Means and method of pumping fluids, particularly biological fluids
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United States of America Patent
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Jul 14, 1992
Grant Date -
N/A
app pub date -
Apr 23, 1990
filing date -
Apr 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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