JP2006102166A

JP2006102166A - Hemadynamometer

Info

Publication number: JP2006102166A
Application number: JP2004293255A
Authority: JP
Inventors: Kimihisa Aihara; 公久相原; Junichi Shimada; 純一嶋田; Shinji Mino; 真司美野; Hiroshi Koizumi; 弘小泉; Shoichi Hayashida; 尚一林田; Naoyoshi Tatara; 尚愛多々良; Taisuke Oguchi; 泰介小口; Yoshiyuki Haniyu; 能行羽生; Koji Hagi; 浩司萩; Hitoshi Ozawa; 仁小澤
Original assignee: Terumo Corp; Nippon Telegraph and Telephone Corp
Current assignee: Terumo Corp; Nippon Telegraph and Telephone Corp
Priority date: 2004-10-06
Filing date: 2004-10-06
Publication date: 2006-04-20

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hemadynamometer capable of measuring a pulse wave in an area where the pressurized part of a subject becomes the same pressure when pressurizing the subject with a pressurizing face thereby precisely measuring a blood pressure. <P>SOLUTION: The hemadynamometer according to the present invention has the pressurizing section pressurizing the subject with the pressurizing face, a light receiving element detecting the light scattered by or penetrating through the subject of the light irradiating the subject. The light receiving element is arranged at the position vertical relative to the pressurizing face from the maximum pressurizing point where the pressurizing force of the pressurizing face at the time of pressurizing the subject becomes maximum. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、被検体を圧迫して、光電脈波により血圧を測定する血圧計に関する。 The present invention relates to a sphygmomanometer that compresses a subject and measures blood pressure using a photoelectric pulse wave.

高齢化が進み、成人の生活習慣病への対応が社会的に大きな課題となっている。特に高血圧に関連する疾患の場合、長期の血圧データの収集が非常に重要である点が認識されている。このような観点から、血圧をはじめとした各種の生体情報の計測装置が開発されている。 With the aging of society, dealing with adult lifestyle-related diseases has become a major social issue. It is recognized that long-term blood pressure data collection is very important, especially for diseases related to high blood pressure. From this point of view, various biological information measuring devices including blood pressure have been developed.

従来、外耳部で生体情報を計測する装置については、外耳道に挿入され、常時装着する患者モニタ装置がある（例えば、特許文献１参照。）。これは、脈拍、脈波、心電、体温、動脈血酸素飽和度、及び血圧などを生体内へ放射した赤外光、可視光の散乱光の受光量から計算できるとしている。 Conventionally, there is a patient monitor device that is inserted into the external auditory canal and is always worn as a device that measures biological information at the external ear (see, for example, Patent Document 1). This can be calculated from the amount of received light of the scattered light of infrared light and visible light that radiates the pulse, pulse wave, electrocardiogram, body temperature, arterial blood oxygen saturation, blood pressure, etc. into the living body.

また、外耳道に装着する装置としては、無線通信手段を有し、動脈血酸素飽和濃度センサ、体温センサ、心電センサ、脈波センサを備えている緊急情報装置がある（例えば、特許文献２参照。）。 Moreover, as an apparatus to be mounted on the ear canal, there is an emergency information apparatus that includes wireless communication means and includes an arterial blood oxygen saturation sensor, a body temperature sensor, an electrocardiogram sensor, and a pulse wave sensor (see, for example, Patent Document 2). ).

一方、血圧の測定に関しては、光による血管の脈動波形による血圧測定装置は、他の方式であるカフ振動法や容積補償法などによる血圧測定装置（例えば、非特許文献１参照。）と並んで、有力な血圧の測定方法として認められている。なお、本明細書において、外耳の名称は非特許文献２、３による。 On the other hand, regarding blood pressure measurement, a blood pressure measurement device based on a pulsation waveform of a blood vessel by light is aligned with a blood pressure measurement device using another method such as a cuff vibration method or a volume compensation method (for example, see Non-Patent Document 1). It is recognized as a powerful blood pressure measurement method. In the present specification, the names of the outer ears are based on Non-Patent Documents 2 and 3.

特開平９−１２２０８３号公報JP-A-9-128203 特開平１１−１２８１７４号公報JP-A-11-128174 山越憲一、戸川達男著、「生体センサと計測装置」、日本エム・イー学会編／ＭＥ教科書シリーズＡ−１、３９頁〜５２頁Kenichi Yamakoshi, Tatsuo Togawa, “Biosensor and Measuring Device”, MM Japan Society / ME textbook series A-1, pages 39-52 Ｓｏｂｏｔｔａ図説人体解剖学第１巻（監訳者：岡本道雄）、ｐ．１２６、（株）医学書院、１９９６年１０月１日発行Sobotta Illustrated Human Anatomy Volume 1 (Translation by Michio Okamoto), p. 126, Medical School, issued October 1, 1996 からだの地図帳（ＴｈｅＡｔｌａｓｏｆＨｕｍａｎＢｏｄｙ）、ｐ．２０、（株）講談社、２００４年１月２９日第３５刷発行The Atlas of Human Body, p. 20, Kodansha Co., Ltd., published on January 29, 2004, 35th edition

本発明者らは、これらの研究開発において、外耳の耳珠等の比較的小さい生体の部位においても血圧を測定できる血圧計として、生体の一部を圧迫面により圧迫し、生体の加圧部分の脈波を光により検知して血圧を計る血圧計の開発に取り組んでいる。 In these research and development, the present inventors, as a sphygmomanometer capable of measuring blood pressure even in a relatively small living body part such as the tragus of the outer ear, presses a part of the living body with a pressing surface, and pressurizes the living body. We are working on the development of a sphygmomanometer that measures the blood pressure by detecting the pulse wave of light.

しかし、生体を圧迫面により圧迫する場合、生体を圧迫したときに、圧迫面の押圧力に圧力分布が生じる。そして、圧迫面上での押圧力の勾配が急な部分の脈波を測定すると、異なる押圧力で圧迫している部分の脈波を検出することになり、脈波を精度よく測定することができないという問題がある。 However, when the living body is compressed by the compression surface, a pressure distribution is generated in the pressing force of the compression surface when the living body is compressed. And if the pulse wave of the part where the pressure force gradient on the compression surface is steep is measured, the pulse wave of the part compressed with different pressure force will be detected, and the pulse wave can be measured accurately. There is a problem that you can not.

そこで、本発明は、圧迫面により被検体を圧迫したときに、被検体の加圧部分が等圧となる領域の脈波を計測することが可能で、高精度な血圧測定を可能とする血圧計を提供することを目的とする。 Therefore, the present invention is capable of measuring a pulse wave in a region where the pressurized portion of the subject becomes equal pressure when the subject is compressed by the compression surface, and enables blood pressure measurement with high accuracy. The purpose is to provide a total.

上記課題を解決するために、本発明者らは、圧迫面により被検体を圧迫したときに、圧迫面の押圧力が最大となる領域では、圧力勾配が緩やかであることを見出して、本発明を完成させた。 In order to solve the above problems, the present inventors have found that the pressure gradient is gentle in a region where the pressing force of the compression surface is maximum when the subject is compressed by the compression surface. Was completed.

具体的には、本発明に係る血圧計は、被検体を圧迫面により圧迫する加圧部と、前記被検体に照射された光のうち前記被検体で散乱又は前記被検体を透過した光を検出する受光素子と、を備える血圧計であって、前記受光素子は、前記被検体を圧迫するときの前記圧迫面の押圧力が最大となる最大加圧点から前記圧迫面に対して垂直な位置に配置されていることを特徴とする。 Specifically, a sphygmomanometer according to the present invention includes a pressurizing unit that compresses a subject with a compression surface, and light that is scattered by the subject or transmitted through the subject out of the light irradiated on the subject. A light-receiving device for detecting, wherein the light-receiving device is perpendicular to the compression surface from a maximum pressure point at which a pressing force of the compression surface becomes maximum when the subject is compressed. It is arranged at a position.

受光素子を最大加圧点から圧迫面に対して垂直な位置に配置することにより、被検体が等圧で押圧された領域での散乱光又は被検体が等圧で押圧された領域からの透過光を受光素子によって受光して、生体の加圧部分が等圧となる領域の脈波を計測することが可能となる。そのため、高精度な血圧測定を可能とする。 By disposing the light receiving element at a position perpendicular to the pressing surface from the maximum pressure point, scattered light in a region where the subject is pressed with an equal pressure or transmission from a region where the subject is pressed with an equal pressure Light can be received by the light receiving element, and the pulse wave in the region where the pressurized portion of the living body becomes equal pressure can be measured. Therefore, highly accurate blood pressure measurement is possible.

上記の血圧計において、少なくとも前記圧迫面の前記最大加圧点付近が透光性の材料で形成され、前記受光素子は、前記加圧部の内部に配置されていることが望ましい。 In the above sphygmomanometer, it is preferable that at least the vicinity of the maximum pressurization point of the compression surface is formed of a translucent material, and the light receiving element is disposed inside the pressurization unit.

最大加圧点付近を透光性の材料で形成することで、受光素子の受光量を確保することができる。また、受光素子を加圧部の内部に配置することで、加圧部の組み立てを簡単とすることができる。 The amount of light received by the light receiving element can be ensured by forming the vicinity of the maximum pressure point with a translucent material. Moreover, the assembly of the pressurizing unit can be simplified by arranging the light receiving element inside the pressurizing unit.

また、上記の血圧計において、少なくとも前記圧迫面の前記最大加圧点付近が透光性の材料で形成され、前記受光素子は、前記圧迫面の内部表面に配置されていることが望ましい。 In the sphygmomanometer, it is desirable that at least the vicinity of the maximum pressurization point of the compression surface is formed of a translucent material, and the light receiving element is disposed on the inner surface of the compression surface.

最大加圧点付近を透光性の材料で形成することで、受光素子は、被検体での散乱光又は被検体からの透過光を直接受光することができる。さらに、血圧測定時には被検体と圧迫面とが密着しているため、外部からのノイズの混入を減少させることができ、受光素子の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 By forming the vicinity of the maximum pressure point with a light-transmitting material, the light receiving element can directly receive the scattered light from the subject or the transmitted light from the subject. Furthermore, since the subject and the pressing surface are in close contact with each other during blood pressure measurement, external noise can be reduced and the light receiving efficiency of the light receiving element can be improved. As a result, highly accurate blood pressure measurement is possible.

また、上記の血圧計において、前記受光素子は、前記圧迫面の外部表面に配置されていることが望ましい。 In the sphygmomanometer, it is preferable that the light receiving element is disposed on an outer surface of the compression surface.

受光素子を圧迫面の外部表面に配置することで、受光素子は、被検体での散乱光又は被検体からの透過光を直接受光することができる。また、血圧測定時には被検体と受光素子とが密着しているため、外部からのノイズの混入を防ぐことができ、受光素子の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 By disposing the light receiving element on the outer surface of the compression surface, the light receiving element can directly receive scattered light from the subject or transmitted light from the subject. In addition, since the subject and the light receiving element are in close contact with each other during blood pressure measurement, it is possible to prevent external noise from being mixed and to improve the light receiving efficiency of the light receiving element. As a result, highly accurate blood pressure measurement is possible.

一方、発明者らは、圧迫面の押圧力が最大になるのは圧迫面の中央であることから、圧迫面の中央では、圧力勾配が緩やかであることを見出した。 On the other hand, the inventors found that the pressure gradient is gentle at the center of the pressing surface because the pressing force on the pressing surface is maximum at the center of the pressing surface.

具体的には、本発明に係る血圧計は、被検体を圧迫面により圧迫する加圧部と、前記被検体に照射された光のうち前記被検体で散乱又は前記被検体を透過した光を検出する受光素子と、を備える血圧計であって、前記受光素子は、前記圧迫面の中央から前記圧迫面に対して垂直な位置に配置されていることを特徴とする。 Specifically, a sphygmomanometer according to the present invention includes a pressurizing unit that compresses a subject with a compression surface, and light that is scattered by the subject or transmitted through the subject out of the light irradiated on the subject. And a light receiving device for detecting the light receiving device, wherein the light receiving device is disposed at a position perpendicular to the compression surface from a center of the compression surface.

受光素子を圧迫面の中央から圧迫面に対して垂直な位置に配置することにより、被検体が等圧で押圧された領域での散乱光又は被検体が等圧で押圧された領域からの透過光を受光素子によって受光して、生体の加圧部分が等圧となる領域の脈波を計測することが可能となる。そのため、高精度な血圧測定を可能とする。 By disposing the light receiving element at a position perpendicular to the compression surface from the center of the compression surface, scattered light in a region where the subject is pressed with equal pressure or transmission from a region where the subject is pressed with equal pressure Light can be received by the light receiving element, and the pulse wave in the region where the pressurized portion of the living body becomes equal pressure can be measured. Therefore, highly accurate blood pressure measurement is possible.

上記の血圧計において、少なくとも前記圧迫面の前記中央の付近が透光性の材料で形成され、前記受光素子は、前記加圧部の内部に配置されていることが望ましい。 In the above sphygmomanometer, it is desirable that at least the vicinity of the center of the compression surface is formed of a translucent material, and the light receiving element is disposed inside the pressurizing unit.

圧迫面の中央付近を透光性の材料で形成することで、受光素子の受光量を確保することができる。また、受光素子を加圧部の内部に配置することで加圧部の組み立てを簡単とすることができる。 The amount of light received by the light receiving element can be ensured by forming the vicinity of the center of the pressing surface with a translucent material. Moreover, the assembly of the pressurizing unit can be simplified by arranging the light receiving element inside the pressurizing unit.

また、上記の血圧計において、少なくとも前記圧迫面の前記中央の付近が透光性の材料で形成され、前記受光素子は、前記圧迫面の内部表面に配置されていることが望ましい。 In the above sphygmomanometer, it is preferable that at least the vicinity of the center of the compression surface is formed of a translucent material, and the light receiving element is disposed on an inner surface of the compression surface.

圧迫面の中央付近を透光性の材料で形成することで、受光素子は、被検体での散乱光又は被検体からの透過光を直接受光することができる。さらに、血圧測定時には被検体と圧迫面とが密着しているため、外部からのノイズの混入を減少させることができ、受光素子の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 By forming the vicinity of the center of the compression surface with a translucent material, the light receiving element can directly receive the scattered light from the subject or the transmitted light from the subject. Furthermore, since the subject and the pressing surface are in close contact with each other during blood pressure measurement, external noise can be reduced and the light receiving efficiency of the light receiving element can be improved. As a result, highly accurate blood pressure measurement is possible.

また、上記の血圧計において、前記被検体に光を照射する発光素子をさらに備え、前記受光素子は、前記発光素子から照射された光のうち前記被検体で散乱又は前記被検体を透過した光を検出することが望ましい。 The sphygmomanometer may further include a light emitting element that irradiates the subject with light, and the light receiving element may be light scattered from the subject or transmitted through the subject out of the light emitted from the light emitting element. It is desirable to detect.

発光素子及び受光素子を血圧計として一体化することで、血圧計としての利便性がよい。そして、発光素子と受光素子とで、反射型脈波検出系又は透過型脈波検出系を形成し、検出した脈波と加圧部の押圧力から、血圧を測定することができる。 By integrating the light emitting element and the light receiving element as a sphygmomanometer, convenience as a sphygmomanometer is good. The light emitting element and the light receiving element form a reflection type pulse wave detection system or a transmission type pulse wave detection system, and blood pressure can be measured from the detected pulse wave and the pressing force of the pressurizing unit.

また、上記の血圧計において、前記血圧計は前記被検体としての生体の外耳及び／又はその周辺に装着され、前記発光素子は、前記外耳の一部に光を照射することが望ましい。より望ましくは、前記血圧計は前記被検体としての生体の外耳道及び／又は耳介に装着され、前記発光素子は、前記生体の外耳道及び／又は耳介の一部に光を照射することであり、さらに望ましくは、前記血圧計は前記被検体としての生体の耳珠及び／又はその周辺に装着され、前記発光素子は、前記生体の耳珠及び／又はその周辺の一部に光を照射することである。 In the above sphygmomanometer, it is desirable that the sphygmomanometer is attached to and / or around the outer ear of a living body as the subject, and the light emitting element irradiates a part of the outer ear. More preferably, the sphygmomanometer is attached to the external auditory canal and / or pinna of the living body as the subject, and the light emitting element irradiates light to the external ear canal and / or pinna of the living body. More preferably, the sphygmomanometer is attached to the tragus of the living body as the subject and / or the periphery thereof, and the light emitting element irradiates light to the tragus of the living body and / or a part of the periphery thereof. That is.

また、上記の血圧計において、前記血圧計は前記被検体としての生体の外耳及び／又はその周辺に装着され、前記受光素子は、前記生体の外耳及び／又はその周辺の一部に照射された光のうち前記生体の外耳及び／又はその周辺の一部で散乱又は前記外耳の一部を透過した光を検出することが望ましい。より望ましくは、前記血圧計は前記被検体としての生体の外耳道及び／又は耳介に装着され、前記受光素子は、前記生体の外耳道及び／又は耳介の一部に照射された光のうち前記生体の外耳道及び／又は耳介の一部で散乱又は前記生体の外耳道及び／又は耳介の一部を透過した光を検出することであり、さらに望ましくは、前記血圧計は前記被検体としての生体の耳珠及び／又はその周辺に装着され、前記受光素子は、前記生体の耳珠及び／又はその周辺の一部に照射された光のうち前記生体の耳珠及び／又はその周辺の一部で散乱又は前記生体の耳珠及び／又はその周辺の一部を透過した光を検出することである。 In the above sphygmomanometer, the sphygmomanometer is attached to the outer ear of the living body as the subject and / or the periphery thereof, and the light receiving element is irradiated to a part of the outer ear of the living body and / or the periphery thereof. It is desirable to detect light that is scattered or transmitted through a part of the outer ear of the living body and / or a part of the periphery of the living body. More preferably, the sphygmomanometer is attached to the external auditory canal and / or pinna of the living body as the subject, and the light receiving element is the light among the light irradiated to a part of the external auditory canal and / or pinna of the living body. Detecting light scattered or transmitted through a part of the external auditory canal and / or pinna of the living body, and more preferably, the sphygmomanometer as the subject The light receiving element is attached to a living tragus and / or its periphery, and the light receiving element is one of the living tragus and / or one of its surroundings out of light irradiated to a part of the living tragus and / or its periphery. It is to detect light scattered at a portion or transmitted through a part of the tragus and / or the periphery of the living organism.

血圧計を小型で生体の外耳及び／又はその周辺等の部位に装着することにより、日常生活において連続的に、かつ人体の移動などによる雑音の影響を受けることなく血圧を測定できる。そして、発光素子と受光素子とで、反射型脈波検出系又は透過型脈波検出系を形成し、検出した脈波と加圧部の押圧力から、血圧を測定することができる。 By attaching the sphygmomanometer to a small body such as the outer ear and / or its surroundings, blood pressure can be measured continuously in daily life and without being affected by noise due to movement of the human body. The light emitting element and the light receiving element form a reflection type pulse wave detection system or a transmission type pulse wave detection system, and blood pressure can be measured from the detected pulse wave and the pressing force of the pressurizing unit.

本発明に係る血圧計では、圧迫面により被検体を圧迫したときに、被検体の加圧部分が等圧となる領域の脈波を計測することが可能で、高精度な血圧測定を可能とする。 With the sphygmomanometer according to the present invention, it is possible to measure a pulse wave in a region where the pressurized portion of the subject becomes equal pressure when the subject is compressed by the compression surface, and high-precision blood pressure measurement is possible. To do.

以下、本発明について、実施形態を示して詳細に説明するが、本発明は、以下の実施形態に制限されるものではない。なお、添付の図面には、電気・電子回路、機械部品等の血圧計を駆動するためのものは記載していない。 Hereinafter, the present invention will be described in detail with reference to embodiments, but the present invention is not limited to the following embodiments. The attached drawings do not describe devices for driving a blood pressure monitor such as an electric / electronic circuit or a machine part.

（第１実施形態）
図１は本実施形態に係る血圧計を被検体としての生体に装着した場合の概略図を示す。 (First embodiment)
FIG. 1 is a schematic diagram when the blood pressure monitor according to the present embodiment is attached to a living body as a subject.

本実施形態の血圧計６０は、被検体としての生体１０を圧迫面２２により圧迫する加圧部２０と、生体１０に照射された照射光４９のうち生体１０で散乱した散乱光４８又は生体１０を透過した透過光４７を検出する受光素子２５と、を備える。また、上記の他に、血圧計として機能させるために、加圧部２０の内部の圧力を計測する不図示の圧力計を備え、該圧力計と加圧部２０の内部とを接続する圧力伝達パイプ１９を備えている。なお、本実施形態では、加圧部２０の生体１０に対して反対の側及び同じ側から照射光４９ａ、４９ｂが照射されているが、何れか一方を照射することとしてもよい。この場合、照射光４９ｂは生体１０を透過し、透過光４７として受光素子２５により受光され、照射光４９ａは生体１０で散乱し、散乱光４８として受光素子２５により受光されることとなる。 The sphygmomanometer 60 according to the present embodiment includes a pressurizing unit 20 that compresses the living body 10 as a subject with the pressing surface 22, and scattered light 48 or the living body 10 scattered by the living body 10 among the irradiation light 49 irradiated to the living body 10. And a light receiving element 25 that detects the transmitted light 47 that has passed through. In addition to the above, in order to function as a sphygmomanometer, a pressure gauge (not shown) that measures the pressure inside the pressurizing unit 20 is provided, and pressure transmission that connects the pressure gauge and the inside of the pressurizing unit 20 A pipe 19 is provided. In the present embodiment, the irradiation lights 49a and 49b are irradiated from the opposite side and the same side with respect to the living body 10 of the pressurizing unit 20, but either one may be irradiated. In this case, the irradiation light 49 b passes through the living body 10 and is received by the light receiving element 25 as transmitted light 47, and the irradiation light 49 a is scattered by the living body 10 and received by the light receiving element 25 as scattered light 48.

本実施形態では、加圧部２０は、筺体２１と、筺体２１の開放された１の面に形成された圧迫面２２と、筺体２１と圧迫面２２とで囲まれた内部に空気を供給する空気供給パイプ２３と、加圧部２０の内部の圧力を不図示の圧力計に伝達するための圧力伝達パイプ１９と、を有し、空気供給パイプ２３からの空気供給により圧迫面２２がせり出して生体１０を圧迫する。なお、空気供給パイプ２３は、加圧部２０の内部の空気を排気して、せり出した圧迫面２２を元に戻すこともある。また、加圧部２０は、被検体としての生体１０を圧迫面２２により圧迫できれば、空気だけではなく、油圧、水圧等の圧力を適用することもできる。また、例えば、圧迫面２２をピストン構造とし、空気圧、油圧、水圧等の圧力により圧迫面２２を生体１０に対して上下動させて生体１０を圧迫することとしてもよいし、モーターの回転運動を直動運動に変換して圧迫面２２を生体１０に対して上下動させて生体１０を圧迫することとしてもよい。なお、本実施形態では、加圧部２０の側からの押圧のみでは、被検体としての生体１０の圧迫が不十分となる場合があるため、図１に示す受光素子２５の側からも生体１０を圧迫面２２の反対の側から圧迫する支え部２４の反発力４０により同時に押圧して生体１０を圧迫するものとする。 In the present embodiment, the pressurizing unit 20 supplies air to the inside of the housing 21, the compression surface 22 formed on one surface of the housing 21, and the housing 21 and the compression surface 22. An air supply pipe 23, and a pressure transmission pipe 19 for transmitting the pressure inside the pressurizing unit 20 to a pressure gauge (not shown), and the compression surface 22 protrudes by air supply from the air supply pipe 23. The living body 10 is pressed. Note that the air supply pipe 23 may exhaust the air inside the pressurizing unit 20 and return the protruding compression surface 22 to its original state. Further, the pressurizing unit 20 can apply not only air but also pressure such as hydraulic pressure and water pressure as long as the living body 10 as the subject can be compressed by the compression surface 22. Further, for example, the compression surface 22 may have a piston structure, and the compression surface 22 may be moved up and down with respect to the living body 10 by pressure such as air pressure, hydraulic pressure, water pressure, or the like, and the rotation motion of the motor may be changed. It is good also as converting to a linear motion and pressing the living body 10 by moving the compression surface 22 up and down with respect to the living body 10. In the present embodiment, the pressure on the living body 10 as the subject may be insufficient only by pressing from the pressurizing unit 20 side. Therefore, the living body 10 is also viewed from the light receiving element 25 side shown in FIG. Are pressed simultaneously by the repulsive force 40 of the support portion 24 that compresses from the opposite side of the compression surface 22 to compress the living body 10.

圧迫面２２は、被検体としての生体１０を圧迫する。また、圧迫面２２は、透明・半透明・不透明いずれであってもよいが、後述するように、加圧部２０の内部に、加圧部２０の外部に光を出射する発光素子を設けるような場合には、透明又は半透明であることが望ましい。 The compression surface 22 compresses the living body 10 as a subject. The pressing surface 22 may be transparent, translucent, or opaque. However, as will be described later, a light emitting element that emits light to the outside of the pressurizing unit 20 is provided inside the pressurizing unit 20. In such a case, it is desirable to be transparent or translucent.

受光素子２５は、圧迫面２２によって生体１０を圧迫するときに圧迫面２２の押圧力４１が最大となる最大加圧点から圧迫面２２に対して垂直な位置か或いは圧迫面２２の中央から圧迫面２２に対して垂直な位置に配置する。本実施形態では、生体１０を圧迫面２２の反対の側から圧迫する支え部２４に設けている。上記の位置に受光素子２５を配置することで、生体１０が等圧で押圧された領域での散乱光４８又は生体１０が等圧で押圧された領域からの透過光４７を受光素子２５によって受光して、生体１０の加圧部分が等圧となる領域の脈波を計測することが可能となるため高精度な血圧測定を可能とする。 The light receiving element 25 is compressed from a position perpendicular to the compression surface 22 from the maximum pressure point at which the pressing force 41 of the compression surface 22 becomes maximum when the living body 10 is compressed by the compression surface 22 or from the center of the compression surface 22. It is arranged at a position perpendicular to the surface 22. In the present embodiment, the living body 10 is provided on the support portion 24 that compresses the living body 10 from the side opposite to the compression surface 22. By disposing the light receiving element 25 at the above position, the light receiving element 25 receives the scattered light 48 in the area where the living body 10 is pressed with equal pressure or the transmitted light 47 from the area where the living body 10 is pressed with equal pressure. As a result, it is possible to measure a pulse wave in a region where the pressurized portion of the living body 10 is at an equal pressure, thereby enabling highly accurate blood pressure measurement.

ここで、図２に、加圧部により被検体としての生体を圧迫したときの、圧迫面の押圧力を示した概略図を示す。図２（ａ）に、加圧部の圧迫面の側からの上面図を示し、図２（ｂ）に、（ａ）のＡ−Ａ´面における圧迫面の押圧力の曲線を示す。図２（ａ）の圧迫面において、点線は等圧面を示す。 Here, FIG. 2 is a schematic diagram showing the pressing force of the pressing surface when the living body as the subject is pressed by the pressurizing unit. FIG. 2A shows a top view from the side of the pressing surface of the pressurizing unit, and FIG. 2B shows a curve of the pressing force of the pressing surface on the AA ′ plane in FIG. In the compression surface of FIG. 2A, a dotted line indicates an isobaric surface.

本実施形態では、圧迫面２２により被検体を圧迫したときには、図２（ａ）に示すように、等圧面が圧迫面２２の中央４２を中心として圧迫面２２の形状に起因した形状で広がっていく。本実施形態では、圧迫面２２が楕円であるため、圧迫面２２の中央４２を中心として、楕円形状で広がっていくこととなる。圧迫面２２の中央４２付近の押圧力４１が最も高く、周囲になるに従って低くなるためであるが、圧迫面２２が円であっても多角形であっても圧迫面２２の中央４２付近の押圧力４１が最も高く、周囲になるに従って低くなる。 In this embodiment, when the subject is compressed by the compression surface 22, the isobaric surface spreads in a shape resulting from the shape of the compression surface 22 around the center 42 of the compression surface 22 as shown in FIG. Go. In this embodiment, since the compression surface 22 is an ellipse, the compression surface 22 spreads in an elliptical shape with the center 42 of the compression surface 22 as the center. This is because the pressing force 41 in the vicinity of the center 42 of the compression surface 22 is the highest and decreases as it goes around, but the pressing surface 22 in the vicinity of the center 42 of the compression surface 22 is round or polygonal. The pressure 41 is the highest and becomes lower as it becomes ambient.

ここで、圧迫面２２の押圧力４１が最大となる領域の付近では、図２（ｂ）に示すように押圧力４１が等圧となる領域４５を形成し、図１に示す被検体としての生体１０が等圧で圧迫されていることがわかる。このように、圧迫面２２の押圧力４１が最大となる領域又は圧迫面２２の中央４２付近で血圧を測定すると、生体１０での押圧力が等圧となる領域の血圧を測定することとなるため、誤差が少なくなる。 Here, in the vicinity of the region where the pressing force 41 of the compression surface 22 is maximum, a region 45 where the pressing force 41 becomes equal pressure is formed as shown in FIG. It can be seen that the living body 10 is pressed with an equal pressure. As described above, when the blood pressure is measured in the region where the pressing force 41 of the compression surface 22 is maximum or in the vicinity of the center 42 of the compression surface 22, the blood pressure in the region where the pressing force in the living body 10 is equal pressure is measured. Therefore, the error is reduced.

