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Electronic urine monitor

  • US 5,891,051 A
  • Filed: 06/02/1995
  • Issued: 04/06/1999
  • Est. Priority Date: 06/02/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for measuring a liquid discharged from a patient'"'"'s body, comprising:

  • a housing defining a cavity, said cavity having a floor;

    a substantially rigid wall container removably positioned within said cavity, said container having a bottom wall portion supported on said floor of said cavity;

    means for introducing said discharged liquid into the interior of said container to form a pool on an interior surface of said bottom wall portion;

    a transducer mounted in said floor and engaging said bottom wall portion of said container;

    means for periodically engaging said transducer to transmit energy through said bottom wall portion and said pool;

    means for determining the time duration required for said transmitted energy to travel from said transducer means to the upper surface of said pool and back again;

    light sensor means mounted on said housing adjacent said cavity for projecting a beam of light and for receiving a reflected beam of light;

    a reflective surface on said container disposed when said container is positioned within said cavity so as to reflect said projected light beam back toward said light sensor means; and

    means for detecting whether said light sensor is receiving said reflected beam of light and for providing an indication if said reflected beam is not detected;

    whereby said light sensor receives said reflected beam of light only when a container is positioned within said cavity.

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