Eyeglasses to detect abnormal medical events including stroke and migraine
First Claim
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1. A system configured to detect an abnormal medical event, comprising:
- at least one right-side head-mounted device configured to measure at least two signals indicative of photoplethysmographic signals (PPGSR1 and PPGSR2, respectively) at first and second regions of interest (ROIR1 and ROIR2, respectively) on the right side of a user'"'"'s head;
wherein ROIR1 and ROIR2 are located at least 2 cm apart;
at least one left-side head-mounted device configured to measure at least two signals indicative of photoplethysmographic signals (PPGSL1 and PPGSL2, respectively) at first and second regions of interest (ROIL1 and ROIL2, respectively) on the left side of the user'"'"'s head;
wherein ROIL1 and ROIL2 are located at least 2 cm apart; and
a computer configured to detect the abnormal medical event based on an asymmetrical change to blood flow recognizable in PPGSR1, PPGSR2, PPGSL1, and PPGSL2.
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Abstract
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.
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Citations
20 Claims
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1. A system configured to detect an abnormal medical event, comprising:
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at least one right-side head-mounted device configured to measure at least two signals indicative of photoplethysmographic signals (PPGSR1 and PPGSR2, respectively) at first and second regions of interest (ROIR1 and ROIR2, respectively) on the right side of a user'"'"'s head;
wherein ROIR1 and ROIR2 are located at least 2 cm apart;at least one left-side head-mounted device configured to measure at least two signals indicative of photoplethysmographic signals (PPGSL1 and PPGSL2, respectively) at first and second regions of interest (ROIL1 and ROIL2, respectively) on the left side of the user'"'"'s head;
wherein ROIL1 and ROIL2 are located at least 2 cm apart; anda computer configured to detect the abnormal medical event based on an asymmetrical change to blood flow recognizable in PPGSR1, PPGSR2, PPGSL1, and PPGSL2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for detecting an abnormal medical event, comprising:
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measuring, utilizing at least one right-side head-mounted device, at least two signals indicative of photoplethysmographic signals (PPGSR1 and PPGSR2, respectively) at first and second regions of interest (ROIR1 and ROIR2, respectively) on the right side of a user'"'"'s head;
wherein ROIR1 and ROIR2 are located at least 2 cm apart;measuring, utilizing at least one left-side head-mounted device, at least two signals indicative of photoplethysmographic signals (PPGSL1 and PPGSL2, respectively) at first and second regions of interest (ROIL1 and ROIL2, respectively) on the left side of the user'"'"'s head;
wherein ROIL1 and ROIL2 are located at least 2 cm apart; anddetecting the abnormal medical event based on an asymmetrical change to blood flow recognizable in PPGSR1, PPGSR2, PPGSL1, and PPGSL2, relative to a baseline based on previous measurements of PPGSR1, PPGSR2, PPGSL1, and PPGSL2 of the user, taken before the abnormal medical event.
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Specification