Medication infusion pump with flexible drive plunger

Details Medication infusion pump with flexible drive plunger Medication infusion pump with flexible drive plunger

1995-01-13

1997-06-10

Brown, Michael A.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604154, 604224, A61M 520

Patent

active

056370954

ABSTRACT:
A medication infusion pump is provided for controlled delivery of medication to a patient, wherein the pump includes a space-efficient flexible drive plunger for advancing a piston within a medication-containing syringe or cartridge for administration of the medication to a patient. The infusion pump comprises a compact housing defining a syringe chamber for receiving and supporting the barrel of a medication-containing syringe or cartridge having a nose end adapted for luer connection to catheter tubing through which the medication is delivered to the patient. An open rear end of the syringe barrel carries a piston which can be advanced in a controlled manner to dispense the medication. In the preferred form, the flexible drive plunger comprises a spring tape with a free end adapted for removable connection to the piston. The spring tape extends within the pump housing through a space-efficient curved path and is associated with a pump drive motor for advancing the piston within the syringe barrel to deliver the medication to the patient.

REFERENCES:
patent: 4276878 (1981-07-01), Storz
patent: 4298000 (1981-11-01), Thill
patent: 4313439 (1982-02-01), Bubb
patent: 4381006 (1983-04-01), Genese
patent: 4493704 (1985-01-01), Beard et al.
patent: 4676122 (1987-06-01), Szabo
patent: 5064098 (1991-11-01), Hutter, III et al.

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