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:
Mar. 23, 2004
Filed:
Nov. 13, 2001
Applicant:
Inventors:
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61M 1/10 ;
U.S. Cl.
CPC ...
A61M 1/10 ;
Abstract
A blood pump driving device which is capable of making a blood pump free from an unbalance between loads when sucking and discharging, respectively and which makes it possible to eliminate a sensor positioned close to a patient, is made up of an oil reservoir including therein a gas chamber and a liquid chamber , an oil pump for pumping out a liquid stored in the liquid chamber of the oil reservoir to the blood pump , and a pressure accumulating chamber storing therein a gas pressure of the gas chamber of the oil reservoir by being brought into fluid communication with the gas chamber of the oil reservoir