Abstract: An analyzing apparatus according to an embodiment of the present invention includes: a light source apparatus; an image sensor that generates color image data by capturing an image of biological tissue illuminated by light generated by the light source apparatus; an indicator calculation unit that calculates an indicator X that indicates a feature amount Q of the biological tissue, based on the color image data; and a feature amount acquisition unit that acquires the feature amount Q based on the indicator X. The feature amount acquisition unit includes a contribution calculation unit that calculates a contribution C based on at least two colors of single-color image data included in the color image data, the contribution C of scattering on a spectral characteristic of the biological tissue. Also, the feature amount acquisition unit acquires the feature amount Q based on the indicator X and the contribution C.

Abstract: A light source apparatus according to an embodiment of the present technology includes a white light source, a plurality of laser light sources, a detection unit, and a light source control unit. The white light source emits white light. The plurality of laser light sources emit a plurality of laser lights capable of adjusting a color temperature of the white light. The detection unit is capable of detecting a failure of each of the white light source and the plurality of laser light sources. The light source control unit controls an intensity ratio of the plurality of laser lights that are emitted from the plurality of laser light sources in a case where the failure of the white light source is detected.

Abstract: An illumination system for a surgical device is provided. The illumination system includes a tubular body made of a light permeable material and having at least one lumen extending between a distal end and a proximal end. The illumination system further includes a light source. At least one light diffusing optical fiber is disposed in the at least one lumen, the at least one light diffusing optical fiber having a core, primary cladding, and a plurality of nano-sized structures, the optical fiber further including an outer surface, and an end optically coupled to the light source. The fiber is configured to scatter guided light via the nano-sized structures away from the core and through the outer surface, to form a light-source fiber portion having a length that emits substantially uniform radiation over its length.

Abstract: A scanning endoscope including an optical fiber scanner that vibrates a distal end of the optical fiber that guides illumination light and emits the illumination light from the distal end thereof, a controller that conducts control for vibrating the optical fiber at a certain driving frequency set according to a resonance frequency of the optical fiber and for controlling amplitude of the vibration so as to be changed at a certain modulation frequency, and a movement detector that detects the resonance frequency of the optical fiber, wherein the controller changes the driving frequency and the modulation frequency at the same rate as the rate of change of the resonance frequency when the resonance frequency of the optical fiber detected by the movement detector changes.

Abstract: An endoscope reprocessor includes a concentration sensor including a concave section in which a sensing section is housed and a permeable membrane configured to cover the concave section, a medicinal solution tank, to an inside of which at least the permeable membrane is exposed and on the inside of which a disinfection solution is stored, and a heating section configured to heat at least the permeable membrane.

Abstract: An endoscope reprocessor includes a concentration sensor including a concave section in which a sensing section is housed and a permeable membrane configured to cover the concave section, a pressure resistant container in which the concentration sensor is housed, a medicinal-solution lead-in section configured to introduce a medicinal solution into the pressure resistant container, and a pressure adjusting section configured to adjust pressure such that an internal pressure of the concave section is low compared with an internal pressure of the pressure resistant container.

Abstract: Disclosed is a dental exam tool for attaching to a mobile electronic device. The dental exam tool can include a coupling element that securely and removably couples to a body portion of the mobile electronic device and a dental mirror retention element coupled to the coupling element. Also disclosed is a dental exam system for teledentistry. The dental exam system can include a dental exam tool for attaching to a mobile electronic device and a mobile electronic device, having a camera, wherein the mobile electronic device is capable of capturing still images and/or video from the camera and storing and/or transmitting the images and/or video captured.

Abstract: Embodiments of the present disclosure disclose a method and a computing unit for imaging of wider angle fundus of an eye of a subject. The method discloses guiding placement of an imaging device at set of predetermined locations on the eye. The method further comprises receiving set of images of the fundus of the eye upon determining the imaging device to be at least one of the set of predetermined locations, wherein the set of images are captured by the imaging device upon receiving instructions from the computing unit. The method further comprises determining quality of the set of images and concatenating the one or more images to provide a wider angle target image of the fundus of the eye.

Abstract: A method for imaging retinal structures involves offsetting an imaging aperture from the center of the reflected/scattered light distribution. Images are obtained with the imaging aperture at multiple offsets with respect to the center. The various obtained images are co-registered to a reference confocal image in a reference wavelength and averaged to generate high signal to noise ratio images. The images may be combined in various ways to enhance the contrast of retinal structures that would not be visible in confocal images.

