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Automatic injection device with a top release mechanism

DC
  • US 9,108,002 B2
  • Filed: 12/15/2011
  • Issued: 08/18/2015
  • Est. Priority Date: 01/21/2005
  • Status: Active Grant
First Claim
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1. A handheld injection device, comprising:

  • a rotatable dose setting member that is rotatable about a longitudinal axis of a housing of the injection device;

    a power reservoir, comprising a torsion spring for storing energy to expel a dose from the injection device;

    a piston rod;

    a release member, located at the most proximal portion of the device, opposite an end of the device wherein a needle may be mounted;

    the injection device, further comprising a rotatably arranged multi-component driver (36, 37, 38) having at least a part (38) that at least partly engages with at least part of a drive track of an associated piston rod, and a further part (36) being axially movable into a position disconnected from the housing thus releasing energy accumulated in the power reservoir, the further part (36) being axially movable by the user applying a force onto a generally planar surface of the release member, wherein the generally planar surface is generally perpendicular to a longitudinal direction of the piston rod in the device.

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