powering the first signal generator 12 through a surgical procedure the implant 10 is inserted in a subcutaneous pouch in proximity of the surface of the skin of a patient while an electrode is superficially inserted in the subcutaneous space the second end of the electrode 20 thereof is connected to the sacral root via the cuff 22 the implant 10 generates continually or intermittently the tonicity signal to maintain a basic stimulation of the external urethral sphincter and the pelvic floor muscle the tonicity signal requires a minimum of energy from the battery 13 in the implant 10 to activate bladder voiding the patient holds the external controller 26 and puts it close to the skin area of the body covering the implant 10 the patient then activates the manual switch 34 of the external controller 26 a control signal is generated by the processing unit 36 of the external controller 26 which is transmitted by radiofrequency electromagnetic coupling from the transmitting coil 30 to the receiving coil 16 in the implant 10 upon receiving the control signal the voiding signal generator generates a combined fes waveform as described above which is transmitted through the electrode 22 to the sacral nerve the high frequency waveform of the voiding signal inhibits the somatic.