×

Apparatus for the registration of drops in an infusion device

  • US 4,623,331 A
  • Filed: 12/06/1984
  • Issued: 11/18/1986
  • Est. Priority Date: 12/09/1983
  • Status: Expired due to Fees
First Claim
Patent Images

1. A drop registration apparatus for use with an infusion device having an infusion fluid reservoir, a drip chamber, and a tube in fluid communication, said apparatus comprising:

  • at least one light source;

    at least two light sensors disposed such that drops in said drip chamber fall in sequence between said light source and each of said light sensors;

    at least two detector channels respectively allocated to said light sensors, each detector channel independently generating a detector output signal when the light sensor allocated thereto senses a drop;

    a logic means having inputs connected to said detector channels for generating a logic output signal indicating proper operation of said infusion device when at least one of said detectors generates a detector output;

    a discriminator means having inputs connected to said detector channels, said discriminator means generating a discriminator output signal if a detector output signal is not received from all detector channels within a first selected time period; and

    a fault/alarm means having an input connected to said discriminator means for generating a fault/alarm signal upon receipt of said discriminator output signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×