A system comprises a cloud computing system, a computing device, and a sensor device. The sensor device is configured to sense an electrocardiogram of the patient, detect a ventricular tachyarrhythmia based on sensed electrocardiogram, and wirelessly communicate with the computing device in response to the detection of the ventricular tachyarrhythmia. Based on the wireless communication from the sensor device, the computing device is configured to at least one of output a local alarm or transmit an alert to an emergency medical service via the cloud computing system. Processing circuitry of at least one of the sensor device, the computing device, or the cloud computing system is configured to determine QT intervals based on the electrocardiogram, and transmit a message indicating QT prolongation of the patient to a clinician based on a determination that the QT intervals satisfy one or more QT prolongation criteria.

The invention provides methods comprising: (i) providing data from a wearable motion sensing system worn by a subject and data from a reference motion sensing system recording the movement of the subject; and (ii) synchronizing the data from the wearable motion sensing system and the reference motion sensing system by: determining a first signal derived from the acceleration and optionally the angular velocity of a sensor of the wearable motion sensing system, as a function of time; determining a corresponding second signal derived from the position of one or more markers as measured by the reference motion sensing system and/or the ground reaction force applied to feet of the subject, as a function of time; and identifying a time lag that aligns the first signal and the second signal. Related methods, systems and products are also described.

An implantable medical device includes one or more sensors configured to capture at least one of a sound or a vibration emitted by a passive implanted device implanted within a patient. Processing circuitry may obtain, from the one or more sensors, a signal indicative of the at least one of the sound or the vibration captured by the one or more sensors, determine, based on the at least one of the sound or the vibration captured by the one or more sensors, a physiological characteristic of the patient, and generate an output based on the physiological characteristic of the patient.

An insertion device for inserting at least an insertable part of a medical device into a body tissue of a subject is proposed, that includes: at least one housing with at least one holding structure adapted to releasably receive the medical device, at least one insertion tool configured for inserting at least the insertable part of the medical device, at least one wheel comprising a guiding structure configured for guiding an axial movement of the insertion tool and the holding structure between a distal position and a proximal position, and at least one torsional drive configured for rotating the wheel upon activation, wherein the guiding structure comprises a shape with an eccentricity relative to a center of the wheel and/or relative to a turning point of the wheel, wherein the eccentricity is unequal to zero, and wherein the shape is configured to slow a linear movement around a turning point of the insertion tool.