JPH04259448A - Electronic sphygmomanometer for finger - Google Patents
Electronic sphygmomanometer for fingerInfo
- Publication number
- JPH04259448A JPH04259448A JP3022259A JP2225991A JPH04259448A JP H04259448 A JPH04259448 A JP H04259448A JP 3022259 A JP3022259 A JP 3022259A JP 2225991 A JP2225991 A JP 2225991A JP H04259448 A JPH04259448 A JP H04259448A
- Authority
- JP
- Japan
- Prior art keywords
- blood pressure
- measurement
- pulse wave
- cuff
- determination means
- 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
- 230000036772 blood pressure Effects 0.000 claims abstract description 107
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 description 9
- 230000035487 diastolic blood pressure Effects 0.000 description 5
- 230000035488 systolic blood pressure Effects 0.000 description 5
- 238000013186 photoplethysmography Methods 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 101001139126 Homo sapiens Krueppel-like factor 6 Proteins 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、カフに脈波を検出す
るための発光素子と受光素子とを備えた指用電子血圧計
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic finger blood pressure monitor having a cuff equipped with a light emitting element and a light receiving element for detecting pulse waves.
【０００２】0002
【従来の技術】従来の指用電子血圧計は、血圧決定方式
から所謂、光電脈波容積振動法方式の血圧計と、所謂オ
シロメトリック方式の血圧計とに大別できる。光電脈波
容積振動法の血圧計は、カフに脈波を検出するための発
光素子と受光素子を備えたもので、発光素子から光を動
脈に照射し、血流により反射された光を受光素子で受光
して血圧を測定するものである。ＬＥＤ等の発光素子に
より動脈に照射された光は、動脈内の血流量により反射
量が変化する。この変化をフォトトランジスタ等の受光
素子により脈波として検出する。そして、検出された脈
波（脈波振幅）に、アルゴリズムを適用して最高血圧値
と最低血圧値を計算する。2. Description of the Related Art Conventional finger electronic blood pressure monitors can be broadly classified into so-called photoplethysmography-based blood pressure monitors and so-called oscillometric-type blood pressure monitors based on the blood pressure determination method. A photoplethysmographic volumetric oscillator blood pressure monitor has a cuff equipped with a light-emitting element and a light-receiving element for detecting pulse waves.The light-emitting element emits light into the arteries and receives the light reflected by the blood flow. The device measures blood pressure by receiving light. The amount of light irradiated onto an artery by a light emitting element such as an LED changes depending on the amount of blood flow within the artery. This change is detected as a pulse wave by a light receiving element such as a phototransistor. Then, an algorithm is applied to the detected pulse wave (pulse wave amplitude) to calculate the systolic blood pressure value and the diastolic blood pressure value.
【０００３】また、オシロメトリック方式の血圧計は、
カフに連続する空気系に配備された圧力センサによって
、動脈壁の振動により振動するカフ内の空気圧の変動を
脈波として検出する方式である。カフにより圧迫された
動脈壁は、脈動に応じて振動する。この振動振幅は、圧
迫量に応じて変化する。そして、この振動はカフを通じ
てカフ内の空気圧を振動させる。このカフ内の空気圧の
振動を脈波として検出する。検出された脈波（脈波振幅
）に、アルゴリズムを適用して最高血圧値と最低血圧値
を計算する。[0003] Also, an oscillometric blood pressure monitor is
This method uses a pressure sensor installed in the air system connected to the cuff to detect fluctuations in air pressure within the cuff, which vibrate due to vibrations in the arterial wall, as pulse waves. The arterial wall compressed by the cuff vibrates in response to the pulsations. This vibration amplitude changes depending on the amount of compression. This vibration then causes the air pressure within the cuff to vibrate through the cuff. This vibration of air pressure within the cuff is detected as a pulse wave. An algorithm is applied to the detected pulse wave (pulse wave amplitude) to calculate the systolic blood pressure value and diastolic blood pressure value.
【０００４】0004
【発明が解決しようとする課題】従来の光電脈波容積振
動方式の電子血圧計では、動脈によって反射した光の反
射量に基づいて脈波を検出する（光電脈波）方式である
ため、外乱光等により測定結果が影響を受け易い。また
、被測定者の指（皮膚）の色により反射量に限界がある
許かりでなく、光電センサ（発・受光素子）の装着位置
ずれが発生した場合等に正確な血圧測定をなし得ない不
利がある。一方、オシロメトリック方式の電子血圧計で
は、カフ内空気圧の振動を脈波として検出する（圧脈波
）方式であるため、上記光電脈波容積振動方式のような
欠点はない反面、体動等によりカフ内空気圧にノイズが
発生する虞れがあり、正確な測定結果が得られない不利
がある許かりでなく、被測定者によっては微小脈波の検
出が困難な場合がある等の不利があった。[Problems to be Solved by the Invention] Conventional electronic blood pressure monitors using the photoplethysmographic volumetric vibration method detect pulse waves based on the amount of light reflected by arteries (photoplethysmography), so they are susceptible to external disturbances. Measurement results are easily affected by light, etc. In addition, there is a limit to the amount of reflection depending on the color of the finger (skin) of the person to be measured, and accurate blood pressure measurement may not be possible if the photoelectric sensor (emitting/receiving element) is misaligned. There is a disadvantage. On the other hand, oscillometric electronic blood pressure monitors detect vibrations in the air pressure inside the cuff as pulse waves (pressure pulse waves), so while they do not have the drawbacks of the photoplethysmographic volume vibration method, they do not have the disadvantages of detecting body movements. This may cause noise in the air pressure inside the cuff, which not only has the disadvantage of not being able to obtain accurate measurement results, but also has the disadvantage that it may be difficult to detect micropulse waves depending on the subject. there were.
【０００５】この発明は、以上のような課題を解消させ
、光電脈波容積振動方式とオシロメトリック方式の両方
式を血圧決定手段として併用し、主の血圧決定方式によ
る血圧測定が失敗に終わった場合に、従の血圧決定方式
による血圧測定結果を採用することで、血圧測定の確実
度を大幅に向上させた電子血圧計を提供することを目的
とする。[0005] This invention solves the above-mentioned problems and uses both the photoplethysmographic volume vibration method and the oscillometric method as blood pressure determination means, and the blood pressure measurement using the main blood pressure determination method ended in failure. An object of the present invention is to provide an electronic blood pressure monitor that greatly improves the reliability of blood pressure measurement by adopting blood pressure measurement results using a conventional blood pressure determination method.
【０００６】[0006]
【課題を解決するための手段及び作用】この目的を達成
させるために、この発明の電子血圧計では、次のような
構成としている。電子血圧計は、カフと、このカフの適
所に配備された脈波検出用発・受光素子と、カフの空気
系に配備されたカフ圧検出用圧力センサと、異なる方式
の２つの血圧決定手段と、第１の血圧決定手段により血
圧測定が成功したか否かを判断し、第１の血圧決定手段
による血圧測定が成功と判断された場合に、この血圧測
定値を採用し、逆に第１の血圧決定手段が測定失敗と判
断された場合に、第２の血圧決定手段により決定された
血圧値を採用する光電脈波並びに圧脈波の測定結果採用
手段とから成ることを特徴としている。Means and Effects for Solving the Problems In order to achieve this object, the electronic blood pressure monitor of the present invention has the following configuration. An electronic blood pressure monitor consists of two blood pressure determining means using different methods: a cuff, a pulse wave detection emitting/light receiving element placed in an appropriate position on the cuff, and a pressure sensor for cuff pressure detection placed in the air system of the cuff. Then, it is determined whether the blood pressure measurement was successful by the first blood pressure determination means, and if it is determined that the blood pressure measurement by the first blood pressure determination means was successful, this blood pressure measurement value is adopted, and conversely, the blood pressure measurement by the first blood pressure determination means is determined to be successful. The method is characterized by comprising a photoplethysmogram and pressure pulse wave measurement result adopting means that adopts the blood pressure value determined by the second blood pressure determining means when the first blood pressure determining means is determined to have failed in measurement. .
【０００７】このような構成を有する電子血圧計では、
光電脈波容積振動方式による血圧決定手段と、オシロメ
トリック方式による血圧決定手段とを併用配備している
。例えば、光電脈波方式の血圧決定手段を第１の血圧決
定手段とし、圧脈波の血圧決定手段を第２の血圧決定手
段とすると、血圧測定に際し、第１の血圧決定手段によ
って光電脈波が検出され、光電脈波情報にアルゴリズム
を適用して血圧値を決定する。この第１の血圧決定手段
と同時に第２の血圧決定手段によって圧脈波が検出され
る。仮に、外乱光等により正確な光電脈波がとれず、第
１の血圧決定手段によって正確な血圧測定がなし得なか
ったとすると、第２の血圧決定手段によって得られた圧
脈波情報にアルゴリズムを適用して血圧値を決定し、こ
の測定結果を採用する。この結果、第２の血圧決定手段
では第１の血圧決定手段の不利、つまり外乱光、皮膚の
色、センサ装着位置ずれ等による測定結果の影響はなく
、正確な測定結果を得ることができる。[0007] In an electronic blood pressure monitor having such a configuration,
A blood pressure determining means using a photoplethysmographic volume vibration method and a blood pressure determining means using an oscillometric method are used in combination. For example, if a photoplethysmographic blood pressure determining means is used as the first blood pressure determining means, and a pressure pulse wave blood pressure determining means is used as the second blood pressure determining means, when blood pressure is measured, the first blood pressure determining means is detected, and an algorithm is applied to the photoplethysmogram information to determine the blood pressure value. At the same time as this first blood pressure determining means, a pressure pulse wave is detected by the second blood pressure determining means. Suppose that an accurate photoplethysmogram cannot be obtained due to ambient light or the like and the first blood pressure determination means cannot accurately measure blood pressure, then an algorithm is applied to the pressure pulse wave information obtained by the second blood pressure determination means. application to determine the blood pressure value and adopt this measurement result. As a result, the second blood pressure determining means is free from the disadvantages of the first blood pressure determining means, that is, the measurement results are not influenced by ambient light, skin color, misalignment of the sensor mounting position, etc., and accurate measurement results can be obtained.
【０００８】[0008]
【実施例】図２は、この発明に係る指用電子血圧計の具
体的な一実施例を示す回路ブロック図である。Embodiment FIG. 2 is a circuit block diagram showing a specific embodiment of the electronic finger blood pressure monitor according to the present invention.
【０００９】指用電子血圧計は、指カフ１と、加圧ポン
プ２、急速排気弁３、微速排気弁４がそれぞれエアチュ
ーブ１１を介して接続され空気系を形成している。そし
て、加圧ポンプ２、急速排気弁３は後述するＭＰＵ５に
電気的に接続され、駆動制御されるようになっている。The electronic finger blood pressure monitor has a finger cuff 1, a pressure pump 2, a rapid exhaust valve 3, and a slow exhaust valve 4 connected to each other via an air tube 11 to form an air system. The pressurizing pump 2 and the rapid exhaust valve 3 are electrically connected to an MPU 5, which will be described later, so that their driving is controlled.
【００１０】この指用電子血圧計は、二つの異なる方式
の血圧決定手段を備えた点にある。即ち、第１の血圧決
定手段は所謂、光電脈波容積振動法方式であり、第２の
血圧決定手段は所謂オシロメトリック方式である。第１
の血圧決定手段として、指カフ１内に発光素子（ＬＥＤ
）１ａと、受光素子（フォトトランジスタ）１ｂが配備
されている。この発光素子１ａは、Ｄ／Ａ変換器１２を
介してＭＰＵ５に電気的に接続されており、発光素子１
ａから発する光が指動脈に照射される。受光素子１ｂは
、この反射光を受光し、受光信号をフィルタ６、増幅回
路７、Ａ／Ｄ変換器８を介してＭＰＵ５に送る。更に、
第２の血圧決定手段として、エアチューブ１１に圧力セ
ンサ９が配備されており、この圧力センサ９は増幅器１
０、Ａ／Ｄ変換器８を介してＭＰＵ５に電気的に接続さ
れている。圧力センサ９は、動脈壁の振動により振動す
るカフ１内の空気圧を検出し、ＭＰＵ５に空気圧信号を
送る。ＭＰＵ５は、第１の血圧決定手段による血圧決定
機能と、第２の血圧決定手段による血圧決定機能を有し
ている。つまり、受光素子１ｂから取り込んだ光電脈波
信号にアルゴリズムを適用して血圧値（最高血圧値、最
低血圧値）を算出する機能と、圧力センサ９より取り込
んだ圧脈波信号にアルゴリズムを適用して血圧値（最高
血圧値、最低血圧値）を算出する機能を有している。実
施例では、第１の血圧決定手段（光電脈波方式）を主の
血圧決定手段に設定し、この第１の血圧決定手段の測定
結果が成功か否かを判断し、仮に外乱光等の影響により
正しい測定結果が得られなかったと判断した場合に、従
である第２の血圧決定手段（圧脈波方式）により決定さ
れた血圧値を測定結果として採用する。また、ＭＰＵ５
は測定結果を表示器（ＬＣＤ）１３に表示させる。[0010] This electronic finger sphygmomanometer is equipped with two different types of blood pressure determining means. That is, the first blood pressure determining means is a so-called photoplethysmographic volume oscillation method, and the second blood pressure determining means is a so-called oscillometric method. 1st
A light emitting element (LED) is installed inside the finger cuff 1 as a blood pressure determining means.
) 1a and a light receiving element (phototransistor) 1b are provided. This light emitting element 1a is electrically connected to the MPU 5 via a D/A converter 12.
The light emitted from a is irradiated onto the finger artery. The light receiving element 1b receives this reflected light and sends a received light signal to the MPU 5 via the filter 6, the amplifier circuit 7, and the A/D converter 8. Furthermore,
As a second blood pressure determining means, a pressure sensor 9 is disposed in the air tube 11, and this pressure sensor 9 is connected to the amplifier 1.
0, is electrically connected to the MPU 5 via an A/D converter 8. The pressure sensor 9 detects the air pressure inside the cuff 1 that vibrates due to the vibration of the artery wall, and sends an air pressure signal to the MPU 5. The MPU 5 has a blood pressure determining function using a first blood pressure determining means and a blood pressure determining function using a second blood pressure determining means. In other words, there is a function that applies an algorithm to the photoplethysmogram signal taken in from the light receiving element 1b to calculate blood pressure values (systolic blood pressure value, diastolic blood pressure value), and a function that applies an algorithm to the pressure pulse wave signal taken in from the pressure sensor 9. It has a function to calculate blood pressure values (systolic blood pressure value, diastolic blood pressure value). In the embodiment, the first blood pressure determining means (photoplethysmography method) is set as the main blood pressure determining means, and it is determined whether the measurement result of the first blood pressure determining means is successful or not. If it is determined that a correct measurement result could not be obtained due to the influence, the blood pressure value determined by the second blood pressure determination means (pressure pulse wave method) which is a subsidiary is adopted as the measurement result. Also, MPU5
displays the measurement results on the display (LCD) 13.
【００１１】図１は、実施例指用電子血圧計の具体的な
処理動作を示すフローチャートである。電源回路１４の
電源スイッチ１５をＯＮすると、血圧測定の準備処理が
行われる〔ステップ（以下、ＳＴという）１〕。ＳＴ２
では、電源スイッチ１５が再びＯＮされたか否かを判定
している。仮に、測定中止等の理由で被測定者が電源ス
イッチ１５をＯＮすると、このＳＴ２の判定がＹＥＳと
なって電源がオフする。しかし、血圧測定をする場合は
電源スイッチを押さないので、ＳＴ２の判定がＮＯとな
って次のＳＴ３へ進む。ＳＴ３では、加圧スイッチがＯ
Ｎか否かを判定している。つまり、測定開始スイッチ１
６がＯＮされたか否かを判定している。測定開始スイッ
チ１６が押されると、加圧ポンプ２が駆動しカフ１を加
圧する（ＳＴ４）。そして、このカフ１が加圧目標値ま
で加圧され、指動脈が阻血されたところで、加圧を停止
してカフ１を微速排気する。このカフ微速排気過程にお
いて、第１の血圧決定手段（光電脈波方式）と第２の血
圧決定手段（圧脈波方式）により、脈波が検出される。
つまり、第１の血圧決定手段では、発光素子１ａにより
動脈に光が照射され、血流により反射された反射光を受
光素子１ｂで受光し、この受光量データ（動脈内の血流
量により変化する反射量）を脈波として検出し、ＭＰＵ
５が取り込む（ＳＴ５）。同時に、第２の血圧決定手段
では、圧力センサ９が圧脈波を検出する。つまり、カフ
１内の空気圧、つまり圧迫量に応じて変化する振動振幅
（脈動に対応する動脈壁の振動がカフを通じて振動する
カフ内の空気圧）を脈波として検出し、ＭＰＵ５が取り
込む（ＳＴ６）。ＳＴ７では、測定が終了したか否かを
判定している。つまり、アルゴリズムを適用して血圧値
を算出し得る程度にまで、脈波情報が捕捉できたか否か
を判定している。充分な脈波情報が得られるまで、ＳＴ
５乃至ＳＴ７が巡回し、測定が終了したとすると、この
ＳＴ７の判定がＹＥＳとなる。そして、第１の血圧決定
手段（光電脈波方式）により、血圧値が決定される。つ
まり、検出した光電脈波にアルゴリズムを適用して最高
血圧値と最低血圧値とを算出する（ＳＴ８）。FIG. 1 is a flowchart showing specific processing operations of the digital finger blood pressure monitor according to the embodiment. When the power switch 15 of the power supply circuit 14 is turned on, preparation processing for blood pressure measurement is performed [Step (hereinafter referred to as ST) 1]. ST2
Now, it is determined whether the power switch 15 has been turned on again. If the person to be measured turns on the power switch 15 for reasons such as stopping measurement, the determination in ST2 becomes YES and the power is turned off. However, when measuring blood pressure, the power switch is not pressed, so the determination in ST2 becomes NO and the process proceeds to the next ST3. In ST3, the pressure switch is set to O.
It is determined whether it is N or not. In other words, measurement start switch 1
It is determined whether or not 6 is turned on. When the measurement start switch 16 is pressed, the pressurizing pump 2 is driven to pressurize the cuff 1 (ST4). Then, when the cuff 1 is pressurized to the target pressurization value and the finger artery is blocked, the pressurization is stopped and the cuff 1 is evacuated at a slow speed. During this cuff slow evacuation process, a pulse wave is detected by the first blood pressure determination means (photoplethysmogram method) and the second blood pressure determination means (pressure pulse wave method). That is, in the first blood pressure determination means, light is irradiated onto the artery by the light emitting element 1a, and the reflected light reflected by the blood flow is received by the light receiving element 1b. The amount of reflection) is detected as a pulse wave, and the MPU
5 takes it in (ST5). At the same time, in the second blood pressure determining means, the pressure sensor 9 detects a pressure pulse wave. In other words, the air pressure inside the cuff 1, that is, the vibration amplitude that changes depending on the amount of compression (the air pressure inside the cuff at which the vibration of the artery wall corresponding to the pulsation vibrates through the cuff) is detected as a pulse wave, and the MPU 5 captures it (ST6). . In ST7, it is determined whether the measurement has ended. In other words, it is determined whether pulse wave information has been captured to the extent that a blood pressure value can be calculated by applying an algorithm. ST until sufficient pulse wave information is obtained.
Assuming that steps 5 to ST7 have been repeated and the measurement has been completed, the determination in ST7 is YES. Then, the blood pressure value is determined by the first blood pressure determination means (photoplethysmography method). That is, the algorithm is applied to the detected photoplethysmogram to calculate the systolic blood pressure value and the diastolic blood pressure value (ST8).
【００１２】ＳＴ９では、第１の血圧決定手段により得
られた血圧値が正確か否かを判定している。この第１の
血圧決定手段により得られた血圧値が正確（血圧決定成
功）であると判定された場合は、このＳＴ９の判定がＹ
ＥＳとなり、この血圧値が採用されて表示器１３に表示
される（ＳＴ１２）。逆に、例えば、外乱光による光電
脈波の影響、光電センサ装着の位置ずれ等の理由によっ
て、正確な光電脈波が検出し得ておらず、測定結果が適
正でない、つまり血圧決定失敗と判断された場合は、こ
のＳＴ９の判定がＮＯとなり、この測定結果は採用され
ず、次のＳＴ１０へ進む。ここで、第２の血圧決定手段
により検出された圧脈波情報に基づいて血圧決定処理が
実行される（ＳＴ１０）。つまり、検出された圧脈波情
報にアルゴリズムを適用して血圧値を算出する。ＳＴ１
１では、この第２の血圧決定手段により得られた測定結
果が正しいか否かを判定している。通常、第２の血圧決
定手段では外乱光あるいは光電センサ装着の位置ずれ等
の理由によって測定が失敗する等のことはないから、こ
のＳＴ１１の判定がＹＥＳとなり、第２の血圧決定手段
の測定結果が採用され、表示器１３に表示される（ＳＴ
１２）。しかし、仮に第２の血圧決定手段の測定結果が
正しくない（血圧決定失敗）と判断された場合は、ＳＴ
１１の判定がＮＯとなり、エラー処理、つまり測定エラ
ーの表示がなされる（ＳＴ１３）。[0012] In ST9, it is determined whether the blood pressure value obtained by the first blood pressure determination means is accurate. If it is determined that the blood pressure value obtained by this first blood pressure determination means is accurate (successful blood pressure determination), the determination in ST9 is Y.
ES, and this blood pressure value is adopted and displayed on the display 13 (ST12). On the other hand, for example, due to the influence of external light on the photoplethysm wave, misalignment of the photoelectric sensor, etc., an accurate photoplethysmogram cannot be detected and the measurement result is incorrect, which means that the blood pressure determination has failed. If so, the determination in ST9 is NO, this measurement result is not adopted, and the process proceeds to the next ST10. Here, blood pressure determination processing is executed based on the pressure pulse wave information detected by the second blood pressure determining means (ST10). That is, the blood pressure value is calculated by applying an algorithm to the detected pressure pulse wave information. ST1
1, it is determined whether the measurement result obtained by this second blood pressure determination means is correct. Normally, the second blood pressure determining means does not fail in measurement due to disturbance light or misalignment of the photoelectric sensor, so the determination in ST11 is YES, and the measurement result of the second blood pressure determining means is is adopted and displayed on the display 13 (ST
12). However, if it is determined that the measurement result of the second blood pressure determination means is incorrect (blood pressure determination failure), the ST
The determination in step 11 is NO, and error processing, that is, a measurement error is displayed (ST13).
【００１３】[0013]
【発明の効果】この発明では、以上のように、異なる方
式の２つの血圧決定手段を併用し、第１の血圧決定手段
による血圧測定が成功である場合は、この第１の血圧決
定手段の測定結果を採用し、逆に第１の血圧決定手段が
測定失敗と判断された場合に、第２の血圧決定手段によ
り決定された血圧値を採用することとしたから、２つの
異なる血圧決定手段の互いの測定上の弱点を補うことが
でき、測定の確実度を大幅に向上させることが可能とな
る等、発明目的を達成した優れた効果を有する。Effects of the Invention As described above, in this invention, two blood pressure determination means of different methods are used together, and when the blood pressure measurement by the first blood pressure determination means is successful, the first blood pressure determination means The measurement result is adopted, and conversely, when it is determined that the first blood pressure determining means has failed in measurement, the blood pressure value determined by the second blood pressure determining means is adopted, so two different blood pressure determining means are used. It has excellent effects that achieve the purpose of the invention, such as being able to compensate for each other's weaknesses in measurement and greatly improving the reliability of measurement.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】実施例電子血圧計の処理動作を示すフローチャ
ートである。FIG. 1 is a flowchart showing processing operations of an electronic blood pressure monitor according to an embodiment.
【図２】実施例電子血圧計の回路構成を示すブロック図
である。FIG. 2 is a block diagram showing the circuit configuration of the electronic blood pressure monitor according to the embodiment.
１ 指用カフ ５ ＭＰＵ ９ 圧力センサ １ａ 発光素子 １ｂ 受光素子 1. Finger cuff 5 MPU 9 Pressure sensor 1a Light emitting element 1b Photo receiving element
Claims (1)
検出用発・受光素子と、カフの空気系に配備されたカフ
圧検出用圧力センサと、異なる方式の２つの血圧決定手
段と、第１の血圧決定手段により血圧測定が成功したか
否かを判断し、第１の血圧決定手段による血圧測定が成
功と判断された場合に、この血圧測定値を採用し、逆に
第１の血圧決定手段が測定失敗と判断された場合に、第
２の血圧決定手段により決定された血圧値を採用する光
電脈波並びに圧脈波の測定結果採用手段とから成る指用
電子血圧計。[Claim 1] A cuff, a pulse wave detection emitting/light receiving element disposed at an appropriate position on the cuff, a pressure sensor for cuff pressure detection disposed in the air system of the cuff, and two blood pressure determination means of different methods. Then, it is determined whether the blood pressure measurement was successful by the first blood pressure determination means, and if it is determined that the blood pressure measurement by the first blood pressure determination means was successful, this blood pressure measurement value is adopted, and conversely, the blood pressure measurement by the first blood pressure determination means is determined to be successful. An electronic finger sphygmomanometer comprising photoplethysmogram and pressure pulse wave measurement result adoption means that adopts the blood pressure value determined by the second blood pressure determination means when the first blood pressure determination means is determined to have failed in measurement. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02225991A JP3240324B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02225991A JP3240324B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04259448A true JPH04259448A (en) | 1992-09-16 |
| JP3240324B2 JP3240324B2 (en) | 2001-12-17 |
Family
ID=12077776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02225991A Expired - Fee Related JP3240324B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3240324B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006038589A1 (en) | 2004-10-06 | 2006-04-13 | Terumo Kabushiki Kaisha | Blood pressure measuring device and blood pressure measuring method |
| JP2009106610A (en) * | 2007-10-31 | 2009-05-21 | Nippon Koden Corp | Blood pressure calculation method for non-invasive blood pressure measurement apparatus |
| JP2010200895A (en) * | 2009-03-02 | 2010-09-16 | Terumo Corp | Sphygmomanometer |
| JP2018192240A (en) * | 2017-05-12 | 2018-12-06 | 研能科技股▲ふん▼有限公司 | Wearable device |
| JP2022524186A (en) * | 2019-03-06 | 2022-04-28 | チャームケア・カンパニー・リミテッド | Blood pressure measurement system and blood pressure measurement method using it |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4563766B2 (en) * | 2004-10-05 | 2010-10-13 | テルモ株式会社 | Blood pressure measurement device, blood pressure measurement method, control program, and computer-readable storage medium |
-
1991
- 1991-02-15 JP JP02225991A patent/JP3240324B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006038589A1 (en) | 2004-10-06 | 2006-04-13 | Terumo Kabushiki Kaisha | Blood pressure measuring device and blood pressure measuring method |
| EP1808123A1 (en) * | 2004-10-06 | 2007-07-18 | Terumo Kabushiki Kaisha | Blood pressure measuring device and blood pressure measuring method |
| EP1808123A4 (en) * | 2004-10-06 | 2009-09-09 | Terumo Corp | Blood pressure measuring device and blood pressure measuring method |
| JP2009106610A (en) * | 2007-10-31 | 2009-05-21 | Nippon Koden Corp | Blood pressure calculation method for non-invasive blood pressure measurement apparatus |
| US9017368B2 (en) | 2007-10-31 | 2015-04-28 | Nihon Kohden Corporation | Blood pressure calculation method for non-invasive blood pressure measurement apparatus |
| JP2010200895A (en) * | 2009-03-02 | 2010-09-16 | Terumo Corp | Sphygmomanometer |
| JP2018192240A (en) * | 2017-05-12 | 2018-12-06 | 研能科技股▲ふん▼有限公司 | Wearable device |
| JP2022524186A (en) * | 2019-03-06 | 2022-04-28 | チャームケア・カンパニー・リミテッド | Blood pressure measurement system and blood pressure measurement method using it |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3240324B2 (en) | 2001-12-17 |
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