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1. (WO2018121350) ABSORBABLE IRON-BASED INSTRUMENT

Pub. No.:    WO/2018/121350    International Application No.:    PCT/CN2017/117214
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 20 00:59:59 CET 2017
IPC: A61L 17/10
A61L 17/12
A61L 27/04
A61L 27/18
A61L 27/58
A61L 31/02
A61L 31/06
A61L 31/14
A61L 31/16
A61L 27/54
Applicants: LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
先健科技(深圳)有限公司
Inventors: SUN, Hongtao
孙宏涛
ZHANG, Deyuan
张德元
HU, Jun
胡军
CHEN, Liping
陈丽萍
Title: ABSORBABLE IRON-BASED INSTRUMENT
Abstract:
Provided is an absorbable iron-based instrument, comprising an iron-based substrate, a zinc-containing protector in contact with the iron-based substrate, and a degradable polyester in contact with the iron-based substrate and/or the zinc-containing protector. The range of the ratio of the mass of the zinc-containing protector to the mass of the iron-based substrate is 1:200 to 1:2. In the degradable polyester, the mass fraction of a low-molecular-weight part with a molecular weight of less than 10,000 is less than or equal to 5%; alternatively, in the degradable polyester, the mass fraction of a residual monomer is less than or equal to 2%.