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An orthopedic implant with a polymer-wrapped metal prosthesis

A technology of internal implants and polymers, applied in the direction of joint implants, joint implants, prostheses, etc., can solve problems such as adverse reactions in the human body, achieve inhibition of electrochemical reactions, prevent corrosion, and reduce adverse reactions Effect

Active Publication Date: 2018-10-19
SUZHOU SINOMED BIOMATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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)

Method used

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  • An orthopedic implant with a polymer-wrapped metal prosthesis
  • An orthopedic implant with a polymer-wrapped metal prosthesis
  • An orthopedic implant with a polymer-wrapped metal prosthesis

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The orthopedic implants of the present invention with polymer-wrapped metal prosthesis include but are not limited to implants for fixing and protecting the human body, such as bone plates, bone screws, intramedullary nails, interlocking screws, spinal screws, elastic Rods, etc.; artificial joints and some of their components, such as hip stems, acetabular cups, femoral condyles of the knee, and tibial plateaus of the knee, etc.

[0027] The material of the implant body of the polymer-wrapped metal prosthesis of the present invention is a medical metal material, including but not limited to ...

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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, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/68A61L31/10A61L31/02A61L27/34A61L27/06A61L27/04A61L27/02A61B17/80A61B17/86A61B17/72A61B17/70A61F2/32A61F2/38
CPCA61B17/70A61B17/72A61B17/80A61B17/86A61F2/32A61F2/38A61L27/02A61L27/04A61L27/06A61L27/34A61L31/02A61L31/10
Inventor 朱健徐龙伟
Owner SUZHOU SINOMED BIOMATERIALS CO LTD
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