MULIT-PROGRAMMABLE TRIAL STIMULATOR
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Abstract
Disclosed are systems and methods which provide trial stimulators suited for use interoperatively and during patient trial. Trial stimulator embodiments provide a patient interface and/or clinician interface which appears and functions substantially the same as an interface of a pulse generator controller which will be used after a trial period. A compliance monitor feature may be provided to facilitate verifying the proper use of the trial stimulator during a trial period. A diagnostic feature may be provided to facilitate verifying proper operation of various aspects of a trial stimulator, such as electrode impedance analysis. Trial stimulators of embodiments provide stimulation to a plurality of tissues and/or areas of the body, such as spinal cord stimulation, deep brain stimulation, etcetera. Embodiments provide for multi-electrode stimulation and multi-stimulation programs. Embodiments are configured to provide active discharge of stimulation pulses as well as to utilize constant current sources in providing the stimulation pulses.
144 Citations
16 Claims
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1-9. -9. (canceled)
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10. A trial stimulator system comprising:
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a processor for controlling the trial stimulation system under control of executable instructions, the instructions defining; (i) a patient user interface providing user control during a patient stimulation trial; and (ii) a clinician user interface providing user control during a clinician stimulation trial; and stimulation source circuitry comprising; (i) circuitry for providing constant current for output for stimulation of a patient; and (ii) a maximum voltage override circuit, coupled to the circuitry for providing, to prevent delivery of current to the patient that would cause an output voltage to exceed a maximum voltage value, wherein the processor controls the stimulation source circuitry to provide stimulation according to a multi-stimulation set program that defines multiple pulses to be interleaved, each set of the multi-stimulation set program defining independent pulse parameters including an amplitude parameter, wherein the maximum voltage override circuit is controlled by the processor to apply an independent maximum voltage value for each set of the multi-stimulation set program; wherein the processor is operable to control the stimulation source circuitry to selectively provide active discharge of capacitors for stimulation frequencies above a threshold frequency and to vary pulse widths of discharge pulses for stimulation frequencies above the threshold frequency. - View Dependent Claims (11, 12, 13, 14, 15)
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16-23. -23. (canceled)
Specification