STENTED PROSTHETIC HEART VALVE DELIVERY SYSTEM HAVING AN EXPANDABLE BUMPER
First Claim
1. A delivery device for delivering a stented prosthetic heart valve to a native heart valve;
- the delivery device comprising;
an inner shaft assembly configured to retain the stented prosthetic heart valve;
a bumper secured to the inner shaft assembly so that the inner shaft assembly extends through a cavity defined by the bumper, the bumper having a distal end, a proximal end and an outer surface;
wherein the bumper has a compressed position and an expanded position; and
an outer sheath assembly slidably positioned over at least part of the inner shaft assembly;
the outer sheath assembly configured to slide distally and proximally over the bumper to sheathe and unsheathe the stented prosthetic heart valve.
1 Assignment
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Accused Products
Abstract
Delivery devices for delivery of a stented prosthetic heart valve. Various delivery devices include an outer sheath assembly including an outer sheath connected to a capsule that is advanced proximally to retain the prosthetic valve, which is secured over an inner shaft assembly of the delivery device. The delivery device further includes a bumper to provide a smooth transition of the capsule over the prosthetic valve during loading and recapture procedures. The bumper is expandable from a first position to a second position in which a distal end of the bumper is expanded to increase its diameter. The bumper can be biased in the second, expanded position so that the bumper automatically transitions to the expanded position upon retraction of the outer sheath.
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Citations
18 Claims
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1. A delivery device for delivering a stented prosthetic heart valve to a native heart valve;
- the delivery device comprising;
an inner shaft assembly configured to retain the stented prosthetic heart valve; a bumper secured to the inner shaft assembly so that the inner shaft assembly extends through a cavity defined by the bumper, the bumper having a distal end, a proximal end and an outer surface;
wherein the bumper has a compressed position and an expanded position; andan outer sheath assembly slidably positioned over at least part of the inner shaft assembly;
the outer sheath assembly configured to slide distally and proximally over the bumper to sheathe and unsheathe the stented prosthetic heart valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- the delivery device comprising;
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12. A method of recapturing a prosthetic heart valve;
- the method comprising the steps of;
providing a delivery device having the prosthetic heart valve loaded thereto; wherein the delivery device includes an outer sheath assembly positioned at least partially over an inner shaft assembly and a bumper located proximal to the loaded prosthetic heart valve; delivering a prosthetic heart valve to a location in a patient'"'"'s body; proximally retracting the outer sheath assembly in a direction proximal to the prosthetic heart valve such that at least a portion of the bumper increases in diameter; at least partially deploying the prosthetic heart valve; and distally advancing the outer sheath assembly over the bumper and over at least part of the partially deployed prosthetic heart valve. - View Dependent Claims (13, 14, 15, 16, 17, 18)
- the method comprising the steps of;
Specification