US 4,559,038 AGranted

Drug delivery system

AssigneeDeltec Systems, Inc.

InventorsHarvey F. Berg, Lyle Peterson, James E. Leslie

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Abstract

A system for delivering a drug to a patient according to the preferred embodiment of the present invention is shown as being of modular construction including a control module and a reservoir module. The reservoir module is removably secured to the control module by a removable hinge member at one end and a locking member at the other end. The reservoir module includes a pressure plate upon which a tube extending from a drug container bag to the patient is supported. The control module includes a pumping mechanism including a camshaft which reciprocates valves and an expulsor in the control module. The valves and expulsor engage and interact with the tube located on the pressure plate for forcing the drug from the drug container bag to the patient. In its most preferred form, the pressure plate includes standoffs which abut with the pump chassis for insuring proper spacing maintenance between the pressure plate of the reservoir module and the control module. The cam shaft is driven by a motor controlled by electronic controls included in the control module which may be preprogrammed to deliver a precise amount of drug over a specific period of time. The drug delivery system of the present invention may be removably secured to the patient allowing the patient to be ambulatory while being administered drugs.

Claims21

Dependent claims

Modular system for delivering a drug to a patient comprising, in combination:

a reservoir module, with the reservoir module comprising, in combination:
a container for storing a drug to be delivered by the system, a tube for providing communication between the drug storage container and the patient, and a pressure plate, with the communication providing tube being located and supported on the pressure plate;
a control module, with the control module comprising, in combination:
a chassis including a first aperture and second and third apertures located on opposite sides of the first aperture;
a camshaft rotatably mounted to the chassis having a first cam portion and second and third cam portions located on opposite sides of the first cam portion;
an expulsor reciprocably mounted in the first aperture of the chassis for engagement with the first cam portion and for interaction with the communication providing tube;
first and second valves reciprocably mounted in the second and third apertures of the chassis for engagement with the second and third cam portions and for interaction with the communication providing tube, and means for rotating the camshaft for reciprocating the expulsor and valves in the apertures of the chassis;
means for removably securing the pressure plate of the reservoir module to the chassis of the control module, with the expulsor and the valves of the control module interacting with the communication providing tube on the pressure plate of the reservoir module when the reservoir module is removably secured to the control module for forcing the drug stored in the drug storage container through the communication providing tube at desired rates to the patient.

5 more elements

Dependencies are inferred from the claim text.