Biodegradable metal material definition
Biodegradable metal medical material refers to a kind of metal material in which metal implants gradually corrode in the process of assisting and completing biological tissue repair until completely dissolved, and the corrosion products of the material do not produce or produce slight to the organism. Host reaction. Therefore, the main constituent element of the biodegradable metal material should be a basic metal element which can be excreted by the organism through metabolism, and has a certain corrosion rate in the living body.
Biodegradable metal materials mainly include pure magnesium and magnesium-based alloys, pure iron and iron-based alloys, pure zinc and zinc-based alloys, tungsten and (calcium-based, zinc-based and bismuth-based) bulk amorphous alloys.