Balloon catheter
First Claim
Patent Images
1. A balloon catheter system, comprising:
- a catheter shaft defining an inflation lumen, the inflation lumen having a proximal end and a distal end;
an inflatable balloon having a balloon surface, a balloon proximal end and a balloon distal end;
a wire guide shaft defining a wire guide lumen, the wire guide shaft having proximal and distal ends, wherein the proximal end of the wire guide shaft is distal to the balloon distal end;
a conductive elastomer electrode means coated onto the balloon surface of said inflatable balloon, wherein the conductive elastomer electrode means comprises an elastic polymer that is electrically conductive; and
a catheter tip having tip proximal and tip distal ends, wherein the distal end of the inflation lumen opens into and is in communication with an interior of the inflatable balloon, the balloon distal end is sealed by the tip proximal end, and the wire guide shaft is coupled only to the catheter tip completely distally of the balloon distal end.
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Abstract
An ablation balloon catheter for treating tissues or atherosclerosis on a patient having a prior angioplasty procedure, the balloon catheter comprising a conductive elastomer electrode means which is coated onto a balloon surface and is connected to a radiofrequency current source to supply radiofrequency thermal therapy to the tissue for therapeutic ablation purposes.
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Citations
16 Claims
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1. A balloon catheter system, comprising:
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a catheter shaft defining an inflation lumen, the inflation lumen having a proximal end and a distal end; an inflatable balloon having a balloon surface, a balloon proximal end and a balloon distal end; a wire guide shaft defining a wire guide lumen, the wire guide shaft having proximal and distal ends, wherein the proximal end of the wire guide shaft is distal to the balloon distal end; a conductive elastomer electrode means coated onto the balloon surface of said inflatable balloon, wherein the conductive elastomer electrode means comprises an elastic polymer that is electrically conductive; and a catheter tip having tip proximal and tip distal ends, wherein the distal end of the inflation lumen opens into and is in communication with an interior of the inflatable balloon, the balloon distal end is sealed by the tip proximal end, and the wire guide shaft is coupled only to the catheter tip completely distally of the balloon distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A balloon catheter system, comprising:
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a catheter shaft defining an inflation lumen, the inflation lumen having a proximal end and a distal end; an inflatable balloon having a balloon surface, a balloon proximal end and a balloon distal end, wherein the inflatable balloon is made by mixing a conductive elastomer substrate with a balloon raw material and by extruding the mixture to make the balloon that is electrically conductive, wherein said conductive elastomer substrate is selected from the group consisting of silver-filled silicone, carbon-filled silicone, gold-filled silicone, carbon-filled polyurethane, and conjugated silicone; a wire guide shaft defining a wire guide lumen, the wire guide shaft having proximal and distal ends, wherein the proximal end of the wire guide shaft is distal to the balloon distal end; and a catheter tip having tip proximal and tip distal ends, wherein the distal end of the inflation lumen opens into and is in communication with an interior of the inflatable balloon, the balloon distal end is sealed by the tip proximal end, and the wire guide shaft is coupled only to the catheter tip completely distally of the balloon distal end.
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12. A balloon catheter comprising:
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an elongate, flexible, tubular body; and an inflatable balloon on the tubular body, wherein the balloon has a balloon surface, a proximal end and a distal end; and a conductive elastomer electrode means coated onto the balloon surface of said inflatable balloon, wherein the conductive elastomer electrode means comprises an elastic polymer that is electrically conductive. - View Dependent Claims (13, 14, 15, 16)
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Specification