Drug delivery device

摘要

The invention relates to a drug delivery device, comprising:
a case for retaining drug container, the drug container defining a cavity for containing a drug, wherein a stopper is slidably disposed within the container so as to displace the drug through a discharge nozzle on translation in a distal direction,an inner magnet disposable within the drug container for abutting the stopper,at least one outer magnet disposed within the case coaxially with the container and slidable in an axial direction,a trigger arrangement for advancing the outer magnet in a distal direction on actuation,wherein the outer magnet and inner magnet are arranged for magnetically interacting through the drug container wall such the outer magnet advances the inner magnet on trigger actuation.

主权项

1. Drug delivery device, comprising:
a drug container, the drug container defining a cavity for containing a drug, wherein a stopper is slidably disposed within the container so as to displace the drug through a discharge nozzle on translation in a distal direction, a case for retaining the drug container, an inner magnet disposable within the drug container for abutting the stopper, at least one outer magnet disposed within the case coaxially with the container and slidable in an axial direction, a trigger arrangement for advancing the outer magnet in a distal direction on actuation, wherein the outer magnet and the inner magnet are arranged for magnetically interacting through the drug container wall such the outer magnet advances the inner magnet on trigger actuation, characterized in that a cord with a low flexibility is arranged between a proximal face of the inner magnet and the outer magnet so as to define their relative axial position, and wherein the cord runs from the inner magnet in the proximal direction through a deviating point in a proximal rear cover of the case, then back in the distal direction and through another deviating point in a distal front cover and again in the proximal direction to the outer magnet.