the disclosure describes a tube pressure sensor to measure penile tumescence which may be used in a therapeutic penile tumescence control system . the system senses penile pressure and sends the information to a stimulator that is capable of stimulation therapy to control an erectile state , thus treating sexual dysfunction or , more specifically , erectile dysfunction . measuring penile tumescence pressure is accomplished through the use of a tube placed within the urethra of the penis and attached to a module implanted within the bladder . pressure on the tube generates an electrical signal that is sent wirelessly to an implanted stimulator connected to a lead positioned near pelvic floor nerves that stimulate erections . an external device may be used to wirelessly send information to the implanted stimulator to start or stop stimulation in order for the patient to conduct normal sexual activity . in addition , pressure information and stimulation information may be recorded and reviewed by a physician for continued therapy monitoring .