Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Corporeal artificial heart – heart assist – control...
Patent
1993-11-12
1995-08-15
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Corporeal artificial heart, heart assist , control...
415900, 416223B, A61M 110, F03B 1300, F04D 700
Patent
active
054415357
ABSTRACT:
A blood pump for circulating blood by a rotor rotating in a space of a casing which is formed substantially in a flat shape and has a suction port and a discharge port, comprises a conical projecting portion provided at the central portion of the rotor, and a blade body formed continuously to a vicinity of the outer periphery of the base portion of the projecting portion, in which upper side recessed passages and lower side passages are alternately and radially formed. Base portions of the upper side recessed passages and the lower side passages are interconnected to each other by communicating passages. With this blood pump, the passages for blood are formed at either of the upper and lower gaps between the rotor and the casing, so that blood is transferred to the outer peripheral portion, thus preventing the solidification of the blood due to the stagnation thereof. This makes it possible to eliminate the problem in causing the thrombus of the peripheral blood vessels by the solidified blood permeating in the body, and in exerting adverse effects on the kidney.
REFERENCES:
patent: 3961867 (1976-06-01), Woollenweber
patent: 4599081 (1986-07-01), Cohen
patent: 4643641 (1987-02-01), Clausen et al.
patent: 5145333 (1992-09-01), Smith
patent: 5147187 (1992-09-01), Ito et al.
patent: 5316440 (1994-05-01), Kijima et al.
Sasagawa Hiroshi
Takahashi Katsumi
Fossum Laura
Isabella David
Urawa Kohgyo Co., Ltd.
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