HEART ASSIST DEVICE WITH EXPANDABLE IMPELLER PUMP

• US 20130066140A1
• Filed: 09/14/2012
• Published: 03/14/2013
• Est. Priority Date: 09/17/2004
• Status: Active Grant

• Current Assignee: TC1 LLC (Abbott Laboratories Incorporated), Penn State Research Foundation, Thoratec LLC
• Original Assignee: Penn State Research Foundation, Thoratec LLC
• Inventors: McBride, Mark W., Boger, David A., Campbell, Robert L., Dillon, Gregory P., Hambric, Stephen A., Kunz, Robert F., Leschinsky, Boris, Mallison, Thomas M., Runt, James P., Walsh, Justin M.
• Granted Patent: US 9,364,593 B2
• Time in Patent Office: Days
• US Class Current: 600/16
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 60/13 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/174 discharging the blood to the ventricle or arterial system via a cannula internal to the ventricle or arterial system
• CPC Class Codes: A61M 60/237 the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/806 Vanes or blades
• CPC Class Codes: A61M 60/808 specially adapted for deformable impellers, e.g. expandable impellers
• CPC Class Codes: A61M 60/824 Hydrodynamic or fluid film bearings
• CPC Class Codes: A61M 60/829 having a purge fluid supply
• CPC Class Codes: A61M 60/865 Devices for guiding or inserting pumps or pumping devices into the patient's body
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: F04D 29/181 Axial flow rotors F04D29/185 take precedence
• CPC Class Codes: F04D 29/247 elastic or self-adjusting
• CPC Class Codes: F04D 29/528 especially adapted for liquid pumps
• CPC Class Codes: F04D 29/542 Bladed diffusers fixing blades to stators F01D9/042
• CPC Class Codes: F04D 3/00 Axial-flow pumps priming or boosting F04D9/00
• CPC Class Codes: F04D 3/02 of screw type
• CPC Class Codes: F05B 2240/311 flexible or elastic
• CPC Class Codes: F05B 2280/5001 Elasticity

Abstract

An impeller includes a hub and a 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 blood, and 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.

Claims

1. An apparatus for inducing motion of a fluid relative to the apparatus, the apparatus comprising:

an elongated cannula having a proximal portion and a distal portion, the distal portion including an expandable cannula having a mesh; and

an impeller positioned in the elongated cannula.