Method and system for balloon counterpulsation during aortic valve replacement
AssigneeHOCOR Cardiovascular Technologies LLC
InventorPaul C. Ho
Life of this patent
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Abstract
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.
Claims19
A method for regulating retrograde aortic blood flow, comprising:
- positioning a catheter comprising a tubular body and a variable occlusion device in the ascending aorta above the sinus of Valsalva, the variable occlusion device comprising first and second expandable occlusion elements, wherein the second occlusion element is disposed in parallel with the first occlusion element about the tubular body;
- expanding the first and second occlusion elements to partially occlude the aortic lumen about the tubular body of the catheter during ventricular diastole to inhibit retrograde aortic blood flow while allowing perfusion of the coronary arteries via the sinus of Valsalva;
- and
- contracting the first occlusion element while the second occlusion element remains expanded during ventricular systole.
Dependencies are inferred from the claim text.