CPC A61M 5/3155 (2013.01) [A61M 5/2033 (2013.01); A61M 2005/3126 (2013.01); A61M 2205/332 (2013.01); A61M 2205/3327 (2013.01); A61M 2205/3584 (2013.01); A61M 2205/52 (2013.01); A61M 2205/8206 (2013.01)] | 22 Claims |
1. A supplementary device configured to be attached to a drug delivery device, the supplementary device comprising:
a carrier interface configured to mechanically couple the supplementary device to a dosage selector of the drug delivery device;
a dial knob configured to select a dosage to be delivered by the drug delivery device;
a mechanical coupling configured to transfer a torque from the dial knob to the carrier interface when a dosage selection is made with the dial knob;
a sensor configured to output signals indicative of the transferred torque; and
a processor configured to receive the signals output from the sensor and configured to determine the selected dosage based on the received signals.
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