JPH0388507U - - Google Patents
Info
- Publication number
- JPH0388507U JPH0388507U JP15004289U JP15004289U JPH0388507U JP H0388507 U JPH0388507 U JP H0388507U JP 15004289 U JP15004289 U JP 15004289U JP 15004289 U JP15004289 U JP 15004289U JP H0388507 U JPH0388507 U JP H0388507U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- emitting element
- light emitting
- pulse oximeter
- measurement site
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims 13
- 230000002159 abnormal effect Effects 0.000 claims 4
- 230000020169 heat generation Effects 0.000 claims 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 239000008280 blood Substances 0.000 claims 2
- 210000004369 blood Anatomy 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 230000005856 abnormality Effects 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
第１図は本考案の一実施例によるパルスオキシ
メータの構成を示す図、第２図及び第３図は同実
施例の動作を説明する図、第４図〜第６図は本考
案の別の実施例による回路構成をそれぞれ示す図
並びに第７図は第５図及び第６図による実施例の
動作を説明する図である。
１，２……発光素子、３……受光素子、９，３
９……プローブ、１０，３０……サーミスタ。
FIG. 1 is a diagram showing the configuration of a pulse oximeter according to an embodiment of the present invention, FIGS. 2 and 3 are diagrams explaining the operation of the same embodiment, and FIGS. 4 to 6 are diagrams showing other embodiments of the present invention. FIG. 7 is a diagram illustrating the operation of the embodiment according to FIGS. 5 and 6, respectively. 1, 2... Light emitting element, 3... Light receiving element, 9, 3
9...Probe, 10,30...Thermistor.
Claims (1)
トされる測定部位の透過光量から血中の酸素飽和
度を測定するようになつたパルスオキシメータに
おいて、 測定部位に接触するように発光素子近辺に配置
された温度センサと、 この温度センサが検知した検知温度を低温ヤケ
ドを惹起する可能性に対応した基準温度と比較し
てこの基準温度に達したときに異常温度信号を出
力する上昇温度判断手段と、 前記異常温度信号に応答して異常を報知する報
知手段と、を備えたことを特徴とするパルスオキ
シメータ。 ２ 受光素子への入射光量が、直射時に比べて測
定部位のセツトにより低減したのを検知して、上
昇温度判断手段を始動させる光量低減検知手段を
備えた、ことを特徴とする請求項１に記載のパル
スオキシメータ。 ３ 上昇温度判断手段の動作始動を遅延させるタ
イマ手段を備えた、ことを特徴とする請求項１又
は２に記載のパルスオキシメータ。 ４ 上昇温度判断手段の動作始動を検知温度が平
衡状態に達した時点に遅延させるように、温度セ
ンサの検知した検知温度が測定部位セツト後の温
度平衡状態に向う温度変化曲線を演算して平衡温
度に達した時点を検出する温度平衡検出手段を備
えた、ことを特徴とする請求項１又は２に記載の
パルスオキシメータ。 ５ 測定部位に接触するように発光素子近辺に配
置された温度センサの外に、前記発光素子の発熱
による温度上昇を生じない程度に前記発光素子か
ら離間した位置で前記測定部位に接触するように
配置された別の温度センサを備えると共に、上昇
温度判断手段が、前記双方の温度センサ間の温度
差を検出してこの温度差が基準温度差を越えると
異常温度信号を出力するように構成されている、
ことを特徴とする請求項１に記載のパルスオキシ
メータ。 ６ 互に対向した発光素子及び受光素子間にセツ
トされる測定部位の透過光量から血中の酸素飽和
度を測定するようになつたパルスオキシメータに
おいて、 測定部位に接触するように発光素子近辺に配置
された温度センサと、 この温度センサの検知した検知温度と低温ヤケ
ドを惹起する可能性のない基準温度とを比較して
誤差信号を出力する誤差信号発生手段と、 前記誤差信号に応答して前記発光素子の駆動電
流を増減させる駆動電流制御手段と、を備えたこ
とを特徴とするパルスオキシメータ。 ７ 測定部位に接触するように発光素子近辺に配
置された温度センサの外に、前記発光素子の発熱
による温度上昇を生じない程度に前記発光素子か
ら離間した位置で前記測定部位に接触するように
配置された別の温度センサを設けると共に、誤差
信号発生手段が、前記双方の温度センサ間の温度
差を基準温度差と比較して誤差信号を出力するよ
うに構成されている、ことを特徴とする請求項６
に記載のパルスオキシメータ。 ８ 検知温度が測定部位セツト後の温度平衡状態
に向う温度変化曲線を演算して平衡温度を予測す
る平衡温度予測手段を備えて、上昇温度判断手段
に前記予測された平衡温度を基準温度と比較させ
る、ことを特徴とする請求項１に記載のパルスオ
キシメータ。 ９ 測定部位に接触するように発光素子近辺に配
置された温度センサの外に、前記発光素子の発熱
による温度上昇を生じない程度に前記発光素子か
ら離間した位置で前記測定部位に接触するように
配置された別の温度センサを設けると共に、前記
双方の温度センサが検知した温度差が測定部位セ
ツト後の温度平衡状態に向う温度差変化曲線を演
算して平衡温度差を予測する平衡温度差予測手段
を備えて、上昇温度判断手段を、前記予測された
平衡温度差を低温ヤケドを惹起する可能性に対応
した基準温度差と比較してこの基準温度差に達し
たときに異常温度信号を出力するように構成する
、ことを特徴とする請求項１に記載のパルスオキ
シメータ。[Scope of Claim for Utility Model Registration] 1. In a pulse oximeter that measures the oxygen saturation level in blood from the amount of light transmitted through a measurement site that is set between a light emitting element and a light receiving element that face each other, A temperature sensor is placed near the light emitting element so as to be in contact with it, and the detected temperature detected by this temperature sensor is compared with a reference temperature corresponding to the possibility of causing low-temperature burns.When this reference temperature is reached, an abnormal temperature is detected. A pulse oximeter comprising: temperature rise determining means for outputting a signal; and reporting means for notifying an abnormality in response to the abnormal temperature signal. 2. The light receiving device according to claim 1, further comprising a light amount reduction detection means for detecting that the amount of light incident on the light receiving element is reduced due to the setting of the measurement site compared to when it is directly irradiated, and starting the temperature rise determination means. Pulse oximeter as described. 3. The pulse oximeter according to claim 1 or 2, further comprising timer means for delaying the start of operation of the temperature rise determining means. 4. Calculate a temperature change curve in which the detected temperature detected by the temperature sensor moves toward the temperature equilibrium state after setting the measurement area so as to delay the start of operation of the rising temperature determination means until the detected temperature reaches an equilibrium state. The pulse oximeter according to claim 1 or 2, further comprising temperature equilibrium detection means for detecting the point at which the temperature has been reached. 5 In addition to the temperature sensor placed near the light emitting element so as to contact the measurement site, there is also a temperature sensor placed in the vicinity of the light emitting element so as to contact the measurement site at a position spaced apart from the light emitting element to the extent that a temperature increase due to heat generation of the light emitting element does not occur. The temperature increase determining means is configured to detect a temperature difference between the two temperature sensors and output an abnormal temperature signal when this temperature difference exceeds a reference temperature difference. ing,
The pulse oximeter according to claim 1, characterized in that: 6. In a pulse oximeter that measures oxygen saturation in the blood from the amount of light transmitted through a measurement site set between a light emitting element and a light receiving element facing each other, a pulse oximeter is placed near the light emitting element so as to make contact with the measurement site. a disposed temperature sensor; an error signal generating means for comparing the detected temperature detected by the temperature sensor with a reference temperature that is not likely to cause low-temperature burns and outputting an error signal; and in response to the error signal. A pulse oximeter comprising: drive current control means for increasing/decreasing the drive current of the light emitting element. 7 In addition to the temperature sensor placed near the light emitting element so as to contact the measurement site, there is also a temperature sensor placed in the vicinity of the light emitting element so as to contact the measurement site at a position spaced apart from the light emitting element to the extent that a temperature increase due to heat generation of the light emitting element does not occur. Further, the error signal generating means is configured to compare the temperature difference between the two temperature sensors with a reference temperature difference and output an error signal. Claim 6
Pulse oximeter as described in. 8 Equipped with an equilibrium temperature prediction means for predicting an equilibrium temperature by calculating a temperature change curve in which the detected temperature moves toward a temperature equilibrium state after the measurement part is set, and having the temperature increase judgment means compare the predicted equilibrium temperature with a reference temperature. The pulse oximeter according to claim 1, characterized in that: 9 In addition to the temperature sensor placed near the light emitting element so as to come into contact with the measurement site, there is also a temperature sensor placed in the vicinity of the light emitting element so as to contact the measurement site at a position spaced apart from the light emitting element to the extent that a temperature increase due to heat generation of the light emitting element does not occur. Equilibrium temperature difference prediction, in which an equilibrium temperature difference is predicted by providing another temperature sensor arranged at the same time and calculating a temperature difference change curve in which the temperature difference detected by both temperature sensors moves toward a temperature equilibrium state after the measurement site is set. the temperature increase determining means compares the predicted equilibrium temperature difference with a reference temperature difference corresponding to the possibility of causing low-temperature burns, and outputs an abnormal temperature signal when the reference temperature difference is reached. The pulse oximeter according to claim 1, wherein the pulse oximeter is configured to:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15004289U JPH058974Y2 (en) | 1989-12-28 | 1989-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15004289U JPH058974Y2 (en) | 1989-12-28 | 1989-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0388507U true JPH0388507U (en) | 1991-09-10 |
| JPH058974Y2 JPH058974Y2 (en) | 1993-03-05 |
Family
ID=31696411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15004289U Expired - Lifetime JPH058974Y2 (en) | 1989-12-28 | 1989-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH058974Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018147045A1 (en) * | 2017-02-07 | 2018-08-16 | アルプス電気株式会社 | Sensor module, and control method therefor |
| JPWO2022091403A1 (en) * | 2020-11-02 | 2022-05-05 |
-
1989
- 1989-12-28 JP JP15004289U patent/JPH058974Y2/ja not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018147045A1 (en) * | 2017-02-07 | 2018-08-16 | アルプス電気株式会社 | Sensor module, and control method therefor |
| JPWO2022091403A1 (en) * | 2020-11-02 | 2022-05-05 | ||
| WO2022091403A1 (en) * | 2020-11-02 | 2022-05-05 | 日本たばこ産業株式会社 | Measurement device for living tissue, suction device, measurement method for living tissue, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH058974Y2 (en) | 1993-03-05 |
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