Arthroscope free body extractor

Abstract

The utility model discloses an arthroscope free body extractor which comprises an upper clamp, an upper clamp handle, a lower clamp, a lower clamp handle, an elastic piece, an extrusion block and arc-shaped hook teeth, and the upper clamp handle and the lower clamp handle are both bent handle bodies; the lower plier handle is arranged on one side of the upper plier handle, and the bent part of the lower plier handle is hinged to the bent part of the upper plier handle; the upper clamp is of an arc-shaped structure and is arranged at the end of the upper clamp handle, and the lower clamp is arranged at the end of the lower clamp handle. Two ends of the elastic piece are respectively connected with handle ends of the upper clamp handle and the lower clamp handle; the extrusion block is arranged in the upper clamp; and arc-shaped hook teeth are arranged on the opposite surfaces of the extrusion block and the lower clamp. According to the utility model, the clamping force can be automatically controlled, and small-size free bodies can also be effectively clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to an arthroscopic loose body remover. Background Art

[0002] Arthroscopic surgery is a minimally invasive surgical method that is widely used to treat various diseases within the joint, such as arthritis, meniscus injury, etc. During arthroscopic surgery, it is often necessary to deal with loose bodies in the joint cavity (such as debris, foreign matter, etc.).

[0003] In related technologies, in order to facilitate medical personnel in removing loose bodies from patients' minimally invasive incisions and reduce operation time, the upper clamp of the remover is designed to be arc-shaped, which not only increases the clamping volume but also avoids pushing the loose body forward.

[0004] For example, the arthroscopic loose body remover with application number CN201720549102.8 consists of a clamp, a clamp body and a clamp handle, wherein the clamp body is arranged between the clamp and the clamp handle, the clamp includes an upper clamp and a lower clamp, and the upper clamp and / or the lower clamp are provided with an occlusal surface, the upper clamp is arc-shaped, and the lower clamp is straight. It is designed according to the common morphology of loose bodies in the joint, and it more comprehensively solves various problems of difficulty in removing loose bodies, improves the efficiency of loose body removal, reduces operation time, and helps patients recover. It is an ideal arthroscopic loose body remover.

[0005] However, there are still some problems in the actual use of the above patent. For example, the above patent adopts the cross-hinged method of the fixed clamp handle and the movable clamp handle. When clamping the loose body, the medical staff needs to manually control the clamping force. The loose body not only has relatively hard bone fragments, but also fragile cartilage, ligaments and other tissues. Therefore, the medical staff's manual control of the clamping force requires a high degree of accuracy; in addition, when the upper clamp with an arc structure and the lower clamp with a flat structure clamp the loose body, if the loose body is small in size, the small-sized loose body cannot be effectively clamped due to the gap between the upper clamp and the lower clamp, resulting in low efficiency in cleaning the loose body. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an arthroscopic loose body remover, comprising: an upper clamp, an upper clamp handle, a lower clamp, a lower clamp handle, an elastic member, an extrusion block and arc-shaped hook teeth, wherein the upper clamp handle and the lower clamp handle are both bent handle bodies; the lower clamp handle is arranged on one side of the upper clamp handle, and the bending part of the lower clamp handle is hingedly connected to the bending part of the upper clamp handle; the upper clamp is an arc-shaped structure, and is arranged at the end of the upper clamp handle, and the lower clamp is arranged at the end of the lower clamp handle; the two ends of the elastic member are respectively connected to the handle ends of the upper clamp handle and the lower clamp handle; the extrusion block is arranged in the upper clamp; the arc-shaped hook teeth are provided on the opposite surfaces of the extrusion block and the lower clamp.

[0008] In addition, the arthroscopic loose body extractor proposed in the present invention may also have the following additional technical features:

[0009] As a further description of the above technical solution: a hinged joint is provided at the bending portion of the upper pliers handle, and the bending portion of the lower pliers handle is hingedly connected to the hinged joint.

[0010] As a further description of the above technical solution: the elastic member is a spring, and both the upper clamp handle and the lower clamp handle are provided with connecting heads, and the two ends of the elastic member are respectively connected to the two connecting heads.

[0011] As a further description of the above technical solution: the extrusion block is a deformable soft cushion.

[0012] As a further description of the above technical solution: the extrusion block is hollow inside so as to be deformed when being extruded.

[0013] As a further description of the above technical solution: the tooth tip of the arc-shaped hook tooth faces the hinge between the upper clamp handle and the lower clamp handle.

[0014] As a further description of the above technical solution: an embedding groove is provided on the upper clamp, and an embedding block is provided on the extrusion block, and the embedding block is embedded in the embedding groove.

