Devices are provided for medical diagnostics comprising a substrate; an array of reservoirs; one or more electrodes located at least partially inside the reservoirs; a plurality of discrete reservoir caps covering openings in the plurality reservoirs; control circuitry for selectively disintegrating...http://www.google.ca/patents/US7070592?utm_source=gb-gplus-sharePatent US7070592 - Medical device with array of electrode-containing reservoirs
