CN219374804U - Absorbable ligature clip - Google Patents

Abstract

The utility model discloses an absorbable ligature clamp which comprises a first clamping arm and a second clamping arm which are of split structures, wherein one ends of the first clamping arm and the second clamping arm are locked through a barb locking mechanism, the other ends of the first clamping arm and the second clamping arm are movably connected through a buckling mechanism, the inner sides of the other ends of the first clamping arm and the second clamping arm are attached and connected through the buckling mechanism in an initial state, and the inner sides of the other ends of the first clamping arm and the second clamping arm are connected through a buckling mechanism gap in a locking state. According to the utility model, the traditional ligature clamp with an integrated structure is optimized into the first clamp arm and the second clamp arm with the independent structures, one ends of the two clamp arms are movably connected through the clamping mechanism, the other ends of the two clamp arms are locked through the barb locking mechanism, and after one ends of the two clamp arms are locked, the other ends of the two clamp arms slide through the clamping mechanism to generate a gap, so that part of stress is released, the ligature clamp is ensured not to break before vascular healing, and the use safety of the absorbable ligature clamp is improved.

Description

Absorbable ligature clip

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an absorbable ligature clip.

Background

Human surgery, such as focal resection in the human body, requires temporary or permanent closure of a portion of the blood vessel or organ in the body during the resection to facilitate the smooth operation, and the prior art generally uses clips of metal materials (such as titanium clips and silver clips) or non-absorbable plastic clips to ligate tissues in the cavity, and because none of these materials can be degraded or absorbed, long-term stay in the body may cause foreign body reaction or irritation to the tissues to cause inflammation, pain and other complications.

In recent years, along with the development of absorbable materials, absorbable biological clips are gradually introduced into the market, for example, a Chinese patent application with the application publication number of CN 108451575A, named as an absorbable hemostatic ligature clip, discloses a ligature clip formed by injection molding of biodegradable materials, which comprises a first clip arm and a second clip arm which are integrally formed, wherein the two clip arms form a V-shaped structure, the tail ends of the two clip arms are locked by a barb locking mechanism, and the two clip arms are mutually anastomosed after the locking, so that tissues are clamped, and safe and effective ligature is realized. For another example, the patent of Chinese utility model entitled "absorbable ligation clip" with publication No. CN 203506824U discloses an absorbable ligation clip made of biodegradable material, the absorbable ligation clip comprises a first clip arm and a second clip arm which are connected in a V shape, a bending part is arranged at the end part of the first clip arm, a jointing part corresponding to the bending part is arranged at the end part of the second clip arm, a locking part is arranged at the top end of the bending part, the jointing part is provided with a locking surface corresponding to the locking part, and clamping convex blocks are symmetrically arranged at the outer sides of the first clip arm and the second clip arm; the middle parts of the inner sides of the first clamping arm and the second clamping arm, which are opposite, are respectively provided with an inward arc-shaped bulge, and the outer sides of the first clamping arm and the second clamping arm, which are opposite, are of a straight structure. An absorbable ligature clip such as this has been widely used at present, but the commonality of the above-mentioned absorbable ligature clip is that the V-shaped structure that first arm and second arm constitute is as an organic whole type structure, and it is found in market research that partial ligature clip breaks before tissue blood vessel does not heal yet, leads to postoperative effect not good to ligature clip fracture point after closing is in the clip root, and it is found that all is because after the integrated into one piece leads to closing, has born the biggest stress at the clip root and has led to, for this reason, need to carry out structural improvement to current ligature clip urgently.

Disclosure of Invention

The utility model aims to provide an absorbable ligature clip for overcoming the defects of the prior art, so that the root of the clip is effectively prevented from being broken before the blood vessel heals, and the use safety of the absorbable ligature clip is improved.

The technical scheme for realizing the purpose of the utility model is as follows:

the utility model provides an absorbable ligature clamp, includes split type structure's first arm lock and second arm lock, barb locking mechanism closure is passed through to the one end of first arm lock and second arm lock, and the other end links to each other through the buckle mechanism activity, and during initial state, the inboard of the other end of first arm lock and second arm lock links to each other through the laminating of buckle mechanism, and during locking state, the other end inboard of first arm lock and second arm lock links to each other through the buckle mechanism clearance.

Further, the buckle mechanism comprises a clamping groove part arranged on the first clamping arm and a clamping claw part arranged in the clamping groove part in a matched mode, the clamping claw part comprises a connecting part and a clamping hook part, the connecting part and the clamping hook part are sequentially connected with the second clamping arm, a limiting step is arranged on one side, close to the first clamping arm, of the clamping groove part, and a gap is formed between the clamping hook part and the limiting step along the axial direction.

Further, the clamping claw part is composed of at least two clamping claws which are centrosymmetric along the axis direction, and gaps are arranged between the clamping claws along the radial direction.

Further, the outer wall of the connecting part is contacted with the inner wall of the limiting step, and the contact surface is an inclined surface which is obliquely arranged towards the center of the connecting part.

Further, a first arc transition surface is arranged between the connecting part and the second clamping arm, a second arc transition surface is arranged between one side of the limiting step, which is close to the second clamping arm, and the inner wall, and a rotating gap is arranged between the second arc transition surface and the first arc transition surface.

Further, a plurality of protrusions are distributed on the inner side of the first clamping arm along the length direction, and a plurality of grooves which are matched with the protrusions in a one-to-one correspondence mode are formed in the second clamping arm.

Further, the outer surface of the protrusion is in a smooth circular arc shape.

Further, the barb locking mechanism comprises a first locking part and a second locking part which are respectively integrally formed with one ends of the first clamping arm and the second clamping arm, a locking surface is arranged on one side, away from the second clamping arm, of the first locking part, the second locking part is bent towards the first clamping arm to form a barb shape, and the first locking part is suitable for being attached to the inner side of the second locking part through the locking surface to form locking.

Further, a first inclined plane and a second inclined plane which are inclined towards the second clamping arm and are connected are arranged on one side, close to the second clamping arm, of the first locking portion, a third inclined plane is arranged at the tail end of the second locking portion, and the included angle between the third inclined plane and the horizontal plane is larger than the included angle between the second inclined plane and the horizontal plane.

Further, a first limit convex part is arranged on one side of the locking surface, a second limit convex part is arranged on one side, far away from the first limit convex part, of the inner side of the first clamping arm, and a first accommodating groove and a second accommodating groove which are matched with the first limit convex part and the second limit convex part are respectively arranged on the second locking part and the second clamping arm.

By adopting the technical scheme, the utility model has the following beneficial effects:

(1) According to the utility model, the traditional ligature clamp with an integrated structure is optimized into the first clamp arm and the second clamp arm with the independent structures, one ends of the two clamp arms are movably connected through the clamping mechanism, the other ends of the two clamp arms are locked through the barb locking mechanism, and after one ends of the two clamp arms are locked, the other ends of the two clamp arms slide through the clamping mechanism to generate a gap, so that part of stress is released, the ligature clamp is ensured not to break before vascular healing, and the use safety of the absorbable ligature clamp is improved.

(2) The clamping mechanism of the utility model realizes the connection of the two clamping arms through the clamping groove part and the clamping jaw part, and the axial clearance is arranged between the clamping hook part and the limiting step to limit the clearance for the movement of the root parts of the two clamping arms, thereby ensuring that the clamping function of the clamping arms can be realized while releasing the stress.

(3) The clamping claw part is composed of the clamping claws, and gaps are arranged between the clamping claws along the radial direction, so that the clamping claws can deform towards the axis, and the clamping claw is simple in structure and convenient to assemble; meanwhile, the surface contacted with the limiting step is set to be an inclined surface, so that the slippage of the two clamping arms in a natural state is effectively prevented, and the attachment of the root parts of the clamping arms in an initial state is ensured.

(4) According to the utility model, the first arc transition surface and the second arc transition surface with the rotating gap enable the closing and clamping movement between the two clamping arms to be smoother.

(5) According to the utility model, the matched protrusions and grooves are arranged, so that the adhesion of the two clamping arms after clamping is ensured, the blood vessel or tissue is effectively prevented from sliding between the two clamping arms, and the anti-skid effect is achieved.

(6) The outer surface of the bulge is in a smooth circular arc shape, so that the blood vessel or human tissue is prevented from being injured by clamping.

(7) The utility model realizes the locking of the two clamping arms by the mutual matching of the locking surface, the first locking part and the second locking part which is bent to be in the shape of the inverted hook, and has simple structure and firm locking.

(8) The utility model is more convenient for the first locking part to enter the second locking part by arranging the surfaces which are mutually contacted in the locking process into the inclined surfaces; meanwhile, through the arrangement of the first inclined plane, the thickness of the first locking part is increased, the structural strength is improved, and the risk of fracture of the first locking part is reduced.

(9) According to the utility model, the first limit convex part and the second limit convex part are arranged, so that the two clamping arms are prevented from laterally moving during locking, and the misplacement clamping of blood vessels or human tissues is prevented.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:

FIG. 1 is a schematic view of the structure of the present utility model in an initial state;

FIG. 2 is a schematic view of the structure of the present utility model in a clamped state;

FIG. 3 is a cross-sectional view of the utility model in its initial state;

FIG. 4 is a cross-sectional view of the present utility model in a clamped state;

FIG. 5 is an enlarged view of a portion of FIG. 3 at A;

fig. 6 is a partial enlarged view at B in fig. 4.

The reference numerals in the drawings are:

the clamping device comprises a first clamping arm 1, a second limiting convex part 1-2, a protrusion 1-3, a second clamping arm 2, a groove 2-1, a locking mechanism 3, a first locking part 3-1, a locking surface 3-1-1, a first inclined surface 3-1-2, a second inclined surface 3-1-3, a first limiting convex part 3-1-4, a second locking part 3-2, a third inclined surface 3-2-1, a clamping mechanism 4, a clamping groove part 4-1, a limiting step 4-1-1, a second arc transition surface 4-1-2, a clamping jaw part 4-2, a connecting part 4-2-1, a clamping hook part 4-2-2 and a first arc transition surface 4-2-3.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1

The absorbable ligature clip as shown in fig. 1 to 6 comprises a first clamping arm 1, a second clamping arm 2, a barb locking mechanism 3 and a buckling mechanism 4, wherein the first clamping arm 1 and the second clamping arm 2 are of two independent structures, the bottom ends are locked by the barb locking mechanism 3, and the top ends are movably connected by the buckling mechanism 4. In the initial state, the inner sides of the bottom ends of the first clamping arm 1 and the second clamping arm 2 are attached and connected through the buckling mechanism 3, and in the locking state, the inner sides of the other ends of the first clamping arm 1 and the second clamping arm 2 are connected through the gap of the buckling mechanism 3, so that part of stress is released, the lower end of the ligature clamp is not broken before vascular healing is ensured, and the use safety of the absorbable ligature clamp is improved.

Specifically, the fastening mechanism 4 comprises a clamping groove part 4-1 and a clamping jaw part 4-2 which are matched with each other, the clamping groove part 4-1 is arranged on the first clamping arm, the clamping jaw part 4-2 is arranged in the clamping groove part 4-1 and consists of two clamping jaws which are arranged up and down symmetrically, a gap is arranged between the two clamping jaws along the vertical direction, and a deformation space is provided for the clamping jaws to push into the clamping groove part 4-1 during assembly. Each claw comprises a connecting part 4-2-1 and a clamping hook part 4-2-2 which are integrally formed with the second clamping arm 2 in sequence and are connected, and a limiting step 4-1-1 is arranged on one side, close to the first clamping arm 1, of the clamping groove part 4-1, so that the clamping hook part 4-2-2 is limited to be separated from the clamping groove part 4-1, and connection is achieved. A gap is axially arranged between the clamping hook part 4-2-2 and the limiting step 4-1-1, so that when the two clamping arms are opened and closed, a movable space is provided for the clamping hook part 4-2, and when the two clamping arms are closed, a gap is formed between the inner sides of the lower ends, so that stress is released. The outer wall of the connecting part 4-2-1 is contacted with the inner wall of the limiting step 4-1-1, and the contact surface is an inclined surface which is obliquely arranged towards the center of the connecting part 4-2-1, so that the slippage of two clamping arms in a natural state is effectively prevented, and the joint of the root parts of the clamping arms in an initial state is ensured. The connecting part 4-2-1 and the second clamping arm 2 are provided with a first arc transition surface 4-2-3, a second arc transition surface 4-1-2 is arranged between one side of the limiting step 4-1, which is close to the second clamping arm 2, and the inner wall, and a rotating gap is arranged between the first arc transition surface 4-2-3 and the second arc transition surface 4-1-2, so that the closing clamping movement between the two clamping arms is smoother.

