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:
Jan. 28, 2020
Filed:
Jun. 07, 2016
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Haiping Qi, Shenzhen, CN;
Ziqiang Liu, Shenzhen, CN;
Li Qin, Shenzhen, CN;
Deyuan Zhang, Shenzhen, CN;
Wenjiao Lin, Shenzhen, CN;
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Abstract
Absorbable iron-based alloy implanted medical device and manufacturing method thereof. The iron-based alloy implanted medical device comprises an iron-based alloy substrate (), a degradable polymer layer () disposed on a surface of the iron-based alloy substrate (), and a tannic acid chemical conversion film () disposed on a surface of the iron-based alloy substrate (). After the medical device is implanted into a body, the tannic acid chemical conversion film () is configured to protect the iron-based alloy substrate () coated thereby from being in contact with a body fluid, thereby ensuring that the device meets a clinical mechanical property requirement in the early stage of implantation. Furthermore, the iron-based alloy implanted medical device has a decreased size, and produces a decreased amount of a corrosive product after being implanted, facilitating faster absorption or elimination of the corrosive product.