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;
control logic configured to provide the first and second stimulation parameters to the source and sink circuitry, wherein the first and second stimulation parameters define a group of a plurality of pulses, and wherein the plurality of pulses have a first frequency of greater than or equal to 2,000 Hz within the group,wherein the first and second stimulation parameters define a periodic application of the group at a second frequency that results in a time between consecutive applications of the group during which the pulses are not active.
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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.
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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; control logic configured to provide the first and second stimulation parameters to the source and sink circuitry, wherein the first and second stimulation parameters define a group of a plurality of pulses, and wherein the plurality of pulses have a first frequency of greater than or equal to 2,000 Hz within the group, wherein the first and second stimulation parameters define a periodic application of the group at a second frequency that results in a time between consecutive applications of the group during which the pulses are not active. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. 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; control logic configured to provide the first and second stimulation parameters to the source and sink circuitry, wherein the first and second stimulation parameters define a group of a plurality of pulses, and wherein the plurality of pulses have a first frequency of greater than or equal to 2,000 Hz within the group, wherein the first and second stimulation parameters define the group within a single timing channel.
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18. 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; control logic configured to provide the first and second stimulation parameters to the source and sink circuitry, wherein the first and second stimulation parameters define a group of a plurality of pulses, and wherein the plurality of pulses have a first frequency of greater than or equal to 2,000 Hz within the group, wherein the plurality of pulses in the group are either only anodic or only cathodic.
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Specification