[0015] As a further description of the above technical solution: the tail ends of the upper and lower pliers handles are both provided with buckles to facilitate gripping by medical personnel.

[0016] As a further description of the above technical solution: the upper clamp and the upper clamp handle are integrally formed, and the lower clamp and the lower clamp handle are integrally formed.

[0017] The arthroscopic loose body extractor of the utility model has the following beneficial effects:

[0018] 1. The upper and lower clamp handles are hinged and connected by an elastic member. The rebound of the elastic member can push the ends of the upper and lower clamp handles to move the upper and lower clamps closer to each other, eliminating the need for medical staff to manually control the clamping force.

[0019] 2. By arranging an extrusion block on the inner wall of the upper clamp, the gap between the upper clamp and the lower clamp is too large, which makes it impossible to clamp small-sized loose objects. When clamping larger-sized loose objects, the extrusion block can be squeezed and deformed.

[0020] 3. The design of the arc-shaped hook teeth can better grasp loose objects, especially when facing loose objects with smooth surfaces or irregular shapes, which can significantly improve the stability of grasping and reduce the risk of slipping.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic structural diagram of an arthroscopic loose body extractor according to one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the enlarged structure of a part A according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of an extrusion block according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the arthroscopic loose body extractor in use according to one embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of an arthroscopic loose body extractor in use according to another embodiment of the present invention;

[0028] As shown in the figure:

[0029] 100, upper clamp; 200, upper clamp handle; 201, hinged head; 202, buckle; 300, lower clamp; 400, lower clamp handle; 500, elastic member; 501, connector; 600, extrusion block; 601, insert; 700, arc-shaped hook teeth. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. 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.

[0031] The following describes the arthroscopic loose body extractor according to an embodiment of the present invention in conjunction with the accompanying drawings.

[0032] like Figures 1 to 5 As shown, the arthroscopic loose body extractor of the embodiment of the present invention can not only automatically control the clamping force, but also effectively clamp small-sized loose bodies, and has a wider range of applications.

[0033] The arthroscopic loose body remover with application number CN201720549102.8 (hereinafter referred to as "this patent") consists of a clamp, a clamp body and a clamp handle, wherein the clamp body is arranged between the clamp and the clamp handle, the clamp includes an upper clamp and a lower clamp, and the upper clamp and / or the lower clamp are provided with an occlusal surface. The upper clamp is arc-shaped and the lower clamp is straight. When clamping a loose body, medical personnel need to control the two clamp handles (i.e., the movable clamp handle and the fixed clamp handle) to approach each other, so that the upper clamp and the lower clamp are close to each other to realize the clamping operation of the loose body.

[0034] However, when this patent is actually used, if a hard loose body, such as bone fragments, is clamped at a patient's joint incision, the relevant staff needs to clamp the two clamp handles together so that the upper clamp and the lower clamp can clamp the loose body together to prevent the loose body from falling off. When clamping loose bodies that are easy to break, such as ligament tissue fragments or cartilage fragments, the relevant medical staff needs to accurately control the clamping force. If the clamping is too tight, the loose body will split, and if the clamping is too loose, the loose body will fall off.

[0035] When the arthroscopic loose body extractor of the present invention is used to clamp a loose body, the upper clamp handle 200 and the lower clamp handle 400 are first pushed closer to each other, so that the upper clamp 100 and the lower clamp 300 are in an open state. When it is necessary to clamp the loose body, the squeezing of the upper clamp handle 200 and the lower clamp handle 400 is released. Under the resetting action of the elastic member 500, the upper clamp handle 200 and the lower clamp handle 400 are pushed away from each other, thereby making the upper clamp 100 and the lower clamp 300 close to each other, thereby clamping the loose body. During the clamping process, the medical staff does not need to maintain the clamping action at all times, nor does the medical staff need to control the clamping force. At the same time, due to the deformable nature of the squeezing block 600 when squeezed, when targeting large-sized loose bodies, the resetting action of the elastic member 500 will not cause the upper clamp 100 and the lower clamp 300 to crush the loose body.

[0036] In the process of clamping loose bodies in this patent, although the upper clamp with an arc structure and the lower clamp with a flat structure can clamp most loose bodies, due to the fixed gap between the upper clamp and the lower clamp, loose bodies smaller than the gap size cannot be clamped, which makes it difficult to clamp small-sized loose bodies and affects the clamping efficiency.

