Cardiac valve annulus reduction system
First Claim
1-1. The device of claim 1 wherein the filament is a hollow tube.
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Accused Products
Abstract
A catheter-based, annulus reduction device and system for cardiac valve repair and method of using the same. The system is usable for treating mitral valve regurgitation and comprises a catheter, a reduction ring carried within the catheter, the reduction ring including a plurality of exit ports formed in a side wall of the reduction ring and filament received in the reduction ring. The filament includes a plurality of radially extendible barbs corresponding to the sidewall openings. The reduction ring carrying the filament is deployed adjacent a mitral valve annulus and the filament is translated relative to the reduction ring to deploy the barbs through the exit ports and into the annulus and to further translate the reduction ring with deployed barbs to reshape the annulus.
507 Citations
34 Claims
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1-1. The device of claim 1 wherein the filament is a hollow tube.
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3. The device of claim 2 wherein the barbs are formed integrally from the hollow tube.
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4. The device of claim 2 wherein the hollow tube has a plurality of notches to increase axial flexibility of the barb assembly.
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14. A device for treating mitral valve regurgitation, comprising:
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a reduction ring including a lumen and a plurality of openings formed in a side wall of the reduction ring;
a plurality of radially extendible barbs attached to the sidewall, wherein each of the plurality of radially extending barbs corresponds with one of the plurality of openings formed in the sidewall;
a filament received in the reduction ring lumen, the filament including a plurality of barb restraining devices for restraining the plurality of radially extending barbs when the device is in a delivery configuration, wherein the reduction ring carrying the filament is deployed adjacent a mitral valve annulus and wherein the filament is translated relative to the reduction ring to release the barbs from the restraining rings and deploy the barbs through the sidewall openings and into the annulus and further translation of the filament shapes the reduction ring with the deployed barbs to reshape the annulus.
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32. A system for treating mitral valve regurgitation, the system comprising:
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means for reducing a mitral valve annulus;
means for translating a filament relative to a reduction ring;
means for inserting a plurality of barbs through reduction ring sidewall openings and into the mitral valve annulus responsive to the translation; and
means for locking the filament relative to the reduction ring.
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33. A method for treating mitral valve regurgitation, the method comprising:
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delivering to a mitral valve an annulus reduction assembly comprising a reduction ring and filament slidably disposed there through;
deploying an annulus reduction assembly in a ring shape adjacent an annulus of the mitral valve;
deploying a plurality of barbs disposed on the filament through reduction ring sidewall openings and into the annulus; and
reforming the ring shape to reduce the valve annulus. - View Dependent Claims (34)
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Specification