JPH04259449A - Electronic sphygmomanometer - Google Patents
Electronic sphygmomanometerInfo
- Publication number
- JPH04259449A JPH04259449A JP3022271A JP2227191A JPH04259449A JP H04259449 A JPH04259449 A JP H04259449A JP 3022271 A JP3022271 A JP 3022271A JP 2227191 A JP2227191 A JP 2227191A JP H04259449 A JPH04259449 A JP H04259449A
- Authority
- JP
- Japan
- Prior art keywords
- cuff
- blood pressure
- pressurization
- pulse wave
- value
- 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 25
- 230000035488 systolic blood pressure Effects 0.000 claims description 45
- 238000000034 method Methods 0.000 description 10
- 230000035487 diastolic blood pressure Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011946 reduction process Methods 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
- 210000001367 artery Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010349 pulsation 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、カフ加圧中に最高血
圧の推定を行い、自動的に加圧目標値を決定する電子血
圧計に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blood pressure monitor that estimates systolic blood pressure during cuff pressurization and automatically determines a pressurization target value.
【０００２】0002
【従来の技術】カフの加圧中に、加圧目標値を自動的に
決定し、この決定した加圧目標値までカフを加圧して血
圧測定に移行する電子血圧計が知られている。従来のこ
の種、電子血圧計は、カフ加圧中の脈波信号を捕捉し、
脈波振幅の変化から最高血圧値を推定し、それに応じた
適正なカフ圧で加圧を停止することで、自動的にカフの
加圧設定を行うものである。この方式によれば、被測定
者に対応した理想的なカフ加圧が実行でき、カフ加圧の
過不足がなく正確な血圧測定が達成できる。2. Description of the Related Art Electronic blood pressure monitors are known that automatically determine a target pressure value while pressurizing a cuff, pressurize the cuff to the determined target pressure value, and proceed to blood pressure measurement. This type of conventional electronic blood pressure monitor captures pulse wave signals during cuff inflation,
The cuff pressure is automatically set by estimating the systolic blood pressure value from changes in pulse wave amplitude and stopping the pressurization at an appropriate cuff pressure accordingly. According to this method, ideal cuff pressurization corresponding to the subject can be performed, and accurate blood pressure measurement can be achieved without over- or under-pressurizing the cuff.
【０００３】0003
【発明が解決しようとする課題】上記、従来の電子血圧
計では、例えば、図５で示すように、所定の時間、所定
の加圧速度でカフを加圧する時、カフ加圧中に脈波振幅
を捕捉する。この加圧中に、最高血圧値を推定するにた
る複数の脈波振幅を得ることができた場合には、所定の
アルゴリズムを適用することで最高血圧値を推定でき、
この推定最高血圧値に所定圧分上昇した時点のカフ圧で
、カフの加圧停止させることで、理想的な加圧目標値を
得ることができる。しかし、図４で示すように、例えば
被測定者の腕が細い等により、カフ加圧速度が速くなり
すぎる。この場合、従来のように加圧速度が画一的であ
ると、何度繰り返してカフを加圧しても、一部の脈波を
捕らえられず、最高血圧値の決定に充分な脈波情報が得
られず、最高血圧を推定できない。従って、適正な加圧
目標値を決定できない不利があった。[Problems to be Solved by the Invention] In the above-mentioned conventional electronic blood pressure monitor, for example, as shown in FIG. Capture amplitude. During this pressurization, if it is possible to obtain multiple pulse wave amplitudes that are sufficient to estimate the systolic blood pressure value, the systolic blood pressure value can be estimated by applying a predetermined algorithm.
By stopping pressurization of the cuff at the time when the cuff pressure has increased by a predetermined pressure to this estimated systolic blood pressure value, an ideal pressurization target value can be obtained. However, as shown in FIG. 4, the cuff pressurization speed becomes too fast due to, for example, the subject's arm being thin. In this case, if the inflation rate is uniform as in the past, no matter how many times the cuff is inflated, some pulse waves may not be captured, and there is insufficient pulse wave information to determine the systolic blood pressure value. cannot be obtained and systolic blood pressure cannot be estimated. Therefore, there was a disadvantage that an appropriate pressurization target value could not be determined.