The barb locking mechanism 3 is provided with a first locking part 3-1 and a second locking part 3-2 which are matched with each other, the first locking part 3-1 and the upper end of the first clamping arm 1 are integrally formed, a locking surface 3-1-1 is arranged on the left side, and the second locking part 3-2 and the upper end of the second clamping arm 2 are integrally formed and are bent leftwards and downwards in sequence to form a barb shape. When the two clamping arms are pinched during locking, the first locking part 3-1 is firstly contacted with the left side of the second locking part 3-2, deformation is generated due to extrusion, so that the first locking part 3-1 enters the inner side of the second locking part 3-2, at the moment, the two clamping arms are loosened, the locking surface 3-1-1 of the first locking part 3-2 is attached to the inner side of the second locking part 3-2, and therefore the first locking part 3-1 is limited to leave the second locking part 3-2, and locking is formed.

In order to facilitate the first locking portion 3-1 to enter the second locking portion 3-2, a first inclined plane 3-1-2 and a second inclined plane 3-1-3 which are inclined towards the second clamping arm 2 and are sequentially connected are arranged on the right side of the first locking portion 3-1, meanwhile, a third inclined plane 3-2-1 is arranged at the tail end of the second locking portion 3-2, and an included angle between the third inclined plane 3-2-1 and the horizontal plane is larger than an included angle between the second inclined plane 3-1-3 and the horizontal plane. Meanwhile, due to the arrangement of the first inclined surface 3-1-2, the thickness of the first locking part 3-1 is increased, the structural strength is improved, and the risk of breakage of the first locking part 3-1 is effectively reduced.

In order to avoid lateral movement of the two clamping arms during locking, the rear end of the locking surface 3-1-1 is provided with a first limiting convex part 3-1-4, the front end of the inner side of the first clamping arm 1 is provided with a second limiting convex part 1-2, the second locking part 3-2 and the second clamping arm 2 are respectively provided with a first accommodating groove and a second accommodating groove matched with the first limiting convex part 3-1-4 and the second limiting convex part 1-2, and when the locking is performed, the first limiting convex part 3-1-4 and the second limiting convex part 1-2 are respectively inserted into the first accommodating groove and the second accommodating groove to form limiting, so that the two clamping arms are effectively prevented from misplacement to hurt blood vessels or human tissues.

In order to prevent the blood vessel or tissue from sliding between the two clamping arms, a plurality of protrusions 1-3 are distributed on the inner side of the first clamping arm 1 along the length direction, a plurality of grooves 2-1 which are matched with the protrusions 1-3 and correspond to the protrusions 1-3 one by one are arranged on the second clamping arm 2, and after the clamping, the protrusions 1-3 are clamped into the grooves 2-1, so that the bonding of the two clamping arms is ensured, and the anti-skid effect is effectively achieved. In order to avoid pinching blood vessels or human tissues, the outer surfaces of the protrusions 1-3 of the present embodiment are in the shape of a smooth circular arc.

Clip initial state: the lower extreme of second arm lock 2 is equipped with two jack catchs, is equipped with the draw-in groove portion 4-1 of taking spacing step 4-1-1 on the first arm lock, pushes the jack catchs in draw-in groove portion 4-1 during the assembly, realizes the connection of two arm locks, is equipped with the clearance along the axial between trip portion 4-2-2 and the spacing step 4-1-1 this moment to because the contact surface of connecting portion 4-2-1 and spacing step 4-1-1 is the inclined plane for the lower extreme of two arm locks is the laminating after the assembly, prevents the slip of clip under the natural state.

