Abstract:
The present invention relates to remote photoplethysmography and in particular to a system (1) and method for determining vital sign information of a subject (100). The system comprises a marker (10, 10', 30, 40, 50, 60, 70) for application to a skin (104) of the subject, said marker further comprising a first marker area (11, 11', 23, 34b, 41, 4b, 61b, 71b) configured to transmit light (A, B) at a first wavelength and a second marker area (12, 12', 24, 35b, 42, 55b, 62b, 72b) configured to transmit light (C, D) at a second wavelength, a detection unit (2, 22) for detecting radiation received from the first marker area and from the second marker area of the marker, and an analysis unit (6) for determining the vital sign information of the subject from the detected radiation from the first marker area and from the second marker area.
Abstract:
The present invention relates to a wearable device for acquiring physiological information of a subject. To combine the advantages of a contact sensor and a contactless sensor, the wearable device comprises an optical emitter (10) for emitting light into the subject's skin, an optical sensor (20) for receiving light scattered back from the subject's skin in response to the emission of light into the subject's skin, the received light representing or allowing the derivation of physiological information of the subject, and a carrier (30) for being held at the subject's skin and for carrying said emitter (10) and said sensor (20) such that a light receiving area (12), at which the emitted light enters the subject's skin, substantially corresponds to a light reflecting area (22), at which at least part of the scattered light leaves the subject's skin and is received by said optical sensor, the optical sensor (20) is arranged between the optical emitter (10) and the light receiving area (12) and is at least partially transparent for the light emitted by the optical emitter or the optical emitter (10) is arranged between the optical sensor (20) and the light reflecting area (22) and is at least partially transparent for the light reflected from the light reflecting area.
Abstract:
The present invention relates to the measurement of vital signs such as a respiratory rate or a heart rate. In particular, a system (1) for determining a vital sign of a subject (100), comprising an imaging unit (2) for obtaining video data of the subject, a marker (10, 20, 60, 61) directly or indirectly attached to a body of the subject, wherein the marker comprises a graphical pattern (11, 21), an image processing unit (3) for detecting said marker in said video data, and an analysis unit (4) adapted to extract a vital sign parameter related to the vital sign of the subject from said video data and to determine the vital sign from said vital sign parameter. Further aspects of the invention relate to a device and a method for determining a vital sign of a subject and a computer program for carrying out said method.
Abstract:
Techniques and systems for determining the correctness and validity of health- related data are described herein. In various embodiments, a signal may be transmitted using coded light or directed audio from at least one medical device (116) to a bedside unit (100). The signal may be modulated to carry health-related data acquired by the at least one medical device from a patient. The bedside unit may demodulate the signal to obtain the health- related data. The health-related data may then be correlated with patient information stored in a patients database (124). In some embodiments, a medical personnel may be authenticated to analyze the health-related data. Audio input that includes a result of the medical personnel's analysis may be received at the bedside unit. An indication of the result of the medical personnel's analysis may be stored, e.g., in the patients database.
Abstract:
Systems and methods for automatically performing one or more physiological measurements. In various embodiments, image and audio data of a setting in which a patient is present may be acquired via one or more recording devices (102). A determination may be made based on the acquired image and audio data of a state of activity associated with the patient. Based on the determined state of activity associated with the patient, a corresponding one or more physiological measurements of the patient to be obtained may be identified. One or more health sensors (122) may then be caused to be operated to obtain the corresponding one or more physiological measurements.
Abstract:
The present invention relates to a device, system and method for determining vital signs of a subject. To balance accuracy and reliability with unobtrusiveness, the device comprises an interface (30) for receiving input signals from a detection unit (18) that is configured for contactless detection of radiation reflected from a subject (14) in response to illumination by an illumination source (22), a processing unit (32) for deriving photoplethysmography, PPG, signals from the received input signals, an analysis unit (34) for deriving a desired vital sign from the PPG signals, and a control unit (36) for controlling one or more parameters of the illumination source (22), the detection unit (18) and/or the analysis unit (34) in dependence on the physical state of the subject, the quality of the input signals or the derived vital sign and/or the value of the vital sign.
Abstract:
The present invention relates to a system (1) and method for determining vital sign information (7) of a subject (100). The system comprises a marker (10, 10', 10'', 40) for application to the subject (100), wherein the marker (10, 10', 10'', 40) is configured to change an optical property due to a mechanical manipulation of the marker (10, 10', 10'', 40) caused by a physiological process of the subject (100), a detection unit (2) for detecting radiation from the marker (10, 10', 10'', 40), and an analysis unit (6) for determining the vital sign information (7) of the subject (100) from the detected radiation.
Abstract:
The present invention relates to a system for determining vital sign information (7) of a subject (100) and a marker (10, 10', 20, 30, 40, 60, 70, 80, 90) for use in determining vital sign information (7) of a subject (100). An embodiment of a marker comprises a marker area (11, 11 ', 22, 35, 36 42, 48, 65, 72, 82, 92) for emitting light towards a skin (104) of the subject (100) for determining vital sign information (7) from the reflected light, and attachment means (23, 43, 73) for attaching the marker (10, 10', 20, 30, 40, 60, 70, 80, 90) to the subject (100). An embodiment of a system further comprises a detection unit (2, 52) for detecting radiation emitted by the marker (10, 10', 20, 30, 40, 60, 70, 80, 90) towards a skin (104) of the subject (100) and reflected from the skin (104) of the subject (100), and an analysis unit (6) for determining the vital sign information (7) of the subject (100) from the detected radiation reflected from the skin (104) of the subject (100).
Abstract:
The present invention relates to a system and a related method for extracting physiological information from remotely detected electromagnetic radiation (18, 18a). The system comprises an interface (28) configured for receiving a data stream (26) comprising image data representing an observed overall region (54) comprising at least one subject of interest (12); a partitioning unit (32) configured for defining a plurality of sub regions (62) in the overall region (54); and a classifier (36) configured for classifying the plurality of sub regions (62) into at least one indicative type of region and at least one auxiliary type of region, wherein the at least one indicative type of region comprises at least one indicative region of interest (68) at least partially representing the subject of interest. Preferably, the at least one auxiliary type of region comprises at least one reference region (70, 72, 74). More preferably, the system further comprises a data processor (40) configured for processing at least one sub region (62) classified as region of interest (68), thereby obtaining vital information.