Method and circuitry for measurement of stimulation current

摘要

A method and device for measuring and controlling stimulation current, for example in an implantable device, are disclosed. A series capacitor (Cb) is disposed along the conduction path, and the voltage (Uc) across the capacitor measured, so as to provide a direct measurement of the delivered stimulation current.

主权项

1. A neural stimulator, comprising:
a plurality of stimulation electrodes; at least one controllable electrical stimulator, including a current source, configured to deliver electrical stimuli via at least one of the stimulation electrodes; a capacitor disposed in series along a conduction path including the at least one stimulation electrode and the controllable electrical stimulator such that the conduction path, during delivery of the electrical stimuli, further includes the current source disposed in series with the capacitor; and a voltage measurement device configured to measure the voltage across the capacitor, said voltage providing an indication of the current operatively delivered by said at least one stimulation electrode.