Method and apparatus for application of a neural stimulus
AssigneeSaluda Medical Pty Ltd
InventorsJohn Louis Parker, James Hamilton Wah
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Abstract
A method of applying a neural stimulus with an implanted electrode array involves applying a sequence of stimuli configured to yield a therapeutic effect while suppressing psychophysical side effects. The stimuli sequence is configured such that a first stimulus recruits a portion of the fibre population, and a second stimulus is delivered within the refractory period following the first stimulus and the second stimulus being configured to recruit a further portion of the fibre population. Using an electrode array and suitable relative timing of the stimuli, ascending or descending volleys of evoked responses can be selectively synchronised or desynchronised to give directional control over responses evoked.
Claims25
(canceled)
A neuromodulation system comprising:
- an implantable device for suppressing pain by applying a neural stimulus, the implantable device comprising:
- a plurality of electrodes including at least one stimulus electrode and at least one sense electrode;
- a stimulus source for providing stimuli to be delivered from the at least one stimulus electrode to an electrically excitable tissue in the dorsal column of a patient;
- measurement circuitry for measuring a neural response sensed at the at least one sense electrode and evoked in response to a stimulus;
- and
- an accelerometer configured to measure one or more of orientation and movement of the implantable device;
- and
- a processor configured to program the implantable device to provide stimuli based on the measured neural response and one or more of the measured orientation and the measured movement.
A method of suppressing pain by applying a neural stimulus, the method comprising:
- delivering stimuli from at least one stimulus electrode to an electrically excitable tissue in the dorsal column of a patient;
- measuring a neural response sensed at at least one sense electrode and evoked in response to a stimulus;
- measuring one or more of orientation and movement of the stimulus electrode;
- and
- programming an implantable device to deliver the stimuli based on the measured neural response and one or more of the measured orientation and the measured movement.
Dependencies are inferred from the claim text.