Ligation clip

Abstract

The utility model discloses a ligation clip which comprises a lower arch-shaped arm, a hinge and an upper arch-shaped arm, the lower arch-shaped arm is rotatably connected with the upper arch-shaped arm through the hinge, the inner wall of the upper arch-shaped arm is provided with a trapezoidal groove, the outer wall of the upper arch-shaped arm is provided with an upper positioning boss, the outer wall of the lower arch-shaped arm is provided with a lower positioning boss, and the outer wall of the lower arch-shaped arm is provided with a locking groove. A lock head is arranged on the outer wall of the upper arch-shaped arm, the lock groove is movably connected to the inner wall of the lock head, the lower arch-shaped arm comprises the lock groove, a lower positioning boss, an arc-shaped pressing strip and anti-skid teeth, the upper arch-shaped arm comprises an upper positioning boss, the lock head, a trapezoidal groove and an anti-skid groove, and the anti-skid teeth are meshed with the anti-skid groove. By means of the structure, the tissue blood vessel cannot move and slip in the axial direction of the tissue blood vessel when the tissue blood vessel is clamped and closed, meanwhile, the anti-skid capacity is further improved through meshing of the anti-skid teeth and the anti-skid grooves, the anti-skid function is achieved in the axial direction and the radial direction, and the tissue needing to be closed can be evenly stressed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments for surgical operations, in particular to a ligation clip. Background Art

[0002] Ligation clips are widely used in the field of surgery, and are usually used to ligate tubular tissues or blood vessels to stop blood flow in minimally invasive surgery. Ligation clips effectively reduce the operation time and are particularly suitable for ligation and hemostasis operations in small-field minimally invasive surgeries such as laparoscopic surgery. Ligation clips must meet safety and reliability requirements, and should be able to provide a firm, safe and durable clamp, and be able to withstand the applied force to avoid sliding along the tissue.

[0003] When applying for the present invention, the applicant found through searching that a Chinese patent disclosed a "ligation clip", and its application number is "CN201310334127.2". The patent mainly states that the ligation clip includes a first arc-shaped clamp arm and a second arc-shaped clamp arm, the free ends of the first arc-shaped clamp arm and the second arc-shaped clamp arm are respectively a hook and a clamp head, the first arc-shaped clamp arm has a cylindrical hook clamp body, the second arc-shaped clamp arm has two opposite clamp head clamp bodies, the first arc-shaped clamp arm and the second arc-shaped clamp arm are connected at a clamp body connection arc, the distance between the hook clamp body and the clamp head clamp body and the outermost midpoint of the clamp body connection arc is the same; the cylindrical diameter of the hook clamp body is equal to the cylindrical surface diameter of the clamp head clamp body, and the ligation clip of different sizes can be used for different surgical environments. As long as the design follows this rule, it can be well matched with the instrument, the best clamping force can be obtained, and the clip will not be damaged during the closing process.

[0004] However, it is found during the use of current hemostatic clamps that after the two clamp arms are closed, there is a phenomenon of insufficient clamping force or excessive compression between the two clamp arms. Insufficient clamping force can easily cause axial sliding or even falling off along the closed tissue or blood vessel, and radial sliding can cause damage to the tissue or blood vessel; excessive compression produces uneven tissue pressure, causing stress localization, and relative sliding of the ligated tubular object, resulting in tissue damage and / or rupture, especially when applied to tissues that are overstressed, fibrotic and / or infarcted. These all affect the ligation and hemostasis effects of the duct tissue, and there are certain defects and risks in the safety of use. Utility Model Content

[0005] The utility model aims to provide a ligation clamp with a simple structure and convenient operation. It can prevent tissue and blood vessels from moving or slipping along the axial direction when clamping them. The anti-slip ability is further improved by the engagement of the anti-slip teeth with the anti-slip grooves, so that the anti-slip function is provided in both the axial and radial directions, and the force on the tissue to be closed can be uniform.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical measures:

[0007] A ligation clamp comprises a lower bow arm, a hinge, and an upper bow arm, wherein the lower bow arm is rotatably connected to the upper bow arm via a hinge, the inner wall of the upper bow arm is provided with a trapezoidal groove, the outer wall of the upper bow arm is provided with an upper positioning boss, the outer wall of the lower bow arm is provided with a lower positioning boss, the outer wall of the lower bow arm is provided with a locking groove, the outer wall of the upper bow arm is provided with a locking head, the locking groove is movably connected to the inner wall of the locking head, the lower bow arm comprises a locking groove, a lower positioning boss, an arc-shaped pressing strip, and anti-slip teeth, the upper bow arm comprises an upper positioning boss, a locking head, a trapezoidal groove, and an anti-slip groove, and the anti-slip teeth are engaged with the anti-slip groove.

[0008] A ligation clip, wherein the lower positioning boss is arranged at one end of the lower arched arm close to (about 1 mm) a locking groove.

[0009] A ligation clip, wherein the upper positioning boss is arranged at one end of the upper bow-shaped arm close to (about 1 mm) the locking head.

[0010] A ligation clamp, wherein the lower positioning boss is fixedly connected to the outer wall of the lower bow-shaped arm.

[0011] A ligation clip, wherein the arc-shaped pressing strip is made of elastic material.

[0012] A ligation clamp, wherein the arc-shaped pressing strip is in a trapezoidal shape.

[0013] Working principle: In view of the shortcomings of existing products, a trapezoidal groove is set on the upper bow arm of the ligation clamp, and a trapezoidal cross-section arc-shaped compression strip is set on the lower bow arm of the ligation clamp. When the upper and lower bow arms of the ligation clamp rotate through the hinge and the locking grooves formed by the two bosses at the distal ends of the upper and lower bow arms are interlocked, the arc-shaped compression strip on the lower bow arm enters the trapezoidal groove set on the upper bow arm, and the clamped tissue forms a "J" shape in the axial direction, so that the tissue blood vessels will not move or slip along the axial direction of the tissue blood vessels when clamped. Arc-shaped anti-slip teeth are evenly and staggered on the inner surface of the upper and lower bow arms to anchor the tissue blood vessels and prevent the tissue blood vessels from sliding radially. The elastic arc-shaped compression strip can adapt to the uneven size and thickness of the tissue blood vessels. The elastic arc-shaped compression strip adaptively forms a wave shape according to the reaction force of each point of the tissue blood vessels when closing, avoiding the stress positioning caused by uneven pressure, causing the tissue blood vessels to slide relative to each other, resulting in tissue damage and / or rupture.

[0014] Compared with the prior art, the utility model has the following advantages and technical effects:

[0015] By arranging the anti-skid groove, the anti-skid teeth, the arc-shaped pressing strip and the trapezoidal groove, the arc-shaped pressing strip can be closed on the inner wall of the trapezoidal groove to make the clamped tissue form a "J" shape in the axial direction, so that the tissue and blood vessels will not move or slip along the axial direction when clamped, and the anti-skid ability is further improved by the engagement of the anti-skid teeth and the anti-skid groove, so that the anti-skid function is achieved in both the axial and radial directions, and the force on the tissue to be closed can be evenly distributed.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A stereoscopic diagram of a ligation clip;

[0018] Figure 2 A schematic diagram of the use of a ligation clip.

[0019] Among them: 1. lower bow-shaped arm; 11. locking groove; 12. lower positioning boss; 13. arc-shaped pressing strip; 14. anti-slip teeth; 2. hinge; 3. upper bow-shaped arm; 31. upper positioning boss; 32. locking head; 33. trapezoidal groove; 34. anti-slip groove; 4. tissue blood vessels. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Embodiment 1:

[0022] according to Figure 1 , Figure 2It can be seen that a ligation clip comprises a lower bow arm 1, a hinge 2, and an upper bow arm 3, characterized in that the lower bow arm 1 is rotatably connected to the upper bow arm 3 through the hinge 2, the inner wall of the upper bow arm 3 is provided with a trapezoidal groove 33, the outer wall of the upper bow arm 3 is provided with an upper positioning boss 31, the outer wall of the lower bow arm 1 is provided with a lower positioning boss 12, the outer wall of the lower bow arm 1 is provided with a locking groove 11, and the outer wall of the upper bow arm 3 is provided with a locking head 32, the locking groove 11 is movably connected to the inner wall of the locking head 32, the lower bow arm 1 comprises a locking groove 11, a lower positioning boss 12, an arc-shaped pressing strip 13, and an anti-slip tooth 14, the upper bow arm 3 comprises an upper positioning boss 31, a locking head 32, a trapezoidal groove 33, an anti-slip groove 34, and the anti-slip teeth 14 and the anti-slip teeth 14 are connected. The slide groove 34 is engaged, the lower positioning boss 12 is arranged at one end of the lower arch arm 1 close to (about 1 mm) the lock groove 11, and the upper positioning boss 31 is arranged at one end of the upper arch arm 3 close to (about 1 mm) the lock head 32. The lower positioning boss 12 is fixedly connected to the outer wall of the lower arch arm 1, and the arc-shaped clamping strip 13 is made of elastic material. The shape of the arc-shaped clamping strip 13 is trapezoidal. According to the drawings in the specification, the arc-shaped clamping strip 13 can adapt to the uneven size and thickness of tissue blood vessels. The arc-shaped clamping strip 13 adaptively forms a wave shape according to the reaction force of each point of the tissue blood vessel 4 when closing, so as to avoid stress positioning caused by uneven pressure, causing the tissue blood vessel 4 to slide relative to each other, resulting in tissue damage and / or rupture.

[0023] Embodiment 2:

[0024] The existing patent technology mentioned in the above background technology is a ligation clamp, which includes a V-shaped clamp body, which is connected by two arc-shaped clamp arms. Specifically, the ligation clamp of the present invention includes a V-shaped clamp body integrally formed by a first arc-shaped clamp arm and a second arc-shaped clamp arm, and the free ends of the first arc-shaped clamp arm and the second arc-shaped clamp arm are respectively a hook and a clamp head. The connection between the first arc-shaped clamp arm and the second arc-shaped clamp arm has a clamp body connection arc; the first arc-shaped clamp arm and the second arc-shaped clamp arm have two rows of staggered anti-slip teeth on the opposite inner sides, which are used to firmly bite the blood vessel through the staggered anti-slip teeth when the ligation clamp is clamped between the two arc-shaped clamp arms to prevent the blood vessel from slipping.

[0025] Conclusion: In Example 2, the first arc-shaped clamp arm and the second arc-shaped clamp arm are provided, so that the ligation clamp has a better closing force effect. In Example 1, the hinge 2, the upper arched arm 3, and the lower arched arm 1 are provided, which solves the problem that the current hemostatic clamp has a better closing force effect during use.

[0026] After the two clamp arms are closed, there is a phenomenon of insufficient clamping force or excessive compression between the two clamp arms. Insufficient clamping force can easily cause the closed tissue or blood vessel to slide axially or even fall off, and radial sliding can cause damage to the tissue or blood vessel; excessive compression can cause uneven tissue pressure, resulting in stress positioning, and relative sliding of the ligated tubular object, resulting in tissue damage and / or rupture, especially when applied to tissues subject to excessive stress, fibrosis and / or infarction. However, in Example 2, there is a lack of axial and radial anti-slip, which can easily cause the tissue and blood vessel 4 to deviate. In Example 1, after the lower arch arm 1 and the upper arch arm 3 are closed, the arc-shaped compression strip 13 and the trapezoidal groove 33 are used to form a "J"-shaped groove in the middle, and the anti-slip teeth 14 and the anti-slip groove 34 can be used in combination to further achieve the effect of anti-slip fixation.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A ligation clamp, comprising a lower bow-shaped arm (1), a hinge (2), and an upper bow-shaped arm (3), characterized in that The lower arch arm (1) is rotatably connected to the upper arch arm (3) through a hinge (2); the inner wall of the upper arch arm (3) is provided with a trapezoidal groove (33); the outer wall of the upper arch arm (3) is provided with an upper positioning boss (31); the outer wall of the lower arch arm (1) is provided with a lower positioning boss (12); the outer wall of the lower arch arm (1) is provided with a locking groove (11); the outer wall of the upper arch arm (3) is provided with a locking head (32); the locking groove (11) is movably connected to the inner wall of the locking head (32); the lower arch arm (1) comprises a locking groove (11), a lower positioning boss (12), an arc-shaped pressing strip (13), and an anti-slip tooth (14); the upper arch arm (3) comprises an upper positioning boss (31), a locking head (32), a trapezoidal groove (33), and an anti-slip groove (34); the anti-slip tooth (14) is meshed with the anti-slip groove (34).

2. A ligation clip according to claim 1, characterized in that The lower positioning boss (12) is arranged at one end of the lower bow-shaped arm (1) close to the locking groove (11).

3. A ligation clip according to claim 1, characterized in that: The upper positioning boss (31) is arranged at one end of the upper bow-shaped arm (3) close to the lock head (32).

4. A ligation clip according to claim 1, characterized in that The lower positioning boss (12) is fixedly connected to the outer wall of the lower bow-shaped arm (1).

5. A ligation clip according to claim 1, characterized in that The arc-shaped pressing strip (13) is made of elastic material.

6. A ligation clip according to claim 1, characterized in that: The shape of the arc-shaped pressing strip (13) is a trapezoid.

Images