A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/02 (2006.01) A61B 17/00 (2006.01) A61B 17/22 (2006.01)
Patent
CA 2314352
Post angio-plasty hyperplasia in blood vessels is treated using a cryosurgical balloon catheter (10). The balloon catheter is positioned at a target region within the blood vessel, and the balloon (18) inflated by expanding a cryogenic fluid, such as liquid nitrogen, across an expansion orifice into a balloon. The balloon will be constructed so that cooling is achieved primarily in the central regions of the balloon, with the proximal, and distal regions being less cold, and acting to insulate adjacent regions of the blood vessel from excessive cooling.
L'invention consiste à traiter l'hyperplasie après angioplastie dans des vaisseaux sanguins au moyen d'un cathéter à ballonnet cryochirurgical (10). On place le cathéter à ballonnet dans une zone cible à l'intérieur du vaisseau sanguin, et on gonfle le ballonnet (18) par introduction dans celui-ci d'un fluide cryogénique, tel que l'azote liquide, à travers un orifice d'introduction. Ce ballonnet est conçu de manière que le refroidissement se fasse principalement dans les zones centrales du ballonnet, les zones proximale et distale restant moins froides, de façon à isoler les zones adjacentes du vaisseau sanguin d'un refroidissement excessif.
Joye James
Williams Ronald
Fetherstonhaugh & Co.
Odyssey Technologies Inc.
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