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. 14, 1992
Filed:
Apr. 23, 1990
Kenneth O Thornton, Polk City, IA (US);
Steven J Phillips, Des Moines, IA (US);
Advanced Medical Systems, Inc., Polk City, IA (US);
Abstract
A system for pumping of fluids, particularly biological fluids such as blood, including a tubular length of magnetostrictive material. One-way valves are positioned generally in opposite ends of the tubular material. Fluid flow conduits are connected to the opposite ends of the tubular material. A magnetic field is imposed, generally by an electric coil, in a pulsed fashion to the tubular material to cause alternatingly magnetostriction and relaxation of the tubular material. This causes a reciprocating variation in the distance between the one-way valves which oppositely are opened and closed to produce a pumping action through the tubular material.