Patent ID: 11864997
Assignee: EDWARDS LIFESCIENCES CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A method of positioning a prosthetic heart valve, comprising:
inserting a shaft of a delivery apparatus into a patient's vasculature using a transfemoral route, wherein a prosthetic heart valve is mounted on the shaft at a first location;
advancing the shaft and the prosthetic heart valve to a first position within the patient's vasculature;
moving the prosthetic heart valve relative to the shaft from the first location to a second location, wherein the second location comprises an inner balloon and an outer balloon radially disposed between the prosthetic heart valve and the shaft;
advancing the shaft and the prosthetic heart valve from the first position to second position;
partially inflating the inner balloon with a fluid, wherein partially inflating the inner balloon results in end portions of the inner balloon expanding radially outwardly farther than at a center portion of the inner balloon, and wherein partially inflating the inner balloon results in partial expansion of the prosthetic heart valve; and
after partially inflating the inner balloon, fully inflating the outer balloon with the fluid, wherein the fluid flows from within the inner balloon, through openings in the inner balloon, and into the outer balloon, wherein the outer balloon is sealed so as to prevent fluid from flowing out of the outer balloon into the patient's vasculature, and wherein fully inflating the outer balloon results in full expansion of the prosthetic heart valve; and
prior to fully inflating the outer balloon, inflating the inner balloon until the inner balloon burst.