PROGRAMMABLE WAVEFORM PULSES FOR AN IMPLANTABLE MEDICAL DEVICE
First Claim
1. An apparatus for generating a neurological stimulation waveform, comprising:
- a waveform generator; and
a waveform controller coupled to the waveform generator, the waveform controller configured to control the waveform generator to generate a waveform for each of a plurality of rate period intervals, wherein each of the rate period intervals is partitioned such that the waveform includes;
an interval;
a first stimulation pulse of a first polarity beginning immediately upon completion of the interval;
a time delay beginning immediately upon completion of the first stimulation pulse; and
a second stimulation pulse of a second polarity opposite the first polarity beginning immediately upon completion of the time delay, andwherein the waveform controller is further configured to cause the waveform generator to provide a passive recharge beginning immediately upon completion of the second stimulation pulse.
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Abstract
Apparatus and method provide flexibility in generating a stimulation waveform to an electrode of an Implantable Neuro Stimulator (INS). The stimulation waveform is synthesized for each rate period interval. Each rate period interval is partitioned into time intervals, during which stimulation pulses, recharging, and time duration delays may be induced. With the embodiment of the invention, a second stimulation pulse, having different electrical characteristics than a first stimulation pulse, may be generated during the rate period interval. An embodiment utilizes apparatus comprising a waveform controller and a waveform generator that are controlled by the waveform controller. The waveform controller uses waveform parameters to instruct the waveform generator to form stimulation pulses. Any of the components may be adjusted or deleted in the generation of the stimulation waveform. The embodiment enables any of the associated waveform parameters to be updated at the waveform controller in order to alter the stimulation waveform.
41 Citations
20 Claims
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1. An apparatus for generating a neurological stimulation waveform, comprising:
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a waveform generator; and a waveform controller coupled to the waveform generator, the waveform controller configured to control the waveform generator to generate a waveform for each of a plurality of rate period intervals, wherein each of the rate period intervals is partitioned such that the waveform includes; an interval; a first stimulation pulse of a first polarity beginning immediately upon completion of the interval; a time delay beginning immediately upon completion of the first stimulation pulse; and a second stimulation pulse of a second polarity opposite the first polarity beginning immediately upon completion of the time delay, and wherein the waveform controller is further configured to cause the waveform generator to provide a passive recharge beginning immediately upon completion of the second stimulation pulse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for generating a neurological stimulation waveform with an implantable medical device, the method comprising:
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generating a waveform for each of a plurality of rate period intervals, wherein each of the rate period intervals is partitioned such that the waveform includes; an interval, a first stimulation pulse of a first polarity beginning immediately upon completion of the interval, a time delay beginning immediately upon completion of the first stimulation pulse, and a second stimulation pulse of a second polarity opposite the first polarity beginning immediately upon completion of the time delay; and providing a passive recharge for each of the plurality of rate period intervals beginning immediately upon completion of the second stimulation pulse. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A computer-readable medium comprising instructions that cause a programmable processor of an implantable medical device to control generation of a waveform for each of a plurality of rate period intervals, wherein each of the rate period intervals is partitioned such that the waveform includes:
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an interval, a first stimulation pulse of a first polarity beginning immediately upon completion of the interval, a time delay beginning immediately upon completion of the first stimulation pulse, and a second stimulation pulse of a second polarity opposite the first polarity beginning immediately upon completion of the time delay, and wherein the instructions further cause the processor to control provision of a passive recharge for each of the plurality of rate period intervals beginning immediately upon completion of the second stimulation pulse. - View Dependent Claims (18, 19, 20)
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Specification