Tissue forceps

Abstract

An organization clip, which includes a base, a first clip arm and a second clip arm extending from the base. The first clip arm includes a first main body part and a first clamping part. The first main body part includes a first clamping portion. The second clip arm includes a second main body part and a second clamping part. The second main body part includes a second clamping portion. The first clamping part extends from the first main body part, and the second clamping part extends from the second main body part. The first clamping part is clamped with the second clamping part to hold both the first clamping portion and the second clamping portion in the clamping position.

Description

Technical Field

[0001] The present invention relates to the technical field of minimally invasive surgical instruments, and particularly to tissue clips. Background Art

[0002] Tissue clips are commonly used to clamp tissues in minimally invasive surgeries. The principle is to fix the target tissue between two relatively arranged clip pieces through the clamping action, thereby achieving the functions of hemostasis and ligation and closure. The initial tissue clips were mainly made of metal materials, such as titanium clips, silver clips, stainless steel clips, etc. Although such tissue clips are inexpensive and easy to use, they often tend to have clamping failure phenomena such as loosening, wandering, disconnection, and premature detachment. In 1999, Teleflex Incorporated launched the Weck clip, which became a new option for tissue ligation. However, the clamping stability of the Weck clip for tissues is still not ideal, and clamping failure is likely to occur. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention aims to provide a tissue clip that can effectively prevent clamping failure. The present invention is achieved through the following technical solutions:

[0004] A tissue clip includes a base and a first clip arm and a second clip arm extending from the base. The first clip arm includes a first main body portion and a first clamping portion. The first main body portion includes a first clamping part. The second clip arm includes a second main body portion and a second clamping portion. The second main body portion includes a second clamping part. The first clamping portion extends from the first main body portion, and the second clamping portion extends from the second main body portion. The first clamping portion and the second clamping portion are held in a clamping position by the engagement of the first clamping portion and the second clamping portion.

[0005] Further, the first clamping portion includes a clamping groove, and the second clamping portion includes a cantilever. At least a part of the cantilever enters and is held in the clamping groove to achieve the engagement of the first clamping portion and the second clamping portion.

[0006] Further, the first clamping portion includes at least two of the clamping grooves.

[0007] Further, the first clamping part includes a first clamping surface, and the second clamping part includes a second clamping surface. Both the first clamping surface and the second clamping surface include convex portions.

[0008] Further, the first clip arm further includes a reinforcing portion located between the first clamping portion and the first clamping part.

[0009] Further, the first main body portion further includes a first connecting portion extending from the base portion, the first clamping portion extending from the first connecting portion; the direction in which the first clamping portion extends from the first connecting portion is substantially perpendicular to the direction in which the first clamping portion extends from the first connecting portion.

[0010] Further, the first clamping portion includes a clamping groove; the second main body portion is provided with an accommodating space, the second clamping portion includes a cantilever, and at least a part of the cantilever is located in the accommodating space; at least a part of the at least a part of the cantilever enters and is held in the clamping groove to achieve clamping connection between the first clamping portion and the second clamping portion.

[0011] Further, the second main body portion further includes a second connecting portion extending from the base portion, the second clamping portion extending from the second connecting portion; the accommodating space is a through hole provided in the second connecting portion; the second clamping portion extends from the second connecting portion to form the cantilever.

[0012] Further, after the clamping connection is achieved, the first clamping portion abuts against the wall of the accommodating space.

[0013] Further, at least a part of the cantilever includes the end of the cantilever, and the end enters and is held in the clamping groove to achieve clamping connection between the first clamping portion and the second clamping portion.

[0014] Further, the first clamping portion includes a first guiding surface disposed obliquely.

[0015] Further, the second clamping arm further includes a guiding portion, and the guiding portion includes a second guiding surface disposed obliquely.

[0016] Further, the first clamping portion includes at least two of the clamping grooves.

[0017] Further, the second main body portion further includes a second connecting portion extending from the base portion, the second clamping portion extending from the second connecting portion; the second connecting portion is provided with a through hole, and the position where the first clamping portion and the second clamping portion are clamped is located in the through hole.

[0018] The tissue clip of the present invention includes a first clip arm and a second clip arm. The first clip arm includes a first clamping portion, and the second clip arm includes a second clamping portion. The first clamping portion and the second clamping portion are clamped to clamp the tissue between the first clip arm and the second clip arm. The second clamping portion includes a cantilever. The clamping position is located in the through hole of the second main body portion. After clamping, the first clamping portion abuts against the wall of the through hole. The tissue clip of the present invention has a good clamping effect and can effectively prevent clamping failure. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the tissue clip according to the present invention;

[0020] Figure 2 is according to Figure 1 a schematic structural view of another perspective of the tissue clip shown;

[0021] Figure 3 is according to Figure 2 a schematic structural view of another perspective of the tissue clip shown;

[0022] Figure 4 is according to Figure 3 a sectional view of the tissue clip along the A-A direction shown;

[0023] Figure 5 is according to Figure 3 a schematic structural view of another perspective of the tissue clip shown;

[0024] Figure 6 is according to Figure 5 a schematic structural view of another perspective of the tissue clip shown. Detailed Description of the Invention

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings.

[0026] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] As Figures 1 to 6 shown, the tissue clip 100 of the present invention includes a base 10, a first clip arm 20 extending from the base 10, and a second clip arm 30 extending from the base 10. The base 10, the first clip arm 20, and the second clip arm 30 form a substantially U-shape, and the first clip arm 20 and the second clip arm 30 are disposed opposite to each other. The first clip arm 20 includes a first clamping portion 21, and the second clip arm 30 includes a second clamping portion 31. The first clamping portion 21 and the second clamping portion 31 are clamped to hold both the first clip arm 20 and the second clip arm 30 in a clamping position. In the clamping position, the tissue is clamped and fixed between a first clamping portion 24 of the first clip arm 20 and a second clamping portion 34 of the second clip arm 30. It should be noted that in the present invention, "A extends from B" can be achieved by integrally forming A and B. The tissue clip 100 in the present invention can be integrally formed.

[0028] The first clamping arm 20 includes a first main body portion 22. The first main body portion 22 includes a first connecting portion 23 extending from the base portion 10 and a first clamping portion 24 extending from the first connecting portion 23. The first clamping portion 21 extends from the first connecting portion 23. The first clamping portion 21 includes three clamping grooves 25 arranged adjacent to each other. The direction in which the first clamping portion 21 extends from the first connecting portion 23 is substantially perpendicular to the direction in which the first clamping portion 24 extends from the first connecting portion 23. Further, the first clamping arm 20 further includes a reinforcing portion 26. The reinforcing portion 26 is located between the first clamping portion 21 and the first clamping portion 24 to further increase the strength of the first clamping portion 21, prevent clamping failure caused by fracture at the portion where the first clamping portion 21 is combined with the reinforcing portion 26 and adjacent portions, and prevent clamping failure caused by the first clamping portion 21 being separated from the second clamping portion 31 due to a relatively large deformation. Figure 5 It is shown that the reinforcing portion 26 is located at the bottom of the first clamping portion 21. The present invention is not limited thereto, and the combination position and combination area of the reinforcing portion 26 and the first clamping portion 21 can be adjusted as needed.

[0029] The second clamping arm 30 includes a second main body portion 32. The second main body portion 32 includes a second connecting portion 33 extending from the base portion 10 and a second clamping portion 34 extending from the second connecting portion 33. The second clamping portion 31 extends from the second connecting portion 33. The second clamping portion 31 forms a cantilever when extending from the second connecting portion 33. The cantilever is at least a part of the second clamping portion 31. The cantilever includes the end of the second clamping portion 31. The cantilever is in a suspended state so that the cantilever can be elastically deformed. When the cantilever elastically deforms to allow relative movement when the first clamping portion 21 abuts against the second clamping portion 31, and when the clamping groove 25 is located at the position corresponding to the end of the cantilever (i.e., the end of the second clamping portion 31), the cantilever will restore its shape under its own elastic action, so that the end of the cantilever enters the clamping groove 25. The shape of the end of the cantilever matches the shape of the clamping groove 25. Coupled with the elastic action of the cantilever, the end of the cantilever is held in the clamping groove 25, realizing the clamping connection between the end of the cantilever and the clamping groove 25. The first clamping portion 21 has a certain strength and can form a reliable clamping connection with the cantilever to achieve effective clamping.

[0030] Further, the second connecting portion 33 is provided with a through hole 35. The through hole 35 includes a first edge 351 and a second edge 352. The extending directions of the first edge 351 and the second edge 352 are both perpendicular to the extending direction of the second main body portion 32. The first edge 351 is closer to the base portion 10 than the second edge 352. The second clamping portion 31 extends from the second connecting portion 33 to form a cantilever. The cantilever crosses the first edge 351 and enters the through hole 35. The position where the first clamping portion 21 is clamped with the second clamping portion 31 is located within the through hole 35 to increase the distance between the bottom of the first clamping portion 21 and the clamping groove 25. As described below, the position where the first clamping portion 21 is clamped with the second clamping portion 31 being located within the through hole 35 is also beneficial to improving the effectiveness of clamping. The second clamping arm 30 further includes a guiding portion 36. The guiding portion 36 extends from the second main body portion 32 in a direction generally towards the first clamping arm 20. One edge at the bottom of the guiding portion 36 coincides with the second edge 352. The end of the first clamping portion 21 includes an inclined first guiding surface 210. The guiding portion 36 includes an inclined second guiding surface 360. Both the first guiding surface 210 and the second guiding surface 360 are inclined with respect to the direction in which the first clamping portion 21 is inserted into the through hole 35. In order to keep the side surface of the first clamping portion 21 abutted against the wall of the through hole 35 after the first clamping portion 21 is clamped with the second clamping portion 31, when not extending into the through hole 35, part or all of the end of the first clamping portion 21 is located outside the through hole 35. Thus, the first guiding surface 210 and the second guiding surface 360 cooperate to provide guidance during the process of the first clamping portion 21 extending into the through hole 35. The second clamping portion 31 is hook-shaped, and the end of the second clamping portion 31 is used to abut against the clamping groove 25 of the first clamping portion 21. As Figure 4As shown, the gap between the end of the cantilever and the wall of the through hole 35 is smaller than the thickness of the first clamping portion 21. When the first clamping portion 21 extends into the through hole 35, it will first squeeze the cantilever to cause elastic deformation thereof. The elastic deformation of the cantilever increases the above-mentioned gap to allow the first clamping portion 21 to pass through. As the first clamping portion 21 moves, its clamping groove 25 is located at the position corresponding to the end of the cantilever. The cantilever will restore its shape under the action of its own elasticity, causing the end of the cantilever to enter the clamping groove 25. The shape of the end of the cantilever matches the shape of the clamping groove 25. Coupled with the elastic action of the cantilever, the end of the cantilever is held in the clamping groove 25, realizing the clamping connection between the end of the cantilever and the clamping groove 25. After the clamping connection, one side of the first clamping portion 21 away from the base portion 10 abuts against the wall of the through hole 35. After the first clamping portion 21 is clamped with the cantilever, due to the elastic action of the cantilever, the cantilever generates a pushing force on the first clamping portion 21. Since the first clamping portion 21 abuts against the wall of the through hole 35, compared with the situation where the first clamping portion 21 does not abut against the wall of the through hole 35 or other parts of the second main body portion 32, the abutment increases the strength of the first clamping portion 21 and prevents it from deforming or reduces the degree of deformation under the pushing of the cantilever, thereby avoiding damage such as cracks or even fractures of the first clamping portion 21 caused by excessive pushing force of the end of the second clamping portion 31 on the first clamping portion 21. Under the action of an external force, the first clamping portion 21 can continue to move so that the end of the cantilever is clamped with other clamping grooves 25, thereby making the distance between the first clamping portion 24 and the second clamping portion 34 closer to adapt to the clamping of tissues with different thicknesses. By providing the through hole 35 and setting the position where the first clamping portion 21 is clamped with the second clamping portion 31 within the through hole 35, compared with relying only on the strength of the first clamping portion 21 itself or supplemented with the reinforcing portion 26, the effectiveness of clamping can be further ensured.

[0031] When the tissue clamp 100 clamps the tissue, the first clamping arm 20 and the second clamping arm 30 approach each other. When the first clamping arm 20 and the second clamping arm 30 approach to a certain extent, the first guiding surface 210 of the first clamping portion 21 slides along the second guiding surface 360 of the guiding portion 36, so that the first clamping portion 21 enters the through hole 35 under the guiding of the guiding portion 36. The end of the second clamping portion 31 enters the clamping groove 25 of the first clamping portion 21 and abuts against the clamping groove 25, thereby fixing the tissue between the first clamping portion 24 and the second clamping portion 34.

[0032] The first clamping part 21 is provided with three clamping grooves 25 to adjust the tightness of the tissue clamping by the first clamping part 24 and the second clamping part 34 and to adapt to tissues of different thicknesses. The three clamping grooves 25 respectively correspond to three clamping positions. The first clamping part 24 includes a first clamping surface 240, and the second clamping part 34 includes a second clamping surface 340. The first clamping surface 240 and the second clamping surface 340 are arranged oppositely. Both the first clamping surface 240 and the second clamping surface 340 include convex parts. The arrangement of the convex parts increases the frictional force of the first clamping surface 240 and the second clamping surface 340 on the tissue, and the fixing effect on the tissue is better.

[0033] In summary, the tissue clip 100 of the present invention includes a first clip arm 20 and a second clip arm 30. The first clip arm 20 includes a first clamping part 21, and the second clip arm 30 includes a second clamping part 31. The first clamping part 21 and the second clamping part 31 are clamped to fix the tissue between the first clamping part 24 and the second clamping part 34. The second clamping part 31 includes a cantilever. The clamping position is located in the through hole 35 of the second main body part 32. After clamping, the first clamping part 21 abuts against the wall of the through hole 35. The tissue clip 100 of the present invention has a good clamping effect and can effectively prevent clamping failure.

[0034] 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. The technical solutions after the above changes, modifications, substitutions, and variations are all within the protection scope of the present invention.

Claims

1. An organization clip, which includes a base, a first clip arm and a second clip arm extending from the base. The first clip arm includes a first main body portion and a first clamping portion. The first main body portion includes a first clamping part. The second clip arm includes a second main body portion and a second clamping portion. The second main body portion includes a second clamping part, and is characterized in that The first holding portion extends from the first main body portion, the second holding portion extends from the second main body portion, and the first holding portion includes a holding slot; The second main body is provided with an accommodating space, and the second clamping part includes a cantilever, and the cantilever is in a suspended state so that the cantilever can be elastically deformed, and at least a portion of the cantilever is located in the accommodating space; at least a portion of the at least one portion of the cantilever enters and is retained in the clamping groove to realize the clamping connection between the first clamping part and the second clamping part, and the first clamping part is clamped with the second clamping part to keep both the first clamping part and the second clamping part in the clamping position. After the clamping is realized, the first clamping part is abutted against the wall of the accommodating space; the first clamping part includes a first clamping surface, and the second clamping part includes a second clamping surface, and the first clamping surface and the second clamping surface are arranged opposite to each other.

2. The tissue clip according to claim 1, characterized in that: The first holding portion includes at least two holding slots.

3. The tissue clip according to claim 1, wherein, The first clamping surface and the second clamping surface both include a convex portion.

4. The tissue clip according to claim 1, wherein: The first clamping arm further includes a reinforcement portion, and the reinforcement portion is located between the first clamping portion and the first clamping portion.

5. The tissue clip according to claim 1, characterized in that: The first main body further includes a first connecting portion extending from the base, and the first clamping portion extends from the first connecting portion; the direction in which the first clamping portion extends from the first main body is perpendicular to the direction in which the first clamping portion extends from the first connecting portion.

6. The tissue clip according to claim 1, wherein The second main body further includes a second connecting portion extending from the base, and the second clamping portion extends from the second connecting portion; the accommodating space is a through hole provided in the second connecting portion; and the second clamping portion extends from the second connecting portion to form the cantilever.

7. The tissue clip according to claim 1, wherein The at least one portion of the cantilever includes an end of the cantilever, and the end enters and is retained in the clamping groove to achieve clamping connection between the first clamping portion and the second clamping portion.

8. The tissue clip according to any one of claims 1, 6, and 7, characterized in that The first holding portion includes a first guiding surface that is inclined.

9. The tissue clip according to claim 8, characterized in that, The second clamping arm further includes a guiding portion, and the guiding portion includes a second guiding surface that is inclined.

10. The tissue clip according to claim 1, wherein, The first holding portion includes at least two holding slots.

11. The tissue clip according to claim 1, wherein: The second main body further includes a second connecting portion extending from the base, and the second clamping portion extends from the second connecting portion; the accommodating space is a through hole set in the second connecting portion, and the position where the first clamping portion and the second clamping portion are clamped is located in the through hole.

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