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:
Aug. 25, 2020
Filed:
Jun. 01, 2016
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Li Qin, Shenzhen, CN;
Deyuan Zhang, Shenzhen, CN;
Wenjiao Lin, Shenzhen, CN;
Haiping Qi, Shenzhen, CN;
Ziqiang Liu, Shenzhen, CN;
Lifetech Scientific (Shenzhen) Co. Ltd., Shenzhen, CN;
Abstract
Provided are an iron-based absorbable and implantable medical device and manufacturing method thereof. The iron-based absorbable and implantable medical device () comprises a substrate (), a degradable polymer layer (), and an anionic surfactant layer () located between the substrate () and the degradable polymer layer (). The anionic surfactant, by using the hydrophobicity thereof, can form a hydrophobic barrier layer in a solution to isolate a surface of the iron-based substrate () from a body fluid environment, thereby avoiding direct contact with an acidic environment resulting from degradation of the degradable polymer layer () at the initial and early stages of implantation, thus preventing severe local corrosion of the iron-based substrate ().