In one example, the disclosure describes a method comprising receiving, by processing circuitry, information indicative of one or more evoked compound action potential (ECAP) signals. The one or more ECAP signals are sensed by at least one electrode carried by a medical lead. The processing circuitry determining that at least one characteristic value of the one or more ECAP signals is outside of an expected range. Responsive to determining that the at least one characteristic value of the one or more ECAP signals is outside of the expected range, the processing circuitry performs a lead integrity test for the medical lead.

An electrode (10) for transcranial current stimulation is provided. The electrode (10) comprises at least two pins (11a, 11b) for contacting the skin of a living or human being, and a current delivering unit (12) connected to the at least two pins (11a, 11b). The current delivering unit (12) is configured to estimate the corresponding range of the respective contact impedance with respect to the skin for each of the at least two pins (11a, 11b) or to analyze the corresponding level of the respective contact impedance with respect to the skin for each of the at least two pins (11a, 11b). The current delivering unit (12) is configured to distribute a desired current over all of the at least two pins (11a, 11b) or to select a set of the at least two pins (11a, 11b) for delivering a set of partial currents in order to achieve the desired current.

An implantable medical device (IMD) performs, within a first predetermined time following an implantation, a first device test sequence over an evaluation period. The device test sequence includes at least two of: detecting an impedance for at least one electrical path having at least one electrode, and comparing the impedance to a first predetermined impedance threshold to determine a connection status of the IMD; comparing, over an electrogram (EGM) test period, at least one EGM event of the patient against a first predetermined EGM event threshold; determining a first pacing capture threshold of the IMD; and detecting at least one clinical or patient-specific physiologic metric, and comparing the physiologic metric to a first predetermined physiologic metric threshold. The IMD transmits within a second predetermined time a status signal to an external device indicating a status of at least one of the diagnostic tests in the first device test sequence.

A technique for identifying lead-related conditions, such as insulation breaches and/or externalization of lead conductors, includes analyzing characteristics of electrical signals generated on one or more electrode sensing vectors of the lead by a test signal to determine whether a lead-related condition exists. The characteristics of the electrical signals induced on the lead by the test signal may be significantly different on a lead having an insulation breach or externalized conductor than on a lead not having such lead-related conditions. As such, the implantable medical device may be subject to a known test signal and analyze the signals on the lead to detect lead-related conditions.

A neuromodulation device is configured with a set of testing program configuration instructions including therapeutic neuromodulation field-setting parameters. The device determines a custom priming program in response to the testing program configuration instructions. The custom priming program controls the neuromodulation device to generate a priming field with specific correspondence to the therapeutic neuromodulation field to be produced by the testing program.

Systems for detecting contact between an electrode and a patient's skin using one or more contact detection schemes are provided. An example system can include an electrode assembly comprising at least one electrode configured to be disposed substantially proximate to the patient's skin and configured to at least one of sense an ECG signal of the patient and provide one or more therapeutic pulses to the patient, one or more sensors disposed on the electrode assembly and isolated from the electrode, the sensors configured to measure one or more properties to determine contact between the electrode and the patient's skin, and a controller configured to receive data representing the measured one or more properties and determine, based at least in part on the received data, whether the electrode is in contact with the patient's skin. The sensors can include temperature, impedance, capacitance, optical, and other similar sensors.

A wearable, percutaneous device for suppressing appetite or hunger in a patient includes a microprocessor, electrical stimulator and at least one percutaneous electrode implanted and configured to deliver electrical stimulation through the patient's skin. The percutaneous device includes a pad and at least one needle, in which the electrode is disposed, for secure placement of the device within the skin of a patient. The percutaneous device is adapted to provide electrical stimulation as per stimulation protocols and to communicate wirelessly with a companion control device configured to monitor and record appetite patterns of the patient. The control device is also configured to monitor, record, and modify stimulation parameters of the stimulation protocols.

A treatment device that shortens the time period until healing is determined even when a bone defect or a root apex lesion is generated in an apical area. The treatment device includes a file holder, a high-frequency signal generating circuit, and a control circuit. The file holder holds a file to be located in the site to be treated. The high-frequency signal generating circuit passes a high frequency current through the file. The control circuit controls a frequency of the high frequency current to be passed through the file from the high-frequency signal generating circuit. The control circuit controls the frequency of the high frequency current to be passed through the file within a range of 1.001 MHz to 11.700 MHz.

An illustrative electrode locating system directs a first electrode on an electrode lead to generate an electrical pulse after being inserted into a cochlea of a patient during an insertion procedure to insert the electrode lead into the cochlea. The electrode locating system then directs a voltage to be detected between a second electrode of the electrode lead that has not yet been inserted into the cochlea and a ground contact that is to remain external to the cochlea after the insertion procedure. Based on the voltage detected between the second electrode and the ground contact, the electrode locating system determines that the second electrode has not yet been inserted into the cochlea. Corresponding systems and methods are also disclosed.

This disclosure provides self-applied wearable devices configured to electrically stimulate a user, generate and/or collect a user's electrophysiological data via electrodes, in contact with the outer layer of skin, that hydrate the skin surface using iontophoresis, reverse iontophoresis, and/or a combination thereof. The wearable devices provided herein increase conductivity and/or move biological ions and/or polar molecules from the electrode into the outer skin layer of skin surface to reduced impedance between the outer skin layer and electrode, wherein the impedance between electrodes is matched and/or minimized. This disclosure also provides systems comprising the same, and methods for making and using the same.