Fractionalized stimulation pulses in an implantable stimulator device
First Claim
1. An implantable medical device, comprising:
- source circuitry configured to convert first stimulation parameters into a current that is sourced to a first electrode;
sink circuitry configured to convert second stimulation parameters into a current that is sunk from a second electrode; and
control logic configured to provide the first stimulation parameters to one of the source or sink circuitry, and to provide the second stimulation parameters to the other of the source or sink circuitry,wherein the first stimulation parameters define a first group of a plurality of first pulses that occurs during a duration, wherein the plurality of first pulses have a first frequency of greater than or equal to 2,000 Hz within the first group, andwherein the second stimulation parameters define a constant current during the duration.
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Abstract
A method for configuring stimulation pulses in an implantable stimulator device having a plurality of electrodes is disclosed, which method is particularly useful in adjusting the electrodes by current steering during initialization of the device. In one aspect, a set of ideal pulses for patient therapy is determined, in which at least two of the ideal pulses are of the same polarity and are intended to be simultaneous applied to corresponding electrodes on the implantable stimulator device during an initial duration. These pulses are reconstructed into fractionalized pulses, each comprised of pulse portions. The fractionalized pulses are applied to the corresponding electrodes on the device during a final duration, but the pulse portions of the fractionalized pulses are not simultaneously applied during the final duration.
174 Citations
18 Claims
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1. An implantable medical device, comprising:
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source circuitry configured to convert first stimulation parameters into a current that is sourced to a first electrode; sink circuitry configured to convert second stimulation parameters into a current that is sunk from a second electrode; and control logic configured to provide the first stimulation parameters to one of the source or sink circuitry, and to provide the second stimulation parameters to the other of the source or sink circuitry, wherein the first stimulation parameters define a first group of a plurality of first pulses that occurs during a duration, wherein the plurality of first pulses have a first frequency of greater than or equal to 2,000 Hz within the first group, and wherein the second stimulation parameters define a constant current during the duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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providing, with control circuitry in an implantable medical device, first stimulation parameters to one of source or sink circuitry in the implantable medical device and second stimulation parameters to the other of the source or sink circuitry, wherein the first stimulation parameters define a first group of a plurality of first pulses that occurs during a duration, wherein the plurality of first pulses have a first frequency of greater than or equal to 2,000 Hz within the first group, and wherein the second stimulation parameters define a constant current during the duration; converting, with the source or sink circuitry, the first stimulation parameters into a current that is sourced to or sunk from a first electrode during the duration; and converting, with the other of the source or sink circuitry, the second stimulation parameters into the constant current that is the other of is sourced to or sunk from a second electrode during the duration. - View Dependent Claims (17, 18)
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Specification