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DISPOSITIF MÉDICAL POUVANT ÊTRE IMPLANTÉ ET ABSORBABLE EN ALLIAGE À BASE DE FER POUR UNE FIXATION INTERNE
专利权人:
Ltd.;Lifetech Scientific (Shenzhen) Co.
发明人:
申请号:
EP16880462.3
公开号:
EP3398622A4
申请日:
2016.06.27
申请国别(地区):
EP
年份:
2019
代理人:
摘要:
An iron-based alloy absorbable and implantable medical device for internal fixation. A substrate includes an iron-based alloy and degradable polymer. The mass ratio of the iron-based alloy to the degradable polymer is between 1:4 and 4:1. The weight-average molecular weight of the degradable polymer is between 150000 to 3000000, and the polydispersity index thereof is between 1 and 6. The device further includes antioxidants. The iron-based alloy is used as a load-bearing framework or reinforcement phase of the device. By adjusting the mass ratio of the iron-based alloy to the degradable polymer and the combination mode thereof, the corrosion rate of the iron-based alloy in the late period of the implantation is accelerated, and the quantity of corrosion products poorly soluble in the iron-based alloy is reduced. Adding antioxidants to the device further reduces the quantity of the corrosion products poorly soluble in the iron-based alloy.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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