Endarterectomy catheter and method of use thereof

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/32 (2006.01) A61B 17/22 (2006.01) A61B 19/00 (2006.01) A61F 2/02 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2043737

An endarterectomy catheter for removing obstructions from an artery comprises a cylindrical housing, the housing having an opening across which a primary shear is movable. The primary shear is razor sharp and cylindrical and movable by means of a cable and trigger backward and forward within the housing to excise obstructions that protrude into the opening. A guide wire positions the catheter in an artery. The edge of the housing at the opening may be sharp to grip the obstruction and to assist in the cutting action of the primary shear. The shear is hollow and collects debris from the excised obstruction. Openings in the housing allow blood to pass through the body. A method of removing obstructions from an artery includes locating a housing in an artery with an obstruction protruding into an opening in the housing, moving a razor sharp cylindrical shear across the opening to excise the obstruction, encapsulating the excised obstruction in the housing, and removing the housing from the artery.

Cathéter d'endartériectomie destiné à éliminer les obstructions dans une artère composé d'une structure rigide cylindrique, ladite structure rigide présentant une ouverture à travers laquelle coulisse un ciseau principal . Le ciseau principal de forme cylindrique est tranchant comme une lame de rasoir, il peut être déplacé au moyen d'un câble et être actionné vers l'avant et vers l'arrière à l'intérieur de la structure rigide afin d'exciser les obstructions qui font saillie à l'intérieur de l'ouverture. Un fil-guide est utilisé pour positionner le cathéter dans l'artère. Le rebord de la structure rigide peut être tranchant au niveau de l'ouverture afin de retenir l'obstruction et de faciliter l'action de cisaillement du ciseau principal. Le ciseau est creux et recueille les débris de l'obstruction qui est excisée. Des ouvertures pratiquées dans la structure rigide permettent au sang de circuler à travers le corps de celle-ci. Une méthode d'élimination des obstructions des artères englobe le placement d'une structure rigide dans une artère de manière que l'obstruction fasse saillie dans une ouverture de la structure rigide, le déplacement d'un ciseau cylindrique tranchant comme une lame de rasoir le long de l'ouverture pour exciser l'obstruction, l'encapsulation de l'obstruction excisée dans la structure rigide et le retrait de la structure rigide de l'artère.

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