Patent ID: 11944439
Assignee: SALUDA MEDICAL PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A method for measuring a neural response to a stimulus, the method comprising:
providing a plurality of implantable electrodes including a nominal stimulus electrode, a nominal stimulus return electrode, a nominal feedback sense electrode, at least one nominal measurement electrode, and a nominal compensation electrode, the electrodes being implanted proximal to a neural tissue and being in electrical contact with the neural tissue;
applying an electrical stimulus to the neural tissue from the nominal stimulus electrode by:
delivering to the neural tissue via the nominal stimulus electrode a first current produced by a first current source; and
extracting from the neural tissue via the nominal stimulus return electrode a second current drawn by a second current source, the second current source being matched with the first current source;

connecting the nominal compensation electrode to an output of a feedback amplifier such that the feedback amplifier drives the neural tissue via the nominal compensation electrode to a desired electrical value in a feedback arrangement so as to drive the neural tissue to an altered electrical condition for neural response measurement; and
obtaining a measurement of a neural response of the neural tissue to the electrical stimulus from the at least one nominal measurement electrode during the altered electrical condition of the neural tissue.