| 摘要 |
Pen-type drug injection device and electronic add-on monitoring module for monitoring and logging dose setting and administration is described. The module comprises a main body part (205) for attachment to a main body of the injection device, an arm (207) coupled to the main body part and slidable between an extended position, in which a first end of the arm (coupled to the dosage knob (203) of the injection device) is extended away from the main body part, and a retracted position, the arm having a physical parameter that varies along its length, a sensor support, the sensor support being provided at the first end of the arm, a rotatable component sensor (209) supported on the sensor support, a sensable component (206) that is rotatable with respect to the arm and coupled to rotate together with the dosage knob, an arm parameter sensor coupled to the main body part and configured to linear extension of the arm, and a processor configured to use outputs of the rotatable component sensor and the linear arm parameter sensor to determine a dose that is dialled into the injection device based on the combination of the linear arm extension and dosage knob rotation. |
