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Stents with high radial strength and methods of manufacturing same
专利权人:
Timothy A. Limon;Nicole F. Hou;Brenna Hearn Lord
发明人:
Brenna Hearn Lord,Nicole F. Hou,Timothy A. Limon
申请号:
US12831440
公开号:
US08303644B2
申请日:
2010.07.07
申请国别(地区):
US
年份:
2012
代理人:
摘要:
Polymeric stents having fracture toughness and resistance to recoil after deployment are disclosed along with methods of manufacturing such stents. Improvements to mechanical characteristics and other improvements may be achieved by having polymer chains within individual stent struts oriented in a direction that is closer to or in line with the axis of the individual stent struts. The struts are connected to each other by hinge elements that are configured to bend during crimping and deployment of the stent. The hinge elements may be tangent or non-tangent to the adjoining struts so as to form W-shaped closed cells arranged in an offset brick pattern in which the size each W-shaped closed cell can be defined in part by a curvilinear length that is approximately 4.5 mm, which allows the stent to be crimped down to an OD of about 1.3 mm and expanded to an OD of at least about 3.5 mm.
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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