Forceps head part for hemostatic clip

Abstract

The forceps head component for the hemostatic clip comprises a storage barrel, a forceps head clip and an opening and closing stop pin assembly, the storage barrel is provided with a barrel cavity, and the barrel cavity comprises a limiting cavity located at the rear end of the barrel cavity; the forceps head clamp is movably arranged in the cylinder cavity and comprises a pair of clamping pieces which are oppositely arranged, and wing arms extending towards the inner wall of the corresponding cylinder cavity are arranged on the wall faces, facing the inner wall of the cylinder cavity, of the clamping pieces. The tong head clamp moves relative to the storage cylinder until the wing arm clamp is located in the limiting cavity, so that the front end parts of the pair of clamping pieces are kept in a closed state; the opening and closing stop pin assembly is installed in the cylinder cavity and arranged between the pair of clamping pieces. The clamping stability of the plier head part can be well improved after the plier head part is clamped, and the use is very convenient.

Description

Technical Field

[0001] This utility model relates to a forceps head component for hemostatic clips, belonging to the field of medical device technology. Background Technology

[0002] Currently, hemostatic clips are medical devices used to clamp and stop bleeding in tissues. They work by using the mechanical pressure generated when two clips close to compress the bleeding site and block blood flow; then, the clamp head is separated, leaving it inside the body to achieve continuous hemostasis. Chinese patent CN209203404U discloses a disposable hemostatic clip that requires two opposing locking mechanisms on the clips to engage to maintain stability after clamping the wound. This design is cumbersome and inconvenient to use. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a forceps head component for hemostatic clamps, which can greatly improve the clamping stability after clamping and is very convenient to use.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a forceps head component for hemostatic clips, comprising:

[0005] A storage tube, wherein the storage tube has a cavity, the cavity including a limiting cavity located at the rear end of the cavity;

[0006] The pliers clamp is movably disposed within the cylindrical cavity. The pliers clamp includes a pair of clamping plates arranged opposite each other. Each clamping plate has a wing arm extending toward the inner wall of the corresponding cylindrical cavity on its wall surface facing the inner wall of the cylindrical cavity. The pliers clamp moves relative to the storage cylinder until the wing arm is engaged in the limiting cavity so that the front ends of the pair of clamping plates remain in a closed state.

[0007] An opening and closing stop pin assembly is installed inside the cylindrical cavity and positioned between a pair of clamping plates.

[0008] Furthermore, the inner wall of the storage cylinder extends inward to form a step, and the step is provided with a through hole. The cylinder cavity is divided by the step into an opening and closing cavity at the front and a limiting cavity at the rear. The wing arm is adapted to abut against the rear end face of the step.

[0009] Furthermore, to facilitate the release of the forceps head component from the hemostatic clamp, the rear end of the storage tube is provided with a blocking tube wall, on which an inlet / outlet hole is opened.

[0010] Furthermore, in order for the wing arm to fit well with the limiting cavity, the wing arm is positioned obliquely forward.

[0011] Furthermore, the pliers clamp also includes a connecting arm, on both sides of which are connected to the rear ends of a pair of clamping plates.

[0012] Furthermore, to facilitate the release of the forceps head clamp from the hemostatic clamp, the connecting arm is provided with a connecting hole.

[0013] Furthermore, the connecting arm has a force-reducing groove around the connecting hole.

[0014] Furthermore, the opening and closing stop pin assembly is detachably installed inside the cylinder cavity. The opening and closing stop pin assembly includes an upper stop seat and a lower stop seat that are movably sleeved together, and an elastic element disposed between the upper stop seat and the lower stop seat.

[0015] Furthermore, a limiting mechanism is provided between the upper abutment and the lower abutment. The limiting mechanism includes an outwardly protruding edge and an inwardly recessed retaining ring, which are adapted to engage in abutment.

[0016] Furthermore, in order to facilitate the installation of the opening and closing stop pin assembly inside the cylinder cavity, the inner wall of the cylinder cavity has a locking groove, and the opening and closing stop pin assembly is limited in the locking groove.

[0017] After adopting the above technical solution, the storage cylinder of the clamp head component of this utility model is provided with a limiting cavity, and the wing arm extending from the clamping plate toward the inner wall of the corresponding cylinder cavity is positioned in the limiting cavity by the wing arm, thereby maintaining the clamping state of the clamp head component after release, improving the clamping stability of the clamp head component, and facilitating hemostasis. Attached Figure Description

[0018] Figure 1 This is a perspective view of the forceps head component for the hemostatic clip of this utility model;

[0019] Figure 2 This is a structural cross-sectional view of the forceps head component for hemostatic clips of this utility model;

[0020] Figure 3 This is a perspective view of the pliers clamp of this utility model;

[0021] Figure 4 This is a cross-sectional view of the structure of the storage tube of this utility model;

