Injection monitoring module

Abstract

An injection monitoring module comprises an indicator of rotational movement about a lengthwise axis; a sensor configured to contactlessly detect rotational movement of the indicator about the lengthwise axis; a processor connected to the sensor, wherein the processor is configured to receive and process signals from the sensor; wherein, in a first axial position of the injection monitoring module, the indicator of rotational movement is prevented from rotational movement about the lengthwise axis; and wherein, in a second axial position of the injection monitoring module, distinct from the first axial position, the indicator is free to corotate about the lengthwise axis along with a dose dispensing component of an injection pen system, onto which, or into which, the injection monitoring module has been mounted.

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