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Infusion pump with different operating modes

  • US 5,683,367 A
  • Filed: 03/06/1995
  • Issued: 11/04/1997
  • Est. Priority Date: 03/06/1995
  • Status: Expired due to Fees
First Claim
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1. An infusion apparatus for infusing liquid into a patient, said infusion apparatus being compatible with a plurality of different types of cassettes which are adapted to be insertable into and removable from said infusion apparatus, said infusion apparatus comprising:

  • a housing adapted to receive a first type of cassette and a second type of cassette;

    a pump disposed in said housing and adapted to pump liquid through a conduit;

    a cassette sensor disposed in said housing, said cassette sensor being capable of determining whether said first type of cassette is inserted into said housing or said second type of cassette is inserted into said housing;

    control means for controlling the operation of said pump, said control means including means for causing a first course of control action to be taken when said first type of cassette is inserted into said housing and a second course of control action to be taken when said second type of cassette is inserted into said housing, said means for causing a first course of control action to be taken comprising;

    means for comparing a programmed infusion rate with a predetermined infusion rate; and

    means for preventing said pump from pumping liquid through said conduit if said programmed infusion rate exceeds said predetermined infusion rate.

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