EP0706776A1
Expired / Lapsed
EP
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Organism information measuring apparatus and pulse-wave measuring apparatus
Assignee: Seiko Epson Corp
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Filing: 1995-09-11
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Granted: —
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Expires: 2015-09-11
Abstract
Abstract An organism information measuring apparatus and an arm wear type pulse-wave measuring apparatus having a sensor unit having a size that does not obstruct the exercise of a user, such as jogging, so that information about an organism, such as the pulse rate, is measured. The arm wear type pulse-wave measuring apparatus has a wrist band (12) for securing the body (10) of the apparatus to the arm of the user; and a sensor unit (30) that is put on the root of a finger by a sensor securing band (40). If the finger is irradiated with light by an LED (31) in the foregoing state, light reaches the blood vessel and light is reflected. Reflected light is received by a phototransistor (32) in such a manner that the quantity of received light corresponds to change in the quantity of blood occurring due to pulse waves of the blood. The LED is an LED capable of emitting blue light and has a light emission wavelength peak of 450 nm. The phototransistor has a light receiving wavelength region in a range from 300 nm to 700 nm.
Inventors
- 👤 Yutaka Kondo
- 👤 Katsuyuki Honda
- 👤 Masayuki Kawata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 17:04
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/22; A61B5/221; A61B5/222; A61B5/02; A61B5/024; A61B5/02416; A61B5/68; A61B5/6801; A61B5/6802; A61B5/681; A61B5/6813; A61B5/6824; A61B5/6825; A61B5/6826
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
An organism information measuring apparatus comprising: a light emitting means (31) for irradiating a portion of an organism with light; and a detection means (32) having a light receiving means for receiving light emitted by said light emitting means through the organism; characterised in that said measurement is performed using light having a wavelength of substantially 700 nm or less.
Claim 2
Dependent Claim
248 words
A pulse-wave measuring apparatus for wearing on a user's arm comprising: a sensor unit (30) having a light emitting means (31) for irradiating the surface of a finger or thumb of the user with light, a light receiving means (32) capable of receiving light emitted by said light emitting means (31) and reflected by the finger or thumb, and a sensor securing means (40) for securing said sensor unit (30) in such a manner that a light receiving surface of said light receiving means (32) and a light emitting surface of said light emitting means (31) face the surface of the finger; a body portion (10) having a display portion (13) for displaying information about pulse waves obtained in accordance with results of receipt of light performed by said light receiving means (32); a wrist band (12) for securing said body portion (10) on the arm of the user; a signal transmission portion (20) which extends from said sensor unit (30) to said body portion (10) and through which a signal representative of the light received by said light receiving means (32) is input to said body (10); wherein said information about pulse waves is displayed in accordance with results of detection in a wavelength region from about 300 nm to about 700 nm performed by said light receiving means (32); and said sensor unit (30) has a size such that said sensor unit may be mounted on the root of a finger or thumb of the user.
Claim 3
Dependent Claim
64 words
An organism information measuring apparatus according to claim 1, or a pulse-wave measuring apparatus according to claim 2, wherein said light emitting means (31) has a light emitting wavelength region at least in a range from substantially 300 nm to substantially 700 nm, and said light receiving means is sensitive to light having a wavelength in the range λ nm, where 0 λ≦ 700.
Claim 4
Dependent Claim
36 words
A pulse-wave measuring apparatus comprising an organism information measuring apparatus according to claim 1 or 3, wherein information about pulse waves is displayed in accordance with the results of detection obtained by said detection means (32).
Claim 5
Dependent Claim
44 words
An organism information or pulse-wave measuring apparatus according to any preceding claim, wherein an LED (Light Emitting Diode) is employed as said light emitting means (31), said LED having a main light emitting wavelength region in a range from 350 nm to 600 nm.
Claim 6
Dependent Claim
27 words
An organism information or pulse-wave measuring apparatus according to claim 5, wherein an InGaN type (Indium-Gallium-Nitrogen type) blue LED is employed as said light emitting means (31).
Claim 7
Dependent Claim
26 words
An organism information or pulse-wave measuring apparatus according to any preceding claim, wherein a GaAsP type (Gallium-Arsenic-phosphorus type) phototransistor is employed as said light receiving means.
Claim 8
Dependent Claim
93 words
An organism information measuring apparatus comprising: a light emitting portion for irradiating a portion of an organism with light; a detection portion having a light receiving portion for receiving light emitted by said light emitting portion through the organism; and an organism information display portion for displaying information about the organism in accordance with results of detection obtained by said detection portion, wherein said information about the organism is displayed in accordance with results of detection in a wavelength region from about 300 nm to about 700 nm obtained by said detection means.
Claim 9
Independent Claim
44 words
A method of measuring the pulse rate of a person, including irradiating a blood vessel with light and detecting the light after it has irradiated the blood vessel, characterised in that only light having a wavelength of substantially 700 nm or less is detected.
Claim 10
Dependent Claim
23 words
A method according to claim 9, wherein irradiation is performed on a blood vessel in the root of the person's finger or thumb.
References Cited (Backward Citations)
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