Medical degradable magnesium alloy material with iron ion membrane sputtered on surface and preparation process

Abstract

The invention provides a medical degradable magnesium alloy material with an iron ion membrane sputtered on the surface. The medical degradable magnesium alloy material is made of pure magnesium and a magnesium alloy; a bone nail, a bone plate or a bone scaffold is obtained through manners such as pressure casting, forging or machining; and an iron ion membrane layer is sputtered on the surface of the material through a magnetron sputtering machine. The invention further provides a preparation process of the medical degradable magnesium alloy material with the iron ion membrane sputtered on the surface, and the uniform iron ion membrane is sputtered on the surface of the bone nail, the bone plate or the bone scaffold which is made of pure magnesium and the magnesium alloy with a low-temperature magnetron sputtering method, so that the degradation speed of the degradable magnesium alloy material can be effectively slowed down, the material can be completely degraded within the required healing time of bone tissues of a human body, and the purpose of manual control of the degradation speed of the medical degradable magnesium alloy material is achieved.

Description

technical field [0001] The invention belongs to the technical field of biomedical materials, and relates to a treatment technology for a medical degradable magnesium alloy bone support material, in particular to a medical degradable magnesium alloy material with a surface sputtered iron ion film and a preparation process. Background technique [0002] In the recovery and treatment of tissue structure in the field of modern medical technology, with the research and progress of medical degradable magnesium alloy bone nails, bone plates and bone scaffold materials, this new medical biodegradable magnesium alloy material is gradually used in clinical practice. Controlled drug release, fracture fixation devices, bone defect repair, and biological human organ reconstruction. Since this bone tissue material made of magnesium alloy has good biomechanical properties, biocompatibility and in vivo degradability, after implanted in the human body as a medical degradable material, its de...

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Problems solved by technology

Since this bone tissue material made of magnesium alloy has good biomechanical properties, biocompatibility and in vivo degradability, after implanted in the human body as a medical degradable material, its degradation rate is relatively fast, in order to control For the degradation rate of magnesium alloy materials, micro-arc oxidation is usually used to form a protective film on the surface of medical degradable magnesium alloy materials. To limit the degradation speed of medical degradable magnesium alloy, but the protective film formed on the surface of medical degradable magnesium alloy material by micro-arc oxidation treatment makes the degradation effect of medical degradable magnesium alloy material too long, and the degradation speed is very slow , can not meet the requirements of complete degradation within a reasonable healing time required by human bone tissue, which has played a certain negative role