A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/10 (2006.01) F04D 1/04 (2006.01) F04D 3/02 (2006.01) F04D 13/06 (2006.01) A61M 1/12 (2006.01)
Patent
CA 2374989
A blood pump comprises a rotatable impeller shaft with an impeller blade, a cylindrical conduit, a cylindrical pump housing, a motor with a stator winding, a flow straightener, a first inlet, and a second inlet. According to a first embodiment, the rotatable impeller shaft has proximal and distal portions, the impeller blade is rigidly attached along the latter distal portion, the cylindrical conduit is adapted to contain the proximal portion of the impeller shaft, the cylindrical pump housing has proximal and distal ends and is coaxial to the conduit, the pump housing is adapted to contain the impeller blade, the cylindrical conduit extends from the proximal end of the pump housing, the motor rotates the impeller shaft, and the flow straightener is coaxial and rigidly mounted to the distal end of the pump housing. According to a second embodiment, the cylindrical conduit has proximal and distal ends, the stator winding is embedded in the conduit, the first inlet is located at the proximal end of the cylindrical conduit whereby blood flowing through this first inlet follows a first annular flow path between the conduit and the impeller shaft cooling an inside of the stator winding, the cylindrical pump housing has a proximal end, and the second inlet is located between the proximal end of the cylindrical pump housing and the distal end of the conduit whereby blood flowing through this second inlet follows a second annular flow path between the housing and the conduit cooling an outside of the stator winding.
Camarero Ricardo
Carrier Michel
Garon Andre
Pelletier Conrad
Camarero Ricardo
Cardianove Inc.
Carrier Michel
Garon Andre
Goudreau Gage Dubuc
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