Electro-therapeutic device

Claim 1

A probing and stimulating device for use with a sensitive point on the skin comprising: a housing comprising a long and flat tube of insulating material; a pair of electrodes disposed coaxially at one end of said housing, one of said electrodes forming a first center electrode having an axle shape surrounded by an insulating zone made from insulating materials, said insulating zone being thicker in the direction of radius than the diameter of a skin sensitive point, and the other of said electrodes forming a second annular electrode immediately surrounding the insulating zone in a coaxial arrangement with respect to said first center electrode; electronic circuit means for locating and stimulating the sensitive point, said electronic circuit means including a locating circuit for locating a skin sensitive point, a stimulator circuit for stimulating the skin sensitive point, and a selector switch having a first position for selecting operation of the locating circuit and a second position for selecting operation of the stimulating circuit, said locating circuit having a first lead for connecting the locating circuit to the selector switch, a second lead for connecting the locating switch to the first center electrode, and a third lead for connecting the locating circuit to the second annular electrode and to an electrical ground, said stimulating circuit having a first lead for connecting the stimulating circuit to the selector switch, a second lead for connecting the stimulating circuit to the first center electrode and a third lead for connecting the stimulating circuit to the second annular electrode and to an electrical ground, said locating circuit comprising a first lamp for indicating when the locating circuit is selected, whether the pair of electrodes are in contact with electrically low resistant skin, a second lamp for indicating, when the locating circuit is selected, alignment of the pair of electrodes with a skin sensitive point, a converter circuit connected to said second and third leads of the locating circuit and connected to said first lead through said first lamp and connected again to said first lead through said second lamp, said converter circuit comprising a first comparator for driving the first lamp when the electrodes are in contact with electrically low resistant skin, a second comparator driving the second lamp when the resistance across the electrodes drops, thereby indicating alignment with a skin sensitive point, said stimulating circuit comprising an electrically high potential pulse generator for developing a high potential peaked pulse, and a discriminating circuit for cutting off the lower level of said peaked pulse below a predetermined value, thus generating a pulse with a peaked crown of high potential for supplying to said electrodes.