Rotary blood pump with opposing spindle magnets, bore and drive windings

Various "contactless" bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending i...

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Bibliographische Detailangaben
Hauptverfasser:	Wampler Richard K, Lancisi David M
Format:	Patent
Sprache:	eng
Schlagworte:	BEARINGS BLASTING DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE LIGHTING MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BYUSING INERTIA OF FLUID TO BE PUMPED PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SIPHONS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Various "contactless" bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.