METHOD AND SYSTEM FOR BALLOON COUNTERPULSATION DURING AORTIC VALVE REPLACEMENT

摘要

Methods and systems for regulating aortic regurgitation during aortic valve replacement or repair procedures utilize a temporary aortic valve (TAV) catheter and a controller. The temporary aortic valve catheter has an expandable occlusion device which can partially occlude the aortic lumen during ventricular diastole with a lesser occlusion during ventricular systole. Exemplary balloon structures include multiple, independently inflatable balloons which are inflated in synchrony with the cardiac cycle by the controller. By controlling aortic regurgitation, the repair or replacement protocols can be conducted with less interference from blood flow.

主权项

1. A device for regulating aortic regurgitation, said device comprising:
a tubular catheter body advancable through an ascending aorta of a subject; a first occlusion element disposed at a distal end of the catheter body; and a second occlusion element disposed at the distal end of the catheter body in parallel with the first occlusion element, wherein the first and second occlusion elements are sized to at least partially occlude the ascending aorta when positioned therein, wherein the first and second occlusion elements are independently expandable and contractable, and wherein the first occlusion element is configured to expand and contract in synchrony with diastole and systole of a cardiac cycle, respectively, while the second occlusion element is configured remain expanded through the cardiac cycle.