A kind of biodegradable mg-ca-mn-sn magnesium alloy material and its preparation method and application

Abstract

The invention discloses a biodegradable Mg-Ca-Mn-Sn magnesium alloy material and a preparation method and application thereof. The biodegradable Mg-Ca-Mn-Sn magnesium alloy material is prepared from the following components, by mass percentage, 0.5-3% of Ca, 0.1-2% of Mn, 1-5% of Sn and the balance Mg and inevitable impurity elements brought in by raw materials. The specific preparation method includes smelting of the raw materials, casting molding, uniform annealing treatment and hot extrusion processing. The biodegradable Mg-Ca-Mn-Sn magnesium alloy has no any toxicity on human bodies and is good in mechanical performance, the preparation method is simple and low in cost, plate-shaped and rod-shaped materials in different size and cross section requirements can be prepared as required, and the biodegradable Mg-Ca-Mn-Sn magnesium alloy material can be used for preparation of bone lamellae, bone nails and other orthopedic implants, cardiovascular stents and other medical materials.

Description

technical field

[0001] The invention belongs to the technical field of medical implant materials, and relates to a biodegradable Mg-Ca-Mn-Sn magnesium alloy material and a preparation method and application thereof. Background technique

[0002] At present, the traditional medical metal materials commonly used clinically mainly include medical stainless steel, medical titanium alloy, and medical cobalt alloy. The release of toxic elements; the modulus of elasticity of traditional medical metal materials is higher than that of human bones; a secondary operation is required to remove it.

[0003] Magnesium alloys as medical metal materials can be traced back more than 100 years ago. However, due to the poor corrosion resistance of magnesium alloys, the degradation rate in the human body is too fast to meet the performance requirements of medical implants, thus limiting the use of magnesium alloys as medical implants. Wide application of implants. But early clinical applicati...