Dilatation catheter with eccentric balloon
First Claim
Patent Images
1. A balloon dilatation catheter which comprises:
- a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, andan inflatable dilatation balloon having proximal and distal ends,wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon and the second lumen extends longitudinally with the first lumen, the proximal end of the second lumen being adjacent to the proximal end of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon and containing a rigid or substantially rigid triangularly-shaped lubricious liner, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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Abstract
This invention relates to a balloon dilatation catheter. The balloon dilatation catheter comprises a first, inflation lumen extending therethrough and having distal and proximal ends, the distal end of the first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with and exterior to the dilatation balloon.
59 Citations
38 Claims
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1. A balloon dilatation catheter which comprises:
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a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon and the second lumen extends longitudinally with the first lumen, the proximal end of the second lumen being adjacent to the proximal end of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon and containing a rigid or substantially rigid triangularly-shaped lubricious liner, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. A balloon dilatation catheter system which comprises one or more catheters of claim i and a guidewire.
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11. A balloon dilatation catheter which comprises:
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a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of the first lumen opens into and is in fluid communication with the interior of the dilatation balloon, the proximal end of the second lumen being open and being located substantially distal to the proximal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon and containing a rigid or substantially rigid triangularly shaped lubricious liner, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A balloon dilatation catheter which comprises:
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a first, inflation lumen extending therethrough and having distal and proximal ends, the distal end of said first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with the first lumen, having proximal and distal ends, wherein the proximal end of the second lumen is adjacent to the proximal end of the first lumen, the distal end of the second lumen is open and distal to the distal end of the balloon, and wherein the distal section of the second lumen is exterior to the balloon and has an opening proximal, adjacent, or distal to the proximal end of the dilatation balloon, and the section of the second lumen distal to the opening is enlarged as compared to the proximal section of the second lumen and contains a rigid or substantially rigid triangularly shaped lubricious liner. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A perfusion balloon which comprises:
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a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal open ends, an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of the first lumen opens into and is in fluid communication with the interior of the dilatation balloon, the distal end of the second lumen being distal to the distal end of the first lumen and the second lumen being exterior to the dilatation balloon, the proximal and distal ends of the second lumen being relatively disposed perfusion openings, and the second lumen permitting blood flow past the dilatation balloon while the balloon is forcefully inflated with pressurized fluid. - View Dependent Claims (29, 30)
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- 31. A perfusion balloon catheter comprising a catheter shaft, an expansible balloon section carried at a distal end portion of the catheter shaft, and a perfusion conduit exterior to the balloon section and defining proximal and distal perfusion openings respectively disposed relative to said balloon section and communicating with one another via a passage of said perfusion conduit, said perfusion conduit maintaining said conduit passage open to permit perfusion blood flow past said balloon while the latter is forcefully inflated with pressurized fluid.
Specification