A system for providing a standard electrocardiogram (ECG) signal for a human body using contactless ECG sensors for outputting to exiting medical equipment or for storage or viewing on a remote device. The system comprises a digital processing module (DPM) adapted to connect to an array of contactless ECG sensors provided in a fabric or the like. A selection mechanism is embedded into the DPM which allows the DPM to identify body parts using the ECG signals of the different ECG sensors and select for each body part the best sensor lead. The DPM may then produce the standard ECG signal using the selected ECG signals for the different body parts detected. The system is adapted to continuously re-examine the selection to ensure that the best leads are selected for a given body part following a movement of the body part, thereby, allowing for continuous and un-interrupted ECG monitoring of the patient.

Systems and methods for electrocardiography monitoring use multiple capacitive sensors in order to determine reliable measurements of electrophysiological information of a patient. Relative coupling strength and/or reliability is used to select dynamically which sensors to use in order to determine, in particular, an electrocardiogram of the patient.

A system for providing a standard electrocardiogram (ECG) signal for a human body using contactless ECG sensors for outputting to exiting medical equipment or for storage or viewing on a remote device. The system comprises a digital processing module (DPM) adapted to connect to an array of contactless ECG sensors provided in a fabric or the like. A selection mechanism is embedded into the DPM which allows the DPM to identify body parts using the ECG signals of the different ECG sensors and select for each body part the best sensor lead. The DPM may then produce the standard ECG signal using the selected ECG signals for the different body parts detected. The system is adapted to continuously re-examine the selection to ensure that the best leads are selected for a given body part following a movement of the body part, thereby, allowing for continuous and un-interrupted ECG monitoring of the patient.

System for capacitively recording electrical bio-signals from a bio-signal source, wherein the system has at least one capacitive measuring electrode and at least one electronic evaluation unit which is coupled to the measuring electrode and is intended to evaluate the electrical signals from the measuring electrode, and wherein the system also has means for monitoring the quality of the capacitive coupling between the measuring electrode and the bio-signal source, characterized in that the means for monitoring the quality of the capacitive coupling have, in addition to the measuring electrode(s), at least two injection electrodes which are electrically separated from one another and are intended to feed injection signals into the at least one measuring electrode via the bio-signal source, wherein the system has signal generators for generating a first injection signal and a second injection signal which differs from the first injection signal, which signals are fed into the measuring electrode by means of the injection electrodes via the bio-signal source, and wherein the system has a determination unit which is set up to determine the quality of the capacitive coupling between the measuring electrode and the bio-signal source on the basis of the signals received via the measuring electrode on the basis of the signal components which are contained therein and stem from the first and second injection signals.

In some embodiments, a cardiac monitoring system includes multiple sensors configured for implantation in a cardiovascular system of a user. Each sensor includes a sensing unit configured to be disposed in sensory communication with the location for measuring a biological parameter in the at least one heart chamber. The sensing unit is also configured to generate a sensory signal associated with the biological parameter. Each sensor also includes a wireless transceiver configured to receive the sensory signal from the sensing unit. The wireless transceiver is further configured to wirelessly transmit the sensory signal to an external processing device disposed outside a body of the user. The external processing device monitors, based on the sensory signal received from at least two sensors from the plurality of sensors, cardiac health associated with at least one of an implanted device or a surgery.

A patient monitoring system includes a capacitive electrode connectable to a patient to detect an output signal and a signal generator unit that transmits a carrier signal to the capacitive electrode, the carrier signal having a carrier frequency and a carrier amplitude. The patient monitoring system further includes an amplifier unit that amplifies the output signal detected by the capacitive electrode to generate an amplified output signal. A gain determination module in the patient monitoring system determines an output amplitude of a carrier frequency portion of the amplified output signal, and determines a system gain based on a comparison between the output amplitude and the carrier amplitude. A voltage determination module in the patient monitoring system filters the output signal to isolate a physiological signal detected from the patient, and determines a voltage of the physiological signal based on the system gain.

A patient monitoring system comprises a data acquisition device that records physiological signals from a patient, the data acquisition device having at least 3 receiving ports, each receiving port configured to connect to a patient connector. The monitoring system further includes a galvanic patient connector that galvanically connects a first receiving port of the patient connector and the patient, and at least a first capacitive patient connector and a second capacitive patient connector. Each capacitive patient connector capacitively couples a respective receiving port of the data acquisition device and the patient.

A seat configured so that the accuracy of detection of each sensor provided in the seat to detect the body potential of a seated occupant can be improved without degrading the sense and comfort of the seat. A seat includes a trim cover having a contact surface for a seated occupant, and sensors arranged opposite to the contact surface and configured to detect the body potential of the seated occupant. Each sensor is a capacitive coupling sensor configured to detect the body potential through the trim cover. Moreover, a portion of the seat facing each sensor includes a dielectric configured to increase the dielectric constant of such a portion.

An analog front end system can include a filter bypass switch connected in a boot-strapped configuration to pull a control terminal of the filter bypass switch above or below a supply voltage. Using bootstrapped switches can allow both the charge injection and capacitive coupling of the bypass switches of a differential anti-alias filter (AAF) to be common mode. A differential input signal of the ADC is not affected by the charge injection and capacitive coupling of the bypass switches in the AAF filter to a first order.

A low power high precision mixed signal analog to digital converter is provided for processing biometric signals in the presence of a large interferer signal for cableless patient monitoring; a capacitive difference circuit produces an analog difference signal by differencing an analog feedback loop signal and an input signal; an analog-to-digital converter sigma delta converter produces a digital version of the difference signal, a digital feedback loop includes a digital integrator and a capacitive digital-to-analog converter configured to produce the analog loop feedback signal based upon the digital version of the difference.