoperative edema subsides, compromising closure effectiveness. Non-absorbable clips, such as the classic Hem-O-Lok plastic ligation clip developed by Teleflex (USA), are made of non-absorbable POM plastic. Because these clips are non-biodegradable, they are implanted in the human body for a short period of time and then no longer needed. Scientific research has shown that these lifelong devices pose health risks. Therefore, absorbable clips hold great promise for clinical application. However, these clips must not only possess the necessary elastic opening and closing functions and puncture closure capabilities, but also must be designed to prevent the clip from falling out during use and ensure easy detachment after closure to meet clinical needs. Summary of the Invention

[0003] The invention aims to solve the problems that the existing ligation clamp is easy to fall off and difficult to be detached after being fixed, and provides an absorbable human duct tissue ligation clamp.

[0004] The present invention adopts the following technical solution: an absorbable human duct tissue ligation clamp, the ligation clamp is made of biodegradable material, and includes a V-shaped clasp arm and a closing arm, the ends of the clasp arm and the closing arm are connected, the front end of the clasp arm is a closing end, the front end of the clasp arm is provided with a puncture head, the puncture head is connected to a closing hook, the front end of the closing arm is a closed end, the front end of the closing arm is provided with a groove, the groove is provided with a closing tongue that matches the closing hook, and after the puncture head passes through the groove, the closing hook and the closing tongue are locked and fixed to achieve the fixation of the clasp arm and the closing arm;

[0005] A first fixed column is provided on the outer side of the front end of the buckle arm, and a first pulling column is provided on the outer side of the buckle arm. During the closing process of the ligation clip, the first pulling column can pull the first fixed column to quickly fall off from the clip applier;

[0006] A second fixing column and a third fixing column are respectively provided at both ends of the arm-closing groove, and a second pulling column is provided on the outside of the arm. During the closing process of the ligation clip, the second pulling column can pull the second fixing column and the third fixing column to quickly fall off from the clip applier.

[0007] Furthermore, the ends of the buckle arm and the closing arm are hingedly connected or integrally fixed.

[0008] Furthermore, the distance between the first pulling column and the first fixed column is 1.0-5.0 mm, and the distance between the second pulling column and the second fixed column and the third fixed column is 1.0-5.0 mm.

[0009] In the present invention, the distance between the moving column and the corresponding fixed column can ensure that the pulling force of the moving column on the fixed column is maximized, and when the ligation clamp is closed, the moving column can quickly drive the fixed column to slide, so that the fixed column is separated from the fixed groove of the clamp applier, thereby achieving the clamping effect.

[0010] Furthermore, the inner surfaces of the buckle arm and the closing arm relative to each other are both provided with a plurality of anti-slip teeth.

[0011] The anti-slip teeth in the present invention can increase the friction between the clamping arm, the closing arm and the clamped pipe.

[0012] Furthermore, the inner sides of the buckle arm and the closing arm relative to each other are both convex arc surfaces.

[0013] Furthermore, the puncture head is bent in an arc shape at the front end of the buckle arm.

[0014] Furthermore, the outer side of the buckle hook is provided with a cutting edge structure to assist the puncture head in puncturing tissue surrounding the blood vessel.

[0015] The arrangement of the buckling hook and the puncture head of the cone structure in the present invention enables the ligation clamp to puncture the tissue around the blood vessel during the closing process.

[0016] The advantages of the present invention are as follows:

[0017] (1) The ligation clip of the present invention has a simple structure, a compact design, and is easy to use. After the ligation clip is closed, the snap hook of the snap arm and the snap tongue on the snap arm snap together. The locking structure of the snap hook and the snap tongue can increase the effective locking force after closure, thereby improving the stability of the ligation clip after closure. The ligation clip is made of biodegradable material and is degraded and absorbed after use in the human body. No foreign matter remains in the body, and the degradation time is controllable, thereby having good safety.

[0018] (2) The rear end of the fixed column of the ligation clip of the present invention is provided with a pulling column for separating the fixed column from the clip applier during the closing process, so that the separation of the ligation clip from the clip applier is smoother, the closing efficiency of the ligation clip is improved, and the efficiency of the operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the absorbable human duct tissue ligation clip in Example 1 of the present invention.

[0020] Figure 2 Schematic diagram of the split structure of the absorbable human duct tissue ligation clip in Example 1 of the present invention.

[0021] Figure 3 Schematic diagram of the installation structure of the absorbable human duct tissue ligation clip in embodiment 1 of the present invention.

[0022] Figure 4 This is a schematic diagram of the absorbable human duct tissue ligation clamp in Example 1 of the present invention when clamping a blood vessel.

