JPS5827542A - Blood stream sensor - Google Patents
Blood stream sensorInfo
- Publication number
- JPS5827542A JPS5827542A JP12504681A JP12504681A JPS5827542A JP S5827542 A JPS5827542 A JP S5827542A JP 12504681 A JP12504681 A JP 12504681A JP 12504681 A JP12504681 A JP 12504681A JP S5827542 A JPS5827542 A JP S5827542A
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting element
- holding member
- blood flow
- receiving element
- 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.)
- Pending
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、血流の変化を光学的に検出して心拍数を計数
する心拍計の血流センサーに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blood flow sensor for a heart rate monitor that optically detects changes in blood flow and counts heart rate.
発行素子から被測定部位へ照射された光線の、血流の脈
動に対応した散乱光線の変化を検出する光学的な血流セ
ンサーにおいて、被検出部位に指先を用いるものでは、
従来、第１図に示す如く、指１の長さ方向へ一列に発行
素子２と受光素子３を配置したものか知られているが、
発光素子２と受光素子３の光軸が平行である為に、照射
光線を有効に利用することができず、その為発光素子２
と受光素子３の間隔を近づけると皮膚表面の透堝光を主
に検出して、組織内における血液による反射または吸収
される散乱光線の検出か出来ないという欠点があった。In an optical blood flow sensor that detects changes in scattered light rays emitted from an emitting element to a measurement site in response to the pulsation of blood flow, those that use a fingertip as the detection site,
Conventionally, as shown in FIG. 1, it is known that a light emitting element 2 and a light receiving element 3 are arranged in a line in the length direction of a finger 1.
Since the optical axes of the light-emitting element 2 and the light-receiving element 3 are parallel, the irradiated light cannot be used effectively, and therefore the light-emitting element 2
When the spacing between the light receiving element 3 and the light receiving element 3 is made closer, the sensor mainly detects the transmitted light on the skin surface, and only the scattered light reflected or absorbed by blood within the tissue can be detected.
この様な欠点を解消して、被検出部位の深部の血流変化
を検出すべく、第２図に示す如く、発光素子２と受光素
子３を光軸が一致する様に対向配置させたもの、あるい
は、２Ｐ′３図に示す如く発光素子２と受光素子３の光
軸が交骨によって照射光線が阻だけられ、また指１の太
さに合せて発光素子２．受光素子３の位置を調整し彦け
ればならないという欠点かあり、後者では発光素子２０
発光部及び受光素子３の受光部と指１の皮膚との接触部
分が斜めに接触して空隙が生する為、それぞれの発光部
及び受光部において光の損失を生じ、また皮膚表面光か
直接受光素子に流入するという欠点がある。これを防ぐ
為に皮膚に強く押当てると血流か阻げられて心拍を検出
できないという欠点もある。また、上述した従来例では
、どれも指１の長さ方向に直角な方向への移動が生じ易
く、あるいは、回転し易すい構造であって、この様な血
流センサーにおいて指１を安定させて保持する為には、
指１の形状、太さに応じた保持手段を設けなければなら
ないという欠点があった。In order to overcome these drawbacks and detect changes in blood flow deep within the detection site, a light emitting element 2 and a light receiving element 3 are disposed facing each other so that their optical axes coincide, as shown in Fig. 2. Alternatively, as shown in Figure 2P'3, the optical axes of the light emitting element 2 and the light receiving element 3 are intersected by the intersecting bones, and the light emitting element 2. There is a drawback that the position of the light-receiving element 3 must be adjusted, and in the latter case, the position of the light-emitting element 20 must be adjusted.
Since the light-emitting part and the light-receiving part of the light-receiving element 3 contact the skin of the finger 1 obliquely and a gap is created, light is lost in each light-emitting part and light-receiving part, and the skin surface light is directly received. It has the disadvantage that it flows into the device. In order to prevent this, if the device is pressed too hard against the skin, blood flow is blocked and heartbeats cannot be detected, which is a drawback. Furthermore, in all of the conventional examples described above, the finger 1 is easily moved in a direction perpendicular to the length direction or easily rotated, and it is difficult to stabilize the finger 1 in such a blood flow sensor. In order to hold
There is a drawback that a holding means must be provided depending on the shape and thickness of the finger 1.
本発明は、上述の欠点に鑑み、心拍の被検出部位か定置
される保持部材をＶ字形または半円形等の凹型構造に形
成し、該保持部材の傾斜が異なる２つの面にそれぞれ発
光素子又は受光素子を取付け、これらの発光素子および
受光素子の指向性および組織内散乱をふくむ光軸が互い
に交わる様に配設したもので、被検出部位を安定的に保
持し、且つ被検出部位の深部における血流の変化を効率
良く検出することのできる血流センサーを提供せんとす
るものである。In view of the above-mentioned drawbacks, the present invention forms a holding member in which a heartbeat detection area is placed in a concave structure such as a V-shape or a semicircle, and a light-emitting element or A light-receiving element is attached, and the light-emitting element and light-receiving element are arranged so that their optical axes, including their directivity and intra-tissue scattering, intersect with each other. The present invention aims to provide a blood flow sensor that can efficiently detect changes in blood flow in the blood flow.
