Devices and methods for heart valve repair
Methods and devices provide constriction of a heart valve annulus to treat cardiac valve regurgitation and other conditions. Embodiments typically include a device for attaching a cinching or tightening apparatus to a heart valve annulus to reduce the circumference of the annulus, thus reducing valve regurgitation. Tightening devices may include multiple tethered clips, multiple untethered crimping clips, stabilizing devices, visualization devices, and the like. In one embodiment, a plurality of tethered clips is secured circumferentially to a valve annulus, and the tether coupling the clips is cinched to reduce the circumference of at least a portion of the annulus. Methods and devices may be used in open heart surgical procedures, minimally invasive procedures, catheter-based procedures, and/or procedures on beating hearts or stopped hearts.
1. A system comprising:
a device for applying tethered clips to an annulus, the device comprising:
a shaft having a proximal end and a distal end;
a plurality of clips slidably coupled to a tether, the tethered clips delivered by the shaft;
a clip applier at or near the distal end of the shaft for securing the clips to the annulus; and
at least one actuator at or near the proximal end of the shaft for causing the device to advance the clips and for activating the clip applier to secure the clips to the annulus; and
a stabilization device comprising a pair of rings which are adapted to clamp opposed faces of the annular surface.
2. A device as in claim 1 , wherein the clip applier comprises:
a pusher coupled with the actuator for advancing the clips; and
at least one slot in an inner surface of the shaft for guiding the clips.
3. A device as in claim 1 , wherein the at least one actuator is selected from the group consisting of a trigger, a handle, a plunger, a squeeze-activated device, a syringe-grip device and a foot-operated device.
4. A device as in claim 1 , wherein each of the plurality of clips includes at least one eyelet, and the tether passes through the at least one eyelet of each clip.
5. A device as in claim 1 , wherein the shaft is introducible into a patient through a minimally invasive incision.
6. A device as in claim 1 , wherein the tether is selected from the group consisting of a suture material, a Teflon strip, a band, a filament, a wire and a strap.
7. A system as in claim 1 , wherein the device is adapted to clam over and under a heart valve annulus.