Balloon actuated catheter
First Claim
1. A catheter device for performing atherectomy procedures and the like within a blood vessel or other body duct comprising:
- (a) a first elongated tubular structure having an operating end for insertion into a body duct;
(b) a first expandable balloon secured to the operating end of said first tubular structure;
(c) a cutting tool mounted at the operating end of said tubular structure and disposed so that said cutting tool is radially extended as said first balloon is expanded;
(d) second and third expandable balloons rotatably connected to said first elongate tubular structure located adjacent to and on each side of said cutting tool whereby expansion of said second and third balloons isolates the region therebetween containing said cutting tool; and
(e) wherein said cutting tool is rotatable with respect to said second and third balloons to cut tissue.
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Accused Products
Abstract
A catheter device for performing atherectomy procedures and the like in which cutting blades at the distal end of the catheter are extended by the application of fluid pressure to the catheter to inflate a balloon. One or more cutting blades are attached to the end of a resilient support that maintains the blade in a retracted position until engaged by the expanding balloon to extend the blade radially outward. Specific embodiments include separate expandable balloons provided on each side of the cutting blade to isolate the operative site and separate conduits for the infusion of a flushing liquid to the operative site.
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Citations
13 Claims
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1. A catheter device for performing atherectomy procedures and the like within a blood vessel or other body duct comprising:
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(a) a first elongated tubular structure having an operating end for insertion into a body duct; (b) a first expandable balloon secured to the operating end of said first tubular structure; (c) a cutting tool mounted at the operating end of said tubular structure and disposed so that said cutting tool is radially extended as said first balloon is expanded; (d) second and third expandable balloons rotatably connected to said first elongate tubular structure located adjacent to and on each side of said cutting tool whereby expansion of said second and third balloons isolates the region therebetween containing said cutting tool; and (e) wherein said cutting tool is rotatable with respect to said second and third balloons to cut tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification