Abstract: Systems, devices, and techniques for adjusting electrical stimulation based on a posture state of a patient are described. For example, processing circuitry is configured to receive an input from a user adjusting an informed stimulation parameter that at least partially defines a plurality of informed pulses, determine a ratio of a first value of an informed stimulation parameter to a first value of a control stimulation parameter that at least partially defines a plurality of control pulses, change, according to the input, the first value of the informed stimulation parameter to a second value of the informed stimulation parameter, and change, based on the input and the ratio, the first value of the control stimulation parameter to a second value of the control stimulation parameter. The processing circuitry' can then control delivery of the adjusted control pulses and informed pulses.

Abstract: Systems, devices, and techniques are described for adjusting electrical stimulation based on detected ECAPs. In one example, a medical device includes processing circuitry configured to control stimulation circuitry to deliver a first electrical stimulation pulse and sensing circuitry to detect, after delivery of the first electrical stimulation pulse, an ECAP signal. The processing circuitry may be configured to determine a characteristic value of the ECAP signal, determine an ECAP differential value that indicates whether the characteristic value of the ECAP signal is one of greater than a selected ECAP characteristic value or less than the selected ECAP characteristic value, determine, based on the ECAP differential value, a gain value, determine, based on the gain value, a parameter value that at least partially defines a second electrical stimulation pulse, and control the stimulation circuitry to deliver the second electrical stimulation pulse according to the parameter value.

Abstract: Devices, systems, and techniques are described for selecting an evoked compound action potential (ECAP) growth curve based on a posture of a patient. The ECAP growth curve defines a relationship between a parameter defining delivery of stimulation pulses delivered to the patient and a parameter of an ECAP signal of a nerve of a patient elicited by a stimulation pulse. In one example, a medical device detects a posture of a patient and selects an ECAP growth curve corresponding to the detected posture. The medical device selects, based on the ECAP growth curve corresponding to the detected posture and a characteristic of a detected ECAP signal, a value for a parameter for defining delivery of the stimulation pulses to the patient and controls delivery of the stimulation pulses according to the selected value for the parameter.

Abstract: Examples for controlling electrical stimulation therapy are described. One example includes delivering a pulse train at a frequency to a patient, the pulse train comprising a plurality of first pulses at least partially interleaved with a plurality of second pulses, wherein the plurality of first pulses are configured to facilitate sensing elicited electrical signals, each pulse of the plurality of first pulses having an active first phase and active second phase. Each pulse of the plurality of second pulses may include an active first phase and a passive second phase. Additionally, or alternatively, the plurality of second pulses may alternate between a cathodic active first phase and an anodic active first phase according to a ratio. At least one pulse of the plurality' of second pulses may have an interphase interval that is longer than an interphase interval of at least one pulse of the plurality of first pulses.

Abstract: Processing circuitry of a system configured to determine a patient state based on sensed signals including posture and activity information and control delivery of electrical stimulation therapy to the patient via electrodes implanted proximal to target tissue of the patient. The sensed signals also include impedance measurement, and other bioelectrical signals, where sensing is interleaved with the electrical stimulation therapy. Responsive to determining the patient state, select an action, wherein the selected action comprises one or more of: store collected information, upload the collected information to an external computing device, and output an electronic signal comprising an alert.

Abstract: Processing circuitry for a medical system configured to sense bioelectrical signals and determine posture and activity information as well as information about the environment of the patient. The processing circuitry is also configured to control stimulation generation circuitry to deliver the electrical stimulation therapy, and interleaved with the electrical stimulation therapy, control the stimulation generation circuitry to output an impedance measurement signal. The processing circuitry is further configured to determine respiration of the patient based on the impedance. Responsive to determining the respiration of the patient, the processing circuitry may then determine a patient state based on the determined respiration, and the posture and activity information of the patient.

Abstract: This disclosure is directed to devices, systems, and techniques for controlling electrical stimulation. In some examples, a computing device includes a therapy-management application configured to assist a user to: capture a representative evoked compound action potential (ECAP) signal from a patient based; apply one or more filters to the representative ECAP signal to select one or more parameters of the representative ECAP signal; and control electrical stimulation therapy based at least in part on the one or more parameters.

Abstract: Techniques are disclosed for implementing the use of electrically evoked compound action potentials (ECAPs) to adaptively adjust parameters of high frequency electrical stimulation. In one example, a medical device delivers electrical stimulation therapy comprising a train of electrical stimulation pulses to a patient, wherein the train of electrical stimulation pulses comprises a pulse frequency greater than or equal to 500 Hertz. After delivering the train of electrical stimulation pulses, the medical device ceases delivery of the high frequency electrical stimulation therapy for a predetermined period of time. During the predetermined period of time, the medical device senses an ECAP from the patient and determines, based on the sensed ECAP, a value of a parameter at least partially defining the train of electrical stimulation pulses.