A method of deriving one or more individual thoracic parameters of a subject. The method comprises instructing a subject to perform a thoracic volume manipulation, receiving a plurality of measurements of a plurality of EM signals from a thoracic intrabody area of lungs of the subject during the thoracic volume manipulation, deriving a plurality of thoracic volume values at a plurality of different intervals during the thoracic volume manipulation so that each the thoracic volume value correspond with another of a plurality of estimated thoracic volumes achieved during the thoracic volume manipulation, and calculating at least one individual thoracic parameter of the subject by combining between the plurality of measurements and the plurality of thoracic volume values.

A method and apparatus for the treatment of Sleep Apnea events and Hypopnea episodes wherein one embodiment comprises a wearable, belt like apparatus containing a microphone and a plethysmograph. The microphone and plethysmograph generate signals that are representative of physiological aspects of respiration, and the signals are transferred to an imbedded computer. The embedded computer extracts the sound of breathing and the sound of the heart beat by Digital Signal Processing techniques. The embedded computer has elements for determining when respiration parameters falls out of defined boundaries for said respiration parameters. This exemplary method provides real-time detection of the onset of a Sleep Apnea event or Hypopnea episode and supplies stimulation signals upon the determination of a Sleep Apnea event or Hypopnea episode to initiate an inhalation. In one embodiment, the stimulus is applied to the patient by a cutaneous rumble effects actuator and/or audio effects broadcasting.

A device non-invasively measures aortic flow in the subdiaphragmatic region in a small laboratory mammal. The device includes a device for plethysmography of the thorax by inductance measurement, having two electrically conducting, extendible coils rigidly attached to an elastic garment that is adjustable to the torso of the mammal, a device for acquiring the signal from variation in the cross-section of each coil, and a processor configured to calculate the instantaneous subdiaphragmatic aortic flow of the mammal from the signals from the variation in cross-section of each coil and from a functional model of the cardiorespiratory system. The exchanges of blood between the thorax and the rest of the body of the mammal include an output of blood via the abdominal aorta in the subdiaphragmatic region and an input of blood via the inferior vena cava.

Systems and methods for non-invasive blood pressure measurement are disclosed. In some embodiments, a system comprises a wearable member configured to generate first and second signals, and a blood pressure calculation system. The blood pressure calculation system a pre-processing module configured to filter noise from the signals, and a wave selection module configured to identify subsets of waves of the signals, a feature extraction module configured to generate sets of feature vectors form the subsets of waves, and a blood pressure processing module configured to calculate an arterial blood pressure value based on the sets of feature vectors and an empirical blood pressure calculation model, the empirical blood pressure calculation model configured to receive the sets of feature vectors as input values. The blood pressure calculation system further includes a communication module configured to provide a message including or being based on the arterial blood pressure value.

The present disclosure relates to the field of medical monitoring, and, in particular, to non-contact detecting and monitoring of patient breathing. Systems, methods, and computer readable media are described for calculating a change in depth of regions in one or more regions of interest (ROI's) on a patient and assigning one or more visual indicators to the regions based on the calculated changes in depth of the regions over time. In some embodiments, one or more breathing parameter signals corresponding to the regions can be generated and/or analyzed. In these and other embodiments, the one or more visual indicators can be displayed overlaid onto the regions in real-time. In these and still other embodiments, the systems, methods, and/or computer readable media (i) can display one or more generated breathing parameter signals in real-time and/or (ii) can trigger an alert and/or an alarm when a breathing abnormality is detected.

The present disclosure provides a method and device for monitoring a breathing flow based on thoracic and abdominal movements. The method includes: acquiring pressure values of pressure monitoring points of a patient, where the pressure monitoring points include a chest pressure monitoring point and an abdomen pressure monitoring point; performing data analysis based on the pressure values to determine displacement variations of the pressure monitoring points relative to initial spatial coordinates; performing nonlinear fitting based on the displacement variations to determine a thoracic volume variation and an abdominal volume variation; and determining breathing parameters based on the thoracic volume variation and the abdominal volume variation, where the breathing parameters include a total pulmonary ventilation volume, a thoracic breathing contribution ratio, an abdominal breathing contribution ratio, and a thoracic and abdominal phase difference. The present disclosure allows for breathing flow monitoring with a low cost and high accuracy.

The present invention provides, among other things, apparatus and methods of use for treating a subject in need of assistance with breathing. In some embodiments the subject suffers from airflow obstruction. In some embodiments, the subject suffers from chronic obstructive pulmonary disease.

The present invention relates to a system (10) for monitoring a vital sign of a first subject (12), for example, a neonate, which is in proximity or in contact with a second subject (14), for example, a parent. The system comprises an imaging unit (16) for monitoring the first subject (12) from a distance, to obtain an imaging signal related to a first vital sign of the first subject (12), this imaging unit (16) might be, for example, a camera. The system further comprises a sensing unit (18) for obtaining a sensor signal related to a second vital sign of the second subject (14). The sensing unit (18) is arranged in proximity or at the second subject (14). The first vital sign is of the same type as the second vital sign, thus an analyzing unit (20) can be used for deriving the first vital sign of the first subject (12) from said imaging signal by taking into account said sensor signal.

A medical image-processing apparatus of embodiments includes processing circuitry. The processing circuitry extracts plural regions corresponding to at least one of a lobe and a subsegment forming a lung from three-dimensional medical-image data that is acquired by imaging in temporal order. The processing circuitry calculates a physical index relating to respiratory activity for each of the extracted regions. The processing circuitry detects an abnormal region having an abnormality relating to the respiratory activity out of the regions by comparing temporal changes of the physical index of the respective regions. The processing circuitry outputs information indicating about the abnormal region.

Systems and methods for determining if a wearable photoplethysmography device is correctly positioned in operating to medical signs of a user by using a classifier to determine if a signal is valid or invalid. In some embodiments, in using the classifier to determine in a signal is valid or invalid, a lean method of linear computational complexity and minimal memory complexity is provided for determining at the wearable photoplethysmography device if it is correctly positioned. In some embodiments, in using the classifier minimal computational complexity is used in determining at the wearable photoplethysmography device if it is correctly positioned.