JPH02255123A - Electronic sphygmomanometer - Google Patents
Electronic sphygmomanometerInfo
- Publication number
- JPH02255123A JPH02255123A JP1079365A JP7936589A JPH02255123A JP H02255123 A JPH02255123 A JP H02255123A JP 1079365 A JP1079365 A JP 1079365A JP 7936589 A JP7936589 A JP 7936589A JP H02255123 A JPH02255123 A JP H02255123A
- Authority
- JP
- Japan
- Prior art keywords
- cuff
- value
- pressure
- blood pressure
- pulse wave
- 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
- 230000036772 blood pressure Effects 0.000 claims abstract description 40
- 230000035487 diastolic blood pressure Effects 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 10
- 230000002526 effect on cardiovascular system Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000008280 blood Substances 0.000 abstract description 2
- 210000004369 blood Anatomy 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 26
- 230000008569 process Effects 0.000 description 22
- 230000035488 systolic blood pressure Effects 0.000 description 10
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 206010020772 Hypertension Diseases 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000001631 hypertensive effect Effects 0.000 description 2
- 101000760620 Homo sapiens Cell adhesion molecule 1 Proteins 0.000 description 1
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 101001139126 Homo sapiens Krueppel-like factor 6 Proteins 0.000 description 1
- 101000710013 Homo sapiens Reversion-inducing cysteine-rich protein with Kazal motifs Proteins 0.000 description 1
- 101000661807 Homo sapiens Suppressor of tumorigenicity 14 protein Proteins 0.000 description 1
- 208000001953 Hypotension Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000021822 hypotensive Diseases 0.000 description 1
- 230000001077 hypotensive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
この発明は、加圧過程において、血圧値を決定する電子
血圧計に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an electronic blood pressure monitor that determines blood pressure values during a pressurization process.
(ロ)従来の技術
電子血圧計は、カフにより被験者の被測定部位を圧迫し
、カフ内の空気圧(以下単にカフ圧という場合がある)
を微速で減圧又、は加圧し、その間のカフ圧及び被験者
の心血管情報(脈波、コロトコフ音等)を電気的に検出
して、最高血圧値及び最低血圧値を決定するものである
。減圧過程で血圧値決定を行う電子血圧計では、カフを
一旦、被験者の最高血圧値以上である加圧目標値にまで
加圧し、そこから減圧を開始するのであるが、高血圧患
者の場合等、最高血圧値の高い場合にも対応できるよう
、前記加圧目標値は高めに設定される。(b) Conventional technology Electronic blood pressure monitors use a cuff to press the subject's area to be measured, and the air pressure inside the cuff (hereinafter sometimes simply referred to as cuff pressure).
During this time, the cuff pressure and cardiovascular information (pulse waves, Korotkoff sounds, etc.) of the subject are electrically detected to determine the systolic blood pressure value and the diastolic blood pressure value. With electronic sphygmomanometers that determine blood pressure values during the decompression process, the cuff is first pressurized to a target pressure value that is higher than the subject's systolic blood pressure value, and then depressurization is started, but in the case of hypertensive patients, etc. The pressurization target value is set relatively high so as to be able to cope with cases where the systolic blood pressure value is high.
よって、健常者や低血圧患者にとっては必要以−hに高
い圧力で加圧されることとなり、これらの者に苦痛を与
えたり、欝血を生じさせるおそれがある。Therefore, healthy people and hypotensive patients will be pressurized at a pressure higher than necessary, which may cause pain or stasis to these people.
これに対して、加圧過程で血圧値を決定する電子血圧計
では、最高血圧値が決定されれば、その時点でカフの加
圧を中止して、2、速にカフ中の空気を排気し、被測定
部を解放する。このため、必要以上の圧力で加圧しない
ので、被験者に苦痛を与えたり、欝血を生じさせるおそ
れが少ない。特に近年、加圧ポンプの性能向上に伴い、
加圧過程で血圧測定を行う電子血圧君1の製品化が容易
となってきている。In contrast, with electronic blood pressure monitors that determine the blood pressure value during the pressurization process, once the systolic blood pressure value is determined, cuff pressurization is stopped at that point, and the air in the cuff is evacuated immediately. and release the part to be measured. Therefore, since pressure is not applied more than necessary, there is little risk of causing pain or stasis to the subject. Especially in recent years, with the improvement in the performance of pressurized pumps,
It is becoming easier to commercialize Electronic Blood Pressure-kun 1, which measures blood pressure during the pressurization process.
(ハ)発明が解決しようとする課題
上記加圧過程で血圧測定を行う電子血圧計では、カフを
0から最高血圧値まで微速で加圧するが、実際に微速で
加圧する必要があるのは、最低血圧値(蔽密には最低血
圧値より10〜20 mm11g程度低い値)から最高
血圧値までであり、0から最低血圧イ直までは微速で加
圧する必要がない。このため、従来の加圧過程で血圧測
定を行う電子血圧計では測定時間が長大化し、被験者に
苦痛や欝血を生じさせるおそれが生じ、加圧過程での血
圧測定の長所が生かせない。(C) Problems to be Solved by the Invention In the electronic blood pressure monitor that measures blood pressure during the pressurization process, the cuff is pressurized at a slow rate from 0 to the systolic blood pressure value, but it is actually necessary to pressurize at a slow rate. The range is from the diastolic blood pressure value (a value approximately 10 to 20 mm 11 g lower than the diastolic blood pressure value) to the systolic blood pressure value, and there is no need to pressurize at a slow speed from 0 to the diastolic blood pressure level. For this reason, with conventional electronic blood pressure monitors that measure blood pressure during the pressurization process, the measurement time becomes long and there is a risk of causing pain or congestion in the subject, making it impossible to take advantage of the advantages of measuring blood pressure during the pressurization process.
そこで、最低血圧値より少し下の設定値まで象、速に加
圧し、それ以降は微速で加圧することにより測定時間の
短縮化を図るものが提案されている。Therefore, a method has been proposed in which the pressure is increased rapidly up to a set value slightly below the diastolic blood pressure value, and thereafter the pressure is increased at a slow rate to shorten the measurement time.
しかし、この設定値は、いかなる被験者の最低血圧値よ
りも低く設定する必要があるため、20〜3QmmHg
という□低い値に設定されており、測定時間短縮の効果
は極めて小さかった。However, this set value needs to be set lower than the diastolic blood pressure value of any subject, so it is 20 to 3 QmmHg.
□ was set to a low value, and the effect of shortening measurement time was extremely small.
この発明は、上記に鑑みなされたもので、測定時間の短
縮化を図った電子血圧計のJに伊を目的としている。The present invention has been made in view of the above, and aims to provide an electronic blood pressure monitor that shortens measurement time.
(ニ)課題を解決するための手段
上記課題を解決するため、この発明の電子血圧計は、
:被験者に装着されるカフと、
ii:このカフ内の空気を急速又は微速に加圧する加圧
手段と、
iii :前記カフ内の空気圧が設定値に達した時に前
記加圧手段の加圧速度をや、速より微速に切替える加圧
速度切替手段と、
iV:前記カフ内の空気を急速に排気する急速排気手段
と、
■=前記カフ内の空気圧を検出する圧力検出1段と、
■i:ii被験者の心血管情報を検出する心血管情報検
出手段と、
vii :この心血管情報検出手段で検出された心血管
情報と前記圧力検出手段で検出されたカフ内の空気圧と
に基づいて血圧値を決定する血圧値決定手段とを備えて
なるものにおいて、
viii :前記被験者より脈波情報を検出する脈波情
報検出手段と、
iX:この脈波情報検出手段で検出される脈波情報に基
づいて、前記カフ内の空気圧が最低血圧値決定可能な圧
力値より高いか否かを判定する急速加圧結果判定手段と
、
X:この急速加圧結果判定手段で前記カフ内の空気圧が
最低血圧値決定可能な圧力値より高いと判定された時、
前記茫、速排気手段を作動させ、このカフ内の空気圧を
所定量減圧する減圧手段とを備えてなることを特徴とす
るものである。(d) Means for Solving the Problems In order to solve the above problems, the electronic blood pressure monitor of the present invention includes: a cuff that is attached to a subject; and ii) pressurization that rapidly or slowly pressurizes the air within the cuff. means; iii: pressurization speed switching means for switching the pressurization speed of the pressurization means from fast to slow when the air pressure in the cuff reaches a set value; a rapid evacuation means for evacuation; (1) a pressure detection stage for detecting the air pressure in the cuff; (ii) a cardiovascular information detection means for detecting cardiovascular information of the subject; and vii: this cardiovascular information detection means. blood pressure value determining means for determining a blood pressure value based on the cardiovascular information detected by the patient and the air pressure within the cuff detected by the pressure detecting means, viii: receiving pulse wave information from the subject; a pulse wave information detecting means to detect; iX: determining whether the air pressure in the cuff is higher than a pressure value at which the diastolic blood pressure value can be determined, based on the pulse wave information detected by the pulse wave information detecting means; rapid pressurization result determination means;
The cuff is characterized by comprising a pressure reducing means for activating the quick evacuation means and reducing the air pressure within the cuff by a predetermined amount.