[0037] The arthroscopic loose body remover of the present invention provides a deformable extrusion block 600 on the upper clamp 100, thereby reducing the gap size between the upper clamp 100 and the lower clamp 300, so that some small-sized loose bodies can be clamped. At the same time, when clamping larger-sized loose bodies, the clamping volume can be expanded through the deformation of the extrusion block 600, thereby ensuring that both large-sized and small-sized loose bodies can be clamped, thereby improving the efficiency of loose body removal.

[0038] The upper jaw and / or the lower jaw of the patent are provided with an occlusal surface, the upper jaw is arc-shaped, and the lower jaw is straight, and the occlusal surface is set as a serrated occlusal surface to increase the clamping force.

[0039] The arthroscopic loose body remover of the present invention is configured with arc-shaped hook teeth 700 on the opposite surfaces of the squeezing block 600 and the lower clamp 300, with the tooth tips of the arc-shaped hook teeth 700 facing the hinge between the upper clamp handle 200 and the lower clamp handle 400. This can effectively prevent the loose body from falling off when clamping the loose body. That is, after clamping the loose body, if the loose body falls off, the tooth tips of the arc-shaped hook teeth 700 are directed in the direction that can hook the loose body, thereby reducing the possibility of the loose body falling off.

[0040] In summary, according to the arthroscopic loose body remover of the embodiment of the present invention, the upper clamp handle 200 and the lower clamp handle 400 are hinged and connected by an elastic member 500. The rebound of the elastic member 500 can push the ends of the upper clamp handle 200 and the lower clamp handle 400, so that the upper clamp 100 and the lower clamp 300 are close to each other, and there is no need for medical personnel to manually control the clamping force; by arranging an extrusion block 600 on the inner wall of the upper clamp 100, it is possible to compensate for the situation where the gap between the upper clamp 100 and the lower clamp 300 is too large, resulting in the inability to clamp small-sized loose bodies. When clamping larger-sized loose bodies, the extrusion block 600 can be squeezed and deformed; through the design of the arc-shaped hook teeth 700, the loose bodies can be better grasped, especially when facing loose bodies with smooth surfaces or irregular shapes, the grasping stability can be significantly improved and the risk of slippage can be reduced.

[0041] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. 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. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An arthroscopic loose body extractor, characterized in that: include: An upper clamp (100), an upper clamp handle (200), a lower clamp (300), a lower clamp handle (400), an elastic member (500), an extrusion block (600) and an arc-shaped hook tooth (700), wherein the upper clamp handle (200) and the lower clamp handle (400) are both bent handle bodies; the lower clamp handle (400) is arranged on one side of the upper clamp handle (200), and the bending part of the lower clamp handle (400) is hingedly connected to the bending part of the upper clamp handle (200); the upper clamp ( 100) is an arc-shaped structure and is arranged at the end of the upper clamp handle (200), and the lower clamp (300) is arranged at the end of the lower clamp handle (400); the two ends of the elastic member (500) are respectively connected to the handle ends of the upper clamp handle (200) and the lower clamp handle (400); the extrusion block (600) is arranged in the upper clamp (100); the arc-shaped hook teeth (700) are provided on the opposite surfaces of the extrusion block (600) and the lower clamp (300).

2. The arthroscopic loose body extractor according to claim 1, characterized in that: A hinge joint (201) is provided at the bending portion of the upper clamp handle (200), and the bending portion of the lower clamp handle (400) is hingedly connected to the hinge joint (201).

3. The arthroscopic loose body extractor according to claim 1, characterized in that: The elastic member (500) is a spring, and both the upper clamp handle (200) and the lower clamp handle (400) are provided with connecting heads (501), and both ends of the elastic member (500) are connected to the two connecting heads (501) respectively.

4. The arthroscopic loose body extractor according to claim 1, characterized in that: The extrusion block (600) is a deformable soft cushion.

5. The arthroscopic loose body extractor according to claim 1, characterized in that: The extrusion block (600) is hollow inside.

6. The arthroscopic loose body extractor according to claim 1, characterized in that: The tooth tip of the arc-shaped hook tooth (700) faces the hinged joint between the upper clamp handle (200) and the lower clamp handle (400).

7. The arthroscopic loose body extractor according to claim 1, characterized in that: An embedding groove is provided on the upper clamp (100), and an embedding block (601) is provided on the extrusion block (600), and the embedding block (601) is embedded in the embedding groove.

8. The arthroscopic loose body extractor according to claim 1, characterized in that: The tail ends of the upper clamp handle (200) and the lower clamp handle (400) are both provided with ring buckles (202).

9. The arthroscopic loose body extractor according to claim 1, characterized in that: The upper clamp (100) and the upper clamp handle (200) are integrally formed, and the lower clamp (300) and the lower clamp handle (400) are integrally formed.

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