Anti-loosening hemostatic clip

Abstract

The utility model relates to an anti-loosening hemostatic clip, comprising a chuck, the chuck comprising an upper limit strip and a lower limit strip symmetrically arranged in the upper and lower directions, one end of the upper limit strip and one end of the lower limit strip being connected to each other, the other end of the upper limit strip and the other end of the lower limit strip being spaced from each other, and the end of the lower limit strip being provided with a clamping hoop which is vertically arranged and separable from the lower limit strip, a positioning cavity being formed between the upper limit strip and the lower limit strip, an outer clamp which can move toward the clamping hoop and an inner clamp which is arranged at a position close to the clamping hoop and cooperates with the outer clamp being arranged in the positioning cavity, and the clamping hoop can be sleeved on the outer wall of the outer clamp. The utility model has the characteristics of preventing the inner clamp from loosening due to insufficient clamping force, ensuring a stable clamping effect on the blood vessel, and the like.

Description

Technical Field

[0001] The utility model relates to an anti-loosening hemostatic clip and belongs to the technical field of medical equipment. Background Art

[0002] In surgical operations, it is often necessary to stop bleeding from blood vessels. Common methods of hemostasis include electrocoagulation and mechanical hemostasis. Hemostatic clip hemostasis is a type of mechanical hemostasis. Its principle is to use the mechanical force generated by the two arms of the clip to clamp the blood vessels, thereby preventing blood from flowing out. This method has been widely used in clinical practice.

[0003] A Chinese patent application with publication number CN210277256U discloses a screw-on hemostatic ligation kit, comprising: a hemostatic ligation clip device and a clip applier device; the hemostatic ligation clip device comprises: an outer sleeve, an inner layer clip, an outer layer clip and a piston; the clip applier device comprises: a cavity tube and a push pin for pushing the piston to move; the cavity tube is formed with a second central through hole extending along a first straight line; the outer sleeve comprises an exposed end and an installation and fixing end inserted into and screwed into the cavity tube; a screw-on protruding from the outer surface of the installation and fixing end is formed on the outer periphery of the installation and fixing end; and a buckle groove adapted to the screw-on is formed on the inner surface of the cavity tube.

[0004] The effectiveness of hemostatic clips in stopping bleeding depends on the clamping force of the two arms. Due to the special use environment, the size of hemostatic clips is generally small, and the materials that can be used are relatively limited. Therefore, the failure of hemostatic clips is mostly caused by loosening due to insufficient clamping force. If the blood vessels are clamped only by the material strength of the hemostatic clip itself, the risk of loosening is relatively high. Utility Model Content

[0005] The utility model aims to provide an anti-loosening hemostatic clip, which solves the problems of easy loosening in the prior art.

[0006] The above technical purpose of the utility model is mainly solved by the following technical solutions: an anti-loosening hemostatic clamp, comprising a clamp head, the clamp head comprising an upper limit bar and a lower limit bar symmetrically arranged in the upper and lower directions, one end of the upper limit bar and one end of the lower limit bar are connected to each other, the other end of the upper limit bar and the other end of the lower limit bar are spaced from each other, and the end of the lower limit bar is provided with a clamping hoop which is vertically arranged and separable from the lower limit bar, a positioning cavity is formed between the upper limit bar and the lower limit bar, and a movable member which can move toward the clamping hoop is provided in the positioning cavity The outer clamp and the inner clamp which is arranged at a position close to the clamp and cooperates with the outer clamp, the clamp can be sleeved on the outer wall of the outer clamp; the upper limit bar and the lower limit bar can limit and fix the outer clamp and the inner clamp to maintain the stability of the outer clamp and the inner clamp, and the setting of the clamp allows the outer clamp to drive the inner clamp to move toward the clamp after the inner clamp enters the outer clamp and is closed, until the clamp is sleeved on the outer wall of the outer clamp, so that the clamp tightens the outer clamp together with the inner clamp, thereby preventing the inner clamp from loosening due to insufficient clamping force, thereby ensuring the stable clamping effect of the inner clamp on the blood vessel.

[0007] Preferably, one end of the fixed clamp on the lower limit bar protrudes from the end of the upper limit bar close to the clamp and forms an opening on the upper side; the structural setting in which one end of the fixed clamp on the lower limit bar protrudes from the end of the upper limit bar close to the clamp and forms an opening on the upper side can avoid the clamp blocking the blood vessel from entering the positioning cavity, and increase the space for the blood vessel to enter the positioning cavity through the opening, so as to facilitate the internal clamp to clamp the blood vessel smoothly.

[0008] Preferably, the upper and lower inner walls of the inner ring of the clamp are provided with convex strips, and the upper and lower outer walls of the outer clamp are provided with at least one groove cooperating with the convex strips; the coordinated arrangement of the above-mentioned convex strips and the grooves can realize the positioning of the clamp by the convex strips being snapped into the grooves, so that when the clamp is put on the outer clamp, the clamp can be fixed to prevent the clamp from loosening from the outer clamp due to shaking, thereby ensuring the stability of the clamp's clamping on the outer clamp.

