A sensor interface is configured to receive a sensor signal. A transmitter generates a transmit signal. A receiver receives the signal corresponding to the transmit signal. Further, a monitor interface is configured to communicate a waveform to the monitor so that measurements derived by the monitor from the waveform are generally equivalent to measurements derivable from the sensor signal.

An arm mountable portable patient monitoring device configured for both on patient monitoring of parameter measurements using one or more sensors operatively connected to the portable patient monitoring device and wireless transmission of parameter measurements. The arm mountable portable patient monitoring device includes a pulse oximetry sensor configured to be wrapped around a digit of a patient, a housing having a size and shape configured for mounting to a lower arm of the patient, and a strap mountable to the back side of the housing and configured to secure the housing to the lower arm of the patient. The housing includes a display, a first sensor port positioned on the housing to face toward a hand of the patient, second and third sensor ports, a battery, signal processing arrangements to cause display of parameter measurements, and a transmitter to transmit information indicative of the measurements.

A sensor interface is configured to receive a sensor signal. A transmitter generates a transmit signal. A receiver receives the signal corresponding to the transmit signal. Further, a monitor interface is configured to communicate a waveform to the monitor so that measurements derived by the monitor from the waveform are generally equivalent to measurements derivable from the sensor signal.

An electrode assembly for use with a subject, the assembly including, a substrate including at least one moveable substrate portion; first and second conductive elements provided on the substrate, the first and second conductive elements being spaced apart, and being adapted to provide an electrical connection to the subject; and, first and second terminals, each terminal being electrically coupled to a respective conductive element, and at least part of each terminal being provided on the at least one moveable substrate portion, such that movement of the substrate portion allows at least part of the terminal to extend away from the substrate to thereby facilitate connection of the terminal to a respective connector.

The present application discloses a PPG circuit, a biological characteristics detection device and a biological characteristics detection method. The PPG circuit is configured to control a light source and N photoelectric converters to sense biological characteristics of an object under test; the PPG circuit includes: a transmitting channel, K receiving channels, wherein the N photoelectric converters are divided into K sets of photoelectric converter sets, and the K receiving channels respectively correspond to K sets of photoelectric converter sets; and a controller, configured to control the PPG circuit to operate in a partial sampling phase or an full sampling phase, so as to generates J or K biological characteristics sampling results during each of the pulse repetition cycles.

The present application discloses a PPG circuit, a biological characteristics detection device and a biological characteristics detection method. The PPG circuit is configured to control a light source and N photoelectric converters to sense biological characteristics of an object under test; the PPG circuit includes: a transmitting channel, K receiving channels, wherein the N photoelectric converters are divided into K sets of photoelectric converter sets, and the K receiving channels respectively correspond to K sets of photoelectric converter sets; and a controller, configured to control the PPG circuit to operate in a partial sampling phase or an full sampling phase, so as to generates J or K biological characteristics sampling results during each of the pulse repetition cycles.

A re-wearable physiological monitoring device includes a reusable component and a disposable component. The reusable component includes an electronics module and a latching system for latching the reusable component to the disposable component. The disposable component includes an adhesive patch to be adhered to a user's skin, two electrodes to receive electrical signals from the user's skin, a cradle for the reusable component to be latched on, and a battery to power the device. The disposable component may include a battery disconnect switch for disconnecting the battery when the reusable component is not latched on; a gasket for isolating each contact between the reusable component and the disposable component in a waterproof enclosure; and a printed contact within the disposable component that is resistant to scratching. A latching system for the device may include two snap fasteners, alignment feet for keeping the reusable component aligned with the disposable component, and an asymmetrical wall to prevent the reusable component from being placed on the disposable component in the wrong orientation. A method of assembling the reusable component by ultrasonic welding is also disclosed.

Systems and methods for a patient monitoring system enable a hub (e.g., centralized computing device) to automatically receive data from varying different types of patient monitoring devices. In particular, the patient monitoring system may utilize polarity selection circuitry to automatically select (e.g., swap, switch) polarity of one or more input ports of the hub of the patient monitoring system. As such, the hub may include one or more universal ports to successfully receive or accept multiple different connectors of the varying patient monitoring devices that may include varying pin definitions.

Systems and methods for a patient monitoring system enable a hub (e.g., centralized computing device) to automatically receive data from varying different types of patient monitoring devices. In particular, the patient monitoring system may utilize polarity selection circuitry to automatically select (e.g., swap, switch) polarity of one or more input ports of the hub of the patient monitoring system. As such, the hub may include one or more universal ports to successfully receive or accept multiple different connectors of the varying patient monitoring devices that may include varying pin definitions.

Provided herein are systems and methods for calculating patient information. The method includes determining a transfer matrix, recording electric potentials via a first set of recording electrodes located at a first set of recording locations to create a first set of recorded signals, and calculating patient information for a set of target locations by applying the transfer matrix to the first set of recorded signals. The transfer matrix is a characterization of electrical properties of tissue between the first set of recording locations and the set of target locations.