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:
Jul. 01, 1997
Filed:
Feb. 24, 1995
Bradley P Fuhrman, Buffalo, NY (US);
Mark S Dowhy, Buffalo, NY (US);
Lynn J Hernan, Buffalo, NY (US);
The Research Foundation of State University of New York, Albany, NY (US);
Abstract
The invention comprises the use of helical propellers as pumping mechanisms, in various sizes and configurations, to improve upon present devices involving the circulation of liquid solutions between gas exchange mechanisms and subjects to which the liquid solutions are delivered. These improvements include the use of helical propellers as the primary source of fluid propulsion within the system, the use of helical propellers for supplementary fluid propulsion at points of high resistance or low pressure, and the use of reversible-flow helical propellers to achieve bi-directional variable rate flow through single lumen conduits.