Optical power modulation vital sign detection method and measurement device
First Claim
1. A vital sign measurement device comprising:
- a sensor frame adapted to be held against an external skin surface of an anatomical location of a subject, within which is an artery;
an optical sensing system held by the sensor frame and comprising an optical waveguide, an optical source device to supply optical energy to a first end of the optical waveguide, and an optical detector to detect an amount of optical energy exiting the second end of optical waveguide, the optical sensing system adapted to sense an arterial pulse from the compression or flexing of at least a portion of the optical waveguide resulting in reduction of the amount of optical energy exiting the second end of the optical waveguide; and
an output unit configured to receive a signal indicative of the amount of light exiting the second end of the optical waveguide and to generate a measure of the vital sign based at least in part on the received signal.
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Abstract
A vital sign measurement device includes a sensor fixation device, a sensor frame, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an anatomical location of a subject. The optical sensing system includes an optical waveguide, an optical source device to supply optical energy to the optical waveguide, and an optical detector to detect an amount of optical energy exiting the optical waveguide. The optical sensing system is adapted to sense an arterial pulse from the compression or flexing of at least a portion of the optical waveguide resulting in reduction of the amount of light exiting the optical waveguide. The output unit is configured to receive a signal indicative of the amount of light exiting the optical waveguide and to generate a measure of the vital sign based at least in part on the received signal.
61 Citations
16 Claims
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1. A vital sign measurement device comprising:
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a sensor frame adapted to be held against an external skin surface of an anatomical location of a subject, within which is an artery; an optical sensing system held by the sensor frame and comprising an optical waveguide, an optical source device to supply optical energy to a first end of the optical waveguide, and an optical detector to detect an amount of optical energy exiting the second end of optical waveguide, the optical sensing system adapted to sense an arterial pulse from the compression or flexing of at least a portion of the optical waveguide resulting in reduction of the amount of optical energy exiting the second end of the optical waveguide; and an output unit configured to receive a signal indicative of the amount of light exiting the second end of the optical waveguide and to generate a measure of the vital sign based at least in part on the received signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification