The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1995
Filed:
Nov. 12, 1993
Katsumi Takahashi, Koga, JP;
Hiroshi Sasagawa, Koga, JP;
Urawa Kohgyo Co., Ltd., Kuki, JP;
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.