Sanofi
Rotation Sensor for an Injection Device

Abstract:

The present disclosure relates to a rotation sensor for an injection device, the rotation sensor comprising: a rotatable element configured for a mechanical engagement with a ratchet mechanism, the rotatable element comprising an outer rim and a hub is configured for transmission of a torque between the outer rim and the hub, at least one sensor attached to the rotatable element and configured to measure at least one of a mechanical force, a mechanical pressure or a mechanical strain at a portion of the rotatable element during a rotation of the rotatable element, a processor connected to the at least one sensor and configured to calculate an angle of rotation of the rotatable element on the basis of a sensor output of the at least one sensor.