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Locking mechanism for a drug delivery system

  • US 4,565,542 A
  • Filed: 10/19/1984
  • Issued: 01/21/1986
  • 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 control module;

    a reservoir module;

    means for removably attaching the reservoir module to the control module along one end, with the removably attaching means having a first position wherein the reservoir module and the control module are separable from each other and a second position wherein the reservoir module and the control module, are interconnected and nonseparable from each other;

    a locking mechanism for holding the reservoir module and the control module in their second position;

    with the reservoir module comprising, in combination;

    a container for storing a drug to be delivered by the system, and means for providing communication between the drug storage container and the patient;

    with the control module comprising, in combination;

    means for forcing the drug stored in the drug storage container through the communication providing means at desired rates to the patient, with the drug forcing means of the control module interacting with the communication providing means of the reservoir module when the reservoir module is removably secured to the control module for purposes of delivering a drug stored in the drug storage container to the patient at desired rates;

    with the locking mechanism comprising, in combination;

    a latch button having a longitudinal axis and a portion eccentric to the longitudinal axis;

    means for rotatably and slideably mounting the latch button about the longitudinal axis in the control module;

    means for limiting the slideable movement of the latch button in the control module in a first direction;

    a locking bolt, with the locking bolt being rotatably received on the eccentric portion of the latch button;

    means for preventing slideable movement of the locking bolt with respect to the latch button;

    means for preventing the locking bolt from rotating with the latch button and for allowing slideable movement of the locking bolt with the latch button;

    means for biasing the latch button in a second direction opposite to the first direction; and

    means connected to the reservoir module for engaging with the locking bolt with the latch button having a first position wherein the locking bolt does not engage with the engaging means of the reservoir module, a second, longitudinal position located longitudinally in the first direction from the first position, and a third, rotated position located longitudinally in the first direction from the first position and in a rotated position from the first and second positions allowing the locking bolt to engage with and place a force on the engaging means of the reservoir module.

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