Method and apparatus for transvascular implantation of neo chordae tendinae
First Claim
1. A method of transvascular prosthetic chordae tendinae implantation, comprising the steps of:
- Advancing a catheter into the left atrium, through the mitral valve, and into the left ventricle;
Deploying a ventricular anchor from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter;
Advancing a leaflet anchor into a mitral valve leaflet from the left ventricle to secure the mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter wherein advancing a leaflet anchor comprises positioning a needle guide in contact with the leaflet by deflecting a distal portion of the needle guide through an angle of at least about 160 degrees to position a distal end of the needle guide against the ventricle side of the leaflet, and advancing a needle from the needle guide and through the leaflet, wherein the needle guide comprises a slotted tube and deflecting the needle guide is accomplished by proximally retracting a pull wire; and
Securing the leaflet suture to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium.
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Abstract
Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium, through the mitral valve, and into the left ventricle. A ventricular anchor is deployed from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter. A leaflet anchor is deployed to secure a mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter. The leaflet suture is secured to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. Also disclosed is an assembled in situ mitral valve leaflet restraint, having a neo papillary muscle and a neo chordae tendinea.
79 Citations
15 Claims
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1. A method of transvascular prosthetic chordae tendinae implantation, comprising the steps of:
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Advancing a catheter into the left atrium, through the mitral valve, and into the left ventricle; Deploying a ventricular anchor from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter; Advancing a leaflet anchor into a mitral valve leaflet from the left ventricle to secure the mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter wherein advancing a leaflet anchor comprises positioning a needle guide in contact with the leaflet by deflecting a distal portion of the needle guide through an angle of at least about 160 degrees to position a distal end of the needle guide against the ventricle side of the leaflet, and advancing a needle from the needle guide and through the leaflet, wherein the needle guide comprises a slotted tube and deflecting the needle guide is accomplished by proximally retracting a pull wire; and Securing the leaflet suture to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification