Surgery – Cardiac augmentation
Reexamination Certificate
2007-03-23
2010-11-30
Layno, Carl H (Department: 3766)
Surgery
Cardiac augmentation
C416S235000, C416S234000, C416S240000
Reexamination Certificate
active
07841976
ABSTRACT:
An impeller includes a hub and at least one blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as pumping blood within a patient. A blood pump may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient's body.
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International Preliminary Report on Patenta
Boger David A.
Campbell Robert L.
Dillon Gregory P.
Hambric Stephen A.
Kunz Robert F.
Behringer Luther G
Knobbe Martens Olson & Bear LLP
Layno Carl H
The Penn State Research Foundation
Thoratec Corporation
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