Automatic Adjustment of Sub-Perception Therapy in an Implantable Stimulator Using Detected Compound Action Potentials
AssigneeBoston Scientific Neuromodulation Corporation
InventorsRosana Esteller, Rafael Carbunaru
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Abstract
Medical device systems and methods for providing spinal cord stimulation (SCS) are disclosed. The SCS systems and methods provide therapy below the perception threshold of the patient. The methods and systems are configured to measure neurological responses to stimulation and use the neurological responses as biomarkers to maintain and adjust therapy. An example of neurological responses includes an evoked compound action potential (ECAP).
Claims17
A method of providing electrical stimulation to a patient's spinal cord using a medical device comprising at least one electrode lead implantable in the patient's spinal column and comprising a plurality of electrodes, the method comprising:
- providing stimulation at at least one of the plurality of electrodes, wherein the stimulation is configured to be below the patient's perception threshold;
- using one or more of the plurality of electrodes to record evoked compound action potentials (ECAPs) evoked in the patient's spinal cord in response to the stimulation;
- extracting at least one feature of the ECAPs;
- and
- using the extracted at least one feature of the ECAPs to adjust the stimulation, wherein the adjusted stimulation is below the patient's perception threshold.
A medical device comprising:
- a plurality of electrode nodes, each electrode node configured to be coupled to an electrode of an electrode lead configured for implantation in a patient's spinal column;
- and
- control circuitry configured to:
- provide stimulation at at least one of the electrodes, wherein the stimulation is configured to be below the patient's perception threshold;
- use one or more of the electrodes to record evoked compound action potentials (ECAPs) evoked in the patient's spinal cord in response to the stimulation;
- extract at least one feature of the ECAPs;
- and
- use the extracted at least one feature of the ECAPs to adjust the stimulation, wherein the adjusted stimulation is below the patient's perception threshold.
Dependencies are inferred from the claim text.