JP5141679B2 - Cuff for blood pressure information measuring device and blood pressure information measuring device provided with the same - Google Patents

Cuff for blood pressure information measuring device and blood pressure information measuring device provided with the same Download PDF

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JP5141679B2
JP5141679B2 JP2009299153A JP2009299153A JP5141679B2 JP 5141679 B2 JP5141679 B2 JP 5141679B2 JP 2009299153 A JP2009299153 A JP 2009299153A JP 2009299153 A JP2009299153 A JP 2009299153A JP 5141679 B2 JP5141679 B2 JP 5141679B2
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JP2011136108A (en
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佳彦 佐野
孝英 田中
秀輝 吉田
知里 上坂
実 谷口
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Omron Healthcare Co Ltd
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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 pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • 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
    • 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 pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits

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Description

本発明は、血圧値等の血圧情報を測定する際に被測定部位に装着されて使用される血圧情報測定装置用カフ、およびこれを備えた血圧情報測定装置に関する。   The present invention relates to a cuff for a blood pressure information measurement device that is used by being attached to a measurement site when measuring blood pressure information such as a blood pressure value, and a blood pressure information measurement device including the same.

血圧情報測定装置は、被験者の血圧情報を取得する。血圧情報測定装置が取得する血圧情報には、収縮期血圧値（最高血圧値）、拡張期血圧値（最低血圧値）、平均血圧値、被験者の脈波、脈拍、ＡＩ（Augmentation Index）値等、循環器系の種々の情報などが含まれる。これらの血圧情報に基づき、心臓の負荷、または動脈硬さの変化などを把握することができる。血圧情報測定装置は、循環器系の疾患の早期発見、予防または治療などのために使用されている。   The blood pressure information measurement device acquires blood pressure information of the subject. The blood pressure information acquired by the blood pressure information measuring device includes systolic blood pressure value (maximum blood pressure value), diastolic blood pressure value (minimum blood pressure value), average blood pressure value, subject pulse wave, pulse, AI (Augmentation Index) value, etc. And various information on the circulatory system. Based on these blood pressure information, it is possible to grasp the load of the heart or changes in arterial stiffness. The blood pressure information measuring device is used for early detection, prevention or treatment of circulatory diseases.

一般に、血圧情報の測定には、血圧情報測定装置用カフ（以下、単にカフとも称する）が使用される。カフは、内腔を有する帯状の袋状カバー体を有し、生体（動脈）を圧迫するための流体袋を袋状カバー体の内部に内包している。カフは、上腕などの生体の一部に巻き付けられる。   In general, a blood pressure information measuring device cuff (hereinafter also simply referred to as a cuff) is used for measuring blood pressure information. The cuff has a belt-like bag-like cover body having a lumen, and encloses a fluid bag for pressing a living body (artery) inside the bag-like cover body. The cuff is wrapped around a part of the living body such as the upper arm.

収縮期血圧値または拡張期血圧値などの血圧値を測定するための血圧情報測定装置（以下、単に血圧計とも称する）においては、カフが生体の一部の体表面に巻き付けられる。カフに内包される流体袋に、気体や液体等の流体が注入または排出される。流体袋に流体が注入されることにより、流体袋は膨張する。流体袋から流体が排出されることにより、流体袋は収縮する。流体袋が膨張または収縮するときに発生する流体袋の内圧の変化が、動脈圧脈波または血圧値として取得される。   In a blood pressure information measurement device (hereinafter also simply referred to as a sphygmomanometer) for measuring a blood pressure value such as a systolic blood pressure value or a diastolic blood pressure value, a cuff is wound around a part of the body surface of the living body. A fluid such as gas or liquid is injected into or discharged from the fluid bag contained in the cuff. When the fluid is injected into the fluid bag, the fluid bag expands. As the fluid is discharged from the fluid bag, the fluid bag contracts. A change in the internal pressure of the fluid bag that occurs when the fluid bag expands or contracts is acquired as an arterial pressure pulse wave or a blood pressure value.

一般的に、非観血血圧測定法による血圧測定を行なう場合には、上腕にカフを巻き付けて、血液の流れを阻止するようにカフ内の空気圧を高め、動脈を圧迫する。このとき、空気袋と袋状カバー体その他の内包物との摩擦が生ずることによる締め付け具合の調節や、測定中にカフの締め付けを緩ませないこと、空気袋の中心位置を動脈の直上にあわせることが重要である。   In general, when blood pressure is measured by the noninvasive blood pressure measurement method, a cuff is wrapped around the upper arm, the air pressure in the cuff is increased so as to prevent blood flow, and the artery is compressed. At this time, adjust the tightening due to friction between the air bag and the bag-like cover body or other inclusions, do not loosen the cuff during measurement, and adjust the center position of the air bag to just above the artery. This is very important.

オシロメトリック法のように動脈の容量変化を空気袋で検出し、空気袋内の容量変化を圧力として変換することにより、駆動本体内部の圧力センサへ演算処理し血圧算出する血圧計としては、下記の特許文献１および２が挙げられる。   As the sphygmomanometer that detects the arterial volume change with an air bag as in the oscillometric method and converts the volume change in the air bag as pressure, the pressure sensor inside the drive body performs arithmetic processing to calculate blood pressure. Patent Documents 1 and 2 are listed.

ここで、近年では、日本人の体型の大型化や、海外での使用を考慮して、大型の体型を有する被験者でも血圧測定が可能なように、カフを大型化する研究が進められているが、血圧の測定時にノイズを含む血圧の圧力変化の発生が問題となってきている。   In recent years, studies have been conducted to increase the size of the cuff so that subjects with a large body shape can measure blood pressure in consideration of the increase in the body size of Japanese people and use overseas. However, the occurrence of changes in blood pressure including noise has become a problem when measuring blood pressure.

国際公開第０７／１４８６６１号パンフレットInternational Publication No. 07/148661 pamphlet 特開平０７−１２４１２７号公報JP 07-124127 A

この発明が解決しようとする課題は、血圧情報測定装置用カフを大型化した場合に、血圧の測定時にノイズを含む血圧の圧力変化が発生する点にある。したがって、この発明の目的は、血圧情報測定装置用カフを大型化した場合であっても、精度良く血圧の圧力変化を測定することが可能な血圧情報測定装置用カフおよびこれを備えた血圧情報測定装置を提供することにある。   The problem to be solved by the present invention is that, when the cuff for the blood pressure information measuring device is enlarged, a pressure change of the blood pressure including noise occurs when measuring the blood pressure. Accordingly, an object of the present invention is to provide a blood pressure information measuring device cuff capable of accurately measuring a change in blood pressure pressure even when the blood pressure information measuring device cuff is enlarged, and blood pressure information including the same. It is to provide a measuring device.

本発明に基づく血圧情報測定装置用カフは、被測定部位を圧迫するための流体袋と、上記流体袋を収容し、上記流体袋を被測定部位に装着するため、被測定部位に巻きつけられる帯状形態の袋状カバー体とを備え、上記袋状カバー体は、外布と内布を含み、上記袋状カバー体は、一方端側には上記流体袋を収容する流体袋収容領域を有し、他方端側には被測定部位に巻きつけられた状態において、上記流体袋収容領域に覆い被さる巻き付き領域を有し、上記巻き付き領域において、上記外布と上記内布との間には、上記外布と上記内布との間の摩擦を低減させる摩擦低減部材が設けられる。   A cuff for a blood pressure information measuring device according to the present invention is wrapped around a measurement site in order to accommodate a fluid bag for compressing the measurement site and the fluid bag and to attach the fluid bag to the measurement site. A bag-shaped cover body, and the bag-shaped cover body includes an outer cloth and an inner cloth, and the bag-shaped cover body has a fluid bag housing region for housing the fluid bag on one end side. In the state wrapped around the measurement site on the other end side, the fluid bag housing area has a winding area that covers the area, and in the winding area, between the outer cloth and the inner cloth, A friction reducing member for reducing friction between the outer cloth and the inner cloth is provided.

上記発明の他の形態に基づく血圧情報測定装置用カフは、上記摩擦低減部材は、上記外布と上記内布との間の摩擦係数に比較して、上記外布との摩擦係数が小さくなるシート状部材である。   In the cuff for a blood pressure information measuring device according to another aspect of the present invention, the friction reducing member has a smaller coefficient of friction with the outer cloth than the coefficient of friction between the outer cloth and the inner cloth. It is a sheet-like member.

上記発明の他の形態に基づく血圧情報測定装置用カフは、上記摩擦低減部材は、上記外布と上記内布との間の摩擦係数に比較して、上記内布との摩擦係数が小さくなるシート状部材である。   In the cuff for a blood pressure information measuring device according to another aspect of the present invention, the friction reducing member has a smaller coefficient of friction with the inner cloth than the coefficient of friction between the outer cloth and the inner cloth. It is a sheet-like member.

本発明に基づく血圧情報測定装置は、上記のいずれかに記載の血圧情報測定装置用カフと、上記流体袋を膨縮させる膨縮機構と、血圧情報を取得する血圧情報取得部とを備える。   A blood pressure information measurement device according to the present invention includes the blood pressure information measurement device cuff according to any one of the above, an expansion / contraction mechanism that expands / contracts the fluid bag, and a blood pressure information acquisition unit that acquires blood pressure information.

本発明によれば、血圧情報測定装置用カフを大型化した場合であっても、精度良く血圧の圧力変化を測定することが可能な血圧情報測定装置用カフおよびこれを備えた血圧情報測定装置を提供する。   ADVANTAGE OF THE INVENTION According to this invention, even when it is a case where the cuff for blood-pressure information measuring devices is enlarged, the cuff for blood-pressure information measuring devices which can measure the pressure change of a blood pressure accurately, and a blood-pressure information measuring device provided with the same I will provide a.

実施の形態における血圧計の全体構成を示す図である。It is a figure which shows the whole blood-pressure meter structure in embodiment. 実施の形態における血圧計の構成を示す機能ブロック図である。It is a functional block diagram which shows the structure of the blood pressure meter in embodiment. 実施の形態における血圧計の血圧測定処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the blood-pressure measurement process of the sphygmomanometer in embodiment. 血圧計用カフの課題を説明するための、時間と測定圧力との関係を示す図である。It is a figure which shows the relationship between time and measured pressure for demonstrating the subject of the cuff for blood pressure monitors. 血圧計用カフの課題を説明するための拡大断面図である。It is an expanded sectional view for demonstrating the subject of the cuff for blood pressure monitors. 実施の形態におけるカフの展開平面図である。It is an expansion | deployment top view of the cuff in embodiment. 図６中のＶＩＩ−ＶＩＩ線矢視断面図である。FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6.

本発明に基づいた実施の形態における血圧情報測定装置用カフおよびこれを備えた血圧情報測定装置について、以下、図面を参照しながら説明する。   A blood pressure information measuring device cuff and a blood pressure information measuring device including the same according to an embodiment of the present invention will be described below with reference to the drawings.

以下の実施の形態においては、血圧情報測定装置用カフの一例として、上腕に巻き付けられて使用される血圧計用カフについて説明する。血圧情報測定装置用カフを備えた血圧情報測定装置の一例として、上記血圧計用カフを用いて収縮期血圧値および拡張期血圧値等の血圧値を測定可能とした血圧計について説明する。   In the following embodiments, a sphygmomanometer cuff that is used by being wrapped around the upper arm will be described as an example of a cuff for a blood pressure information measurement device. As an example of a blood pressure information measuring device including a blood pressure information measuring device cuff, a blood pressure meter capable of measuring blood pressure values such as systolic blood pressure values and diastolic blood pressure values using the blood pressure meter cuff will be described.

以下の各実施の形態においては、個数、量などに言及する場合、特に記載がある場合を除き、本発明の範囲は必ずしもその個数、量などに限定されない。以下に説明する各実施の形態において、同一の部品、相当部品に対しては、同一の参照番号を付し、重複する説明は繰り返さない場合がある。   In the following embodiments, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. In each embodiment described below, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

まず、図１から図３を参照して、本実施の形態における血圧計１００について説明する。なお、図１は血圧計１００の全体構成を示す図、図２は血圧計１００の構成を示す機能ブロック図、図３は血圧計１００の血圧測定処理の流れを示すフローチャートである。   First, blood pressure monitor 100 in the present embodiment will be described with reference to FIGS. 1 to 3. 1 is a diagram showing the overall configuration of the sphygmomanometer 100, FIG. 2 is a functional block diagram showing the configuration of the sphygmomanometer 100, and FIG. 3 is a flowchart showing the flow of blood pressure measurement processing of the sphygmomanometer 100.

図１を参照して、血圧計１００は、装置本体１１０と、血圧計用カフ１５０とを有する。血圧計１００は、血圧計用カフ１５０が被験者の上腕に装着される上腕式血圧計である。   Referring to FIG. 1, sphygmomanometer 100 includes an apparatus main body 110 and a sphygmomanometer cuff 150. The sphygmomanometer 100 is an upper arm sphygmomanometer in which a sphygmomanometer cuff 150 is attached to the upper arm of a subject.

装置本体１１０と血圧計用カフ１５０とは、分離して設けられており、血圧測定時において、装置本体１１０は机などの載置面に載置されて使用される。装置本体１１０と血圧計用カフ１５０とは、血圧計用カフ１５０に設けられたエア接続口１４６に接続管１４０が接続される。   The apparatus main body 110 and the sphygmomanometer cuff 150 are provided separately, and the apparatus main body 110 is mounted on a mounting surface such as a desk and used during blood pressure measurement. The apparatus main body 110 and the sphygmomanometer cuff 150 are connected to a connection pipe 140 at an air connection port 146 provided in the sphygmomanometer cuff 150.

装置本体１１０には、表示部１２２および操作部１２４が設けられている。表示部１２２は、血圧値の測定結果や脈拍数の測定結果等を、数値やグラフなどを用いて視認可能に表示する。この表示部１２２としては、たとえば液晶パネル等が利用される。操作部１２４には、たとえば、電源ボタンや測定開始ボタン、血圧計用カフ１５０の使用者に関する情報を入力するための入力ボタンなどの各種ボタンが設けられている。   The apparatus main body 110 is provided with a display unit 122 and an operation unit 124. The display unit 122 displays the measurement result of the blood pressure value, the measurement result of the pulse rate, and the like so as to be visible using numerical values, graphs, and the like. As this display unit 122, for example, a liquid crystal panel or the like is used. The operation unit 124 is provided with various buttons such as a power button, a measurement start button, and an input button for inputting information related to the user of the sphygmomanometer cuff 150.

血圧計用カフ１５０は、帯形状の外観を有し、被験者の上腕の周囲に巻き付けられる。血圧計用カフ１５０は、上腕を圧迫するための空気袋１６１と、空気袋１６１を上腕に巻き付けて装着するための袋状カバー体１６６とを有する。空気袋１６１は、袋状カバー体１６６の内部に設けられた空間に収容されている。   The sphygmomanometer cuff 150 has a belt-like appearance and is wound around the upper arm of the subject. The sphygmomanometer cuff 150 includes an air bag 161 for compressing the upper arm, and a bag-like cover body 166 for wrapping the air bag 161 around the upper arm and attaching it. The air bag 161 is accommodated in a space provided inside the bag-like cover body 166.

図２は、図１中の血圧計の構成を示す機能ブロック図である。図１および図２を参照して、装置本体１１０の内部には、血圧計用カフ１５０に内包された空気袋１６１に空気を供給または排出するための血圧測定用エア系コンポーネント１３１が設けられている。   FIG. 2 is a functional block diagram showing the configuration of the sphygmomanometer in FIG. Referring to FIGS. 1 and 2, blood pressure measurement air system component 131 for supplying or discharging air to / from air bag 161 contained in sphygmomanometer cuff 150 is provided inside apparatus main body 110. Yes.

血圧測定用エア系コンポーネント１３１は、空気袋１６１内の圧力を検出する圧力検出手段である圧力センサ１３２と、空気袋１６１を膨縮させるための膨縮機構部１３３であるポンプ１３４および弁１３５とを有する。装置本体１１０の内部には、血圧測定用エア系コンポーネント１３１に関連して発振回路１３６、ポンプ駆動回路１３７および弁駆動回路１３８が設けられている。   The air system component 131 for blood pressure measurement includes a pressure sensor 132 that is a pressure detecting means for detecting the pressure in the air bag 161, a pump 134 and a valve 135 that are an expansion / contraction mechanism part 133 for expanding and contracting the air bag 161. Have An oscillation circuit 136, a pump drive circuit 137, and a valve drive circuit 138 are provided in the apparatus main body 110 in association with the blood pressure measurement air system component 131.

装置本体１１０には、各部を集中的に制御および監視するためのＣＰＵ（Central Processing Unit）１２１と、ＣＰＵ１２１に所定の動作をさせるプログラムや測定された血圧値などの各種情報を記憶するためのメモリ部１２３と、血圧測定結果を含む各種情報を表示するための表示部１２２と、測定のための各種指示を入力するために操作される操作部１２４とが設けられている。ＣＰＵ１２１は、血圧値を算出するための血圧値算出手段としても機能する。   The apparatus main body 110 has a CPU (Central Processing Unit) 121 for centrally controlling and monitoring each part, and a memory for storing various information such as a program for causing the CPU 121 to perform a predetermined operation and a measured blood pressure value. There are provided a unit 123, a display unit 122 for displaying various information including blood pressure measurement results, and an operation unit 124 operated to input various instructions for measurement. The CPU 121 also functions as blood pressure value calculation means for calculating blood pressure values.

圧力センサ１３２は、空気袋１６１内の圧力（以下、「カフ圧」という）を検出し、検出した圧力に応じた信号を発振回路１３６に出力する。ポンプ１３４は、空気袋１６１に空気を供給する。弁１３５は、空気袋１６１内の圧力を維持したり、空気袋１６１内の空気を排出したりする際に開閉する。発振回路１３６は、圧力センサ１３２の出力値に応じた発振周波数の信号をＣＰＵ１２１に出力する。ポンプ駆動回路１３７は、ポンプ１３４の駆動をＣＰＵ１２１から与えられる制御信号に基づいて制御する。弁駆動回路１３８は、弁１３５の開閉制御をＣＰＵ１２１から与えられる制御信号に基づいて行なう。   The pressure sensor 132 detects the pressure in the air bag 161 (hereinafter referred to as “cuff pressure”), and outputs a signal corresponding to the detected pressure to the oscillation circuit 136. The pump 134 supplies air to the air bag 161. The valve 135 opens and closes when maintaining the pressure in the air bag 161 or exhausting the air in the air bag 161. The oscillation circuit 136 outputs an oscillation frequency signal corresponding to the output value of the pressure sensor 132 to the CPU 121. The pump drive circuit 137 controls the drive of the pump 134 based on a control signal given from the CPU 121. The valve drive circuit 138 performs opening / closing control of the valve 135 based on a control signal given from the CPU 121.

次に、図３を参照して、血圧計１００における血圧測定処理の流れについて説明する。このフローチャートに従うプログラムは、図２において示したメモリ部１２３に予め記憶されており、ＣＰＵ１２１がメモリ部１２３からこのプログラムを読出して実行することにより、血圧測定処理が実施される。   Next, the flow of blood pressure measurement processing in the sphygmomanometer 100 will be described with reference to FIG. The program according to this flowchart is stored in advance in the memory unit 123 shown in FIG. 2, and the blood pressure measurement process is performed by the CPU 121 reading and executing the program from the memory unit 123.

図２および図３を参照して、被験者が血圧計１００の操作部１２４の操作ボタンを操作して電源をオンにすると血圧計１００の初期化がなされる（ステップＳ１）。次に、測定可能状態になると、ＣＰＵ１２１はポンプ１３４の駆動を開始し、空気袋１６１のカフ圧を徐々に上昇させる（ステップＳ２）。カフ圧を徐々に加圧する過程において、カフ圧が血圧測定のために必要な所定のレベルにまで達すると、ＣＰＵ１２１はポンプ１３４を停止し、次いで閉じていた弁１３５を徐々に開いて空気袋１６１の空気を徐々に排気し、カフ圧を徐々に減圧させ（ステップＳ３）、このカフ圧の微速減圧過程においてカフ圧の検出が行なわれる。   Referring to FIGS. 2 and 3, when the subject turns on the power by operating the operation button of operation unit 124 of sphygmomanometer 100, sphygmomanometer 100 is initialized (step S1). Next, when measurement is possible, the CPU 121 starts driving the pump 134 and gradually increases the cuff pressure of the air bag 161 (step S2). In the process of gradually increasing the cuff pressure, when the cuff pressure reaches a predetermined level necessary for blood pressure measurement, the CPU 121 stops the pump 134, and then gradually opens the closed valve 135 to open the air bag 161. The cuff pressure is gradually exhausted and the cuff pressure is gradually reduced (step S3), and the cuff pressure is detected in the slow depressurization process of the cuff pressure.

次に、ＣＰＵ１２１は公知の手順で収縮期血圧値（最高血圧値）および拡張期血圧値（最低血圧値）を算出する（ステップＳ４）。具体的には、カフ圧が徐々に減圧する過程において、ＣＰＵ１２１は発振回路１３６から得られる発振周波数に基づき脈波情報を抽出する。そして、抽出された脈波情報により血圧値を算出する。ステップＳ４において血圧値が算出されると、算出された血圧値を表示部１２２に表示する（ステップＳ５）。   Next, the CPU 121 calculates a systolic blood pressure value (maximum blood pressure value) and a diastolic blood pressure value (minimum blood pressure value) by a known procedure (step S4). Specifically, in the process of gradually reducing the cuff pressure, the CPU 121 extracts pulse wave information based on the oscillation frequency obtained from the oscillation circuit 136. Then, a blood pressure value is calculated from the extracted pulse wave information. When the blood pressure value is calculated in step S4, the calculated blood pressure value is displayed on the display unit 122 (step S5).

なお、以上において説明した測定方式は、空気袋の減圧時に脈波を検出して血圧値を算出するいわゆる減圧測定方式に基づいたものであるが、空気袋の加圧時に脈波を検出して血圧値を算出するいわゆる加圧測定方式を採用することも当然に可能である。   The measurement method described above is based on a so-called decompression measurement method that calculates a blood pressure value by detecting a pulse wave when the air bag is depressurized. It is naturally possible to adopt a so-called pressurization measurement method for calculating the blood pressure value.

ここで、発明者らが血圧計用カフ１５０を大型化する研究を進める中で、血圧の測定時にノイズを含む血圧の圧力変化の発生が問題となることを知見した。図４に示すように、上記のステップＳ４において説明した、収縮期血圧値（最高血圧値）の測定時においては、正常であればａ１のラインとなるべきところ、ｂ１に示すようにノイズを含む血圧値が測定された。同様に、拡張期血圧値（最低血圧値）の測定時においても、正常であればａ２のラインとなるべきところ、ｂ２に示すようにノイズを含む血圧値が測定された。   Here, as the inventors proceeded with research to increase the size of the sphygmomanometer cuff 150, it was found that the occurrence of a pressure change in blood pressure including noise becomes a problem during blood pressure measurement. As shown in FIG. 4, at the time of measuring the systolic blood pressure value (maximum blood pressure value) described in step S4 above, the line should be a1 if normal, but includes noise as indicated by b1. Blood pressure values were measured. Similarly, at the time of measurement of the diastolic blood pressure value (minimum blood pressure value), the blood pressure value including noise was measured as indicated by b2 where it should be the line a2 if normal.

そこで、これらのノイズの発生源が何処にあるかについて発明者らが鋭意研究した結果、通常であれば、ノイズの発生源として考えられるのは空気袋１６１の周辺であるにもかかわらず、ノイズの発生源が、空気袋１６１が設けられていない領域での袋状カバー体１６６においてノイズが発生していることを解明した。   Therefore, as a result of the inventors intensively studying where these noise sources are located, it is normal that the noise sources are considered to be noises even though they are around the air bag 161. It has been clarified that noise is generated in the bag-like cover body 166 in the region where the air bag 161 is not provided.

図５に示すように、袋状カバー体１６６は、被験者の上腕側に位置する内布１６６ｅと、外側に位置する外布１６６ｂとの二重構造を有し、被験者の上腕に装着される際には、外布１６６ｂの外面に設けられた面ファスナ１９２に内布１６６ｅの表面が係合することで、血圧計用カフ１５０が被験者の上腕に固定される。   As shown in FIG. 5, the bag-shaped cover body 166 has a double structure of an inner cloth 166e located on the upper arm side of the subject and an outer cloth 166b located on the outer side, and is attached to the upper arm of the subject. In other words, the surface of the inner cloth 166e is engaged with the hook-and-loop fastener 192 provided on the outer surface of the outer cloth 166b, whereby the sphygmomanometer cuff 150 is fixed to the upper arm of the subject.

収縮期血圧値（最高血圧値）の測定時および拡張期血圧値（最低血圧値）の測定時には、面ファスナ１９２と袋状カバー体１６６との間に大きな力が発生するが、面ファスナ１９２に直接係合する内布１６６ｅと面ファスナ１９２に直接係合しない外布１６６ｂとの間には異なる方向に力が作用するため、内布１６６ｅと外布１６６ｂとの摩擦力により、内布１６６ｅと外布１６６ｂとの間に間欠的な移動が生じることがわかった。これが、図４に示す、収縮期血圧値（最高血圧値）および拡張期血圧値（最低血圧値）の測定時におけるノイズの原因である。   When measuring the systolic blood pressure value (maximum blood pressure value) and when measuring the diastolic blood pressure value (minimum blood pressure value), a large force is generated between the hook-and-loop fastener 192 and the bag-like cover body 166. Since a force acts in a different direction between the directly engaging inner cloth 166e and the outer cloth 166b not directly engaging the surface fastener 192, the friction force between the inner cloth 166e and the outer cloth 166b causes the inner cloth 166e and It was found that intermittent movement occurred between the outer cloth 166b. This is the cause of noise when measuring the systolic blood pressure value (maximum blood pressure value) and the diastolic blood pressure value (minimum blood pressure value) shown in FIG.

このようなノイズの発生は、袋状カバー体１６６が長手方向に大型化されたことにより、内布１６６ｅと外布１６６ｂとを熱溶着する距離が長くなったために生じるものと考えられる。したがって、このノイズの低減には、内布１６６ｅと外布１６６ｂとの熱溶着箇所を増やすことが考えられる。   Such noise generation is considered to be caused by the fact that the bag-shaped cover body 166 is enlarged in the longitudinal direction and the distance for heat-welding the inner cloth 166e and the outer cloth 166b is increased. Therefore, to reduce this noise, it is conceivable to increase the number of heat-welded locations between the inner cloth 166e and the outer cloth 166b.

しかし、熱溶着箇所を増加させた場合には、血圧計用カフ１５０のデザインが大きく損なわれる問題が生じる。また、熱溶着時のエネルギの増加、熱溶着のための金型の複雑化により、製造コストの上昇を招くことが懸念される。   However, when the number of heat welding locations is increased, there arises a problem that the design of the sphygmomanometer cuff 150 is greatly impaired. Moreover, there is a concern that the manufacturing cost increases due to an increase in energy at the time of thermal welding and a complicated mold for thermal welding.

