Title:
ABSORBABLE IRON-BASED ALLOY IMPLANTABLE MEDICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/117924
Kind Code:
A1
Abstract:
Disclosed is an absorbable iron-based alloy implantable medical device, including an iron-based alloy substrate (11) and a degradable polymer coating (13) and a zinc-containing protector (12) which are arranged on the surface of the iron-based alloy substrate (11). The zinc-containing protector (12) is selected from zinc and/or a zinc alloy, or a mixture of zinc and/or a zinc alloy and a degradable binder. The weight percentage of the zinc and/or zinc alloy in the mixture is greater than or equal to 20% and less than 100%. The zinc-containing protector (12) is capable of delaying the corrosion of the iron-based alloy substrate (11) during the early stage of implantation, such that the iron-based alloy substrate (11) being essentially not corroded during the early stage of implantation can be achieved and the clinical mechanical property requirements for the device in the early stage of implantation can be satisfied.
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Inventors:
LIU ZIQIANG (CN)
QI HAIPING (CN)
LIN WENJIAO (CN)
ZHANG DEYUAN (CN)
QI HAIPING (CN)
LIN WENJIAO (CN)
ZHANG DEYUAN (CN)
Application Number:
PCT/CN2016/087304
Publication Date:
July 13, 2017
Filing Date:
June 27, 2016
Export Citation:
Assignee:
LIFETECH SCIENT (SHENZHEN) CO LTD (CN)
International Classes:
A61L27/04; A61L27/34; A61L27/54; A61L27/58
Foreign References:
| CN105030390A | 2015-11-11 | |||
| AU2015252144A1 | 2015-11-26 | |||
| US20100087914A1 | 2010-04-08 | |||
| CN102772831A | 2012-11-14 | |||
| US20130261735A1 | 2013-10-03 |
Other References:
See also references of EP 3400971A4
None
None
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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