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Intravenous infusion flow rate monitoring device

  • US 6,083,206 A
  • Filed: 09/28/1997
  • Issued: 07/04/2000
  • Est. Priority Date: 12/07/1994
  • Status: Expired due to Fees
First Claim
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1. A device for monitoring an infusion, comprising:

  • a sensor adapted for being combined with a drip cylinder to detect the presence or absence of a drop; and

    a timing and counting unit timing and counting for the drops detected by said sensor;

    said sensor comprising;

    a) a source of infa-red radiation, said source of infrared radiation functioning in pulsed mode, andb) an optical receiver, said optical receiver being activated synchronous to said source of infra-red radiation;

    c) an integrating amplifier adapted for integrating the signal from said optical receiver and for providing as an output signal a mean value amplified by an adjustable factor; and

    d) a comparator adapted for comparing said output signal with the non-integrated signal from said receiver and for generating a logic signal as an input signal for said timing and counting unit.

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