An orthopedic implant with a polymer-wrapped metal prosthesis

Abstract

An orthopedic implant with a polymer-wrapped metal prosthesis, comprising a metal implant body and a high-molecular layer wrapping the surface of the implant. The orthopedic implant is formed by wrapping the surface of a metal implant body material with an anti-corrosion organic high-molecular material, such that a metal implant is prevented from being corroded by human body liquid. An organic high-molecular material wraps between two metal implants in contact with each other, so that contact between metal and metal is prevented, thereby inhibiting electrochemical reactions caused by the contact between metal and metal, and further reducing adverse reactions on a human body caused by dissolution of metal ions. Meanwhile, the existence of a high-molecular interface aids in enhancement of locking between metal implants, prevents and reduces slight movement, and accelerates operation healing.

Description

technical field [0001] The invention relates to a medical rehabilitation device, in particular to an orthopedic implant in which a metal prosthesis is wrapped with a polymer. Background technique [0002] Metallic materials are one of the most commonly used materials for orthopedic implants. Metal materials have the advantages of high strength and good toughness that ceramics and polymer materials do not have, so they are widely used in structural components of orthopedic implants that require high strength, such as bone plates, intramedullary nails, bone screws, joints, etc. Stem, femoral condyle, etc. The most commonly used metal materials are titanium and titanium alloys, CoCrMo alloys, stainless steel, etc. (Pezzotti G, Yamamoto K. Artificial hip joints: The biomaterial challenge. J Mech Behav Biomed Mater. 2014 Mar; 31:3-20). However, metal materials will corrode to varying degrees when in contact with human body fluids, and the corrosive products include metal ions, ...

AI Technical Summary

Problems solved by technology

However, metal materials will corrode to varying degrees when in contact with human body fluids, and the corrosive products include metal ions, which will cause adverse reactions to the human body. Therefore, reducing or preventing corrosion of metal orthopedic implants is its application A basic requirement (Matusiewicz H, Potential release of in vivo trace metals from metallic medical implants in the human body: from ions to nanoparticles--a systematic analytical review, Acta Biomater. 2014 Jun; 10(6):2379-403)

Images