Back to results
US 5,921,913 AGranted
Statorless intravascular microaxial flow pump
AssigneeGuidant Corporation
InventorThorsten Siess
Life of this patent
Estimating the term…
Abstract
An intravascular microaxial pump has an integrated configuration that enables both the drive unit as well as the pumping segment to be advanced through a patient's vasculature. The device includes elements that enhance pumping efficiency and performance while minimizing shear and cavitation. Cost reduction is achieved in the reusability of certain components while a manufacturing method reduces the labor involved in the pump's assembly.
Claims8
A statorless intravascular microaxial flow pump, comprising:
- a proximally disposed cylindrical drive motor, dimensioned for insertion through a patient's vasculature and sealed to prevent an incursion thereinto of fluid being pumped;
- and
- a distally disposed cylindrical pumping segment, dimensioned for insertion through a patient's vasculature and rigidly attached to said drive motor, having an impeller rotatably disposed therein configured to pump fluid in a proximal direction over said drive motor, wherein the pump does not include a pump stator for the fluid to interact with.
A statorless intravascular microaxial flow pump, comprising:
- a proximally disposed cylindrical drive motor, dimensioned for insertion through a patient's vasculature and sealed to prevent an incursion thereinto of fluid being pumped;
- and
- a distally disposed cylindrical pumping segment, dimensioned for insertion through a patient's vasculature and rigidly attached to said drive motor having an impeller rotatably disposed therein configured to draw fluid in a distal direction over said drive motor, wherein the pump does not include a pump stator for the fluid to interact with.
Dependencies are inferred from the claim text.