以下、本発明を用いた実施例を第４図〜第７図を参照し
て詳細に説明する。１は心拍の被検出部位として本実施
例で選択された人体の指、２は被検出部位へ光線を照射
する発光素子、３は血液により反射され、あるいけ吸収
された散乱光を検出する受光素子である。４は前記指１
を定置する保持部材で、Ｖ字形に保持面４ａ、４ｂが形
成され、これらの保持面４ａ、４ｂＫはそれぞれ前記発
光素子２．受光素子３が互の光軸が交わる様に取付けら
れている。５は前記発光素子２、及び受光素子３に給電
し、あるいは、検出信号を伝達するリード線、６は前記
指１を保持部材４へ押圧する弾性体、７は前記それぞれ
の部材を被う遮光性のケースである。Hereinafter, embodiments using the present invention will be described in detail with reference to FIGS. 4 to 7. Reference numeral 1 denotes a finger of a human body selected in this embodiment as a heartbeat detection site, 2 a light emitting element that irradiates a light beam to the detection site, and 3 a light receiver that detects scattered light reflected by blood and absorbed. It is element. 4 is the finger 1
This is a holding member for fixing the light emitting element 2.V-shaped holding surfaces 4a and 4b are formed, and these holding surfaces 4a and 4bK are used to hold the light emitting element 2. The light receiving elements 3 are mounted so that their optical axes intersect. 5 is a lead wire that supplies power to the light emitting element 2 and the light receiving element 3 or transmits a detection signal; 6 is an elastic body that presses the finger 1 against the holding member 4; and 7 is a light shielding member that covers each of the members. This is a case of gender.
心拍の被検出部位であるところの指１は、保持部材４に
沿わせて挿入し、該指１は弾性体６によって前記保持部
材４に押圧され、該指１は前記保持部材４の保持面４ａ
、４ｂがＶ字形に形成されている為、指１の太さに影響
されることなく安定的に保持される。同時に、発光素子
２．及び受光素子３の発光部及び受光部は指１にほぼ直
角に圧接させることができるから、光学的な損失を少な
くすることかできる。The finger 1, which is the part where the heartbeat is to be detected, is inserted along the holding member 4, and the finger 1 is pressed against the holding member 4 by the elastic body 6, and the finger 1 is pressed against the holding surface of the holding member 4. 4a
, 4b are formed in a V-shape, so that they can be stably held without being affected by the thickness of the finger 1. At the same time, light emitting element 2. Since the light emitting part and the light receiving part of the light receiving element 3 can be brought into pressure contact with the finger 1 at a substantially right angle, optical loss can be reduced.
尚、上述した実施例では手の指を用いて心拍数を検出し
であるが、被検出部位としては手指に限ることなく、他
の身体の一部を用いても、本発明による効果は同様に得
ることができる。また、第７図に示す如く、保持部材４
の保持面の垂線が交わる点Ｐと、発光素子２と受光素子
３の光軸が交わる点Ｑとを一致させなくとも、さらに、
上述した保持部材４の保持面４ａ、４ｂを半円形の凹型
に形成した場合でも本発明の効果を得ることができる。In the above-mentioned embodiment, the heart rate is detected using the fingers of the hand, but the detection site is not limited to the fingers, and the same effects of the present invention can be obtained even if other parts of the body are used. can be obtained. Further, as shown in FIG. 7, the holding member 4
Even if the point P where the perpendicular lines of the holding surfaces intersect and the point Q where the optical axes of the light emitting element 2 and the light receiving element 3 intersect are not aligned,
Even when the holding surfaces 4a and 4b of the holding member 4 described above are formed in a semicircular concave shape, the effects of the present invention can be obtained.
以上述べた如く、本発明は、被検出部位を定置させる保
持部材の保持面をＶ字形または半円形等の凹型構造に形
成し、これらの保持面に発光素子および受光素子の指向
性および組織内散乱をふくむ光軸が互いに交わる様に発
光素子と受光素子とを配置したものであるから、前記被
検出部位が安定的に保持され、且つ、光学的な損失が少
なくなるという利点がある。As described above, in the present invention, the holding surface of the holding member for fixing the detection site is formed into a concave structure such as a V shape or a semicircle, and the directivity of the light emitting element and the light receiving element and the inside of the tissue are formed on these holding surfaces. Since the light-emitting element and the light-receiving element are arranged so that the optical axes including scattering intersect with each other, there is an advantage that the detection target region is stably held and optical loss is reduced.
第１図〜第３図は、血流センサーの従来例を示す説明図
である。第４図は本発明を用いた血流セシサーの一実施
例の外観を示す斜視図、第５図は、第４図Ｉ−Ｔ線で切
断して示す従断面図、第６図は、第４図■−■線で切断
して示す横断面図である。第７図は、本発明を用いた血
流センサーにおける他の実施例を示す要部説明図である
。
１・・・・・・指、２・・・・・・発光素子、３・旧・
・受光素子、４・・・・・・保持部材、４ａ、４１）・
・・・・・保持面、５・・・・・・リード線、６・・・
・・・弾性体、７・・・・・・ケース。
特許出願人
株式会社 コパル・タケダエンジニアリング第１図FIGS. 1 to 3 are explanatory diagrams showing conventional examples of blood flow sensors. FIG. 4 is a perspective view showing the external appearance of one embodiment of a blood flow processor using the present invention, FIG. 5 is a cross-sectional view taken along line IT in FIG. 4, and FIG. FIG. 4 is a cross-sectional view taken along the line ■-■ in FIG. 4; FIG. 7 is an explanatory diagram of main parts showing another embodiment of a blood flow sensor using the present invention. 1...Finger, 2...Light emitting element, 3. Old...
・Light receiving element, 4...Holding member, 4a, 41)・
...Holding surface, 5...Lead wire, 6...
...Elastic body, 7...Case. Patent applicant Copal Takeda Engineering Co., Ltd. Figure 1
Claims (1)
乱光線の変化を検出して心拍数を計数する心拍計におい
て、被測定部位を定置するＶ字形または半円形等の凹型
の保持部材を形成し、該保持部材の互いに傾斜か異なる
両方の面に発光素子と受光素子を、それぞれの指向性お
よび組織内散乱をふくむ光軸が互いに交わる様につ付け
たことを特徴とする血流センサー。In a heart rate meter that measures heart rate by irradiating a light beam onto a measurement target area and detecting changes in scattered light within tissue, a concave holding member such as a V-shape or a semicircle is used to hold the measurement target area in place. A blood flow sensor characterized in that a light emitting element and a light receiving element are attached to both surfaces of the holding member with different inclinations such that their optical axes including directivity and intra-tissue scattering intersect with each other. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504681A JPS5827542A (en) | 1981-08-10 | 1981-08-10 | Blood stream sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504681A JPS5827542A (en) | 1981-08-10 | 1981-08-10 | Blood stream sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5827542A true JPS5827542A (en) | 1983-02-18 |
Family
ID=14900490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12504681A Pending JPS5827542A (en) | 1981-08-10 | 1981-08-10 | Blood stream sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827542A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61267857A (en) * | 1985-05-23 | 1986-11-27 | Casio Comput Co Ltd | Graph display device |
| JPS61269764A (en) * | 1985-05-24 | 1986-11-29 | Casio Comput Co Ltd | Small-sized electronic computer equipped with graph displaying function |
| JPS61275963A (en) * | 1985-05-31 | 1986-12-06 | Casio Comput Co Ltd | Electronic calculator with graphic display function |
| JPS6287126A (en) * | 1985-10-15 | 1987-04-21 | 松下電器産業株式会社 | Probe for digital electroencephalograph |
| JP2009201894A (en) * | 2008-02-29 | 2009-09-10 | Seiko Instruments Inc | Pulse wave detecting device |
| WO2024101108A1 (en) * | 2022-11-09 | 2024-05-16 | オムロン株式会社 | Measuring device and measuring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55116336A (en) * | 1979-02-28 | 1980-09-06 | Matsushita Electric Works Ltd | Sensor for detecting pulsation |
-
1981
- 1981-08-10 JP JP12504681A patent/JPS5827542A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55116336A (en) * | 1979-02-28 | 1980-09-06 | Matsushita Electric Works Ltd | Sensor for detecting pulsation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61267857A (en) * | 1985-05-23 | 1986-11-27 | Casio Comput Co Ltd | Graph display device |
| JPH0685163B2 (en) * | 1985-05-23 | 1994-10-26 | カシオ計算機株式会社 | Graph display device |
| JPS61269764A (en) * | 1985-05-24 | 1986-11-29 | Casio Comput Co Ltd | Small-sized electronic computer equipped with graph displaying function |
| JPS61275963A (en) * | 1985-05-31 | 1986-12-06 | Casio Comput Co Ltd | Electronic calculator with graphic display function |
| JPS6287126A (en) * | 1985-10-15 | 1987-04-21 | 松下電器産業株式会社 | Probe for digital electroencephalograph |
| JP2009201894A (en) * | 2008-02-29 | 2009-09-10 | Seiko Instruments Inc | Pulse wave detecting device |
| WO2024101108A1 (en) * | 2022-11-09 | 2024-05-16 | オムロン株式会社 | Measuring device and measuring method |
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