WO1980000005A1 - Blood pressure measurement system - Google Patents
Blood pressure measurement system Download PDFInfo
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- WO1980000005A1 WO1980000005A1 PCT/JP1979/000143 JP7900143W WO8000005A1 WO 1980000005 A1 WO1980000005 A1 WO 1980000005A1 JP 7900143 W JP7900143 W JP 7900143W WO 8000005 A1 WO8000005 A1 WO 8000005A1
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- Prior art keywords
- cuff
- sound
- blood pressure
- sounds
- blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02208—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the Korotkoff method
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02233—Occluders specially adapted therefor
Definitions
- the present invention relates to an improved blood pressure measuring instrument having improved accuracy of blood pressure measurement by improving the ability to identify a Korotkoff sound.
- an electric circuit converts a Korotkoff sound generated by an ischemic effect of a cuff band that presses a blood vessel by receiving a supply of pressurized air into an electric signal.
- a blood pressure measuring device that detects and displays the highest and lowest blood pressure values based on the onset and disappearance of the blood pressure, improvements have been made to the means for detecting changes in the internal air pressure in the cuff band and the means for processing the detected signals.
- the present invention relates to a blood pressure measurement device with improved ability to identify a Korotkoff sound.
- a force band is wrapped around the upper arm where the artery is located near the epidermis, and pressurized air is supplied into the cuff band at a speed of usually 20 to 30 'sec to increase the maximum systolic blood pressure by 10 to 20 miEg.
- the pressurized air in the cuff is gradually evacuated. Then, the arterial blood flow begins to pass at a high speed, and this causes a damped oscillation with a higher frequency than the arterial wave in the lateral direction from the blood vessel wall in synchronization with the arterial wave. This damped vibration is called the Korotkoff sound.
- the cuff pressure at the time when this Korotkoff sound starts to be generated is indirectly determined as the systolic blood pressure value.
- the cuff belt mentioned above! If the evacuation of) is continued further, the mouth and mouth sound may be heard for a while in synchronization with the pulse sound of the artery, but the artery is sufficiently opened and the blood flow is reduced. When the robot is in a prone state without swelling, a Korotkoff sound is less likely to occur. Then, the force pressure at the time of disappearance of the mouth sound is determined indirectly as the diastolic blood pressure value. ⁇ The above situation can be clearly explained by referring to the drawing in Fig. 1].
- the pulse sound, the Korotkoff sound, and the cuff pressure in the cuff band are The symbols (i) and (mouth) W are respectively shown, and the timing ti, respectively, indicates the timing of the onset and disappearance of the above-mentioned mouth-to-tone sound.
- the force full pressure between the Timing of t 0 or we t 3 is raised at a maximum pressure until the pre-serial, power off band in data 'Lee Mi in g t 3 is rapidly pressurized
- Appuku state is switched to the pressurized et slow exhaust state, in FIG shows the Timing of t 4 until in vibrating pressure Ru is decreased gradually.
- the cuff pressure is mistakenly recognized as a krotkoff sound, and the cuff pressure at that time is updated and stored, and the determination of the diastolic blood pressure value is incorrect! ). It is extremely difficult to distinguish the detected Korotkoff sounds from noises or sounds that should not be detected, and these points are important factors for improving the reliability of the automatic blood pressure monitor. Disclosure of invention, which is an obstacle
- a main object of the present invention is to provide a blood pressure measuring device capable of distinguishing between Korotkoff sounds and noise and improving the accuracy of blood pressure measurement.
- Another object of the present invention is to provide a blood pressure measuring apparatus capable of maintaining blood pressure measurement accuracy irrespective of the position at which the cuff band is attached to the arm.
- the fluctuation of the air pressure in the cuff is detected.
- the separation means for separating the Korotkoff sound and the pulse sound detected by the sensing means and the separated sounds are simultaneously output.
- the cuff band is formed by storing the sound force cuff together with the blood cuff in the outer bag, and the sensing means is arranged outside the cuff band, and a communication pipe is provided between the cuff band and the sound collection cuff.
- the schematic configuration of the blood pressure measuring device of the present invention is such that the cuff band 1 is separate from the blood cuff 2 as shown in FIG.
- the cuff 3 for sound collection prepared in the above is stored in an outer bag together with the cuff 2 for blood ischemia, and the cuff 2 for blood cuff is connected to the automatic decompression device 4 through the rubber tube 9.
- the sound-collecting cuff 3 is connected to a micro-phone sensor ⁇ "5 outside the power band 1 through a rubber tube 10".
- This microphone sensor 5 changes the atmospheric pressure in the sound collecting cuff 3, that is, the pulse sound (a) and the Korotkoff sound (mouth) as shown in FIG.
- the automatic pressurizing / depressurizing device 4 is composed of a pressurizing pump, a quick exhaust valve, and a slow exhausting valve, and a blood pressure value storage / display unit 12 connected to the automatic pressurizing / depressurizing device 4. Is a recognition discrimination circuit 11
- CVPI This is a device that stores and displays the pressure at that time in response to a command signal from it, and is composed of a pressure transducer, an A transducer, and a numeric display tube.
- FIG. 3 shows a specific example of the recognition discrimination circuit 11, and FIG. 3 ⁇ shows the output of the microphone mouth sensor 5 which senses fluctuations in the atmospheric pressure in the sound collecting force 3.
- Ri heavy tatami is Nodea was also of by cormorants to Myakuon and co-collected by filtration co-off sound, Myakuon this output and this through a high-pass full Note1 13 a low-pass off Lee Norre data I 4 Then, the Korotkoff sound is separated as shown in the figure.
- the voltage comparator detects a pulse sound and generates a pass signal synchronized with the pulse sound, and W shown in the figure.
- the voltage comparator ie detects the Krotkoff sound and detects the Krotkoff sound.
- the blood pressure measuring device of the present invention detects a pulse sound simultaneously with a Korotkoff sound, and therefore, a force probe which has conventionally been used for blood ischemia and sound collection is used as a fourth signal.
- a force probe which has conventionally been used for blood ischemia and sound collection is used as a fourth signal.
- the sound collection cuff 3 is not communicated with the blood cuff 2 and is formed as an independent hermetically sealed structure to prevent low-frequency pressure fluctuations such as pulse sounds from the microphone mouth sensor (5). ) So that it can be detected.
- a flexible sheet 6 such as cloth, soft PVC, or the like is interposed between the blood-absorbing force 2 and the sound-collecting force 3, and both surfaces thereof are bonded with an adhesive. Both cuffs 2 and 3 are attached.
- the sound collecting membrane 3 'of the sound collecting cuff 3 and the membrane 3' opposite to the sound collecting membrane 3 ' are given stiffness so that a low-frequency sound such as a pulse sound is generated on this surface 3 ". It prevents absorption and improves detection sensitivity, and can prevent noise from the blood cuff (2) lav.
- the sound-collecting cuff 3 has a sealed structure including the micro-phone sensor 5 attached to the tip of the flexible tube 10.
- the relationship between the sound collecting cuff 3, and the microphone mouth phone sensor 5 corresponds to the relationship between the sound collecting part of the stethoscope and the earpiece.
- the micro tube sensor 5 is not provided in the sound collecting cuff 3 but the flexible tube 10! ) It extends outside the cuff band 1 and is provided at the tip of the cuff band.]),
- the length of the air column is appropriately selected and the length of the air column is resonated with the co-dock sound.
- the detection sensitivity can be improved to facilitate the detection, and when the sensor 5 is disposed in the sound collecting cuff 3, the sensitivity is large due to the displacement between the sensor 1 and the artery.
- the conventional problem of fluctuation in width could be solved.
- the dimensions of the blood flow cuff 2 are generally considered to be 230 ⁇ 130, but the sound-collecting cuff 3 in the case of the sphygmomanometer according to the present invention is
- the length is standard male upper arm thickness
- FIG. 6 shows the connecting pipe 7 between the two cuffs 2 and 3 and the tubes 9 and 10 respectively connected thereto.
- two pipes 22 and 23 made of molded product or metal are connected by a flange 8, and this flange 8 is connected to the outer bag of the cuff band 1. It also serves as the upper part.
- FIG. 1 is an operation explanatory diagram also serving as an explanatory diagram of a conventional example
- FIG. 2 is a block diagram for explaining an electric circuit portion
- FIG. 3 is a specific circuit diagram of the main part of the recognition discrimination circuit.
- FIG. 4 is a perspective view of the cuff band.
- FIGS. 5 (a) and 5 (b) are cross-sectional and vertical cross-sectional views of FIG. 6 Figure is It is a perspective view of a coupling pipe.
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Abstract
Description
明 細 書 Specification
発明の名称 血 圧 測 疋 ¾ Title of invention Blood pressure measurement ¾
技術分野. Technical field.
この発明は、 コ ロ ト コ フ音の識別能力を向上させて血 圧測定の精度を高めた改良された血圧測.定器に関する。 TECHNICAL FIELD The present invention relates to an improved blood pressure measuring instrument having improved accuracy of blood pressure measurement by improving the ability to identify a Korotkoff sound.
そ して更に詳 し く は、 加圧空気の供給を受けて血管を圧 迫する カ フ帯に よ る阻血作用に よ り発現する コ ロ ト コ フ 音を電気信号に変換して電気回路で処理 し、 その発現、 消滅に よ 最高 /最低血圧値を検出 · 表示する血圧測定 器において、 カ フ帯内の内気圧の変動を検出する手段及 び検出された信号の処理手段に改良を加え、 コ ロ ト コ フ 音の識別能力を向上させた血圧測定器に関する。 More specifically, an electric circuit converts a Korotkoff sound generated by an ischemic effect of a cuff band that presses a blood vessel by receiving a supply of pressurized air into an electric signal. In a blood pressure measuring device that detects and displays the highest and lowest blood pressure values based on the onset and disappearance of the blood pressure, improvements have been made to the means for detecting changes in the internal air pressure in the cuff band and the means for processing the detected signals. In addition, the present invention relates to a blood pressure measurement device with improved ability to identify a Korotkoff sound.
背景技術 Background art
近年、 電気回路を使用 した 動式の血圧測定器が種々 提供されて ^るが、 これ らの血圧測定は一般に コ 口 ト コ フ に よ る聴診法を基礎に して る。 In recent years, various types of dynamic blood pressure measuring devices using electric circuits have been provided. However, these blood pressure measurements are generally based on a stethoscope method using a mouth-and-mouth method.
即ち、 その表皮付近に動脈が位置する上腕部に力 フ 帯 を巻き 、 通常 20 〜 30 'secの速度でカ フ帯内へ 加圧空 気を供給 し予想最高血圧値 よ 10 〜 20 miEg 高めの値に設 定 した最高圧力ま でに力 フ帯内圧力を上昇させて血流を 無 く した後に、 カ フ帯内加圧空気を徐々 に排気する と 、 この排気のある段階で動脈は僅かに開かれて、 動脈波血 流が高速度で通過 し始め、 これに よ ]? 血管壁か ら側方向 に動脈波 よ も 高 周'波数の減衰振動が動脈波と 同期 し て発生する。 この減衰振動を コ ロ ト コ フ 音 と呼んでいる That is, a force band is wrapped around the upper arm where the artery is located near the epidermis, and pressurized air is supplied into the cuff band at a speed of usually 20 to 30 'sec to increase the maximum systolic blood pressure by 10 to 20 miEg. After increasing the pressure in the cuff band to the maximum pressure set to the set value and eliminating blood flow, the pressurized air in the cuff is gradually evacuated. Then, the arterial blood flow begins to pass at a high speed, and this causes a damped oscillation with a higher frequency than the arterial wave in the lateral direction from the blood vessel wall in synchronization with the arterial wave. This damped vibration is called the Korotkoff sound.
ΟΛ',ΡΙΟΛ ', ΡΙ
WiPO , も ので、 この コ ロ ト コ フ音が発生 し始めた時のカ フ圧を 最高血圧値と して間接的に判別 して る。 そ して、 前記 の カ フ帯よ ！） の排気が更に継続される と 、 しば ら く は動 脈の脈音に同期 してコ 口 ト コ フ音が聞かれる も のであ る が、 動脈が充分に開かれて血流の く びれがない伏態に る と、 コ ロ ト コ フ 音は発生 し ¾ く な る。 そ して、 この コ 口 ト コ フ音の消滅時の力 フ圧を最低血圧値と して間接的 に判別 している も のである。 议上の様子は図面第 1 図の 図示に よ っ て 、 よ ]? 明 らかに説明する こ とができ 、 即ち、 脈音、 コ ロ ト コ フ音 、 カ フ帯のカ フ圧は夫々符号 (ィ） ， （口） Wをも つ て示され、 ま たタ イ ミ ン グ t i， は夫々 、 前記 したコ 口 ト コ フ音の発現及び消滅のタ ィ ミ ン グ を示 し、 しかして、 タ イ ミ ン グ t 0か ら t 3の間において 力 フ圧は前 記 した最高圧力ま で上昇され、 タ' イ ミ ン グ t 3において 力 フ帯は急速加圧伏態か ら緩排気状態に切換え られて、 図 示においてはタ イ ミ ン グ t 4ま でカ フ圧は徐々 に低下され る。 こ の カ フ圧の低下の過程において前記 した理由で コ ロ ト コ フ音が生 じる と （ タ イ ミ ン グ t i ) 、 この と き の力 フ圧 Piが最高血圧値と して検出され、 ま た コ 口 ト コ フ音 が消滅する と （ タ イ ミ ン グ t2 ) と の と き のカ フ圧 P2が最 低血圧値と して検出される も のである。 WiPO, Therefore, the cuff pressure at the time when this Korotkoff sound starts to be generated is indirectly determined as the systolic blood pressure value. And the cuff belt mentioned above! If the evacuation of) is continued further, the mouth and mouth sound may be heard for a while in synchronization with the pulse sound of the artery, but the artery is sufficiently opened and the blood flow is reduced. When the robot is in a prone state without swelling, a Korotkoff sound is less likely to occur. Then, the force pressure at the time of disappearance of the mouth sound is determined indirectly as the diastolic blood pressure value.议 The above situation can be clearly explained by referring to the drawing in Fig. 1]. That is, the pulse sound, the Korotkoff sound, and the cuff pressure in the cuff band are The symbols (i) and (mouth) W are respectively shown, and the timing ti, respectively, indicates the timing of the onset and disappearance of the above-mentioned mouth-to-tone sound. , Thus, the force full pressure between the Timing of t 0 or we t 3 is raised at a maximum pressure until the pre-serial, power off band in data 'Lee Mi in g t 3 is rapidly pressurized Appuku state is switched to the pressurized et slow exhaust state, in FIG shows the Timing of t 4 until in vibrating pressure Ru is decreased gradually. If a Korotkoff sound is generated during this cuff pressure reduction process (timing ti) for the reason described above, the force pressure Pi at this time is detected as the systolic blood pressure value. Then, when the tongue sound disappears (timing t 2 ), the cuff pressure P 2 at the time when the tongue sound disappears is detected as the diastolic blood pressure value.
と ころで上述の よ う な方法で最高 Z最低血圧値を判別 するに際 して問題 と な る と ころは、 第 1 図に よ つ て示さ れてい る よ う に測定の過程における コ ロ ト コ フ音の大き さは、 一般的に中間血圧値の と き に最大と な り 、 最高ノ The problem with determining the maximum and minimum diastolic blood pressure values by the above-mentioned method is that, as shown in Fig. 1, In general, the loudness of the tokoff sound becomes maximum at an intermediate blood pressure value,
0 ΡΙ 最低血圧値付近ではかな 小さな も の と な る特徵があ る こ と であ っ て、 即 ち特に最低血圧値を検出 しよ う とする 際にとの特徵に よ り コ 口 ト コ フ音の消滅を検知する こ と が困難であ る場合があ る こ と である。 又、 その他に も 、 多 く の被測定者の中には、 最高血圧値付近でコ ロ ト コ フ 音の発生がー且中断 した後、 再び発生する人や、 中間血 圧値において コ 口 ト コ フ音の発生が一時中断する不整脈 の入がいて、 同様に最低血圧値の判別が困難であ つ た 、 更に、 カ フ帯な どに人や物が接触した際の僅かる音を コ ロ ト コ フ音 と誤認 し、 これに よ つ て、 その時の カ フ圧を 更新記憶 して最低血圧値の判別測定に誤 ！） を生 じる と云 う 問題な どを も持つ も のであ った。 この よ う に検出され た コ ロ ト コ フ音を雑音若 し く は検出すべき でない音 と 区 別する こ とが極めて難 し く 、 これらの点が自動血圧計の 信頼性の向上に対する大き 障害と な つ てい る も のであ 発明.の開示 0 ΡΙ There is a characteristic that is very small near the diastolic blood pressure value.That is, especially when trying to detect the diastolic blood pressure value, the mouth sound is small. It is sometimes difficult to detect the disappearance of the water. In addition, among the many subjects, there are some subjects who have stopped producing the Korotkoff sound near the systolic blood pressure value and then reappeared, It was difficult to determine the diastolic blood pressure value due to the presence of arrhythmia, which interrupted the generation of the tocof noise.Furthermore, a slight sound when a person or object came into contact with the cuff band etc. The cuff pressure is mistakenly recognized as a krotkoff sound, and the cuff pressure at that time is updated and stored, and the determination of the diastolic blood pressure value is incorrect! ). It is extremely difficult to distinguish the detected Korotkoff sounds from noises or sounds that should not be detected, and these points are important factors for improving the reliability of the automatic blood pressure monitor. Disclosure of invention, which is an obstacle
そこで、 こめ発明の主な 目的は、 コ ロ ト コ フ音 と雑音 とを区別 し得て、 血圧の測定の精度を高め得る血圧測定 器を提供する こ と にある。 Therefore, a main object of the present invention is to provide a blood pressure measuring device capable of distinguishing between Korotkoff sounds and noise and improving the accuracy of blood pressure measurement.
そして、 この発明の他の 目的は、 不規則な =ι フ 音を発生する被測定者についても誤判別のない血圧測定 器 提供する こ と にあ る。 Another object of the present invention is to provide a blood pressure measuring device which does not make an erroneous determination even for a subject who generates irregular = ι noise.
そ して、 この発明の他の 目的は、 カ フ帯の腕部への取 付け位置に左右されずに血圧測定の精度が維持でき る血 Another object of the present invention is to provide a blood pressure measuring apparatus capable of maintaining blood pressure measurement accuracy irrespective of the position at which the cuff band is attached to the arm.
"¾υκど 4 "¾υκ-do 4
CMPI CMPI
W.FO v ' 圧測定器を提供する こ と にあ る。 W.FO v ' To provide a pressure measuring device.
そこで'、 この発明においては、 カ フ 内の気圧の変動を 検出す ¾感知手段よ 検出される コ ロ ト コ フ音と脈音 と を分離する分離手段と 、 分離された双方の音が同時に発 生 した場合には じめて夫れを コ ロ ト コ フ音 と して識別す る手段と を備える こ と に よ っ て、 ま た更には阻血用カ フ とは別個に用意 した集音用力 フ を阻血用 力 フ と共に外袋 に収納 してカ フ帯を構成 し、 且つ前記の感知手段はカ フ 帯の外部に配 し、 集音用カ フ との間は連通管にて連通さ せる こ と に よ っ て、 更には、 阻血用カ フ 、 集音用カ フ の 間には可撓性シー ト を介在させる こ と に よ っ て、 上記の 目的を達するための問題点を解決 している も のである。 Therefore, according to the present invention, in the present invention, the fluctuation of the air pressure in the cuff is detected. The separation means for separating the Korotkoff sound and the pulse sound detected by the sensing means and the separated sounds are simultaneously output. Means to identify the husband as a Korotkoff sound in the event of an outbreak, or by using a collection prepared separately from the blood cuff. The cuff band is formed by storing the sound force cuff together with the blood cuff in the outer bag, and the sensing means is arranged outside the cuff band, and a communication pipe is provided between the cuff band and the sound collection cuff. The problem of achieving the above object by providing communication and by interposing a flexible sheet between the blood cuff and the sound collecting cuff. It solves the point.
以下、 この発明の実施例を図面に基いて説明する と 、 この発明の血圧測定器の概略の構成は第 2 図の図示の よ う に カ フ帯 1 は、 阻血用 カ フ 2 と は別個に用意 した集音 用カ フ 3 を阻血用力 フ 2 と共に外袋に収納 して構成され、 阻血用 カ フ 2 は、 ゴ ム チ ュ ー ブ 9 を通 して自動可減圧装 置 4 に接続されてお ]? 、 集音用カ フ 3 はゴ ム チ ュ ^" ブ 10 を通 して力 フ帯 1 外のマ イ ク ロ ホ ン セ ン サ ^" 5 に接続さ れる。 このマ イ ク ロ ホ ン セ ン サ ー 5 は集音用カ フ 3 内の 気圧の変動す ¾わち第 1 図示の よ う な脈音（ィ）と コ ロ ト コ フ音（口）を電気信号に変換 して認識判別回路 11に伝える。 前記の 自動加減圧装置 4 は加圧ポ ン プ と 速排気弁およ び緩速排気弁で構成されてお り 、 ま た この自動加減圧装 置 4 に連結された血圧値記憶表示部 12は認識判別回路 11 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The schematic configuration of the blood pressure measuring device of the present invention is such that the cuff band 1 is separate from the blood cuff 2 as shown in FIG. The cuff 3 for sound collection prepared in the above is stored in an outer bag together with the cuff 2 for blood ischemia, and the cuff 2 for blood cuff is connected to the automatic decompression device 4 through the rubber tube 9. Then, the sound-collecting cuff 3 is connected to a micro-phone sensor ^ "5 outside the power band 1 through a rubber tube 10". This microphone sensor 5 changes the atmospheric pressure in the sound collecting cuff 3, that is, the pulse sound (a) and the Korotkoff sound (mouth) as shown in FIG. Is converted into an electric signal and transmitted to the recognition determination circuit 11. The automatic pressurizing / depressurizing device 4 is composed of a pressurizing pump, a quick exhaust valve, and a slow exhausting valve, and a blood pressure value storage / display unit 12 connected to the automatic pressurizing / depressurizing device 4. Is a recognition discrimination circuit 11
C.V.PI か らの指令信号に よ り 、 その時点の圧力を記憶 し表示す る装置で、 圧力変換器、 A 変換器、 数字表示管 ¾ どで 構成されている。 CVPI This is a device that stores and displays the pressure at that time in response to a command signal from it, and is composed of a pressure transducer, an A transducer, and a numeric display tube.