図１に示す受光素子２５は、圧迫面２２の外部表面に配置することが望ましい。ここで、図３に、受光素子が圧迫面の外部表面に配置されている形態を示した概略図を示す。 The light receiving element 25 shown in FIG. 1 is desirably disposed on the outer surface of the compression surface 22. Here, FIG. 3 is a schematic view showing a form in which the light receiving elements are arranged on the outer surface of the compression surface.

本実施形態では、圧迫面２２の外部表面に配置された受光素子２５は、被検体としての生体１０での散乱光４８又は生体１０からの透過光４７を直接受光することができる。また、血圧測定時には生体１０と受光素子２５とが密着しているため、外部からのノイズの混入を防ぐことができ、受光素子２５の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。また、図３では、受光素子２５が圧迫面２２の外部表面に埋め込まれている形態を示しているが、圧迫面２２の外部表面上に配置することとしてもよい。本実施形態のように、受光素子２５の受光面を圧迫面２２に一致させるようにして、受光素子２５を圧迫面２２の外部表面に埋め込むことによって、被検体としての生体１０を圧迫したとき生体１０に受光素子２５が当たることがなく、不快感がない。 In the present embodiment, the light receiving element 25 disposed on the outer surface of the compression surface 22 can directly receive the scattered light 48 from the living body 10 as the subject or the transmitted light 47 from the living body 10. Further, since the living body 10 and the light receiving element 25 are in close contact with each other during blood pressure measurement, external noise can be prevented from being mixed, and the light receiving efficiency of the light receiving element 25 can be improved. As a result, highly accurate blood pressure measurement is possible. 3 shows a form in which the light receiving element 25 is embedded in the outer surface of the compression surface 22, it may be arranged on the outer surface of the compression surface 22. When the living body 10 as a subject is pressed by embedding the light receiving element 25 in the outer surface of the pressing surface 22 so that the light receiving surface of the light receiving element 25 coincides with the pressing surface 22 as in the present embodiment, 10 does not hit the light receiving element 25, and there is no discomfort.

また、受光素子２５を圧迫面２２の押圧力４１の最大となる最大加圧点４３（図２）から圧迫面２２に対して垂直な位置に配置した場合、圧迫面２２の最大加圧点４３付近を透光性の材料で形成することが望ましく、さらに受光素子２５は、加圧部２０の内部に配置することが望ましい。また、受光素子２５を圧迫面２２の中央から圧迫面２２に対して垂直な位置に配置した場合、圧迫面２２の中央付近を透光性の材料で形成することが望ましく、さらに受光素子２５は、加圧部２０の内部に配置することが望ましい。ここで、図４から図７に、受光素子を加圧部の内部に配置した形態を示した概略図を示す。図４は、受光素子を圧迫面の内部表面に配置した形態を示し、図５から図７は、受光素子を筺体の筺底に配置した形態を示している。 Further, when the light receiving element 25 is disposed at a position perpendicular to the compression surface 22 from the maximum pressure point 43 (FIG. 2) at which the pressing force 41 of the compression surface 22 is maximum, the maximum pressure point 43 of the compression surface 22. The vicinity is preferably formed of a light-transmitting material, and the light receiving element 25 is preferably disposed inside the pressure unit 20. In addition, when the light receiving element 25 is disposed at a position perpendicular to the compression surface 22 from the center of the compression surface 22, it is desirable to form the vicinity of the center of the compression surface 22 with a light-transmitting material. It is desirable to arrange in the pressurizing unit 20. Here, FIG. 4 to FIG. 7 are schematic views showing a form in which the light receiving elements are arranged inside the pressurizing unit. FIG. 4 shows a form in which the light receiving element is arranged on the inner surface of the compression surface, and FIGS. 5 to 7 show a form in which the light receiving element is arranged on the bottom of the casing.

図４に示すように圧迫面２２の内部表面に受光素子２５を配置し、所定の部分を透光性の材料で形成された領域３２とすることで、被検体としての生体１０での散乱光４８又は生体１０からの透過光４７を直接受光することができる。また、血圧測定時には生体１０と圧迫面２２とが密着しているため、外部からのノイズの混入を減少させることができ、受光素子２５の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 As shown in FIG. 4, the light receiving element 25 is disposed on the inner surface of the compression surface 22, and a predetermined portion is a region 32 formed of a translucent material, thereby scattering light from the living body 10 as a subject. 48 or transmitted light 47 from the living body 10 can be directly received. In addition, since the living body 10 and the compression surface 22 are in close contact with each other during blood pressure measurement, external noise can be reduced and the light receiving efficiency of the light receiving element 25 can be improved. As a result, highly accurate blood pressure measurement is possible.

また、図５に示すように所定の部分を透光性の材料で形成された領域３２とすることで、受光素子２５の受光量を確保することができる。また、筺体２１の筺底に受光素子２５を配置することで、受光素子２５への回路配線等を筺体２１に取り付けることができるため、加圧部２０の組み立てを簡単とすることができる。 In addition, as shown in FIG. 5, by setting a predetermined portion as a region 32 formed of a translucent material, the amount of light received by the light receiving element 25 can be ensured. In addition, by arranging the light receiving element 25 on the bottom of the casing 21, circuit wiring or the like to the light receiving element 25 can be attached to the casing 21, so that the assembly of the pressure unit 20 can be simplified.

また、図６に示すように、筺体２１の筺底に受光素子２５を配置した場合、受光素子２５を囲むように隔壁３３を設けてもよい。受光素子２５の感度は、受光面に対して垂直に入射する光に対して最も良好である。そのため、筺体２１の内部で反射した反射光等の受光素子２５に対して斜めに入射する光を隔壁３３により遮光することで、受光素子２５の出力する電気信号を増幅したときに、透光性の材料で形成された領域３２から受光素子２５に対して垂直に入射した光に対するノイズ成分の影響を減少させることができる。その結果、高精度の血圧測定を可能とする。 As shown in FIG. 6, when the light receiving element 25 is arranged on the bottom of the casing 21, a partition wall 33 may be provided so as to surround the light receiving element 25. The sensitivity of the light receiving element 25 is the best for light incident perpendicularly to the light receiving surface. For this reason, light that is obliquely incident on the light receiving element 25 such as reflected light reflected inside the housing 21 is shielded by the partition wall 33 so that the electrical signal output from the light receiving element 25 is amplified. The influence of the noise component on the light perpendicularly incident on the light receiving element 25 from the region 32 formed of the above material can be reduced. As a result, highly accurate blood pressure measurement is possible.

また、図７に示すように、受光素子２５と圧迫面２２との間にレンズ３４を設けて、生体１０での散乱光４８又は生体１０からの透過光４７を受光素子２５に集光させることとしてもよい。受光素子２５の感度は、受光面に対して垂直に入射する光に対して最も良好である。そのため、透光性の材料で形成された領域３２に対して垂直に入射する光を集光して受光素子２５に受光させることができる。従って、受光素子２５の出力する電気信号を増幅したときに、受光素子２５に対して垂直に入射した光に対するノイズ成分の影響を減少させることができる。その結果、高精度の血圧測定を可能とする。また、図６に示す隔壁３３と図７に示すレンズ３４とを組み合わせて適用してもよい。この場合、レンズ３４によって透光性の材料で形成された領域３２に対して垂直に入射する光を集光できることに加え、図６に示す隔壁３３によって筺体２１の内部で反射した反射光等の受光素子２５に対して斜めに入射する光を遮光できるため、ノイズ除去の効果をさらに向上させることができる。また、図６及び図７で示した形態の血圧計と同様のノイズ除去効果を得るために、透光性の材料で形成された領域３２自体を小さくして、散乱光４８又は透過光４７を絞ることとしてもよい。 Further, as shown in FIG. 7, a lens 34 is provided between the light receiving element 25 and the compression surface 22, and the scattered light 48 from the living body 10 or the transmitted light 47 from the living body 10 is condensed on the light receiving element 25. It is good. The sensitivity of the light receiving element 25 is the best for light incident perpendicularly to the light receiving surface. Therefore, the light incident perpendicularly to the region 32 formed of a light-transmitting material can be collected and received by the light receiving element 25. Therefore, when the electric signal output from the light receiving element 25 is amplified, it is possible to reduce the influence of the noise component on the light incident perpendicularly to the light receiving element 25. As a result, highly accurate blood pressure measurement is possible. Further, the partition wall 33 shown in FIG. 6 and the lens 34 shown in FIG. 7 may be applied in combination. In this case, in addition to being able to collect light perpendicularly incident on the region 32 formed of a translucent material by the lens 34, the reflected light or the like reflected inside the housing 21 by the partition wall 33 shown in FIG. Since the light incident obliquely on the light receiving element 25 can be shielded, the noise removal effect can be further improved. In addition, in order to obtain the same noise removal effect as that of the sphygmomanometer of the form shown in FIGS. 6 and 7, the region 32 itself made of a translucent material is made small so that the scattered light 48 or the transmitted light 47 is reduced. It may be narrowed down.

なお、図４及び図５において、受光素子２５の受光感度は、受光面に対して垂直に入射する光に対して最も良好であるため、圧迫面２２のうち透光性の材料で形成された領域３２は、該領域３２から垂直に入射した光が受光素子２５の受光面に当たる大きさ・位置に形成することが望ましい。 4 and 5, the light receiving sensitivity of the light receiving element 25 is the best for light incident perpendicularly to the light receiving surface, and thus the light receiving element 25 is formed of a light-transmitting material on the pressing surface 22. The region 32 is preferably formed at a size and position where light vertically incident from the region 32 hits the light receiving surface of the light receiving element 25.

ここで、図１を参照して、本実施形態に係る血圧計の血圧測定方法について説明する。 Here, with reference to FIG. 1, the blood pressure measuring method of the sphygmomanometer according to the present embodiment will be described.

血圧測定の前に、被検体としての生体１０に、加圧部２０及び支え部２４が接するようにして血圧計６０を装着する。そして、血圧測定を開始する。まず、空気供給パイプ２３により空気を供給し、加圧部２０の内部の圧力を上昇させて圧迫面２２をせり出させる。生体１０は、支え部２４により圧迫面２２の反対の側からも押圧されているために、圧迫面２２の押圧力４１と支え部２４の反発力４０とによって圧迫される。押圧力４１をさらに上昇させると、生体１０の内部の血流が停止する。この段階で生体１０に向けて照射光４９ａを照射する。照射光４９ａは生体１０内の血管あるいは血管の中の血球により散乱され、散乱光４８が受光素子２５によって受光される。 Prior to blood pressure measurement, the sphygmomanometer 60 is attached so that the pressurizing unit 20 and the support unit 24 are in contact with the living body 10 as the subject. Then, blood pressure measurement is started. First, air is supplied through the air supply pipe 23, and the pressure inside the pressurizing unit 20 is increased to protrude the compression surface 22. Since the living body 10 is pressed from the opposite side of the pressing surface 22 by the support portion 24, the living body 10 is pressed by the pressing force 41 of the pressing surface 22 and the repulsive force 40 of the supporting portion 24. When the pressing force 41 is further increased, the blood flow inside the living body 10 stops. At this stage, the irradiation light 49a is irradiated toward the living body 10. The irradiation light 49 a is scattered by a blood vessel in the living body 10 or a blood cell in the blood vessel, and the scattered light 48 is received by the light receiving element 25.

次に、空気供給パイプ２３から空気を排出して押圧力４１を徐々に低下させる。ここで、押圧力４１が一定値を下回ると、生体１０内の血管あるいは血管の中の血球は心臓の鼓動に応じて脈動を開始する。散乱光４８はこの脈動に対応した強度の変化あるいはドップラー効果による光周波数の変化を受けて受光素子２５により受光される。従って、受光素子２５により受光された散乱光４８を光電気変換することにより、血管あるいは血管の中の血球の脈動に対応する脈波が検出される。脈波を検出する過程において、加圧部２０の内部の圧力を圧力伝達パイプ１９によって不図示の圧力計に伝達し、該圧力計によって加圧部２０の内部の圧力をモニタする。そして脈波の変化と加圧部２０の押圧力４１との関係により血圧を計測することができる。なお、この検出系を反射型脈波検出系と呼ぶこととする。 Next, air is discharged from the air supply pipe 23 to gradually reduce the pressing force 41. Here, when the pressing force 41 falls below a certain value, the blood vessel in the living body 10 or the blood cell in the blood vessel starts to pulsate according to the heartbeat. The scattered light 48 is received by the light receiving element 25 in response to a change in intensity corresponding to this pulsation or a change in optical frequency due to the Doppler effect. Therefore, by performing photoelectric conversion on the scattered light 48 received by the light receiving element 25, a pulse wave corresponding to the pulsation of a blood vessel or a blood cell in the blood vessel is detected. In the process of detecting the pulse wave, the pressure inside the pressurizing unit 20 is transmitted to a pressure gauge (not shown) by the pressure transmission pipe 19, and the pressure inside the pressurizing unit 20 is monitored by the pressure gauge. The blood pressure can be measured by the relationship between the change of the pulse wave and the pressing force 41 of the pressurizing unit 20. This detection system is called a reflection type pulse wave detection system.

一方、加圧部２０の圧力を上昇させ、生体１０の内部の血流が停止した段階で、受光素子２５の生体１０に対して反対の側から生体１０に向けて照射光４９ｂを照射することとしてもよい。この場合、照射光４９ｂは生体１０内の血管あるいは血管の中の血球により散乱して生体１０を透過した透過光４７が受光素子２５によって受光される。 On the other hand, when the pressure of the pressurizing unit 20 is increased and the blood flow inside the living body 10 is stopped, the irradiation light 49b is irradiated toward the living body 10 from the opposite side to the living body 10 of the light receiving element 25. It is good. In this case, the irradiated light 49 b is scattered by a blood vessel in the living body 10 or a blood cell in the blood vessel, and transmitted light 47 transmitted through the living body 10 is received by the light receiving element 25.

そして、空気供給パイプ２３から空気を排出して押圧力４１を徐々に低下させる。ここで、押圧力４１が一定値を下回ると、生体１０内の血管あるいは血管の中の血球は心臓の鼓動に応じて脈動を開始する。透過光４７はこの脈動に対応した強度の変化あるいはドップラー効果による光周波数の変化を受けて受光素子２５により受光される。従って、受光素子２５により受光された透過光４７を光電気変換することにより、血管あるいは血管の中の血球の脈動に対応する脈波が検出される。脈波を検出する過程において、加圧部２０の内部の圧力を圧力伝達パイプ１９によって不図示の圧力計に伝達し、該圧力計によって加圧部２０の内部の圧力をモニタする。そして脈波の変化と加圧部２０の押圧力４１との関係により血圧を計測することができる。なお、この検出系を透過型脈波検出系と呼ぶこととする。 Then, air is discharged from the air supply pipe 23 to gradually reduce the pressing force 41. Here, when the pressing force 41 falls below a certain value, the blood vessel in the living body 10 or the blood cell in the blood vessel starts to pulsate according to the heartbeat. The transmitted light 47 is received by the light receiving element 25 in response to a change in intensity corresponding to this pulsation or a change in optical frequency due to the Doppler effect. Therefore, the pulse wave corresponding to the pulsation of the blood vessel or the blood cell in the blood vessel is detected by photoelectrically converting the transmitted light 47 received by the light receiving element 25. In the process of detecting the pulse wave, the pressure inside the pressurizing unit 20 is transmitted to a pressure gauge (not shown) by the pressure transmission pipe 19, and the pressure inside the pressurizing unit 20 is monitored by the pressure gauge. The blood pressure can be measured by the relationship between the change of the pulse wave and the pressing force 41 of the pressurizing unit 20. This detection system is called a transmission type pulse wave detection system.

上記のように、本実施形態の血圧計６０は反射型或いは透過型のいずれの場合でも脈波を検出可能であり、従来の血管あるいは血液の脈動を音響的に検出する場合に比べて、高精度に脈波を検出することができる。 As described above, the sphygmomanometer 60 according to the present embodiment can detect a pulse wave in either a reflection type or a transmission type, and is higher in comparison with the conventional case in which blood vessels or blood pulsations are detected acoustically. Pulse waves can be detected with high accuracy.

（第２実施形態）
図８に、本実施形態に係る血圧計の概略構成図を示す。本実施形態に係る血圧計６６では、第１実施形態で説明した血圧計に、被検体としての生体１０に光を照射する発光素子２６をさらに備え、受光素子２５は、発光素子２６から照射された照射光５１のうち生体１０で散乱した散乱光４８を検出する。図８に示す形態では、発光素子２６及び受光素子２５を筺体２１の筺底に配置した形態を示している。図８に示すように、発光素子２６及び受光素子２５を血圧計６６として一体化することで、血圧計としての利便性がよい。また、本実施形態では、発光素子２６及び受光素子２５を筺体２１の筺底に配置しているため、例えば加圧部２０を指に装着することで指が支え部となるため、血圧測定が可能な生体１０のいかなる部位においても血圧測定を可能とする。なお、本実施形態では、発光素子２６及び受光素子２５を加圧部２０の内部に設けているが、発光素子２６及び受光素子２５を共に支え部２４に設けても本実施形態に含まれる。 (Second Embodiment)
FIG. 8 shows a schematic configuration diagram of a sphygmomanometer according to the present embodiment. In the sphygmomanometer 66 according to the present embodiment, the sphygmomanometer described in the first embodiment further includes a light emitting element 26 that irradiates light to the living body 10 as a subject, and the light receiving element 25 is irradiated from the light emitting element 26. Of the irradiated light 51, the scattered light 48 scattered by the living body 10 is detected. In the form shown in FIG. 8, a form in which the light emitting element 26 and the light receiving element 25 are arranged on the bottom of the casing 21 is shown. As shown in FIG. 8, the light emitting element 26 and the light receiving element 25 are integrated as a sphygmomanometer 66 so that convenience as a sphygmomanometer is good. In the present embodiment, since the light emitting element 26 and the light receiving element 25 are arranged on the bottom of the casing 21, for example, the finger is used as a support part by attaching the pressurizing part 20 to the finger, so that blood pressure measurement can be performed. The blood pressure can be measured at any possible part of the living body 10. In the present embodiment, the light emitting element 26 and the light receiving element 25 are provided inside the pressurizing unit 20. However, the present embodiment includes both the light emitting element 26 and the light receiving element 25 in the support part 24.

本実施形態に係る血圧計６６による血圧測定方法では、被検体としての生体１０を圧迫するまでの過程は第１実施形態で説明したものと同様である。そして、加圧部２０の内部の発光素子２６と受光素子２５は前述の反射型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定することができる。 In the blood pressure measurement method using the sphygmomanometer 66 according to the present embodiment, the process up to pressing the living body 10 as the subject is the same as that described in the first embodiment. The light emitting element 26 and the light receiving element 25 inside the pressurizing unit 20 form the above-described reflection type pulse wave detection system to detect the pulse wave, and measure the blood pressure from the detected pulse wave according to the above-described principle. be able to.

