HEART ASSIST DEVICE WITH EXPANDABLE IMPELLER PUMP
First Claim
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.
5 Assignments
0 Petitions
Accused Products
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.
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Citations
1 Claim
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1. An apparatus for inducing motion of a fluid relative to the apparatus, the apparatus comprising:
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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.
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Specification