A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/22 (2006.01) A61D 1/02 (2006.01) A61B 17/00 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2404144
Devices (10, 130), methods, kits, and methods remove obstructive material (O) from the vascular (W) and other body lumens (BV). Expansible baskets (18, 20) may be used as cooperating radially expansible shearing members. Helically oriented struts (30) of each basket (18 or 20) may wind in a uniform circumferential direction. The struts (30) can be independently flexible, allowing the shearing members (18, 20) to flex axially together. The inner basket (18) may be rotatably driven and may use an axial pump (141') extending proximally from the shearing members (18, 20) and/or a distal penetrator (122) for advancing into an occlusion (O) which inhibits guidewire (GW) access. The struts (30) may slide substantially continuously across each other, and may be sufficiently aggressive for highly effective thrombectomy. A rotationally static and axially flexible outer basket (20) may provide a safe, limited atherectomy treatment.
L'invention porte sur des dispositifs (10, 130), procédés et trousses permettant d'éliminer les substances (O) obstruant le système vasculaire (W) et d'autres lumières corporelles (BV). On utilise à cet effet comme éléments cisaillants deux paniers dilatables (18, 20) radialement, et comportant des arceaux (30) en hélice s'enroulant uniformément dans le sens de la circonférence. Lesdits arceaux (30) étant individuellement flexibles, les éléments cisaillants (18, 20) peuvent fléchir axialement ensemble. Le panier intérieur (18), rotatif, peut utiliser une pompe (141') placée en amont des éléments cisaillants (18, 20), et/ou un pénétrateur (122) placé en aval et pouvant pénétrer dans une occlusion (O) empêchant l'accès du fil guide (GW). Les arceaux (30), qui peuvent glisser quasi continuellement les uns sur les autres, sont suffisamment agressifs pour effectuer une thrombectomie très efficace. Le panier extérieur (20) non rotatif et axialement flexible assure un traitement athérectomique sûr et limité.
Demarais Denise M.
Evans Michael A.
Eversull Christian S.
Leeflang Stephen A.
Bacchus Vascular Inc.
Fetherstonhaugh & Co.
Tyco Healthcare Group Lp
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