[0022] Figure 5 This is a structural cross-sectional view of the opening and closing stop pin assembly of this utility model;

[0023] Figure 6 for Figure 3 Enlarged view of part A in the image; where,

[0024] 1. Storage tube; 11. Cylinder cavity; 11a. Limiting cavity; 11b. Opening and closing mating cavity; 12. Step; 12a. Through hole; 13. Blocking cylinder wall; 13a. Inlet and outlet hole; 14. Engaging groove;

[0025] 2. Clamping head; 21. Clamping plate; 21a. Wing arm; 21b. Engaging teeth; 22. Connecting arm; 22a. Connecting hole; 23. Force reduction groove;

[0026] 3. Opening and closing stop pin assembly; 31. Upper stop seat; 31a. Snap ring; 32. Lower stop seat; 32a. Edge; 33. Elastic element. Detailed Implementation

[0027] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] like Figures 1-6 As shown, a forceps head component for hemostatic clips includes:

[0029] Storage tube 1, storage tube 1 has a cavity 11, the cavity 11 includes a limiting cavity 11a located at the rear end of the cavity 11;

[0030] The clamp 2 is movably disposed within the cylindrical cavity 11. The clamp 2 includes a pair of clamping plates 21 arranged opposite each other. The clamping plates 21 have wing arms 21a extending toward the inner wall of the corresponding cylindrical cavity 11 on the wall surface facing the inner wall of the cylindrical cavity 11. The clamp 2 moves relative to the storage cylinder 1 until the wing arms 21a are locked in the limiting cavity 11a so that the front ends of the pair of clamping plates 21 remain closed.

[0031] The opening and closing stop pin assembly 3 is installed inside the cylinder cavity 11 and positioned between a pair of clamping plates 21.

[0032] In this embodiment, as Figure 2 As shown, the direction of the dashed arrow is forward, and the opposite direction is backward.

[0033] In this embodiment, the clamp head 2 is initially positioned in the front part of the cavity 11, with most of the clamp head 2 exposed outside the storage cylinder 1 and only a small portion stored inside the cavity 11. At this time, the inner wall surfaces of the pair of clamping plates 21 are in contact with the outer surface of the opening and closing stop pin assembly 3, and under the support of the opening and closing stop pin assembly 3, the pair of clamping plates 21 are in an open state. When the clamp head 2 is moved backward, the pair of clamping plates 21 gradually close under the squeezing action of the front end of the inner wall of the cavity 11, thereby clamping the area requiring hemostasis. When the clamp head 2 moves relative to the storage cylinder 1 until the wing arm 21a is locked in the limiting cavity 11a, the clamp head 2 cannot move forward to the point where the pair of clamping plates 21 are in an open state, thus keeping the pair of clamping plates 21 in a closed state at all times, improving the clamping stability of the clamp head component, which is beneficial for hemostasis.

[0034] Specifically, such as Figure 2 , 4As shown, the limiting cavity 11a can be formed by the following structure: a step 12 extends inward from the inner wall of the cavity 11 of the receiving cylinder 1, and a through hole 12a is provided on the step 12. The cavity 11 is divided by the step 12 into an opening and closing engagement cavity located at the front and a limiting cavity 11a located at the rear; the wing arm 21a is adapted to abut against the rear end face of the step 12.

[0035] Specifically, such as Figure 2 , 4 As shown, in order to facilitate the release of the forceps head component of the hemostatic clamp, the rear end of the storage cylinder 1 is provided with a blocking cylinder wall 13, and the blocking cylinder wall 13 has an inlet / outlet hole 13a; the inlet / outlet hole 13a is used for the connecting parts on the hemostatic clamp that are connected to the forceps head component to enter and exit.

[0036] Specifically, such as Figure 3 , 6 As shown, in order for the wing arm 21a to fit well with the limiting cavity 11a, the wing arm 21a can be set obliquely forward.

[0037] Specifically, such as Figure 3 , 6 As shown, the pliers clamp 2 also includes a connecting arm 22, with the rear ends of a pair of clamping plates 21 connected to both sides of the connecting arm 22; in this embodiment, the pliers clamp 2 can be made as a single piece.

[0038] Specifically, such as Figure 3 , 6 As shown, in order to facilitate the release of the hemostatic clamp head clamp 2, the connecting arm 22 is provided with a connecting hole 22a; the connecting hole 22a is used for connecting the connecting release shaft in the connecting parts of the hemostatic clamp to the head clamp 2.

[0039] Specifically, such as Figure 3 , 6 As shown, the connecting arm 22 has a force-reducing groove 23 around the connecting hole 22a. In this embodiment, there are four force-reducing grooves 23 around the connecting hole 22a, but the number of force-reducing grooves 23 is not limited to this. When the clamping head 2 is pulled backward by the connecting release shaft until the connecting arm 22 of the clamping head 2 abuts against the blocking cylinder wall 13 of the receiving cylinder 1, the connecting release shaft can detach from the connecting hole 22a or tear the part of the connecting arm 22 where the connecting hole 22a is provided, thereby achieving separation. The provision of the force-reducing groove 23 is more conducive to this separation.

