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Artificial hip joint bone fusion femoral stem

A technology of hip joint and bone fusion, applied in the direction of hip joint, femoral head, joint implants, etc., can solve the problems of handle failure and other problems, and achieve the effect of preventing loosening and good biocompatibility

Inactive Publication Date: 2010-05-19
BEIJING AKEC MEDICAL
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] Artificial hip replacement surgery has become a relatively common surgical operation in the medical field, but how to maintain the stability of the femoral stem as a femoral implant in the femoral medullary cavity is still a topic that has been continuously explored in various aspects. In recent years With the advancement of industrial technology, new types of handles continue to appear, such as high-temperature spraying of alloy powder on the surface of the handle, high-temperature spraying of bioceramic powder, sintering of metal microbeads, machining of grooves, concave-convex rough surfaces, etc., the main The purpose is to increase the contact area and friction between the femoral stem and the bone to delay the loosening of the stem. However, the degenerative atrophy of bone cells caused by osteolysin caused by the long-term wear and tear of the articular surface is still inevitable. The detachment and loosening of the interfacial gap between the femoral stem and the bone may still lead to the eventual failure of the stem implant

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  • Artificial hip joint bone fusion femoral stem
  • Artificial hip joint bone fusion femoral stem
  • Artificial hip joint bone fusion femoral stem

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Embodiment Construction

[0017] The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 As shown, the femoral stem with three-dimensional mesh structure is divided into head (1), neck (2), and stem body (3). The position is referred to as the distal end. Due to the difference in the quality of the patient's bone and the needs of biomechanics, the femoral handle (3) of the artificial hip joint bone fusion of the present invention can be partially or entirely composed of a three-dimensional mesh structure (4), in order to To achieve the best combination of bone and handle, such as Figure 7 , Figure 8 The three-dimensional mesh structure shown can be single-layer (6) or multi-layer (7), and there is no specific requirement for the cross-sectional shape of the mesh, such as Image 6 The hole (5) that can be left at the appropriate ...

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Abstract

The invention relates to an artificial hip joint bone fusion femoral stem. The femoral stem comprises a head part, a neck part and a stem body, wherein the whole or partial stem body is formed by three-dimensional mesh structure, all mesh units are mutually communicated, holes are arranged in the proper places of the stem body and used to be filled with autograft or allograft crushed bone particles; and after the femoral stem is implanted through the surgical operation, the external bone tissue permeates and grows in the three-dimensional mesh and grows together with the crushed bone particles filled in the holes of the stem body, thus reaching the aim of effectively preventing the loose between the artificial hip joint bone fusion femoral stem prosthesis and the sclerotin for long time.

Description

technical field [0001] The invention relates to an artificial hip joint bone fusion femoral stem. Background technique [0002] Artificial hip replacement surgery has become a relatively common surgical operation in the medical field, but how to maintain the stability of the femoral stem as a femoral implant in the femoral medullary cavity is still a topic that has been continuously explored in various aspects. In recent years With the advancement of industrial technology, new types of handles continue to appear, such as high-temperature spraying of alloy powder on the surface of the handle, high-temperature spraying of bioceramic powder, sintering of metal microbeads, machining of grooves, concave-convex rough surfaces, etc., the main The purpose is to increase the contact area and friction between the femoral stem and the bone to delay the loosening of the stem. However, the degenerative atrophy of bone cells caused by osteolysin caused by the long-term wear and tear of th...

Claims

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Application Information

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IPC IPC(8): A61F2/32A61L27/10A61L27/04A61L27/32
CPCA61F2/36A61F2002/30001
Inventor 张卫平
Owner BEIJING AKEC MEDICAL
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