Biodegradable magnesium alloy blood vessel rack
A magnesium alloy blood vessel and biodegradation technology, applied in stents, medical science, prostheses, etc., can solve problems such as acute or chronic inflammatory reactions, uncertain plastic deformation points of polymers, and disordered growth of vascular endothelial cells. Achieving excellent mechanical properties, good biocompatibility, and grain refinement
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[0020] Example 1:
[0021] A biodegradable magnesium alloy vascular stent, its weight percentage composition is: zinc 5%-8%; calcium 0.5-5%; zirconium 1%-3%; neodymium 1%-3%; niobium 0-3%, The rest is magnesium. Its physical and chemical properties, especially its degradability can be adjusted by adding other metal elements with good biocompatibility; especially its degradability can be adjusted by adding other rare earth elements with good biocompatibility ; Its biocompatibility can be adjusted by adding other metal elements with good biocompatibility and rare earth elements; its processability can be adjusted by adding other metal elements with good biocompatibility.
Example Embodiment
[0022] Example 2:
[0023] A biodegradable magnesium alloy vascular stent is composed of 7% by weight of zinc; 0.5% of calcium; 1% of zirconium; 1% of neodymium; and the rest is magnesium. After further processing the shaped material, the physical properties of the material are measured as follows: tensile strength is 220Mpa; elastic modulus is 20Gpa; elongation at break is 8%; in vitro degradation half-life is 8 weeks.
Example Embodiment
[0024] Example 3:
[0025] A biodegradable magnesium alloy vascular stent is composed of 5% zinc; 2% calcium; 3% zirconium; 3% neodymium; 3% niobium, and the rest is magnesium. After further processing the shaped material, the physical properties of the material are measured as follows: the tensile strength is 270Mpa; the elastic modulus is 35Gpa; the elongation at break is 5%; the in vitro degradation half-life is 12 weeks.
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