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Patient monitoring system employing array of force sensors on a bedsheet or similar substrate

  • US 6,546,813 B2
  • Filed: 02/22/2001
  • Issued: 04/15/2003
  • Est. Priority Date: 01/08/1997
  • Status: Expired due to Term
First Claim
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1. A system for sensing status of a patient in a bed comprising:

  • a replaceable laminar sensor on said bed;

    said laminar sensor having a plurality of force sensing elements distributed two-dimensionally throughout said sensor;

    processing apparatus responsive to forces sensed by said sensor for forming a spatially-weighted sum of the forces sensed by said sensor to provide a distribution of the forces throughout said laminar sensor, said processing apparatus including a near-bed processor and a central processor in communication with said near-bed processor through a communication link;

    said processing apparatus providing an indication over time of a patient status in response to said weighted average;

    wherein said communication link is a wireless link having interfaces at said near-bed processor and said central processor.

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