また、図９に、血圧計の別の形態を示した概略構成図を示す。本実施形態に係る血圧計６７では、第１実施形態で説明した血圧計に、被検体としての生体１０に光を照射する発光素子２６をさらに備え、受光素子２５は、発光素子２６から照射された照射光５１のうち生体１０で散乱した散乱光４８を検出する。図９に示す形態では、発光素子２６及び受光素子２５を圧迫面２２の外部表面に配置した形態を示している。図９に示すように、発光素子２６及び受光素子２５を血圧計６７として一体化することで、血圧計としての利便性がよい。また、本実施形態では、発光素子２６及び受光素子２５を圧迫面２２の外部表面に埋め込むように配置しているため、発光素子２６は、生体１０に照射光５１を直接照射することができ、また、受光素子２５は、生体１０からの散乱光４８を直接受光することができる。また、血圧測定時には生体１０と受光素子２５とが密着しているため、外部からのノイズの混入を防ぐことができ、発光素子２６の照射効率及び受光素子２５の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 FIG. 9 is a schematic configuration diagram showing another embodiment of the sphygmomanometer. In the sphygmomanometer 67 according to the present embodiment, the sphygmomanometer described in the first embodiment further includes a light emitting element 26 that irradiates light to the living body 10 as a subject, and the light receiving element 25 is irradiated from the light emitting element 26. Of the irradiated light 51, the scattered light 48 scattered by the living body 10 is detected. In the form shown in FIG. 9, a form in which the light emitting element 26 and the light receiving element 25 are arranged on the outer surface of the pressing surface 22 is shown. As shown in FIG. 9, the light emitting element 26 and the light receiving element 25 are integrated as a sphygmomanometer 67 so that convenience as a sphygmomanometer is good. Moreover, in this embodiment, since the light emitting element 26 and the light receiving element 25 are arranged so as to be embedded in the outer surface of the compression surface 22, the light emitting element 26 can directly irradiate the living body 10 with the irradiation light 51, The light receiving element 25 can directly receive the scattered light 48 from the living body 10. Moreover, since the living body 10 and the light receiving element 25 are in close contact with each other during blood pressure measurement, external noise can be prevented from being mixed, and the irradiation efficiency of the light emitting element 26 and the light receiving efficiency of the light receiving element 25 can be improved. . As a result, highly accurate blood pressure measurement is possible.

本実施形態に係る血圧計６７による血圧測定方法では、被検体としての生体１０を圧迫するまでの過程は第１実施形態で説明したものと同様である。そして、圧迫面２２の表面の発光素子２６と受光素子２５は前述の反射型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定することができる。 In the blood pressure measurement method using the sphygmomanometer 67 according to the present embodiment, the process up to pressing the living body 10 as the subject is the same as that described in the first embodiment. The light emitting element 26 and the light receiving element 25 on the surface of the compression surface 22 form the above-described reflection type pulse wave detection system to detect the pulse wave, and measure the blood pressure from the detected pulse wave according to the above principle. Can do.

なお、本実施形態では、発光素子２６及び受光素子２５を圧迫面２２に表面に埋め込むように設けているが、発光素子２６及び受光素子２５を圧迫面２２の表面上に配置してもよいし、圧迫面２２の内部表面に設けることとしてもよい。いずれの場合でも発光素子２６と受光素子２５とで反射型脈波検出系を構成することができる。また、発光素子２６は、反射型脈波検出系において、被検体としての生体１０に照射光５１を照射できればよいので、加圧部２０の外部・内部、圧迫面２２の外部表面・内部表面、いずれの位置に設けてもよい。また、図８及び図９に示す形態では、発光素子２６及び受光素子２５を加圧部２０の側に設けているが、発光素子２６及び受光素子２５を支え部２４の側に設けてもよい。この場合も、発光素子２６と受光素子２５とで反射型脈波検出系を構成することができる。 In the present embodiment, the light emitting element 26 and the light receiving element 25 are provided so as to be embedded in the pressing surface 22, but the light emitting element 26 and the light receiving element 25 may be disposed on the surface of the pressing surface 22. Alternatively, it may be provided on the inner surface of the compression surface 22. In any case, the light-emitting element 26 and the light-receiving element 25 can constitute a reflection type pulse wave detection system. Further, since the light emitting element 26 is only required to irradiate the living body 10 as the subject with the irradiation light 51 in the reflection type pulse wave detection system, the outside / inside of the pressurizing unit 20, the outside / inside surface of the compression surface 22, It may be provided at any position. 8 and 9, the light emitting element 26 and the light receiving element 25 are provided on the pressing part 20 side, but the light emitting element 26 and the light receiving element 25 may be provided on the support part 24 side. . Also in this case, the light-emitting element 26 and the light-receiving element 25 can constitute a reflection type pulse wave detection system.

（第３実施形態）
図１０に、本実施形態に係る血圧計の概略構成図を示す。本実施形態に係る血圧計６８では、第１実施形態で説明した血圧計６８に、被検体としての生体１０に光を照射する発光素子２６をさらに備え、受光素子２５は、発光素子２６から照射された照射光５１のうち生体１０を透過した透過光４７を検出する。図１０に示す形態では、受光素子２５を筺体２１の筺底に配置し、発光素子２６を支え部２４に配置した形態を示している。図１０に示すように、発光素子２６及び受光素子２５を血圧計６８として一体化することで、血圧計としての利便性がよい。なお、本実施形態では、発光素子２６を支え部２４に、受光素子２５を加圧部２０の内部に設けているが、発光素子２６と受光素子２５とを逆にして設けることとしても当然に本実施形態に含まれる。 (Third embodiment)
FIG. 10 shows a schematic configuration diagram of a sphygmomanometer according to the present embodiment. In the sphygmomanometer 68 according to the present embodiment, the sphygmomanometer 68 described in the first embodiment further includes a light emitting element 26 that irradiates light to the living body 10 as a subject, and the light receiving element 25 is irradiated from the light emitting element 26. The transmitted light 47 transmitted through the living body 10 is detected from the irradiated light 51. In the form shown in FIG. 10, a form in which the light receiving element 25 is arranged on the bottom of the casing 21 and the light emitting element 26 is arranged on the support portion 24 is shown. As shown in FIG. 10, the light emitting element 26 and the light receiving element 25 are integrated as a sphygmomanometer 68, so that convenience as a sphygmomanometer is good. In the present embodiment, the light emitting element 26 is provided in the support part 24 and the light receiving element 25 is provided in the pressurizing part 20, but it is natural that the light emitting element 26 and the light receiving element 25 may be provided in reverse. It is included in this embodiment.

本実施形態に係る血圧計６８による血圧測定方法では、被検体としての生体１０を圧迫するまでの過程は第１実施形態で説明したものと同様である。そして、加圧部２０の内部の受光素子２５と支え部２４の発光素子２６とは前述の透過型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定することができる。 In the blood pressure measurement method using the sphygmomanometer 68 according to the present embodiment, the process up to pressing the living body 10 as the subject is the same as that described in the first embodiment. Then, the light receiving element 25 inside the pressurizing unit 20 and the light emitting element 26 of the support unit 24 form the above-described transmission type pulse wave detection system to detect a pulse wave, and based on the detected pulse wave, the above-described principle. Thus, blood pressure can be measured.

また、図１１に、血圧計の別の形態を示した概略構成図を示す。本実施形態に係る血圧計６９では、第１実施形態で説明した血圧計に、被検体としての生体１０に光を照射する発光素子２６をさらに備え、受光素子２５は、発光素子２６から照射された照射光５１のうち生体１０を透過した透過光４７を検出する。図１１に示す形態では、受光素子２５を圧迫面２２の外部表面に配置し、発光素子２６を支え部２４に配置した形態を示している。図１１に示すように、発光素子２６及び受光素子２５を血圧計６９として一体化することで、血圧計としての利便性がよい。また、本実施形態では、受光素子２５を圧迫面２２の表面に埋め込むように配置しているため、受光素子２５は、生体１０からの透過光４７を直接受光することができる。また、血圧測定時には生体１０と受光素子２５とが密着しているため、外部からのノイズの混入を防ぐことができ、受光素子２５の受光効率を向上させることができる。その結果、高精度の血圧測定を可能とする。 FIG. 11 is a schematic configuration diagram showing another embodiment of the sphygmomanometer. In the sphygmomanometer 69 according to the present embodiment, the sphygmomanometer described in the first embodiment further includes a light emitting element 26 that irradiates the living body 10 as a subject, and the light receiving element 25 is irradiated from the light emitting element 26. The transmitted light 47 transmitted through the living body 10 is detected from the irradiated light 51. In the form shown in FIG. 11, the light receiving element 25 is arranged on the outer surface of the pressing surface 22, and the light emitting element 26 is arranged on the support portion 24. As shown in FIG. 11, the light emitting element 26 and the light receiving element 25 are integrated as a sphygmomanometer 69 so that convenience as a sphygmomanometer is good. In the present embodiment, since the light receiving element 25 is arranged so as to be embedded in the surface of the compression surface 22, the light receiving element 25 can directly receive the transmitted light 47 from the living body 10. Further, since the living body 10 and the light receiving element 25 are in close contact with each other during blood pressure measurement, external noise can be prevented from being mixed, and the light receiving efficiency of the light receiving element 25 can be improved. As a result, highly accurate blood pressure measurement is possible.

本実施形態に係る血圧計６９による血圧測定方法では、被検体としての生体１０を圧迫するまでの過程は第１実施形態で説明したものと同様である。そして、圧迫面２２の表面の受光素子２５と支え部２４の発光素子２６とは前述の透過型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定することができる。 In the blood pressure measurement method using the sphygmomanometer 69 according to the present embodiment, the process up to pressing the living body 10 as the subject is the same as that described in the first embodiment. Then, the light receiving element 25 on the surface of the compression surface 22 and the light emitting element 26 of the support portion 24 form the above-described transmission type pulse wave detection system to detect a pulse wave, and from the detected pulse wave, according to the above principle. Blood pressure can be measured.

なお、本実施形態では、受光素子２５を圧迫面２２に表面に埋め込むように設けているが、受光素子２５は圧迫面２２の表面上に配置してもよいし、圧迫面２２の内部表面に設けることとしてもよい。いずれの場合でも発光素子２６と受光素子２５とで透過型脈波検出系を構成することができる。また、図１０及び図１１に示す形態では、加圧部２０の側に受光素子２５、支え部２４の側に発光素子２６を備えているが、発光素子２６を加圧部２０の側に受光素子２５を支え部２４の側に設けてもよい。この場合も発光素子２６と受光素子２５とで透過型脈波検出系を構成することができる。 In the present embodiment, the light receiving element 25 is provided so as to be embedded in the pressing surface 22. However, the light receiving element 25 may be disposed on the surface of the pressing surface 22, or on the inner surface of the pressing surface 22. It is good also as providing. In any case, the light-emitting element 26 and the light-receiving element 25 can constitute a transmission type pulse wave detection system. 10 and 11, the light receiving element 25 is provided on the pressing part 20 side and the light emitting element 26 is provided on the support part 24 side. However, the light emitting element 26 is received on the pressing part 20 side. The element 25 may be provided on the support portion 24 side. Also in this case, the light-emitting element 26 and the light-receiving element 25 can constitute a transmission type pulse wave detection system.

（第４実施形態）
図１２は、本実施形態に係る血圧計を被検体としての生体の外耳及び／又はその周辺に装着した場合の概略図を示す。ここで外耳とは、外耳道と耳介とを含む概念であり、その周辺には浅側頭動脈又はその分岐血管の一部が少なくとも含まれる。図１２（Ａ）は生体の外耳及び／又はその周辺に本実施形態に係る血圧計が装着されている状態の例を示している。図１２（Ｂ）は図１２（Ａ）に示す生体の外耳及び／又はその周辺および保持部のＡ−Ａ´部分における拡大概略切断面を示している。 (Fourth embodiment)
FIG. 12 is a schematic diagram when the blood pressure monitor according to the present embodiment is attached to the outer ear of a living body as a subject and / or the periphery thereof. Here, the external ear is a concept including the external auditory canal and the pinna, and the periphery thereof includes at least a part of the superficial temporal artery or its branching blood vessel. FIG. 12A shows an example of a state in which the sphygmomanometer according to the present embodiment is attached to the outer ear of a living body and / or the periphery thereof. FIG. 12B shows an enlarged schematic cut surface of the outer ear and / or the periphery thereof and the AA ′ portion of the holding portion shown in FIG.

図１２（Ｂ）に示す本実施形態に係る血圧計７０は、外耳９の耳珠５を挟むように配置された加圧部２０及び支え部２４と、加圧部２０の内部に空気を供給する空気供給パイプ２３と、加圧部２０及び支え部２４を外耳９に固定する保持部２８と、を備える。図１２（Ａ）に示すように、本実施形態に係る血圧計７０の外耳９へ装着する部分は、保持部２８に実装されている。また、上記の他に、血圧計として機能させるために、加圧部２０の内部の圧力を計測する不図示の圧力計を備え、該圧力計と加圧部２０の内部とを接続する圧力伝達パイプ１９を備えている。 The sphygmomanometer 70 according to the present embodiment shown in FIG. 12B supplies air to the pressurizing unit 20 and the support unit 24 arranged so as to sandwich the tragus 5 of the outer ear 9 and the inside of the pressurizing unit 20. And an air supply pipe 23 and a holding part 28 for fixing the pressurizing part 20 and the support part 24 to the outer ear 9. As shown in FIG. 12 (A), a portion to be attached to the outer ear 9 of the sphygmomanometer 70 according to the present embodiment is mounted on the holding unit 28. In addition to the above, in order to function as a sphygmomanometer, a pressure gauge (not shown) that measures the pressure inside the pressurizing unit 20 is provided, and pressure transmission that connects the pressure gauge and the inside of the pressurizing unit 20 A pipe 19 is provided.

保持部２８は、図１２（Ａ）に示すように、外耳９の耳輪脚７から対輪６及び対珠８にかけて接し、また、図１２（Ｂ）に示すように、外耳９の対輪６および耳珠５に沿う形状に成型しており、外耳９に安定に装着することができる。さらに、保持部２８には図１２（Ａ）に示すように音声の通路として空洞２７が設けられている。この保持部２８は、プラスチック、ゴム、ウレタン等の外耳９を傷つけない材料であることが望ましい。 As shown in FIG. 12 (A), the holding portion 28 is in contact with the outer ring leg 7 from the outer ring leg 7 to the opposite ring 6 and the opposite bead 8, and as shown in FIG. 12 (B), the opposite ring 6 of the outer ear 9 is contacted. And molded into a shape along the tragus 5, and can be stably attached to the outer ear 9. Further, the holding portion 28 is provided with a cavity 27 as a voice passage as shown in FIG. The holding portion 28 is preferably made of a material that does not damage the outer ear 9 such as plastic, rubber, or urethane.

加圧部２０及び支え部２４は、図１２（Ｂ）に示すように、保持部２８と一体化されていて、耳珠５を挟むように装着される。ここで、加圧部２０は、筺体２９に例えばゴム膜３０を張って圧迫面を形成したもので、加圧部２０の内部の気体を送出・排出することにより、ゴム膜３０をせり出させて支え部２４と共に動脈を圧迫する。また、加圧部２０の内部への空気の送出・排出は、図１２（Ｂ）に示すように、空気供給パイプ２３により行なわれる。 As shown in FIG. 12B, the pressurizing unit 20 and the support unit 24 are integrated with the holding unit 28 and are mounted so as to sandwich the tragus 5. Here, the pressurizing unit 20 is formed by, for example, stretching a rubber film 30 on the housing 29 to form a compression surface. By sending and discharging the gas inside the pressurizing unit 20, the rubber film 30 is caused to protrude. Then, the artery is pressed together with the support portion 24. In addition, air is sent to and discharged from the pressurizing unit 20 by an air supply pipe 23 as shown in FIG.

また、加圧部２０の内部に、第３実施形態で示した発光素子２６及び受光素子２５を配置している。発光素子２６は、外耳９の一部としての耳珠５に光を照射し、受光素子２５は、発光素子２６の発光した光のうち耳珠５で散乱した散乱光４８を受光する。本実施形態では、発光素子２６で発光した光が、直接受光素子２５により受光されることを防止するため、発光素子２６の側の面が鏡面の遮光板３１を設けている。そして、発光素子２６及び受光素子２５とで上述した反射型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定する。 Further, the light emitting element 26 and the light receiving element 25 shown in the third embodiment are arranged inside the pressurizing unit 20. The light emitting element 26 irradiates the tragus 5 as a part of the outer ear 9 with light, and the light receiving element 25 receives the scattered light 48 scattered by the tragus 5 among the light emitted from the light emitting element 26. In the present embodiment, in order to prevent the light emitted from the light emitting element 26 from being directly received by the light receiving element 25, a light shielding plate 31 having a mirror surface on the light emitting element 26 side is provided. Then, the light-emitting element 26 and the light-receiving element 25 form the above-described reflection type pulse wave detection system to detect the pulse wave, and the blood pressure is measured from the detected pulse wave according to the principle described above.

このように、本実施形態に係る血圧計７０では、小型で外耳９に安定に装着できることから、日常生活において煩わしくなく装着して、連続的に、かつ人体の移動などによる雑音の影響を受けることなく血圧を測定できる。また、本実施形態では、血圧計７０を被検体としての生体の外耳９及び／又はその周辺に装着した形態を示したが、血圧計の装着部位は、被検体としての生体の外耳道及び／又は耳介、或いは耳珠及び／又はその周辺とすることがより望ましい。 Thus, since the sphygmomanometer 70 according to the present embodiment is small and can be stably worn on the outer ear 9, it can be worn comfortably in daily life and continuously affected by noise due to movement of the human body. Blood pressure can be measured. In the present embodiment, the sphygmomanometer 70 is mounted on the outer ear 9 of the living body as the subject and / or the periphery thereof. However, the mounting site of the sphygmomanometer is the outer ear canal and / or the living body as the subject. More preferably, the pinna or the tragus and / or its periphery.

なお、本実施形態では、発光素子２６及び受光素子２５を共に加圧部２０の内部に設けているが、反射型脈波検出系を形成するのであれば、例えば、ゴム膜３０の表面、支え部２４の面上に発光素子２６及び受光素子２５を設けることとしてもよい。或いは、受光素子２５のみをゴム膜３０の表面に設けてもよいし、発光素子のみをゴム膜３０の表面に設けてもよい。 In the present embodiment, both the light emitting element 26 and the light receiving element 25 are provided in the pressurizing unit 20. However, if a reflection type pulse wave detection system is formed, for example, the surface of the rubber film 30 is supported. The light emitting element 26 and the light receiving element 25 may be provided on the surface of the portion 24. Alternatively, only the light receiving element 25 may be provided on the surface of the rubber film 30, or only the light emitting element may be provided on the surface of the rubber film 30.

（第５実施形態）
図１３は、本実施形態に係る血圧計を被検体としての生体の外耳に装着した場合の概略図を示す。図１３（Ａ）は外耳に本実施形態に係る血圧計が装着されている状態の例を示している。図１３（Ｂ）は図１３（Ａ）に示す外耳および保持部のＡ−Ａ´部分における拡大概略切断面を示している。なお、第４実施形態で説明したものと同様のものについては番号を同一として説明を省略する。 (Fifth embodiment)
FIG. 13 shows a schematic diagram when the blood pressure monitor according to the present embodiment is attached to the outer ear of a living body as a subject. FIG. 13A shows an example of a state in which the sphygmomanometer according to the present embodiment is attached to the outer ear. FIG. 13B shows an enlarged schematic cut surface at the AA ′ portion of the outer ear and the holding portion shown in FIG. In addition, about the thing similar to what was demonstrated in 4th Embodiment, a number is the same and description is abbreviate | omitted.

図１３（Ｂ）に示す本実施形態に係る血圧計７１は、外耳９の耳珠５を挟むように配置された加圧部２０及び支え部２４と、加圧部２０の内部に空気を供給する空気供給パイプ２３と、加圧部２０及び支え部２４を外耳９に固定する保持部２８と、を有する。図１３（Ａ）に示すように、本実施形態に係る血圧計７１の外耳９へ装着する部分は、保持部２８に実装されている。 The sphygmomanometer 71 according to this embodiment shown in FIG. 13B supplies air to the inside of the pressurizing unit 20 and the pressurizing unit 20 and the support unit 24 that are arranged so as to sandwich the tragus 5 of the outer ear 9. The air supply pipe 23 and the holding part 28 for fixing the pressurizing part 20 and the support part 24 to the outer ear 9. As shown in FIG. 13A, the portion to be attached to the outer ear 9 of the sphygmomanometer 71 according to this embodiment is mounted on the holding unit 28.

