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. 10, 2025
Filed:
Jun. 08, 2016
Lifetech Scientific (Shenzhen) Co., Ltd., Shenzhen, CN;
Haiping Qi, Shenzhen, CN;
Wenjiao Lin, Shenzhen, CN;
BIOTYX MEDICAL (SHENZHEN) CO., LTD., Shenzhen, CN;
Abstract
Disclosed are an absorbable iron-based alloy implanted medical device () and preparation method thereof. The device () comprises an iron-based alloy base (), a degradable polymer () arranged on the surface of the iron-based alloy base, and an alkaline protector () arranged on the surface of the iron-based alloy base. The alkaline protector () contains at least one alkaline substance capable of neutralizing the acidic substance produced by the polymer at the early stage after the device is implanted to delay the corrosion of the iron-based alloy base () in the early stage of implantation, hence the iron-based alloy base () would not substantially corrode or would corrode slowly, clinically satisfying the mechanical properties and requirements of the device () in the early stage of implantation; and in the meantime, after the neutralization and consumption of the alkaline protector () exposes the base (), the base () can still accelerate the corrosion speed thereof in the acidic environment formed by the polymer (), so as to clinically satisfy the requirement of the corrosion cycle of the device () at the same time.