Photoplethysmographic measurement method and apparatus
First Claim
Patent Images
1. A mobile photoplethysmographic measurement wearable apparatus, comprising:
- a probe;
a light emitter comprising a phosphorescent light source and disposed at one end of the probe, the light emitter configured to illuminate a measurement part in response to an environmental light-based stimulus external to the photoplethysmographic measurement wearable apparatus;
a pulsing apparatus configured to pulse light emitted by the light emitter using a liquid crystal matrix;
a light receiver disposed at another end of the probe and configured to measure light reflected or transmitted by the illuminated measurement part, and pulsed by the pulsing apparatus, in response to detection of the illumination of the measurement part;
an oxygen saturation calculator configured to calculate an intravascular oxygen saturation level based on the result from the light receiver; and
an adhesive layer in contact with the light emitter, the light receiver, and the probe,wherein the phosphorescent light source comprises at least one selected from the group consisting of alkaline aluminate, silicate aluminate, strontium aluminate, europium aluminate, dysprosium aluminate, and calcium aluminate, andwherein a wavelength of the light emitted from the light emitter ranges from 660 to 1,000 nm.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided are a photoplethysmographic measurement apparatus, a photoplethysmographic measurement method, and an apparatus for measuring a biosignal. The photoplethysmographic measurement apparatus includes a probe, a light emitter comprising a nonelectrical light source and disposed at one end of the probe, the light emitter configured to illuminate a measurement part, and a light receiver disposed at another end of the probe and configured to detect light reflected or transmitted by the illuminated measurement part.
18 Citations
18 Claims
-
1. A mobile photoplethysmographic measurement wearable apparatus, comprising:
-
a probe; a light emitter comprising a phosphorescent light source and disposed at one end of the probe, the light emitter configured to illuminate a measurement part in response to an environmental light-based stimulus external to the photoplethysmographic measurement wearable apparatus; a pulsing apparatus configured to pulse light emitted by the light emitter using a liquid crystal matrix; a light receiver disposed at another end of the probe and configured to measure light reflected or transmitted by the illuminated measurement part, and pulsed by the pulsing apparatus, in response to detection of the illumination of the measurement part; an oxygen saturation calculator configured to calculate an intravascular oxygen saturation level based on the result from the light receiver; and an adhesive layer in contact with the light emitter, the light receiver, and the probe, wherein the phosphorescent light source comprises at least one selected from the group consisting of alkaline aluminate, silicate aluminate, strontium aluminate, europium aluminate, dysprosium aluminate, and calcium aluminate, and wherein a wavelength of the light emitted from the light emitter ranges from 660 to 1,000 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A mobile photoplethysmographic measurement wearable apparatus, comprising:
-
a probe; a light emitter comprising a chemiluminescent light source disposed at one end of the probe, the light emitter configured to illuminate a measurement part in response to an environmental heat-based stimulus external to the photoplethysmographic measurement wearable apparatus; a light receiver disposed at another end of the probe and configured to measure light reflected or transmitted by the illuminated measurement part in response to detection of the illumination of the measurement part, and an adhesive layer in contact with the light emitter and the light receiver, wherein the chemiluminescent light source comprises at least one selected from the group consisting of a luminol derivative, adamantane-dioxetane, an acridinium derivative, lucigenin, firefly luciferin, photoprotein, hydrazides, a Schiff base compound, an electrochemical luminescent substrate, and a luminescent oxygen channeling substrate, wherein a wavelength of the light emitted from the light emitter ranges from 660 to 1,000 nm, and the measuring by the light receiver includes measuring an intravascular oxygen saturation level, and wherein the chemiluminescent light source induces a reverse reaction to return to an initial separation state. - View Dependent Claims (12)
-
-
13. A mobile photoplethysmographic measurement wearable apparatus, comprising:
-
a probe; a light emitter comprising a radioactive light source configured to always provide illumination during the radioactive light source'"'"'s luminous lifetime, and disposed at one end of the probe, the light emitter configured to continuously illuminate a measurement part; a pulsing apparatus configured to pulse light emitted by the light emitter using a liquid crystal matrix; a light receiver disposed at another end of the probe and configured to selectively measure detected light reflected or transmitted by the illuminated measurement part, and pulsed by the pulsing apparatus; an oxygen saturation processor configured to calculate an oxygen saturation level based on a result of the measuring by the light receiver; a transmitter configured to wirelessly transmit the calculated oxygen saturation level to a display device; and an adhesive layer in contact with the light emitter and the light receiver. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification