A HUMAN NECESSITIES
A61 MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61N ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
A61N1/00 Electrotherapy; Circuits therefor
A61N1/18 Applying electric currents by contact electrodes
A61N1/32 alternating or intermittent currents
A61N1/362 Heart stimulators
A61N1/3627 for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy