Ambulatory infusion pump having programmable parameters
First Claim
1. A portable programmable infusion pump comprising in combination:
- means for containing a medicant;
means for evacuating said containment means;
keyboard means for programming a medicant concentration, at least one medicant delivery mode of operation and dosage data for each programmed mode, said dosage data including a total dose to be delivered over a predetermined length of time for each programmed mode;
memory means for storing a microprogram, each programmed mode, said medicant concentration and said dosage data;
processing means responsively coupled to said memory means for determining the volume of an incremental dose and for controlling the rate at which said evacuation means delivers one or more of said incremental doses during each programmed delivery mode.
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Accused Products
Abstract
A portable infusion pump for controllably supplying a programmed volume of medicant to a patient. The apparatus generally comprises a small, portable container having a keyboard for programming the mode of operation and operating parameters, whereby a microprocessor controls the pump in the various BASAL, SUPPLEMENTAL OR MANUAL dose delivery modes. The apparatus also contains a photo-coupler controlled driven lead screw assembly for controlling the stroke of the syringe plunger, whereby metered doses of the medicant are injected into the patient; display means for confirming programmed inputs; means for audibly warning of error conditions; and means for recording the total cummulative dosage delivered.
912 Citations
22 Claims
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1. A portable programmable infusion pump comprising in combination:
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means for containing a medicant; means for evacuating said containment means; keyboard means for programming a medicant concentration, at least one medicant delivery mode of operation and dosage data for each programmed mode, said dosage data including a total dose to be delivered over a predetermined length of time for each programmed mode; memory means for storing a microprogram, each programmed mode, said medicant concentration and said dosage data; processing means responsively coupled to said memory means for determining the volume of an incremental dose and for controlling the rate at which said evacuation means delivers one or more of said incremental doses during each programmed delivery mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A portable programmable infusion pump comprising:
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means for containing a medicant; means for evacuating said containment means; keyboard means for programming a plurality of medicant delivery modes of operation, one of a plurality of medicant concentrations and dosage data for each programmed delivery mode, said dosage data including a total dose to be delivered over a predetermined length of time; memory means for storing an operating microprogram, said programmed medicant concentration, said programmed medicant delivery modes and said dosage data; and processing means responsively coupled to said memory means for determining the volume of an incremental dose and a delivery rate for each programmed mode and for correspondingly controlling the rate at which said evacuation means delivers one or more of said incremental doses during each of said programmed modes. - View Dependent Claims (16, 17, 18)
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19. A portable programmable infusion pump comprising:
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a tubular syringe mounted in a patient transportable container for containing a medicant and having a plunger axially coupled thereto; driven lead screw means mounted in coaxial relation to said plunger for axially moving said plunger to and fro; keyboard means for programming a plurality of medicant delivery modes of operation, one of a plurality of medicant concentrations and dosage data for each programmed delivery mode, said dosage data including a total dose to be delivered over a predetermined length of time; memory means for storing an operating microprogram, said medicant concentration, said programmed delivery modes and said dosage data; and processing means responsively coupled to said memory means for determining an incremental dose-to-dose delivery interval for each programmed delivery mode and for correspondingly controlling said driven lead screw means so as to deliver a predetermined volume of said medicant during each dose-to-dose interval for each of said programmed modes, thereby delivering a desired dosage profile to said patient over time.
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20. An improved patient transportable, programmable infusion pump having a medicant storage chamber and means for controllably evacuating the storage chamber and delivering the medicant to a patient in response to one or more programmed medicant delivery modes, the improvement comprising:
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means for programming at least one of a plurality of medicant concentrations that may be dispensed by said infusion pump; and means responsive to said programmed medicant concentration and each of said programmed delivery modes for determining the volume of an incremental dose and a dose-to-dose interval between the delivery of each incremental dose for each of said delivery modes, and whereby said infusion pump delivers said medicant in a predetermined delivery profile over time. - View Dependent Claims (21)
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22. In an infusion pump having medicant containing means and means for producing volume controlled incremental doses of medicant, the improvement comprising:
means responsive to a plurality of initially programmed medicant delivery modes for determining a rate of delivery over time for each mode, independent of the other modes, for a plurality of incremental doses and for delivering the incremental doses of said medicant at each mode'"'"'s determined rate, whereby over time the incremental doses are delivered as a desired delivery profile.
Specification