The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2021
Filed:
Jun. 27, 2016
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Haiping Qi, Shenzhen, CN;
Wenjiao Lin, Shenzhen, CN;
Biotyx Medical (Shenzhen) Co. Ltd., Shenzhen, CN;
Abstract
An absorbable iron-based alloy medical device implant, comprising an iron-based alloy substrate () and a degradable polymer () provided on a surface of an iron-based alloy substrate (), and a zinc-containing protective member () provided on the surface of the iron-based alloy substrate (). The zinc-containing protective member () is either a zinc compound or a mixture comprising the zinc compound and at least one of a phosphate-containing compound, a degradable binder, or a water-soluble binder. The weight ratio of the zinc compound in the mixture is ≥20% and <100%. The zinc-containing protective member () can delay corrosion of the iron-based alloy substrate () during an early stage of medical device implantation. The iron-based alloy substrate () is essentially corrosion-free during the early stage of medical device implantation, and is therefore able to satisfy clinical requirements of mechanical performance during the early stage of medical device implantation.