Disclosed herein are systems and methods for nerve conduction block that can involve the delivery of relatively high amounts of charge safely to tissue. Such systems and methods can include control systems for safely monitoring a direct current electrode system, including delivering direct current via an electrode lead to a target tissue of a patient; measuring the driving voltage across the electrode; comparing the driving voltage across the electrode to predetermined threshold range values; measuring the body impedance; determining a voltage drop across the lead from the body impedance measurement; and adjusting the driving voltage to maintain the voltage drop across the lead within a predetermined voltage range.

The disclosure describes an enhancement to lead monitoring techniques, which uses a sensing integrity counter (SIC). The techniques of this disclosure may enhance lead monitoring techniques by detecting possible sensing issues based on a significant increase in periodic, e.g., daily, SIC counts relative to previous periods. Some issues with sensing cardiac signals via implantable cardiac leads can result in an implantable medical device (IMD) measuring very short intervals between what appears to be sensed heart beats. Examples of issues include insulation breach, conductor fracture, or poor electrical connection, which may cause noise that appears to be an R-wave. The IMD may detect the noise, along with actual R-waves, and determine that there are relatively short (e.g., less than a threshold) intervals between the “R-waves.” A significant increase in the number or frequency of very short intervals between R-waves may indicate the date/time of a significant sensing issue.

A system and method for extracting ETI load parametric data relative to one or more electrodes of an implanted stimulation lead system associated with an IPG. A Kelvin connection scheme is provided for measuring induced voltages present at stimulated electrodes during a stimulation ramping sequence, which may be used for determining the ETI parametric data using a number of techniques, including, without limitation, a waveform analysis.

Stimulation of neural activity in a nerve supplying the spleen, wherein the nerve is adjacent to the splenic artery at a position where the splenic artery is not in direct contact with the pancreas, can modulate pro- and anti-inflammatory molecules levels, thereby reducing inflammation and providing ways of treating disorders, such as disorders associated with inflammation. The invention provides improved ways of reducing inflammation with minimized off-target effects, in particular surgical trauma.

Apparatus for transcutaneous electrical nerve stimulation in a user, the apparatus comprising: a stimulator for electrically stimulating at least one nerve, a stimulator housing, a monitor for monitoring transient motion of the stimulator housing, an analyzer for analyzing transient motion monitored by the monitor for determining whether transient motion of the stimulator housing has occurred, and a controller for automatically transitioning at least one of the stimulator, the monitor, and the analyzer between a standby mode and a power save mode, wherein the power save mode supports a subset of the functionality of the stimulator and the monitor which is available in the standby mode so as to conserve battery power in the power save mode.

An electrode test system of a defibrillator including electrodes in a face-to-face test arrangement forming a capacitor, an impedance measurement signal generator connected to the electrodes and configured to send an ac signal to the electrodes, an impedance measurement signal processor connected to the electrodes which is placeable in an electrode test state and configured to receive an electrode test ac signal from the electrodes and process the electrode test ac signal to obtain a processed electrode test ac signal, a defibrillator processor connected to the impedance measurement signal generator and the impedance measurement signal processor configured to place the impedance measurement signal processor in the electrode test state and to receive the processed electrode test ac signal, analyze the processed electrode test ac signal to obtain an electrode test impedance signal and analyze the electrode test impedance signal to determine a pass condition or a fail condition of the electrodes.

In embodiments, a WCD system includes electrodes with which it senses an ECG signal of the patient. A processor may detect sequential peaks within the ECG signal, measure durations of time intervals between the peaks, including between non-sequential peaks, and identify a representative duration that best meets a plausibility criterion. The plausibility criterion may be that the representative duration is the one that occurs the most often, i.e. is the mode. Then a heart rate can be computed from a duration indicated by the representative duration and, if the heart rate meets a shock condition, the WCD system may deliver a shock to the patient. An advantage can be that the representative duration can be close to a good R-R interval measurement of a patient, notwithstanding noise in the ECG signal that is in the shape of peaks.

The present invention relates to a mask-shaped skin treatment device and system. The device comprises one or more coupling agent detectors configured to detect presence of coupling agent on one or more skin portions of a user and one or more heating elements configured to cause local heating of one or more skin portions of the user. The one or more heating elements are configured to cause heat selectively based on the presence of coupling agent measured by the one or more coupling agent detectors.

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.

The present invention relates to an RF treatment device, a medical RF device, and control methods therefor. Specifically, provided are an RF treatment device, a medical RF device, and control methods therefor, the RF treatment device comprising: an RF generation unit for generating RF energy; a plurality of RF electrodes connected to the RF generation unit through an RF circuit and selectively inserted into body tissue to transmit RF energy to the body tissue; and a sensing unit for sensing a loss of the RF energy transmitted to the body tissue due to the impedance characteristics of the body tissue.