Spiral shaped perfusion balloon and method of use and manufacture
First Claim
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1. A dilation catheter for use in medical procedures comprising:
- an elongated flexible tubular member;
a dilating balloon disposed on said tubular member, said balloon member having an interior and exterior surface, said balloon having a collapsed condition of a size allowing said balloon to be transported through a body vessel, and said balloon having an expanded condition of a size allowing said exterior surface to engage a body vessel wall;
a longitudinally extending spiral wall formed integrally with said exterior surface, said spiral wall defining a longitudinally extending spiral channel spaced radially inwardly from said exterior surface when said balloon is in its expanded condition; and
means for passing fluid between said balloon member and said tubular member to vary said balloon member between its collapsed and expanded conditions;
further including a membrane disposed over said longitudinally extending spiral channel, said membrane sealingly connected to the exterior surface of said balloon, and said membrane includes a perforation therethrough at said spiral channel.
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Abstract
A dilation catheter suitable for use in medical procedures is provided. The catheter includes a balloon disposed on an elongated tube. The tube is capable of passing fluid between the balloon and the tube for varying the balloon between an inflated expanded condition and a deflated collapsed condition. The balloon includes a longitudinally extending spiral wall which forms a longitudinally extending spiral channel spaced inwardly from the exterior surface of the balloon when the balloon is in its expanded condition to allow fluid to be perfused past the balloon.
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Citations
13 Claims
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1. A dilation catheter for use in medical procedures comprising:
- an elongated flexible tubular member;
a dilating balloon disposed on said tubular member, said balloon member having an interior and exterior surface, said balloon having a collapsed condition of a size allowing said balloon to be transported through a body vessel, and said balloon having an expanded condition of a size allowing said exterior surface to engage a body vessel wall;
a longitudinally extending spiral wall formed integrally with said exterior surface, said spiral wall defining a longitudinally extending spiral channel spaced radially inwardly from said exterior surface when said balloon is in its expanded condition; and
means for passing fluid between said balloon member and said tubular member to vary said balloon member between its collapsed and expanded conditions;further including a membrane disposed over said longitudinally extending spiral channel, said membrane sealingly connected to the exterior surface of said balloon, and said membrane includes a perforation therethrough at said spiral channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- an elongated flexible tubular member;
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10. A method of performing percutaneous transluminal angioplasty procedures utilizing a dilation catheter, wherein said method comprises the steps of:
- providing a dilation catheter having an elongated flexible tubular member having an extensible balloon disposed on said tubular member, said balloon including an exterior surface and inflatable between a collapsed condition of a size allowing said dilation catheter to be transported through a body vessel and an expanded condition of a size allowing said exterior surface to engage a body vessel wall, said exterior surface including a longitudinally extending spiral wall forming a longitudinally extending spiral channel spaced radially inwardly from said exterior surface when said balloon is in its expanded condition and a membrane disposed over the longitudinally extending spiral channel, the membrane having a perforation therethrough;
inserting said dilation catheter in its collapsed condition into a body vessel;
positioning said balloon adjacent a stenosis or restriction in said body vessel;
inflating said balloon to its expanded condition for a predetermined period of time to a sufficient size so that said exterior surface engages said stenosis while simultaneously perfusing blood through said spiral channel, including through the perforation of the membrane; and
deflating said balloon to its collapsed condition. - View Dependent Claims (11, 12, 13)
- providing a dilation catheter having an elongated flexible tubular member having an extensible balloon disposed on said tubular member, said balloon including an exterior surface and inflatable between a collapsed condition of a size allowing said dilation catheter to be transported through a body vessel and an expanded condition of a size allowing said exterior surface to engage a body vessel wall, said exterior surface including a longitudinally extending spiral wall forming a longitudinally extending spiral channel spaced radially inwardly from said exterior surface when said balloon is in its expanded condition and a membrane disposed over the longitudinally extending spiral channel, the membrane having a perforation therethrough;
Specification