Management of stimulation safety limits in a neurostimulation system
First Claim
1. A neurostimulation system for use with a plurality of electrodes implanted within a tissue region, comprising:
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
a control device configured for receiving user input to modify the set of stimulation parameters; and
controller/processor circuitry configured for, in response to the user input;
computing a charge injection metric value as a function of a physical electrode parameter and an electrical source parameter for a first set of the electrodes comprising independent contributions of the physical electrode parameter and the electrode source parameter for each electrode in the electrode set, wherein the electrode set comprises at least two electrodes;
comparing the computed charge injection metric value to a safety threshold value; and
performing a corrective action based on the comparison.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical stimulation system for use with a plurality of electrodes implanted within a tissue region comprises a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region, a control device configured for receiving user input to modify the set of stimulation parameters, and controller/processor circuitry configured for, in response to the user input computing a charge injection metric value as a function of a physical electrode parameter and an electrical source parameter for a first set of the electrodes, wherein the electrode set comprises at least two electrodes, comparing the computed charge injection metric value to a safety threshold value, and performing a corrective action based on the comparison.
24 Citations
22 Claims
-
1. A neurostimulation system for use with a plurality of electrodes implanted within a tissue region, comprising:
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
a control device configured for receiving user input to modify the set of stimulation parameters; and
controller/processor circuitry configured for, in response to the user input;
computing a charge injection metric value as a function of a physical electrode parameter and an electrical source parameter for a first set of the electrodes comprising independent contributions of the physical electrode parameter and the electrode source parameter for each electrode in the electrode set, wherein the electrode set comprises at least two electrodes;
comparing the computed charge injection metric value to a safety threshold value; and
performing a corrective action based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
-
17. A neurostimulation system for use with a plurality of electrodes implanted within a tissue region, comprising:
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
a control device configured for receiving user input to modify the set of stimulation parameters; and
controller/processor circuitry configured for, in response to the user input;
computing a charge injection metric value as a function of a physical electrode parameter and an electrical source parameter for a first set of the electrodes, wherein the electrode set comprises at least two electrodes;
comparing the computed charge injection metric value to a safety threshold value; and
performing a corrective action based on the comparison, wherein physical electrode parameter is an electrode surface area, and the electrical source parameter is a charge and the tissue charge injection safety value is computed in accordance with the equation
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
-
18. A neurostimulation system for use with a plurality of electrodes implanted within a tissue region, comprising:
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
a control device configured for receiving user input to modify the set of stimulation parameters; and
controller/processor circuitry configured for, in response to the user input;
computing a charge injection metric value as a function of a physical electrode parameter and an electrical source parameter for a first set of the electrodes, wherein the electrode set comprises at least two electrodes;
comparing the computed charge injection metric value to a safety threshold value; and
performing a corrective action based on the comparison, wherein physical electrode parameter is an electrode surface area, and the electrical source parameter is a charge and the tissue charge injection safety value is computed in accordance with the equation - View Dependent Claims (19, 20, 21, 22)
- a neurostimulator configured for delivering electrical stimulation energy to the plurality of electrodes in accordance with a set of stimulation parameters, thereby injecting a charge into the tissue region;
Specification