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Infusion pump controller

  • US 4,392,849 A
  • Filed: 07/27/1981
  • Issued: 07/12/1983
  • Est. Priority Date: 07/27/1981
  • Status: Expired due to Term
First Claim
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1. A medication introduction rate control system comprising:

  • a blood pressure monitor for monitoring a patient'"'"'s blood pressure;

    an analog to digital converter operatively connected with the monitor for producing digital monitor signals which are indicative of the patient'"'"'s blood pressure;

    a computer means for deriving from the monitor signals a rate control signal which indicates a rate of medication introduction, the computer means being operatively connected with the analog to digital converter the computer means including;

    comparing means for comparing the monitor signals with a preselected blood pressure level;

    rate of change means for periodically determining a rate of change of the monitor signals; and

    incremental rate selection means for adjusting the rate control signal in preselected increments which preselected increments are independent of a magnitude of a difference between the monitor signals and the preselected blood pressure level, the incremental rate selection means being operatively connected with the comparing means and the rate of change means, whereby the rate control signal is adjusted incrementally in response to the monitor signal and the preselected blood pressure level comparison and in response to the periodic rate of change determination;

    a latch means for temporarily storing the rate control signal, the latch means being operatively connected with the computer means.

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