[0040] Specifically, such as Figure 2 , 5 As shown, the opening and closing stop pin assembly 3 can be detachably installed in the cylinder cavity 11. The specific structure of the opening and closing stop pin assembly 3 can be as follows to facilitate its installation in the cylinder cavity 11: it includes an upper stop seat 31 and a lower stop seat 32 that are movably sleeved together, and an elastic element 33 disposed between the upper stop seat 31 and the lower stop seat 32.

[0041] In this embodiment, the elastic element 33 can specifically be a spring.

[0042] Specifically, such as Figure 5 As shown, a limiting mechanism is provided between the upper abutment 31 and the lower abutment 32. The limiting mechanism includes an outwardly protruding edge 32a and an inwardly recessed retaining ring 31a, which are adapted to abut against each other. In this embodiment, the edge 32a is disposed on the lower abutment 32, and the retaining ring 31a is disposed on the upper abutment 31; of course, in some embodiments, the edge 32a may also be disposed on the upper abutment 31, and the retaining ring 31a may be disposed on the lower abutment 32.

[0043] Specifically, such as Figure 2 As shown, in order to facilitate the installation of the opening and closing stop pin assembly 3 in the cylinder cavity 11, the inner wall of the cylinder cavity 11 has a locking groove 14, and the opening and closing stop pin assembly 3 is limited in the locking groove 14; the locking groove 14 can be specifically set on the inner wall of the opening and closing mating cavity 11b.

[0044] Specifically, such as Figure 1 As shown, a pair of clips 21 have bite teeth 21b between their front ends that are configured to engage the tissue.

[0045] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A forceps head component for hemostatic clips, characterized in that, include: Storage tube (1), the storage tube (1) is provided with a cavity (11), the cavity (11) includes a limiting cavity (11a) located at the rear end of the cavity (11); The pliers clamp (2) is movably disposed within the cylindrical cavity (11). The pliers clamp (2) includes a pair of clamping plates (21) arranged opposite to each other. The clamping plates (21) have wing arms (21a) extending toward the inner wall of the corresponding cylindrical cavity (11) on the wall surface facing the inner wall of the cylindrical cavity (11). The pliers clamp (2) moves relative to the storage cylinder (1) until the wing arms (21a) are engaged in the limiting cavity (11a) so that the front ends of the pair of clamping plates (21) remain closed. An opening and closing stop pin assembly (3) is installed inside the cylindrical cavity (11) and placed between a pair of clamping plates (21).

2. The forceps head component for hemostatic clips according to claim 1, characterized in that, The inner wall of the cavity (11) of the storage cylinder (1) extends inward to form a step (12), and the step (12) is provided with a through hole (12a). The cavity (11) is divided by the step (12) into an opening and closing cavity at the front and a limiting cavity (11a) at the rear. The wing arm (21a) is adapted to abut against the rear end face of the step (12).

3. The forceps head component for hemostatic clips according to claim 1, characterized in that, The rear end of the storage tube (1) is provided with a blocking tube wall (13), and the blocking tube wall (13) has an inlet / outlet hole (13a).

4. The forceps head component for hemostatic clips according to claim 1, characterized in that, The wing arm (21a) is positioned diagonally forward.

5. The forceps head component for hemostatic clips according to claim 1, characterized in that, The clamp (2) also includes a connecting arm (22), on both sides of which are connected to the rear ends of a pair of clamping plates (21).

6. The forceps head component for hemostatic clips according to claim 5, characterized in that, The connecting arm (22) is provided with a connecting hole (22a).

7. The forceps head component for hemostatic clips according to claim 6, characterized in that, The connecting arm (22) has a force-reducing groove (23) around the connecting hole (22a).

8. The forceps head component for hemostatic clips according to claim 1, characterized in that, The opening and closing stop pin assembly (3) is detachably installed in the cylindrical cavity (11). The opening and closing stop pin assembly (3) includes an upper stop (31) and a lower stop (32) that are movably sleeved together, and an elastic element (33) disposed between the upper stop (31) and the lower stop (32).

9. The forceps head component for hemostatic clips according to claim 8, characterized in that, A limiting mechanism is provided between the upper abutment (31) and the lower abutment (32). The limiting mechanism includes an outwardly protruding edge (32a) and an inwardly recessed retaining ring (31a). The edge (32a) and the retaining ring (31a) are adapted to abut against each other.

10. The forceps head component for hemostatic clips according to claim 1, characterized in that, The inner wall of the cylindrical cavity (11) has a locking groove (14), and the opening and closing stop pin assembly (3) is limited in the locking groove (14).

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