Pu Zhou,Erik Bulman,Timothy A. Geiser,Michael G. Valdez,Yidong M. Zhu,Baigui Bian,Sonny Tran,Richard D. White,Thanh Huy Le,Tung T. Le,Alpana Kiran Gowdar,Yong Gao,David Delon Williams
申请号：
US16550922
公开号：
US20200108231A1
申请日:
2019.08.26
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