【０００４】この発明は、以上のような課題を解消させ
、カフ加圧中における脈波を確実に捕らえ、最高血圧推
定値を簡易迅速に算出し得、加圧の自動設定を確実に行
うことができる電子血圧計を提供することを目的とする
。[0004] The present invention solves the above-mentioned problems, reliably captures the pulse wave during cuff pressurization, easily and quickly calculates the estimated systolic blood pressure, and reliably performs automatic pressurization settings. The purpose is to provide an electronic blood pressure monitor that can.
【０００５】[0005]
【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、カフ加圧中に脈波を捕
捉し、捕捉した脈波に基づいて最高血圧値の推定を行い
、この推定最高血圧値より所定圧分上昇した時点で加圧
を停止する加圧目標値決定手段を備えた電子血圧計であ
って、前記加圧目標値決定手段は、脈波の一部が捕捉で
きず推定最高血圧値を決定できない場合に、カフ圧を所
定圧まで減圧し、且つカフ加圧速度を所定速度に減圧し
て再加圧するようにした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. Electronic blood pressure monitors capture pulse waves during cuff inflation, estimate the systolic blood pressure based on the captured pulse waves, and stop inflation when the estimated systolic blood pressure rises by a predetermined amount. The electronic sphygmomanometer is equipped with a pressure target value determination means, and the pressurization target value determination means reduces the cuff pressure to a predetermined pressure when a part of the pulse wave cannot be captured and the estimated systolic blood pressure value cannot be determined. Moreover, the cuff is characterized in that the cuff pressurization speed is reduced to a predetermined speed and the cuff is pressurized again.
【０００６】このような構成を有する電子血圧計では、
カフ加圧中に脈波を捕捉し、捕捉した脈波に基づいて最
高血圧値を推定し、この推定した最高血圧値より所定圧
分上昇した時点でカフの加圧を停止するものである。こ
の点において、従来の加圧目標値決定手段と異なる点は
ない。この発明のポイントは、所定時間、所定加圧速度
でカフを加圧した時点で、最高血圧値を決定するに充分
な脈波情報が得られたか否かを判断する。そして、例え
ば腕が細すぎること等により、カフ加圧速度が速すぎ、
例えばカフ圧が既に１８０ｍｍＨｇにまで到達している
のに、脈波の一部が捕捉できておらず、最高血圧値を推
定し得ないと判断された場合には、カフの加圧を停止す
る。この後、一旦、カフを急速減圧する。つまり、脈波
信号を充分に検出できる程度にまで、例えばカフ圧を３
０ｍｍＨｇ程度にまで減圧する。更に、加圧速度調整を
行う。つまり、脈波信号を確実に捕捉できる程度にまで
、例えばカフ加圧速度を７０％程度に調整する。そして
、この条件のもとでカフの再加圧を行い、カフ加圧中に
脈波信号を捕捉し最高血圧の推定を実行して、加圧目標
値を決定する。従って、仮に腕の細い人の場合でも確実
に最高血圧を推定でき、正確な加圧目標値を決定し得る
。[0006] In an electronic blood pressure monitor having such a configuration,
A pulse wave is captured during cuff pressurization, a systolic blood pressure value is estimated based on the captured pulse wave, and cuff pressurization is stopped when the estimated systolic blood pressure value rises by a predetermined amount. In this point, there is no difference from conventional pressurization target value determining means. The key point of this invention is to determine whether sufficient pulse wave information has been obtained to determine the systolic blood pressure value when the cuff is pressurized for a predetermined time and at a predetermined inflation rate. For example, if the arm is too thin, the cuff inflation speed may be too fast.
For example, if the cuff pressure has already reached 180 mmHg but part of the pulse wave cannot be captured and it is determined that the systolic blood pressure value cannot be estimated, cuff inflation is stopped. . After this, the cuff is once rapidly decompressed. In other words, the cuff pressure must be increased by, for example,
Reduce the pressure to about 0 mmHg. Furthermore, the pressurization speed is adjusted. That is, the cuff pressurization rate is adjusted to about 70%, for example, to the extent that the pulse wave signal can be captured reliably. Then, under these conditions, the cuff is re-inflated, a pulse wave signal is captured while the cuff is inflated, the systolic blood pressure is estimated, and a target inflating value is determined. Therefore, even in the case of a person with thin arms, the systolic blood pressure can be reliably estimated and an accurate pressurization target value can be determined.
【０００７】[0007]
【実施例】図２は、この発明に係る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 blood pressure monitor according to the present invention.
【０００８】電子血圧計は、カフ１と、カフを加圧する
加圧ポンプ２、カフを減圧する急速排気弁３、微速排気
弁４がそれぞれエアチューブ１０を介して接続され、空
気系が構成されている。この急速排気弁３及び加圧ポン
プ２は、後述するＭＰＵ５と電気的に接続してあり、Ｍ
ＰＵ５によりそれぞれ駆動が制御される。また、このエ
アチューブ１０にはカフ内圧力を検出する圧力センサ６
が配備してある。この圧力センサ６は、カフ１内の空気
圧を検出し、この検出信号をローパスフィルタ７を介し
てＡ／Ｄ変換器８に送り、Ａ／Ｄ変換器８ではこのアナ
ログ信号をデジタル信号に変換してＭＰＵ５に送信する
。この実施例の電子血圧計は、血圧決定手段としてオシ
ロメトリック方式を採用している。つまり、カフ１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１を通じてカフ１内の空気圧を振動させる。この
カフ１内の空気圧の振動を脈波として検出する。つまり
、圧力センサ６が検出するカフ圧信号に乗る脈波を取り
出して、脈波振幅値を求める。ＭＰＵ５は、捕捉した脈
波情報に所定（公知）のアルゴリズムを適用して、最高
血圧値及び最低血圧値を決定する。また、このＭＰＵ５
はカフ加圧中に捕捉した脈波情報から最高血圧推定処理
を実行し、推定した最高血圧値に所定圧（例えば１５ｍ
ｍＨｇ）を加えたカフ加圧を加圧目標値と決定する機能
を有する。更に、このＭＰＵ５は、カフ１を所定時間、
所定加圧速度で加圧した時点で、最高血圧推定に必要な
脈波情報が得られたか否かを判定する機能、および図３
で示すように、例えば既にカフ圧が１８０ｍｍＨｇにま
で到達しているのに、最高血圧推定に必要な脈波情報が
得られていないと判定した場合に、カフ１の加圧を停止
してカフ１を急速排気し、カフ圧が例えば３０ｍｍＨｇ
になるまで減圧させ、且つカフ加圧速度を所定加圧速度
の７０％に減速させた後、再加圧して最高血圧値を推定
し、加圧目標値を決定する機能を有する。また、このＭ
ＰＵ５はカフ減圧過程において決定した最高血圧値及び
最低血圧値を表示器９に表示させる機能を有している。[0008] The electronic blood pressure monitor has a cuff 1, a pressure pump 2 for pressurizing the cuff, a rapid exhaust valve 3 for decompressing the cuff, and a slow exhaust valve 4, each connected via an air tube 10 to form an air system. ing. The rapid exhaust valve 3 and the pressurizing pump 2 are electrically connected to the MPU 5, which will be described later.
Each drive is controlled by the PU5. The air tube 10 also includes a pressure sensor 6 for detecting the pressure inside the cuff.
is in place. This pressure sensor 6 detects the air pressure inside the cuff 1, and sends this detection signal to an A/D converter 8 via a low-pass filter 7, and the A/D converter 8 converts this analog signal into a digital signal. and transmits it to the MPU5. The electronic blood pressure monitor of this embodiment employs an oscillometric system as a blood pressure determining means. In other words, the artery wall compressed by the cuff 1 vibrates in response to the pulsations. This vibration amplitude changes depending on the amount of compression. This vibration causes the air pressure inside the cuff 1 to vibrate through the cuff 1. This vibration of air pressure within the cuff 1 is detected as a pulse wave. That is, the pulse wave that rides on the cuff pressure signal detected by the pressure sensor 6 is extracted and the pulse wave amplitude value is determined. The MPU 5 applies a predetermined (known) algorithm to the captured pulse wave information to determine the systolic blood pressure value and the diastolic blood pressure value. Also, this MPU5
executes systolic blood pressure estimation processing from the pulse wave information captured during cuff inflation, and adds a predetermined pressure (for example, 15m) to the estimated systolic blood pressure value.
It has a function to determine the cuff pressurization by adding mHg) as the pressurization target value. Furthermore, this MPU 5 holds the cuff 1 for a predetermined period of time.
A function to determine whether pulse wave information necessary for estimating systolic blood pressure has been obtained at the time of pressurization at a predetermined pressurization rate, and FIG.
As shown in , for example, if it is determined that the pulse wave information necessary for estimating systolic blood pressure has not been obtained even though the cuff pressure has already reached 180 mmHg, pressurization of cuff 1 is stopped and the cuff is removed. 1 is rapidly evacuated, and the cuff pressure is, for example, 30 mmHg.
After depressurizing the cuff until the cuff reaches 70% and slowing down the cuff inflation rate to 70% of the predetermined inflation rate, the cuff is inflated again to estimate the systolic blood pressure value and determine the target inflation value. Also, this M
The PU 5 has a function of displaying on the display 9 the systolic blood pressure value and the diastolic blood pressure value determined during the cuff decompression process.
【０００９】図１は、実施例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。カフ１を例えば上腕
に巻付け、測定スイッチを押すと、加圧ポンプ２が駆動
してカフ１の加圧が開始される。この時、同時に再設定
加圧の動作判別フラグＰが０に設定される〔ステップ（
以下、ＳＴという）１〕。そして、カフ１加圧中に脈波
情報検出が実行される（ＳＴ２）。ＳＴ３では、再設定
加圧が必要か否かを判定している。所定時間、所定加圧
速度でカフ１を加圧した時点で、最高血圧推定のための
脈波情報が検出されていないか否か、つまり、加圧速度
が速すぎて、脈波の捕捉が充分でないか否かを判定して
いる。最高血圧推定のための脈波情報が検出されていれ
ば、再設定加圧の必要はない。従って、このＳＴ３の判
定がＮＯとなり、次のＳＴ４へ進む。ＳＴ４では、最高
血圧推定値（ＳＰ）が決定出来たか否かを判定している
。最高血圧値が推定できるまで、ＳＴ２乃至ＳＴ４を巡
回する。いま、最高血圧値が推定できたとすると、この
ＳＴ４の判定がＹＥＳとなり、次のＳＴ５へ移行する。
ＳＴ５では、カフ１が加圧目標値に到達したか否かを判
定している。つまり、推定した最高血圧値に例えば１５
ｍｍＨｇ分上昇した状態までカフ１が加圧されたか否か
を判定している。カフ１が、加圧目標値まで加圧された
とすると、このＳＴ５の判定がＹＥＳとなり、加圧を停
止する（ＳＴ６）。そして、カフ１の減圧過程に移行し
、この減圧過程で得た脈波情報に基づき、最高血圧、最
低血圧を算出する血圧算出処理を実行する（ＳＴ８）。
ＳＴ９では、最低血圧値（ＤＰ）が算出されたか否かを
判定している。つまり、最高血圧値及び最低血圧値が決
定されたかを判定している。最高血圧及び最低血圧が決
定されれば、このＳＴ９の判定がＹＥＳとなり、カフ１
が急速排気され、決定した最高血圧値、最低血圧値が表
示器９に表示される（ＳＴ１０）。FIG. 1 is a flowchart showing specific processing operations of the electronic blood pressure monitor according to the embodiment. For example, when the cuff 1 is wrapped around the upper arm and a measurement switch is pressed, the pressurization pump 2 is driven and pressurization of the cuff 1 is started. At this time, the reset pressurization operation determination flag P is set to 0 at the same time [step (
(hereinafter referred to as ST)1]. Then, pulse wave information detection is executed while the cuff 1 is being pressurized (ST2). In ST3, it is determined whether or not reset pressurization is necessary. When cuff 1 is inflated for a predetermined time and at a predetermined inflation rate, is pulse wave information for estimating systolic blood pressure not detected? In other words, the inflation rate is too fast and the pulse wave cannot be captured. Determining whether it is insufficient. If pulse wave information for estimating systolic blood pressure has been detected, there is no need to reset pressurization. Therefore, the determination in ST3 is NO, and the process proceeds to the next ST4. In ST4, it is determined whether the estimated systolic blood pressure (SP) has been determined. ST2 to ST4 are repeated until the systolic blood pressure value can be estimated. Assuming that the systolic blood pressure value can now be estimated, the determination in ST4 is YES, and the process moves to the next ST5. In ST5, it is determined whether the cuff 1 has reached the target pressurization value. In other words, the estimated systolic blood pressure value is, for example, 15
It is determined whether the cuff 1 has been pressurized to a state where the pressure has increased by mmHg. Assuming that the cuff 1 is pressurized to the target pressurization value, the determination in ST5 becomes YES and pressurization is stopped (ST6). Then, the process moves to the pressure reduction process of the cuff 1, and based on the pulse wave information obtained in this pressure reduction process, a blood pressure calculation process is executed to calculate the systolic blood pressure and the diastolic blood pressure (ST8). In ST9, it is determined whether the diastolic blood pressure value (DP) has been calculated. In other words, it is determined whether the systolic blood pressure value and the diastolic blood pressure value have been determined. If the systolic blood pressure and diastolic blood pressure are determined, the judgment in ST9 becomes YES, and cuff 1
is rapidly evacuated, and the determined systolic blood pressure value and diastolic blood pressure value are displayed on the display 9 (ST10).
【００１０】一方、ＳＴ３で再設定加圧が必要と判定さ
れた場合、つまり被測定者の腕が細い場合等により、カ
フ１の加圧速度が速すぎ、例えばカフ圧が既に１８０ｍ
ｍＨｇにまで到達しているのに、最高血圧推定に必要な
脈波情報が得られていないと判定された場合には、この
ＳＴ３の判定がＹＥＳとなり、ＳＴ１１へ進む。ＳＴ１
１では、再設定加圧の動作判別フラグＰが「１」か否か
を判定している。つまり、既に一度再設定加圧を実行し
たか否かを判定している。この場合、始めて（１回目）
の再設定加圧であり、Ｐは「０」であるから、このＳＴ
１１の判定がＮＯとなり、ＳＴ１２でカフ１の加圧が停
止すると共に、急速排気（急速減圧）が実行される。そ
して、次のＳＴ１３ではカフ圧が３０ｍｍＨｇにまで減
圧されたか否かを判定している。つまり、脈波信号を充
分検出できる程度まで減圧されたか否かを判定している
。カフ１が３０ｍｍＨｇにまで減圧されたとすると、こ
のＳＴ１３の判定がＹＥＳとなり、続いてカフ１の加圧
速度を所定速度の７０％に設定して、再加圧が実行され
る（ＳＴ１４）。つまり、腕が細すぎる場合でも、脈波
信号を確実に捕捉できる程度に加圧速度を調整する（図
３参照）。そして、ここで再設定加圧の動作判別フラグ
Ｐを「１」に設定して（ＳＴ１５）、ＳＴ２へ戻り、こ
の加圧速度のもとで血圧推定処理を実行し、以下、上記
と同様に最高血圧推定処理、加圧目標値決定処理が実行
される。尚、この実施例では再設定加圧は１度しか実行
せず、再度の再設定加圧においても再設定加圧が必要と
の判定が出た場合（ＳＴ３）は、カフ１の巻付け方が正
しくない等として、ＳＴ１１からＳＴ１０へ移行し、血
圧測定を中止する。On the other hand, if it is determined in ST3 that reset pressure is necessary, that is, if the subject's arm is thin, the speed of inflation of cuff 1 is too fast, and for example, the cuff pressure has already reached 180 m.
If it is determined that the pulse wave information necessary for estimating the systolic blood pressure has not been obtained even though the blood pressure has reached mHg, the determination in ST3 becomes YES and the process proceeds to ST11. ST1
1, it is determined whether the reset pressurization operation determination flag P is "1" or not. In other words, it is determined whether or not reset pressurization has already been performed once. In this case, for the first time (first time)
This is the reset pressure of ST, and since P is "0", this ST
The determination in step 11 is NO, and the pressurization of the cuff 1 is stopped in ST12, and rapid evacuation (rapid decompression) is performed. Then, in the next step ST13, it is determined whether the cuff pressure has been reduced to 30 mmHg. In other words, it is determined whether or not the pressure has been reduced to a level where a pulse wave signal can be sufficiently detected. Assuming that the cuff 1 is depressurized to 30 mmHg, the determination in ST13 becomes YES, and then the pressurization speed of the cuff 1 is set to 70% of the predetermined speed, and re-pressurization is executed (ST14). In other words, even if the arm is too thin, the pressurization speed is adjusted to such an extent that the pulse wave signal can be reliably captured (see FIG. 3). Then, the reset pressurization operation determination flag P is set to "1" (ST15), the process returns to ST2, and the blood pressure estimation process is executed under this pressurization speed. Systolic blood pressure estimation processing and pressurization target value determination processing are executed. In addition, in this embodiment, reset pressure is executed only once, and if it is determined that reset pressure is required for the second reset pressure (ST3), the way the cuff 1 is wrapped is changed. It is determined that it is incorrect, etc., and the process moves from ST11 to ST10, and the blood pressure measurement is stopped.
【００１１】上記、実施例では再設定加圧が必要か否か
の判断基準として、所定時間、所定加圧速度のもとで、
最高血圧推定に必要な脈波情報が得られたか否かを判定
基準とした例を示したが、この発明はこれに限らず、例
えばカフ１の内圧が１４０ｍｍＨｇにまで到達しても一
度も脈波が検出できない場合、或いは２２０ｍｍＨｇま
で加圧しても脈波の下降線が得られない場合等に、再設
定加圧が必要であると判定しても良い。[0011] In the above-mentioned embodiment, the criteria for determining whether or not reset pressurization is necessary are as follows:
Although an example has been shown in which the determination criterion is whether or not pulse wave information necessary for estimating systolic blood pressure has been obtained, the present invention is not limited to this. If a wave cannot be detected, or if a descending line of the pulse wave cannot be obtained even after pressurizing to 220 mmHg, it may be determined that reset pressurization is necessary.
【００１２】0012
【発明の効果】この発明では、以上のように、カフ加圧
中に脈波の一部が捕捉できず推定最高血圧値を決定でき
ない場合に、カフ圧を所定圧まで減圧し、且つカフ加圧
速度を所定速度に減速して再加圧することとしたから、
腕が細い等により加圧速度が速すぎ、最高血圧を推定で
きないため適正な加圧目標値を決定できない等の不利が
解消でき、迅速で簡易に、しかも加圧目標値を確実に決
定できる等、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 the case where a part of the pulse wave cannot be captured during cuff inflation and the estimated systolic blood pressure value cannot be determined, the cuff pressure is reduced to a predetermined pressure and the cuff is inflated. Since we decided to reduce the pressure speed to a predetermined speed and repressurize,
Disadvantages such as inability to determine an appropriate pressurization target value due to the inability to estimate systolic blood pressure due to the inflating speed being too fast due to thin arms, etc. can be eliminated, and the pressurization target value can be determined quickly, easily, and reliably. , has an excellent effect of achieving the purpose of the invention.
【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例を示すブロック
図である。FIG. 2 is a block diagram showing an example of the circuit configuration of the electronic blood pressure monitor according to the embodiment.
【図３】実施例電子血圧計による加圧目標値決定の状態
を示す説明図である。FIG. 3 is an explanatory diagram showing a state of pressurization target value determination by the electronic blood pressure monitor according to the embodiment.
【図４】加圧速度が速すぎるために最高血圧を推定でき
ない場合を示す説明図である。FIG. 4 is an explanatory diagram showing a case where the systolic blood pressure cannot be estimated because the pressurization rate is too fast.
【図５】加圧速度が適当であり最高血圧を推定できる場
合を示す説明図である。FIG. 5 is an explanatory diagram showing a case where the pressurization rate is appropriate and the systolic blood pressure can be estimated.
１ カフ ５ ＭＰＵ ６ 圧力センサ 1 Cuff 5 MPU 6 Pressure sensor
Claims (1)
に基づいて最高血圧値の推定を行い、この推定最高血圧
値より所定圧分上昇した時点で加圧を停止する加圧目標
値決定手段を備えた電子血圧計において、前記加圧目標
値決定手段は、脈波の一部が捕捉できず推定最高血圧値
を決定できない場合に、カフ圧を所定圧まで減圧し、且
つカフ加圧速度を所定速度に減速して再加圧するように
したことを特徴とする電子血圧計。Claim 1: A pressurization device that captures a pulse wave during cuff inflation, estimates a systolic blood pressure value based on the captured pulse wave, and stops inflation when the estimated systolic blood pressure value rises by a predetermined amount. In the electronic sphygmomanometer equipped with a pressure target value determination means, the pressurization target value determination means reduces the cuff pressure to a predetermined pressure when a part of the pulse wave cannot be captured and the estimated systolic blood pressure value cannot be determined; An electronic blood pressure monitor characterized in that the cuff is pressurized again by slowing down the cuff pressurization speed to a predetermined speed.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3022271A JP2985316B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
| DE69223662T DE69223662T2 (en) | 1991-02-15 | 1992-02-17 | Electronic blood pressure monitor |
| EP92102618A EP0499289B1 (en) | 1991-02-15 | 1992-02-17 | Electronic blood pressure meter |
| DE69233199T DE69233199T2 (en) | 1991-02-15 | 1992-02-17 | Electronic blood pressure monitor |
| EP97109960A EP0808604B1 (en) | 1991-02-15 | 1992-02-17 | Electronic blood pressure meter |
| AT92102618T ATE161406T1 (en) | 1991-02-15 | 1992-02-17 | ELECTRONIC BLOOD PRESSURE MONITOR |
| US07/836,651 US5323782A (en) | 1991-02-15 | 1992-02-18 | Electronic blood pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3022271A JP2985316B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04259449A true JPH04259449A (en) | 1992-09-16 |
| JP2985316B2 JP2985316B2 (en) | 1999-11-29 |
Family
ID=12078103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3022271A Expired - Fee Related JP2985316B2 (en) | 1991-02-15 | 1991-02-15 | Electronic sphygmomanometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2985316B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6602200B1 (en) | 1999-09-08 | 2003-08-05 | Omron Corporation | Electronic blood pressure meter |
| JP2006288627A (en) * | 2005-04-08 | 2006-10-26 | Terumo Corp | Blood pressure measuring apparatus, blood pressure measuring method and control program |
| JP2007029215A (en) * | 2005-07-25 | 2007-02-08 | Nippon Telegr & Teleph Corp <Ntt> | Sphygmomanometer control method and sphygmomanometer with control circuit |
-
1991
- 1991-02-15 JP JP3022271A patent/JP2985316B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6602200B1 (en) | 1999-09-08 | 2003-08-05 | Omron Corporation | Electronic blood pressure meter |
| JP2006288627A (en) * | 2005-04-08 | 2006-10-26 | Terumo Corp | Blood pressure measuring apparatus, blood pressure measuring method and control program |
| JP2007029215A (en) * | 2005-07-25 | 2007-02-08 | Nippon Telegr & Teleph Corp <Ntt> | Sphygmomanometer control method and sphygmomanometer with control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2985316B2 (en) | 1999-11-29 |
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