Management of stimulation safety limits in a neurostimulation system
First Claim
1. A neurostimulation system for concurrent use with different sets of electrodes, comprising:
- a neurostimulator configured for delivering electrical stimulation energy to a tissue region in accordance with a stimulation parameter, thereby injecting a charge into the tissue region at the different sets of electrodes;
an external control device configured for programming the neurostimulator with the stimulation parameter; and
control circuitry configured for determining a value of the charge injected into the tissue region at each of the different sets of electrodes by the delivered electrical stimulation energy, and for subsequently directly controlling the charge injected independently at each of the electrode sets respectively based on the determined values.
1 Assignment
0 Petitions
Accused Products
Abstract
A neurostimulation system for management of stimulation safety limits. The system determines a tissue charge injection metric at each electrode, compares the metric to the hard stop charge limit, and prevents the neurostimulator from delivering stimulation energy to the tissue region in accordance based on the comparison. The hard stop limit may be user-programmable or may be automatically modified in response to detection of electrode characteristics. The system may quantitatively notify a user of a value of the injected charge injected into the tissue. The electrodes may be organized into different sets, in which case, the system may directly control tissue charge independently at each of the electrode sets. If current steering is provided, the system may displace the electrical stimulation energy along the tissue region in one direction, while preventing the charge injection value at each of the electrodes from meeting or exceeding the hard stop charge limit.
27 Citations
18 Claims
-
1. A neurostimulation system for concurrent use with different sets of electrodes, comprising:
-
a neurostimulator configured for delivering electrical stimulation energy to a tissue region in accordance with a stimulation parameter, thereby injecting a charge into the tissue region at the different sets of electrodes; an external control device configured for programming the neurostimulator with the stimulation parameter; and control circuitry configured for determining a value of the charge injected into the tissue region at each of the different sets of electrodes by the delivered electrical stimulation energy, and for subsequently directly controlling the charge injected independently at each of the electrode sets respectively based on the determined values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification