Balloon catheter

Details Balloon catheter Balloon catheter

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2612135

A balloon catheter capable of expanding the stenosed part of a blood vessel near a bent portion and capable of forming the shape of a balloon in a specific bent shape without performing delicate control. The balloon (5) of the balloon catheter (1) is molded in a shape having the bent portion beforehand. When the internal pressure of the balloon (5) is increased, the balloon is expanded so as to be formed in the bent shape provided at the time of molding. Since the bent shape is maintained even if the internal pressure of the balloon (5) is increased, the bent angle, diameter, and length of the balloon (5) are not changed according to a rise in the internal pressure of the balloon (5). Thus, the balloon (5) can be expanded to the predetermined bent shape unless the internal pressure of the balloon (5) is delicately controlled.

La présente invention concerne un cathéter à ballonnet pouvant dilater la partie sténosée d~un vaisseau sanguin à proximité d~une partie courbée et pouvant donner à un ballonnet une forme courbée spécifique sans réaliser un contrôle délicat. Le ballonnet (5) du cathéter à ballonnet (1) est moulé suivant une forme présentant la partie pré-courbée. Quand la pression interne du ballonnet (5) est augmentée, le ballonnet se dilate de manière à adopter la forme courbée donnée au moment du moulage. Étant donné que la forme courbée est conservée même si la pression interne du ballonnet (5) est augmentée, l~angle de courbure, le diamètre et la longueur du ballonnet (5) ne changent pas avec l~augmentation de la pression interne du ballonnet (5). Le ballonnet (5) peut ainsi être dilaté à la forme courbée prédéterminée à moins de contrôler délicatement la pression interne du ballonnet (5).

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