Abstract: The present invention provides techniques for measuring one or more parameters of a subject using a probe having an optical assembly configured and operable for applying optical measurements to a measurement location in a subject and generating optical measured data indicative thereof comprising at least one of pulsatile and occlusion measurements, a pressure system configured and operable for controllably applying pressure to the subject in the vicinity of the measurement location and measuring pressure inside the pressure system and generating pressure data indicative thereof, and a control system configured and operable for receiving and processing the pressure data to identify whether the optical measured data is valid, and for processing the valid optical measured data and determining at least one relation between the valid optical measured data and the corresponding pressure data indicative of at least one parameter of the subject.

Abstract: The present invention provides techniques for measuring one or more parameters of a subject using a probe having an optical assembly configured and operable for applying optical measurements to a measurement location in a subject and generating optical measured data indicative thereof comprising at least one of pulsatile and occlusion measurements, a pressure system configured and operable for controllably applying pressure to the subject in the vicinity of the measurement location and measuring pressure inside the pressure system and generating pressure data indicative thereof, and a control system configured and operable for receiving and processing the pressure data to identify whether the optical measured data is valid, and for processing the valid optical measured data and determining at least one relation between the valid optical measured data and the corresponding pressure data indicative of at least one parameter of the subject.

Abstract: A Photoplethysmography-based sensor for measuring heart rate is provided herein. The sensor may include a first light source and a second light source configured to illuminate a body tissue by a first light and a second light respectively; and a first and a second light detectors, each configured to detect light comprising portions of said first light and of said second light, transferred through the body tissue; and a processor with an analog measurement part configured to: receive light intensity readings of at least a portion of light as sensed by each one of both sensors and coming from each one of both sources; and calculate a measure of tissue absorption based on ratios of light portions transmitted by each one of both sources and measured by each one of both detectors.

Abstract: A blood oxygen saturation level (SpO2) measurement subunit employed in a wireless transceiver unit connected to a medical monitor unit. An illumination emulator is used for emulating the characteristics of an illumination source of a pulse oximeter. The emulator utilities at least part of the energy coming from the SpO2 socket of the medical monitor. Energy originally intended to energize one illumination source of the pulse oximeter, energizes the power supply circuitry. A processor is employed for processing information about pulsing arterial blood of a patient received from a patient companion assembly (PCA). A digital to analogue converter is used for converting the PCA, to analogue signal. A low pass filter (LPF), filtering the signal to form a pulsative voltage signal represents the pulsing arterial blood of the patient, and is sent to the SpO2 socket of the medical monitor for displaying and further processing.