EP0247777A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A sensor head and an oximeter including it
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1987-05-19
•
Granted: —
•
Expires: 2007-05-19
Abstract
Abstract An oximeter designed to measure non-invasively oxygen saturation in blood contained in a part of a living body includes an optical sensor head (10). The optical sensor head (10) has a light-emitting section (7) for emitting measuring light beams having at least two different wavelengths and a light-receiving section (8) for receiving the measuring light beams scattered by and reflected from the measuring part of the living body, and a heating means (2) whose heating temperature is controllable is provided around the light-emitting (7) and light-receiving (8) sections. The arrangement enables measurement of oxygen saturation in any part of a living body in which blood vessels are distributed close to the body surface, such as finger tips, ears and the flat part of a newborn's foot.
Inventors
- 👤 Masahiko C/O Osaka Works Kanda
- 👤 Yuichi C/O Osaka Works Miyagawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 09:16
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; A61B5/14551; A61B5/14552
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
92 words
A sensor head for an oximeter for non-invasively measuring the oxygen saturation of blood contained in part of a living body, the sensor comprising: an optical sensor (6) having a light-emitting section (7) for emitting measuring light beams having at least two different wavelengths and a light-receiving section (8) for receiving measuring light beams scattered by and reflected from the living body being measured; and, heating means (2, 3) provided around the light-emitting (7) and light-receiving (8) sections, the heating means (2, 3) being arranged so that the heating temperature is controllable.
Claim 2
Dependent Claim
92 words
A sensor head for an oximeter for non-invasively measuring the oxygen saturation of blood contained in part of a living body, the sensor comprising: an optical sensor (6) having a light-emitting section (7) for emitting measuring light beams having at least two different wavelengths and a light-receiving section (8) for receiving measuring light beams scattered by and reflected from the living body being measured; and, heating means (2, 3) provided around the light-emitting (7) and light-receiving (8) sections, the heating means (2, 3) being arranged so that the heating temperature is controllable.
Claim 3
Dependent Claim
25 words
An oximeter sensor according to claim 1, wherein the heating means comprises a heating body (2) and a heater (3) for heating the body (2).
Claim 4
Dependent Claim
17 words
An oximeter sensor according to claim 2, wherein the heating body (2) surrounds the optical sensor (6).
Claim 5
Dependent Claim
29 words
An oximeter sensor according to claim 2 or 3, wherein the heating body (2) also includes temperature measuring means (5) for measuring the temperature of the heating body (2).
Claim 6
Dependent Claim
16 words
An oximeter sensor according to claim 4, wherein the temperature measuring means (5) is a thermistor.
Claim 7
Dependent Claim
21 words
An oximeter according to any one of claims 2 to 5, wherein the heater (3) is a nichrome wire heating element.
Claim 8
Dependent Claim
32 words
An oximeter according to any one of the preceding claims, wherein the light-emitting section (7) comprises two light-emitting elements which emit measuring light beams having wavelengths that are different from each other.
Claim 9
Dependent Claim
35 words
An oximeter according to any one of claims 1 to 7, wherein the light-emitting section (7) comprises three or more light-emitting elements which emit measuring light beams having wavelengths that are different from each other.
Claim 10
Dependent Claim
30 words
An oximeter according to any one of claims 2 to 6, wherein the heating body (2) includes double-sided adhesive tape to enable it to be stuck to a living body.
Claim 11
Dependent Claim
53 words
An oximeter comprising a sensor head in accordance with any one of the preceding claims in combination with an oximeter processing unit (11) including a display (12), the oximeter processing unit (11) processing the output of the receiving section (8) to provide an oxygen saturation output which is displayed on the display (12).
References Cited (Backward Citations)
US4259963A
Cited
EP0046601A2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.