Slip-layered catheter balloon

Details Slip-layered catheter balloon Slip-layered catheter balloon

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61M 25/00 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2179636

A slip-layered balloon catheter (10) for insertion into a bodily conduit, especially an artery. The catheter comprises a shaft (21) having at least one lumen (26) for delivery of a fluid inflation media and a slip-layered balloon (12, 30a) made up of a plurality of layers (14 15, 37) with a low-friction substance (18, 42) between the layers. The low-friction substance causes the layers to slide readily relative to one another, softening the balloon while maintaining its strength. Optionally, the balloon (30a) includes a plurality of slip-layered segments (40) radially disposed about the balloon wall, and separated by lengthwise ridges (41) joining the layers of each segment together. Also optionally, an elastic sleeve (51) surrounds the balloon wall to improve refordability of the balloon (50).

Cathéter (10) à ballonnet à couches glissant entre elles, destiné à être introduit dans un passage corporel, particulièrement dans une artère. Ledit cathéter comprend une tige (21) dotée d'au moins un passage (26) destiné à l'introduction d'un fluide de gonflage, et un ballonnet (12, 30a) à couches glissant entre elles, constitué d'une pluralité de couches (14, 15, 37) comportant entre elles une substance (18, 42) à faible coefficient de friction. Ladite substance permet aux couches de glisser facilement l'une par rapport à l'autre, assouplissant ainsi le ballonnet tout en préservant sa solidité. Eventuellement, le ballonnet (30a) comprend une pluralité de segments (40) à couches glissant l'une sur l'autre, disposés radialement autour de la paroi de ballonnet, et séparés par des nervures (41) longitudinales joignant ensemble les couches de chaque segment. Eventuellement également, un manchon élastique (51) entoure la paroi du ballonnet pour améliorer le repliement de ce dernier (50).

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