ABSORBABLE IRON-BASED ALLOY MEDICAL DEVICE IMPLANT

WIPO Patent Application WO/2017/117923

A1

An absorbable iron-based alloy medical device implant, comprising an iron-based alloy substrate (11) and a degradable polymer (13) provided on a surface of an iron-based alloy substrate (11), and a zinc-containing protective member (12) provided on the surface of the iron-based alloy substrate (11). The zinc-containing protective member (12) 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 (12) can delay corrosion of the iron-based alloy substrate (11) during an early stage of medical device implantation. The iron-based alloy substrate (11) 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.

QI HAIPING (CN)
LIN WENJIAO (CN)

PCT/CN2016/087302

July 13, 2017

June 27, 2016

Click for automatic bibliography generation  

LIFETECH SCIENT (SHENZHEN) CO LTD (CN)

A61L27/04; A61L27/00; A61L27/12; A61L27/18; A61L27/20; A61L27/50; A61L27/54; A61L27/58

CN104587534A	2015-05-06
JPS54118349A	1979-09-13
CN102228721A	2011-11-02
CN104962163A	2015-10-07
US5067990A	1991-11-26

PAN CHANGHUA LORD: "Zinc Phosphate", ENCYCLOPEDIA OF SMALL CHEMICAL PRODUCTION, 30 September 1999 (1999-09-30), pages 482, XP009512863, ISBN: 7-5025-2370-7

ADVANCE CHINA IP LAW OFFICE (CN)

View/Download PDF      PDF Help

Previous Patent: IMPLANTED DEVICE

Next Patent: ABSORBABLE IRON-BASED ALLOY IMPLANTABLE MEDICAL DEVICE