Iron based and absorbable implanted medical device and prefabricated tube and preparation method therefor
AssigneeLifetech Scientific (Shenzhen) Co., Ltd.
InventorsXianmiao Chen, Wenjiao Lin, Xiangdong Liu, Deyuan Zhang
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Abstract
An iron based and absorbable implanted prefabricated tube (1) for medical device and preparation method therefor, and a medical device prepared by the prefabricated tube and preparation method therefor. The average nitrogen content of nitrogen in the prefabricated tube is from 0.04-0.4 wt. % or 0.02-0.04 wt. %. The prefabricated tube can be cut along the length direction directly by laser or by machining to obtain multiple absorbable implanted medical devices.
Claims24
A method of preparing a prefabricated tube for an iron-based absorbable implanted medical device, comprising:
- providing an iron-based blank;
- and
- nitriding the iron-based blank up to an average nitrogen content of from 0.04 to 0.4 wt. % or from 0.02 to 0.04 wt. % to form a prefabricated tube.
A method of preparing an iron-based absorbable implanted medical device, comprising:
- providing an iron-based blank;
- nitriding the iron-based blank up to an average nitrogen content of from 0.04 to 0.4 wt. % or from 0.02 to 0.04 wt. % to form a prefabricated tube;
- and
- molding-processing the prefabricated tube along the length direction into a plurality of iron-based absorbable implanted medical devices.
Dependencies are inferred from the claim text.