Title:
FLEXIBLE, STRETCHABLE COILED-SHEET STENT
Document Type and Number:
WIPO Patent Application WO2001001885
Kind Code:
B1
Abstract:
A coiled-sheet stent includes a tubular body having a longitudinal axis and a circumference, and a plurality of cylindrical bands formed in the tubular body, each band having a zig-zag pattern including a series of sequential diagonal elements connected to one another and extending about the circumference. A plurality of longitudinal connectors extend between and connect adjacent bands. The diagonal elements have an arcuate shape, all diagonal elements in each band being oriented in either a clockwise or counter-clockwise direction about the circumference. The tubular body is expandable between contracted and enlarged conditions, and the zig-zag pattern is expandable between unstretched and unstretched conditions, the zig-zag pattern being biased towards the stretched condition above a transition temperature, thereby at least partially defining the enlarged condition. A multi-cellular stent structure is also provided that includes a plurality of bat shaped cells formed in a tubular body, each cell defining a head region, a tail region and opposing curved wing regions, and a plurality of connectors extending between and connecting adjacent cells. The head and tail regions of adjacent cells are directly connected to one another, and connectors extend between adjacent wing regions of adjacent cells.
Inventors:
YANG YI
KHOSRAVI FARHAD
PATEL HIMANSHU N
KHOSRAVI FARHAD
PATEL HIMANSHU N
Application Number:
PCT/US2000/017206
Publication Date:
March 08, 2001
Filing Date:
June 22, 2000
Export Citation:
Assignee:
ENDOTEX INTERVENTIONAL SYS INC (US)
International Classes:
A61F2/92; (IPC1-7): A61F2/06
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