Transcutaneous electrical nerve stimulation instruments; Transcutaneous electrical nerve stimulators; Electrical nerve stimulators; Nerve muscle stimulators; Surgical nerve stimulator devices; Electro-stimulation apparatus for use in therapeutic treatment; Apparatus for use in the control of incontinence; Medical appliances for use by persons suffering from incontinence; Electronic apparatus for the prevention of incontinence; Female urinary incontinence devices; Appliances for use by the incontinent; Medical electrodes; Electrophysiology electrodes; Transcutaneous electrical nerve stimulation electrodes; Consumable electrodes for medical use; Electrodes for picking up electrophysiological parameters; Electrodes for medical purposes; Electrodes for medical use