Sensor, cartridge and drug delivery device
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 as well as to a drug delivery device equipped with such a cartridge, wherein the sensor comprises: a planar flexible foil arrangeable to an outer circumference of a barrel of the cartridge or syringe, at least a first and a second measuring electrode arranged on said foil, and at least a first and a second contact electrode arranged on said foil, wherein the first contact electrode is connected to the first measuring electrode and wherein the second contact electrode is connected to the second measuring electrode.
1. A sensor for measuring at least one physical or chemical parameter of a medicament container containing a liquid substance, the sensor comprising:
a planar flexible foil configured to be arranged to an outer circumference of a barrel of the medicament container; and
at least a first and a second measuring electrode arranged and fixed on the planar flexible foil and configured to get in direct mechanical contact with the barrel when arranged to the outer circumference of the barrel;
wherein one of the first and the second measuring electrodes comprises a photo detector.
2. The sensor according to claim 1 , wherein the other one of the first and second electrodes comprises a light transmitting device.
3. The sensor according to claim 2 , wherein the first and the second measuring electrodes are configured to conduct optical transmission measurements of the barrel.
4. The sensor according to claim 1 , wherein the planar flexible foil is dielectric or permeable to dielectric charges.
5. The sensor according to claim 1 , wherein the planar flexible foil is transparent.
6. The sensor according to claim 1 , wherein the first and the second measurement electrodes are transparent.
7. The sensor according to claim 1 , wherein the planar flexible foil is configured to be wrapped around or to be attached to an outer circumference of a sidewall of the barrel.
8. The sensor according to claim 7 , wherein the first and the second measuring electrodes are located on an inside-facing portion of the planar flexible foil when the planar flexible foil is wrapped around the outer circumference of the sidewall of the barrel.
9. The sensor according to claim 1 , wherein the first and the second measurement electrodes are located on a common side of the planar flexible foil.
10. The sensor according to claim 1 , wherein the planar flexible foil is implemented as a label to distinguish the barrel from other identically shaped barrels.
11. The sensor according to claim 1 , wherein at least one of the first and the second measuring electrodes comprises a printed or coated conductive structure on or in the planar flexible foil.
12. The sensor according to claim 1 , further comprising a first contact electrode and a second contact electrode arranged on the planar flexible foil.
13. The sensor according to claim 12 , wherein the first contact electrode is connected to the first measuring electrode and the second contact electrode is connected to the second measuring electrode.
14. The sensor according to claim 12 , wherein the first and the second contact electrodes are configured to provide electrical contact to at least one of an electric energy supply, a processor, or a transceiver configured to provide wireless communication with an external electronic device.
15. The sensor according to claim 12 , wherein at least one of the first and second contact electrodes forms a ring-shaped contact electrode structure on the outer circumference of the barrel when the planar flexible foil is wrapped around a sidewall of the barrel.
16. The sensor according to claim 12 , wherein the first and second contact electrodes extend substantially across an entire lateral dimension of the planar flexible foil.
17. A medicament container comprising a barrel containing a medicament and a sensor wrapped around an outer circumference of a sidewall of the barrel, the sensor comprising:
a planar flexible foil configured to be arranged to an outer circumference of the barrel; and
at least a first and a second measuring electrode arranged and fixed on the planar flexible foil and configured to get in direct mechanical contact with the barrel when arranged to the outer circumference of the barrel;
wherein one of the first and the second measuring electrodes comprises a photo detector.
18. The medicament container according to claim 17 , wherein the flexible foil is arranged on the outer circumference of the barrel.
19. The medicament container according to claim 17 , wherein the medicament container comprises one of a syringe, a cartridge, a vial, an ampoule, a bottle or a flexible bag.
20. A sensor for measuring at least one physical or chemical parameter of a medicament container containing a liquid substance, the sensor comprising:
a planar flexible foil configured to be arranged to an outer circumference of a barrel of the medicament container; and
at least a first and a second measuring electrode arranged and fixed on the planar flexible foil and configured to get in direct mechanical contact with the barrel when arranged to the outer circumference of the barrel;
wherein one of the first and the second measuring electrodes comprises a light transmitting device.