[0009] Preferably, a positioning portion is provided on the left and right side walls of one end of the fixed clamp on the lower limit bar, and a vertically arranged limiting groove is provided on the inner side of the positioning portion and cooperates with both sides of the clamp, and the upper end of the limiting groove is open, and a protrusion protruding upward is provided on the lower limit bar corresponding to the position of the bottom of the positioning cavity close to the clamp; the arrangement of the above-mentioned positioning portion and the limiting groove enables the clamp to be vertically positioned at the end of the lower limit bar to maintain the stability of the clamp, and the upper end of the limiting groove is open, so that the clamp can be detached, and the arrangement of the above-mentioned protrusion enables the outer clamp together with the inner clamp to enter the inner ring of the clamp and gradually deviate upward through the protrusion, so that the outer clamp can drive the clamp to move upward together, thereby realizing the detachment of the clamp, the outer clamp and the inner clamp.

[0010] Preferably, the limiting groove is provided with a through hole penetrating along the thickness direction of the positioning portion, and the outer walls on both sides of the clamp located in the limiting groove are provided with convex portions abutting against the upper inner walls of the through holes; the coordinated arrangement of the through holes and the convex portions enables the clamp to be limited by the through holes through the convex portions and cannot escape from the limiting groove, thereby ensuring the stability of the clamp on the lower limiting strip. At the same time, when the outer clamp drives the clamp to deflect upward through the action of the protrusion, the convex portions can simultaneously escape from the through holes upward, thereby allowing the clamp to be directly removed from the limiting groove.

[0011] Preferably, the upper limit strip and the lower limit strip have opposite sides provided with track grooves that cooperate with the outer clamp, the left and right sides of the positioning cavity are provided with positioning arms, the ends of the positioning arms are provided with positioning holes, and the inner clamp has positioning protrusions that cooperate with the positioning holes on both sides of the end close to the outer clamp; the above-mentioned track grooves can limit and guide the movement of the outer clamp and the inner clamp, ensuring that the outer clamp and the inner clamp can move smoothly into the inner ring of the clamp, and the setting of the positioning arms and the positioning holes allows the inner clamp to be fixed in the positioning cavity when not in use through the cooperation of the positioning protrusions and the positioning holes, thereby maintaining the stability of the inner clamp, and when the outer clamp moves, the outer clamp can directly push the inner clamp to disengage the positioning arm, which is more convenient to use.

[0012] Therefore, the utility model has the characteristics of preventing the inner clamp from loosening due to insufficient clamping force and ensuring a stable clamping effect on the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the clamp.

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the chuck.

[0016] Figure 4 yes Figure 1 Schematic diagram of the structure of the inner and outer clamps. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, an anti-loosening hemostatic clip includes a chuck 1, and the chuck 1 includes an upper limit strip 11 and a lower limit strip 12 which are symmetrically arranged in the upper and lower parts, one end of the upper limit strip 11 and one end of the lower limit strip 12 are connected to each other, the other end of the upper limit strip 11 and the other end of the lower limit strip 12 are spaced from each other, and the end of the lower limit strip 12 is provided with a clamp 21 which is vertically arranged and separable from the lower limit strip 12, a positioning cavity 13 is formed between the upper limit strip 11 and the lower limit strip 12, an outer clamp 22 which can move toward the clamp 21 and an inner clamp 23 which is arranged at a position close to the clamp 21 and cooperates with the outer clamp 22 are provided in the positioning cavity 13, the clamp 21 can be sleeved on the outer wall of the outer clamp 22, and one end of the lower limit strip 12 that fixes the clamp 21 protrudes from one end of the upper limit strip 11 close to the clamp 21 and forms an opening on the upper side.

[0019] The above-mentioned inner clamp is made of flexible material and can undergo slight deformation under stress. The chuck is connected to the external clamp in a transmission manner. The clamp, inner clamp and outer clamp are arranged in sequence in the positioning cavity. The external clamp can drive the outer clamp to move toward the inner clamp. The above-mentioned clamp is annular and clamped at the end of the lower limit bar and is detachable. When the control chuck approaches the blood vessel, the blood vessel enters the positioning cavity from the opening formed between the ends of the lower limit bar and the upper limit bar, and gradually moves to the inside of the inner clamp. Then the outer clamp moves toward the inner clamp, and the upper and lower sides of the outer clamp are sleeved on the upper and lower sides of the inner clamp. As the outer clamp moves, the inner clamp gradually clamps the blood vessel until it is completely closed. Then the outer clamp continues to move toward the clamp with the inner clamp and the blood vessel until the outer clamp completely enters the inner ring of the clamp. The clamp is tightly sleeved on the outer clamp and detaches from the lower limit bar as the outer clamp is removed from the lower limit bar.

[0020] like Figure 2-4As shown, convex strips 211 are provided on the upper and lower inner walls of the inner circle of the clamp 21, and at least one clamping groove 221 cooperating with the convex strip 211 is provided on the upper and lower outer walls of the outer clamp 22. Positioning portions 121 are provided on the left and right side walls of one end of the lower limit bar 12 that fixes the clamp 21. A vertically arranged limiting groove 122 is provided on the inner side of the positioning portion 121 and cooperates with both sides of the clamp 21. The upper end of the limiting groove 122 is open. A protrusion 123 protruding upward is provided on the lower limit bar 12 at a position corresponding to the bottom of the positioning cavity 13 close to the clamp 21. A through hole 124 penetrating along the thickness direction of the positioning portion 121 is provided in the limiting groove 122. Convex portions 212 abutting against the upper inner wall of the through hole 124 are provided on the outer walls of both sides of the clamp 21 located in the limiting groove 122.

[0021] As the outer clamp moves toward the clamp with the inner clamp, the upper and lower sides of the outer clamp gradually enter the clamp. Since the outer clamp gradually becomes larger from the front end to the rear end, the outer clamp cannot move any further after it enters the clamp. The convex strips on the upper and lower sides of the clamp are just stuck in the clamping groove, making it impossible for the clamp to detach from the outer clamp. The two sides of the clamp are stuck in the limiting grooves, and the convex parts on both sides of the clamp are stuck on the upper inner wall of the through hole. As the outer clamp continues to move, the bottom of the outer clamp will contact the protrusions, causing the outer clamp to gradually deviate upward. When the outer clamp deviates upward, it drives the clamp upward as well. The convex parts on both sides of the clamp first detach from the through hole, and then the clamp as a whole deviates upward until it completely detaches from the limiting groove, thereby realizing the overall detachment of the outer clamp, the inner clamp and the clamp.

[0022] like Figure 3 , 4 As shown, the upper limiting strip 11 and the lower limiting strip 12 have opposite sides provided with a track groove 125 that cooperates with the outer clamp 22, and the left and right sides of the positioning cavity 13 are provided with positioning arms 14, and the ends of the positioning arms 14 are provided with positioning holes 141, and the inner clamp 23 is provided with positioning protrusions 231 that cooperate with the positioning holes 141 on both sides of the end close to the outer clamp 22; the above-mentioned outer clamp and inner clamp are limited by the track groove when moving in the positioning cavity, and when the outer clamp first moves toward the inner clamp along the track groove, the positioning protrusions on both sides of the inner clamp are located in the positioning holes and are fixed by the positioning arms, and when the outer clamp moves toward the inner clamp and pushes the inner clamp to move, since the inner clamp itself has a slight deformation ability, when the outer clamp pushes the inner clamp, the movement of the inner clamp can drive the positioning protrusion to slightly deform and escape from the positioning hole, so that the inner clamp can completely close the blood vessel.

Claims

1. A hemostatic clip that prevents loosening, characterized in that: The chuck (1) comprises an upper limit strip (11) and a lower limit strip (12) symmetrically arranged in the upper and lower parts, one end of the upper limit strip (11) and one end of the lower limit strip (12) are connected to each other, the other end of the upper limit strip (11) and the other end of the lower limit strip (12) are spaced from each other, and a clamp (21) arranged vertically and separable from the lower limit strip (12) is provided at the end of the lower limit strip (12), a positioning cavity (13) is formed between the upper limit strip (11) and the lower limit strip (12), an outer clamp (22) movable toward the clamp (21) and an inner clamp (23) arranged at a position close to the clamp (21) and cooperating with the outer clamp (22) are provided in the positioning cavity (13), and the clamp (21) can be sleeved on the outer wall of the outer clamp (22).

2. The anti-loosening hemostatic clip according to claim 1, characterized in that: One end of the fixing clamp (21) on the lower limit strip (12) protrudes from an end of the upper limit strip (11) close to the clamp (21) to form an opening on the upper side.

3. The anti-loosening hemostatic clip according to claim 1, characterized in that: The upper and lower inner walls of the inner ring of the clamp (21) are both provided with convex strips (211), and the upper and lower outer walls of the outer clamp (22) are both provided with at least one clamping groove (221) that cooperates with the convex strip (211).

4. The anti-loosening hemostatic clip according to claim 2, characterized in that: A positioning portion (121) is provided on the left and right side walls of one end of the fixing clamp (21) on the lower limiting strip (12), and a vertically arranged limiting groove (122) is provided inside the positioning portion (121) and cooperates with two sides of the clamp (21), and the upper end of the limiting groove (122) is open. A protrusion (123) protruding upward is provided on the lower limiting strip (12) at a position corresponding to the bottom of the positioning cavity (13) close to the clamp (21).

5. The anti-loosening hemostatic clip according to claim 4, characterized in that: A through hole (124) penetrating along the thickness direction of the positioning portion (121) is provided in the limiting groove (122), and convex portions (212) abutting against the upper inner wall of the through hole (124) are provided on the outer walls of both sides of the clamp (21) located in the limiting groove (122).

6. The anti-loosening hemostatic clip according to claim 1, characterized in that: The upper limit strip (11) and the lower limit strip (12) are provided with a track groove (125) on the opposite sides thereof and cooperate with the outer clamp (22); the left and right sides of the positioning cavity (13) are provided with positioning arms (14); the ends of the positioning arms (14) are provided with positioning holes (141); and the inner clamp (23) is provided with positioning protrusions (231) on both sides of the end thereof close to the outer clamp (22) and cooperate with the positioning holes (141).

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