Arthroscopic surgery field maintainer

Abstract

The utility model relates to the field of medical instruments, in particular to an arthroscopic surgery field maintainer which comprises a maintainer body, an elastic fixator is arranged at one end of the maintainer body, a screw-in screw ring is arranged at the other end of the maintainer body, and a screw-in device is screwed on the outer wall of the screw-in screw ring. The opening of the arthroscope is complete, an instrument with a large size can conveniently enter an articular cavity, meanwhile, other skin wounds of the arthroscope can be prevented from being opened, the wound surface of the arthroscope operation is further reduced, and postoperative healing is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an arthroscopic surgical field maintainer. Background Art

[0002] Articular cartilage is a type of tissue without blood vessels, nerves or lymph nodes, and it is difficult to repair itself after injury. Knee cartilage injury is a common and difficult-to-treat joint injury in athletes and the general population. An epidemiological survey showed that cartilage injury accounted for as high as 63% of knee arthroscopy. Severe cartilage injury affects joint function and even causes athletes to lose their sports life. The treatment of cartilage injury has troubled doctors and patients for more than 200 years, and it is still a key topic and major challenge in the field of orthopedics and sports medicine. In the past few decades, people have been committed to studying methods for repairing and reconstructing cartilage injuries. These methods include bone marrow stimulation technology (microfracture technology MF), autologous osteochondral transplantation (OATS), allogeneic osteochondral transplantation (OCA), autologous chondrocyte transplantation technology (ACI), matrix-induced autologous chondrocyte transplantation (MACI), tissue engineering and stem cell cartilage repair technology, etc.

[0003] Articular cartilage injury repair surgery is generally performed under arthroscopy, but the general arthroscopic entrance does not have a maintainer. After the joint exploration device leaves the joint cavity, the entrance will be closed, resulting in the inability to maintain the surgical field, and the entry channels of other instruments are blocked, resulting in difficulty in observation. Therefore, special tools are needed to maintain the surgical field for easy operation. For this reason, the utility model proposes an arthroscopic surgical field maintainer to maintain the smooth entrance channel of the arthroscopic. Utility Model Content

[0004] The utility model aims to solve the deficiencies in the prior art and provide an arthroscopic surgical field maintainer to solve the problems of being unable to maintain the surgical field, making observation difficult and inconvenient to perform surgery during articular cartilage injury repair surgery.

[0005] To solve the above problems, the utility model proposes an arthroscopic surgical field maintainer, including a maintainer body, one end of the maintainer body is provided with a resilient fixer, the other end is provided with a screw-in screw ring, and the outer wall of the screw-in screw ring is screwed with a screw-in device.

[0006] By adopting the above technical solution, the arthroscopic surgical field can be maintained and the arthroscopic opening can be kept intact.

[0007] As a further description of the above technical solution, the retainer body is a hollow pipe.

[0008] By adopting the above technical solution, it can be used in conjunction with an arthroscope to facilitate the entry of instruments into the joint cavity.

[0009] As a further improvement of the above technical solution, the elastic fasteners are provided with at least two pairs and are symmetrically arranged on the outer wall of the retainer body. The elastic fasteners are tapered with the outer diameter gradually increasing from one end of the retainer body to the other end.

[0010] By adopting the above technical solution, when the maintainer is placed in the wound, the elastic fixator will be closed due to pressure, allowing the maintainer to smoothly enter the joint cavity.

[0011] As a further improvement of the above technical solution, an elastic member is provided between the elastic fixer and the retainer body, the elastic member is embedded in the tube wall of the retainer body, and the thickness of the elastic fixer is smaller than the thickness of the tube wall of the retainer body.

[0012] By adopting the above technical solution, the elastic member can be provided to realize the pop-up and retraction of the elastic fixer without affecting the patency of the internal pipeline of the retainer body.

[0013] As a further improvement of the above technical solution, the material of the retainer can be selected from 316L stainless steel, ABS engineering plastics, polypropylene, polyethylene and other materials.

[0014] By adopting the above technical solution, stimulation to the wound surface and synovial fluid can be avoided.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the arthroscopic surgical field can be maintained by the maintainer body, so that the arthroscopic opening is complete, and it is convenient for larger instruments to enter the joint cavity.

[0017] 2. In the utility model, opening of other arthroscopic skin wounds can be avoided, further reducing the wound surface of arthroscopic surgery and facilitating postoperative healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This utility model Figure 1 A-A' direction cross-sectional view;

[0021] Figure 3 This is a schematic diagram of the interior of the spring of the utility model in a compressed state;

[0022] Figure 4 It is a front view of the utility model.

[0023] Among them, 100-maintainer, 1-maintainer body, 2-elastic fixer, 3-screw-in screw ring, 4-screw-in device, 5-elastic member. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention are further described in detail below in combination with the accompanying drawings. However, the following embodiments are only used to help understand the implementation of the present invention and cannot be understood as further limiting the present invention.

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

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

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Embodiment 1

[0031] Figure 1-4 As shown, an arthroscopic surgical field maintainer includes a maintainer body 1, wherein the maintainer body 1 is a hollow tube, wherein one end of the maintainer body 1 is provided with an elastic fixer 2, and the other end is provided with a screw-in screw ring 3, wherein the outer wall of the screw-in screw ring 3 is screwed with a screw-in device 4, wherein the elastic fixer 2 is in a cone shape with an outer diameter gradually increasing from one end of the maintainer body 1 to the other end, wherein two pairs of the elastic fixers 2 are provided and symmetrically arranged on the outer wall of the maintainer body 1, wherein a spring 5 is provided between the elastic fixer 2 and the maintainer body 1, wherein the spring 5 is embedded in the tube wall of the maintainer body 1, and wherein the thickness of the elastic fixer 2 is less than the thickness of the tube wall of the maintainer body 1.

[0032] The material of the maintainer can be selected from 316L stainless steel, ABS engineering plastics, polypropylene, polyethylene and other materials that will not irritate the wound surface and synovial fluid.

[0033] Working principle: When using, select a surgical field maintainer 100 of appropriate size according to the size of the wound area, and place it in the opened wound. When the maintainer 100 is placed in the wound, its elastic fixer 2 will close due to pressure, allowing the maintainer 100 to smoothly enter the joint cavity. After the maintainer 100 enters the joint cavity to an appropriate depth, the elastic fixer 2 will pop out and fix. At this time, tighten the screw-in device 4 clockwise to fix the maintainer and the arthroscope. The maintainer 100 is firmly fixed to the wound surface to maintain a stable and clear surgical field. The arthroscopic probe and other surgical instruments can easily enter and exit the joint cavity through the space in the middle of the maintainer.

[0034] After the maintainer 100 is used, the screw-in device 4 is rotated in the opposite direction to separate it from the wound surface, and then slowly withdrawn from the wound surface to complete the operation.

Claims

1. An arthroscopic surgical field maintainer, characterized in that: The invention comprises a retainer body (1), wherein one end of the retainer body (1) is provided with a resilient fixer (2), and the other end is provided with a screw-in screw ring (3), and the outer wall of the screw-in screw ring (3) is screwed with a screw-in device (4).

2. The arthroscopic surgical field maintainer according to claim 1, characterized in that: The retainer body (1) is a hollow pipe.

3. The arthroscopic surgical field maintainer according to claim 1, characterized in that: The elastic fixing devices (2) are provided in at least two pairs and are symmetrically arranged on the outer wall of the retainer body (1).

4. The arthroscopic surgical field maintainer according to claim 3, characterized in that: The elastic fixing device (2) is in a conical shape, the outer diameter of which gradually increases from one end of the retainer body (1) to the other end.

5. The arthroscopic surgical field maintainer according to claim 4, characterized in that: An elastic member (5) is provided between the elastic fixer (2) and the retainer body (1), and the elastic member (5) is embedded in the tube wall of the retainer body (1).

6. The arthroscopic surgical field maintainer according to claim 5, characterized in that: The thickness of the elastic fixer (2) is smaller than the thickness of the tube wall of the retainer body (1).

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