第 3 図は、 認識判別回铬 11 の具体例を示 し、 集音用力 フ 3 内の気圧の変動を感知するマ イ ク 口 ホ ン セ ン サ ー 5 の出力は第 3 図 ^に示すよ う に脈音 と コ ロ ト コ フ音の重 畳された も のであ り 、 この出力を高域通過フ ィ ル タ 13 と 低域通過フ イ ノレ タ I4 を通す こ と に脈音か ら図示 の よ う に コ ロ ト コ フ音を分離する。 一方、 電圧比較器 は脈音 を検知 して脈音に同期 したパ ス信号、 図示 Wを発生し 電圧比較器 ieはコ ロ ト コ フ 音を検知 してコ ロ ト コ フ音検 知パ ス 、 図示（ト）を発生する。 この双方のパ ゾレ ス が同時 に発生 した時、 これを コ ロ ト コ フ音 と して認識 し、 パ ル ス成形回路 17で検出パ ス 、 図示 ^を発生する。 コ ロ ト コ フ音の周波数成分は最高血圧時は、 周波数の高い成分 が多 く 最低血圧時には この成分がな く な る。 この現象か ら最低血圧値 ¾検出する場合、 最高血圧値検出時よ D高 めの高域通過フ ィ ル タ ーを用いれば、 正確 ¾測定が行な える。 電圧比較器 18 、 フ リ ッ プ フ ロ ッ プ お 、 リ レ ー 20は この切替回路を構成するために備え られている も のであ る 0 FIG. 3 shows a specific example of the recognition discrimination circuit 11, and FIG. 3 ^ shows the output of the microphone mouth sensor 5 which senses fluctuations in the atmospheric pressure in the sound collecting force 3. Ri heavy tatami is Nodea was also of by cormorants to Myakuon and co-collected by filtration co-off sound, Myakuon this output and this through a high-pass full Note1 13 a low-pass off Lee Norre data I 4 Then, the Korotkoff sound is separated as shown in the figure. On the other hand, the voltage comparator detects a pulse sound and generates a pass signal synchronized with the pulse sound, and W shown in the figure. The voltage comparator ie detects the Krotkoff sound and detects the Krotkoff sound. , Generate the figure (g). When both of these pulses occur at the same time, they are recognized as a Korotkoff sound, and the pulse forming circuit 17 generates a detection path, as shown in FIG. The frequency component of the Korotkoff sound has many high-frequency components during systolic blood pressure and disappears during diastolic blood pressure. When detecting diastolic blood pressure ら from this phenomenon, accurate ¾ measurement can be performed by using a high-pass filter that is D higher than when detecting systolic blood pressure. The voltage comparator 18, flip-flop, and relay 20 are provided to configure this switching circuit.
この発明の血圧測定器は上記の よ う に コ ロ ト コ フ音 と 同時に脈音 も検出する も のであ り 、 そのために従来は阻 血用 と集音用を兼ねていた力 フ を第 4 図に示すよ う に分 離 して、 阻血用 カ フ 2 と集音用カ フ 3 を別体に し、 かつ ' 集音用 カ フ 3 を阻血用カ フ 2 と連通させずに独立 した密 封構造に して、 脈音の よ う な低周波の気圧変動も マ イ ク 口 ホ ン セ ン サ ー （5)によ 検出でき る よ う に したのであ る。 As described above, the blood pressure measuring device of the present invention detects a pulse sound simultaneously with a Korotkoff sound, and therefore, a force probe which has conventionally been used for blood ischemia and sound collection is used as a fourth signal. Separated as shown in the figure, separate the blood cuff 2 and the sound collecting cuff 3 from each other. The sound collection cuff 3 is not communicated with the blood cuff 2 and is formed as an independent hermetically sealed structure to prevent low-frequency pressure fluctuations such as pulse sounds from the microphone mouth sensor (5). ) So that it can be detected.
こ の発明のカ フ にお ては、 阻血用力 フ 2 と集音用力 フ 3 と の間には布、 軟質塩ビ等の可撓性シ ト 6 が介在 されてお 、 その両面を接着剤で両カ フ 2 ， 3 に阽着さ れて る。 こ の シ ー ト . 6 に よ ]9集音用カ フ 3 の集音膜 3' と反対側の膜 3'に剛性を与えて、 脈音の よ う な低周波の この面 3 "における吸収を防止 し検出感度を向上させる も のであ 、 そ して阻血カ フ （2)厠か らの雑音を防止 し得る の であ る。 また膜 3 か ら複数個の突起 21 を設けて一定の 厚みを保持する よ う にな っ ている。 集音 カ フ 3 は可撓性 チ ュ ^" ブ 10 の先端に取付け られたマ イ ク ロ ホ ン セ ン サ ー 5 を含めて密封構造と な ってお .り 、 集音カ フ 3, とマ イ ク 口 ホ ン セ ン サ ー 5 との関係が丁度聴診器の集音部と耳当 部と の関係に相当 している。 ま たマ イ ク ロ ホ ン セ ン サ 一 5 を集音カ フ 3 内に設けずに可撓性チ ュ ー ブ 10 に よ ！） カ フ帯 1 外に延出 してその先端に設ける こ と に よ ]) 、 チ ユ ー ブな 0)の長さを適当に選んで気柱の長さを コ 口 ドコ フ 音に共振 し易 よ う に し検出感度を向上する こ とができ、 かつ集音カ フ 3 内にセ ン サ ー 5 を配置 した場合にセ ン サ 一 5 と動脈との位置ずれに よ 感度が大巾に変動する と う 従来よ の問題点を解消 し得たのであ る。 In the cuff of the present invention, a flexible sheet 6 such as cloth, soft PVC, or the like is interposed between the blood-absorbing force 2 and the sound-collecting force 3, and both surfaces thereof are bonded with an adhesive. Both cuffs 2 and 3 are attached. This sheet. 6] 9 The sound collecting membrane 3 'of the sound collecting cuff 3 and the membrane 3' opposite to the sound collecting membrane 3 'are given stiffness so that a low-frequency sound such as a pulse sound is generated on this surface 3 ". It prevents absorption and improves detection sensitivity, and can prevent noise from the blood cuff (2) lav. The sound-collecting cuff 3 has a sealed structure including the micro-phone sensor 5 attached to the tip of the flexible tube 10. Thus, the relationship between the sound collecting cuff 3, and the microphone mouth phone sensor 5 corresponds to the relationship between the sound collecting part of the stethoscope and the earpiece. Also, the micro tube sensor 5 is not provided in the sound collecting cuff 3 but the flexible tube 10! ) It extends outside the cuff band 1 and is provided at the tip of the cuff band.]), The length of the air column is appropriately selected and the length of the air column is resonated with the co-dock sound. In addition, the detection sensitivity can be improved to facilitate the detection, and when the sensor 5 is disposed in the sound collecting cuff 3, the sensitivity is large due to the displacement between the sensor 1 and the artery. Thus, the conventional problem of fluctuation in width could be solved.
阻血用 力 フ 2 の寸法は一般に 2 3 0 X 1 3 0 が適当と さ れているが、 本発明に よ る血圧計の場合の集音 カ フ 3 は The dimensions of the blood flow cuff 2 are generally considered to be 230 × 130, but the sound-collecting cuff 3 in the case of the sphygmomanometer according to the present invention is
： .'hi 脈音を検出する必要性も考慮するな らば次の範囲が適当 る。 : .'Hi The following range is appropriate if the need to detect pulse sounds is also taken into account.
集音用力 フ の長さ ： 1 1 5 〜 23 0 Power for sound collection Length: 1 15 to 230
〃 の Φ ： 1 7 〜 40 m Φ: 17 ~ 40m
すなわち、 長さ にっ^ては、 標準的 上腕の太さが男性In other words, the length is standard male upper arm thickness
26 0 、 女性 24 9丽と報告されてお 、 したカ つ て 1 1 5顧 あれば腕の約 1 /3を覆 う こ と にな るので、 動脈上か らはず れるおそれがな く 、 ま た 23 0願を越える と 、 巻きつ,け 時 集音カ フ が重な ]? あ う 場合が生 じて正確な コ，口 ト コ フ音 を とれな く な るおそれがある。 また巾については、 17 概 以下と な る と コ ロ ト コ フ音 レ べ ノレが脈音 レ ベ に較べて 小さ く な ]? 、 脈音 と の分離が難 しく な ]? 、 40職 を越える と 、 阻血用 カ フ 2 の機能を損 う おそれがあるか らであ 尚第 6 図は両カ フ 2 ， 3 とそれぞれに連結されるチ ュ ^" ブ 9 ， 10 と の結合管 7 を示すも ので、 成形品又は金属 よ な る 2 本のパ ィ プ 22 , 23を鍔 8 で連結した構造に ¾ つ てお り 、 この鍔 8 がカ フ帯 1 の外袋と のス ト ッ パを兼 ね るのであ る。 It was reported that there were 260 women and 249 women, and if they were to take care of them, they would cover about one- third of their arms, so they would not fall out of the arteries. when it exceeds or 2 3 0 gun, winding One, there is only time the sound collecting mosquitoes off heavy Do]? Oh cormorants case is raw Ji and precise co-mouth door co-off sound Torena rather than the Ruosore. In addition, if the width is less than about 17, the level of the Korotokofu sound will be smaller than that of the pulse sound, and it will be difficult to separate it from the pulse sound. If it exceeds, the function of the cuff 2 for blood ischemia may be impaired. FIG. 6 shows the connecting pipe 7 between the two cuffs 2 and 3 and the tubes 9 and 10 respectively connected thereto. In this structure, two pipes 22 and 23 made of molded product or metal are connected by a flange 8, and this flange 8 is connected to the outer bag of the cuff band 1. It also serves as the upper part.
