Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Stent structure
Reexamination Certificate
2005-12-13
2005-12-13
Woo, Julian W. (Department: 3731)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Stent structure
C623S001180, C623S901000
Reexamination Certificate
active
06974472
ABSTRACT:
Disclosed herein is a flexible self-expandable stent using shape memory alloy for expanding stenosal portions and method and apparatus for fabricating the same. The self-expandable stent using shape memory allow, comprises a first cylindrical stent member comprised of a first wire formed of super elastic shape memory alloy, the first wire being bent a large number of times while being extended upwardly and downwardly a large number of times, so the first wire forms a plurality of variable rhombic spaces by forming a plurality of intersections for causing the first wire to be intersected with itself to resist longitudinal constriction of the first cylindrical stent member and a plurality of interlocked points for causing the first wire to be interlocked with itself at spaced positions to allow longitudinal constriction of the first cylindrical stent member; and a second cylindrical stent member comprised of a second wire formed of super elastic shape memory alloy, the second wire being diagonally extended in parallel with the previously positioned first wire and passed alternately under and over the first wire so as to divide each of a plurality of rhombic spaces formed in the first cylindrical stent member into four equal parts, thereby preventing the first and second cylindrical stent members from being separated from each other.
REFERENCES:
patent: 5545211 (1996-08-01), An et al.
patent: 6187036 (2001-02-01), Shaolian et al.
patent: 6312458 (2001-11-01), Golds
Hong Soon-Hyung
Jung Jin-Wook
Lee Jong-Taek
Park Jae-Hyung
Shin Kyoung-Min
Jagtiani & Guttag
Taewoong Medical Co., Ltd.
Webb Sarah
Woo Julian W.
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