Infusion systems with patient-controlled dosage features
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United States of America Patent
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Sep 4, 2001
Grant Date -
N/A
app pub date -
Apr 30, 1998
filing date -
Apr 30, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An infusion system delivers drug to the patient at a fixed rate while permitting the patient to introduce a controlled bolus dosage when needed. A pump having a bulkhead that is provided with first and second flow paths from the pump reservoir to a single outlet port. The first flow path communicates with a first flow regulator which restricts flow in the first flow path to the desired fixed rate of delivery. The second flow path communicates with a patient-operated pump incorporated into the pump housing. The patient-operated pump may be in the form of a deformable reservoir that accumulates a drug bolus which may be expelled when the reservoir is compressed by the patient's fingers. A second flow regulator may be incorporated in the drug flow path upstream of the patient-operated pumping device to restrict the dosage that may accumulate therein. Additionally, a fluid control assembly incorporating a patient-controlled pump may be used with single or dual port pumps.
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