Patent attributes
In one aspect, the present disclosure relates to a sensor for measuring at least one physical or chemical parameter of a cartridge or syringe filled with a liquid substance. In further aspects the disclosure relates to a cartridge equipped with such a sensor and a drug delivery device equipped with such a cartridge. The sensor comprises a planar flexible foil arrangeable to an outer circumference of a barrel of the cartridge or syringe. The sensor also includes at least a first and a second measuring electrode is arranged on the foil and at least a first and a second contact electrode is arranged on the foil. The sensor further comprises, processor connected to the first and to the second measurement electrodes and a transceiver arranged on the foil. The transceiver is also and connected to the processor. Additionally, the first contact electrode and the second contact electrode are connected to the processor.