そこで、発明者らは、鋭意研究の結果、内布１６６ｅと外布１６６ｂとの熱溶着箇所を増やすことなく、内布１６６ｅと外布１６６ｂとの間の間欠的な移動を抑制するが可能な構成を備える血圧計用カフを完成させた。その構成を備える血圧計用カフ１５０を、以下図６および図７を参照して説明する。なお、図６および図７に示す血圧計用カフ１５０は展開した状態を示す図である。   Thus, as a result of earnest research, the inventors can suppress intermittent movement between the inner cloth 166e and the outer cloth 166b without increasing the number of heat-welded portions between the inner cloth 166e and the outer cloth 166b. A sphygmomanometer cuff with a configuration was completed. A sphygmomanometer cuff 150 having such a configuration will be described below with reference to FIGS. 6 and 7. The blood pressure monitor cuff 150 shown in FIGS. 6 and 7 is a diagram showing a developed state.

この血圧計用カフ１５０は、被験者の上腕を圧迫するための空気袋１６１と、この空気袋１６１を収容しながら被験者の上腕に空気袋１６１を装着するため、被験者の上腕に巻きつけられる帯状形態の袋状カバー体１６６とを備えている。   The sphygmomanometer cuff 150 has an air bag 161 for compressing the upper arm of the subject, and a belt-like form that is wound around the upper arm of the subject in order to attach the air bag 161 to the upper arm of the subject while accommodating the air bag 161. The bag-shaped cover body 166 is provided.

袋状カバー体１６６は、一方端側には空気袋１６１を収容する流体袋収容領域Ｒ１を有し、他方端側には被験者の上腕に巻きつけられた状態において、流体袋収容領域Ｒ１に覆い被さる巻き付き領域Ｒ２を有している。   The bag-like cover body 166 has a fluid bag housing region R1 for housing the air bag 161 on one end side, and covers the fluid bag housing region R1 on the other end side in a state of being wound around the upper arm of the subject. It has a winding region R2 to be covered.

袋状カバー体１６６は、流体袋収容領域Ｒ１において、第１外布１６６ａおよび第１内布１６６ｃを有し、巻き付き領域Ｒ２において、第２外布１６６ｂおよび第２内布１６６ｅを有している。   The bag-like cover body 166 has a first outer cloth 166a and a first inner cloth 166c in the fluid bag housing region R1, and has a second outer cloth 166b and a second inner cloth 166e in the winding region R2. .

第１外布１６６ａ、第２外布１６６ｂ、第１内布１６６ｃ、および第２内布１６６ｅには、好適にはポリアミド（ＰＡ）、ポリエステル等の合成繊維からなる布地によって形成されている。なお、第１内布１６６ｃ、および第２内布１６６ｅは、好適には伸縮性に優れた部材にて構成され、第１外布１６６ａ、第２外布１６６ｂは、好適には内布よりも伸縮性に乏しい部材にて構成される。   The first outer cloth 166a, the second outer cloth 166b, the first inner cloth 166c, and the second inner cloth 166e are preferably formed of a cloth made of synthetic fiber such as polyamide (PA) or polyester. The first inner cloth 166c and the second inner cloth 166e are preferably made of members having excellent stretchability, and the first outer cloth 166a and the second outer cloth 166b are preferably more than the inner cloth. Consists of members with poor stretchability.

第１外布１６６ａの外面には、袋状カバー体１６６の巻き付き領域Ｒ２が被験者の上腕に巻き付けられた状態において、巻き付き領域Ｒ２の第２内布１６６ｅが係合するための面ファスナ１９２が設けられている。   On the outer surface of the first outer cloth 166a, there is provided a surface fastener 192 for engaging the second inner cloth 166e in the winding region R2 in a state where the winding region R2 of the bag-like cover body 166 is wound around the upper arm of the subject. It has been.

袋状カバー体１６６の流体袋収容領域Ｒ１においては、第１内部シート１６６ｆ、カーラ１９１、第２内部シート１６６ｄ、および空気袋１６１が、第１外布１６６ａと第１内布１６６ｃとの間に挟みこまれるように収容されている。   In the fluid bag housing region R1 of the bag-shaped cover body 166, the first inner sheet 166f, the curler 191, the second inner sheet 166d, and the air bag 161 are interposed between the first outer cloth 166a and the first inner cloth 166c. It is housed so as to be sandwiched.

第１内部シート１６６ｆには、ポリエステル素材が用いられている。第２内部シート１６６ｄには、ポリ塩化ビニルフィルムが用いられている。   A polyester material is used for the first inner sheet 166f. A polyvinyl chloride film is used for the second inner sheet 166d.

カーラ１９１は、空気袋１６１を上腕に向けて付勢するための湾曲弾性板である。カーラ１９１を展開した状態においては帯形状を有する。カーラ１９１は、上腕にフィットするように、上腕の軸方向に延びる円筒形状に形成されており、環状に巻き回されることによって径方向に弾性変形可能に構成された可撓性の部材からなる。カーラ１９１は、十分な弾性力を発現するように、たとえばポリプロピレン（ＰＰ）等の樹脂部材にて形成されている。   The curler 191 is a curved elastic plate for urging the air bag 161 toward the upper arm. When the curler 191 is deployed, it has a band shape. The curler 191 is formed in a cylindrical shape extending in the axial direction of the upper arm so as to fit the upper arm, and is formed of a flexible member configured to be elastically deformable in the radial direction by being wound in an annular shape. . The curler 191 is formed of a resin member such as polypropylene (PP), for example, so as to exhibit a sufficient elastic force.