図面の簡単な説明 BRIEF DESCRIPTION OF THE FIGURES
図面は、 この発明の血圧測定器の実施例を示 し、 第 1 図は、 従来例の説明図を も兼ねた動作説明図、 第 2 図は 電気回路部分を説明する ブロ ッ ク 図、 第 3 図は認識判別 回路の要部の具体回路図、 第 4 図はカ フ帯の斜視図、 第 5 図（a) (b)は第 4 図の横断面図およ び縦断面図 、 第 6 図は 結合管の斜視図であ る BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the blood pressure measuring device of the present invention, FIG. 1 is an operation explanatory diagram also serving as an explanatory diagram of a conventional example, FIG. 2 is a block diagram for explaining an electric circuit portion, and FIG. 3 is a specific circuit diagram of the main part of the recognition discrimination circuit. FIG. 4 is a perspective view of the cuff band. FIGS. 5 (a) and 5 (b) are cross-sectional and vertical cross-sectional views of FIG. 6 Figure is It is a perspective view of a coupling pipe.
oypi oypi
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6912478A JPS54160085A (en) | 1978-06-07 | 1978-06-07 | Tonometer |
| JP78/69124 | 1978-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1980000005A1 true WO1980000005A1 (en) | 1980-01-10 |
Family
ID=13393573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1979/000143 WO1980000005A1 (en) | 1978-06-07 | 1979-06-07 | Blood pressure measurement system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS54160085A (en) |
| WO (1) | WO1980000005A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003009755A3 (en) * | 2001-07-27 | 2003-05-30 | Terumo Corp | Cuff apparatus and sphygmomanometer comprising the same |
| CN116171128A (en) * | 2020-11-04 | 2023-05-26 | 欧姆龙健康医疗事业株式会社 | Blood pressure measurement cuff and sphygmomanometer |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4819594B2 (en) * | 2006-06-27 | 2011-11-24 | テルモ株式会社 | Blood pressure measurement cuff, blood pressure measurement device, and blood pressure measurement method |
| JP4882631B2 (en) * | 2006-09-25 | 2012-02-22 | ソニー株式会社 | Solid-state imaging device and imaging device |
| JP2011200610A (en) * | 2010-03-26 | 2011-10-13 | Terumo Corp | Electronic sphygmomanometer |
| JP5600021B2 (en) * | 2010-03-26 | 2014-10-01 | テルモ株式会社 | Electronic blood pressure monitor |
| JP5600023B2 (en) * | 2010-03-26 | 2014-10-01 | テルモ株式会社 | Electronic blood pressure monitor |
| JP5536597B2 (en) * | 2010-09-15 | 2014-07-02 | テルモ株式会社 | Sphygmomanometer |
| JP7527837B2 (en) * | 2020-05-11 | 2024-08-05 | 株式会社エー・アンド・デイ | Automatic blood pressure measuring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120628Y1 (en) * | 1970-08-18 | 1976-05-29 | ||
| JPS5220944Y2 (en) * | 1971-10-21 | 1977-05-13 | ||
| JPS5222868Y2 (en) * | 1971-10-22 | 1977-05-25 | ||
| DE1940575B2 (en) * | 1969-08-08 | 1978-02-16 | Elag Inhaber Johann Klein, 5000 Köln | Blood pressure measuring instrument with sound transducer - has intermediate sound transmission chamber for improved selectivity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120628U (en) * | 1974-08-01 | 1976-02-16 | ||
| JPS5220944U (en) * | 1975-07-31 | 1977-02-15 |
-
1978
- 1978-06-07 JP JP6912478A patent/JPS54160085A/en active Pending
-
1979
- 1979-06-07 WO PCT/JP1979/000143 patent/WO1980000005A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1940575B2 (en) * | 1969-08-08 | 1978-02-16 | Elag Inhaber Johann Klein, 5000 Köln | Blood pressure measuring instrument with sound transducer - has intermediate sound transmission chamber for improved selectivity |
| JPS5120628Y1 (en) * | 1970-08-18 | 1976-05-29 | ||
| JPS5220944Y2 (en) * | 1971-10-21 | 1977-05-13 | ||
| JPS5222868Y2 (en) * | 1971-10-22 | 1977-05-25 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003009755A3 (en) * | 2001-07-27 | 2003-05-30 | Terumo Corp | Cuff apparatus and sphygmomanometer comprising the same |
| US7354403B2 (en) | 2001-07-27 | 2008-04-08 | Terumo Kabushiki Kaisha | Cuff apparatus and sphygmomanometer comprising the same |
| CN116171128A (en) * | 2020-11-04 | 2023-05-26 | 欧姆龙健康医疗事业株式会社 | Blood pressure measurement cuff and sphygmomanometer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54160085A (en) | 1979-12-18 |
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