Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet
Patent
1993-02-01
1994-05-31
Kwon, John T.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having tangential inlet or outlet
415900, F01D 512
Patent
active
053164407
ABSTRACT:
Disclosed is a blood pump apparatus for blood components, comprising a housing forming a substantially cylindrical liquid chamber, an inlet port formed at an upper central portion of the housing and communicating with a source of blood component and the chamber, an outlet port formed in a peripheral portion of the housing and communicating with the chamber, a rotator arranged in the chamber and having an upper cover and a lower shroud, a lower surface of the upper cover being inclined such that an angle .theta. formed by the lower surface of the cover and a central axis of the inlet port is an obtuse angle, and a plurality of grooves being formed radially in the upper surface of the shroud, a projection formed at an upper central portion of the shroud and located immediately below the inlet port, bearing rotatably supporting the rotator with respect to the housing, motor for applying a rotational force to the rotator, and a plurality of liquid paths radially formed between the upper cover and the shroud to substantially uniformly distribute blood from a central portion of the rotator to a peripheral portion thereof. Each of the paths has a cross sectional area substantially constant over the entire length region or gradually diminishing in one direction.
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Artificial Organs, vol. 17, No. 7, 1993, Toshihiko Kijima et al., A Straight Path Centrifugal Blood Pump Concept in the Capiox Centrifugal Pump.
Hydrodynamical and Hemodynamical Evaluation of Rotary Blood Pumps, H. Engelhardt et al., Proceedings of the International Workshop on Rotary Bloodpumps, Vienna, 1988, pp. 76-81.
Horiuchi Kunio
Kijima Toshihiko
Oshiyama Hiroyuki
Kwon John T.
Terumo Kabushiki Kaisha
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