Portable pulse measuring device
First Claim
1. A portable pulse measuring device, comprising:
- a lighting configuration comprising at least two light-emitting sources for emitting radiant energy through a human body tissue and two light detectors for detecting the intensity of said radiant energy from the two light-emitting sources after propagation through the human body tissue and for providing input signals representative of said propagation, wherein the at least two light-emitting sources comprise a first light-emitting source emitting green or blue light and a second light-emitting source emitting red or infrared light for determining pulse rate; and
processing means configured to determine pulse rate in response to processing the input signals;
wherein elements in the lighting configuration are arranged in the portable pulse measuring device in a configuration where a first light detector and a second light detector and the first light-emitting source are disposed substantially along a first axis, the first light-emitting source being disposed between the first and second light detectors, and the first light-emitting source and the second light-emitting source are disposed along a second axis differing from the first axis and wherein the distances from the first light-emitting source to the two light detectors differ from each other and the distances from the second light-emitting source to the two light detectors differ from each other; and
wherein wavelengths of the at least two light-emitting sources and the distances from the first light-emitting source to the two light detectors and the distances from the second light-emitting source to the two light detectors have been chosen to enable measurement of a variety of measurement depths in the human body tissue, providing sensitivity to blood flow, and insensitivity against to movement artefacts in varying conditions.
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Accused Products
Abstract
A portable pulse measuring device having a lighting configuration having at least three elements selected from a light-emitting source for emitting radiant energy through a human body tissue and a light detector for detecting the intensity of said radiant energy after propagation through the human body tissue and for providing input signals representative of the propagation. The lighting configuration includes at least one light-emitting source and at least one light detector. A processor is provided for determining pulse rate in response to processing the input signals. The elements in the lighting configuration are arranged in the portable pulse measuring device in a configuration where the light-emitting sources in the lighting configuration are asymmetrically disposed in relation to the light detectors in the lighting configuration.
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Citations
16 Claims
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1. A portable pulse measuring device, comprising:
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a lighting configuration comprising at least two light-emitting sources for emitting radiant energy through a human body tissue and two light detectors for detecting the intensity of said radiant energy from the two light-emitting sources after propagation through the human body tissue and for providing input signals representative of said propagation, wherein the at least two light-emitting sources comprise a first light-emitting source emitting green or blue light and a second light-emitting source emitting red or infrared light for determining pulse rate; and processing means configured to determine pulse rate in response to processing the input signals; wherein elements in the lighting configuration are arranged in the portable pulse measuring device in a configuration where a first light detector and a second light detector and the first light-emitting source are disposed substantially along a first axis, the first light-emitting source being disposed between the first and second light detectors, and the first light-emitting source and the second light-emitting source are disposed along a second axis differing from the first axis and wherein the distances from the first light-emitting source to the two light detectors differ from each other and the distances from the second light-emitting source to the two light detectors differ from each other; and wherein wavelengths of the at least two light-emitting sources and the distances from the first light-emitting source to the two light detectors and the distances from the second light-emitting source to the two light detectors have been chosen to enable measurement of a variety of measurement depths in the human body tissue, providing sensitivity to blood flow, and insensitivity against to movement artefacts in varying conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A portable pulse measuring device, comprising:
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a lighting configuration comprising at least two light-emitting sources for emitting radiant energy through a human body tissue and at least one light detector for detecting the intensity of said radiant energy after propagation through the human body tissue and for providing input signals representative of said propagation, wherein the at least two light-emitting sources comprise a first light-emitting source emitting green light and a second light-emitting source emitting infrared light for determining pulse rate; processing means configured to determine pulse rate in response to processing the input signals; wherein the elements in the lighting configuration are arranged in the portable pulse measuring device in a configuration where the distance from the first light-emitting source to a first light detector and the distance from the second light-emitting source to the first light detector differ from each other and wherein the distance between the center of the first light detector and the first light-emitting source is between 2.5 mm and 4.5 mm, and the distance between the center of the first light detector and the second light-emitting source is between 4.0 mm and 7.0 mm; wherein wavelengths of the first and second light-emitting sources and the distance between the center of the first light detector and the first light-emitting source and the distance between the center of the first light detector and the second light-emitting source have been chosen to enable measurement of a variety of measurement depths in the human body tissue and providing sensitivity to blood flow and insensitivity against to movement artefacts in varying conditions. - View Dependent Claims (14, 15, 16)
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Specification