Patent ID: 8636000

Claim:
A drug dispenser device comprising: a housing which comprises an outlet for insertion into a body cavity of a patient, a drug discharge device in the housing comprising a container for storing a drug formulation to be dispensed and a discharge mechanism for discharge of said drug formulation from said container to said outlet, the drug discharge device disposed in the housing such that the discharge mechanism is held stationary and the container is movable in a first direction relative to the discharge mechanism to put the device in a discharge mode where the formulation is discharged from the container to the outlet; and a catapult arrangement for catapulting the container in the first direction relative to the discharge mechanism comprising a first part attached to the container, a second part connected to the first part so that the first and second parts are movable towards and away from each other, a biasing mechanism comprising two springs spaced apart from each other and located on each side of the first and second parts for biasing the first and second parts to a resting configuration thereof, a latch adapted in use to latch the first part against movement in the first direction when the second part is moved away from the first part in said first direction against the biasing force, and a latch release adapted for releasing the latch, when the second part has moved a predetermined distance from the first part in the first direction, to enable the biasing force to move the first part in the first direction towards the second part and carry the container in the first direction relative to the discharge mechanism to put the drug discharge device in its discharge mode; wherein the latch does not latch the first part against movement in the first direction until the first part has moved a predetermined distance from the resting configuration in said first direction, such that the latch is unstressed when the first and second parts are in the resting configuration.