Overlay dual balloon catheter and method for use thereof
First Claim
1. A balloon catheter, comprising:
- a catheter having a lumen therein;
an inner balloon disposed around a portion of said catheter, said inner balloon having an outer surface and said catheter having an aperture therein for fluid communication between said lumen and said inner balloon, for inflating said inner balloon; and
an outer balloon having an inner surface, said outer balloon being disposed over said inner balloon so that said inner surface of said outer balloon and said outer surface of said inner balloon remain substantially in contact with, and are movable relative to, one another during said inflating.
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Accused Products
Abstract
An overlay dual balloon catheter. Two balloons 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, disposed on the exterior of the catheter is composed of latex, silicone, or a thermoplastic elastomer while an inner balloon, 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 may be used in angioplasty, embolectomy and thrombectomy.
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Citations
29 Claims
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1. A balloon catheter, comprising:
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a catheter having a lumen therein; an inner balloon disposed around a portion of said catheter, said inner balloon having an outer surface and said catheter having an aperture therein for fluid communication between said lumen and said inner balloon, for inflating said inner balloon; and an outer balloon having an inner surface, said outer balloon being disposed over said inner balloon so that said inner surface of said outer balloon and said outer surface of said inner balloon remain substantially in contact with, and are movable relative to, one another during said inflating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A balloon catheter, comprising:
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a catheter having a lumen therein; an inner balloon disposed around a portion of said catheter, said catheter having an aperture therein for fluid communication between said lumen and said inner balloon; and an outer balloon disposed over said inner balloon, wherein in an uninflated state of said inner balloon, said outer balloon is under a predetermined amount of tension relative to said inner balloon. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification