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pump |
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pumpAny device for moving liquids and gases, or compressing gases. Some pumps, such as the traditional lift pump used to raise water from wells, work by a reciprocating (up-and-down) action. Movement of a piston in a cylinder with a one-way valve creates a partial vacuum in the cylinder, thereby sucking water into it. Gear pumps, used to pump oil in a car's lubrication system, have two meshing gears that rotate inside a housing, and the teeth move the oil. Rotary pumps contain a rotor with vanes projecting from it inside a casing, sweeping the liquid round as they move. |
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| Recently, NASA engineers applied fluid dynamics and pump technology to develop a miniaturized efficient blood pump. Ventracor is a global medical device company which produces an implantable blood pump, the VentrAssist left ventricular assist device (LVAD), as therapy to improve the lives of heart failure patients and their families. The Synergy Pocket Circulatory Device is a small implantable blood pump designed to provide long-term, partial circulatory support to patients with chronic heart failure. |
blood pump
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