F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 17/00 (2006.01) A61M 1/10 (2006.01) F03B 13/00 (2006.01) F04D 13/06 (2006.01) F04D 29/24 (2006.01) F04D 29/44 (2006.01) F04D 29/62 (2006.01)
Patent
CA 2154248
A centrifugal blood pump features a pump assembly (14) including a cylindrical barrel insertable into a motor stator (12). The barrel contains a motor rotor (58) which is directly coupled to the pump's impeller (40). The barrel can be oriented and locked in the motor stator in many different angular orientations. Hemolysis is prevented in spite of high speed operation by reducing the clearance between the impeller (40) and the impeller chamber, radiusing the edges of the impeller blades, and providing a deflector to prevent blood from being impelled more than once around the impeller chamber periphery. An efficient releasable locking mechanism is also disclosed, as is a preferred method of assembling the numb assembly with close tolerances.
Le Blanc Pieter W. J. C.
Maher Timothy R.
Taylor Lynn P.
Cassan Maclean
Lifestream International Inc.
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