Product pump for an oxygen concentrator

Details Product pump for an oxygen concentrator Product pump for an oxygen concentrator

2007-02-06

2007-02-06

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Using liquified oxygen

C092S135000, C096S121000, C095S102000, C095S128000

Reexamination Certificate

active

11054512

ABSTRACT:
A product pump for pumping separated product gas from an oxygen concentrator which produces oxygen-rich product gas by utilizing a vacuum swing adsorption (VSA) process. The oxygen concentrator comprises a cartridge containing an adsorbent material for separating the product gas from ambient air, a vacuum pump which provides a vacuum source, a valve for selectively connecting the vacuum pump to the cartridge and product pump, and a reservoir. The product pump comprises a pumping chamber having a product gas inlet and a product gas outlet, a piston movable in the chamber, a vacuum inlet in the chamber on an opposite side of the piston from the product gas inlet and outlet for providing a vacuum to cause the piston to draw product gas through the product gas inlet into the chamber, and a spring for providing a spring force to force the product gas out the product gas outlet.

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Recommendations of the Fifth Oxygen Consensus Conference, 1999.
“AirSep lowers boom”, www.hmenews.com/2004.12/depts/vendors/vendors1.htm.

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