Tissue stimulating device

Abstract

Abstract In a prior art device for tissue stimulation the stimulation sensitivity is first found so that the stimulation energy can be matched thereto by adjusting the stimulation energy in steps until a change from a reaction by the tissue to stimulation into a cessation of such reaction or $i(vice versa) is detected; then stimulation is applied at an energy which is higher by a safety factor than the sensitivity found. In order to obtain a safety factor E0? expressible in volts with the lowest possible power consumption, in finding the stimulation sensitivity (42) stimulation pulses are generated at an amplitude whose voltage (U) is lower than the available voltage (U0?) of a source by a voltage (US) corresponding to the safety factor (E0?) and the pulse duration (t1?, T6?) is altered. Finally stimulation is applied with the pulse duration (t1?, t6?) found and a pulse amplitude (U) corresponding to the available voltage U0?. The novel device is preferably a heart pacemaker.

Inventors

• 👤 Nils HOLMSTRÖM

Bibliographic Details