Abstract: An electrode for detecting an electric biological signal, in particular an electrocardiographic signal, and having a metal conducting disk, and a rigid disk having holes and which is superimposed on and separated from the metal disk by a gap of constant thickness. A small amount of conducting liquid is poured on the electrode and settles inside all the holes and inside the gap to form a layer of conducting liquid superimposed on the metal disk and of constant thickness.

Abstract: An electrode for detecting an electric biological signal, in particular an electrocardiographic signal, and presenting a metal conducting disk and a rigid net of constant thickness and superimposed on the metal disk. A small amount of conducting fluid is poured on to and spreads throughout the net to form a layer of conducting fluid superimposed on the metal disk and presenting a constant thickness.

Abstract: An instrument for detecting an electric biological signal, and wherein a pocket casing housing an electronic circuit presents a rectangular wall fitted with two flat electrodes and a display. The electronic circuit includes an amplifier stage wherein a first operational amplifier communicates at the input with a first electric line receiving a first electric signal picked up from a first portion of the human body, and a second operational amplifier communicates at the input with a second electric line receiving a second electric signal picked up from a second portion of the human body. An inverting amplifier receives a signal equal to the average of the output signals of the first and second operational amplifiers, and is connected at the output to a signal divider for supplying the signal at the output of the inverting amplifier to the first and second electric lines.

Abstract: An armlet device with an electrode for picking up physiological electrical potentials is described.The electrode comprises, on one side, a pad which can come into contact, via a conductive paste, with the body of a patient, and on the opposite side, a contact stud connectable with a terminal connector of an electrical connection cable leading to apparatus for processing the said physiological potentials. The pad and the contact stud are supported by a body which is provided with tongues for connection to the armlet in such a way that the outer contact surfaces of the pad and the stud face towards opposite faces of the armlet.