(ホ)作用
脈波情報より、現在のカフ圧が被験者の最低血圧値と比
してどのあたりにあるかを知ることができる。例えば脈
波振幅値は、第 図(C)に示すように、カフの加圧過
程で、カフ圧が平均血圧値(最高血圧値SYSと最低血
圧値DIAとの算術平均(iff)に達するまでは徐々
に増加し、その後は減少していく。最低血圧値DIAは
、脈波振幅値への増加過程中に現れるので、脈波振幅値
Aが所定の値より大きければ、カフ圧が最低血圧値決定
可能な圧力値よりも高いと判定することができる。もち
ろん脈波情報は脈波振幅値に限定されるものではない。(e) From the action pulse wave information, it is possible to know where the current cuff pressure is compared to the subject's diastolic blood pressure value. For example, as shown in Fig. increases gradually and then decreases.The diastolic blood pressure value DIA appears during the process of increase to the pulse wave amplitude value, so if the pulse wave amplitude value A is larger than a predetermined value, the cuff pressure becomes the diastolic blood pressure. It can be determined that the pressure value is higher than a determinable pressure value.Of course, the pulse wave information is not limited to the pulse wave amplitude value.
この発明の電子血圧計は、とりあえず設定した値までカ
フを急速に加圧し、この急速加圧の結果カフ圧が最低血
圧値決定可能な圧力値より高いか否かを脈波情報に基づ
いて判定する。この判定結果、カフ圧が最低血圧値決定
可能な圧力値より低い場合には、そのまま微速加圧を行
って血圧値を決定する。一方、この判定の結果カフ圧が
最低血圧値決定可能な圧力値より高い場合には、−月カ
フ圧を所定量減圧して、カフ圧が最低血圧値決定可能な
圧力値より低くしてから、血圧値を決定する。よって、
最低血圧値近傍まで急速加圧を行うことができるから、
血圧測定に要する時間を短縮することができる。The electronic blood pressure monitor of this invention rapidly pressurizes the cuff to a preset value, and determines based on pulse wave information whether or not the cuff pressure as a result of this rapid pressurization is higher than the pressure value at which the diastolic blood pressure can be determined. do. As a result of this determination, if the cuff pressure is lower than the pressure value at which the diastolic blood pressure value can be determined, slow pressurization is performed directly to determine the blood pressure value. On the other hand, if the cuff pressure is higher than the pressure value at which the diastolic blood pressure value can be determined as a result of this determination, the - month cuff pressure is reduced by a predetermined amount until the cuff pressure is lower than the pressure value at which the diastolic blood pressure value can be determined. , determine the blood pressure value. Therefore,
Because rapid pressurization can be performed to near the diastolic blood pressure value,
The time required for blood pressure measurement can be shortened.
(へ)実施例 この発明の一実施例を図面に基づいて以下に説明する。(f) Example An embodiment of the present invention will be described below based on the drawings.
この実施例は、この発明を腕用の電子血圧計に適用した
ものであり、第2図は、実施例電子血圧計の構成を説明
するブロック図である。2は、カフであり、加圧ポンプ
(加圧手段)3、圧力センサ(圧力検出手段)4及び急
速排気弁(急速排気手段)5が接続されている。加圧ポ
ンプ3はDCモータを備えており、このDCモータの回
転数はMPU6からのパルス信号によりPWM制御され
ている(アナログ制御でもよい)。また、圧力センサ4
は、検出圧力を発信周波数で表す方式のものが使用され
、そのカフ圧信号は、MPU6に取り込まれる。さらに
、急速排気弁5の開閉もMPU6により制御される。In this embodiment, the present invention is applied to an electronic blood pressure monitor for wrist use, and FIG. 2 is a block diagram illustrating the configuration of the electronic blood pressure monitor according to the embodiment. 2 is a cuff, to which a pressurizing pump (pressurizing means) 3, a pressure sensor (pressure detecting means) 4, and a quick exhaust valve (quick exhausting means) 5 are connected. The pressurizing pump 3 includes a DC motor, and the rotation speed of the DC motor is PWM controlled by a pulse signal from the MPU 6 (analog control may also be used). In addition, pressure sensor 4
A system in which the detected pressure is expressed by an oscillation frequency is used, and the cuff pressure signal is taken into the MPU 6. Furthermore, the opening and closing of the rapid exhaust valve 5 is also controlled by the MPU 6.
MPU6は、加圧ポンプ3、急速排気弁5を制御する機
能、圧力センサ4のカフ圧信号Cユよりカフ圧p ci
を算出する機能、またこのカフ圧信号C1より脈波成分
W、をデジタルフィルタリングにより抽出し、その振幅
値へ〇を抽出する機能、この振幅値A。を所定値αと比
較し、カフ圧p ciが最低血圧値決定のための値より
高いか否かを判定する機能、脈波振幅値A。及びカフ圧
P ciとから最高血圧値(sys) 、最低血圧値(
DrΔ)を決定する機能等を有している。The MPU 6 has a function of controlling the pressure pump 3 and the rapid exhaust valve 5, and receives the cuff pressure pci from the cuff pressure signal C of the pressure sensor 4.
A function to calculate the pulse wave component W from this cuff pressure signal C1 by digital filtering, and a function to extract 0 to its amplitude value, this amplitude value A. A function of comparing the pulse wave amplitude value A with a predetermined value α to determine whether the cuff pressure p ci is higher than the value for determining the diastolic blood pressure value. and cuff pressure Pci, systolic blood pressure value (sys), diastolic blood pressure value (
It has the function of determining DrΔ).
さらに、MPU6には、表示器7、加圧スイッチ8及び
加圧値設定スイッチ9とが接続されている。表示器7に
は、液晶表示器等が使用され、MPU6で決定された血
圧値が表示される。加圧値設定スイッチ9は、急速加圧
より微速加圧に切替えるための加圧値P c−vsを設
定するためのものである。Further, a display 7, a pressure switch 8, and a pressure value setting switch 9 are connected to the MPU 6. A liquid crystal display or the like is used as the display 7, and the blood pressure value determined by the MPU 6 is displayed. The pressurization value setting switch 9 is for setting a pressurization value P c-vs for switching from rapid pressurization to slow pressurization.
上述の所定値αは、この実施例では2〜4mm)Igに
しているが、その根拠は以下のようである。第4図は、
健常者及び高血圧患者(総数265)について、最低血
圧値を観測される時の脈波振幅値の度数分布を示してい
る。この図より、カフ圧p ciが最低血圧値に等しい
時の脈波振幅値は、大部分が1.5〜4.5 mmHg
の範囲に分布しているのが確認できる。この範囲の値に
αを設定すれば、加圧値P c−vsが最低血圧値付近
となる確率が最も高くできる。The above-mentioned predetermined value α is set to 2 to 4 mm) Ig in this embodiment, and the basis thereof is as follows. Figure 4 shows
The frequency distribution of pulse wave amplitude values when diastolic blood pressure values are observed for healthy subjects and hypertensive patients (265 in total) is shown. From this figure, the pulse wave amplitude values when the cuff pressure p ci is equal to the diastolic blood pressure value are mostly 1.5 to 4.5 mmHg.
