Methods, systems and devices for cardiac valve repair
Disclosed are methods, systems, and devices for the endovascular repair of cardiac valves, particularly the atrioventricular valves which inhibit back flow of blood from a heart ventricle during contraction. The procedures described herein can be performed with interventional tools, guides and supporting catheters and other equipment introduced to the heart chambers from the patient's arterial or venous vasculature remote from the heart. The interventional tools and other equipment may be introduced percutaneously or may be introduced via a surgical cut down, and then advanced from the remote access site through the vasculature until they reach the heart.
1. A method of attaching a chordal replacement device, the method comprising:
advancing a proximal anchor into a heart;
attaching a flexible patch of the proximal anchor to the heart;
attaching a leaflet attachment device of the proximal anchor to an upper surface of a portion of a leaflet;
advancing a distal anchor of the chordal replacement device into a ventricle of the heart, the distal anchor including a balloon;
positioning the balloon at least partially into a sidewall of the ventricle; and
filling the balloon with fluid to increase tension on a flexible tether, which is coupled to and tensioned between the proximal and distal anchors,
wherein the filled balloon of the distal anchor remains at least partially within the sidewall of the ventricle.
2. The method of claim 1 , wherein the proximal anchor further comprises a mesh stent deployable within an atrium.
3. The method of claim 2 , wherein the mesh stent is coupled to a flexible rod that is configured to extend through a valve commissure and into the ventricle.
4. The method of claim 3 , wherein a distal end of the flexible rod couples to the distal anchor and is configured to provide consistent tension on the tether during a heart cycle.
5. The method of claim 3 , wherein the flexible rod has a deflectable, spring-formed shape.
6. The method of claim 3 , wherein the flexible rod is jointed.