Treatments for a patient with congestive heart failure
View Patent ↗The invention is directed to a minimally invasive therapeutic procedure, particularly for patients with congestive heart failure, and devices and systems for such procedures. this procedure involves providing a valved passageway through the patient's left ventricular wall at the apex of the patient's heart and advancing instruments through the valved passageway to connect the valve leaflets of the patient's heart valve, e.g. the mitral valve, in a “Bow-Tie” configuration to prevent or minimize regurgitation through the valve. Improved devices for this procedure include a minimally invasive grasping device having an inner lumen for advancing connecting members and other instruments through the device to the distal end thereof. Other improved instruments include a leaflet connector with an artificial cordae tendenae strand secured to an end of the leaflet connector. Improved devices for these procedures include a minimally invasive grasping device having an inner lumen for advancing connecting members and other instruments through the device to the distal end thereof. Other improved devices include a pacing lead implant instrument which is releasably secured by its distal end to the exposed heart wall to facilitate penetration of the pacing lead electrode into the heart wall. Other improved instruments include a leaflet connector with an artificial cordae tendenae strand secured to an end of the leaflet connector.
1. A minimally invasive system for treating a patient's heart, comprising:
a. a valve body which is configured to be secured within a passageway formed through a wall of the patient's heart which defines in part a heart chamber and which has a valve element within the valve body which allows passage of an instrument through the valve element into a chamber of the patient's heart defined in part by the heart wall without significant blood loss through the valve element;
b. a tissue grasping device which is configured to extend through the valve element within the valve body secured within the passageway in the patient's heart wall and which has at least two grasping members configured to grasp valve leaflets; and
c. a tissue connecting member to connect free edges of valve leaflets.
2. The minimally invasive system of claim 1 wherein the grasping members of the grasping device are configured to grasp free edges of valve leaflets with free edges disposed together to facilitate securing the free edges together with the connecting member.
3. The minimally invasive system of claim 1 including a stabilizing member for engaging valve leaflets and holding the leaflets in a grasping location.
4. The minimally invasive system of claim 3 wherein the stabilizing member is a balloon catheter.
5. The minimally invasive system of claim 4 wherein the balloon catheter has an inflatable balloon on a distal portion thereof.
6. The minimally invasive system of claim 5 wherein the balloon is formed of compliant or semi-compliant polymeric materials.