Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Stent structure
Patent
1997-01-14
2000-06-27
Thaler, Michael H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Stent structure
623 116, 72135, A61M 2902
Patent
active
060801913
ABSTRACT:
A stent comprising a coil including a plurality of arcuate sections that alternate directions around a central axis, each arcuate section including a pair of curved turns joined by a cusp, and the cusps of adjacent arcuate sections intermeshing and defining at least one region of overlap, which in turn describes a helix around and along the length of the coil. In the preferred embodiment, there are two regions of overlap, which together describe a double helix. In another preferred embodiment, the stent is bifurcated so as to support a branched vessel or the like.
A method for forming a stent, including the steps of providing a flat sheet of material, chemically etching said sheet to form a blank, and forming said blank into a cylindrical coil. The coiling step is preferably carried out on a plurality of rollers.
REFERENCES:
patent: 4969458 (1990-11-01), Wiktor
patent: 5161547 (1992-11-01), Tower
patent: 5370683 (1994-12-01), Fontaine
patent: 5540713 (1996-07-01), Schnepp-pesch et al.
patent: 5632771 (1997-05-01), Boatman et al.
American BioMed, Inc.
Thaler Michael H.
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