Lumen Stent and Preform thereof, and Methods for Preparing the Lumen Stent and Preform thereof

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United States of America Patent

APP PUB NO 20240261119A1
SERIAL NO

18638543

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Abstract

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A lumen stent preform is provided using a plasma nitriding technology, a preparation method thereof, a method for preparing a lumen stent by using the preform, and a lumen stent obtained according to the method. The preform is manufactured by using pure iron or an iron alloy containing no strong nitrogen compound, has a hardness of 160-250 HV0.05/10, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. Alternatively, the preform is an iron alloy containing a strong nitrogen compound, and has a microstructure that is a deformed structure having a grain size scale greater than or equal to 9 or a deformed structure after cold machining. The lumen stent preform meets the requirements of a conventional stent for radial strength and plasticity, so that plasma nitriding is applicable to commercial preparation of a lumen stent.

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Patent Owner(s)

Patent OwnerAddress
BIOTYX MEDICAL (SHENZHEN) CO LTDSHENZHEN GUANGDONG 518000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Xianmiao Shenzhen, CN 14 52
Liu, Xiangdong Shenzhen, CN 50 467
Zhang, Deyuan Shenzhen, CN 50 245

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