A device for detecting stenosis comprising disposable components to ensure function and sanitary conditions, said device having a disposable sensing pad, a disposable piezo assembly, and a disposable sensing pod; wherein the entire device can be disposed of after a pre-determined number of uses to ensure accuracy of results and of sanitary conditions.

Physiological monitoring can be provided through a lightweight wearable monitor that includes two components, a flexible extended wear electrode patch and a reusable monitor recorder that removably snaps into a receptacle on the electrode patch. The wearable monitor sits centrally (in the midline) on the patient's chest along the sternum oriented top-to-bottom. The placement of the wearable monitor in a location at the sternal midline, with its unique narrow hourglass-like shape, significantly improves the ability of the wearable monitor to cutaneously sense cardiac electrical potential signals, particularly the P-wave and, to a lesser extent, the QRS interval signals indicating ventricular activity in the ECG waveforms. Additionally, the monitor recorder includes an ECG sensing circuit that measures raw cutaneous electrical signals and performs signal processing prior to outputting the processed signals for sampling and storage.

An arrhythmia detection system and associated methods are disclosed for analyzing and classifying arrhythmia-related heartbeats of a user based on an at least one biosignal associated with heart activity of the user, as captured by an at least one lead of an at least one ECG recording.

The invention discloses a method, a system, a computer program and a device for determining the surface charge and/or dipole densities on heart walls. Using the foregoing, a table of dipole densities ?(P, t) and/or a table of surface charge densities ?(P, t) of a given heart chamber can be generated.

Cardiac electrograms are recorded in a plurality of channels. Beats are classified automatically into respective classifications according to a resemblance of the morphologic characteristics of the beats to members of a set of templates. Respective electroanatomic maps of the heart are generated from the classified beats.

A monitor recorder optimized for electrocardiography and respiratory data acquisition and processing is provided. The recorder includes a sealed housing and an electronic circuitry comprised within the sealed housing, which includes an electrocardiographic front end circuit electrically interfaced to an externally-powered micro-controller and operable to sense electrocardiographic signals through electrodes provided on the patch; the micro-controller interfaced to one or more respiratory sensors, the micro-controller operable to sample the electrocardiographic signals, to sample respiratory events detected by the one or more respiratory sensors upon receiving one or more signals from the one or more respiratory sensors, to buffer each of the respiratory event samples, to compress each of the buffered respiratory event samples, to buffer each of the compressed respiratory event samples, and to write the buffered compressed respiratory event samples and the samples of the electrocardiography signals into an externally-powered flash memory; and the memory interfaced with the micro-controller.

An electronic device and method are disclosed herein. The electronic device includes a housing, electrodes disposed on a face of the housing, and a processor which implements the method. The method includes in response to an electrocardiogram request, detecting a first signal using a first electrode and a fourth electrode from among the plurality of electrodes, detecting a second signal using a second electrode and the fourth electrode, detecting a third signal using a third electrode and the fourth electrode, and storing in the memory the first signal and the second signal as a first biological signal, the second signal and the third signal as a second biological signal and the third signal and the first signal as a third biological signal in association with the requested electrocardiogram measurement.

Methods, apparatuses and wearable devices for measuring an ECG signal for a user wearing a wearable device includes when the ECG signal is measured in a first mode, receiving the ECG signal by an ECG sensor from a closed circuit formed by a first ECG sensor electrode and a second ECG sensor electrode, in which the wearable device includes a main body detachable to the wearable device, a connecting portion, and electrode patches, and the main body includes the ECG sensor, the first ECG sensor electrode, and the second ECG sensor electrode, and when the ECG signal is measured in a second mode, receiving the ECG signal by the ECG sensor from a closed circuit formed by electrodes of the electrode patches, in which the ECG sensor is in the main body and the main body is connected to the electrode patches.

A system for detecting an atrial tachyarrhythmia episode includes a medical device having sensing circuitry configured to receive a cardiac electrical signal from electrodes coupled to the medical device and a processor configured to detect an atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold. The processor is configured to determine if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode and adjust the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.

A wearable electrocardiography monitoring ensemble is provided. A first receptacle is defined in a wearable garment by two horizontal bands placed across the wearable garment. A second receptacle is defined by two further horizontal bands positioned across the wearable garment under the first receptacle. A first electrode assembly is positioned within the first receptacle and includes a backing with an electrical connection having an electrode on one end of the electrical connection and terminated at the other end of the electrical connection to connect with a monitor recorder. A second electrode assembly is positioned within the second receptacle and includes a backing with an electrical connection having an electrode on one end of the electrical connection and terminated at the other end of the electrical connection to connect with a further monitor recorder, wherein the first and second electrodes are aligned longitudinally in the wearable garment.