Hemostatic clamp

Abstract

The hemostatic clip comprises a sleeve, a limiting piece, a clip body, a connecting piece and a pull rod, the tail of the clip body is inserted into the sleeve, and the pull rod is connected with the tail of the clip body through the connecting piece and can pull the clip body to enter and exit from the sleeve so that the clip piece can be closed or opened; the limiting piece is fixed to the head of the sleeve, and a clamping groove is formed in the sleeve. The clamp comprises two clamping pieces, the tail portions of the two clamping pieces are fixedly connected, and clamping protrusions are fixed to the tail portions of the two clamping pieces. The tail of the clamp is inserted into the sleeve, and the heads of the two clamping pieces extend out of the two sides of the limiting piece respectively; the pull rod comprises two pull pieces with the tails fixedly connected, the heads of the pull pieces tilt to form clamping grooves with upward openings, and deformable notches are formed in the heads of the pull pieces. The tail of the clamp is inserted into the clamping groove in the head of the pull rod and connected with the notch in the tail portion of the connecting piece through the connecting piece. Therefore, a stable triangular structure is formed among the pull piece, the connecting piece and the clip, so that the hemostatic clip can clamp a target at a specified position, and the operation success rate of medical staff is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a hemostatic clip. Background Art

[0002] In recent years, endoscopic tissue closure technology has become the most effective and clinically applicable method for the repair of acute digestive tract tissue trauma in patients due to its characteristics such as less trauma, fast hemostasis speed, low incidence of rebleeding, few complications, and definite curative effect. The metal tissue clip under the endoscope is one of the more widely used tissue closure means. For appropriate cases, proficient operation can effectively promote tissue closure growth and prevent tissue re-tearing, reduce adverse reactions, and greatly improve the safety and effectiveness of endoscopic treatment of digestive tract tissue tearing and bleeding. The closure principle of the tissue clip is similar to that of surgical tissue suture or ligation, both of which are physical and mechanical methods. Using the mechanical force generated when the tissue clip is closed, the surrounding tissue and bleeding blood vessels are closed and ligated together, so as to close the tissue and the bleeding site, block the blood flow and close the tissue, and achieve the purpose of closure growth. It is applicable to the treatment of non-variceal active tissue tearing bleeding and tissue closure growth after visible tissue separation lesion cutting.

[0003] The prior art with the publication number of CN204671214U discloses a clip-type repeatedly opening and closing hemostatic clip, which includes: an outer tube assembly, in which a locking step is arranged; a clip limiting piece, which is installed at the head end of the outer tube assembly; a clip, which has two clip pieces, the head parts of the clip pieces respectively extend out of the corresponding limiting holes on the clip limiting piece, the tail part of the clip is accommodated in the outer tube assembly, a connecting piece is arranged at the tail part of the clip, and locking wings that can be engaged with the locking step are arranged at the tail ends of the two clip pieces; a push-pull assembly, the head end of the push-pull assembly is provided with a deformable notch pull rod that is buckled and matched with the connecting piece; when the push-pull assembly is pulled relative to the outer tube assembly towards the tail part, the two clip pieces move towards each other under the limiting action of the clip limiting piece to achieve clamping and fixing, and the deformable notch pull rod is disengaged from the connecting piece, and at the same time, the two locking wings move away from each other so that the locking wings are respectively clamped on the locking step of the outer tube assembly.

[0004] In the prior art, the connection method of each component is complex, which makes the assembly of the hemostatic clip in the prior art complex and inefficient; and because the connection between each component is relatively loose, each component can move freely within a small range, which increases the difficulty of using the hemostatic clip. Summary of the Utility Model

[0005] In order to solve the problems that the structure of the hemostatic clip in the prior art is complex and the components can move freely, the purpose of the present utility model is to provide a hemostatic clip, which has fewer components, and the components can be relatively locked to each other, thereby reducing the assembly difficulty of the hemostatic clip and the using difficulty of the hemostatic clip.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A hemostatic clip, comprising a sleeve, a limiting piece, a clip, a connecting piece and a pull rod. The tail of the clip is inserted into the sleeve, and the pull rod is connected to the tail of the clip through the connecting piece and can pull the clip in and out of the sleeve to close or open the clip pieces; the limiting piece is fixed to the head of the sleeve, and a clamping groove is provided on the sleeve;

[0007] The clip includes two clip pieces, a clamping protrusion is fixed to the tail of the clip piece, and the tails of the two clip pieces are fixedly connected; the tail of the clip is inserted into the sleeve, and the heads of the two clip pieces respectively extend out from both sides of the limiting piece; the pull rod includes two pull pieces, the tails of the two pull pieces are fixedly connected, the head of the pull piece is upturned, the heads of the two pull pieces cooperate to form a clamping groove with an upward opening, and a deformable notch is provided on the head of the pull piece;

[0008] The tail of the clip is inserted into the clamping groove at the head of the pull rod, the tail of the clip is clamped by the clamping groove of the pull head, the connecting piece passes through the tail of the clip, the tails of the connecting piece are respectively inserted into the deformable notches at the heads of the two pull pieces, and the heads of the two pull pieces are bent and respectively press the two ends of the connecting piece.

[0009] Preferably, the two clip pieces are symmetrically arranged about the center, and the two clip pieces are symmetric about the axis of the sleeve; the two pull pieces are symmetrically arranged about the center, and the two pull pieces are symmetric about the axis of the sleeve.

[0010] Preferably, a clamping mouth is provided at the top of the clip piece; when the clip is closed, the heads of the two clip pieces are inserted into each other.

[0011] Preferably, a connecting arm is provided on the tail of the clip piece, the clamping protrusion is provided on the connecting arm and protrudes outward; when the two clip pieces are fixed, the clamping protrusion can be avoided from the clip piece through the connecting arm.

[0012] Preferably, the sleeve includes a first accommodating portion and a second accommodating portion, the inner diameter of the first accommodating portion is larger than the inner diameter of the second accommodating portion, the limiting piece is fixed to the top of the first accommodating portion, and the clamping groove is provided on the second accommodating portion.

[0013] Preferably, the clip piece includes a first connecting portion, a first transition portion, an extended portion and a clamping portion connected in sequence; the first connecting portions of the two clip pieces are mutually attached and fixedly connected, and the arc-shaped first transition portions on the two clip pieces respectively extend out from both sides of the limiting piece and abut against the sleeve; when the clip is closed, the two clamping portions abut against each other.

[0014] Preferably, a reinforcing rib is provided on the outer side surface of the first transition portion; an extended wing protruding inward is provided on the extended portion.

[0015] Preferably, the pull piece includes a second connecting portion, a second transition portion and a positioning portion connected in sequence; the second connecting portion is vertically arranged, and the positioning portion is bent outward in an arc shape; the deformable notch is provided on the positioning portion.

[0016] Preferably, the deformable notch includes a limiting portion and a drawing groove portion. The drawing groove portion communicates with the limiting portion and extends upward through the drawing piece, and the limiting portion matches the connecting piece.

[0017] Preferably, the connecting piece includes a rivet. A through hole is provided at the tail of the clip piece. The rivet passes through the through holes of the two clip pieces, and both ends of the rivet are inserted into the deformable notches of the two drawing pieces respectively.

[0018] The beneficial effect of the technical solution of the present utility model is as follows: In the above solution, the bottom of the clip is clamped by the top of the pull rod, the two ends of the pull rod are bent to press both ends of the connecting piece, and the connecting piece can press the bottom of the clip into the clamping groove at the top of the pull rod, and the clamping groove at the top of the pull rod can also clamp the bottom of the clip. In this way, a stable triangular structure can be formed among the drawing piece, the connecting piece and the clip, thereby making the movement process of the clip stable, and further ensuring that the clamping target can be clamped at the designated position of the hemostatic clip, and ensuring the success rate of the operation of medical staff. Description of the Drawings

[0019] Figure 1 Schematic diagram of the connection structure between the hemostatic clip and the handle;

[0020] Figure 2 Schematic diagram of the structure of the hemostatic clip Figure 1 ;

[0021] Figure 3 Schematic diagram of the structure of the hemostatic clip Figure 2 ;

[0022] Figure 4 Schematic diagram of the structure of the sleeve Figure 1 ;

[0023] Figure 5 Schematic diagram of the structure of the sleeve Figure 2 ;

[0024] Figure 6 Schematic diagram of the connection structure of the clip, the connecting piece and the pull rod;

[0025] Figure 7 Schematic diagram of the structure of the clip piece;

[0026] Figure 8 Schematic diagram of the structure of the drawing piece.

[0027] Reference numerals: 1. Sleeve; 11. Card slot; 12. Limiting piece; 13. Third connecting portion; 14. First accommodating portion; 15. Second accommodating portion;

[0028] 2. Drawing piece; 21. Second connecting portion; 22. Second transition portion; 23. Positioning portion; 24. Drawing groove portion; 25. Limiting portion; 26. Deformable notch;

[0029] 3. Wedge; 31. First connecting part; 32. First transition part; 33. Extension part; 34. Through hole; 35. Clamping projection; 351. Connecting arm; 36. Reinforcing rib; 37. Clamping opening; 38. Clamping part; 39. Extension wing

[0030] 4. Connecting piece; 5. Handle Detailed implementation manners

[0031] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

[0036] The following embodiment describes the first orientation Figure 2 Based on the shown orientation, Figure 2 inside is the position close to the axis of the sleeve 1, outside is the position away from the axis, the extending direction of the axis is the vertical direction, the length direction or the up and down direction, and the front and back direction is the width direction. Embodiment

[0037] As Figures 1-8 shown, a hemostatic clip includes a sleeve 1, a limiting piece 12, a pull rod, a clip, and a connecting piece 4. The tail of the clip is inserted into the sleeve 1. The pull rod is connected to the tail of the clip through the connecting piece 4 and can pull the clip in and out of the sleeve 1 to close or open the clip. The limiting piece 12 is fixed to the head of the sleeve 1, and a clamping groove 11 is formed on the sleeve 1;

[0038] The clip includes two clip pieces 3, and a clamping protrusion 35 is fixed to the tail of the clip piece 3. The tails of the two clip pieces 3 are fixedly connected. The tail of the clip is inserted into the sleeve 1, and the heads of the two clip pieces 3 respectively extend out from both sides of the limiting piece 12. The pull rod includes two pull pieces 2, the tails of the two pull pieces 2 are fixedly connected, the head of the pull piece 2 is upturned, the heads of the two pull pieces 2 cooperate to form a clamping groove with an upward opening, and a deformable limiting notch 26 is arranged at the head of the pull piece 2. The tail of the clip is inserted into the clamping groove at the head of the pull rod, and the tail of the clip is clamped by the clamping groove of the pull head. The connecting piece 4 passes through the tail of the clip piece 3, and the tails of the connecting piece 4 are respectively inserted into the deformable limiting notches 26 at the heads of the two pull pieces 2, and the heads of the two pull pieces 2 are bent and respectively press the two ends of the connecting piece 4;

[0039] The pull rod can drive the clip to move into the sleeve 1 through the connecting piece 4, so that the head of the clip gradually closes. When the clamping protrusion 35 at the tail of the clip is engaged with the clamping groove 11 of the sleeve 1, the head of the clip closes, and continuously pulling the pull rod can disconnect the connecting piece 4 from the pull rod.

[0040] With such a setting, in the above solution, the bottom of the clip is clamped by the top of the pull rod. The two ends of the pull rod are bent to press the two ends of the connecting member 4, and the connecting member 4 can press the bottom of the clip into the clamping groove at the top of the pull rod, and the clamping groove at the top of the pull rod can also clamp the bottom of the clip. In this way, a stable triangular structure can be formed among the pull tab 2, the connecting member 4 and the clip, thereby making the movement process of the clip stable, and further ensuring that the designated position of the hemostatic clip can clamp the clamping target, guaranteeing the success rate of the operation by medical staff.

[0041] In this embodiment, the two clip pieces 3 are symmetrically arranged about the center, and the two clip pieces 3 are symmetric about the axis of the sleeve 1; the two pull tabs 2 are symmetrically arranged about the center, and the two pull tabs 2 are symmetric about the axis of the sleeve 1. With such a setting, the structures of the two clip pieces 3 are the same, and the structures of the two pull tabs 2 are the same, which is convenient for the production and assembly of the hemostatic clip and ensures the consistency of mass production of the hemostatic clip.

[0042] In this embodiment, the sleeve 1 includes a first accommodating portion 14 and a second accommodating portion 15. The inner diameter of the first accommodating portion 14 is larger than that of the second accommodating portion 15. The limiting piece 12 is fixed to the top of the first accommodating portion 14, and the clamping groove 11 is arranged on the second accommodating portion 15; after the tail of the clip moves into the second accommodating portion 15, the clamping protrusion 35 on the clip abuts against the inner wall of the second accommodating portion 15 and deforms until the clamping protrusion 35 moves to the position of the clamping groove 11 and then resets, thereby realizing the clamping connection between the clip and the clamping groove 11.

[0043] In this embodiment, the clamping groove 11 is in the shape of a through hole, and the two clamping grooves 11 are symmetrically arranged on the second accommodating portion 15. With such a setting, the stability of the connection between the clip and the sleeve 1 is ensured.

[0044] In this embodiment, a third connecting portion 13 cooperating with the handle 5 protrudes from the bottom of the sleeve 1. A push-pull assembly is arranged in the handle 5, and the push-pull assembly can be connected to the tail of the pull rod, thereby pulling the clip into the sleeve 1. The structure of the push-pull assembly can refer to the prior arts such as the existing technologies with the publication numbers of CN204671214U, CN203539404U and CN216060633U, etc.

[0045] In this embodiment, there are two limiting pieces 12, and the two limiting pieces 12 are symmetrically arranged on the top of the sleeve 1.

[0046] In this embodiment, as Figure 6 and Figure 7 shown, the clip piece 3 includes a first connecting portion 31, a first transition portion 32, an extension portion 33 and a clamping portion 38 connected in sequence; the first connecting portions 31 of the two clip pieces 3 are mutually attached and fixedly connected, the first transition portions 32 of the two clip pieces 3 respectively extend from both sides of the limiting piece 12 and are connected to the sleeve 1, and when the clip is closed, the two clamping portions 38 abut against each other.

[0047] Further, in the longitudinal section of the clip 3, the first connecting portion 31 is linear, the first transition portion 32 is arc-shaped, the lengthening portion 33 is linear, and the clamping portion 38 is arc-shaped; in the cross-section of the clip 3, the clamping portion 38 is arc-shaped; when the clip is closed, the two clamping portions 38 abut against each other; when the clip is closed, the two clamping portions 38 abut against each other in a semi-spherical shape. Specifically, the longitudinal section of the first connecting portion 31 is linear, the longitudinal section of the first transition portion 32 is curved, the cross-section of the lengthening portion 33 is arc-shaped, the longitudinal section of the lengthening portion 33 is linear, the longitudinal section of the first transition portion 32 is curved, and the cross-section and longitudinal section of the clamping portion 38 are both arc-shaped.

[0048] Further, as Figure 7 shown, the width of the first connecting portion 31 and the width of the lengthening portion 33 are greater than the width of the first transition portion. A reinforcing rib 36 is provided on the outer side surface of the first transition portion 32, and the reinforcing rib 36 extends along the length direction of the first transition portion 32. The front and rear ends of the lengthening portion 33 are provided with lengthening wings 39 protruding inward.

