Patent ID: 9468722
Filing Date: 2016-10-18
CPC Classification: A61M

Claim Text:
1. An injection device, comprising: a housing; a container holder within the housing configured for accommodating a medicament container, the medicament container having a needle attached to one end thereof and a stopper sealingly and slidably arranged inside the medicament container at the other end thereof; a drive unit, comprising a plunger rod; a plunger driver slidably arranged in relation to the plunger rod, rotationally locked to the plunger rod, and rotatable in relation to the housing; and a first energy accumulating member arranged in an interior of the housing, configured to accumulate and store energy, and operationally associated with the plunger driver; wherein the plunger driver is releasable such that due to an output torque from the first energy accumulating member, the plunger driver is enabled to be rotated and the plunger rod is urged toward a proximal end of the injection device, whereby an injection is performed; and an injection indication mechanism configured for indicating progress of the injection and comprising a tactile signaling member and a drive mechanism for driving the tactile signaling member, the drive mechanism being coupled to the plunger driver at a distal end of the plunger driver, and the injection indication mechanism being such that progress of the injection is felt by a user; wherein the tactile signaling member comprises at least one distally directed protrusion arranged to extend through at least one passage arranged in an end surface of the housing, and the drive mechanism is a rotary drive mechanism rotationally locked to the plunger driver such that rotation of the rotary drive mechanism during the injection drives the tactile signaling member in a distal direction, thereby indicating progress of the injection.