Method and System for Treating Valve Stenosis
First Claim
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1. A device for treating cardiac valve stenoses, said device comprising:
- a shaft having proximal and distal ends;
an expansible shell carried on a distal region of the shaft; and
a plurality of nondeployable scoring elements coupled to said shaft but not attached to the expansible shell;
wherein the expansible shell has a length and expanded diameter selected to fully occupy an adult human cardiac valve annulus and said scoring elements have flat radially outward surfaces.
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Abstract
A valvuloplasty catheter comprises a balloon or other expansible shell which carries a plurality of scoring elements, typically formed in an elastic, self-dosing metal cage. The expansible shell and scoring elements are positioned inside an aortic or other cardiac valve, and the shell expanded to engage the scoring elements against stenotic material which covers the valve leaflets and valve annulus. The scoring elements uniformly districuted force to break up the stenotic material, and the cage further contributes to rapid balloon deflation allowing shortening of the treatment time.
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Citations
12 Claims
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1. A device for treating cardiac valve stenoses, said device comprising:
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a shaft having proximal and distal ends; an expansible shell carried on a distal region of the shaft; and a plurality of nondeployable scoring elements coupled to said shaft but not attached to the expansible shell; wherein the expansible shell has a length and expanded diameter selected to fully occupy an adult human cardiac valve annulus and said scoring elements have flat radially outward surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification