JP2002191567A - Cuff for sphygmomanometer - Google Patents
Cuff for sphygmomanometerInfo
- Publication number
- JP2002191567A JP2002191567A JP2000393680A JP2000393680A JP2002191567A JP 2002191567 A JP2002191567 A JP 2002191567A JP 2000393680 A JP2000393680 A JP 2000393680A JP 2000393680 A JP2000393680 A JP 2000393680A JP 2002191567 A JP2002191567 A JP 2002191567A
- Authority
- JP
- Japan
- Prior art keywords
- cuff
- wrist
- radial
- forearm
- longitudinal direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、血圧、脈波、生体
情報などを手首で測定するのに適した血圧計用カフに関
し、詳しくは主に手首を圧迫するカフの構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cuff for a sphygmomanometer suitable for measuring blood pressure, pulse wave, biological information, and the like on a wrist, and more particularly to a structure of a cuff for compressing a wrist.
【０００２】[0002]
【従来の技術】一般に、カフによる圧迫法を用いた血圧
計は、カフを動脈が完全に閉塞するまで加圧し、その後
徐々に減圧してカフの圧迫力に重畳した動脈の脈波信号
を捉え、その振幅変化を基に最高、最低、および平均血
圧を判定する。圧迫する部位は上腕、手首などが用いら
れ、自動的に血圧を測定する電子血圧計が知られてい
る。手首には橈骨、尺骨、腱、筋肉および上腕動脈が分
岐した橈骨動脈と尺骨動脈と呼ばれる２本の太い動脈が
走行している。カフによる圧迫法を用いた手首血圧計で
は、カフを用いてこの２本の動脈を同時に阻血し、減圧
することにより捉えた脈波信号から血圧を判定してい
る。2. Description of the Related Art Generally, a sphygmomanometer using a cuff compression method captures a pulse wave signal of an artery superimposed on the cuff compression force by pressurizing the cuff until the artery is completely occluded and then gradually reducing the pressure. , The maximum, minimum, and mean blood pressure are determined based on the amplitude change. An electronic sphygmomanometer that automatically measures blood pressure using an upper arm, a wrist, or the like as a part to be compressed is known. On the wrist, two thick arteries called a radial artery and an ulnar artery, where the radius, ulna, tendon, muscle and brachial artery branch, run. In a wrist sphygmomanometer using a compression method using a cuff, blood pressure is determined from a pulse wave signal captured by simultaneously blocking blood pressure in the two arteries using a cuff and reducing the pressure.
【０００３】しかしながら、２本の動脈を同時に阻血す
るためには大きなカフの圧迫力が必要であるため、使用
者にとっては大きな圧迫感がある。また一般に橈骨動脈
よりも尺骨動脈の方が手首表面から深い位置にあり、阻
血後のカフ減圧時に尺骨動脈の脈波信号が橈骨動脈の脈
波信号より先に出現することから血圧判定に誤差を生じ
やすい。[0003] However, since a large cuff pressure is required to simultaneously block two arteries, the user feels a great pressure. In general, the ulnar artery is deeper than the radial artery from the wrist surface, and the pulse wave signal of the ulnar artery appears earlier than the pulse wave signal of the radial artery when the cuff is decompressed after ischemia. Easy to occur.
【０００４】したがって従来から、橈骨動脈、あるいは
尺骨動脈のみを阻血し、血圧を判定する方法が試みら
れ、特許出願されている（例えば特願平１１−１６６０
２３号）。このような従来技術としては、例えば図７〜
９に示すようにカフ１を手首周方向に、手首手掌側の腱
９が配置されている硬い組織エリア５０から橈骨茎状突
起部７に至るまで巻回すると共に、尺骨動脈４までは巻
回しないようにし、この状態でカフ１にて手首２を圧迫
することにより橈骨動脈３のみを圧迫して、血圧を測定
するものがある。Therefore, a method of determining blood pressure by blocking only the radial artery or the ulnar artery has been attempted, and a patent application has been filed (for example, Japanese Patent Application No. 11-1660).
No. 23). As such prior art, for example, FIGS.
As shown in FIG. 9, the cuff 1 is wound in the circumferential direction of the wrist from the hard tissue area 50 where the tendon 9 on the palm side of the wrist is arranged to the radial pedicle 7, and is wound up to the ulnar artery 4. In some cases, the blood pressure is measured by pressing only the radial artery 3 by pressing the wrist 2 with the cuff 1 in this state.
【０００５】このような従来技術においては、手首２に
巻回されたカフ１を例えば２６．７ｋＰａ（２００ｍｍ
Ｈｇ）まで加圧して手首を圧迫することにより橈骨動脈
３を阻血した後、例えば０．４ｋＰａ／ｓ（３ｍｍＨｇ
／ｓ）の降下速度で加圧力を降下させながら、脈圧成分
を検出し、図１３に示すようなカフ圧−脈圧曲線から血
圧値を推定するものである。[0005] In such a conventional technique, the cuff 1 wound around the wrist 2 is, for example, 26.7 kPa (200 mm).
Hg) to press the wrist to insulate the radial artery 3, for example, 0.4 kPa / s (3 mmHg).
The pulse pressure component is detected while lowering the pressing force at the falling speed of (/ s), and the blood pressure value is estimated from the cuff pressure-pulse pressure curve as shown in FIG.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記のような
従来技術においては、図１２に示すように、橈骨茎状突
起部７の中央部７ａは手首２の皮膚の表面側に向けて隆
起しているので、図５に示すグラフのＰ2のように、カ
フ１にて圧迫されている領域における橈骨動脈３に働く
圧迫力は、橈骨茎状突起部７の中央部７ａと手首２の表
面との間に配置さされている部分では、その上流側及び
下流側よりも圧迫力が高くなってしまう。このため、カ
フ１にて圧迫されている領域では、橈骨動脈３は橈骨茎
状突起部７の中央部７ａと手首２の表面との間で阻血が
されたしても、それより上流側の圧迫力が低い部分に血
流が流れ込んでしまうおそれがあり、また図７に示すよ
うに橈骨動脈３と尺骨動脈４とは手掌側において環状に
連結されているので、橈骨茎状突起部７の中央部７ａと
手首２の表面との間よりも下流側の圧迫力が低い部分に
も血流が逆流して流れ込んでしまうおそれがある。However, in the above-mentioned prior art, as shown in FIG. 12, the central portion 7a of the radial pedicle 7 protrudes toward the surface of the skin of the wrist 2. As shown in P 2 of the graph shown in FIG. 5, the compression force acting on the radial artery 3 in the region compressed by the cuff 1 is applied to the central portion 7 a of the radial pedicle 7 and the surface of the wrist 2. The compression force is higher in the portion disposed between the upstream side and the downstream side. For this reason, in the region compressed by the cuff 1, even if the radial artery 3 is blocked between the central portion 7a of the radial pedicle 7 and the surface of the wrist 2, the radial artery 3 is located on the upstream side thereof. Blood flow may flow into a portion where the compression force is low, and the radial artery 3 and the ulnar artery 4 are circularly connected on the palm side as shown in FIG. There is a possibility that the blood flow will flow backward and flow into a portion where the compression force is lower on the downstream side than between the central portion 7a and the surface of the wrist 2.
【０００７】このようにカフ１にて圧迫されている領域
において、橈骨動脈３に血流が流れ込んでしまうと、図
１３に示すようにカフ圧−脈圧曲線にノイズＮが重畳
し、血圧の測定精度が悪化する原因となってしまうもの
であった。When blood flows into the radial artery 3 in the region compressed by the cuff 1, noise N is superimposed on the cuff pressure-pulse pressure curve as shown in FIG. This causes the measurement accuracy to deteriorate.
【０００８】本発明は上記の点に鑑みて為されたもので
あり、手首を圧迫することにより橈骨動脈に圧迫力をか
けて血圧を測定するにあたり、カフが装着されて圧迫さ
れている領域において橈骨動脈に血流方向に沿って圧迫
力を均一な分布でかけることにより、橈骨動脈の血流を
阻血している場合における、橈骨動脈のカフにて圧迫さ
れている領域において、橈骨茎状突起部の中央部に対す
る上流側や下流側から血流が流れ込むことを防止して、
このような血流によるノイズの発生を抑制し、正確な血
圧、脈波等の測定を行なうことができる血圧計用カフを
提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in measuring a blood pressure by applying a compressive force to a radial artery by compressing a wrist, an area where a cuff is attached and compressed is used. By applying a compressive force to the radial artery along the blood flow direction with a uniform distribution, in the case where the blood flow of the radial artery is blocked, in the region compressed by the cuff of the radial artery, To prevent blood flow from flowing in from the upstream and downstream with respect to the central part of
An object of the present invention is to provide a cuff for a sphygmomanometer capable of suppressing occurrence of noise due to such a blood flow and performing accurate measurement of blood pressure, pulse wave, and the like.
【０００９】[0009]
【課題を解決するための手段】本発明の請求項１に係る
血圧計用カフは、手首周方向に巻回されて手首２を圧迫
する血圧計用カフ１において、カフ１の手首周方向の長
さは、手首手掌側の腱９が配置されている硬い組織エリ
ア５０を起点として橈骨５側に巻き付けたときに橈骨動
脈３を通り少なくとも橈骨茎状突起部７に至り且つ尺骨
動脈４には至らないような長さを有すると共に、カフ１
の前腕長手方向の長さは、少なくとも橈骨茎状突起部７
の略直上において橈骨動脈３を局所的に圧迫するための
長さを有し、カフ１を手首周方向に巻回させて圧迫させ
た際の、橈骨茎状突起部７の中央部７ａに対する前腕長
手方向の両端側でのカフ１から手首２表面への圧迫力
が、橈骨茎状突起部７の中央部７ａの略直上での圧迫力
よりも大きくなるように形成して成ることを特徴とする
ものである。According to a first aspect of the present invention, there is provided a sphygmomanometer cuff wound around a wrist and pressed against a wrist. The length passes through the radial artery 3 when wrapped around the radius 5 starting from the hard tissue area 50 where the tendon 9 on the palm side of the wrist is arranged, and reaches at least the radial pedicle 7 and the ulnar artery 4 It has a length that cannot be reached and has a cuff 1
The length of the forearm in the longitudinal direction is at least the radial pedicle 7
A forearm with respect to the central portion 7a of the radial pedicle 7 when the cuff 1 is wound in the circumferential direction of the wrist to compress the radius artery 3 almost directly above the radial artery 3 The compression force from the cuff 1 to the surface of the wrist 2 at both ends in the longitudinal direction is formed so as to be greater than the compression force substantially immediately above the central portion 7a of the radial stalk-shaped projection 7. Is what you do.
【００１０】また請求項２の発明は、請求項１におい
て、装着状態における、橈骨茎状突起部７の中央部７ａ
の略直上に配置される部分での、カフ１の手首２表面側
の面から手首２とは反対側の面の間の寸法が、橈骨茎状
突起部７の中央部７ａに対する前腕長手方向の両端側に
配置される部分よりも小さく形成されていることを特徴
とするものである。According to a second aspect of the present invention, in the first aspect, the central portion 7a of the radial pedicle-shaped projection 7 in the mounted state.
The dimension between the surface on the wrist 2 surface side of the cuff 1 and the surface on the side opposite to the wrist 2 at the portion arranged almost directly above the forearm in the forearm longitudinal direction with respect to the central portion 7a of the radial stalk-like projection 7 It is characterized in that it is formed smaller than the parts arranged on both ends.
【００１１】また請求項３の発明は、請求項１におい
て、橈骨茎状突起部７の中央部７ａに対する前腕長手方
向の両端側に配置される部分において、カフ１の手首２
表面側の面に、弾性部材１１をカフ１の表面から突出さ
せて設けて成ることを特徴とするものである。According to a third aspect of the present invention, in the first aspect, the wrist 2 of the cuff 1 is provided at a portion disposed on both ends in the longitudinal direction of the forearm with respect to the central portion 7a of the radial pedicle-shaped projection 7.
The elastic member 11 is provided on the surface on the front surface side so as to protrude from the surface of the cuff 1.
【００１２】また請求項４の発明は、請求項１におい
て、橈骨茎状突起部７の中央部７ａの略直上に配置され
る中央カフ１ａと、橈骨茎状突起部７の中央部７ａに対
する前腕長手方向の両端側にそれぞれ配置される二つの
側部カフ１ｂ，１ｂとを前腕長手方向に連設してカフ１
を形成し、装着状態における中央カフ１ａの手首表面側
の面から手首とは反対側の面の間の寸法が、側部カフ１
ｂ，１ｂよりも小さく形成されていることを特徴とする
ものである。According to a fourth aspect of the present invention, in the first aspect, the central cuff 1a is disposed substantially immediately above the central portion 7a of the radial pedicle-shaped projection 7, and the forearm with respect to the central portion 7a of the radial pedicle-shaped projection 7. Two side cuffs 1b, 1b respectively arranged at both ends in the longitudinal direction are connected in the longitudinal direction of the forearm to form a cuff 1
The dimension between the surface on the wrist surface side of the central cuff 1a in the mounted state and the surface on the side opposite to the wrist is the side cuff 1a.
b, 1b.
【００１３】また請求項５の発明は、請求項１におい
て、手首表面側におけるカフ１の外装を構成するシート
材８の厚みを、橈骨茎状突起部７の中央部７ａの略直上
に配置される部分の方が、橈骨茎状突起部７の中央部７
ａに対する前腕長手方向の両端側にそれぞれ配置される
部分よりも厚くなるように形成して成ることを特徴とす
るものである。According to a fifth aspect of the present invention, in the first aspect, the thickness of the sheet material 8 constituting the exterior of the cuff 1 on the wrist surface side is arranged substantially directly above the central portion 7a of the radial pedicle-shaped projection 7. The central part 7 of the radial stalk-like projection 7
a is formed so as to be thicker than portions respectively disposed at both ends in the longitudinal direction of the forearm with respect to a.
【００１４】[0014]
【発明の実施の形態】以下、本発明を添付図面に示す実
施形態に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.
【００１５】本実施形態のカフ１は、図７〜９に示すよ
うに、手首周方向イに沿って装着されるものであり、例
えば外装がウレタン、シリコンなどの可撓性のシート材
で形成された矩形状の袋体で構成されている。図８はカ
フ１を手首２に装着した場合を手首断面から見た図であ
り、図７は手首２に装着しカフ１を真上から見た図であ
る。ここでは、カフ１の手首周方向の長さは、手首手掌
側の腱９などが配置された硬い組織エリア５０を起点と
して橈骨５側に巻き付けたときに橈骨動脈３を通り少な
くとも橈骨茎状突起部７に至り且つ尺骨動脈４には至ら
ないような長さＬであり、また、前腕長手方向ロ（手首
長手方向）の長さは、少なくとも橈骨茎状突起部７の略
直上において橈骨動脈３を局所的に圧迫するための長さ
Ｄとを有しており、尺骨動脈４を圧迫せずに、橈骨動脈
３のみを圧迫、または阻血できるようになっている。As shown in FIGS. 7 to 9, the cuff 1 according to the present embodiment is mounted along the wrist circumferential direction A. For example, the exterior is formed of a flexible sheet material such as urethane or silicon. It is composed of a rectangular bag body. FIG. 8 is a view of the case where the cuff 1 is mounted on the wrist 2 as viewed from the cross section of the wrist, and FIG. 7 is a view of the case where the cuff 1 is mounted on the wrist 2 and viewed from directly above. Here, the length of the cuff 1 in the circumferential direction of the wrist is such that at least the radial stalk-shaped projection passes through the radial artery 3 when wound around the radius 5 from a hard tissue area 50 on which the tendon 9 on the palm side of the wrist is arranged as a starting point. The length L is such that it reaches the part 7 and does not reach the ulnar artery 4, and the length of the forearm longitudinal direction B (the wrist longitudinal direction) is at least almost directly above the radial stalk-shaped protrusion 7. 3 for locally compressing the ulnar artery 4 so that only the radial artery 3 can be compressed or ischemic without compressing the ulnar artery 4.
【００１６】なお、カフ１の手首周方向イの長さの範囲
は、図８に示すように、カフ１の一端ａを手首手掌側の
硬い組織エリア５０のうちの最も尺骨動脈４側（図８の
右側）に位置する腱９を起点として橈骨５側に巻き付け
たときにカフ１の手首周方向イの先端ｂが尺骨動脈４の
手前で止まる最大長さＬ２と、手首手掌側の硬い組織エ
リア５０のうちの最も橈骨動脈３側（図８の左側）に位
置する腱９を起点として橈骨５側に巻き付けたときにカ
フ１の手首周方向イの先端ｂが橈骨茎状突起部７まで達
して止まる最短長さＬ１との間で適宜変更可能である。
ここでは、図８に示すように、手首手掌側の腱９などの
硬い組織エリア５０の中間側に位置する腱９を起点とし
て橈骨茎状突起部７を通り、手首２の約半周をカバーで
きる長さＬ３に設定されている。As shown in FIG. 8, the length of the cuff 1 in the circumferential direction of the wrist is such that one end a of the cuff 1 is located closest to the ulnar artery 4 in the hard tissue area 50 on the palm side of the wrist (see FIG. 8). 8 right side), the cuff 1 has a maximum length L2 at which the distal end b in the wrist circumferential direction stops before the ulnar artery 4 when wound around the radius 5 with the tendon 9 as a starting point, and a hard tissue on the palm side of the wrist. When wound around the radius 5 starting from the tendon 9 located on the radial artery 3 side (the left side in FIG. 8) of the area 50, the tip b of the cuff 1 in the wrist circumferential direction a reaches the radial stalk-shaped projection 7. It can be changed as appropriate between the shortest length L1 that reaches and stops.
Here, as shown in FIG. 8, approximately half the circumference of the wrist 2 can be covered by passing through the radial stalk-like projection 7 starting from the tendon 9 located on the intermediate side of the hard tissue area 50 such as the tendon 9 on the wrist palm side. The length is set to L3.
【００１７】従って、カフ１の手首周方向イの一端ａを
硬い組織エリア５０に位置させ、これを起点としてカフ
１を橈骨５側に巻いて橈骨動脈３と橈骨茎状突起部７と
を圧迫し、且つ尺骨動脈４を圧迫しないようにすること
で、カフ１を橈骨動脈３が生体表面に最も近い位置であ
る橈骨茎状突起部７を含むように装着でき、尺骨動脈４
を阻血せずに橈骨動脈３のみを阻血できるようになる。
これにより、手首２に存在する２本の太い動脈３，４の
うち、片方の橈骨動脈３だけを圧迫するのでカフ１が捉
える脈波信号は正確なものとなる。つまり、両動脈を圧
迫する従来方式の問題における２本の動脈の脈波信号の
干渉による影響がないものとなり、血圧判定精度への影
響を軽減でき、信頼性の高い血圧、脈波測定等の測定を
実施でき、正確な血圧値を判定することができる。Accordingly, one end “a” of the cuff 1 in the wrist circumferential direction “a” is located in the hard tissue area 50, and the cuff 1 is wound around the radius 5 with the starting point as a starting point to compress the radial artery 3 and the radial pedicle 7. By preventing the ulnar artery 4 from being compressed, the cuff 1 can be mounted so that the radial artery 3 includes the radial stalk-like projection 7 which is the position closest to the body surface.
, And only the radial artery 3 can be occluded.
Accordingly, only the radial artery 3 of the two thick arteries 3 and 4 present on the wrist 2 is compressed, so that the pulse wave signal captured by the cuff 1 is accurate. In other words, there is no influence due to the interference between the pulse wave signals of the two arteries in the problem of the conventional method of compressing both arteries, and the influence on the blood pressure determination accuracy can be reduced. Measurement can be performed and an accurate blood pressure value can be determined.
【００１８】しかも、カフ１の長さを手首手掌側の腱９
などの硬い組織エリア５０を起点として少なくとも橈骨
茎状突起部７に至る長さとすることで、橈骨動脈３の位
置の個人差に十分に対応できるものとなり、そのうえ加
圧中のカフ１の位置ずれや動脈の逃げをなくすことがで
きると同時に、カフ１による阻血部位が局所的であるた
め、使用者の圧迫感が少なく、例えば手首周長が１３５
ｃｍ〜２２０ｃｍまで橈骨動脈３の位置の個人差に影響
なく阻血できて、装着者への負担が少ない理想的なカフ
１による阻血を実行できるものである。Further, the length of the cuff 1 is adjusted by the tendon 9 on the palm side of the wrist.
By setting the length from the hard tissue area 50 as a starting point to at least the radial stalk-shaped projection 7, it is possible to sufficiently cope with individual differences in the position of the radial artery 3, and furthermore, the displacement of the cuff 1 during pressurization At the same time that the cuff 1 is localized, so that the user feels less pressure and, for example, has a wrist circumference of 135.
It is possible to perform ischemia by an ideal cuff 1 with a small burden on the wearer, since blood can be blocked without affecting individual differences in the position of the radial artery 3 from cm to 220 cm.
【００１９】図１０はカフ１を湾曲状に形成する場合に
おいて、手首２の外周の少なくとも４分の１を含む長さ
Ｌを有し、手首断面の長径軸ハと手首２外周との阻血す
る動脈側の交点６０を通り、且つ腱９から橈骨茎状突起
部７までの手首外周に合わせた湾曲形状にした場合を示
している。これにより、手首２において曲率半径の小さ
い橈骨茎状突起部７への密着性が良く、圧迫感を感じる
ことなくカフ１のずれを防止でき、圧力伝達効率が良く
なる。FIG. 10 shows a case in which the cuff 1 is formed in a curved shape, has a length L including at least a quarter of the outer circumference of the wrist 2, and blocks blood between the major axis C of the wrist section and the outer circumference of the wrist 2. A case is shown in which the curved shape passes through the intersection 60 on the side of the artery and conforms to the outer circumference of the wrist from the tendon 9 to the radial pedicle 7. Thus, the wrist 2 has good adhesion to the radial pedicle-shaped projection 7 having a small radius of curvature, can prevent the cuff 1 from shifting without feeling a feeling of pressure, and improves pressure transmission efficiency.
【００２０】図１は、カフ１を手首２に装着した場合に
おける、前腕長手方向に沿った断面図である。カフ１の
外装を構成するシート材８の厚みは全体に亘って略均一
に形成されており、このシート材８のうち、装着状態に
おいて手首２とは反対側に配置される外側シート材８ａ
は平面状に形成されている。一方、手首２の表面側に配
置される内側シート材８ｂは屈曲成形されることによ
り、橈骨茎状突起部７の中央部７ａの略直上に配置され
る部分において手首２の表面側に開口する凹部１０が形
成されている。このためカフ１の外側シート材８ａと内
側シート材８ｂとの間の寸法、すなわちカフ１の手首２
表面側の面から手首２とは反対側の面の間の寸法は、橈
骨茎状突起部７の中央部７ａの略直上と、橈骨茎状突起
部７の中央部７ａに対して前腕長手方向の両端側とで
は、前者の方が小さく形成されている。FIG. 1 is a cross-sectional view along the longitudinal direction of the forearm when the cuff 1 is mounted on the wrist 2. The thickness of the sheet material 8 constituting the exterior of the cuff 1 is substantially uniform throughout, and of the sheet materials 8, the outer sheet material 8a arranged on the opposite side to the wrist 2 in the mounted state.
Is formed in a planar shape. On the other hand, the inner sheet material 8b arranged on the surface side of the wrist 2 is bent and formed, so that it opens to the surface side of the wrist 2 at a portion arranged almost directly above the central portion 7a of the radial pedicle-shaped projection 7. A recess 10 is formed. Therefore, the dimension between the outer sheet material 8a and the inner sheet material 8b of the cuff 1, that is, the wrist 2 of the cuff 1
The dimension between the surface on the front side and the surface on the side opposite to the wrist 2 is substantially directly above the central portion 7a of the radial pedicle 7 and the longitudinal direction of the forearm with respect to the central portion 7a of the radial pedicle 7. The former is smaller than both ends.
【００２１】このように形成されたカフ１の内部を加圧
することによりカフ１にて手首２を圧迫すると、カフ１
は橈骨茎状突起部７の中央部７ａの略直上に配置されて
いる部分よりも、橈骨茎状突起部７の中央部７ａに対し
て前腕長手方向の両端側に配置されている部分の方が、
膨脹量が大きくなるものであり、このため、カフ１から
手首２の表面にかけられる圧迫力は、橈骨茎状突起部７
の中央部７ａに対する前腕長手方向の両端側でのカフ１
から手首２表面への圧迫力の方が、橈骨茎状突起部７の
中央部７ａの略直上での圧迫力よりも大きくなる。When the cuff 1 presses the wrist 2 by pressurizing the inside of the cuff 1 formed as described above, the cuff 1
Is closer to the central portion 7a of the radial stalk-shaped projection 7 than to the portion arranged substantially directly above the central portion 7a of the radial stalk-shaped projection 7. But,
The amount of inflation increases, so that the compression force applied to the surface of the wrist 2 from the cuff 1
Cuff 1 at both ends in the longitudinal direction of the forearm with respect to the central portion 7a
The compression force on the surface of the wrist 2 from above is greater than the compression force substantially immediately above the central portion 7a of the radial pedicle-shaped projection 7.
【００２２】このとき、橈骨動脈３には、橈骨茎状突起
部７の中央部７ａと手首２の表面との間に配置されてい
る部分については、橈骨茎状突起部７の中央部７ａが手
首２の表面側に向けて隆起しているために充分な圧迫力
がかけられ、また橈骨茎状突起部７の中央部７ａに対し
て前腕長手方向の両端側にそれぞれ配置されている部分
については、この部分におけるカフ１から手首２にかか
る圧迫力が大きくなっているため、同様に充分な圧迫力
がかけられる。この結果、カフ１が装着されて圧迫力が
かけられている領域において、図５のＰ1に示すよう
に、橈骨動脈３には血流の上流側から下流側に亘ってほ
ぼ均一な分布で圧迫力がかけられることとなる。At this time, in the radial artery 3, the central portion 7 a of the radial pedicle 7 is located between the central portion 7 a of the radial pedicle 7 and the surface of the wrist 2. Sufficient compressive force is applied because it is raised toward the surface side of the wrist 2, and the portions arranged at both ends in the longitudinal direction of the forearm with respect to the central portion 7 a of the radial stalk-like projection 7. Since the compression force applied from the cuff 1 to the wrist 2 in this portion is large, a sufficient compression force is similarly applied. As a result, in the region where the cuff 1 is multiplied by the compression force is mounted, as shown in P 1 in FIG. 5, the radial artery 3 in substantially uniform distribution throughout the downstream side from the upstream side of the blood flow Compression force will be applied.
【００２３】従って、カフ１からの圧迫力によってカフ
１の装着部位で橈骨動脈３の血流が阻血される場合に
は、血流はカフ１の装着部位において橈骨動脈３の上流
側から下流側に亘って全体的に阻血されることとなり、
カフ１の装着部位において橈骨動脈３の上流側や下流側
から血流が流れ込むことを防止することができる。従っ
て、カフ圧−脈圧曲線を測定した場合には図６に示すよ
うにノイズが重畳しないカーブが測定でき、高い測定精
度にて血圧の測定を行なうことができるものである。Accordingly, when the blood flow in the radial artery 3 is blocked at the cuff 1 mounting site by the compression force from the cuff 1, the blood flow is from the upstream side to the downstream side of the radial artery 3 at the cuff 1 mounting site. Will be totally blocked over
It is possible to prevent blood flow from flowing from the upstream side or the downstream side of the radial artery 3 at the cuff 1 attachment site. Therefore, when the cuff pressure-pulse pressure curve is measured, a curve in which noise is not superimposed can be measured as shown in FIG. 6, and the blood pressure can be measured with high measurement accuracy.
【００２４】図２は、他の実施形態における、カフ１を
手首２に装着した場合での、前腕長手方向に沿った断面
図を示すものである。この実施形態では、カフ１の外装
を構成するシート材８のうち、装着状態において手首２
とは反対側に配置される外側シート材８ａと、手首２側
に配置される内側シート材８ｂとは、いずれも平面状に
形成されており、カフ１の外側シート材８ａと内側シー
ト材８ｂとの間の寸法、すなわちカフ１の手首２表面側
の面から手首２とは反対側の面の間の寸法は、全体に亘
ってほぼ等しく形成されている。また内側シート材８ｂ
の表面には、橈骨茎状突起部７の中央部７ａに対する前
腕長手方向の両端側に配置される部分において、シリコ
ンやウレタンゴム等からなる弾性部材１１が、内側シー
ト材８ｂの表面から手首２の表面側に向けて突出するよ
うに添設されている。FIG. 2 is a cross-sectional view along the longitudinal direction of the forearm when the cuff 1 is mounted on the wrist 2 in another embodiment. In this embodiment, of the sheet members 8 constituting the exterior of the cuff 1, the wrist 2
The outer sheet material 8a disposed on the opposite side to the wrist 2 and the inner sheet material 8b disposed on the wrist 2 side are both formed in a planar shape, and the outer sheet material 8a and the inner sheet material 8b of the cuff 1 are formed. , That is, the dimension between the surface on the wrist 2 surface side of the cuff 1 and the surface on the side opposite to the wrist 2 is substantially equal throughout. Also the inner sheet material 8b
On the surface of the inner sheet material 8b, the elastic member 11 made of silicon, urethane rubber, or the like is placed on the both ends of the radial pedicle-shaped protrusion 7 at both ends in the longitudinal direction of the forearm with respect to the central part 7a. Is provided so as to protrude toward the front surface side.
【００２５】このように形成されたカフ１の内部を加圧
することによりカフ１にて手首２を圧迫すると、カフ１
の膨脹量は全体に亘ってほぼ均一なものであるが、橈骨
茎状突起部７の中央部７ａの略直上においては手首２は
内側シート材８ｂの表面にて圧迫されるのに対して、橈
骨茎状突起部７の中央部７ａに対する前腕長手方向の両
端側においては手首２は内側シート材８ｂの表面から突
出する弾性部材１１にて圧迫されることとなり、このた
め、カフ１から手首２の表面にかけられる圧迫力は、橈
骨茎状突起部７の中央部７ａに対する前腕長手方向の両
端側でのカフ１から手首２表面への圧迫力の方が、橈骨
茎状突起部７の中央部７ａの略直上での圧迫力よりも大
きくなる。When the wrist 2 is pressed by the cuff 1 by pressurizing the inside of the cuff 1 thus formed, the cuff 1
Although the amount of expansion of the wrist 2 is substantially uniform over the whole, the wrist 2 is pressed on the surface of the inner sheet material 8b substantially immediately above the central portion 7a of the radial pedicle-shaped projection 7, whereas At both ends in the forearm longitudinal direction with respect to the central portion 7a of the radial pedicle-shaped projection 7, the wrist 2 is pressed by the elastic member 11 protruding from the surface of the inner sheet material 8b. The compression force applied to the surface of the wrist 2 at the both ends in the longitudinal direction of the forearm from the cuff 1 to the surface of the wrist 2 with respect to the central portion 7a of the radial stalk-shaped projection 7 is larger than the central force of the radial stalk-shaped projection 7 It becomes larger than the compression force almost immediately above 7a.
【００２６】この結果、図１に示す実施形態の場合と同
様に、カフ１が装着されて圧迫力がかけられている領域
において、橈骨動脈３には血流の上流側から下流側に亘
ってほぼ均一な分布で圧迫力がかけられることとなり、
ノイズが重畳しないカフ圧−脈圧曲線のカーブが測定で
きて、高い測定精度にて血圧の測定を行なうことができ
るものである。As a result, as in the case of the embodiment shown in FIG. 1, in the region where the cuff 1 is attached and the compressive force is applied, the radial artery 3 extends from the upstream side to the downstream side of the blood flow. Compression force will be applied with a substantially uniform distribution,
It is possible to measure a cuff pressure-pulse pressure curve in which noise is not superimposed, and to measure blood pressure with high measurement accuracy.
【００２７】図３は更に他の実施形態における、カフ１
を手首２に装着した場合での、前腕長手方向に沿った断
面図を示すものである。この実施形態では、カフ１は橈
骨茎状突起部７の中央部７ａの略直上に配置される中央
カフ１ａと、橈骨茎状突起部７の中央部７ａに対する前
腕長手方向の両端側にそれぞれ配置される二つの側部カ
フ１ｂ，１ｂとで構成され、一方の側部カフ１ｂ、中央
カフ１ａ、他方の側部カフ１ｂを前腕長手方向に順次連
設して三層構造のカフ１が形成されている。図示はして
いないが、これらの中央カフ１ａ及び側部カフ１ｂ，１
ｂは、互いに連通するように形成されている。FIG. 3 shows a cuff 1 according to still another embodiment.
Is a cross-sectional view along the longitudinal direction of the forearm when is attached to the wrist 2. FIG. In this embodiment, the cuff 1 is disposed on the central cuff 1a substantially directly above the central portion 7a of the radial pedicle-shaped projection 7 and on both ends in the longitudinal direction of the forearm with respect to the central portion 7a of the radial pedicle-shaped projection 7. And a side cuff 1b, a center cuff 1a, and the other side cuff 1b are sequentially connected in the longitudinal direction of the forearm to form a cuff 1 having a three-layer structure. Have been. Although not shown, these central cuff 1a and side cuffs 1b, 1b
b are formed so as to communicate with each other.
【００２８】ここで、中央カフ１ａ及び各側部カフ１
ｂ，１ｂの外装を構成するシート材８のうち、装着状態
において手首２とは反対側に配置される外側シート材８
ａと、手首２側に配置される内側シート材８ｂとの間の
寸法、すなわちカフ１の手首２表面側の面から手首２と
は反対側の面の間の寸法は、中央カフ１ａの方が各側部
カフ１ｂ，１ｂよりも小さくなるように形成されてい
る。また、中央カフ１ａと各側部カフ１ｂ，１ｂの外側
シート材８ａの表面（すなわち手首２とは反対側の表
面）は略面一に形成されており、そのため中央カフ１ａ
の内側シート材８ｂは各側部カフ１ｂ，１ｂの内側シー
ト材８ｂに対して、手首２表面とは反対側の位置に配置
されており、カフ１には橈骨茎状突起部７の中央部７ａ
の略直上に配置される部分において手首２の表面側に開
口する凹部１０が形成されている。Here, the central cuff 1a and each side cuff 1
b, 1b, the outer sheet material 8 disposed on the opposite side to the wrist 2 in the mounted state,
a and the inner sheet material 8b arranged on the wrist 2 side, that is, the dimension between the surface on the wrist 2 surface side of the cuff 1 and the surface opposite to the wrist 2 is closer to the central cuff 1a. Are formed smaller than the side cuffs 1b, 1b. Also, the surface of the outer sheet material 8a of the central cuff 1a and the side cuffs 1b, 1b (that is, the surface opposite to the wrist 2) is formed substantially flush, so that the central cuff 1a
The inner sheet member 8b is disposed at a position opposite to the surface of the wrist 2 with respect to the inner sheet member 8b of each side cuff 1b, 1b. 7a
A concave portion 10 is formed in a portion arranged almost directly above the wrist 2 so as to open toward the surface of the wrist 2.
【００２９】このように形成されたカフ１の内部を加圧
することによりカフ１にて手首２を圧迫すると、カフ１
は橈骨茎状突起部７の中央部７ａの略直上に配置されて
いる中央カフ１ａよりも、橈骨茎状突起部７の中央部７
ａに対して前腕長手方向の両端側に配置されている各側
部カフ１ｂ，１ｂの方が、膨脹量が大きくなるものであ
り、このため、カフ１から手首２の表面にかけられる圧
迫力は、橈骨茎状突起部７の中央部７ａに対する前腕長
手方向の両端側でのカフ１から手首２表面への圧迫力の
方が、橈骨茎状突起部７の中央部７ａの略直上での圧迫
力よりも大きくなる。When the wrist 2 is pressed by the cuff 1 by pressurizing the inside of the cuff 1 thus formed, the cuff 1
Is a central portion 7 of the radial stalk-shaped projection 7 more than a central cuff 1a arranged substantially directly above the central portion 7a of the radial stalk-shaped projection 7.
The side cuffs 1b, 1b arranged at both ends in the longitudinal direction of the forearm with respect to a have a larger inflation amount. Therefore, the compression force applied from the cuff 1 to the surface of the wrist 2 is smaller. The pressing force from the cuff 1 to the surface of the wrist 2 at both ends in the longitudinal direction of the forearm with respect to the central portion 7a of the radial pedicle-shaped projection 7 is compressed almost directly above the central portion 7a of the radial pedicle-shaped projection 7. Greater than force.
【００３０】この結果、図１に示す実施形態の場合と同
様に、カフ１が装着されて圧迫力がかけられている領域
において、橈骨動脈３には血流の上流側から下流側に亘
ってほぼ均一な分布で圧迫力がかけられることとなり、
ノイズが重畳しないカフ圧−脈圧曲線のカーブが測定で
きて、高い測定精度にて血圧の測定を行なうことができ
るものである。As a result, as in the case of the embodiment shown in FIG. 1, in the region where the cuff 1 is attached and compression force is applied, the radial artery 3 extends from the upstream side to the downstream side of the blood flow. Compression force will be applied with a substantially uniform distribution,
It is possible to measure a cuff pressure-pulse pressure curve in which noise is not superimposed, and to measure blood pressure with high measurement accuracy.
【００３１】図４は更に他の実施形態における、カフ１
を手首２に装着した場合での、前腕長手方向に沿った断
面図を示すものである。この実施形態では、カフ１の外
装を構成するシート材８のうち、装着状態において手首
２とは反対側に配置される外側シート材８ａと、手首２
側に配置される内側シート材８ｂとは、いずれも平面状
に形成されており、カフ１の外側シート材８ａと内側シ
ート材８ｂとの間の寸法、すなわちカフ１の手首２表面
側の面から手首２とは反対側の面の間の寸法は、全体に
亘ってほぼ等しく形成されている。FIG. 4 shows a cuff 1 according to still another embodiment.
Is a cross-sectional view along the longitudinal direction of the forearm when is attached to the wrist 2. FIG. In this embodiment, the outer sheet material 8a, which is arranged on the opposite side to the wrist 2 in the mounted state, of the sheet material 8 constituting the exterior of the cuff 1, and the wrist 2
The inner sheet material 8b disposed on the side is formed in a planar shape, and the dimension between the outer sheet material 8a and the inner sheet material 8b of the cuff 1, that is, the surface on the wrist 2 surface side of the cuff 1 And the dimension between the surface opposite to the wrist 2 is substantially equal throughout.
【００３２】ここで、外側シート材８ａは全体にわたっ
てほぼ等しい厚みに形成されている。一方、内側シート
材８ｂのうちの、橈骨茎状突起部７の中央部７ａに対す
る前腕長手方向の両端側にそれぞれ配置される部分は、
外側シート材８ａとほぼ同一の厚みを有する肉薄部１２
ｂとして形成されているが、内側シート材８ｂのうちの
橈骨茎状突起部７の中央部７ａの略直上に配置される部
分は、肉薄部１２ｂよりも厚みが厚い肉厚部１２ａとし
て形成されている。Here, the outer sheet material 8a is formed to have substantially the same thickness throughout. On the other hand, portions of the inner sheet material 8b that are respectively disposed on both ends in the forearm longitudinal direction with respect to the central portion 7a of the radial pedicle-shaped protrusion 7 are:
Thin portion 12 having substantially the same thickness as outer sheet material 8a
b, the portion of the inner sheet material 8b that is disposed substantially directly above the central portion 7a of the radial stalk-like projection 7 is formed as a thick portion 12a that is thicker than the thin portion 12b. ing.
【００３３】このように形成されたカフ１の内部を加圧
することによりカフ１にて手首２を圧迫すると、内側シ
ート材８ｂの肉厚部１２ａは肉薄部１２ｂよりも剛性が
高くなっているため、膨脹量が肉薄部１２ｂよりも小さ
くなる。このため手首２表面に向けてのカフ１の膨脹量
は、橈骨茎状突起部７の中央部７ａの略直上に配置され
ている部分（すなわち肉厚部１２ａが形成されている部
分）よりも、橈骨茎状突起部７の中央部７ａに対する前
腕長手方向の両端側に配置されている部分（すなわち肉
薄部１２ｂが形成されている部分）の方が、大きくな
り、このため、カフ１から手首２の表面にかけられる圧
迫力は、橈骨茎状突起部７の中央部７ａに対する前腕長
手方向の両端側でのカフ１から手首２表面への圧迫力の
方が、橈骨茎状突起部７の中央部７ａの略直上での圧迫
力よりも大きくなる。When the wrist 2 is pressed by the cuff 1 by pressing the inside of the cuff 1 thus formed, the thick portion 12a of the inner sheet material 8b has higher rigidity than the thin portion 12b. , The expansion amount becomes smaller than the thin portion 12b. For this reason, the amount of inflation of the cuff 1 toward the surface of the wrist 2 is larger than that of the portion arranged almost directly above the central portion 7a of the radial stalk-like projection 7 (that is, the portion where the thick portion 12a is formed). The portion arranged at both ends in the longitudinal direction of the forearm with respect to the central portion 7a of the radial stalk-shaped projection 7 (that is, the portion where the thin portion 12b is formed) becomes larger, and therefore, the cuff 1 to the wrist The compression force applied to the surface of the wrist 2 from the cuff 1 to the surface of the wrist 2 at both ends in the longitudinal direction of the forearm with respect to the central portion 7a of the radial stalk 7 It becomes greater than the compression force substantially immediately above the portion 7a.
【００３４】この結果、図１に示す実施形態の場合と同
様に、カフ１が装着されて圧迫力がかけられている領域
において、橈骨動脈３には血流の上流側から下流側に亘
ってほぼ均一な分布で圧迫力がかけられることとなり、
ノイズが重畳しないカフ圧−脈圧曲線のカーブが測定で
きて、高い測定精度にて血圧の測定を行なうことができ
るものである。As a result, as in the embodiment shown in FIG. 1, in the region where the cuff 1 is attached and the compressive force is applied, the radial artery 3 extends from the upstream side to the downstream side of the blood flow. Compression force will be applied with a substantially uniform distribution,
It is possible to measure a cuff pressure-pulse pressure curve in which noise is not superimposed, and to measure blood pressure with high measurement accuracy.
【００３５】図１１は手首血圧計システムの一例を示し
ている。この手首血圧計システムは、腱９から橈骨茎状
突起７を含み、橈骨５の方向へ巻回するカフ１、および
カフ１を手首２に固定するバンド２２、橈骨動脈３が阻
血するまで加圧するポンプ２３、阻血後徐々に排気する
定速排気弁２４、カフ１の内圧に重畳した橈骨動脈３の
脈波信号を検出する圧力センサー２５および例えば０．
５〜１０Ｈｚのバンドパスフィルタ２６、脈波信号をた
とえば５０Ｈｚのサンプリングでデジタル化するＡ／Ｄ
変換器２７、血圧判定を行うＣＰＵ２８、血圧測定終了
後、測定値を表示させる表示器２９、カフ１を急速排気
する急速排気弁３０により構成されている。カフ１を腱
９の真上から橈骨５へ巻回させ、バンド２２で手首２に
固定した後、たとえば２４．０ｋＰａ（１８０ｍｍＨ
ｇ）までポンプ２３によって加圧し、橈骨動脈３を阻血
したのち、たとえば定速排気弁２４によって０．４ｋＰ
ａ／ｓ（３ｍｍＨｇ／ｓ）で減圧しながら、カフ１の内
圧に重畳した橈骨動脈３の脈波のみを圧力センサー２５
及びバンドパスフィルタ２６で抽出する。脈波信号はＡ
／Ｄ変換器２７でデジタル信号としてＣＰＵ２８に取り
込まれ、脈拍数、最高、最低血圧を判定し、表示器２９
に表示する。FIG. 11 shows an example of a wrist sphygmomanometer system. This wrist sphygmomanometer system includes a cuff 1 that includes a tendon 9 and a radial pedicle 7 and is wound in the direction of the radius 5, a band 22 that fixes the cuff 1 to the wrist 2, and pressurization until the radial artery 3 is blocked. A pump 23, a constant-speed exhaust valve 24 for gradually exhausting after ischemia, a pressure sensor 25 for detecting a pulse wave signal of the radial artery 3 superimposed on the internal pressure of the cuff 1, and a pressure sensor 25.
5-10 Hz band pass filter 26, A / D for digitizing pulse wave signal by sampling at, for example, 50 Hz
It comprises a converter 27, a CPU 28 for determining blood pressure, a display 29 for displaying a measured value after the blood pressure measurement is completed, and a quick exhaust valve 30 for quickly exhausting the cuff 1. After the cuff 1 is wound around the radius 5 from directly above the tendon 9 and fixed to the wrist 2 with the band 22, for example, 24.0 kPa (180 mmH
g) until the radial artery 3 is insufflated by pump 23 until 0.4 kP by a constant speed exhaust valve 24.
While reducing the pressure at a / s (3 mmHg / s), only the pulse wave of the radial artery 3 superimposed on the internal pressure of the cuff 1 is measured by the pressure sensor 25.
And a band-pass filter 26. Pulse wave signal is A
The pulse rate, the maximum and minimum blood pressures are determined by the CPU 28 as digital signals in the / D converter 27, and the display 29
To be displayed.
【００３６】[0036]
【発明の効果】上記のように本発明の請求項１に係る血
圧計用カフは、手首周方向に巻回されて手首を圧迫する
血圧計用カフにおいて、カフの手首周方向の長さは、手
首手掌側の腱が配置されている硬い組織エリアを起点と
して橈骨側に巻き付けたときに橈骨動脈を通り少なくと
も橈骨茎状突起部に至り且つ尺骨動脈には至らないよう
な長さを有すると共に、カフの前腕長手方向の長さは、
少なくとも橈骨茎状突起部の略直上において橈骨動脈を
局所的に圧迫するための長さを有し、カフを手首周方向
に巻回させて圧迫させた際の、橈骨茎状突起部の中央部
に対する前腕長手方向の両端側でのカフから手首表面へ
の圧迫力が、橈骨茎状突起部の中央部の略直上での圧迫
力よりも大きくなるように形成するため、カフの手首周
方向の一端部を手首手掌側の腱などの硬い組織エリアに
位置させ、これを起点としてカフを橈骨側に向かって巻
き付けることで、尺骨動脈を阻血せずに、橈骨動脈のみ
を阻血でき、同時に阻血した場合に生じる２本の動脈の
脈波信号の干渉による血圧判定精度への影響を軽減し
て、信頼性の高い血圧、脈波測定等の測定を実施でき、
正確な血圧値を判定することができるものであり、しか
も、手首を圧迫することにより橈骨動脈を圧迫させて測
定するにあたり、橈骨動脈には、橈骨茎状突起部の中央
部と手首の表面との間に配置されている部分について
は、手首の表面側に向けて隆起している橈骨茎状突起部
の中央部のために充分な圧迫力がかけられ、また橈骨茎
状突起部の中央部に対して前腕長手方向の両端側にそれ
ぞれ配置されている部分については、この部分における
カフから手首にかかる圧迫力を大きくして同様に充分な
圧迫力をかけることができるものであり、この結果、カ
フが装着されて圧迫力がかけられている領域において、
橈骨動脈には血流の上流側から下流側に亘ってほぼ均一
な分布で圧迫力をかけることができ、ノイズが重畳しな
いカフ圧−脈圧曲線のカーブが測定できて、高い測定精
度にて血圧の測定を行なうことができるものであるまた
請求項２の発明は、請求項１において、装着状態におけ
る、橈骨茎状突起部の中央部の略直上に配置される部分
での、カフの手首表面側の面から手首とは反対側の面の
間の寸法が、橈骨茎状突起部の中央部に対する前腕長手
方向の両端側に配置される部分よりも小さく形成されて
いるため、カフの内部を加圧することによりカフにて手
首を圧迫すると、カフは橈骨茎状突起部の中央部の略直
上に配置されている部分よりも、橈骨茎状突起部の中央
部に対して前腕長手方向の両端側に配置されている部分
の方が、膨脹量が大きくなり、橈骨茎状突起部の中央部
に対する前腕長手方向の両端側でのカフから手首表面へ
の圧迫力を、橈骨茎状突起部の中央部の略直上での圧迫
力よりも大きくすることができるものである。As described above, the cuff for a sphygmomanometer according to the first aspect of the present invention is a cuff for a sphygmomanometer that is wound in the circumferential direction of the wrist and compresses the wrist. With a length such that when wrapped around the radial side from the hard tissue area where the tendon on the wrist palmar side is arranged as the starting point, it passes through the radial artery at least to the radial pedicle and does not reach the ulnar artery , The length of the cuff forearm longitudinal direction,
The central portion of the radial stalk when the cuff is wound in the circumferential direction of the wrist and compressed, at least substantially directly above the radial stalk, and has a length for locally compressing the radial artery. The compression force on the wrist surface from the cuff at both ends in the longitudinal direction of the forearm is formed so as to be greater than the compression force substantially immediately above the central portion of the radial pedicle-shaped projection, so that the cuff in the wrist circumferential direction By placing one end in a hard tissue area such as the tendon on the palm side of the wrist, and wrapping the cuff toward the radial side from this as a starting point, it was possible to block only the radial artery without blocking the ulnar artery, and at the same time was blocked It is possible to reduce the influence on the blood pressure determination accuracy due to the interference between the pulse wave signals of the two arteries that occurs in the case, and perform highly reliable blood pressure and pulse wave measurement.
It is possible to determine an accurate blood pressure value, and, furthermore, in measuring by compressing the radial artery by compressing the wrist, the radial artery has a central part of the radial pedicle and the surface of the wrist. For the part located between, a sufficient compressive force is applied to the central part of the radial pedicle protruding toward the surface side of the wrist, and the central part of the radial pedicle On the other hand, the portions arranged on both ends in the longitudinal direction of the forearm can increase the pressing force applied from the cuff to the wrist in this portion and apply sufficient pressing force in the same manner. , In the area where the cuff is attached and compression force is applied,
The radial artery can apply compression force with a substantially uniform distribution from the upstream side to the downstream side of the blood flow, and can measure the cuff pressure-pulse pressure curve without noise superimposition, with high measurement accuracy The invention according to claim 2 is capable of measuring blood pressure. According to claim 1, the wrist of the cuff at a portion arranged almost directly above the central portion of the radial pedicle-shaped projection in the mounted state. Since the dimension between the surface on the surface side and the surface on the side opposite to the wrist is formed smaller than the portions arranged on both ends in the longitudinal direction of the forearm with respect to the center of the radial pedicle, When the wrist is pressed by the cuff by applying pressure, the cuff is longer in the forearm longitudinal direction with respect to the central portion of the radial stalk than the portion that is disposed substantially immediately above the central portion of the radial stalk. The parts located at both ends have a larger amount of expansion. The compression force from the cuff to the wrist surface at both ends in the longitudinal direction of the forearm with respect to the central portion of the radial stalk is greater than the compression force substantially immediately above the central portion of the radial stalk. Can be done.
【００３７】また請求項３の発明は、請求項１におい
て、橈骨茎状突起部の中央部に対する前腕長手方向の両
端側に配置される部分において、カフの手首表面側の面
に、弾性部材をカフの表面から突出させて設けるため、
カフの内部を加圧することによりカフにて手首を圧迫す
ると、橈骨茎状突起部の中央部に対する前腕長手方向の
両端側において、手首を内側シート材の表面から突出す
る弾性部材にて圧迫することができ、このため、橈骨茎
状突起部の中央部に対する前腕長手方向の両端側でのカ
フから手首表面への圧迫力を、橈骨茎状突起部の中央部
の略直上での圧迫力よりも大きくすることができるもの
である。According to a third aspect of the present invention, in the first aspect, an elastic member is provided on a surface on the wrist surface side of the cuff at a portion arranged on both ends in the longitudinal direction of the forearm with respect to the center of the radial pedicle. In order to protrude from the surface of the cuff,
When the wrist is pressed by the cuff by pressurizing the inside of the cuff, the wrist is pressed by an elastic member protruding from the surface of the inner sheet material at both ends in the longitudinal direction of the forearm with respect to the center of the radial pedicle. For this reason, the pressing force from the cuff to the wrist surface at both ends in the longitudinal direction of the forearm with respect to the central portion of the radial pedicle is more than the compression force substantially immediately above the central portion of the radial pedicle. It can be made larger.
【００３８】また請求項４の発明は、請求項１におい
て、橈骨茎状突起部の中央部の略直上に配置される中央
カフと、橈骨茎状突起部の中央部に対する前腕長手方向
の両端側にそれぞれ配置される二つの側部カフとを前腕
長手方向に連設してカフを形成し、装着状態における中
央カフの手首表面側の面から手首とは反対側の面の間の
寸法が、側部カフよりも小さく形成するため、カフの内
部を加圧することによりカフにて手首を圧迫すると、橈
骨茎状突起部の中央部の略直上に配置されている中央カ
フよりも、橈骨茎状突起部の中央部に対して前腕長手方
向の両端側に配置されている各側部カフの方が、膨脹量
が大きくなり、このため、橈骨茎状突起部の中央部に対
する前腕長手方向の両端側でのカフから手首表面への圧
迫力を、橈骨茎状突起部の中央部の略直上での圧迫力よ
りも大きくすることができるものである。According to a fourth aspect of the present invention, in the first aspect, a central cuff is disposed substantially immediately above a central portion of the radial pedicle-shaped projection, and both ends in the longitudinal direction of the forearm with respect to the central portion of the radial pedicle-shaped projection. The two side cuffs respectively arranged in the forearm longitudinal direction are connected continuously to form a cuff, and the dimension between the wrist surface side surface and the wrist surface opposite surface of the central cuff in the mounted state, When the cuff is pressed against the wrist by pressing the inside of the cuff to form smaller than the side cuff, the stalk-like shape is larger than the central cuff located almost directly above the center of the radial stalk-like protrusion. Each side cuff arranged on both ends in the longitudinal direction of the forearm with respect to the central portion of the projection has a larger expansion amount, and therefore, both ends in the longitudinal direction of the forearm with respect to the central portion of the radial stalk-like projection. Compression on the wrist surface from the cuff on the side Those that can be greater than the compressive force at a substantially right above the center portion of the part.
【００３９】また請求項５の発明は、請求項１におい
て、手首表面側におけるカフの外装を構成するシート材
の厚みを、橈骨茎状突起部の中央部の略直上に配置され
る部分の方が、橈骨茎状突起部の中央部に対する前腕長
手方向の両端側にそれぞれ配置される部分よりも厚くな
るように形成するため、シート材の厚みが厚くなってい
る部分は剛性が高くなって、カフの内部を加圧すること
によりカフにて手首を圧迫すると、カフの手首表面側へ
の膨脹量が、シート材の厚みが厚くなっている部分で小
さくなり、この結果橈骨茎状突起部の中央部に対する前
腕長手方向の両端側でのカフから手首表面への圧迫力
を、橈骨茎状突起部の中央部の略直上での圧迫力よりも
大きくすることができるものである。According to a fifth aspect of the present invention, in the first aspect, the thickness of the sheet material constituting the exterior of the cuff on the front surface side of the wrist is adjusted to be closer to the portion arranged almost directly above the center of the radial pedicle-shaped projection. However, since it is formed so as to be thicker than the parts arranged at both ends in the longitudinal direction of the forearm with respect to the central part of the radial stalk-like projection, the part where the thickness of the sheet material is thicker has increased rigidity, When the wrist is pressed by the cuff by pressurizing the inside of the cuff, the amount of expansion of the cuff to the wrist surface side is reduced in a portion where the thickness of the sheet material is thick, and as a result, the center of the radial stalk-shaped protrusion is formed. The pressing force from the cuff to the wrist surface at both ends in the longitudinal direction of the forearm with respect to the part can be made greater than the pressing force substantially immediately above the central portion of the radial pedicle-shaped projection.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施の形態の一例を示す、カフを手首
に装着した場合での、前腕長手方向に沿った断面図であ
る。FIG. 1 is a cross-sectional view along a longitudinal direction of a forearm when a cuff is mounted on a wrist, showing an example of an embodiment of the present invention.
【図２】本発明の実施の形態の他例を示す、カフを手首
に装着した場合での、前腕長手方向に沿った断面図であ
る。FIG. 2 is a cross-sectional view along a forearm longitudinal direction when a cuff is attached to a wrist, showing another example of the embodiment of the present invention.
【図３】本発明の実施の形態の更に他例を示す、カフを
手首に装着した場合での、前腕長手方向に沿った断面図
である。FIG. 3 is a cross-sectional view along a forearm longitudinal direction when a cuff is attached to a wrist, showing still another example of the embodiment of the present invention.
【図４】本発明の実施の形態の更に他例を示す、カフを
手首に装着した場合での、前腕長手方向に沿った断面図
である。FIG. 4 is a cross-sectional view along a forearm longitudinal direction when a cuff is attached to a wrist, showing still another example of the embodiment of the present invention.
【図５】カフにて手首を圧迫した際における橈骨動脈に
かかる圧迫力を示すグラフである。FIG. 5 is a graph showing a compressive force applied to a radial artery when a wrist is compressed by a cuff.
【図６】本発明での、カフにて手首を圧迫した際におけ
るカフ圧−脈圧曲線を示すグラフである。FIG. 6 is a graph showing a cuff pressure-pulse pressure curve when a wrist is pressed by a cuff according to the present invention.
【図７】本発明での、カフの装着状態を手首手掌側から
見た平面図である。FIG. 7 is a plan view showing a state in which the cuff is mounted according to the present invention, as viewed from the wrist palm side.
【図８】同上の断面図である。FIG. 8 is a sectional view of the same.
【図９】（ａ）は同上の側面図、（ｂ）は斜視図であ
る。FIG. 9A is a side view of the same, and FIG. 9B is a perspective view.
【図１０】更に他の実施形態の断面図である。FIG. 10 is a sectional view of still another embodiment.
【図１１】血圧計の概略構成図である。FIG. 11 is a schematic configuration diagram of a sphygmomanometer.
【図１２】従来技術を示す、カフを手首に装着した場合
での、前腕長手方向に沿った断面図である。FIG. 12 is a cross-sectional view along a longitudinal direction of a forearm when a cuff is attached to a wrist, showing a conventional technique.
【図１３】従来技術での、カフにて手首を圧迫した際に
おけるカフ圧−脈圧曲線を示すグラフである。FIG. 13 is a graph showing a cuff pressure-pulse pressure curve when a wrist is pressed with a cuff according to the related art.
１ カフ １ａ 中央カフ １ｂ 側部カフ ２ 手首 ３ 橈骨動脈 ４ 尺骨動脈 ５ 橈骨 ７ 橈骨茎状突起部 ７ａ 中央部 ８ シート材 ９ 腱 １１ 弾性部材 ５０ 組織エリア DESCRIPTION OF SYMBOLS 1 Cuff 1a Central cuff 1b Side cuff 2 Wrist 3 Radial artery 4 Ulnar artery 5 Radius 7 Radial pedicle 7a Central part 8 Sheet material 9 Tendon 11 Elastic member 50 Tissue area
Claims (5)
血圧計用カフにおいて、カフの手首周方向の長さは、手
首手掌側の腱が配置されている硬い組織エリアを起点と
して橈骨側に巻き付けたときに橈骨動脈を通り少なくと
も橈骨茎状突起部に至り且つ尺骨動脈には至らないよう
な長さを有すると共に、カフの前腕長手方向の長さは、
少なくとも橈骨茎状突起部の略直上において橈骨動脈を
局所的に圧迫するための長さを有し、カフを手首周方向
に巻回させて圧迫させた際の、橈骨茎状突起部の中央部
に対する前腕長手方向の両端側でのカフから手首表面へ
の圧迫力が、橈骨茎状突起部の中央部の略直上での圧迫
力よりも大きくなるように形成して成ることを特徴とす
る血圧計用カフ。In a sphygmomanometer cuff wound around the wrist to compress the wrist, the length of the cuff in the circumferential direction of the cuff is determined by measuring a radius of the cuff starting from a hard tissue area where a tendon on the palm side of the wrist is arranged. When wrapped around the side, it has a length that at least reaches the radial pedicle and passes through the radial artery and does not reach the ulnar artery, and the length of the cuff forearm longitudinal direction is,
A central portion of the radial stalk when the cuff is wrapped in the wrist circumferential direction and compressed, at least substantially above the radial stalk and having a length to locally compress the radial artery. A pressure force on the wrist surface from the cuff at both ends in the longitudinal direction of the forearm is greater than a compression force substantially immediately above the central portion of the radial pedicle-shaped protrusion. Instrument cuff.
央部の略直上に配置される部分での、カフの手首表面側
の面から手首とは反対側の面の間の寸法が、橈骨茎状突
起部の中央部に対する前腕長手方向の両端側に配置され
る部分よりも小さく形成されていることを特徴とする請
求項１に記載の血圧計用カフ。2. In a wearing state, a dimension between a surface on a wrist surface side and a surface on a side opposite to a wrist of a cuff in a portion arranged substantially directly above a central portion of a radial stalk-like projection is radial radius. The cuff for a sphygmomanometer according to claim 1, wherein the cuff is formed to be smaller than portions arranged at both ends in the longitudinal direction of the forearm with respect to a central portion of the stalk-shaped protrusion.
手方向の両端側に配置される部分において、カフの手首
表面側の面に、弾性部材をカフの表面から突出させて設
けて成ることを特徴とする請求項１に記載の血圧計用カ
フ。3. An elastic member protruding from the surface of the cuff at the surface of the cuff on the wrist surface side at a portion arranged on both ends in the longitudinal direction of the forearm with respect to the center of the radial pedicle-shaped projection. The cuff for a sphygmomanometer according to claim 1, characterized in that:
される中央カフと、橈骨茎状突起部の中央部に対する前
腕長手方向の両端側にそれぞれ配置される二つの側部カ
フとを前腕長手方向に連設してカフを形成し、装着状態
における中央カフの手首表面側の面から手首とは反対側
の面の間の寸法が、側部カフよりも小さく形成されてい
ることを特徴とする請求項１に記載の血圧計用カフ。4. A central cuff disposed substantially directly above a central portion of the radial stalk-shaped projection, and two side cuffs respectively disposed at both ends in the forearm longitudinal direction with respect to the central portion of the radial pedicle-shaped projection. The cuff is formed by connecting the cuffs in the longitudinal direction of the forearm, and the dimension between the surface on the wrist surface side and the surface on the side opposite to the wrist of the central cuff in the mounted state is formed smaller than the side cuff. The cuff for a sphygmomanometer according to claim 1, characterized in that:
るシート材の厚みを、橈骨茎状突起部の中央部の略直上
に配置される部分の方が、橈骨茎状突起部の中央部に対
する前腕長手方向の両端側にそれぞれ配置される部分よ
りも厚くなるように形成して成ることを特徴とする請求
項１に記載の血圧計用カフ。5. The thickness of the sheet material constituting the exterior of the cuff on the wrist surface side is such that the portion disposed substantially immediately above the central portion of the radial stalk-like projection has a thickness with respect to the central portion of the radial stalk-like projection. The cuff for a sphygmomanometer according to claim 1, wherein the cuff is formed so as to be thicker than portions arranged at both ends in the longitudinal direction of the forearm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000393680A JP3636071B2 (en) | 2000-12-25 | 2000-12-25 | Sphygmomanometer cuff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000393680A JP3636071B2 (en) | 2000-12-25 | 2000-12-25 | Sphygmomanometer cuff |
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| Publication Number | Publication Date |
|---|---|
| JP2002191567A true JP2002191567A (en) | 2002-07-09 |
| JP3636071B2 JP3636071B2 (en) | 2005-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2000393680A Expired - Fee Related JP3636071B2 (en) | 2000-12-25 | 2000-12-25 | Sphygmomanometer cuff |
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| JP (1) | JP3636071B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182732B2 (en) | 2003-01-15 | 2007-02-27 | Omron Healthcare Co., Ltd. | Blood pressure meter cuff |
| US8814803B2 (en) | 2007-01-19 | 2014-08-26 | Samsung Electronics Co., Ltd. | Portable device for measuring user's biosignals and the method thereof |
| JP2017184998A (en) * | 2016-04-05 | 2017-10-12 | オムロンヘルスケア株式会社 | Pulse wave detection device and biological information measurement device |
| WO2018124071A1 (en) * | 2016-12-27 | 2018-07-05 | オムロン株式会社 | Pouch-form structure, method for producing same, cuff, and blood pressure meter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105147261B (en) * | 2015-08-03 | 2018-06-26 | 刘垚 | A kind of method of traditional Chinese pulse-diagnosis instrument and its positioning cun,guan,chi pulse point |
-
2000
- 2000-12-25 JP JP2000393680A patent/JP3636071B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182732B2 (en) | 2003-01-15 | 2007-02-27 | Omron Healthcare Co., Ltd. | Blood pressure meter cuff |
| US8814803B2 (en) | 2007-01-19 | 2014-08-26 | Samsung Electronics Co., Ltd. | Portable device for measuring user's biosignals and the method thereof |
| JP2017184998A (en) * | 2016-04-05 | 2017-10-12 | オムロンヘルスケア株式会社 | Pulse wave detection device and biological information measurement device |
| US11147512B2 (en) | 2016-04-05 | 2021-10-19 | Omron Healthcare Co., Ltd. | Pulse wave detection device and biometric information measurement device |
| WO2018124071A1 (en) * | 2016-12-27 | 2018-07-05 | オムロン株式会社 | Pouch-form structure, method for producing same, cuff, and blood pressure meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3636071B2 (en) | 2005-04-06 |
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