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Artificial joint femoral stem

A technology of artificial joints and femoral stems, applied in medical science, prostheses, coatings, etc., can solve problems such as poor matching, poor bone tissue fusion, artificial joint failure, etc., and achieve the effect of preventing loosening and increasing fusion

Inactive Publication Date: 2015-09-02
ZHONGAO HUICHENG TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0004] The loosening problem of artificial joints is mainly caused by aseptic loosening caused by metal, ceramic, polymer and other debris caused by wear between the joint interface, which makes the matching between the joint head and the acetabular cup interface worse, which in turn leads to the failure of the artificial joint, and the debris Usually cause biological reactions in the human body, such as inflammation or rejection, etc., causing harm to the human body
In order to solve the loosening problem of artificial joints, at present, artificial joints are often surface treated, such as titanium beads sintering, titanium wire sintering or spraying titanium alloy powder, bioceramic powder, hydroxyapatite (HA) coating on the surface of artificial joints. etc. However, although these surface treatments can alleviate the loosening problem, they have poor fusion with human bone tissue and have stability problems

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do without departing from the connotation of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0024] refer to figure 1 As shown, the artificial hip joint mainly includes an acetabular outer cup 1, an acetabular inner lining 2, a femoral ball head 3 and a joint femoral stem 4, and the acetabular inner lining 2 is matched with the inner wall of the acetabular outer cup 1 and the femoral ball head 3. Bet...

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Abstract

The invention discloses an artificial joint femoral stem which comprises a joint femoral stem body and at least one titanium alloy layer on the partial outer surface of the end part, close to a femoral ball head, of the joint femoral stem body, wherein the titanium alloy layer adopts a sponge hole structure; walls of holes in the sponge hole structure are made of titanium alloy materials; the holes are distributed in an irregular three-dimensional net-shaped manner in the thickness direction so as to form communicated hole channels. Integration of the artificial joint femoral stem and human body bone tissue is increased, so that looseness between the artificial joint femoral stem and the bone is effectively prevented.

Description

technical field [0001] The invention relates to the field of biomedical materials, in particular to an artificial joint femoral stem. Background technique [0002] Artificial hip replacement is currently the most effective method for the treatment of diseases in the field of bone and joints, and it has enabled many patients with severe bone and joint diseases to recover. [0003] In the clinical application of artificial hip joints, there are still many problems that need to be continuously explored. Among them, the stability of the acetabular cup and the femoral stem of the joint, and the loosening of the artificial joint are two fatal problems. [0004] The loosening problem of artificial joints is mainly caused by aseptic loosening caused by metal, ceramic, polymer and other debris caused by wear between the joint interface, which makes the matching between the joint head and the acetabular cup interface worse, which in turn leads to the failure of the artificial joint, a...

Claims

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Application Information

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IPC IPC(8): A61L27/30A61L27/56
Inventor 李玲玲李非凡金攻涂江平
Owner ZHONGAO HUICHENG TECH CO LTD
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