Manufacturing method for medical bone fixing device

Abstract

The invention discloses a manufacturing method for a medical bone fixing device. The medical bone fixing device comprises, 4%-6% of Nb, 2%-3% of Cu, 6.5%-7.5% of Fe, 3%-4% of Mo, 1%-2% of Mn, 5%-7% of Zr, 0.6%-0.7% of Ge, 2.5%-3.5% of Cr, 1.5%-2.5% of Ca, 0.15%-0.25% of Mg, less than 0.1% of C and the balance Ti. After element powder or alloy powder of all elements with appropriate granularities are selected and mixed, injection molding sintering is carried out, and the bone fixing device is obtained; the strength of the bone fixing device is far larger than that of a medical pure titanium material, the bone fixing device is friendly to the environment of the kinterior of the human body, the density is low, the bone fixing device has the good smelting and sintering machining performance, the mechanical property is similar to that of human bone, 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 bone fixation device. 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 preci...

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