Percutaneous transcatheter repair of heart valves
Apparatus, systems, and methods are provided for repairing heart valves through percutaneous transcatheter delivery and fixation of annuloplasty rings to heart valves. An annuloplasty ring includes an outer hollow member including a plurality of segments. Adjacent segments cooperate with one another to change the outer hollow member from an elongate insertion geometry to an annular operable geometry. The annuloplasty ring also includes an internal anchor member located at least partially within the outer hollow member. The internal anchor member includes a plurality of anchors configured to attach the annuloplasty ring to tissue of a heart valve annulus. The internal anchor member is configured to move the plurality of anchors with respect to a plurality of windows in the outer hollow member to selectively deploy the plurality of anchors through the respective windows.
1. A method for percutaneous transcatheter repair of a mitral valve in a heart, the method comprising: percutaneously introducing a distal end of a first catheter into a left atrium of the heart;
inserting a segmented annuloplasty ring, attached to a second catheter, through the first catheter into the left atrium, the ring including a superelastic shape memory material that transforms the ring from an elongate insertion geometry to an annular operable geometry as the ring exits the distal end of the first catheter;
automatically rotating the ring to change a plane of the ring from a first direction that is parallel to the second catheter to a second direction that is parallel to a plane of a mitral valve annulus;
pulling a first suture, connected to the ring through the second catheter, to couple the ends of the ring together;
pulling a second suture, connected to the ring through the second catheter, to deploy a plurality of tissue anchors from the ring; and
inserting an expansion device through the first catheter into the left atrium and activating the expansion device to press the ring against an annulus of the mitral valve so as to drive the anchors into surrounding tissue.
2. The method of claim 1 , further comprising:
detaching the ring from the second catheter and the first and second sutures; and
removing the first and second catheters from the heart.
3. The method of claim 1 , wherein percutaneously introducing the distal end of the first catheter into the left atrium of the heart comprises a trans-septal approach through the inferior vena cava, right atrium, and interatrial septum into the left atrium.
4. The method of claim 1 , wherein percutaneously introducing the distal end of the first catheter into the left atrium of the heart comprises a retrograde approach through the aorta, aortic valve, left ventricle, and mitral valve into the left atrium.
5. The method of claim 1 , wherein percutaneously introducing the distal end of the first catheter into the left atrium of the heart comprises a trans-apical approach through the apex of the heart, left ventricle, and mitral valve into the left atrium.