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Infusion pump for use with prepackaged IV bags

  • US 5,348,539 A
  • Filed: 06/29/1993
  • Issued: 09/20/1994
  • Est. Priority Date: 06/29/1993
  • Status: Expired due to Term
First Claim
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1. An infusion pump for use with a flexible bag containing a charge of prepackaged intravenous solution, said bag having a pair of sidewalls and a dispensing port adapted for discharging the solution along a flow path through intravenous tubing for delivery to a patient, the pump comprising the combination of a housing;

  • a compartment within the housing for receiving said bag;

    an inflatable chamber having a diaphragm which at least partially envelopes the chamber;

    pressurizing means operable in a delivery mode for directing fluid under pressure into said inflatable chamber for causing said diaphragm to expand, said pressurizing means further being operable in a recovery mode for directing fluid from the inflatable chamber for enabling said diaphragm to contract; and

    means for positioning the flexible bag at a position within the compartment at which the bag sidewalls are caused to be compressed together responsive to said expansion of the diaphragm for pressurizing said charge of intravenous solution with the pressurized intravenous solution being discharged through the dispensing port.

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