Devices, systems, and methods for reshaping a heart valve annulus
Inactive Publication Date: 2008-06-12
VENTURE LENDING & LEASING IV
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[0021]The need remains for simple, cost-effective, and less invasive devices, systems, and method
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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[0077]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 Direct Shortening of the Minor Axis of a Heart Valve Annulus
[0078]A. Intra-Atrial Implants
[0079]1. Structure
[0080]FIGS. 7A and 7B show embodiments of implants 10 sized and configured to rest at or near a heart valve annulus. In FIGS. 8 and 9, the embodiment of the implant 10 of FIG. 7A is shown resting in a mitral valve. In this arrangement (as FIGS. 8 and 9 show), the implant 10 extends along the minor axis (i.e., across the valve annulus in an anterior-to-posterior direction).
[0081]As FIGS. 8 and 9 show, the implant 10 is sized and shaped so that, in use, it applies a direct mech...
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Abstract
Devices, systems, and methods employ a heart implant structure that is sized and configured to be positioned in a left atrium above the plane of a native mitral heart valve annulus to affect mitral heart valve function. The implant structure includes a portion sized and configured to engage a wall of the left atrium above the plane of the native mitral valve annulus and to extend across the left atrium along a minor axis of the annulus.
Description
RELATED APPLICATIONS[0001]This application is a divisional of co-pending U.S. patent application Ser. No. 10 / 846,850, filed May 14, 2004, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 677,104, filed Oct. 1, 2003, and entitled “Devices, Systems, and Methods for Reshaping a Heart Valve Annulus,” which claims the benefit of 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 Serial 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 Ser. 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 Ser. No. 60 / 429,444, filed Nov. 26, 2002, and entitled “H...
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