Facense Ltd.

Ori Tzvieli

Gil Thieberger

Ari M Frank

Arie Tzvieli

Tal Thieberger-Navon

Due to the many interactions that can occur in places of gatherings, such as workplaces, schools, theaters, etc., these locations can be considered dangerous to enter during times of epidemics. It is difficult to keep track of the health state of all the people who visited a location, and thus ascertain if visits to the location pose any risk of contracting a disease. Some embodiments disclosed herein utilize wearable devices that measure physiological signals of their wearer in order to determine whether people who were at a location were healthy, and thus be able to certify the location as contagion-safe.

Wearable-based certification of a premises as contagion-safe

Disclosed herein is a doorway that facilitates passage from an inside to an outside, and which includes a barrier that moves between opened and closed positions based on commands sent by a computer. Sensors measure signals indicating whether a first user is on the outside, and whether a second user on the inside. The computer detects that the first user is on the outside and receives, from a device of the first user, an indication indicating the first user is healthy. The computer detects whether the second user is on the inside, and commands the barrier to move to the opened position if: (i) the second user is not on the inside, or (ii) the second user is on the inside and the computer receives, from a device of the second user, an indication indicating the second user is healthy.

Doorway system that utilizes wearable-based health state verifications

Embodiments disclosed herein utilize biometric verification from wearable devices to approve access for shared spaces. Requests to occupy the shared spaces are received and conditional reservations are made pending health checks of the requesters. Prior to occupation, fresh biometric measurements are captured via the user's wearable device, which include physiological signals validating both ongoing good health as well as identity match to the original requester. When recent biometric verification indicates both healthy status and unchanged identity, access to the reserved space is approved. These embodiments securely manage reservations while protecting the health of other occupants through conditional access related to the requester's current health condition.

Reservation booking using wearable-based health state verifications

Described herein are embodiments of systems and methods that utilize images of a user's face to detect alcohol intoxication. One embodiment of a system to detect alcohol intoxication includes first and second inward-facing head-mounted cameras that are located less than 5 cm from a user's face, are sensitive to wavelengths below 1050 nanometer, and are configured to capture images of respective first and second regions on the user's face. The system also includes a computer that calculates, based on baseline images captured with the cameras while the user was not intoxicated, a baseline pattern of hemoglobin concentrations at regions on the face. The computer also calculates, based on a current set of images captured with the cameras, a current pattern of hemoglobin concentrations at the regions, and detects whether the user is intoxicated based on a deviation of the current pattern from the baseline pattern.

Detecting alcohol intoxication from video images

Embodiments disclosed herein involve a wearable-based system that can help determine in a privacy-preserving manner whether a user is healthy (and thus poses low risk of contagiousness), and use determinations of this nature to grant passage through a doorway. In one embodiment, a wearable device takes measurements of a user comprising a photoplethysmogram signal (PPG signal) and a temperature measurement. A computer calculates a health score based on a difference between baseline measurements of the user, measured one or more days earlier, and more current measurements of the user. Additionally, the computer calculates an extent of similarity between characteristics of the PPG signal in the current measurements and characteristics of the PPG signal in the baseline measurements. The computer authorizes the user's passage through the doorway responsive to the health score reaching a first threshold and the extent of the similarity reaching a second threshold.

Wearable-based health state verification for physical access authorization

A novel design for untethered smartglasses with wireless connectivity in which electronic components and electric wiring are mounted in a manner than enables at least a portion of temples of the smartglasses to be bent around the ear to improve the smartglasses' fit. In one embodiment, the smartglasses include a front element that supports lenses and two temples, coupled to the front element through hinges that enable folding and unfolding. At least one of the temples includes: a first portion coupled to the front element with first electronic components, a second portion coupled to the first portion with electric wires, and a third portion coupled to the second portion with second electronic components. The second portion is designed to be bent around a human ear to improve the smartglasses' fit, and the first and third portions are not designed to be bent to improve the smartglasses' fit.

Smartglasses with bendable temples

Described herein are embodiments of systems and methods that utilize temperature measurements taken with head-mounted sensors as well as images of a user's face to detect fever and/or intoxication. One embodiment of a system to detect fever includes a first head-mounted temperature sensor that measures skin temperature (T) at a first region on a user's head, a second head-mounted temperature sensor that measures a temperature of the environment (T), and a computer. The computer receives images of a second region on the user's face, captured by a camera sensitive to wavelengths below 1050 nanometer, and calculates, based on the images, values indicative of hemoglobin concentrations at three or more regions on the user's face. The computer can then detect whether the user has a fever based on T, Tand the values.

Detecting fever from images and temperatures

Described herein are embodiments of systems and methods that utilize images of a user's face to detect fever and intoxication. One embodiment of a system to detect fever includes first and second inward-facing head-mounted cameras that are located less than 5 cm from a user's face, are sensitive to wavelengths below 1050 nanometer, and are configured to capture images of respective first and second regions on the user's face. The system also includes a computer that calculates, based on baseline images captured with the cameras while the user did not have a fever, a baseline pattern of hemoglobin concentrations at regions on the face. The computer also calculates, based on a current set of images captured with the cameras, a current pattern of hemoglobin concentrations at the regions, and detects whether the user has a fever based on a deviation of the current pattern from the baseline pattern.

Detecting fever from video images and a baseline

Described herein are embodiments of systems and methods for calculating glucose in a non-invasive manner using head-mounted sensors. In one embodiment, a system that calculates blood glucose levels includes a head-mounted contact photoplethysmography device that measures a signal indicative of a photoplethysmogram signal (PPG signal) at a first region comprising skin on a user's head, and a head-mounted camera configured to capture images of a second region comprising skin on the user's head. The system also includes a computer that identifies, based on the PPG signal, times of systolic notches and times of systolic peaks, and calculates the blood glucose level based on differences between a first subset of the images taken during the times of systolic notches and a second subset of the images taken during the times of systolic peaks. Optionally, the photoplethysmography device and the camera are couple to smartglasses worn on the user's head.

Monitoring blood sugar level with a comfortable head-mounted device

Systems and methods for detecting an occurrence of a transient ischemic attack (TIA). In one embodiment, a device is utilized to measure first and second signals indicative of photoplethysmogram signals at first and second regions on the left and right sides of a user's head (PPGand PPG, respectively). A computer detects the occurrence of a TIA based on PPGand PPGthat exhibit a pattern that involves the following: (i) an asymmetry between PPGand PPG, which is below a threshold, during a first period spanning more than a day; (ii) an asymmetry between PPGand PPG, which exceeds the threshold, during a second period following the first period and spanning between 5 and 180 minutes; and (iii) an asymmetry between PPGand PPG, which falls below the threshold, during a third period following the second period.

Detecting a transient ischemic attack using photoplethysmogram signals

Detecting a respiratory tract infection (RTI) based on changes in coughing sounds, which can provide an early warning of infection with a disease like COVID-19, as well as indications of its progression and severity. In one embodiment, the system includes smartglasses, with sensors mounted thereto, which include an acoustic sensor mounted at a fixed position relative to a user's head, and a movement sensor. A computer receives current measurements of the user, taken with the sensors, while there were head movements that characterize coughing, and also earlier measurements of the user, taken with the sensors, while the user had a known extent of the RTI and while there were head movements that characterize coughing. The computer detects a change relative to the known extent of the RTI based on a difference between the current measurements and the earlier measurements.

Detecting respiratory tract infection based on changes in coughing sounds

Disclosed herein are systems and methods for detecting a physiological response using different types of photoplethysmography sensors. Examples of physiological responses that may be detected include an allergic reaction, a stroke, a migraine, stress, certain emotional responses, manifestation of pain, and blood pressure. In one embodiment, a head-mounted contact photoplethysmography device measures a signal indicative of photoplethysmogram signal at a first region that includes exposed skin on a user's head (PPG signal). A camera, located more than 10 mm away from the user's head, captures images of a second region that includes exposed skin on the user's head. A computer detects the physiological response based on: (i) imaging photoplethysmogram signals (iPPG signals) recognizable in the images, and (ii) correlations between the PPG signal and the iPPG signals.

Utilizing correlations between PPG signals and iPPG signals to improve detection of physiological responses

Systems for calculating extent of congestive heart failure (CHF) and/or identifying exacerbation of CHF. In one embodiment, a system includes smartglasses configured to be worn on a user's head, and an inward-facing camera and a sensor, both physically coupled to the smartglasses. The inward-facing camera is mounted more than 5 mm away from the head and captures images of an area comprising skin on the user's head, which is larger than 4 cm{circumflex over (&#x2003;)}2. The sensor measures a signal indicative of a respiration rate of the user (respiration signal). The system also includes a computer that calculates the extent of CHF based on: a facial blood flow pattern recognizable in the images, and respiration rate recognizable in the respiration signal.

Smartglasses for detecting congestive heart failure

Described herein are embodiments of systems and a method to identify orthostatic hypotension and postural-orthostatic tachycardia syndrome. One system includes a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user's head, and a head-mounted camera configured to capture images indicative of the user's posture. Additionally, the system includes a computer that calculates systolic and diastolic blood pressure values based on the PPG signal, and identifies orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture.

Identification of posture-related syncope using head-mounted sensors

System and Method to detect an abnormal medical event based on an asymmetrical change to blood flow. The system includes right-side and left-side head-mounted devices to measure signals indicative of photoplethysmographic signals (PPG signals) on the right and left sides of a user's head, and a computer that detects the abnormal medical event based on an asymmetrical change to blood flow recognizable in the PPG signals. Optionally, the asymmetrical change to the blood flow corresponds to a deviation of the PPG signals compared to a baseline that is based on previous measurements of PPG signals of the user, taken before the abnormal medical event.

Growing community of inventors

Berkeley, CA, United States of America

Ori Tzvieli