Transcatheter heart valve leaflet plication
An apparatus for repairing a heart valve can comprises a leaflet-plicating mechanism configured to plicate a leaflet of a heart valve and a helical needle comprising a plurality of coils. The needle can be configured to implant a suture to extend helically through plicated tissue of the heart valve. The leaflet-plicating mechanism can comprise first and second leaflet-capture arms, which can be configured to move toward and away from each other between an open position and closed position. The leaflet-capture arms can be configured to plicate the leaflet as the leaflet-capture arms are moved from the open position to the closed position.
1. A method for repairing a heart valve comprising:
inserting a device carrying first and second leaflet-capture arms into a heart of a patient;
plicating a leaflet of the heart valve by engaging the leaflet with first and second leaflet-capture arms and moving the first and second leaflet-capture arms toward each other to plicate the leaflet between the first and second leaflet-capture arms, wherein engaging the leaflet with the first and second leaflet-capture arms comprises deploying leaflet-engaging members from respective shafts of the first and second leaflet-capture arms, and placing distal end portions of the leaflet-engaging members around a free edge of the leaflet;
inserting a needle into the heart;
inserting a helical portion of the needle through plicated tissue of the leaflet; and
deploying a suture from the needle to form a helically extending stitch extending through the plicated tissue.
2. The method of claim 1 , wherein when the leaflet-engaging members are deployed from respective shafts of the first and second leaflet-capture arms, the distal end portions of the leaflet-engaging members form hooks that are placed around the free edge of the leaflet.
3. The method of claim 1 , further comprising deploying a suture anchor from the needle, the suture anchor being secured to a distal end of the suture.
4. The method of claim 3 , wherein the suture anchor expands when deployed from the needle.
5. The method of claim 1 , wherein the device carrying the first and second leaflet-capture arms and the needle are advanced through the patient's vasculature to the heart.
6. The method of claim 1 , wherein the leaflet is a mitral valve leaflet.
7. The method of claim 1 , further comprising placing a suture clip on the suture.