Method of maintaining intensity output while adjusting pulse width or amplitude
First Claim
1. A method of operating a tissue stimulation system, comprising:
- placing at least one electrode in contact with the tissue of a patient;
applying an electrical stimulus to the at least one electrode to provide an effect, the applied electrical stimulus comprising a plurality of pulses defined by a pulse width value and an amplitude value;
adjusting one of the amplitude value and the pulse width value;
automatically adjusting the other of the amplitude value and the pulse width value in response to the adjustment of the one of the amplitude value and the pulse width value, wherein the automatically adjusting is based on a calculation that includes a chronaxie value;
determining that the effect of the electrical stimulus changes as a result of the automatic adjustment; and
adjusting the chronaxie value.
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Accused Products
Abstract
Tissue stimulation systems generally include a pulse generating device for generating electrical stimulation pulses, at least one implanted electrode for delivering the electrical stimulation pulses generated by the pulse generating device, and a programmer capable of communicating with the pulse generating device. Stimulation pulses may be defined by several parameters, such as pulse width and amplitude. In methods of stimulating the tissue with the stimulation system, a user may adjust one of the parameters such as pulse width. The programmer may automatically adjust the pulse amplitude in response to the change in pulse width in order to maintain a substantially constant effect of the stimulation pulses.
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Citations
15 Claims
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1. A method of operating a tissue stimulation system, comprising:
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placing at least one electrode in contact with the tissue of a patient; applying an electrical stimulus to the at least one electrode to provide an effect, the applied electrical stimulus comprising a plurality of pulses defined by a pulse width value and an amplitude value; adjusting one of the amplitude value and the pulse width value; automatically adjusting the other of the amplitude value and the pulse width value in response to the adjustment of the one of the amplitude value and the pulse width value, wherein the automatically adjusting is based on a calculation that includes a chronaxie value; determining that the effect of the electrical stimulus changes as a result of the automatic adjustment; and adjusting the chronaxie value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tissue stimulation system, comprising:
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a pulse generating device for generating an electrical stimulus to provide an effect in a patient, the electrical stimulus comprising a plurality of pulses defined by a pulse width value and an amplitude value; at least one electrode for delivering the electrical stimulus generated by the pulse generating device; an interface device capable of allowing a user to adjust one of the amplitude value and the pulse width value; and a programmer capable of programming the pulse generating device to control the generation of the electrical stimulus, the programmer further capable of calculating an adjustment in the other of the amplitude value and the pulse width value in response to the adjustment of the one of the amplitude value and the pulse width value, wherein the calculated adjustment is based on a calculation that includes a chronaxie value, the programmer further capable of adjusting the chronaxie value in response to a determination that the effect of the electrical stimulus changes as a result of the calculated adjustment. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification