Endovascular laser device and treatment of varicose veins

Details Endovascular laser device and treatment of varicose veins Endovascular laser device and treatment of varicose veins

A - Human Necessities

61

B

A61B 18/18 (2006.01) A61B 18/20 (2006.01) A61N 5/06 (2006.01) A61N 5/067 (2006.01)

Patent

CA 2361634

A method is disclosed for treating blood vessels using endovascular techniques to deliver laser energy. Percutaneous access into the vein lumen will be obtained using an angiocatheter through which a fiber optic line will be introduced. The vein will be emptied of blood using elevation of the limb, patient positioning, compression, or other means. Laser energy will be delivered into the vein lumen using wavelengths from about 532 nanometers to about 1064 nanometers. Sufficient power and duration will be used to damage the entire thickness of the vein wall, ultimately causing fibrosis of the treated blood vessel. Fibrosis of the treated blood vessel causes the blood vessel to decrease in diameter or collapse.

L'invention concerne une technique permettant de traiter des vaisseaux sanguins au moyen de techniques endovasculaires permettant d'administrer de l'énergie laser. L'accès percutané à la lumière de la veine (30) s'effectue au moyen d'un angiocathéter, à travers lequel on introduit une ligne de fibre optique (40). La veine (30) est vidée de son sang par élévation du membre, positionnement du patient, compression, ou autres moyens. L'énergie laser est administrée dans la lumière de la veine (30) sous forme de longueurs d'ondes d'environ 532 à 1064 nanomètres. On utilise une puissance et une durée suffisantes pour altérer l'épaisseur totale de la paroi veineuse (30), et finalement provoquer la fibrose du vaisseau sanguin traité. Cette fibrose permet de réduire le diamètre dudit vaisseau sanguin ou de le collaber.

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