An electrical therapy apparatus comprising at least one electrocatheter (10, 210, 310, 410), or an electro-needle, and at least one power supply device (20, 120A, 320A) capable of electrically supplying the electrocatheter or electro-needle with at least one current suitable for carrying out at least one therapy, wherein the apparatus further comprises at least one system (90) for testing whether at least one desired point of application of the electrocatheter or the electro-needle has been reached (10, 210 , 310, 410) in the body of a patient, the test system comprising at least one device for emitting an electric test current (20, 120A, 320B) with which to electrically feed the electrocatheter (10, 210, 310, 410) or the electro-needle before the start of therapy, and at least one reading device, capable of providing at least one reading (60) of at least one response generated in the patient (66) by electrostimulation of the nervous system or central with the electrocatheter (10, 210, 310, 410) or the electro-needle through the test current, and characterized in that the test system comprises a plurality of sensors (18) for muscle contraction, to be arranged on the the patient's skin in a predetermined position corresponding to the points where it is possible to read an evoked potential as a consequence of the ganglion stimulation that constitutes the objective of subsequent therapy, the read evoked potential is a muscle contraction and is translated by the sensors to an electrical signal, said test system comprises a data processing device (120C) capable of relating the test current and the response reading, generating at least one target reached signal, and a green light signal (60 ) for the beginning of therapy, when the relationship reaches a predetermined situation, the processing device analyzes and also relates to the time it leads the patient to generate the response to the test stream.Un aparato para terapias eléctricas que comprende al menos un electrocat