[0049] In this embodiment, as Figure 2 shown, a limiting hole is formed by the cooperation between the limiting piece 12 and the sleeve 1, the first transition portion 32 of the clip 3 extends out of the limiting hole, and the width of the lengthening portion 33 of the clip 3 is greater than the width of the limiting hole; in the clip 3, the first transition portion 32 and the lengthening portion 33 are transitioned through an inclined surface. When the clip is clamped with the sleeve 1, the inclined surface between the first transition portion 32 and the lengthening portion 33 is stuck with the limiting hole.

[0050] In this embodiment, a clamping opening 37 is provided at the end of the clamping portion 38; when the clip is closed, the two clamping portions 38 are inserted into each other. The clamping opening 37 is V-shaped.

[0051] In this embodiment, a connecting arm 351 is provided on the first connecting portion 31, and the clamping protrusion 35 is provided on the connecting arm 351 and protrudes outward; when the two clips 3 are fixed, the clamping protrusion 35 on one clip can be avoided through the connecting arm 351 with the other clip 3, so that the clamping protrusion 35 can enter and exit the second accommodating portion 15 and the card slot 11 on the sleeve 1 through deformation. The clamping protrusion and the connecting arm cooperate to form a hook shape.

[0052] In this embodiment, as Figure 6 and Figure 8 shown, the pulling piece 2 includes a second connecting portion 21, a second transition portion 22 and a positioning portion 23 connected in sequence; the second connecting portion 21 is vertically arranged, and the positioning portion 23 is bent outward in an arc shape; a deformable limiting notch 26 is provided on the positioning portion 23. Further, the width of the second transition portion 22 is greater than that of the second connecting portion 21. With such a setting, the connection strength of the pull rod can be ensured.

[0053] In this embodiment, as Figure 3 and Figure 8As shown, the deformable notch 26 includes a limiting portion 25 and a grooving portion 24. The grooving portion 24 communicates with the limiting portion 25. The grooving portion 24 extends upward through the pulling piece 2, and the limiting portion 25 matches the connecting member 4.

[0054] In this embodiment, the connecting member 4 includes a rivet. A through hole (34) is provided at the tail of the clip piece 3. The rivet passes through the through holes 34 of the two clip pieces 3, and the two ends of the rivet are respectively inserted into the deformable limiting notches 26 of the two pulling pieces 2. The rivet is in a tight fit with the through hole.

[0055] During the assembly of the hemostatic clip, after the clip, the pull rod and the connecting member 4 are assembled into a clamping assembly, the pull rod, the connecting member and the tail of the clip of the clamping assembly are inserted into the sleeve 1 from the top of the sleeve 1, and then the two limiting pieces 12 are fixed to the top of the sleeve 1, thereby making the assembly of the hemostatic clip simpler.

[0056] When using the hemostatic clip, a pulling force is applied to the pull rod, so that the pull rod pulls the clip to move into the sleeve 1 through the rivet, and the head of the clip gradually closes; when the tail of the clip moves into the second accommodating portion 15 of the sleeve 1, the convex 35 at the tail of the clip abuts against the inner wall of the second accommodating portion 15, thereby deforming the convex 35; when the convex 35 at the tail of the clip moves to the card slot 11, the convex 35 resets and is inserted into the card slot 11, the head of the clip closes, and the two clamping portions 38 of the clip are inserted into each other; continue to apply a pulling force on the pull rod. When the pulling force on the pull rod reaches a predetermined value, the deformable notch at the head of the pull rod deforms, thereby causing the pull rod to slip off the rivet; after the pull rod and the rivet are separated, the pull rod exits from the sleeve 1, and the rear part of the clip piece 3 is fixed in the sleeve 1.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A hemostatic clip, comprising a sleeve (1), a stopper (12), a clip, a connector (4) and a pull rod, wherein the pull rod and the tail of the clip are inserted into the sleeve (1), the pull rod is connected to the tail of the clip through the connector (4), and the pull rod can pull the clip in and out of the sleeve (1) to close or open the clip; characterized in that: The limiting plate (12) is fixed to the head of the sleeve (1), and a slot (11) is provided on the sleeve (1); The clip comprises two clips (3), the tail of each clip (3) being fixed with a clamping protrusion (35) capable of being clamped with the clamping groove (11), and the tails of the two clips (3) being fixedly connected; the tail of the clip is inserted into the sleeve (1), and the heads of the two clips (3) are respectively extended from both sides of the limiting plate (12); The pull rod comprises two pull tabs (2), the tails of the two pull tabs (2) are fixedly connected, the heads of the pull tabs (2) are bent, the heads of the two pull tabs (2) cooperate to form a clamping groove opening upward, and the heads of the pull tabs (2) are provided with a deformable notch (26); The tail of the clip is inserted into the clamping groove of the pull rod head, the tail of the clip is clamped by the clamping groove of the pull head, the connecting piece (4) passes through the tail of the clip, and the two ends of the connecting piece (4) are respectively inserted into the deformable notches (26) of the heads of the two pull tabs (2), and the heads of the two pull tabs (2) are bent and respectively press the two ends of the connecting piece (4).

