A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/3207 (2006.01) A61B 17/32 (2006.01)
Patent
CA 2760449
The present invention provides an atherectomy catheter which has a cutting element that is able to cut both soft tissue and hard tissue, and methods of cutting material from a blood vessel lumen using a rotating cutting element. The cutting element has a sharp cutting edge that surrounds a cup-shaped surface and at least one surface of abrasive material. The cup-shaped surface directs the cut material into a tissue chamber. The cutting edge and the cup-shaped surface together are well suited to cut and remove relatively soft tissue from the blood vessel. The abrasive material surface in combination with the cutting element is well suited to abrade and remove hard material from the blood vessel.
La présente invention concerne un cathéter d'athérectomie qui présente un élément coupant pouvant découper à la fois le tissu mou et le tissu dur, ainsi que des procédés de découpe de matière à partir de la lumière d'un vaisseau sanguin en utilisant un élément coupant rotatif. L'élément coupant possède un bord tranchant qui entoure une surface cupuliforme et au moins une surface en matériau abrasif. La surface cupuliforme dirige la matière découpée dans une chambre à tissu. Le bord tranchant et la surface cupuliforme ensemble sont bien appropriés pour découper et extraire du tissu relativement mou du vaisseau sanguin. La surface en matériau abrasif associée à l'élément coupant est bien appropriée pour poncer et éliminer de la matière dure du vaisseau sanguin.
Brodeur Christopher
Doud Darren
Lee Kee
Moberg John
Whealon William
Smart & Biggar
Tyco Healthcare Group Lp
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