A fastener assembly that can be used for the fixation or anchoring of orthopedic devices or instruments to bone tissue. Here, a high voltage is supplied to one of the first and second junctions, and a turn-off voltage is supplied to a gate of the second transistor. Any objects in the path of the reciprocator are detected by contact with the safety bar. A signal dependent from the electric signal is weighed by the patterned distance signal to generate an output signal representing the acoustical signal. According to at least one embodiment of the present invention, an image sensor pixel includes a lateral photodiode element and a vertical overflow drain system for draining excessive charges accumulated in the charge collecting region of the lateral photodiode element and for resetting the charge collecting region of the lateral photodiode element. After a pre-selected period, the network interface of the target accesses the associated memory location and provides the current value of the parameter to the MetaServer.