[Development and assessment of an artificial pacemaker of the ureter with feedback]

In 16 patients who had been operated on according to Andersen-Hynes an electrostimulation of the upper urinary passages was carried out. One electrode consisting of a carbon filament was induced into the pelvis of the ureter, a second one with an at least 100 times larger contact surface than in the carbon electrode was placed on the skin. When the motor activity was restored (usually on the 9th to 12th day after operation) the electrostimulation was discontinued. The advantage of the method presented consists in the fact that the electrostimulation takes place in physiologically established time intervals. The presence of a feedback allows to discontinue the electrostimulation in such cases in which the restored independent contractions of the ureter transgressed the given level of 1 mV.