Artificial partial hip joint prosthesis made of organic polymer material

Abstract

An artificial partial hip joint prosthesis made of organic polymer material comprises a first ball head, a second ball head and a thigh-bone handle, wherein the first ball head is inward concave; the second ball head is arranged inside the first ball head and connected with the thigh-bone handle; and the first ball head is made of polyether-ether-ketone or other derivatives of the polyether-ether-ketone, during the use, the first ball head is placed inside a human body acetabular fossa, the outer surface of the first ball head is matched with a human body artificial cartilage, the inner surface of the first ball head is matched with the second ball head, and double sliding connections are formed between the outer surface of the first ball head and the human body artificial cartilage, as well as between the inner surface of the first ball head and the second ball head through sliding and matching. The inner implant component of the prosthesis provided by the invention is made of a polymer material, and the problems of irritability and toxicity caused by metallic corrosion and metal possibly are reduced; the elastic modulus of a PEEK material of the prosthesis provided by the invention is matched with a natural bone, so that the problem of stressed shielding is reduced; according to the prosthesis provided by the invention, abrasion to the sliding friction surface of the artificial cartilage is lowered; all inner implant components in the prosthesis cannot cause interferences to nuclear magnetic resonance imaging.

Description

technical field [0001] The invention relates to a medical rehabilitation device, and more specifically, relates to an organic polymer material artificial half hip joint prosthesis. Background technique [0002] Artificial hemiarthroplasty has been widely used since it was applied clinically in the 1940s, especially in hip joints (Abram SG and Murray JB, Outcomes of 807 Thompson hipemiarthroplasty procedures and the effect of surgical approach dislocation rates. Injury. 2015 Jan7.pii: S0020-1383(14) 00663-9.doi :10.1016 / j.injury.2014.12.016.). In other joints, such as the shoulder joint (JonesRB. Hemiarthroplastyforproximalhumeralfractures.Indications, pitfalls, and technique.BullHospJtDis(2013).2013; 71Suppl2:60-3.Review.PMID:24328583 [PubMed-indexedforMEDLINE]) and patellofemoral joint also have similar single Application in arthroplasty of the face. The material of the implant basically consists of a unipolar structure of cobalt chromium molybdenum (CoCrMo) alloy or a bi...

AI Technical Summary

Problems solved by technology

[0004] Therefore, so far, clinically applied hemi-hip prostheses are basically all metal materials, especially CoCrMo alloys, but the above-mentioned metal materials have hindered a wide range of clinical applications due to a series of shortcomings.

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