2. A hemostatic clip according to claim 1, characterized in that: The two clips (3) are centrally symmetrically arranged, with the axis of the sleeve (1) being the center of symmetry for the two clips (3); and the two pull tabs (2) are centrally symmetrically arranged, with the axis of the sleeve (1) being the center of symmetry for the two pull tabs (2).

3. A hemostatic clip according to claim 1, characterized in that: A clamping opening (37) is provided at the top of the clamping piece (3); when the clamp is closed, the heads of the two clamping pieces (3) are plugged into each other.

4. A hemostatic clip according to claim 1, characterized in that: A connecting arm (351) is provided on the tail of the clip (3), and the locking protrusion (35) is provided on the connecting arm (351); when the two clips (3) are fixed, the locking protrusion (35) on one clip (3) can avoid the other clip (3) through the connecting arm (351).

5. The hemostatic clip according to claim 1, characterized in that: The sleeve (1) comprises a first accommodating portion (14) and a second accommodating portion (15); the inner diameter of the first accommodating portion (14) is larger than the inner diameter of the second accommodating portion (15); the limiting plate (12) is fixed on the top of the first accommodating portion (14); and the clamping groove (11) is arranged on the second accommodating portion (15).

6. The hemostatic clip according to claim 1, characterized in that: The clip (3) comprises a first connecting portion (31), a first transition portion (32), an extension portion (33) and a clamping portion (38) which are connected in sequence; The first connecting portions (31) of the two clips (3) fit each other and are fixedly connected, and the arc-shaped first transition portions (32) on the two clips (3) extend from both sides of the limiting piece (12) and abut against the sleeve (1); when the clip is closed, the two clamping portions (38) abut against each other.

7. A hemostatic clip according to claim 6, characterized in that: A reinforcing rib (36) is provided on the outer side surface of the first transition portion (32); and an inwardly protruding extension wing (39) is provided on the extension portion (33).

8. The hemostatic clip according to claim 1, characterized in that: The pull tab (2) comprises a second connecting portion (21), a second transition portion (22) and a positioning portion (23) which are connected in sequence; the second connecting portion (21) is arranged vertically, and the positioning portion (23) is bent outwardly in an arc shape; and a deformable notch (26) is arranged on the positioning portion (23).

9. The hemostatic clip according to claim 1, characterized in that: The deformable notch (26) comprises a limiting portion (25) and a groove portion (24), the groove portion (24) being in communication with the limiting portion (25), the groove portion (24) extending upwardly through the pull tab (2), and the limiting portion (25) matching the connecting piece (4).

10. The hemostatic clip according to claim 1, characterized in that: The connecting piece (4) comprises a rivet. A through hole (34) is provided at the tail of the clip (3). The rivet passes through the through holes (34) of the two clips (3). The two ends of the rivet are respectively plugged into the deformable notches (26) of the two pull tabs (2).

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