Devices, systems, and methods for reshaping a heart valve annulus
Inactive Publication Date: 2006-05-18
VENTURE LENDING & LEASING IV
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[0018] In the treatment of mitral valve regurgitation, diuretics and/or vasodilators can be used to help reduce the amount of blood flowing back into the left atrium. An intra-aortic balloon coun
Problems solved by technology
Valve malfunction can result from the chordae tendineae (the chords) becoming stretched, and in some cases tearing.
When a chord tears, the result is a leaflet that flails.
Also, a normally structured valve may not function properly because of an enlargement of or shape change in the valve annulus.
This condition is referred to as a dilation of the annulus and generally results from heart muscle failure.
In addition, the valve may be defective at birth or because of an acquired disease.
As a result, an undesired back flow of blood from the left ventricle into the left atrium can occur.
During subsequent ventricular
Method used
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[0076] Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention, which may be embodied in other specific structure. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.
I. Implants for Reshaping a Heart Valve Annulus
A. Overview
[0077]FIGS. 7A and 8 show an implant 10 sized and configured to rest within or near a heart valve annulus. The implant is shown in a mitral valve, and, in this arrangement, extends along the major (i.e., longest) axis above and / or along the valve annulus. The implant 10 is sized and shaped so that, in use, it applies a mechanical force along the major axis. The mechanical force serves to outwardly displace tissue (i.e., to displace tissue away from the center of the annulus) to reshape the annulus. In the illustrated embodiment (on th...
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Abstract
Devices, systems, and methods employ an implant that is sized and configured to attach to the annulus of a dysfunctional heart valve annulus. In use, the implant extends across the major axis of the annulus above and/or along the valve annulus. The implant reshapes the major axis dimension and/or other surrounding anatomic structures. The implant restores to the heart valve annulus and leaflets a more functional anatomic shape and tension. The more functional anatomic shape and tension are conducive to coaptation of the leaflets, which, in turn, reduces retrograde flow or regurgitation. The implant improves function to the valve, without surgically cinching, resecting, and/or fixing in position large portions of a dilated annulus, or without the surgical fixation of ring-like structures.
Description
RELATED APPLICATIONS [0001] This application claims the benefit of co-pending U.S. patent application Ser. No. 09 / 666,617, filed Sep. 20, 2000 and entitled “Heart Valve Annulus Device and Methods of Using Same,” which is incorporated herein by reference. This application also claims the benefit of Patent Cooperation Treaty application Ser. No. PCT / US 02 / 31376, filed Oct. 1, 2002 and entitled “Systems and Devices for Heart Valve Treatments,” which claimed the benefit of U.S. Provisional Patent Application Serial No. 60 / 326,590, filed Oct. 1, 2001, which are incorporated herein by reference. This application also claims the benefit of U.S. Provisional Application Serial No. 60 / 429,444, filed Nov. 26, 2002, and entitled “Heart Valve Remodeling Devices;” U.S. Provisional Patent Application Serial No. 60 / 429,709, filed Nov. 26, 2002, and entitled “Neo-Leaflet Medical Devices;” and U.S. Provisional Patent Application Serial No. 60 / 429,462, filed Nov. 26, 2002, and entitled “Heart Valve Le...
Claims
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