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Combined three-action total hip prosthesis

A combination type and prosthesis technology, applied in the direction of prosthesis, hip joint, acetabular socket, etc., can solve the problem that the hip joint prosthesis cannot achieve anteversion angle, cannot achieve a large range of motion, and the patient's joint range of motion is not ideal, etc. problem, to avoid dislocation, enhance the range of motion, and restore the effect of bionic movement

Inactive Publication Date: 2020-11-03
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a combined three-movement total hip prosthesis to solve the problem that the existing hip joint prosthesis cannot achieve an anteversion angle close to the anatomical structure and cannot achieve a large range of motion, resulting in postoperative patients Unsatisfactory joint range of motion

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  • Combined three-action total hip prosthesis

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Embodiment Construction

[0041] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0042] Such as Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a combined three-movement total hip prosthesis, including femoral stem 1, bushing 2, femoral neck 3, ceramic ball head 4, acetabular lining 5 and acetabular cup 6 connected in sequence The inside of the hemispherical acetabular cup 6 is provided with a hemispherical acetabular lining 5, and the inner spherical surface of the acetabular cup 6 and the outer spherical surface of the acetabular lining 5 form the first joint activity surface; the inner spherical surface of the acetabular lining 5 and the ceramic The outer spherical surface of the ball head 4 forms the second articulation surface. The ceramic ball head 4 is provided with a tapered inner cavity, the...

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Abstract

The invention provides a combined three-action full-hip prosthesis. The combined three-action full-hip prosthesis comprises a hemispherical acetabular cup, wherein a hemispherical acetabular lining isarranged on the inner side of the acetabular cup, and is movably connected with the acetabular cup, a ceramic ball head is arranged on the inner side of the acetabular lining, the ceramic ball head is movably connected with the acetabular lining, and a conical inner cavity is formed in the ceramic ball head. The first end of the femoral neck is inserted into an inner cavity of the ceramic ball head, the second end of the femoral neck is connected with the femoral stem, a connecting ball is arranged at the second end of the femoral neck, a groove is formed in the end of the femoral stem, a bushing matched with the connecting ball is arranged in the groove, the connecting ball is arranged in the bushing, and positioning protrusions are arranged on the end surface of the second end of the femoral neck. A plurality of positioning holes cooperating with the positioning protrusions are formed in the end surface of the femoral stem. According to the combined three-action total hip prosthesisin the scheme, through three joint movement surfaces, postoperative bionic movement of a patient is recovered to the maximum extent, the 170-degree movement range can be achieved, and the dislocationphenomenon caused by excessive movement is avoided to a great extent.

Description

technical field [0001] The invention belongs to the field of artificial joint medical devices, in particular to a combined three-movement total hip prosthesis. Background technique [0002] In recent years, with the continuous improvement of my country's medical device technology, especially in the field of orthopedics, artificial joint replacement surgery has become an effective method commonly used in the medical field to treat joint disabling diseases, and the prosthesis implanted after surgery The fixation effect with the natural bone of the human body is the key to determine the service life and curative effect of the artificial joint. [0003] The hip joint is a powerful joint in the human body, and its movement can be divided into flexion-extension, abduction-adduction, and internal rotation-external rotation. Among them, the range of motion of the joint is the largest in the flexion and adduction positions. Most of the hip joint prostheses currently on the market are...

Claims

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Application Information

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IPC IPC(8): A61F2/34A61F2/36
CPCA61F2/34A61F2/3607A61F2/3609A61F2/3662A61F2002/3006A61F2002/3233A61F2002/3611A61F2002/3625
Inventor 张晓攀
Owner BEIJING LIDAKANG TECH
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