Overlay dual balloon catheter and method for use thereof

Details Overlay dual balloon catheter and method for use thereof Overlay dual balloon catheter and method for use thereof

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61F 2/06 (2006.01) A61M 29/00 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2264849

This invention is an overlay dual balloon catheter (10). Two balloons (14, 22) composed of differing materials are employed, the balloons being disposed so as to overlap one another but not being bonded to one another, so that adjacent surfaces of the two balloons are permitted to move relative to one another, to provide improved surface and structural characteristics in a balloon unit. Preferably, an outer balloon (22), disposed on the exterior of the catheter is composed of latex, silicone, or a thermoplastic elastomer while an inner balloon (14), disposed underneath the first balloon is composed of a material employed in existing angioplasty balloons such as polyester or polyurethane. The overlay dual balloon catheter (10) may be used in angioplasty, embolectomy and thrombectomy.

L'invention concerne un cathéter à deux ballonnets chevauchants. Deux ballonnets composés de matériaux différents sont utilisés, ces ballonnets étant placés de manière à se chevaucher l'un l'autre, sans cependant être liés l'un par rapport à l'autre, de sorte que des surfaces adjacentes des deux ballonnets peuvent se mouvoir l'une par rapport à l'autre, en vue d'obtenir une surface et des caractéristiques de structure améliorées dans une unité de ballonnet. De préférence, un ballonnet extérieur placé sur l'extérieur du cathéter est composé de latex, de silicone, ou d'un élastomère thermoplastique, et un ballonnet intérieur placé au-dessous du premier ballonnet est composé d'un matériau employé dans des ballonnets d'angioplastie existants, tel du polyester ou du polyuréthanne. Ce cathéter à deux ballonnets chevauchants peut être utilisé en angioplastie, embolectomie et thrombectomie.

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