Systems and methods for steering a catheter through body tissue

Details Systems and methods for steering a catheter through body tissue Systems and methods for steering a catheter through body tissue

A - Human Necessities

61

M

A61M 25/01 (2006.01) A61B 18/24 (2006.01)

Patent

CA 2299237

Catheters for photoablating plaque build-up in blood vessels are described. In one form, the catheter (18) includes a catheter body (26) having a first group of optic fibers, and a second group of optic fibers. The first group of optic fibers (36A) is adjacent the second group of optic fibers (36B). Each group of optic fibers includes at least one optic fiber having a first end, and a second end. The second ends of the respective optic fibers form a substantially rounded hemispherical catheter head (30). A control element is coupled to the catheter body (26), and is configured to selectively transmit energy through either the first group of optic fibers (36A), or the second group of optic fibers (36B), or both the first and second groups of optic fibers.

L'invention concerne des cathéters destinés à la photoablation de plaques constituées dans les vaisseaux sanguins. Selon un mode de réalisation de l'invention, le cathéter (18) comprend un corps (26) pourvu d'un premier groupe de fibres optiques et d'un second groupe de fibres optiques. Le premier groupe de fibres optiques (36A) est adjacent au second groupe de fibres optiques (36B). Chaque groupe de fibres optiques comporte au moins une fibre optique ayant une première et une seconde extrémités. La seconde extrémité de chacune de ces fibres optiques forme une tête (30) de cathéter sensiblement hémisphérique. Un élément de commande, couplé au corps (26) du cathéter, est configuré pour transmettre de façon sélective l'énergie soit via le premier groupe de fibres optiques (36A), soit via le second groupe de fibres optiques (36B), soit via les deux.

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