High resolution electrical stimulation leads
First Claim
Patent Images
1. A system for providing an electrical stimulus to surrounding tissue comprising:
- a probe with multiple electrodes forming a high resolution deep brain stimulation array;
a generator for supplying electrical signals to the electrodes to obtain a field distribution in the surrounding tissue; and
a controller configured to;
cause the generator to supply, in a first state, a first distribution of the electrical signals to the electrodes for generating a first field distribution, andcause the generator to supply, after supplying the first distribution of the electrical signals to the electrodes and in a second state after gradually changing the distribution of electrical signals from the first state, a second distribution of the electrical signals to the electrodes for generating a second field distribution,wherein the first distribution is more symmetrical with respect to the electrodes than the second distribution,wherein a sum of electrical stimulation currents generated by the electrical signals in the second state is lower than in the first state, andwherein a total power supplied to the electrodes in the first state and in the second state is substantially constant.
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Abstract
System for providing a stimulus comprising a probe with multiple electrodes each capable of providing a particular current to surrounding tissue a generator for providing to each of the electrodes the particular current a controller for controlling the generator to provide current to the electrodes to achieve a desired electrical field around the probe.
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Citations
13 Claims
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1. A system for providing an electrical stimulus to surrounding tissue comprising:
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a probe with multiple electrodes forming a high resolution deep brain stimulation array; a generator for supplying electrical signals to the electrodes to obtain a field distribution in the surrounding tissue; and a controller configured to; cause the generator to supply, in a first state, a first distribution of the electrical signals to the electrodes for generating a first field distribution, and cause the generator to supply, after supplying the first distribution of the electrical signals to the electrodes and in a second state after gradually changing the distribution of electrical signals from the first state, a second distribution of the electrical signals to the electrodes for generating a second field distribution, wherein the first distribution is more symmetrical with respect to the electrodes than the second distribution, wherein a sum of electrical stimulation currents generated by the electrical signals in the second state is lower than in the first state, and wherein a total power supplied to the electrodes in the first state and in the second state is substantially constant. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of generating an electrical stimulus for application to surrounding tissue with a probe with multiple electrodes forming a high resolution deep brain stimulation array, the method comprising:
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generating electrical signals to obtain a field distribution in the surrounding tissue; generating, in a first state, a first distribution of electrical signals for the electrodes to generate a first field distribution; and after supplying the first distribution of the electrical signals to the electrodes, generating, in a second state after gradually changing the distribution of electrical signals from the first state, a second distribution of electrical signals for the electrodes to generate a second field distribution, wherein the first distribution is more symmetrical than the second distribution, wherein a total power supplied to the electrodes in the first state and in the second state is substantially constant, and wherein a sum of electrical stimulation currents generated by the electrical signals in the second state is lower than in the first state.
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8. A system for providing an electrical stimulus to surrounding tissue comprising:
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a probe with multiple electrodes forming a high resolution deep brain stimulation array; a generator for supplying electrical signals to the electrodes to obtain a field distribution in the surrounding tissue; and a controller configured to; cause the generator to supply, in a first state, a first distribution of the electrical signals to the electrodes for generating a first field distribution, and cause the generator to supply, after supplying the first distribution of the electrical signals to the electrodes and in a second state after gradually changing the distribution of electrical signals from the first state, a second distribution of the electrical signals to the electrodes for generating a second field distribution, wherein the first distribution is more symmetrical with respect to the electrodes than the second distribution, wherein a sum of electrical stimulation currents generated by the electrical signals in the second state is lower than in the first state, wherein the controller is constructed for adjusting the electrical signals to the electrodes such that the generated field distribution gradually changes from the first field distribution in the first state into the second field distribution in the second state or the other way around, and wherein a total power supplied to the electrodes in the first state and in the second state is substantially constant. - View Dependent Claims (9, 10, 11, 12)
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13. A method of providing an electrical stimulus to surrounding tissue comprising:
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providing a probe with multiple electrodes forming a high resolution deep brain stimulation array; supplying electrical signals to the electrodes to obtain a field distribution in the surrounding tissue; providing, in a first state, a first distribution of the electrical signals to the electrodes for generating a first field distribution, and in a second state after gradually changing the distribution of electrical signals from the first state, a second distribution of the electrical signals to the electrodes for generating a second field distribution; and adjusting the electrical signals to the electrodes such that the generated field distribution gradually changes from the first field distribution in the first state into the second field distribution in the second state or the other way around, wherein the first distribution is more symmetrical with respect to the electrodes than the second distribution, wherein a sum of electrical stimulation currents generated by the electrical signals in the second state is lower than in the first state, and wherein a total power supplied to the electrodes in the first state and in the second state is substantially constant.
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Specification