Sanofi
Dosage Measurement System

Abstract:

The present disclosure relates to a dosage measurement system for a medicament delivery device. The medicament delivery device comprises a medicament reservoir, a lead screw and a drive sleeve. The drive sleeve is rotatable to axially displace the lead screw relative to the drive sleeve to dispense medicament from the medicament reservoir. The dosage measurement system comprises a sensor unit and a processor. The sensor unit is configured to measure rotation of at least one of the drive sleeve and lead screw. The processor is configured to determine a dosage dispensed from the medicament reservoir based on the measured rotation of said at least one of the drive sleeve and lead screw.