Patent ID: 8647306
Filing Date: 2014-02-11
Classification: A61M

Abstract:
1. An injection device configured to be adjustable from a storage position to an injection position, comprising: a support housing having a distal end to be applied to a patient and a proximal end opposite the distal end, between which a longitudinal axis extends, the support housing further including: an activating sleeve at least partially surrounding the support housing and configured to be adjusted in an axial direction relative to the support housing, whereby the distal end of the support housing projects over the activating sleeve, a cartridge adapted to retain medicine to be administered in an injection procedure is mounted in the support housing, a first drive unit which is in active connection with the cartridge and the activating sleeve and can be triggered by means of the activating sleeve, a safety device, which secures the first drive unit prior to its activation by the activating sleeve for the injection procedure in position relative to the support housing, a needle arrangement, which is arranged ahead of the cartridge in the storage position of the injection device in the section of the distal end of the support housing, the needle arrangement comprising a cannula having distal and proximal needle ends arranged inside the support housing, the distal needle end being configured to pass through the opening defined by the front support housing part, a needle protection element which can be displaced from a non-active position into a position which covers the distal needle end projecting over the distal end of the support housing after the injection procedure, a second activatable drive unit, which displaces the needle protection element from the non-active position into the covering position, a seal stopper disposed in the opening defined by the front support housing part, a sealing element extending circumferentially between an external surface of the cartridge and an internal surface of the support housing in the connecting section, at least one throughput disposed in the connecting section between the front support housing part and the rear support housing part such that, in the first coupling position, there is a flow connection via the throughput between the front holding chamber and an outside of the support housing, and, in the second coupling position, the flow connection is interrupted between the front holding chamber and the outside of the support housing, wherein the needle protection element with the second drive unit cooperating therewith is arranged radially between the support housing and the activating sleeve.