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Drug delivery system

  • US 4,559,038 A
  • Filed: 10/19/1984
  • Issued: 12/17/1985
  • Est. Priority Date: 10/19/1984
  • Status: Expired due to Term
First Claim
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1. 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.

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