Patent ID: 11969368
Assignee: BIOTYX MEDICAL (SHENZHEN) CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC A  C  B | IPC A  B  C

Claim 8:
9. A lumen stent preform, characterized in that the lumen stent preform is pure iron or an iron alloy, a total impurity element content of the pure iron is less than or equal to 0.5 wt. %, a total alloy element content of the iron alloy is less than or equal to 3 wt. %, and the iron alloy contains no strong nitride-forming element, the lumen stent preform has a hardness of 160-250HV0.05/10, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9.