System and method for determining vital sign information of a subject
First Claim
1. A system for determining breathing information of a subject comprisinga marker configured for application to the subject, the marker including a patch with flexible filaments protruding from a surface, the filaments being configured to flex in response to air flow during inhalation and exhalation, the filaments having at least one of a color and brightness gradient along the filaments from top to bottom such that at least one of the color and brightness of the patch changes as the filaments flex,a camera configured to detect the changes in at least one of the color and brightness of the patch in response to the air flow, anda computer configured to identify the marker in a video image from the camera and determine the breathing information of the subject from the detected changes in at least one of the color and brightness of the patch.
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Accused Products
Abstract
Vital sign information of a subject is determined using a marker for application to the subject. The marker is configured to change an optical property due to a mechanical manipulation of the marker caused by a physiological process of the subject. The change in the optical property is detected and analyzed to determine vital sign information of the subject.
17 Citations
19 Claims
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1. A system for determining breathing information of a subject comprising
a marker configured for application to the subject, the marker including a patch with flexible filaments protruding from a surface, the filaments being configured to flex in response to air flow during inhalation and exhalation, the filaments having at least one of a color and brightness gradient along the filaments from top to bottom such that at least one of the color and brightness of the patch changes as the filaments flex, a camera configured to detect the changes in at least one of the color and brightness of the patch in response to the air flow, and a computer configured to identify the marker in a video image from the camera and determine the breathing information of the subject from the detected changes in at least one of the color and brightness of the patch.
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9. A method for determining vital sign information of a subject comprising the steps of:
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applying a patch with protruding flexible filaments adjacent a nasal or oral region of the subject, the flexible filaments being configured to flex and have a first color property due to a mechanical manipulation during inhalation and a second color property during exhalation to a subject, the second color property being different from the first color property; detecting light reflected from the flexible filaments with a camera; and determining respiration information of the subject from the detected light. - View Dependent Claims (10, 11)
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12. A marker for use in a system for determining respiratory information, the marker including:
a patch configured to be applied to the subject adjacent nostrils of a subject and including filaments protruding from the surface, the filaments being configured to flex differently in response to air flow during inhalation and exhalation, wherein the filaments having a first color on a first surface and a second color on a second surface, the first color being different from the second color, the filaments being configured such that when flexing in response to inhalation, the patch shows the first color and when flexing in response to exhalation, the patch shows the second color. - View Dependent Claims (13, 14, 15, 16)
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17. A marker for use in a system for determining respiratory information, comprising:
a lipstick configured to be applied to the lips of a subject, the lipstick being configured to have a first color property when the subject inhales and a second color property when the subject exhales, the second color property being different from the first color property.
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18. A method of determining respiratory information of a patient, the method comprising:
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applying a colorimetric lipstick to lips of the patient, the colorimetric lipstick being configured to have different optical properties during inhalation than during exhalation; with a camera, detecting light reflected from the colorimetric lipstick and generating an output signal indicative of changing of the optical properties as the patient breathes; and converting the output signal into the respiratory information. - View Dependent Claims (19)
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Specification