Short pulse width stimulation
First Claim
1. A method, comprising:
- generating a modulation field using a first stimulus pulse with a first pulse width and determining a first reference data point that represents a modulation intensity generated using the first pulse width that provides a known response, wherein the known response includes a response selected from the group of responses including a patient report or a measurable physiological parameter;
generating the modulation field using a second stimulus pulse with a second pulse width different from the first pulse width and determining a second reference data point that represents a modulation intensity of the modulation field generated using the second pulse width that provides the known response; and
deriving calibration data for modulation using at least two reference data points including the first and second reference data points, wherein deriving calibration data includes deriving calibration data specific to modulation delivered using a pulse with a pulse width smaller than the first pulse width and smaller than the second pulse width.
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Abstract
A system example may include electrodes operationally positioned for use in delivering sub-perception neural modulation, a neural modulator configured to use at least some electrodes to generate a modulation field, and a feedback system configured to receive a feedback signal that a generated modulation field provides a perceived or measurable response. A control system may implement a calibration process including controlling the neural modulator to generate the modulation field using a first and second stimulus pulse with a first and second pulse width, respectively, and using the feedback system to determine a first and second reference point that represents an intensity of the modulation field generated using the first and second pulse widths, respectively, that provides the response, and deriving sub-perception calibration data specific to sub-perception modulation delivered using a sub-perception pulse with a sub-perception pulse width.
70 Citations
20 Claims
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1. A method, comprising:
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generating a modulation field using a first stimulus pulse with a first pulse width and determining a first reference data point that represents a modulation intensity generated using the first pulse width that provides a known response, wherein the known response includes a response selected from the group of responses including a patient report or a measurable physiological parameter; generating the modulation field using a second stimulus pulse with a second pulse width different from the first pulse width and determining a second reference data point that represents a modulation intensity of the modulation field generated using the second pulse width that provides the known response; and deriving calibration data for modulation using at least two reference data points including the first and second reference data points, wherein deriving calibration data includes deriving calibration data specific to modulation delivered using a pulse with a pulse width smaller than the first pulse width and smaller than the second pulse width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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generating a modulation field using a first current pulse with a first pulse width and determining a first reference amplitude for the first current pulse that provides patient-perceived modulation at a patient-perception threshold, the patient-perception threshold being a boundary below which a patient does not sense paresthesia; generating the modulation field using a second current pulse with a second pulse width different from the first pulse width and determining a second reference amplitude for the first current pulse that provides the patient-perceived modulation at the patient-perception threshold; deriving, using at least the first and second reference amplitudes, calibration data for sub-perception modulation that includes a sub-perception pulse, wherein deriving calibration data includes deriving first sub-perception calibration data specific for a first sub-perception pulse width, the first sub-perception pulse width being smaller than the first pulse width and smaller than the second pulse width; and delivering the sub-perception modulation using a stimulation parameter set determined using the calibration data, the sub-perception modulation having an intensity level below the patient-perception threshold. - View Dependent Claims (14, 15, 16)
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17. A system, comprising:
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electrodes on at least one lead configured to be operationally positioned for use in delivering neural modulation; a neural modulator configured to use active electrodes in the array of the stimulation electrodes to generate a modulation field; a feedback module configured to receive a signal that a generated modulation field provides a perceived or measurable response; and a controller operably connected to the neural modulator and the feedback module and configured to implement a calibration process including; controlling the neural modulator to generate the modulation field using a first stimulus pulse with a first pulse width and using the feedback module to determine a first reference point that represents an intensity of the modulation field generated using the first pulse width that provides the response; controlling the neural modulator to generate the modulation field using a second stimulus pulse with a second pulse width different from the first pulse width and using the feedback module to determine a second reference point that represents an intensity of the modulation field generated using the second pulse width that provides the response; and deriving sub-perception calibration data for sub-perception neural modulation using at least the first and second reference data points, wherein deriving sub-perception calibration data includes deriving sub-perception calibration data specific to sub-perception delivered using a sub-perception pulse with a sub-perception pulse width, the sub-perception pulse width being smaller than the first pulse width and smaller than the second pulse width. - View Dependent Claims (18, 19, 20)
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Specification