[0023] Figure 5 This is a schematic diagram of the absorbable human duct tissue ligation clamp in Example 1 of the present invention in use, clamping a blood vessel to close it.

[0024] Figure 6 This is a schematic diagram of the absorbable human duct tissue ligation clamp in Example 1 of the present invention when clamping a blood vessel.

[0025] Figure 7 This is a schematic diagram of the absorbable human duct tissue ligation clamp in Example 1 of the present invention in use, clamping a blood vessel to close it.

[0026] Figure 8 Schematic diagram of the structure of the absorbable human duct tissue ligation clip in the second embodiment of the present invention.

[0027] Figure 9 This is a schematic structural diagram of the absorbable human duct tissue ligation clip and the clip applier of the present invention.

[0028] Explanation of the accompanying drawings: buckle arm 1, closing arm 2, anti-slip teeth 3, puncture head 4, buckle hook 5, first fixed column 6, first pull column 7, second fixed column 8, third fixed column 9, second pull column 10, buckle tongue 11, sleeve 12, hinge shaft 13, hinge ring 14, groove 15, clamp applier 16. Implementation Method

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described below with reference to the specific drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0031] like Figure 1-Figure 7As shown, an absorbable human duct tissue ligation clamp is made of a polymer degradable biomaterial. The ligation clamp includes a clasp arm 1 and a closing arm 2. The ends of the clasp arm 1 and the closing arm 2 are hinged and form a V-shaped structure. The end of the clasp arm 1 is provided with a shaft sleeve 12, and the shaft sleeve 12 is provided with a hinge shaft 13. The end of the closing arm 2 is provided with a hinge ring 14, and the hinge shaft 13 is sleeved in the hinge ring 14. The closing arm 1 and the clasp arm 2 open and close along the hinge shaft 13.

[0032] The front end of the buckle arm 1 is provided with a puncture head 4, on which a fastening hook 5 is provided. The front end of the closing arm 2 is provided with a groove 15, on which a fastening tongue 11 is provided that matches the fastening hook 5. After the puncture head 4 passes through the groove 15, the fastening hook 5 and the fastening tongue 11 are locked and fixed to achieve the closure of the buckle arm 1 and the closing arm 2.

[0033] A first fixed column 6 is provided on the outer side of the front end of the buckle arm 1, and a first pulling column 7 is provided on the outer side of the buckle arm 1. A second fixed column 8 and a third fixed column 9 are respectively provided on the outer side of the groove 15 at the front end of the closing arm 2, and a second pulling column 10 is provided on the outer side of the closing arm 2. The first pulling column 7 and the second pulling column 10 are both cylindrical. The first pulling column 7 on the buckle arm 1 can pull and drive the first fixed column 6 to disengage from the jaws of the clamp when the ligation clamp is closed, and the second pulling column 10 on the closing arm 2 can pull and drive the second fixed column 8 and the third fixed column 9 to disengage from the jaws of the clamp when the ligation clamp is closed. The inner sides opposite to the buckle arm 1 and the closing arm 2 are both convex arc surfaces, and the puncture head 4 is bent in an arc shape at the front end of the buckle arm 1, and the buckle hook 5 is inclined toward the inner side of the buckle arm 1. The outer side of the buckle hook is set to a cutting edge structure to assist the puncture head in puncturing the tissue around the blood vessels, and the inner surfaces opposite to the buckle arm 1 and the closing arm 2 are both provided with a number of anti-slip teeth 3. Example

[0034] like Figure 8 As shown, an absorbable human duct tissue ligation clip is made of a metal degradable biomaterial and includes a clasp arm 1 and a closing arm 2. The clasp arm 1 and closing arm 2 are integrally injection molded. The ends of the clasp arm 1 and closing arm 2 are integrally angled. The front end of the clasp arm 1 is provided with a puncture head 4, which is connected to a fastening hook 5. The front end of the closing arm 2 is provided with a groove 15, and the groove 15 is provided with a fastening tongue 11 that cooperates with the fastening hook 5.

[0035] A first fixed column 6 is provided on the outer side of the front end of the buckle arm 1, and a first moving and pulling column 7 is provided on the outer side of the buckle arm 1. The first moving and pulling column 7 on the buckle arm 1 pulls and drives the first fixed column 6 to fall off from the clamp during the closing process of the ligation clamp. A second fixed column 8 and a third fixed column 9 are provided on the outer side of the groove 15 of the closing arm 2, and a second moving and pulling column 10 is provided on the outer side of the closing arm 2. The second moving and pulling column 10 on the closing arm 2 pulls and drives the second fixed column 8 and the third fixed column 9 to detach from the jaws of the clamp during the closing process of the ligation clamp. The inner sides opposite to each other of the buckle arm 1 and the closing arm 2 are both convex arc surfaces, and the puncture head 4 is bent in an arc shape at the front end of the buckle arm. The buckle hook 5 is inclined toward the inner side of the buckle arm, and the outer side of the buckle hook is provided with a blade structure to assist the puncture head in puncturing the tissue around the blood vessel. The inner surfaces opposite to each other of the buckle arm 1 and the closing arm 2 are both provided with a number of anti-slip teeth 3.

[0036] Working principle: Figure 9 As shown, the ligation clamp in the present invention needs to be pre-installed into a matching clamp applier 16 when in use, and the first fixed column 6 on the buckle arm 1 is correspondingly clamped in the fixed groove in the clamp applier, and the second fixed column 8 and the third fixed column 9 on the closing arm are respectively correspondingly clamped in the fixed groove of the clamp applier. When it is necessary to ligate and close a blood vessel or other pipeline, the jaws of the clamp applier are clamped on both sides of the blood vessel, and the jaws of the clamp applier are closed. The first pulling column 7 slides along the contact surface with the clamp applier after being acted upon by an external force. At the same time, the sliding traction of the first pulling column 7 drives the first fixed column 6, so that the first fixed column 6 is disengaged from the fixed groove on the clamp applier. Similarly, during the closing process, the second pulling column 10 slides along the contact surface with the clamp applier after being acted upon by an external force. The sliding traction of the second pulling column 10 The second fixing column 8 and the third fixing column 9 are driven so that the second fixing column 8 and the third fixing column 9 are separated from the fixing groove on the clamp applier, thereby realizing the separation of the buckle arm 1 and the closing arm 2 from the clamp applier. The buckle arm and the closing arm are closed under the action of external force, and the buckle arm and the closing arm realize the clamping of the clamped pipe. The buckle hook 5 on the buckle arm 1 and the buckle tongue 11 on the closing arm 2 form a stable buckle structure, realizing the closure of the pipe by the ligation clamp. The puncture head 4 can puncture the tissue around the blood vessel during the process of closing the pipe. The inner side of the buckle arm 1 and the closing arm 2 are provided with multiple anti-slip teeth 3, which can prevent the clamped blood vessels from slipping. The ligation clamp of the present invention has the opening, closing, puncture and closing functions required clinically. It can be degraded and absorbed after use, and the degradation cycle can be adjusted according to clinical needs.

Claims

1. An absorbable human duct tissue ligation clip, characterized by: The ligation clamp is made of a biodegradable material and comprises a V-shaped buckle arm (1) and a closing arm (2), the ends of the buckle arm (1) and the closing arm (2) are connected, the front end of the buckle arm (1) is a buckle end, the front end of the buckle arm (1) is provided with a puncture head (4), the puncture head (4) is connected with a buckle hook (5), the front end of the closing arm (2) is a closed end, the front end of the closing arm (2) is provided with a groove (15), the groove (15) is provided with a buckle tongue (11) matching the buckle hook (5), the puncture head (4) passes through the tissue around the blood vessel and fixes the buckle hook (5) and the buckle tongue (11) at the position of the groove (15) to achieve the fixation of the buckle arm (1) and the closing arm (2); A first fixing column (6) is provided on the outside of the front end of the buckle arm (1), and a first pulling column (7) is provided on the outside of the buckle arm (1). During the closing process of the ligation clip, the first pulling column (7) can pull and drive the first fixing column (6) to quickly fall off from the clip applier. A second fixing column (8) and a third fixing column (9) are respectively provided at both ends of the groove of the closing arm (2), and a second pulling column (10) is provided on the outer side of the closing arm (2). During the closing process of the ligation clamp, the second pulling column (10) can pull and drive the second fixing column (8) and the third fixing column (9) to quickly fall off from the clamp applier.

2. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The ends of the buckle arm (1) and the closing arm (2) are hinge-connected or integrally fixed.

3. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The distance between the first pulling column (7) and the first fixed column (6) is 1.0-5.0 mm, and the distance between the second pulling column (10) and the second fixed column (8) and the third fixed column (9) is 1.0-5.0 mm.

4. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The inner surfaces of the buckle arm (1) and the closing arm (2) facing each other are both provided with a plurality of anti-slip teeth (3).

5. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The inner sides of the buckle arm (1) and the closing arm (2) facing each other are both convex arc surfaces.

6. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The puncture head (4) is bent in an arc shape at the front end of the buckle arm (1).

7. The absorbable human duct tissue ligation clip according to claim 1, characterized in that: The buckle hook (5) is inclined toward the inner side of the buckle arm (1), and the outer side of the buckle hook (5) is provided with a cutting edge structure capable of assisting the puncture head (4) in puncturing tissue surrounding the blood vessel.

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