Abstract: A device is for screening a person for CI and may include a binocular viewer, a display adjacent the binocular viewer, and a processor and associated memory cooperating with the display. The processor may be configured to display on the display a first visual stimulus and a second visual stimulus, cause, in alternating fashion, convergent movement and divergent movement in the first visual stimulus and the second visual stimulus along a visual stimulus path, determine respective centroid positions of the second eye and the first eye during the convergent and divergent movement of the first visual stimulus and the second visual stimulus, and calculate an IPD, and compare the IPD with the visual stimulus path to obtain a dynamic IPD, the dynamic IPD serving as an indicator for whether the person has CI.

Abstract: A vision assistance method implemented on a digital display device provides a test image for display to a user on a display of the graphical user interface of the device, and an adjustment interface, configured to be displayed adjacent to the test image on the display and enables the user to input visual adjustment settings to adjust the test image. The test image is then automatically adjusted by a processor of the device by applying the adjustment settings. A profile of the user is generated including the desired visual adjustment settings iteratively selected by the user. An input image is subsequently received and the processor then automatically adjusts the input image based upon visual adjustment data corresponding to the selected desired visual adjustment settings. The adjusted input image is then displayed on the display and to the user.

Abstract: A control apparatus of an imaging apparatus, includes a selection unit configured to select an image-capturing site of a subject to be examined, a control unit configured to control adjustment of a member of the imaging apparatus, according to the selected image-capturing site, and a determination unit configured to determine whether to perform the adjustment or not in response to a change of image-capturing sites through the selection by the selection unit, based on image-capturing conditions for the image-capturing sites before and after the change of the image-capturing sites.

Abstract: An eye surgery system 1 comprises microscopy optics 3 and an OCT device 5 to generate a light-optical image and an OCT image of an eye fundus 11, a controller 29 and a visualization system 13, 41, 83. The controller comprises a data interface 97 for receiving a preoperative OCT image and may control the visualization system to display a representation of the received preoperative OCT image. The controller may control the OCT device 5 to record an intraoperative OCT image and may control the visualization system to display a representation of the recorded intraoperative OCT image. The controller may adjust a magnification of the representation of the intraoperative OCT image and/or a magnification of the representation of the preoperative OCT image so that the magnifications of the representation of the intraoperative OCT image and the magnification of the representation of the preoperative OCT image are equal.

Abstract: A device is for screening a person for CI and may include a binocular viewer, a display adjacent the binocular viewer, and a processor and associated memory cooperating with the display. The processor may be configured to display on the display a first visual stimulus and a second visual stimulus, cause, in alternating fashion, convergent movement and divergent movement in the first visual stimulus and the second visual stimulus along a visual stimulus path, determine respective centroid positions of the second eye and the first eye during the convergent and divergent movement of the first visual stimulus and the second visual stimulus, and calculate an IPD, and compare the IPD with the visual stimulus path to obtain a dynamic IPD, the dynamic IPD serving as an indicator for whether the person has CI.

Abstract: [Problem] To allow imaging light to be appropriately received by a second camera in the case where a first imaging mode (color imaging mode) is changed to a second imaging mode (autofluorescence imaging mode). [Solution] In the first imaging mode, using a dichroic mirror 30 allows light LB to be received by both a first camera C1 and a second camera C2. In the second imaging mode, using a transparent glass 31 allows light LB to be received by the second camera C2. With this configuration, both in the first imaging mode and in the second imaging mode, light LB from an ocular fundus is appropriately received by the second camera C2 whereby an appropriate ocular fundus image can be taken.

Abstract: In one embodiment, a machine-vision enabled fundoscope for retinal analysis includes, but is not limited to, an optical lens arrangement; an image sensor positioned with the optical lens arrangement and configured to convert detected light to retinal image data; computer readable memory; at least one communication interface; and an image processor communicably linked to the image sensor, the computer readable memory, and the at least one communication interface, the image processor programmed to execute operations including at least: obtain the retinal image data from the image sensor; generate output data based on analysis of the retinal image data, the output data requiring less bandwidth for transmission than the retinal image data; and transmit the output data via the at least one communication interface.

Abstract: An ophthalmic analysis apparatus for analyzing OCT motion contrast (MC) image data of a subject's eye acquired using an OCT apparatus for ophthalmology includes analysis process means for analyzing the OCT MC image data, in which the analysis process means generates OCT blood vessel change data including temporal change information in relation to a blood vessel region of the subject's eye based on first OCT MC image data and second OCT MC image data acquired at mutually different times.

Abstract: An ocular alignment system for aligning a subject's eye with an optical axis of an ocular imaging device comprising one or more guide light and one or more baffle configured to mask the one or more guide light from view of the subject such that the one or more guide light is only visible to the subject when the eye of the subject is aligned with the optical axis of an ocular imaging system.

Abstract: An optical measurement system: passes a probe light beam through a variable focal length lens to the retina of an eye, and returns light from the retina through the variable focal length lens to a wavefront sensor; adjusts the focal length of the variable focal length lens to provide a desired characteristic to at least one of: the probe light beam, and the light returned by the retina to the wavefront sensor; passes a calibration light through the variable focal length lens to the wavefront sensor while the variable focal length lens is at the adjusted focal length to ascertain the adjusted focal length; and makes a wavefront measurement of the eye from the light returned from the retina of the eye through the variable focal length lens to the wavefront sensor, and from the adjusted focal length ascertained from the calibration light received by the wavefront sensor.

Abstract: A subjective optometry apparatus includes subjective measurement unit for subjectively measuring an optical characteristic of a subject eye, the subjective measurement unit including a calibration optical system that is disposed in an optical path of a light projecting optical system projecting a visual target luminous flux toward the subject eye and changes an optical characteristic of the visual target luminous flux. The subjective optometry apparatus includes objective measurement unit for objectively measuring the optical characteristic of the subject eye, the objective measurement unit including a measurement optical system that emits measurement light to a fundus of the subject eye and receives reflected light of the measurement light.

Abstract: Embodiments are related to systems and methods for data determining information about a subject, and more particularly to systems and methods for utilizing and distributing information related to measurements of a human subject.

Abstract: Methods and systems for providing data communication in medical systems are disclosed.

Abstract: A method for producing a magnetic resonance image of a subject tissue to identify a lesion or scar tissue thereon in provided. The method includes acquiring an initial three-dimensional image of the subject tissue by a computer-implemented MRI system; identifying the surface of the subject tissue by the computer-implemented MRI system; selecting one or more points on the surface of the subject tissue by the computer-implemented MRI system; and acquiring by the computer-implemented MRI system, a first two-dimensional image for at least one of the selected points that is substantially tangential to the surface of the selected point.

Abstract: The present invention relates to a torsional vibration resonance frequency measuring method and a novel amplitude transformer for assessing the stability of dental implants. In one example, a torsional vibration resonance frequency measuring method includes installing an amplitude transformer on a dental implant, energizing a torsional vibration mode, gathering resonance signals, and analyzing a resonance frequency. In another example, an amplitude transformer for measuring torsional vibration resonance frequency in a dental implant, includes an anti-rotary horizontal double-winged component and a central bolt. The central bolt is configured to closely connect with the inner threads of the dental implant, such that the amplitude transformer can integrate with the dental implant sufficient to vibrate as an integral structure under energizing.

Abstract: A wearable tremor reduction device reduces tremor by internally generating forces which cancel or reduce the magnitude force of the tremor experienced by the person wearing the device. The device may be worn on a wrist, arm, ankle or leg. The device has a plurality of housing members which are flexibly connected together. Each housing member contains a mass which is translatable along an axis between a proximal limit and a distal limit, and a neutral position midway between the proximal limit and the distal limit. Following imposition of a force having a component along the axis, a biasing means returns the mass to the neutral position.

Abstract: Some embodiments relate to a device, method, and/or computer-readable medium storing processor-executable process steps to remove a component of a signal corresponding to ambient light in a photoplethysmographic sensor device, including capturing a first detected light signal representing an ambient light at a first time, causing a light emitter to generate a source light signal driven at a first level, capturing a second detected light signal representing the source light signal after interacting with a user's tissue plus the first detected light signal, generating a first output signal based on the second detected light signal adjusted by the first detected light signal, causing the light emitter to generate a source light signal driven at a second level, capturing a third detected light signal representing the source light signal driven at the second level after interacting with the user's skin plus the first detected light signal, and generating a second output signal based on the third detected light sig

Abstract: A photo-acoustic sensing apparatus (100) for non-invasive measurement of blood parameters of a subject (102) comprises a photo-acoustic sensor (104) for sensing photo-acoustic signals (106) induced when a region of the subject is illuminated by a light source (108). A first sensor processing module (112) may derive blood oxygen saturation using sensed photo-acoustic signals (114). A second sensor processing module (116) may derive blood core temperature using sensed photo-acoustic signals. A third sensor processing module (118) may derive blood glucose using sensed photo-acoustic signals. The sensing apparatus is configured to derive at least one of: a de-correlated value (120) of blood oxygen saturation of the subject; a de-correlated value (122) of blood core temperature of the subject; and a de-correlated value (124) of blood glucose of the subject.

Abstract: Systems comprising a combination of the handheld imaging system with a nanoparticle multimodal contrast agent are disclosed. The imaging system exploits the advantages of both near-infrared emission and the photoacoustic effect by employing calcium phosphosilicate nanocolloid that encapsulates NIR and CT/MRI contrast agents for enhanced deep tissue imaging as well as a portable NIR/PA system using a tunable pulsed laser, CCD imaging technology and acoustic transducer arrays. Methods for using the system, for example in rapid diagnosis of trauma such as that inflicted on a battlefield, are provided.

Abstract: A core body thermometer includes a substrate, a heat receiving terminal with which heat from a subject is received and which divides the heat into first heat flow and second heat flow and causes the first heat flow and the second heat flow to flow out, a first heat flow measurement system that measures the first heat flow using a first input-side temperature sensor and a first output-side temperature sensor, a second heat flow measurement system that measures the second heat flow using a second input-side temperature sensor and a second output-side temperature sensor, a first thermal resistance body provided between the heat receiving terminal and the first input-side temperature sensor, and a second thermal resistance body provided between the heat receiving terminal and the second input-side temperature sensor.

Abstract: A handheld measurement device includes a temperature detector for measuring infrared energy of a mammal; a location determination mechanism for determining a location of said device when in use; memory storing measured temperature and corresponding location information; and a communication mechanism constructed and adapted to send multiple stored measured temperature and corresponding location data to a remote location.

Abstract: An apparatus includes a posture sensing circuit configured to detect a change in posture of a subject; a cardiac signal sensing circuit configured to generate a sensed cardiac signal, wherein the sensed cardiac signal includes heart rate information of the subject; a physiologic sensing circuit configured to generate a sensed physiologic signal, wherein the physiologic signal includes information related to blood pressure of the subject; a storage buffer; and a control circuit operatively coupled to the posture sensing circuit and the storage buffer. The control circuit is configured to initiate storage of the heart rate information and the information related to blood pressure in response to a detected change in posture of the subject.

Abstract: A biological information detection device includes: a light-emitting unit that emits light to a subject; a light-receiving unit that receives reflected light or transmitted light from the subject; and a current control unit that supplies the light-emitting unit with a current signal for causing the light-emitting unit to emit the light. For a first period of a light emission period of the light-emitting unit, the current control unit supplies the light-emitting unit with the current signal with a current value greater than for a second period of the light-emission period.

Abstract: Systems are provided for detecting the flow of blood or other fluids in biological tissue by illuminating the biological tissue with a coherent light source and detecting time-varying patterns of constructive and destructive interference in light received from portions of the biological tissue by an imager. The movement of blood cells and other light-scattering elements in the biological tissue causes transient, short-duration changes in light emitted from portions of the biological tissue proximate to the moving blood cells or other scatterers. High-frequency sampling or other high-bandwidth processing of light intensities detected by an imager could be used to determine the flow of blood or other fluids at a plurality of points in the biological tissue, to detect and/or localize a tumor in the biological tissue, to determine the location, pattern, width, or other properties of vasculature in the biological tissue, or to provide information for some other application(s).

Abstract: A physiological status monitoring system includes a clothing and a mobile device. The clothing has a display unit connected to the outside thereof, and a sensor is located in the clothing. The sensor includes a control unit, an emitting unit and a power supply unit received therein. The control unit has a flashing program, a warning program, a safety program and a racing program written therein. The wearer holds the mobile device which is connected to the sensor wirelessly and has a receiving unit. The sensor detects physiological data of the wearer, and the physiological data of the wearer is displayed on the display unit. The physiological data of the wearer is also sent to the mobile device. The wearer can be acknowledged his/her physiological status.

Abstract: Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, first and second patient signal data are received from a patient monitor. The first and second patient signal data may then be segmented into respective first and second regions of interest, from which respective first and second waveform parameters may be extracted. One or more morphology indices may then be generated based on the first and second waveform parameters to compare shapes of the first and second regions of interest.

Abstract: A handheld electrocardiographic measurement device includes a substantially spheroidal body, a stopper projecting along an axial direction of the body to restrict a position of a thumb of one hand by abutting on a side surface of the thumb when a user grips the body with the one hand, a plate-shaped flange projecting from a side surface of the body in a direction orthogonal or substantially orthogonal to a projecting direction of the stopper, a first electrocardiographic electrode disposed on a back side of the body to touch a finger of the one hand when the body is gripped with the one hand, and a second electrocardiographic electrode disposed on a surface of the flange to touch a finger of the other hand when the flange is pinched by the other hand.

Abstract: Disclosed are wearable devices, such as rings and bracelets, for monitoring and diagnosing cardiovascular conditions of a wearer, along with related systems, algorithms and methods. The disclosed wearable devices can continuously monitor the wearer's cardiovascular status by measuring heart rate, motion, blood oxygenation, and/or other properties of the wearer. Disclosed wearable devices can further comprise three EKG electrodes, including a first electrode on the inner surface adapted to detect a signal from the finger/wrist, a second electrode on the outer surface adapted to detect a cardiovascular signal from a finger of the opposing hand, and a third electrode on the outer surface of the frame adapted to detect a cardiovascular signal from a EKG lead location on the wearer's chest or leg. The wearable devices can be linked wirelessly to a mobile device that the person can interact with, and can further be linked to other distributed system components and healthcare providers.

Abstract: A standing motion assist device includes a support mechanism attached to a leg of a user to assist the user with motion, a sensor including first and/or second sensors that measure and output posture information and myoelectric potentials of the user, respectively, the sensor outputting measurement data including first measurement data measured after a sitting motion of the user sitting in a chair starts and second measurement data measured after the sitting motion ends, a memory that stores the measurement data, and a processor that controls the support mechanism. The processor detects the sitting motion and identifies the chair type based on the first measurement data, detects the start of a motion of the user standing from the chair based on the second measurement data, and outputs assist information corresponding to the identified chair type and used by the support mechanism to assist the user with standing.

Abstract: Some embodiments described herein relate to a method that includes defining an electro-anatomical model of a heart. The electro-anatomical model can include conduction patterns for multiple patterns or phases identified by a measurement instrument. The electro-anatomical model can also include a voltage map of the heart. A portion of the heart containing a rotor can be identified based on circulation in one phase of the model. The rotor can be determined to be stable based on that portion of the heart having circulation in another phase of the model. The rotor can be characterized as a substrate rotor based on the rotor being stable and based on the voltage or a change in voltage at the portion of the heart containing the rotor. The rotor can be treated or ablated when the rotor is determined to be a substrate rotor.

Abstract: A high density mapping and ablation catheter includes a tip electrode positioned at its distal end and a plurality of electrodes (e.g., ring electrodes, ring-segment electrodes, spot electrodes, and/or printed traces) disposed proximally of the tip electrode within the distal region. A plurality of conductors extending through the elongate catheter body to electrically connect the tip electrode and other electrodes to a source of ablation energy, an electrophysiology mapping device, and/or a programmable electric stimulator. A switching circuit can be employed, for example to enable a practitioner to selectively activate certain electrodes for ablation, for electrophysiological mapping, for pacing, or to deactivate certain electrodes entirely.

Abstract: An apparatus includes a cardiac signal sensing circuit configured to generate a sensed cardiac signal representative of electrical cardiac activity of a subject, a buffer memory and a pause detection circuit. The pause detection circuit is configured to: identify ventricular depolarization in the cardiac signal or the sampled cardiac signal; detect a candidate pause episode using the cardiac signal in which delay in ventricular depolarization exceeds a specified delay threshold; identify noise events in a stored cardiac signal; and discard the cardiac signal of the candidate pause episode when a number of noise events satisfies a specified noise event number threshold, otherwise store the cardiac signal of the candidate pause episode as a bradycardia pause episode.

Abstract: A method and system for R-R interval measurement of a user are disclosed. In a first aspect, the method comprises detecting an electrocardiogram (ECG) signal of the user. The method includes performing QRS peak detection on the ECG signal to obtain a low resolution peak and searching near the low resolution peak for a high resolution peak. The method includes calculating the R-R interval measurement based upon the high resolution peak. In a second aspect, a wireless sensor device comprises a processor and a memory device coupled to the processor, wherein the memory device includes an application that, when executed by the processor, causes the processor to carry out the steps of the method.

