Long-term electrocardiographic and physiological monitoring over a period lasting up to several years in duration can be provided through a continuously-recording insertable cardiac monitor. The sensing circuitry and the physical layout of the electrodes are specifically optimized to capture electrical signals from the propagation of low amplitude, relatively low frequency content cardiac action potentials, particularly the P-waves that are generated during atrial activation and storing samples of captured signals. In general, the ICM is intended to be implanted centrally and positioned axially and either over the sternum or slightly to either the left or right of the sternal midline in the parasternal region of the chest.

An insertable cardiac monitor (ICM) with induction-based recharging capabilities and a transmitting coil for recharging the same are disclosed. The length of the monitoring performed by the ICM is extended and the functionality of the ICM enhanced, by including an internal energy harvesting module that allows for charging the ICM at a high speed without burning the patient or overheating components of the ICM. Internally, the energy harvesting module includes at least two overlapping receiving coils that are spaced to be orthogonal to each other and that have a tilt angle of substantially 45°. Such overlapping wire combination allows to minimize mutual inductance of the solenoid coils and increase the rate at which energy can be provided to the energy harvesting module. Further, the rate at which the energy is transmitted from the outside can be increased by defining in a transmitting coil a substantially triangular gap.

An insertable cardiac monitor (ICM) with induction-based recharging capabilities and a transmitting coil for recharging the same are disclosed. The length of the monitoring performed by the ICM is extended and the functionality of the ICM enhanced, by including an internal energy harvesting module that allows for charging the ICM at a high speed without burning the patient or overheating components of the ICM. Internally, the energy harvesting module includes at least two overlapping receiving coils that are spaced to be orthogonal to each other and that have a tilt angle of substantially 45°. Such overlapping wire combination allows to minimize mutual inductance of the solenoid coils and increase the rate at which energy can be provided to the energy harvesting module. Further, the rate at which the energy is transmitted from the outside can be increased by defining in a transmitting coil a substantially triangular gap.

The present disclosure relates to a wearable monitor device and methods and systems for using such a device. In certain embodiments, the wearable monitor records cardiac data from a mammal and extracts particular features of interest. These features are then transmitted and used to provide health-related information about the mammal.

The present disclosure relates to a wearable monitor device and methods and systems for using such a device. In certain embodiments, the wearable monitor records cardiac data from a mammal and extracts particular features of interest. These features are then transmitted and used to provide health-related information about the mammal.

A system (100) for assessing fluid responsiveness includes an infusion pump (24) in communication with at least one processor (32), and a plurality of physiological monitors (40,42,44,46) operable to receive physiological signals from an associated patient. Physiological signals (48,50) acquired from the associated patient (10) during a fluid challenge are synchronized with a timing signal (54) of the infusion pump (24) administering the fluid challenge. One or more dynamic indices and/or features (58) is calculated from the synchronized physiological signals (50), and one or more dynamic indices and/or features (50) is calculated from baseline physiological signals (48) acquired from the associated patient (10) prior to the fluid challenge. A fluid responsiveness probability value (64) of the patient (10) is determined based on dynamic indices and/or features (58) from the synchronized physiological signals (50) and dynamic indices and/or features (50) from the baseline physiological signals (48).

A heart-rate associated with a heartbeat signal is determined. A transform is selected based on the determined heart-rate associated with the heartbeat signal and a reference heart-rate associated with a dictionary of a sparse approximation model. The transform is selected independent of other factors associated with generation of the heartbeat signal. The selected transform is applied to the dictionary of the sparse approximation model, generating an adjusted dictionary of the sparse approximation model. Anomalous heartbeats in the heartbeat signal are detected using the adjusted dictionary of the sparse approximation model.

A system comprising at least one inertial motion sensor, an integrated circuit including an antenna to enable radio communication with other devices; at least one wearable physiological signal detector, an integrated circuit including an antenna to enable radio communication with other devices, capable of detecting/transmitting at least one heart rate datum of the wearer; at least one remote data collection unit capable of communicating with the motion sensor and the physiological parameter detector, of securely storing and processing the data transmitted to it by the latter; at least one operator interface, connected via radio to the motion sensor, to the physiological parameter detector and to the remote data collection unit; synchronization device/unit/component or the like for synchronizing the signals transmitted and received by the different elements; wherein at least one inertial motion sensor comprises connection device/unit/component or the like for the connection to a respective footwear of a patient.

A noise-separating cardiac monitor is provided. An implantable housing includes an external surface. A wireless antenna is shaped to wrap around an interior periphery of the implantable housing. Electrodes are provided on a ventral surface of the implantable housing to capture P-wave signals and R-wave signals. Electronic circuitry is provided within the wearable housing and includes a low power microcontroller. A front end circuit includes a signal lead operable to sense cardiac electrical potentials through one of the electrodes, a reference lead operable to sense the cardiac electrical potentials through another electrode, and a reference generator configured to inject a driven reference to the reference lead. The signal lead includes a coupling capacitor and a protection resistor associated with thermal noise. The thermal noise is not contained in the driven reference and not introduced to the reference lead. A non-volatile memory is electrically interfaced with the microcontroller.

A noise-separating cardiac monitor is provided. An implantable housing includes an external surface. A wireless antenna is shaped to wrap around an interior periphery of the implantable housing. Electrodes are provided on a ventral surface of the implantable housing to capture P-wave signals and R-wave signals. Electronic circuitry is provided within the wearable housing and includes a low power microcontroller. A front end circuit includes a signal lead operable to sense cardiac electrical potentials through one of the electrodes, a reference lead operable to sense the cardiac electrical potentials through another electrode, and a reference generator configured to inject a driven reference to the reference lead. The signal lead includes a coupling capacitor and a protection resistor associated with thermal noise. The thermal noise is not contained in the driven reference and not introduced to the reference lead. A non-volatile memory is electrically interfaced with the microcontroller.