Abstract: The safety and reliability of drug delivery systems are improved by the use of smartphones for calculating safety critical delivery parameters. A drug delivery device is adapted to perform a drug delivery operation based on an unconfirmed drug delivery instructions determined by a processing unit of a control device by applying a basic mathematic operation to control device input data. The drug delivery device comprises a communication module to receive, from the control device, the basic mathematic operation and the control device input data, and a redundancy module to determine a redundant drug delivery instructions by applying the basic mathematic operation to the control device input data received from the control device. The drug delivery device is adapted to prevent execution of the drug delivery operation if the unconfirmed drug delivery instructions and the redundant drug delivery instructions are found, by a comparator module, to conflict.

Abstract: The safety and reliability of drug delivery systems are improved by the use of smartphones for calculating safety critical delivery parameters. A drug delivery device is adapted to perform a drug delivery operation based on an unconfirmed drug delivery instructions determined by a processing unit of a control device by applying a basic mathematic operation to control device input data. The drug delivery device comprises a communication module to receive, from the control device, the basic mathematic operation and the control device input data, and a redundancy module to determine a redundant drug delivery instructions by applying the basic mathematic operation to the control device input data received from the control device. The drug delivery device is adapted to prevent execution of the drug delivery operation if the unconfirmed drug delivery instructions and the redundant drug delivery instructions are found, by a comparator module, to conflict.

Abstract: A device and a method for controlling a medical administering apparatus wherein an electrical motor of the medical administering apparatus is activated during defined discharging events, including short discharging events, and the motor is controlled as per a predefined speed profile with a plurality of regions (Pi), wherein a load sensor establishes load signals (Imot) that constitute a measure of the electrical load formed by the motor, e.g. load signals representing the motor current, wherein a monitoring arrangement compares a variable derived from the load signals with at least one predefined condition and emits an occlusion signal if the condition is satisfied, and wherein to compensate for acceleration effects, the load signals are corrected as a function of the current region by an associated correction value (I1; I2; I3), thereby facilitating reliable recognition of occlusions during short discharging events.