The invention provides a compact and highly reliable motor vehicle steering device that does not require a spiral flat cable. A file made up of data blocks is received. Once the surgery has been performed, the electrosurgical device can be disassembled in the patient and removed one piece at a time, or removed as a unit. Furthermore, the hub can include an inputoutput interface for communication to computational nodes. Thus, vibration noise components of the quantities of charge generated at the first and second piezoelectric elements are cancelled out, and Coriolis components of the quantities of charge generated at the first and second piezoelectric elements are added, whereby only the Coriolis components are extracted.