Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Stent structure
Patent
1997-03-07
1999-10-19
Buiz, Michael
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Stent structure
606194, A61F 206
Patent
active
059680881
ABSTRACT:
An expandable endovascular stent comprises a flexible, tubular body (1) with a longitudinal axis, the wall of which is formed by interconnected, closed lattice cells (2) arranged with at least two cells adjacent to each other in the circumferential direction. Filament-shaped lattice material capable of transmitting compressive forces in the axial direction of the filament extends continuously from one lattice cell directly into the lattice cell following in the longitudinal direction. The stent can be expanded from a radially compressed state into a radially expanded state having a larger diameter. In the expanded state of the stent, the pressure transmitting lattice material in several of the lattice cells (2) forms a heart-like or arrowhead-like shape with at least two interconnected diverging, angle .beta. cell sides (5) positioned opposite to and interconnected with at least two mutually converging, angle .alpha. longer cell sides (3). For stability during expansion and compression of a self-expanding stent, the sum of the first angle .alpha. and the second angle .beta. should be in the range of 345.degree. to 360.degree., preferably at 360.degree. to maintain a constant axial stent length.
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Berry Dale
Hansen Palle M.
Herald Coy M.
Vendrely Timothy G.
Buiz Michael
Godlewski Richard J.
Reip David O.
William Cook Europe A/S
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