It can be seen that the distribution is within the range of . If α is set to a value within this range, the probability that the pressurization value P c-vs will be near the diastolic blood pressure value can be maximized.
次に、この実施例電子血圧計の動作を説明する。Next, the operation of this embodiment of the electronic blood pressure monitor will be explained.
まず、カフ2を被験者の上腕部に巻き付けると共に、電
子血圧計の電源をオンし、加圧値設定スイッチ9で加圧
値P c−vsを設定する。電源がオンされると、加圧
スイッチ8がオンされたか否かを判定する〔ステップ(
以下STという)1、第1図(a)参照〕。このSTI
の判定がNOの場合には、この判定を繰り返して待機し
、YESの場合にはSr1へ分岐する。First, the cuff 2 is wrapped around the upper arm of the subject, the electronic blood pressure monitor is turned on, and the pressurization value setting switch 9 is used to set the pressurization value P c-vs. When the power is turned on, it is determined whether or not the pressure switch 8 is turned on [step (
(hereinafter referred to as ST)1, see FIG. 1(a)]. This STI
If the determination is NO, this determination is repeated and the process waits; if the determination is YES, the process branches to Sr1.
Sr1では、MPU6が急速排気弁5を「閉」にし、加
圧ポンプ3を作動させて急速加圧を開始させる(Sr1
)。そして、MPU6は、加圧値設定スイッチ9より加
圧値P c−vsを読み取る(Sr1)。In Sr1, the MPU 6 closes the rapid exhaust valve 5 and operates the pressurizing pump 3 to start rapid pressurization (Sr1
). Then, the MPU 6 reads the pressurization value P c-vs from the pressurization value setting switch 9 (Sr1).
Sr5では、MPU6はカフ圧信号C8を取込み、Sr
6では、このカフ圧信号C8よりカフ圧p ciを算出
する。Sr1では、このカフ圧p ciが、加圧値P
c−vs以上か否かを判定し、この判定がYESの場合
にはSr8へ分岐し、NOの場合には、Sr1へ分岐す
る。すなわちSr7の判定がYESになるまで、S 、
T 5〜ST7の処理が繰り返されることになる。In Sr5, the MPU6 takes in the cuff pressure signal C8, and
In step 6, cuff pressure p ci is calculated from this cuff pressure signal C8. In Sr1, this cuff pressure p ci is the pressurization value P
It is determined whether or not it is greater than or equal to c-vs, and if the determination is YES, the process branches to Sr8, and if the determination is NO, the process branches to Sr1. That is, until the determination of Sr7 becomes YES, S,
The processing from T5 to ST7 will be repeated.
Sr1でば、MPU6は加圧ポンプ3の加圧速度を微速
(例えば2〜5 mml+g/ sec )に切替えて
、微速加圧を開始させる。MP[J6は、カフ圧信号C
3よりデジタルフィルタリング処理により脈波信号W、
を抽出しく5T9)、さらに脈波振幅値へ〇を抽出する
(・5TIO)。If Sr1, the MPU 6 switches the pressurization speed of the pressurizing pump 3 to a slow speed (for example, 2 to 5 mml+g/sec) and starts slow pressurization. MP[J6 is cuff pressure signal C
From 3, the pulse wave signal W,
5T9), and further extract 〇 to the pulse wave amplitude value (・5TIO).
5TIIでは、抽出された脈波振幅値A、、が前述の所
定量αを越えているか否かを判定する。この判定がYE
Sの場合には、5T1Bへ分岐して、そのまま血圧決定
処理を行う。一方、5TIIの判定がNoの場合には5
T12へ分岐して、MPU6は現在のカフ圧Perを記
憶する。そして、MPU6は、急速排気弁を「開」にす
る(ST13)。At 5TII, it is determined whether the extracted pulse wave amplitude value A exceeds the predetermined amount α. This judgment is YES
In the case of S, the process branches to 5T1B and directly performs blood pressure determination processing. On the other hand, if the judgment of 5TII is No, 5
Branching to T12, the MPU 6 stores the current cuff pressure Per. Then, the MPU 6 opens the rapid exhaust valve (ST13).
急速排気弁5よりカフ2の排気が行われている間、MP
U6は、カフ圧信号C1を取込み(ST14)、カフ圧
p ciを算出する(ST15)。そして、STI 7
では、カフ圧Pc、とPcrとの差(PcP−PCi)
が所定の減圧量K (10〜30111111111!
程度)より大きいか否か判定する。この判定がNOの場
合には5T171へ分岐し、YESの場合には5T17
へ分岐する。S’T’17では、MPU6が栄、速排気
弁5を「閉」として、その後ST8へ戻る。While the cuff 2 is being evacuated from the rapid exhaust valve 5, the MP
U6 takes in the cuff pressure signal C1 (ST14) and calculates the cuff pressure p ci (ST15). And STI 7
Then, the difference between cuff pressure Pc and Pcr (PcP-PCi)
is the predetermined pressure reduction amount K (10~30111111111!
degree). If this judgment is NO, the process branches to 5T171, and if this judgment is YES, the process branches to 5T17.
Branch to. At S'T'17, the MPU 6 closes the quick exhaust valve 5, and then returns to ST8.
再びST8〜5TIIの処理が繰り返される。The processes of ST8 to ST5TII are repeated again.
すなわち、減圧後のカフ圧が最低血圧値決定できる値か
否かを判定する。5TIIの判定がNOとなるまで、減
圧処理(ST12〜17)が繰り返されることとなる。That is, it is determined whether the cuff pressure after decompression is a value that allows the diastolic blood pressure value to be determined. The pressure reduction process (ST12 to ST17) will be repeated until the determination of 5TII becomes NO.
なお、減圧処理は繰返さず1回だけ行う構成としてもよ
い。Note that the depressurization process may be performed only once without being repeated.
5TIIの判定がNOとなった場合には5T18へ分岐
する。5T1Bでは、オシロメトリック法により血圧値
決定処理を行う。例えば脈波振幅値A、、の最大値A
m a xを抽出し、脈波振幅値A7の増加側で最大値
A m a Qの70%となる脈波振幅値へ〇、2時の
カフ圧p ciを最低血圧値DIAと決定し、脈波振幅
値A。の減少側で最大値A13つの60%となる脈波振
幅値へ〇、6が抽出された時のカフ圧を最高血圧値SY
Sと決定する(第3図参照)。もちろん血圧値決定処理
の手法はこれに限定されるものではなく、コロトコフ法
も用いることができる。If the determination at 5TII is NO, the process branches to 5T18. In 5T1B, blood pressure value determination processing is performed using the oscillometric method. For example, the maximum value A of the pulse wave amplitude value A,
m a x is extracted, and the pulse wave amplitude value becomes 70% of the maximum value A m a Q on the increasing side of the pulse wave amplitude value A7. The cuff pressure p ci at 2 o'clock is determined as the diastolic blood pressure value DIA, Pulse wave amplitude value A. The cuff pressure when 6 is extracted is the systolic blood pressure value SY.
Determine S (see Figure 3). Of course, the method of blood pressure value determination processing is not limited to this, and the Korotkoff method can also be used.
5T19では、5T18の処理で最高血圧値、最低血圧
値が決定されたか否かを判定する。この判定がNoの場
合に5T1Bへ分岐し、YESの場合には、5T20へ
分岐する。5T20では、MPU6がパルス信号のデユ
ーティ比を零にして、加圧ポンプ3を停止させると共に
、急速排気弁5を「間」にして、カフ2を急速にJJj
気する。そして、決定された最高血圧値、最低血圧値を
表示器7に表示して(ST21)、測定を終了する。At 5T19, it is determined whether the systolic blood pressure value and the diastolic blood pressure value have been determined in the process of 5T18. If this determination is No, the process branches to 5T1B, and if this determination is YES, the process branches to 5T20. At 5T20, the MPU 6 sets the duty ratio of the pulse signal to zero, stops the pressurizing pump 3, and sets the rapid exhaust valve 5 to the "interval" position to rapidly pump the cuff 2.
