JPS6088536A - Blood flow measuring method - Google Patents
Blood flow measuring methodInfo
- Publication number
- JPS6088536A JPS6088536A JP58197922A JP19792283A JPS6088536A JP S6088536 A JPS6088536 A JP S6088536A JP 58197922 A JP58197922 A JP 58197922A JP 19792283 A JP19792283 A JP 19792283A JP S6088536 A JPS6088536 A JP S6088536A
- Authority
- JP
- Japan
- Prior art keywords
- blood flow
- measuring method
- light
- circuit
- flow measuring
- 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
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】 〔技術分野〕 本発明は、血流速を測定する血流測定方法に関する。[Detailed description of the invention] 〔Technical field〕 The present invention relates to a blood flow measurement method for measuring blood flow velocity.
高齢化社会の到来、変通手段の発達あるいは生活様式の
変化に伴う運動不足等により循環器系の疾患が急増して
−る。このような状況のもとて運動によるエネルギー代
謝臘のモニターが必要とされ、簡便なモニタ一手段とし
て脈拍数や血流速の追１１中９１＜〃ローブ１マ５．１
０吉りてルを血流速の測定方法としては、超音波ドツプ
ラ一方式あるいは振動ピックアップ方式が知られてｂる
が、かかる方式を利−用した測定装置は操作がめんどう
で、また、信頼性も低いという欠点があった。Circulatory system diseases are rapidly increasing due to the arrival of an aging society, the development of means of transportation, and a lack of exercise due to changes in lifestyle. Under these circumstances, it is necessary to monitor energy metabolism due to exercise, and one simple means of monitoring is to monitor pulse rate and blood flow velocity.
Ultrasonic Doppler method or vibration pickup method is known as a method for measuring blood flow velocity, but measuring devices using such methods are cumbersome to operate and are not reliable. It also had the disadvantage of being of low quality.
本発明は上記の点に鑑みてなされたもので、その目的と
するところは、取扱いが簡便で、しかも信頼性も高い血
流測定方法を提供するにある。The present invention has been made in view of the above points, and its purpose is to provide a blood flow measuring method that is easy to handle and has high reliability.
以下、本発明を図面を参照して説明する。第１図は、生
体組織の血流に光を当て、その反射光をとらえることに
より拍動状態を測定する原理図で、生体組織１上に、近
赤外領域の光を出す発光素子２と受光素子３を当てて、
発光素子２より発せられた光が血流４によって吸収６反
射された光を受光素子３でとらえるものであり、光の吸
収に４及び反射社は脈動の変化を忠実に示すものである
。Hereinafter, the present invention will be explained with reference to the drawings. Figure 1 is a diagram showing the principle of measuring the pulsation state by shining light on the blood flow in living tissue and capturing the reflected light. Apply the light receiving element 3,
The light emitted from the light emitting element 2 is absorbed and reflected by the blood stream 4, and the light is captured by the light receiving element 3, and the absorption and reflection of the light faithfully shows changes in pulsation.
第２図はかかる方法により検出された脈波を示す図であ
る。FIG. 2 is a diagram showing a pulse wave detected by this method.
次に、第３図は本発明に係る測定方法の原理を説明する
図で、生体組ｉ＜ｇ ｌ上に近赤外領域の光を発する１
対の発光素子２ａ、２ｂと、その両発元累子２ａ、２ｂ
にそれぞれ対応する１対の受光素子３ａ、 ３ｂとを、
両受光素子３ａ、３ｂ間の距離が一定距ＭＩ ｌとなる
ように配（どＬし、前記同様に脈波を測定すると、第４
図にホすように、一方の受光素子３ａでとらえた脈波（
同図（ａ）参照）と他方の受光素子３ｂでとらえたｌｆ
ｌ＋−波（同図（ｂ）参照）との間には時間軸上のずれ
か生じる。この時間軸−りのずれ△１１＋△ｊ２ｓ△ｔ
３は、上記一定距離ｌの長さを血敢４が流れるに要する
時間を表わしている。また、脈波の拍動と拍！ｉｉｌ＋
の間の時間Ｔｉ Ｉ ’１２ ｅ Ｔｓ （単位ＳＪし
Ｃ）は、その時間Ｔｓ＊Ｔｚ＋Ｔａで６０（ＳＥＣ）を
割れば、１分間に於けるその時の脈拍数を示ｔものとな
る。Next, FIG. 3 is a diagram explaining the principle of the measurement method according to the present invention.
A pair of light emitting elements 2a, 2b and both of the light emitting elements 2a, 2b
A pair of light receiving elements 3a and 3b respectively corresponding to
If the distance between both light receiving elements 3a and 3b is a constant distance MIl, and the pulse wave is measured in the same manner as above, the fourth
As shown in the figure, the pulse wave (
(see figure (a)) and lf captured by the other photodetector 3b.
There is a deviation on the time axis between the wave and the l+- wave (see (b) in the same figure). This time axis deviation △11+△j2s△t
3 represents the time required for the blood force 4 to flow the length of the above-mentioned fixed distance l. Also, the pulsation and beat of the pulse wave! iil+
The time between Ti I '12 e Ts (in SJ and C) is calculated by dividing 60 (SEC) by the time Ts*Tz+Ta, which indicates the pulse rate at that time in one minute.
′Ａ５図は上記方法により脈拍数及び血流速を測定する
回Ｕｌｚ構成のブロック図であり、上記発光素子２ａ、
２ｂを含む発光回路ｌＯより発せられた光が、生体組ｌ
裁ｌりの血流により吸収、故射され、上記受光素子３ａ
、３ｂを含む受光、検出回路１１ａ、ｌｌｂにより脈波
となって、第４図に示す如き信号が得られる。この脈波
（ｇ号をフィルり回路Ｌ２ａ、１２ｂ。Figure 'A5 is a block diagram of the circuit configuration for measuring pulse rate and blood flow velocity by the above method, and includes the light emitting elements 2a,
The light emitted from the light emitting circuit lO including 2b
It is absorbed and incidentally emitted by the blood flow in the body, and the light receiving element 3a
, 3b are converted into a pulse wave by the light receiving and detecting circuits 11a and llb, and a signal as shown in FIG. 4 is obtained. This pulse wave (g is filtered into circuits L2a and 12b.
コンパレータ回路１３ａ、１３ｂによりパルス化し、脈
拍数を計測する場合は、拍動間隔計測回路１４で前記拍
動間隔Ｔｓ 、 Ｔａ、 Ｔａを計測し、その値を加算
平均回路すを介して
Ｔ ＝ （ＴＩ ” Ｔａ ＋ Ｔａ ）／３の如き加
算平均を行ない、その値を脈拍数計算回路１６で
Ｐ ＝ ６０ ［ＳＥＣ］／Ｔ （ＳＥＣ］の如き計算
を行な−、１分間の脈拍数を４測し、表示％置１７によ
り脈拍数を表示する。When pulses are generated by the comparator circuits 13a and 13b and the pulse rate is measured, the pulse interval measurement circuit 14 measures the pulse intervals Ts, Ta, and Ta, and the values are added and averaged to T = ( The average value is calculated as P = 60 [SEC]/T (SEC) by the pulse rate calculation circuit 16, and the pulse rate per minute is set to 4. The pulse rate is measured and displayed at the display % position 17.
一方、血流速をめる場合は、パルス化された脈波信号を
△を計ｉＭＩＪ回路１８で前記△ｔ１＋△ｊ２＋Δｔ３
を計測し、その値を加算平均回路１９によりΔ１＝（Δ
ｔ１＋△ｔ２＋Δｔａ）／３の如き加算平均を行なり、
そのＩＩＭと前記受光素子間ｌｌ１ｌａ １Ｊｉｆ：
ｌとを用いて血流速計算回路加でＶ ＝ ｌＡｔ
の如き計算を行ない、その値を表示装置２１により血流
速を表示する。On the other hand, when increasing the blood flow speed, the pulsed pulse wave signal is measured by the iMIJ circuit 18 and the pulsed pulse wave signal is
is measured, and the value is calculated using the averaging circuit 19 to calculate Δ1=(Δ
Perform an arithmetic average such as t1+△t2+Δta)/3,
ll1la 1Jif between the IIM and the light receiving element:
A calculation such as V = lAt is performed using the blood flow velocity calculation circuit using the value 1, and the value is displayed as the blood flow velocity on the display device 21.
第６図は上記発光回路【０からコンパレータ回路１３ま
での具体的回路構成を示す一例で、その個々の構成は周
知の構成であるので説明は省略する。FIG. 6 shows an example of a specific circuit configuration from the light emitting circuit 0 to the comparator circuit 13, and since the individual configurations are well-known configurations, explanations thereof will be omitted.
本発明に係る血流測定方法は、上記のように、生体組織
の血流に光を当て、その反射光をとらえることにより拍
動状態を測定する測定点を血流に沿って２点設け、その
両側定点で得られる拍動状態の差異により血流速を割算
するものであるため、血流速の測定は簡便でしかも正確
である。従って、かかる測定方法を用いれば、例えば運
動中の脈拍数あるいは血流速の測定か可能な携帯用の脈
拍、血流測定方法を提供できる。As described above, the blood flow measurement method according to the present invention includes two measurement points along the blood flow for measuring the pulsation state by shining light on the blood flow in living tissue and capturing the reflected light. Since the blood flow velocity is divided by the difference in the pulsation states obtained at fixed points on both sides, measurement of the blood flow velocity is simple and accurate. Therefore, by using such a measuring method, it is possible to provide a portable pulse rate and blood flow measuring method that can measure the pulse rate or blood flow velocity during exercise, for example.
第１１ス１は本発明に係る拍動状ｊＩすをより定する原
理図、第２図は同上により検出された脈波図、第３図は
本発明に係る血流測定方法の原理図、第４図は１０ＩＬ
の方法により検出された脈波図、第５図は本発明に係る
回路構：戊の一例を示すブロック図、第６図は同上の要
部回路の一例を示す回路図である。
特許出１ｑＤ人
松下電工株式会社
代理人弁理士 竹光敏丸（ほか２名）11th 1 is a principle diagram for determining the pulsation pattern according to the present invention, FIG. 2 is a pulse wave diagram detected by the same method, and FIG. 3 is a principle diagram of the blood flow measuring method according to the present invention. Figure 4 is 10IL
FIG. 5 is a block diagram showing an example of the circuit structure according to the present invention, and FIG. 6 is a circuit diagram showing an example of the main circuit of the same. Patent issued 1qD person Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemitsu (and 2 others)
Claims (1)
ることにより拍動状態を測定する測定点を血流に沿って
２点設け、その両側定点で得られる拍動状態の差異によ
り血流速を計測して成る血流測定方法。(1) Two measurement points are set up along the blood flow to measure the pulsation state by shining light on the blood flow in living tissues and capturing the reflected light, and the difference in the pulsation state obtained at fixed points on both sides is A blood flow measurement method that measures blood flow velocity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58197922A JPS6088536A (en) | 1983-10-21 | 1983-10-21 | Blood flow measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58197922A JPS6088536A (en) | 1983-10-21 | 1983-10-21 | Blood flow measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6088536A true JPS6088536A (en) | 1985-05-18 |
Family
ID=16382504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58197922A Pending JPS6088536A (en) | 1983-10-21 | 1983-10-21 | Blood flow measuring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008301915A (en) * | 2007-06-06 | 2008-12-18 | Sony Corp | Physiological data acquiring apparatus and physiological data acquiring method |
-
1983
- 1983-10-21 JP JP58197922A patent/JPS6088536A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008301915A (en) * | 2007-06-06 | 2008-12-18 | Sony Corp | Physiological data acquiring apparatus and physiological data acquiring method |
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