Surgical cutting tool

Details Surgical cutting tool Surgical cutting tool

A - Human Necessities

61

B

A61B 17/22 (2006.01)

Patent

CA 2126096

An atherectomy catheter device (10) includes an improved guidewire system including a guidewire port member (16) secured to the distal tip portion (13) of the outer tubular member (12) of an atherectomy catheter of the coaxial type having large and small concentrically disposed elongated flexible tubular members (12, 15) with a rotating cutter member (18) fixed to the distal end of the inner tubular member (15). The guidewire (17) is spaced from the cutter head (18) yet controls the cutter disposition relative to the vessel lumen of interest. The inner and outer tubular members (12, 15) are constructed simultaneously to provide flushing liquid and to aspirate the cutting site.

Un dispositif de cathéter d'athérectomie (10) comprend un système de fil-guide amélioré, incluant une composante d'accès (16) pour le fil, fixée à l'extrémité distale (13) de la partie tubulaire externe (12) d'un cathéter d'athérectomie de type coaxial, possédant des éléments tubulaires flexibles allongés, petits et grands, disposés de façon concentrique (12, 15), avec un couteau rotatif (18) fixé à l'extrémité distale de la partie tubulaire interne (15). Le fil-guide (17) est espacé de la tête du couteau (18), mais commande néanmoins l'orientation du couteau par rapport à la lumière du vaisseau visité. Les parties tubulaires interne et externe (12, 15) sont conçues de façon à fournir le liquide de purge et à aspirer le site de coupe.

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