A device and method for forming a device including electron emitters. An example balloon catheter may include a proximal shaft. These modules are: Mitochondrial Metabolic Group, Plasma and Mitochondrial Membrane Integrity Group, Nocturnal Group and, Insulin Alternative Group. Said metallic contact part is a round cap with flat contacting surface, which comprises positioning sticks on the surrounding wall, which connect to said positioning rods for making it protruding from but not contact to said case. The sensor is equipped with windings forming a transformer of which at least one primary winding opposite the magnetic circuit through which a current I to be measured is designed to enter, and at least one secondary winding opposite the magnetic circuit capable of producing a counter reaction magnetic field. A control voltage with an excitation frequency is applied, the excitation frequency substantially corresponding to the modified resonant frequency.