Clip closed state: the lower ends of the two clamping arms can generate outward tension due to the action of stress, and due to the axial clearance between the clamping hook part 4-2-2 and the limiting step 4-1-1, the lower ends of the two clamping arms can slide outwards to release part of stress, at the moment, the connecting part 4-2-1 is extruded to deform, and the clamping hook part 4-2-2 is attached to the limiting step 4-1-1, so that the clamping performance of the ligature clamp is ensured.

According to the embodiment, the structure of the ligation clip on the market at present is optimized, the integrally formed ligation clip is optimized into the first clamping arm 1 and the second clamping arm 2 with two independent structures, the lower ends of the two clamping arms are movably connected through the clamping mechanism 4, the other ends of the two clamping arms are locked through the barb locking mechanism 3, after one ends of the two clamping arms are locked, the other ends of the two clamping arms slide through the clamping mechanism 4 to generate gaps, so that part of stress is released, the ligation clip is not broken before vascular healing is ensured, and the use safety of the absorbable ligation clip is improved.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (10)

1. An absorbable ligating clip, characterized by: including split type structure's first arm lock and second arm lock, the barb locking mechanism closure is passed through to the one end of first arm lock and second arm lock, and the other end links to each other through the buckle mechanism activity, during initial state, the inboard of the other end of first arm lock and second arm lock links to each other through the laminating of buckle mechanism, during the locking state, the other end inboard of first arm lock and second arm lock links to each other through the buckle mechanism clearance.

2. The absorbable ligating clip of claim 1, wherein: the clamping mechanism comprises a clamping groove part and a clamping claw part, wherein the clamping groove part is arranged on the first clamping arm, the clamping claw part is matched with the clamping claw part in the clamping groove part, the clamping claw part comprises a connecting part and a clamping hook part, the connecting part and the clamping hook part are sequentially connected with the second clamping arm, a limiting step is arranged on one side, close to the first clamping arm, of the clamping groove part, and a gap is axially formed between the clamping hook part and the limiting step.

3. The absorbable ligating clip of claim 2 wherein: the clamping jaw part consists of at least two clamping jaws which are centrosymmetric along the axial direction, and gaps are arranged between the clamping jaws along the radial direction.

4. The absorbable ligating clip of claim 3 wherein: the outer wall of connecting portion contacts with the inner wall of spacing step and the contact surface is the inclined plane that sets up to the center slope of connecting portion.

5. The absorbable ligating clip of claim 4 wherein: the connecting part and the second clamping arm are provided with a first arc transition surface, a second arc transition surface is arranged between one side of the limiting step, which is close to the second clamping arm, and the inner wall of the limiting step, and a rotating gap is arranged between the second arc transition surface and the first arc transition surface.

6. The absorbable ligating clip of claim 1, wherein: the inner side of the first clamping arm is provided with a plurality of protrusions in a distributed mode along the length direction, and the second clamping arm is provided with a plurality of grooves which are matched with the protrusions in a one-to-one correspondence mode.

7. The absorbable ligating clip of claim 6 wherein: the outer surface of the bulge is in a smooth circular arc shape.

8. The absorbable ligating clip of claim 1, wherein: the barb locking mechanism comprises a first locking part and a second locking part which are respectively integrally formed with one ends of the first clamping arm and the second clamping arm, a locking surface is arranged on one side, away from the second clamping arm, of the first locking part, the second locking part is bent towards the first clamping arm to form a barb shape, and the first locking part is suitable for being attached to the inner side of the second locking part through the locking surface to form locking.

9. The absorbable ligating clip of claim 8, wherein: one side of the first locking part, which is close to the second clamping arm, is provided with a first inclined plane and a second inclined plane which incline towards the second clamping arm and are connected with each other, the tail end of the second locking part is provided with a third inclined plane, and the included angle between the third inclined plane and the horizontal plane is larger than the included angle between the second inclined plane and the horizontal plane.

10. The absorbable ligating clip of claim 8, wherein: one side of the locking surface is provided with a first limit convex part, one side, far away from the first limit convex part, of the inner side of the first clamping arm is provided with a second limit convex part, and the second locking part and the second clamping arm are respectively provided with a first accommodating groove and a second accommodating groove which are matched with the first limit convex part and the second limit convex part.