空気袋１６１を形成する樹脂シートの材質としては、伸縮性に富んだ材料が用いられ、樹脂シートの好適な材質としては、エチレン−酢酸ビニール共重合体（ＥＶＡ）、軟質塩化ビニル（ＰＶＣ）、ポリウレタン（ＰＵ）、ポリアミド（ＰＡ）、生ゴム等が挙げられる。   As the material of the resin sheet forming the air bag 161, a material rich in elasticity is used, and as a suitable material of the resin sheet, ethylene-vinyl acetate copolymer (EVA), soft vinyl chloride (PVC), Examples include polyurethane (PU), polyamide (PA), and raw rubber.

第１外布１６６ａ、第２外布１６６ｂ、第１内布１６６ｃ、第２内布１６６ｅ、第１内部シート１６６ｆ、および第２内部シート１６６ｄは、図７に示すＢの箇所において結合される。袋状カバー体１６６の周囲は、縁取り布を用いてバイアス編に縫製される。   The first outer cloth 166a, the second outer cloth 166b, the first inner cloth 166c, the second inner cloth 166e, the first inner sheet 166f, and the second inner sheet 166d are joined at a position B shown in FIG. The periphery of the bag-like cover body 166 is sewn into a bias knitting using an edge cloth.

また、巻き付き領域Ｒ２においては、第２外布１６６ｂと第２内布１６６ｅとの間に、摩擦低減部材として摩擦低減シート１７１が設けられている。   In the winding region R2, a friction reducing sheet 171 is provided as a friction reducing member between the second outer cloth 166b and the second inner cloth 166e.

摩擦低減シート１７１の機能としては、摩擦低減シート１７１を設けない場合の第２外布１６６ｂと第２内布１６６ｅとの間の摩擦係数をＦ１とした場合、第２外布１６６ｂと摩擦低減シート１７１との間の摩擦係数Ｆ２を、Ｆ１よりも小さくする（Ｆ１＞Ｆ２）、または、第２内布１６６ｅと摩擦低減シート１７１との間の摩擦係数Ｆ３を、Ｆ１よりも小さくする（Ｆ１＞Ｆ３）ものである。   The function of the friction reducing sheet 171 is that when the friction coefficient between the second outer cloth 166b and the second inner cloth 166e when the friction reducing sheet 171 is not provided is F1, the second outer cloth 166b and the friction reducing sheet. The friction coefficient F2 between the second inner cloth 166e and the friction reducing sheet 171 is made smaller than F1 (F1>). F3).

第２外布１６６ｂと摩擦低減シート１７１との間の摩擦係数Ｆ２、および第２内布１６６ｅと摩擦低減シート１７１との間の摩擦係数Ｆ３が、同時に摩擦低減シート１７１を設けない場合の第２外布１６６ｂと第２内布１６６ｅとの間の摩擦係数Ｆ１より小さくなってもかまわない。   The friction coefficient F2 between the second outer cloth 166b and the friction reduction sheet 171 and the friction coefficient F3 between the second inner cloth 166e and the friction reduction sheet 171 are the second when the friction reduction sheet 171 is not provided at the same time. The friction coefficient F1 between the outer cloth 166b and the second inner cloth 166e may be smaller.

摩擦低減シート１７１としては、繊維、不織布、フィルム等が用いられ、具体的な材料としては、ナイロン、ポリエステル、アクリル、ポリプロピレン、ポリ塩化ビニル、フッ素樹脂等が挙げられる。巻き付き領域Ｒ２においては、第２外布１６６ｂ、摩擦低減シート１７１、および第２内布１６６ｅは熱溶着により固定される。図６および図７中において、熱溶着箇所を、熱溶着部１６６ｈとして示す。   As the friction reducing sheet 171, fibers, non-woven fabrics, films and the like are used, and specific materials include nylon, polyester, acrylic, polypropylene, polyvinyl chloride, fluororesin and the like. In the winding region R2, the second outer cloth 166b, the friction reducing sheet 171 and the second inner cloth 166e are fixed by heat welding. In FIG. 6 and FIG. 7, the heat welding location is shown as a heat welding portion 166h.

（作用・効果）
このように、本実施の形態おける血圧計用カフ１５０およびこれを備えた血圧計１００によれば、袋状カバー体１６６の巻き付き領域Ｒ２において、第２外布１６６ｂと第２内布１６６ｅとの間の摩擦係数を、摩擦低減部材を介在させることにより低減させている。 (Action / Effect)
Thus, according to the sphygmomanometer cuff 150 and the sphygmomanometer 100 including the sphygmomanometer 150 according to the present embodiment, the second outer cloth 166b and the second inner cloth 166e are formed in the wrapping region R2 of the bag-like cover body 166. The friction coefficient is reduced by interposing a friction reducing member.

これにより、血圧計１００を用いた、縮期血圧値（最高血圧値）および拡張期血圧値（最低血圧値）の測定時における第２外布１６６ｂと第２内布１６６ｅとの間の間欠的な移動を抑制するが可能となる。   Accordingly, intermittent measurement between the second outer cloth 166b and the second inner cloth 166e at the time of measuring the systolic blood pressure value (maximum blood pressure value) and the diastolic blood pressure value (minimum blood pressure value) using the blood pressure monitor 100. Can be suppressed.

その結果、血圧値の測定時におけるノイズの発生が抑制され、血圧計用カフを大型化した場合であっても、精度良く血圧の圧力変化を測定することが可能な血圧計用カフおよびこれを備えた血圧計を提供することが可能となる。   As a result, the generation of noise during measurement of blood pressure values is suppressed, and even when the sphygmomanometer cuff is enlarged, the sphygmomanometer cuff capable of accurately measuring a change in blood pressure is provided. It is possible to provide a blood pressure monitor provided.

また、従来と同様の製造工程により血圧計用カフを完成させることが可能であるため、熱溶着時のエネルギの増加、熱溶着のための金型の複雑化により、製造コストの上昇を招くこともない。   Moreover, since the cuff for a blood pressure monitor can be completed by the same manufacturing process as the conventional one, the increase in energy at the time of heat welding and the complexity of the mold for heat welding may cause an increase in manufacturing cost. Nor.

なお、摩擦低減部材としてシート状部材を採用した場合について説明しているが、シート状部材に限らず、第２外布１６６ｂと第２内布１６６ｅとの間の摩擦係数を小さくする目的から、オイル、粉末を配置する構成を採用することも可能である。   In addition, although the case where a sheet-like member is adopted as the friction reducing member is described, not only the sheet-like member but also for the purpose of reducing the friction coefficient between the second outer cloth 166b and the second inner cloth 166e, It is also possible to employ a configuration in which oil and powder are arranged.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

１００ 血圧計、１１０ 装置本体、１２１ ＣＰＵ（Central Processing Unit）、１２２ 表示部、１２３ メモリ部、１２４ 操作部、１３１ 血圧測定用エア系コンポーネント、１３２ 圧力センサ、１３３ 膨縮機構部、１３４ ポンプ、１３５ 弁、１３６ 発振回路、１３７ ポンプ駆動回路、１３８ 弁駆動回路、１４０ 接続管、１４６ エア接続口、１５０ 血圧計用カフ、１６１ 空気袋、１６６ 袋状カバー体、１６６ 袋状カバー体、１６６ａ 第１外布、１６６ｂ 第２外布、１６６ｃ 第１内布、１６６ｄ 第２内部シート、１６６ｅ 第２内布、１６６ｆ 第１内部シート、１７１ 摩擦低減シート、１９２ 面ファスナ、１９１ カーラ、Ｒ１ 流体袋収容領域、Ｒ２ 巻き付き領域。   DESCRIPTION OF SYMBOLS 100 Blood pressure monitor, 110 Apparatus main body, 121 CPU (Central Processing Unit), 122 Display part, 123 Memory part, 124 Operation part, 131 Blood pressure measurement air system component, 132 Pressure sensor, 133 Expansion / contraction mechanism part, 134 Pump, 135 Valve, 136 Oscillator circuit, 137 Pump drive circuit, 138 Valve drive circuit, 140 Connection pipe, 146 Air connection port, 150 Sphygmomanometer cuff, 161 Air bag, 166 Bag-shaped cover body, 166 Bag-shaped cover body, 166a 1st Outer cloth, 166b second outer cloth, 166c first inner cloth, 166d second inner sheet, 166e second inner cloth, 166f first inner sheet, 171 friction reducing sheet, 192 surface fastener, 191 curler, R1 fluid bag housing area , R2 Wound area.

Claims (4)

被測定部位を圧迫するための流体袋と、
前記流体袋を収容し、前記流体袋を被測定部位に装着するため、被測定部位に巻きつけられる帯状形態の袋状カバー体と、を備え、
前記袋状カバー体は、外布と内布とを含み、
前記袋状カバー体は、一方端側には前記流体袋を収容する流体袋収容領域を有し、他方端側には被測定部位に巻きつけられた状態において、前記流体袋収容領域に覆い被さる巻き付き領域を有し、
前記巻き付き領域において、前記外布と前記内布との間には、前記外布と前記内布との間の摩擦を低減させる摩擦低減部材が設けられる、血圧情報測定装置用カフ。 A fluid bag for compressing the measurement site;
A bag-shaped cover body having a belt-like shape wound around the measurement site in order to accommodate the fluid bag and attach the fluid bag to the measurement site;
The bag-like cover body includes an outer cloth and an inner cloth,
The bag-shaped cover body has a fluid bag storage region for storing the fluid bag on one end side, and covers the fluid bag storage region on the other end side in a state of being wound around a measurement site. Has a winding area,
A cuff for a blood pressure information measurement device, wherein a friction reducing member that reduces friction between the outer cloth and the inner cloth is provided between the outer cloth and the inner cloth in the winding region. 前記摩擦低減部材は、前記外布と前記内布との間の摩擦係数に比較して、前記外布との摩擦係数が小さくなるシート状部材である、請求項１に記載の血圧情報測定装置用カフ。   The blood pressure information measuring device according to claim 1, wherein the friction reducing member is a sheet-like member having a smaller coefficient of friction with the outer cloth than a coefficient of friction between the outer cloth and the inner cloth. For cuff. 前記摩擦低減部材は、前記外布と前記内布との間の摩擦係数に比較して、前記内布との摩擦係数が小さくなるシート状部材である、請求項１に記載の血圧情報測定装置用カフ。   2. The blood pressure information measurement device according to claim 1, wherein the friction reducing member is a sheet-like member in which a friction coefficient with the inner cloth is smaller than a friction coefficient between the outer cloth and the inner cloth. For cuff. 請求項１から３のいずれかに記載の血圧情報測定装置用カフと、
前記流体袋を膨縮させる膨縮機構と、
血圧情報を取得する血圧情報取得部と、を備えた、
血圧情報測定装置。 A cuff for a blood pressure information measuring device according to any one of claims 1 to 3,
An expansion / contraction mechanism for expanding and contracting the fluid bag;
A blood pressure information acquisition unit for acquiring blood pressure information,
Blood pressure information measuring device.
JP2009299153A 2009-12-29 2009-12-29 Cuff for blood pressure information measuring device and blood pressure information measuring device provided with the same Active JP5141679B2 (en)

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