In one embodiment, a network node provides a time slotted channel hopping schedule to one or more child nodes of the network node. An appropriate recording power value at the linear velocity is obtained on the basis of reproduced signals of the plural test records in the outer peripheral test area. An electrically conducting liquid is directed along a fluid flow path 142) past a return electrode surface 138) to the target site to provide a current flow path between the target site and the return electrode. If the patient is unable to cough voluntarily, the patient is required to inhale an aerosol that stimulates a sensory innervation of the patient’s larynx, thereby causing the patient to cough. The driving mechanism is used for driving the worktables and the cutting tool assembly.