I care. Then, the determined systolic blood pressure value and diastolic blood pressure value are displayed on the display 7 (ST21), and the measurement is ended.
なお、上記実施例では、減圧の際所定iKだけ減圧する
例を示しているが、この減圧がカフ圧が零又はその近傍
に達するまで行う構成としてもよい。この場合には、最
初の加圧値P c−vsよりも低い加圧値を自動的に設
定し、この加圧値まで再び急速加圧を行って、急速加圧
の結果を判定する。Although the above embodiment shows an example in which the pressure is reduced by a predetermined amount iK during depressurization, a configuration may be adopted in which this depressurization is performed until the cuff pressure reaches zero or its vicinity. In this case, a pressurization value lower than the initial pressurization value P c-vs is automatically set, rapid pressurization is performed again up to this pressurization value, and the result of rapid pressurization is determined.
また、上記実施例では、加圧値P c−vsを使用者が
設定できる構成としているが、この値P c−vsを固
定してもよく適宜設計変更可能である。Further, in the above embodiment, the pressurization value P c-vs can be set by the user, but this value P c-vs may be fixed and the design can be changed as appropriate.
(ト)発明の詳細
な説明したように、この発明の電子血圧計は、被験者よ
り脈波情報を検出する脈波情報検出手段と、この脈波情
報検出手段で検出される脈波情報に基づいて、カフ圧が
最低血圧値決定可能な圧力値より高いか否かを判定する
急速加圧結果判定手段と、この急速加圧結果判定手段で
カフ圧が最低血圧値決定可能な圧力値より高いと判定さ
れた時、急速排気手段を作動させ、このカフ圧を所定量
減圧する減圧手段とを備えてなるものであるから、測定
に要する時間が短縮化でき、苦痛や岩血の少ないという
、加圧過程での血圧値測定の長所を生かすことができる
。(G) As described in detail of the invention, the electronic blood pressure monitor of the present invention includes a pulse wave information detecting means for detecting pulse wave information from a subject, and a pulse wave information detecting means based on the pulse wave information detected by the pulse wave information detecting means. rapid pressurization result determining means for determining whether the cuff pressure is higher than a pressure value that allows the diastolic blood pressure value to be determined; This device is equipped with a pressure reducing means that activates a rapid evacuation means to reduce the cuff pressure by a predetermined amount when it is determined that the cuff pressure is the same, so the time required for measurement can be shortened, and there is less pain and blood flow. The advantage of measuring blood pressure during the pressurization process can be utilized.
第1図(a)及び第1図(b)は、この発明の一実施例
に係る電子血圧計の動作を説明するフロー図、第2図は
、同電子血圧計の構成を説明するブロック図、第3図は
、同電子血圧計の動作を説明するためのシーケンス図、
第4図は、最低血圧時の脈波振幅値の分布を説明する図
である。
22カフ・ 3:加圧ポンプ、4:圧力セン
サ、 5:急速排気弁、6:MPU0
特許出願人 立石電機株式会社代理人 弁理
士 中 村 茂 信1(a) and 1(b) are flow diagrams explaining the operation of an electronic blood pressure monitor according to an embodiment of the present invention, and FIG. 2 is a block diagram explaining the configuration of the electronic blood pressure monitor. , FIG. 3 is a sequence diagram for explaining the operation of the electronic blood pressure monitor,
FIG. 4 is a diagram illustrating the distribution of pulse wave amplitude values at the time of diastolic blood pressure. 22 cuff・3: Pressure pump, 4: Pressure sensor, 5: Rapid exhaust valve, 6: MPU0 Patent applicant: Tateishi Electric Co., Ltd. Agent, Patent attorney: Shigeru Nakamura
Claims (2)
急速又は微速に加圧する加圧手段と、前記カフ内の空気
圧が設定値に達した時に前記加圧手段の加圧速度を急速
より微速に切替える加圧速度切替手段と、前記カフ内の
空気を急速に排気する急速排気手段と、前記カフ内の空
気圧を検出する圧力検出手段と、前記被験者の心血管情
報を検出する心血管情報検出手段と、この心血管情報検
出手段で検出された心血管情報と前記圧力検出手段で検
出された前記カフ内の空気圧とに基づいて血圧値を決定
する血圧値決定手段とを備えてなる電子血圧計において
、 前記被験者より脈波情報を検出する脈波情報検出手段と
、この脈波情報検出手段で検出される脈波情報に基づい
て、前記カフ内の空気圧が最低血圧値決定可能な圧力値
より高いか否かを判定する急速加圧結果判定手段と、こ
の急速加圧結果判定手段で前記カフ内の空気圧が最低血
圧値決定可能な圧力値より高いと判定された時、前記急
速排気手段を作動させ、このカフ内の空気圧を所定量減
圧する減圧手段とを備えてなることを特徴とする電子血
圧計。(1) A cuff to be attached to a subject, a pressurizing means that pressurizes the air within the cuff rapidly or slowly, and when the air pressure within the cuff reaches a set value, the pressurizing speed of the pressurizing means is rapidly increased. a pressurization speed switching means for switching to a slower pressurization speed; a rapid evacuation means for rapidly evacuation of the air in the cuff; a pressure detection means for detecting the air pressure in the cuff; and a cardiovascular information for detecting cardiovascular information of the subject. Information detection means, and blood pressure value determination means for determining a blood pressure value based on the cardiovascular information detected by the cardiovascular information detection means and the air pressure in the cuff detected by the pressure detection means. In the electronic blood pressure monitor, a pulse wave information detection means detects pulse wave information from the subject, and the air pressure in the cuff can determine a diastolic blood pressure value based on the pulse wave information detected by the pulse wave information detection means. rapid pressurization result determining means for determining whether the air pressure in the cuff is higher than a pressure value that allows determination of the diastolic blood pressure value; An electronic sphygmomanometer characterized by comprising: a pressure reducing means that operates an exhaust means to reduce the air pressure within the cuff by a predetermined amount.
値を検出し、前記急速加圧結果判定手段は、この脈波振
幅値が所定の値より大きい時、前記カフ内の空気圧が最
低血圧値決定可能な圧力値より高いと判定する特許請求
の範囲第1項記載の電子血圧計。(2) The pulse wave information detection means detects a pulse wave amplitude value as pulse wave information, and the rapid pressurization result determination means determines that when the pulse wave amplitude value is larger than a predetermined value, the air pressure in the cuff is The electronic sphygmomanometer according to claim 1, which determines that the diastolic blood pressure value is higher than a determinable pressure value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1079365A JPH02255123A (en) | 1989-03-29 | 1989-03-29 | Electronic sphygmomanometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1079365A JPH02255123A (en) | 1989-03-29 | 1989-03-29 | Electronic sphygmomanometer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02255123A true JPH02255123A (en) | 1990-10-15 |
Family
ID=13687856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1079365A Pending JPH02255123A (en) | 1989-03-29 | 1989-03-29 | Electronic sphygmomanometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02255123A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002078685A (en) * | 2000-09-11 | 2002-03-19 | Citizen Watch Co Ltd | Pressurizing type hemodynamometer |
CN103284712A (en) * | 2012-02-24 | 2013-09-11 | 欧姆龙健康医疗事业株式会社 | Blood pressure measuring apparatus, blood pressure measurement method and blood pressure measurement program |
-
1989
- 1989-03-29 JP JP1079365A patent/JPH02255123A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002078685A (en) * | 2000-09-11 | 2002-03-19 | Citizen Watch Co Ltd | Pressurizing type hemodynamometer |
JP4522561B2 (en) * | 2000-09-11 | 2010-08-11 | シチズンホールディングス株式会社 | Pressurized blood pressure monitor |
CN103284712A (en) * | 2012-02-24 | 2013-09-11 | 欧姆龙健康医疗事业株式会社 | Blood pressure measuring apparatus, blood pressure measurement method and blood pressure measurement program |
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