METHOD AND SYSTEM FOR TREATING VALVE STENOSIS
First Claim
Patent Images
1. A method for treating cardiac valve stenoses, said method comprising:
- positioning an expansible shell inside a stenosed cardiac valve annulus;
expanding the shell to engage a plurality of scoring elements present on an external surface of the shell against the annulus;
maintaining the shell expansion for a time sufficient for the scoring elements to disrupt the stenoses; and
contracting the shell.
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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-closing 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 distributed force to break up the stenotic material, and the cage further contributes to rapid balloon deflation allowing shortening of the treatment time.
17 Citations
16 Claims
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1. A method for treating cardiac valve stenoses, said method comprising:
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positioning an expansible shell inside a stenosed cardiac valve annulus; expanding the shell to engage a plurality of scoring elements present on an external surface of the shell against the annulus; maintaining the shell expansion for a time sufficient for the scoring elements to disrupt the stenoses; and contracting the shell. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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 scoring elements carried by 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 (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification