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    • 3. 发明公开
    • INJECTION DEVICE
    • EP3868426A1
    • 2021-08-25
    • EP21162524.9
    • 2017-12-07
    • Sanofi-Aventis Deutschland GmbH
    • KLEMM, ThomasMUELLER-PATHLE, Stephan
    • A61M5/32A61M5/315A61M5/24A61M5/31
    • In one aspect the present invention relates to an injection device for administering a dose of a liquid medicament, comprising:
      - an elongated housing (12) having a dispensing end (20) and being configured to accommodate a cartridge (1) filled with the liquid medicament,
      - a drive mechanism (5) configured to operably engage with the cartridge (1) for expelling of a dose of the medicament from the cartridge (1) via the dispensing end (20),
      - a protective cap (30) releasably attachable to the housing (12) to cover the dispensing end (20),
      - a first electronic circuit (40) attached to the protective cap (30) and electrically connected to at least a first cap electrode (32, 33, 34) arranged on the protective cap (30),
      - a second electronic circuit (60) arranged inside the housing (12), coupled to the drive mechanism (5) and electrically connected to at least a first housing electrode (62, 63, 64) that is located on the housing (12),
      - wherein the first and the second electronic circuits (40, 60) are electrically connected to each other via the at least first cap electrode (32, 33, 34) and the at least first housing electrode (62, 63, 64) that are in mutual contact when the protective cap (30) is attached to the housing (12).