Pump chamber configured to contain a residual fluid volume for inhibiting the pumping of a gas

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United States of America Patent

PATENT NO 9494150
SERIAL NO

13973630

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Abstract

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The present invention involves, in some embodiments, medical systems for pumping fluid using a medical-grade cartridge configured for use in a reusable fluid medical apparatus to move liquids through the cartridge. The cartridge includes a membrane defining a chamber. The system includes a pressure source able to be placed in pneumatic communication with the chamber to adjust gas pressure therein. The system further includes a processor configured to perform a dry integrity test based on adjustment and measurement of fluid pressures in the chamber in which neither side of the member is exposed to liquid during test to determine whether a fluid leak exists through the membrane.

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Patent Owner(s)

  • DEKA PRODUCTS LIMITED PARTNERSHIP

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bryant,, Jr Robert J Manchester, US 30 1444
Gray, Larry B Merrimack, US 348 16171
Spencer, Geoffrey P Manchester, US 43 3520

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