A kind of preparation method of medical prosthesis

Abstract

The invention discloses a manufacturing method for a medical artificial limb. The medical artificial limb comprises alloy materials including 2% of Nb, 2%-3% of Cu, 9% of Fe, 3%-4% of Mo, 1%-2% of Mn, 3.5% of Zr, 2.5%-3.5% of Cr, 1.5%-2.5% of Ca, less than 0.1% of C and the balance Ti; and the medical artificial limb is manufactured through the steps of smelting, wax mold manufacturing and combining, mold shell manufacturing, a pouring, heat treatment and refining. The strength of the artificial limb manufactured with the method is far larger than that made of medical pure titanium materials, the artificial limb is friendly to the internal environment of the human body and low in density, and has the good smelting and sintering machining performance; the mechanical property is close to that of the bone of the human body; and the fatigue resistance and the decay resistance are good.

Description

technical field [0001] The invention belongs to the medical and health field, and in particular relates to a preparation method of a medical artificial limb. Background technique [0002] With the development of modern medicine and materials science, medical prosthetics, artificial joints, bone fixators, dental implants, heart valve covers, etc. are used to manufacture medical devices, prostheses or artificial organs and auxiliary treatment equipment implanted in the human body. The application in the medical and health field is becoming more and more extensive, and the materials of the above-mentioned components have made great progress in terms of biocompatibility, strength, plasticity, and corrosion resistance. The medical alloys widely used in the medical field include Ni-Cr series, Co series, Ti series, etc. Among them, the Ti-6Al-4V alloy of the Ti series is the most widely used medical alloy, but in recent years it has been found that Ti-6Al -4V alloy will precipitat...

AI Technical Summary

Problems solved by technology

The medical alloys widely used in the medical field include Ni-Cr series, Co series, Ti series, etc. Among them, the Ti-6Al-4V alloy of the Ti series is the most widely used medical alloy, but in recent years it has been found that Ti-6Al -4V alloy will precipitate a very small amount of vanadium and aluminum ions during use, and the precipitated vanadium ions are toxic and will cause adverse tissue reactions. Aluminum ions will cause human nervous disorders, reduce cell adaptability and other defects that are harmful to the human body. At present, the main solution is to prevent the precipitation of toxic element ions such as vanadium and aluminum to a certain extent through surface coating and other treatment technologies, but the main problems of this method are: increasing the complexity of the processing procedure, increasing the cost, and There will still be some toxic elements of vanadium and aluminum precipitated, and the reliability cannot be guaranteed