A secondary battery built in a bio-signal measuring instrument (a wearable biosensor) is charged without using a dedicated charging terminal. A bio-signal measuring device includes: a battery as an internal power source and a charging circuit for the battery; electrodes which are brought into contact with the skin surface of the human body at the time of bio-signal measurement and are connected to a predetermined power feeder at the time of charging of the battery; a bio-signal processing circuit which processes bio-signals detected at the electrodes in a predetermined manner; and a bio-signal and feed power distribution device, in which the bio-signal processing circuit and the charging circuit are switchably connected to the electrodes through the bio-signal and feed power distribution device, and at the time of the charging of the battery, the electrodes are used as charging terminals.

A wearable cardioverter defibrillator system includes a support structure that a patient can wear. The system also includes electrodes that contact the patient, and define two or more channels from which ECG signals are sensed. A processor may evaluate the channels by analyzing their respective ECG signals, to determine which contains less noise than the other(s). The analysis can be by extracting statistics from the ECG signals, optionally after first processing them, and then by comparing these statistics. These statistics may include tall peak counts, amplitudes of peaks compared to historical peak amplitudes, signal baseline shift, dwell time near a baseline, narrow peak counts, zero crossings counts, determined heart rates, and so on. Once the less noisy signal is identified, its channel can be followed preferentially or to the exclusion of other channels, for continuing monitoring and/or determining whether to shock the patient.

A wearable cardioverter defibrillator system includes a support structure that a patient can wear. The system also includes electrodes that contact the patient, and define two or more channels from which ECG signals are sensed. A processor may evaluate the channels by analyzing their respective ECG signals, to determine which contains less noise than the other(s). The analysis can be by extracting statistics from the ECG signals, optionally after first processing them, and then by comparing these statistics. These statistics may include tall peak counts, amplitudes of peaks compared to historical peak amplitudes, signal baseline shift, dwell time near a baseline, narrow peak counts, zero crossings counts, determined heart rates, and so on. Once the less noisy signal is identified, its channel can be followed preferentially or to the exclusion of other channels, for continuing monitoring and/or determining whether to shock the patient.

Disclosed is a reconfigurable amplifier and an amplification method thereof, the amplifier includes an input selector, a first amplifying circuit, and a second amplifying circuit. The input selector is configured to select one of a voltage input and a current input based on a voltage measurement mode and a current measurement mode. The first amplifying circuit includes a first load element, and is configured to apply a voltage corresponding to the voltage input to the first load element in the voltage measurement mode and receive the current input in the current measurement mode and block a current flowing through the first load element. The second amplifying circuit is configured to mirror a current flowing through the first amplifying circuit in response to one of the voltage input and the current input and generate an output voltage based on the mirrored current.

This specification discloses a brain electrode device. The brain electrode device includes a set of contact points and a set of sub-circuits. The sub-circuits include sensor ports configured to connect to the contact to the respective ones of the contact points. The device can further include an intelligent multiplexer that aggregates signals from the set of sub-circuits and generates an aggregate signal. The aggregate signal is transmitted to a signal acquisition device.

This specification discloses a brain electrode device. The brain electrode device includes a set of contact points and a set of sub-circuits. The sub-circuits include sensor ports configured to connect to the contact to the respective ones of the contact points. The device can further include an intelligent multiplexer that aggregates signals from the set of sub-circuits and generates an aggregate signal. The aggregate signal is transmitted to a signal acquisition device.

A coupled physiological signal measuring device is provided. The coupled physiological signal measuring device includes at least two measuring electrodes, a signal processing unit and a multiplex feedback circuit unit. The measuring electrodes are used to obtain a real-time physiological signal through measurement. The signal processing unit includes a discharge control element. If an electrostatic surge of the real-time physiological signal meets a condition, a discharge control signal is outputted. The multiplex feedback circuit unit is used to discharge the measuring electrodes according to the discharge control signal.

A coupled physiological signal measuring device is provided. The coupled physiological signal measuring device includes at least two measuring electrodes, a signal processing unit and a multiplex feedback circuit unit. The measuring electrodes are used to obtain a real-time physiological signal through measurement. The signal processing unit includes a discharge control element. If an electrostatic surge of the real-time physiological signal meets a condition, a discharge control signal is outputted. The multiplex feedback circuit unit is used to discharge the measuring electrodes according to the discharge control signal.

In the present invention, a right leg drive RLD monitoring system is employed on a medical computing system/computer, such as an ECG, HEMO and/or EP monitoring, mapping and/or recording system, that includes a number of RLD circuits to be utilized for different procedures or monitoring states to be performed using the system. The RLD monitoring system operates to actively monitor and/or record the feedback voltage to the RLD isolated from the patient. Using the measured feedback voltage data, the RLD monitoring system can identify and determine if the RLD circuit in use is approaching saturation, has reached saturation and the duration the RLD circuit was in saturation. The RLD monitoring system can concurrently and/or subsequently select and/or provide selection information regarding an optimal RLD circuit to be utilized to most effectively perform the desired function of the RLD in the procedure being performed using the monitoring, mapping and/or recording system.

In the present invention, a right leg drive RLD monitoring system is employed on a medical computing system/computer, such as an ECG, HEMO and/or EP monitoring, mapping and/or recording system, that includes a number of RLD circuits to be utilized for different procedures or monitoring states to be performed using the system. The RLD monitoring system operates to actively monitor and/or record the feedback voltage to the RLD isolated from the patient. Using the measured feedback voltage data, the RLD monitoring system can identify and determine if the RLD circuit in use is approaching saturation, has reached saturation and the duration the RLD circuit was in saturation. The RLD monitoring system can concurrently and/or subsequently select and/or provide selection information regarding an optimal RLD circuit to be utilized to most effectively perform the desired function of the RLD in the procedure being performed using the monitoring, mapping and/or recording system.