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METHOD TO MANUFACTURE THIN STRUT STENT FROM BIOABSORBABLE POLYMER WITH HIGH FATIGUE AND RADIAL STRENGTH
专利权人:
MERIL LIFE SCIENCES PVT. LTD.
发明人:
RAJNIKANT GANDALAL VYAS,Pramod Kumar Minocha,Deveshkumar Mahendralal Kothwala
申请号:
US15479316
公开号:
US20170203494A1
申请日:
2017.04.05
申请国别(地区):
US
年份:
2017
代理人:
摘要:
The invention discloses a process for the preparation of a biodegradable stent which involves deforming an extruded biodegradable polymer tube axially at a first predefined temperature by applying an axial force for a first predefined time interval. The process is followed by radially expanding the axially stretched tube at a second predefined temperature by pressurizing the tube with an inert gas in one or more stages, the pressure applied in each successive stage being higher than the pressure applied in a previous stage. The process further comprises laser cutting a specific pattern of scaffold structure on the expanded tube and then crimping the laser cut stent on the balloon of delivery catheter in a sterile environment in multiple stages.
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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