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Medicament infusion device

  • US 5,891,096 A
  • Filed: 08/20/1996
  • Issued: 04/06/1999
  • Est. Priority Date: 08/20/1996
  • Status: Expired due to Fees
First Claim
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1. An infusion device, comprising:

  • a housing;

    a base plate disposed within and releasably attached to the housing, said base plate being slidably movable between first and second positions;

    a biasing mechanism attached to the base plate and the housing for biasing the base plate to the second position, said biasing mechanism facilitating the movement of the base plate to the second position when the base plate is detached from the housing;

    an actuator plate disposed within the housing and slidably movable between inner and outer positions, said actuator plate being cooperatively non-attachedly engaged with the base plate in a manner wherein the movement of the base plate toward the second position facilitates the movement of the actuator plate toward the outer position, and the movement of the base plate toward the first position facilitates the movement of the actuator plate toward the inner position; and

    a lid member slidably attached to the housing in spaced relation to the actuator plate and movable between open and closed positions, said lid member, said actuator plate and said housing defining a medicament chamber when the lid member is in the closed position;

    wherein the movement of the actuator plate toward the outer position narrows the distance separating the actuator plate from the lid member thus reducing the volume of the medicament chamber, and the movement of the actuator plate toward the inner position widens the distance separating the actuator plate from the lid member thus increasing the volume of the medicament chamber.

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