A device includes a sensor signal input node and a high-pass filter stage. The high-pass filter stage includes an operational amplifier and a feedback integrator. The operational amplifier includes an input node coupled to the sensor signal input node. The feedback integrator is coupled between an output node of the operational amplifier and the input node of the operational amplifier to set a high-pass pole frequency of the high-pass filter stage.

A bioelectrode including a plate, a first electrode disposed on a first side of the plate, and a second electrode disposed on the first side of the plate and separate from the first electrode. The bioelectrode further includes a first guard portion disposed on a second side of the plate, a second guard portion disposed on the second side of the plate and separate from the first guard portion, and a preamplifier configured to output a voltage signal based on a biosignal measured between the first electrode and the second electrode.

A system for wirelessly obtaining physiological data from a subject includes a sensor patch and a separate electronics package. The sensor patch is disposed on and adheres to the subject, and includes a first part of a releasable electrical connector. An electronics package includes a second part of the first releasable electrical connector, which is used to physically and electrically connect the electronics package to the sensor patch. The electronics package includes a flexible substrate, with shells set on this substrate. The shells enclose the electronics. The shells are connected by a flexible circuit board. Analog front end circuitry is placed in one shell, while the wireless transceiver is placed in the other shell.

A sensor device for potential and/or impedance measurements on a body of a user, including a central electronic unit and at least a first sensor and a second sensor. Each sensor is connected to the central electronic unit by a one-wire connector. Each sensor includes a current electrode and a potential electrode destined to be in contact with a surface of the body. The master includes a master current source configured to circulate a master current in the one-wire connector, the current electrode of the at least first and second sensors and the body, when the sensors are in contact with a surface of the body. Each sensor includes a harvesting device configured to harvest energy from the circulating master current in a powering frequency band.

Systems, computing platforms, and methods for sampling and analyzing common mode noise on electrocardiogram signals to help to minimize the interference to the electrocardiogram signals are disclosed. Exemplary implementations may: obtain electrocardiogram signals from one or more sensors configured to be attached to a patient and communicatively connected to a patient monitor; receive the electrocardiogram signals from one or more sensors by the patient monitor; display the electrocardiogram signals on one or more displays of the patient monitor; sample and analyze a direct current range and an alternating current spectrum to identify common mode interference levels within the obtained electrocardiogram signals; display the direct current range and the alternating current spectrum via the one or more displays of the patient monitor; and update the display of the direct current range and the alternating current spectrum in real time to identify sources of common mode interference.

Systems, computing platforms, and methods for sampling and analyzing common mode noise on electrocardiogram signals to help to minimize the interference to the electrocardiogram signals are disclosed. Exemplary implementations may: obtain electrocardiogram signals from one or more sensors configured to be attached to a patient and communicatively connected to a patient monitor; receive the electrocardiogram signals from one or more sensors by the patient monitor; display the electrocardiogram signals on one or more displays of the patient monitor; sample and analyze a direct current range and an alternating current spectrum to identify common mode interference levels within the obtained electrocardiogram signals; display the direct current range and the alternating current spectrum via the one or more displays of the patient monitor; and update the display of the direct current range and the alternating current spectrum in real time to identify sources of common mode interference.

A read-out circuitry for acquiring a multi-channel biopotential signal, comprises: a plurality of read-out signal channels, each receiving an input signal from a unique signal electrode; a reference channel receiving a reference signal from a reference electrode; wherein each read-out signal channel and the reference channel comprises a channel amplifier connected to receive the input signal in a first input node and with an output node connected to a second input node via a channel feedback loop; wherein each signal channel amplifier comprises a capacitor between the second input nodes of the signal channel amplifier and the reference channel amplifier, and wherein each signal channel feedback loop and the reference channel feedback loop comprise a filter.

In a system for measuring biopotential signals generated by the physiological activity of a subject, it is necessary to monitor the measured biopotentials against a reliable reference. An apparatus and method of deriving a reference suitable for use in referencing and grounding of the subject are described.

In a system for measuring biopotential signals generated by the physiological activity of a subject, it is necessary to monitor the measured biopotentials against a reliable reference. An apparatus and method of deriving a reference suitable for use in referencing and grounding of the subject are described.

An interference signal compensation facility in a differential voltage measuring system including a signal measuring circuit for measuring bioelectric signals with a number of useful signal paths, each with a capacitive sensor electrode for the acquisition of a measurement signal, is described. The interference signal compensation facility includes at least one capacitive reference electrode, set up to acquire a reference signal which possibly includes an interference signal generated by an external interference source. Furthermore, the interference signal compensation facility includes an echo compensation unit, set up to filter the measurement signal based upon the capacitively acquired reference signal and to determine an interference-compensated measurement signal. A differential voltage measuring system is also described. Moreover, an X-ray imaging system is described. In addition, a method for generating an interference-reduced biological measurement signal is described.