Catheter with multi port tip for optical lesion evaluation

Details Catheter with multi port tip for optical lesion evaluation Catheter with multi port tip for optical lesion evaluation

A - Human Necessities

61

B

A61B 18/24 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2655446

A catheter is adapted to ablate tissue and provide optically-based lesion qualitative and quantitative monitoring, comprising a catheter body and a tip electrode distal the catheter body adapted for ablating tissue, the tip electrode having a shell and an alignment member defining a hollow distal portion therebetween. In accordance with the invention, the catheter further includes a plurality of optical waveguides adapted to transmit optical energy to and from the tip electrode. A distal portion of each waveguide extends through the hollow distal portion and terminates in openings formed in the shell. Advantageously, the alignment member fixedly secures the distal portion of each waveguide against movement relative to the alignment member and the shell.

L'invention concerne un cathéter adapté pour enlever du tissu cellulaire et permettre une surveillance optique qualitative et quantitative des lésions, qui comporte un corps de cathéter et une pointe à électrode distale par rapport au corps du cathéter adaptée pour enlever du tissu cellulaire, la pointe à électrode possédant une coque et un organe d'alignement définissant une partie distale creuse entre les deux. Conformément à l'invention, le cathéter comprend en outre une pluralité de guides d'ondes optiques adaptés pour transmettre de l'énergie optique à la pointe à électrode ou depuis celle-ci. Une partie distale de chaque guide d'ondes traverse la partie distale creuse et se termine dans les ouvertures formées dans la coque. De manière avantageuse, l'organe d'alignement immobilise d'une manière fixe la partie distale de chaque guide d'ondes contre tout mouvement relatif de l'organe d'alignement et de la coque.

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