Delivering scheduled and unscheduled therapy without detriment to battery life or accuracy of longevity predictions
First Claim
Patent Images
1. A method comprising:
- applying an electrical signal of electrical signals of scheduled stimulation to a neural structure via an implantable medical device (IMD), wherein the scheduled stimulation is defined by a plurality of parameters and characterized by a first rate of electrical charge delivery to the neural structure, and wherein the first rate is based on one or more of the plurality of parameters;
detecting an event at the IMD after application of the electrical signal and before application of a next scheduled electrical signal of the scheduled stimulation;
applying event stimulation to the neural structure via the IMD in response to detection of the event;
adjusting at least one parameter of the plurality of parameters that define the scheduled stimulation in response to detection of the event to define adjusted stimulation characterized by a second rate of electrical charge delivery to the neural structure that is less than the first rate;
applying the adjusted stimulation to the neural structure via the IMD after application of the event stimulation to compensate for electrical charge delivery due to the event stimulation; and
applying at least one electrical signal of the scheduled stimulation to the neural structure via the IMD after application of the adjusted stimulation.
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Abstract
A method comprises applying a first open-loop electrical signal to a neural structure at a first rate. The method also comprises applying a closed-loop electrical signal to the neural structure in response to an event detection, thus causing an overall rate at which electrical stimulation is applied to the neural structure to exceed the first rate. The method further comprises applying a second open-loop electrical signal to a neural structure at a second rate that is lower than the first rate, thus causing the overall rate to be reduced to the first rate.
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Citations
20 Claims
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1. A method comprising:
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applying an electrical signal of electrical signals of scheduled stimulation to a neural structure via an implantable medical device (IMD), wherein the scheduled stimulation is defined by a plurality of parameters and characterized by a first rate of electrical charge delivery to the neural structure, and wherein the first rate is based on one or more of the plurality of parameters; detecting an event at the IMD after application of the electrical signal and before application of a next scheduled electrical signal of the scheduled stimulation; applying event stimulation to the neural structure via the IMD in response to detection of the event; adjusting at least one parameter of the plurality of parameters that define the scheduled stimulation in response to detection of the event to define adjusted stimulation characterized by a second rate of electrical charge delivery to the neural structure that is less than the first rate; applying the adjusted stimulation to the neural structure via the IMD after application of the event stimulation to compensate for electrical charge delivery due to the event stimulation; and applying at least one electrical signal of the scheduled stimulation to the neural structure via the IMD after application of the adjusted stimulation. - View Dependent Claims (2, 3, 4, 5)
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6. A system, comprising:
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detection logic adapted to detect an event; and stimulation logic coupled to the detection logic and adapted to apply scheduled stimulation, adjusted stimulation, and event stimulation to a neural structure; wherein the scheduled stimulation is characterized by a plurality of parameters and by a first rate of electrical charge delivery to the neural structure that is based on the plurality of parameters; wherein, upon receipt of notification from the detection logic of detection of the event after application of an electrical signal of the scheduled stimulation and before application of a next scheduled electrical signal of the scheduled stimulation, the stimulation logic applies event stimulation to the neural structure; wherein, upon application of the event stimulation to the neural structure, the stimulation logic adjusts one or more parameters of the plurality of parameters to define the adjusted stimulation, wherein the adjusted stimulation is characterized by a second rate of electrical charge delivery to the neural structure that is less than the first rate; and wherein application of the adjusted stimulation to the neural structure compensates for electrical charge delivery due to the event stimulation. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A non-transitory computer-readable medium comprising instructions executable by a processor to:
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cause an electrical signal of electrical signals of scheduled stimulation to be sent to an electrode assembly, wherein the scheduled stimulation is characterized by a first charge delivery rate; cause event stimulation to be sent to the electrode assembly in response to detection of an event after the electrical signal is sent and before a next scheduled electrical signal of the scheduled stimulation is to be sent; determine adjusted stimulation characterized by a second electrical charge delivery rate that is less than the first charge delivery rate to compensate for electrical charge delivery due to the event stimulation sent to the electrode assembly; and cause the adjusted stimulation to be sent to the electrode assembly. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification