Artificial chordae tendineae repair devices and delivery thereof
Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that include device for chordae tendineae repair. The device may include a flexible cord having a first end and a second end; and a helical wire configured to attach to one of the first end and the second end of the flexible cord and anchor the flexible cord to a leaflet of a heart valve; and a capture device having a channel and configured to clamp the leaflet of the heart valve and deliver the flexible cord through the channel to anchor the helical wire to the leaflet.
1 . A method for chordae tendineae repair, the method comprising:
capturing a leaflet of a heart valve of a patient using a capture device;
arranging a flexible cord with an anchor through the leaflet while the leaflet is captured by the capture device, wherein the anchor includes one or more grooves disposed on an inner surface of the anchor, the one or more grooves configured to grip the flexible cord such that the flexible cord is slidable through the one or more grooves in a first direction and is restrained from sliding in a second, opposite direction to thereby facilitate tension adjustment of the flexible cord;
anchoring a first end of the flexible cord within the leaflet using a helical wire; and
anchoring a second end of the flexible cord within a tissue wall of a heart of the patient.
2 . The method of claim 1 , wherein the tissue wall is a papillary muscle of a left ventricular wall of the patient, and the anchoring the second end of the flexible cord occurs prior to anchoring the first end of the flexible cord.
3 . The method of claim 1 , wherein anchoring the second end of the flexible cord includes penetrating the tissue wall with a puncture needle for insertion of an anchor coupled to the second end of the flexible cord.
4 . The method of claim 3 , wherein the capture device includes a channel configured to pass the puncture needle and the flexible cord and the puncture needle includes a lumen configured to pass the flexible cord therethrough.
5 . The method of claim 1 , wherein the capture device includes a hinge configured to open and close the capture device.
6 . A chordae tendineae repair device comprising:
a flexible cord having a first end and a second end, wherein the flexible cord includes a porous material; and
an anchor configured to attach to one of the first end and the second end of the flexible cord and anchor the flexible cord to a leaflet of a heart valve or to a tissue wall of the heart, wherein the anchor includes one or more grooves disposed on an inner surface of the anchor, the one or more grooves configured to grip the flexible cord such that the flexible cord is slidable through the one or more grooves in a first direction and is restrained from sliding in a second, opposite direction to thereby facilitate tension adjustment of the flexible cord.
7 . The device of claim 6 , wherein the anchor is self-expanding.
8 . The device of claim 6 , wherein the anchor is configured to pierce tissue.
9 . The device of claim 6 , wherein the anchor includes a plurality of leg members.
10 . The device of claim 9 , wherein the plurality of leg members are formed of a shape set material and wrapped in a fluoropolymer.
11 . The device of claim 6 , wherein the anchor includes a spur.
12 . The device of claim 6 , wherein the flexible cord and anchor are operable to be delivered through a bore of a needle or a delivery device.
13 . A delivery device for delivery of a chordae tendineae repair device, the delivery device comprising:
an elongate member including a distal end and a proximal end;
a capture device arranged at the distal end of the elongate member, the capture device operable to clamp a native leaflet, the capture device including a hinged including a hinged portion operable to facilitate movement of the capture device between an open position and a closed position;
a needle arranged in a channel of the elongate member and the capture device a chordae tendineae repair device; and
a tethering device including a second needle operable to puncture tissue in order to embed an anchor of the chordae tendineae repair device.
14 . The delivery device of claim 13 , wherein the needle is operable to move between an extended configuration and a retracted configuration.
15 . The delivery device of claim 14 , wherein, when the capture device is clamped onto a native leaflet, the capture device is operable to align the native leaflet for the needle to transition from the retracted configuration to the extended configuration in order to extend through the native leaflet to create an opening in the native leaflet.
16 . The delivery device of claim 15 , further comprising a chordae tendineae repair device, wherein the chordae tendineae repair device is arranged through a lumen of the needle.
17 . The delivery device of claim 16 , wherein the hinged portion is operable to move between an open configuration and a clamped configuration, the hinged portion including a groove operable to facilitate arrangement of the chordae tendineae repair device with the native leaflet.