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US Patent 8494349 Measuring pressure

Patent 8494349 was granted and assigned to Smith & Nephew on July, 2013 by the United States Patent and Trademark Office.

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Patent abstract

A method and apparatus are disclosed for determining a negative pressure generated by a suction pump of a topical negative pressure (TNP) system. The method includes the steps of disconnecting a drive voltage from a pump of the TNP system, determining an EMF generated by a free-wheeling element of the pump, selecting a new drive voltage for the pump and reconnecting the new drive voltage to the pump.

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