A closed-loop, variable-frequency, vagal-stimulation apparatus for control of ventricular rate during atrial fibrillation. In one embodiment the apparatus includes a stimulator applied to the left vagus nerve and a controller programmed to automatically and continuously adjust the vagal stimulation frequency...http://www.google.es/patents/US5916239?utm_source=gb-gplus-sharePatente US5916239 - Method and apparatus using vagal stimulation for control of ventricular rate during atrial fibrillation
Method and apparatus using vagal stimulation for control of ventricular rate ...