Magnetically actuated positive displacement pump

Details Magnetically actuated positive displacement pump Magnetically actuated positive displacement pump

1989-01-23

1991-04-30

Koczo, Michael

Pumps

Motor driven

Electric or magnetic motor

417417, F04B 4314

Patent

active

050113801

ABSTRACT:
A positive displacement pump is provided which is especially suited to be used as a left ventricle assist device (LVAD). The pump is electromagnetically actuated. An electromagnet produces a pulse which repels a magnet mounted in a diaphragm which forms one wall of a pumping chamber. The pumping chamber thereby constricts and fluid is expelled. The electromagnet has a reverse taper core and core cup magnet which produce a bipolar field effect upon a diaphragm magnet to cause the return of the diaphragm to its starting position, without the application of external power.

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