A new variable head acetabular retractor

Abstract

The utility model provides a novel variable head acetabulum drag hook, including handle, one end fixedly connected with drag hook part of handle, be equipped with mounting hole on drag hook part, fixed mounting has installation shaft in mounting hole, rotate the installation head of installation shaft, drag hook is fixedly installed in installation head bottom, drag hook appearance is massive, drag hook bottom is provided as cambered surface, be equipped with antiskid line on cambered surface. The utility model discloses drag hook is set to the massive double -deck structure, avoid damaging bone quality, and the outer layer of drag hook is made of medical grade plastic, and the bottom surface of outer layer is the cambered surface that is provided with antiskid line, and the bone is fitted, can prevent drag hook to slip, and drag hook is rotatably connected through installation head and installation shaft, so that drag hook can rotate, and the angle is adjusted, and a large number of different angle instruments need not to be prepared.

Description

Technical Field

[0001] This utility model relates to the field of acetabular retractor technology, specifically to a novel variable-head acetabular retractor. Background Technology

[0002] Currently, acetabular retractors are widely used in hip and knee replacement surgery to pry open the soft tissues around the bone. Depending on the application requirements, acetabular retractors are usually made of high-hardness stainless steel, with different angle combinations for the pointed tip and the large bend in the middle, as well as different sizes for the "ears" at the front, to adapt to different intraoperative needs.

[0003] Existing acetabular retractors have some drawbacks: Firstly, due to differences in surgical sites, patient bone size, soft tissue thickness, etc., multiple types of acetabular retractors are often required to complete the surgery. This necessitates the preparation of a large number of different types of acetabular retractors before surgery, which is complex, costly, and requires the use of instruments during the operation, thus delaying the operation time. Secondly, elderly patients often have osteoporosis. The pointed tip of the acetabular retractor is relatively sharp and made of hard material. When the tip is bent, it can easily puncture the bone, causing bone defects or fractures during surgery, affecting the surgical outcome or increasing new surgical complications. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a novel variable-head acetabular retractor in response to the shortcomings of the prior art. This acetabular retractor has a simple structure, variable angle of use, and is easy to use. It can effectively avoid damage to bone and does not require the preparation of a large number of different models of acetabular retractors, so it can be widely used.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel variable-head acetabular retractor, characterized in that it includes a handle, one end of which is fixedly connected to a retractor portion, the retractor portion having an installation hole, an installation shaft being fixedly installed in the installation hole, an installation head being rotatably mounted on the installation shaft, and a retractor being fixedly installed at the bottom end of the installation head, the retractor being block-shaped, the bottom end of the retractor being set as an arc surface to conform to the bone, increase the force-bearing area, reduce pressure, and avoid accidents such as perforation of the bone cortex during surgery, the arc surface being provided with anti-slip texture to increase friction and prevent slippage.

[0006] Preferably, the mounting head is positioned within the mounting hole, and the rotation angle of the mounting head is 25°~35°. Rotating the mounting head allows the angle of the hook to be adjusted, eliminating the need to prepare a large number of instruments with different angles.

[0007] The distance between the bottom edge of the mounting head and the mounting shaft is greater than the distance between the mounting shaft and the edge of the mounting hole. When the mounting head rotates, it cannot rotate into the mounting hole, thus limiting the rotation angle of the mounting head.

[0008] Preferably, the other end of the handle has a round hole through which the acetabular hook can be suspended.

[0009] Preferably, the side of the handle away from the hook is curved to avoid damaging muscle tissue.

[0010] Preferably, a transition section is provided between the handle and the hook portion.

[0011] Preferably, the pull hook has a double-layer structure, with the inner layer connected to the mounting head and the outer layer having an arc surface. The outer layer of the pull hook is made of medical-grade plastic and can be repeatedly sterilized and reused, while the inner layer of the pull hook and the mounting head are made of stainless steel.

[0012] This utility model has the following advantages compared with the prior art: The pull hook in this invention is designed as a double-layered block to avoid damaging the bone. The outer layer of the pull hook is made of medical-grade plastic, and the bottom surface of the outer layer is an arc surface with anti-slip texture to conform to the bone and prevent the pull hook from slipping. The pull hook is rotatably connected to the mounting shaft through the mounting head, so that the pull hook can be rotated and the angle can be adjusted, eliminating the need to prepare a large number of instruments with different angles.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a side view of the present invention.

[0016] Figure 3 This is a schematic diagram of the hook in use in this utility model.

[0017] Figure 4 This is a schematic diagram of another angle state of the hook in this utility model.

[0018] Explanation of reference numerals in the attached figures: Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] like Figures 1-4 As shown, this utility model provides a novel variable-head acetabular retractor, including a handle 1. A retractor part 2 is fixedly connected to one end of the handle 1. An installation hole 3 is provided on the retractor part 2. An installation shaft 4 is fixedly installed in the installation hole 3. An installation head 5 is rotatably mounted on the installation shaft 4. A retractor 6 is fixedly installed at the bottom end of the installation head 5. The retractor 6 is block-shaped. The bottom end of the retractor 6 is set as an arc surface to conform to the bone, increase the force-bearing area, reduce pressure, and avoid accidents such as perforation of the bone cortex during surgery. The arc surface is provided with anti-slip texture to increase friction and prevent slippage.

[0022] In this embodiment, the mounting head 5 is positioned within the mounting hole 3, and the rotation angle of the mounting head 5 is 25°~35°, preferably 30°. By rotating the mounting head 5, the angle of the hook 6 can be adjusted, eliminating the need to prepare a large number of instruments with different angles.

[0023] The distance between the bottom edge of the mounting head 5 and the mounting shaft 4 is greater than the distance between the mounting shaft 4 and the edge of the mounting hole 3. When the mounting head 5 rotates, it cannot rotate into the mounting hole 3, thus limiting the rotation angle of the mounting head 5 by the mounting hole 3.

[0024] In this embodiment, the other end of the handle 1 is provided with a round hole 7, through which the acetabular hook can be suspended.

[0025] In this embodiment, the side of the handle 1 away from the hook portion 2 is curved to avoid damaging muscle tissue.

[0026] In this embodiment, a transition section is provided between the handle 1 and the hook portion 2.

[0027] In this embodiment, the hook 6 has a double-layer structure. The layer connected to the mounting head 5 is the inner layer, and the layer with the arc surface is the outer layer. The outer layer of the hook 6 is made of medical-grade plastic and can be repeatedly sterilized and used. The inner layer of the hook 6 and the mounting head 5 are made of stainless steel.

[0028] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A novel variable-head acetabular retractor, characterized in that, Includes a handle (1), one end of which is fixedly connected to a hook part (2), the hook part (2) is provided with an installation hole (3), an installation shaft (4) is fixedly installed in the installation hole (3), an installation head (5) is rotatably mounted on the installation shaft (4), and a hook (6) is fixedly installed at the bottom end of the installation head (5). The hook (6) is block-shaped, and the bottom end of the hook (6) is set as an arc surface, and anti-slip texture is provided on the arc surface.

2. A novel variable-head acetabular retractor according to claim 1, characterized in that, The mounting head (5) is positioned within the mounting hole (3), and the rotation angle of the mounting head (5) is 25°~35°.

3. A novel variable-head acetabular retractor according to claim 1, characterized in that, The other end of the handle (1) has a round hole (7).

4. A novel variable-head acetabular retractor according to claim 1, characterized in that, The handle (1) is curved on the side away from the hook (2).

5. A novel variable-head acetabular retractor according to claim 1, characterized in that, A transition section is provided between the handle (1) and the hook (2).

6. A novel variable-head acetabular retractor according to claim 1, characterized in that, The hook (6) has a double-layer structure. The outer layer of the hook (6) is made of medical-grade plastic, and the inner layer of the hook (6) and the mounting head (5) are made of stainless steel.

Images