Improved balloon catheter

Details Improved balloon catheter Improved balloon catheter

A - Human Necessities

61

M

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

Patent

CA 2170157

An expansible balloon catheter (10, 15) has at least a first exterior surface (27) with a given coefficient of friction and a second exterior surface (32) with a greater coefficient of friction. In a compact form only the first exterior surface is exposed to produce a low coefficient of friction during transfer of the collapsed or unflated balloon to and across a lesion. When inflated, the second surface dominates the first surface and produces an increased coefficient of friction overall thereby to stabilize the balloon in the lesion.

Un cathéter à ballonnet expansible (10, 15) présente au moins une première surface extérieure (27) dotée d'un coefficient de friction donné, ainsi qu'une seconde surface extérieure (32) dotée d'un coefficient de friction supérieur. Dans une forme compacte, seule la première surface extérieure est exposée afin de produire un faible coefficient de friction pendant le transfert du ballonnet affaissé ou dégonflé vers une lésion et au travers de celle-ci. Lorsque le ballonnet est gonflé, la seconde surface domine la première et produit un coefficient augmenté de friction global afin de stabiliser ainsi le ballonnet dans la lésion.

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