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Intermittent fluid delivery apparatus and method

  • US 5,876,370 A
  • Filed: 11/26/1997
  • Issued: 03/02/1999
  • Est. Priority Date: 10/11/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for delivering a fluid during a series of infusion intervals, consecutive infusion intervals being separated by a non-infusion interval, each infusion interval beginning at a predetermined time and having a first predetermined period, and each non-infusion interval beginning at a predetermined time and having a second predetermined period, the apparatus comprising:

  • a pump mechanism; and

    circuitry operatively connected to the pump mechanism, the circuitry being configured so that;

    if the pump is disabled during one of the infusion intervals, the circuitry will determine the length of time the pump is disabled, interrupt the infusion interval while the pump is disabled, and delay the beginning of subsequent infusion and non-infusion intervals for a length of time approximately equal to the length of time the pump is disabled; and

    if the pump is disabled and then enabled during the second predetermined period of one of the non-infusion intervals, begin the succeeding infusion interval at the predetermined beginning time.

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