A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/32 (2006.01) A61B 17/22 (2006.01)
Patent
CA 2131702
An improved valve cutter (10) for in-situ incision of valve leaflets which safely, efficiently, and consistently renders venous valves incompetent while minimizing frictional forces on the endothelium of the vessel and preventing inadvertent contact between cutting surfaces and the intima of the vein wall. The valve cutter (10) includes a plurality of proximally directed prongs (36) presenting sharp edges, where the prongs (36) are separated by slots (38) similarly presenting sharp edges to pierce the valve leaflets so that the cutting head (12) is provided with a continuous cutting surface in multiple planes running along the entire forward edge of the cutting head. Means are provided for viewing the valves as they are penetrated by the sharp cutting edges.
L'invention concerne un sectionneur de valvules (10) amélioré pour effectuer des incisions in-situ de valves de valvules qui mettent les valvules des sinus veineux hors circuit, en toute sécurité, en toute efficacité et de manière constante, tout en minimisant les forces de frottement exercées sur l'endothélium du vaisseau et en évitant que les surface de coupe et la tunique interne de la paroi veineuse n'entrent en contact par inadvertance. Le sectionneur de valvules de sinus veineux (10) comporte une pluralité de dents (36) orientées en direction proximale, à arêtes vives. Les dents (36) sont séparées par des fontes (38) qui comportent elles aussi des arêtes vives afin de percer les valves de valvules, de manière que la tête de coupe (12) dispose d'une surface de coupe continue dans de multiples plans s'étendant tout le long de l'arête avant de la tête de coupe. L'invention concerne également des moyens de visualiser les valves de valvules au fur et à mesure que les arêtes vives de coupe y pénètrent.
Goldberg Edward M.
Goldberg Mark
Melinyshyn Lev
Poloyko Alexander
Smart & Biggar
Uresil Corporation
LandOfFree
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