Abstract: A method for assessing nerve fiber excitability is disclosed. The method comprises: arranging an electrode in contact with skin of a person; determining a first and a second threshold value based on a stimulation current pulse of a first and a second waveform, respectively; wherein said determining of the first threshold value and said determining of the second threshold value each comprises: repeatedly providing a stimulation current pulse of the first or second waveform, respectively, through the electrode, wherein a stimulation current strength is altered between repetitions; and receiving signals from an interaction element with which the person interacts, said signals from the interaction element providing an indication of the first threshold value or the second threshold value, respectively, corresponding to a stimulation current strength necessary to be perceived by the person; and determining at least one measure of psychophysical perception based on the determined first and second threshold values.

Abstract: Systems, articles, and methods for surface electromyography (“EMG”) sensors that combine elements from traditional capacitive and resistive EMG sensors are described. For example, capacitive EMG sensors that are adapted to resistively couple to a user's skin are described. Resistive coupling between a sensor electrode and the user's skin is galvanically isolated from the sensor circuitry by a discrete component capacitor included downstream from the sensor electrode. The combination of a resistively coupled electrode and a discrete component capacitor provides the respective benefits of traditional resistive and capacitive (respectively) EMG sensor designs while mitigating respective drawbacks of each approach. A wearable EMG device that provides a component of a human-electronics interface and incorporates such capacitive EMG sensors is also described.

Abstract: A method for measuring an intracranial bioimpedance in a patient's head, to help evaluate cerebral autoregulation, may involve securing a volumetric integral phase-shift spectroscopy (VIPS) device to the patient's head, measuring the intracranial bioimpedance with the VIPS device by measuring a phase shift between a magnetic field transmitted from a transmitter on one side of a VIPS device and a magnetic field received at a receiver on another side of the VIPS device, at one or more frequencies, and evaluating cerebral autoregulation in the intracranial bioimpedance, using a processor in the VIPS device.

Abstract: A pediatric magnetic resonance imaging (MRI) system includes a magnet (9), an isolette (14) including a patient section for accommodating a patient, the isolette positionable relative to the magnet; and a radio frequency (RF) array (10) positionable within the patient section of the isolette (14). The RF array (10) includes a plurality of coils configured for simultaneous imaging of different portions of a patient, the plurality of coils being distinct from one another.

Abstract: Intraluminal devices with deployable elements are described. An intraluminal device includes, but is not limited to, a shell dimensioned and structured to travel through a biological lumen of a subject; and at least one deployable element, the at least one deployable element being actuatable from a first configuration to at least a second configuration, wherein the at least one deployable element extends further outwards from the shell in the second configuration than in the first configuration.

Abstract: A spirometer comprises a housing defining a fluid flow pathway extending between a first end and a second end, a first opening along the pathway and a second opening longitudinally spaced along the pathway from the first opening. A flow chamber defining a fluid flow pathway is disposed within the housing between the first opening and the second opening, the flow chamber including an elongated resistive element along the central longitudinal axis of the flow chamber for defining a flow passage through the flow chamber between the resistive element and the inner surface of the flow chamber. The flow chamber conditions fluid flow for accurate sensing of the fluid flow over a range. A pressure sensor is disposed within the housing in fluid communication with the first opening and the second opening for sensing a pressure differential between the first opening and the second opening and producing an electric signal that corresponds with the rate of fluid flow through the housing.

Abstract: Peak flow meters are often used by asthma patients to monitor their physical condition. It is imperative that a peak flow meter is conducive to patient usage and recording. A peak flow meter with a tube and rotary fin for use with a mobile device is described. The peak flow meter receives air from the patient through the tube which spins the rotary fin. The peak flow meter physically attaches to a mobile device. The rotation of the rotary fin interrupts the light going into the camera or light sensor of the mobile device. The rate of the interruption is converted to airflow measurement that is displayed to the user, saved to the mobile device, and uploaded to cloud storage.

Abstract: For generating a breathing alert, a method captures a video stream of a subject. The method further generates a vector time series that includes a vector for each image frame of the video stream. The method estimates of breathing signal from the vector time series. The method further determines one of large-scale motion and a breathing event of the subject based on the breathing signal. The method generates an alert if no breathing event is identified and no large-scale motion of the subject is identified within an event time interval.