Clip-secured implant for heart valve
An implant includes a primary structural element, and two clips coupled to the primary structural element, on opposite lateral sides of the primary structural element from each other, each of the clips having a first clip element and a second clip element. The implant is transluminally advanced to a heart valve of a subject. The implant is coupled to leaflets of the valve (i) by, for each of the clips, closing the clip around a central part of a respective leaflet of the valve by causing deflection between the first clip element and the second clip element, thereby sandwiching the central part of the respective leaflet between the first clip element and the second clip element, and (ii) such that the leaflets form a double orifice configuration, with the primary structural element disposed between the central parts of the leaflets. Other embodiments are also described.
1. A method for use at a valve of a heart of a subject, the method comprising:
transluminally advancing, to the heart, an implant including:
a primary structural element, a central longitudinal axis of the implant passing through the primary structural element, and
two clips coupled to the primary structural element, on opposite lateral sides of the primary structural element from each other, each of the clips having a first clip element and a second clip element; and
coupling the implant to leaflets of the valve:
by, for each of the clips, closing the clip around a central part of a respective leaflet of the valve by causing deflection between the first clip element and the second clip element, thereby sandwiching the central part of the respective leaflet between the first clip element and the second clip element, and
such that the leaflets form a double orifice configuration, with the primary structural element disposed between the central parts of the leaflets and a proximal-most end of the primary structural element disposed entirely proximal to the entire first clip element and the entire second clip element of each clip.
2. The method according to claim 1 , wherein:
each of the clips has a tendency to close,
the method further comprises, for each of the clips, prior to closing the clip, holding the clip open using a respective pull wire, and
for each of the clips, closing the clip comprises releasing tension on the respective pull wire.
3. The method according to claim 1 , wherein, for each of the clips, closing the clip comprises closing the clip independently of closing the other of the clips.
4. The method according to claim 1 , wherein the clips are coupled to a downstream end of the primary structural element, and wherein transluminally advancing the implant comprises transluminally advancing the implant in which the clips are coupled to the downstream end of the primary structural element.
5. The method according to claim 1 , wherein advancing the implant to the heart comprises advancing the implant to the heart while the implant is disposed within a delivery tube, and wherein the method further comprises exposing the clips from a distal end of the delivery tube, and subsequently exposing the primary structural element from the delivery tube.
6. The method according to claim 1 , wherein the valve is a mitral valve of the heart, and wherein coupling the implant to leaflets of the valve comprises coupling the implant to leaflets of the mitral valve.
7. The method according to claim 1 , wherein:
each of the clips further includes a cuff, and
the method comprises, for each of the clips, moving the cuff over at least a portion of the second clip element such that the second clip element deflects medially.
8. The method according to claim 7 , wherein moving the cuff comprises moving the cuff by moving a control rod proximally.