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US 9,533,084 B2Granted
Intravascular blood pump
AssigneeAbiomed Europe GmbH
InventorsThorsten Siess, Walid Aboulhosn
Life of this patent
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Abstract
A foldable, intravascularly insertable blood pump (10) comprises a foldable, radially delivering impeller (20) accommodated in a foldable housing or envelope (24). Axially before and behind the impeller a clearance (60) is provided between the impeller (20) and the front and back walls (32, 62) of the housing (24), the clearance being at least 0.2 mm. Preferably, the space defined between adjacent blades (54) of the impeller (20) is open towards the front wall (32) of the housing (24).
Claims15
An intravascularly insertable blood pump, comprising:
- a rotor having an axis of rotation and at least one blade arranged about the axis of rotation so as to form a radially delivering impeller,
- a flexible shaft extending through a catheter and adapted to drive the rotor, and
- a housing in which the impeller is arranged for rotation, the housing having a blood flow inlet arranged radially inwardly relative to a radially outer end of the at least one blade with respect to the axis of rotation,
- characterized in that a first axial distance between a front wall of the housing and the impeller is 0.3 mm or more.
1 more element
Dependencies are inferred from the claim text.