本実施形態では、加圧部２０の内部に第２実施形態で示した受光素子２５を備え、支え部２４に第２実施形態で示した発光素子２６を配置している。発光素子２６は、外耳９の一部としての耳珠５に光を照射し、受光素子２５は、発光素子２６の発光した光のうち耳珠５を透過した透過光４７を受光する。そして、発光素子２６及び受光素子２５とで上述した透過型脈波検出系を形成して脈波を検出し、その検出した脈波から、前述の原理により血圧を測定する。 In the present embodiment, the light receiving element 25 shown in the second embodiment is provided inside the pressurizing unit 20, and the light emitting element 26 shown in the second embodiment is arranged on the support part 24. The light emitting element 26 irradiates the tragus 5 as a part of the outer ear 9 with light, and the light receiving element 25 receives the transmitted light 47 transmitted through the tragus 5 among the light emitted from the light emitting element 26. The light-emitting element 26 and the light-receiving element 25 form the transmission pulse wave detection system described above to detect a pulse wave, and the blood pressure is measured from the detected pulse wave according to the principle described above.

このように、本実施形態に係る血圧計７１では、小型で外耳９に安定に装着できることから、日常生活において煩わしくなく装着して、連続的に、かつ人体の移動などによる雑音の影響を受けることなく血圧を測定できる。また、本実施形態では、血圧計７１を被検体としての生体の外耳９及び／又はその周辺に装着した形態を示したが、血圧計の装着部位は、被検体としての生体の外耳道及び／又は耳介、或いは耳珠及び／又はその周辺とすることがより望ましい。 Thus, since the sphygmomanometer 71 according to the present embodiment is small and can be stably worn on the outer ear 9, it can be worn without being troublesome in daily life and continuously affected by noise due to movement of the human body. Blood pressure can be measured. In the present embodiment, the sphygmomanometer 71 is mounted on the outer ear 9 of the living body as a subject and / or the periphery thereof, but the mounting site of the sphygmomanometer is the outer ear canal and / or the living body as the subject. More preferably, the pinna or the tragus and / or its periphery.

なお、本実施形態では、受光素子２５を加圧部２０の内部に、発光素子２６を支え部２４の面上に設けているが、透過型脈波検出系を形成するのであれば、例えば、受光素子２５をゴム膜３０の表面に設けてもよい。或いは、発光素子２６と受光素子２５とを入れ替えて設けることとしてもよいし、発光素子２６と受光素子２５とを入れ替えてさらに発光素子２６をゴム膜３０の表面に設けることとしてもよい。 In this embodiment, the light receiving element 25 is provided inside the pressurizing unit 20 and the light emitting element 26 is provided on the surface of the support unit 24. However, if a transmission type pulse wave detection system is formed, for example, The light receiving element 25 may be provided on the surface of the rubber film 30. Alternatively, the light emitting element 26 and the light receiving element 25 may be provided interchangeably, or the light emitting element 26 and the light receiving element 25 may be interchanged and the light emitting element 26 may be provided on the surface of the rubber film 30.

本発明の血圧計は、生体の外耳等の小さい部位での長時間の血圧の測定を可能とするため、体調や体の活動状態を知るための手段としての用途にも適用できる。 The sphygmomanometer of the present invention can be applied to a use as a means for knowing the physical condition and the activity state of the body because the blood pressure can be measured for a long time in a small part such as the outer ear of a living body.

１実施形態に係る血圧計を被検体としての生体に装着した場合の概略図である。It is the schematic at the time of mounting | wearing the biological body as a subject with the blood pressure meter concerning 1 embodiment. 加圧部により被検体としての生体を圧迫したときの、圧迫面の押圧力を示した概略図である。It is the schematic which showed the pressing force of the compression surface when the biological body as a subject is compressed by the pressurization part. 受光素子を圧迫面の外部表面に配置した形態を示した概略図である。It is the schematic which showed the form which has arrange | positioned the light receiving element in the outer surface of the pressing surface. 受光素子を圧迫面の内部表面に配置した形態を示した概略図である。It is the schematic which showed the form which has arrange | positioned the light receiving element in the inner surface of the pressing surface. 受光素子を筺体の筺底に配置した形態を示した概略図である。It is the schematic which showed the form which has arrange | positioned the light receiving element in the bottom of the housing. 受光素子を筺体の筺底に配置した形態を示した概略図である。It is the schematic which showed the form which has arrange | positioned the light receiving element in the bottom of the housing. 受光素子を筺体の筺底に配置した形態を示した概略図である。It is the schematic which showed the form which has arrange | positioned the light receiving element in the bottom of the housing. 血圧計の１実施形態を示した概略構成図である。It is a schematic structure figure showing one embodiment of a sphygmomanometer. 血圧計の別の実施形態を示した概略構成図である。It is the schematic block diagram which showed another embodiment of the blood pressure meter. 血圧計の１実施形態を示した概略構成図である。It is a schematic structure figure showing one embodiment of a sphygmomanometer. 血圧計の別の実施形態を示した概略構成図である。It is the schematic block diagram which showed another embodiment of the blood pressure meter. １実施形態に係る血圧計を被検体としての生体の外耳に装着した場合の概略図である。It is the schematic at the time of mounting | wearing the outer ear of the biological body as a subject with the blood pressure meter which concerns on 1 embodiment. １実施形態に係る血圧計を被検体としての生体の外耳に装着した場合の概略図である。It is the schematic at the time of mounting | wearing the outer ear of the biological body as a subject with the blood pressure meter which concerns on 1 embodiment.

Explanation of symbols

５：耳珠，６：対輪，７：耳輪脚，８：対珠，９：外耳，１０：生体
１９：圧力伝達パイプ，２０：加圧部，２１：筺体，２２：圧迫面，２３：空気供給パイプ，２４：支え部
２５：受光素子，２６：発光素子
２７：空洞，２８：保持部，２９：筺体，３０：ゴム膜，３１：遮光板
３２：透光性の材料で形成された領域
３３：隔壁
３４：レンズ
４０：反発力
４１：押圧力
４２：中央
４３：最大加圧点
４５：押圧力が等圧の領域
４７：透過光，４８：散乱光，４９、５１：照射光
６０−７１：血圧計
5: tragus, 6: counter ring, 7: ear ring leg, 8: counter ring, 9: outer ear, 10: living body 19: pressure transmission pipe, 20: pressurizing part, 21: housing, 22: compression surface, 23: Air supply pipe, 24: support part 25: light receiving element, 26: light emitting element 27: cavity, 28: holding part, 29: housing, 30: rubber film, 31: light shielding plate 32: formed of a translucent material Area 33: partition wall 34: lens 40: repulsive force 41: pressing force 42: center 43: maximum pressing point 45: area where pressing force is equal pressure 47: transmitted light, 48: scattered light, 49, 51: irradiation light 60 -71: Sphygmomanometer

Claims

A sphygmomanometer comprising: a pressurizing unit that compresses a subject with a compression surface; and a light receiving element that detects light that is scattered by the subject or transmitted through the subject out of light irradiated on the subject. ,
The sphygmomanometer, wherein the light receiving element is disposed at a position perpendicular to the compression surface from a maximum pressure point at which a pressing force of the compression surface when the subject is compressed is maximized.

The sphygmomanometer according to claim 1, wherein at least the vicinity of the maximum pressurization point of the compression surface is formed of a translucent material, and the light receiving element is disposed inside the pressurization unit. .

The sphygmomanometer according to claim 1, wherein at least the vicinity of the maximum pressure point of the compression surface is formed of a translucent material, and the light receiving element is disposed on an inner surface of the compression surface. .

The sphygmomanometer according to claim 1, wherein the light receiving element is disposed on an outer surface of the compression surface.

A sphygmomanometer comprising: a pressurizing unit that compresses a subject with a compression surface; and a light receiving element that detects light that is scattered by the subject or transmitted through the subject out of light irradiated on the subject. ,
The sphygmomanometer, wherein the light receiving element is disposed at a position perpendicular to the compression surface from the center of the compression surface.

The sphygmomanometer according to claim 5, wherein at least the vicinity of the center of the compression surface is formed of a translucent material, and the light receiving element is disposed inside the pressurizing unit.

The sphygmomanometer according to claim 5, wherein at least the vicinity of the center of the compression surface is formed of a translucent material, and the light receiving element is disposed on an inner surface of the compression surface.

The sphygmomanometer according to claim 5, wherein the light receiving element is disposed on an outer surface of the compression surface.

The light-emitting element further irradiates the subject with light, and the light-receiving element detects light scattered by the subject or transmitted through the subject out of the light emitted from the light-emitting element. The blood pressure monitor according to any one of claims 1 to 8.

The sphygmomanometer is mounted on and / or around the outer ear of a living body as the subject, and the light emitting element irradiates light to the outer ear and / or a part of the periphery of the living body. 9. The blood pressure monitor according to 9.

The sphygmomanometer is attached to an external auditory canal and / or pinna of a living body as the subject, and the light emitting element irradiates a part of the external auditory canal and / or pinna of the living body. 9. The blood pressure monitor according to 9.

The sphygmomanometer is mounted on the tragus of the living body as the subject and / or the periphery thereof, and the light emitting element irradiates light on the tragus of the living body and / or a part of the periphery thereof. The blood pressure monitor according to claim 9.

The sphygmomanometer is attached to the outer ear of the living body as the subject and / or the periphery thereof, and the light receiving element includes the outer ear of the living body and the outer ear of the living body and / or a part of the periphery of the living body. The sphygmomanometer according to any one of claims 1 to 10, wherein the sphygmomanometer detects light scattered at a part of the periphery or / or transmitted through the outer ear of the living body and / or a part of the periphery thereof.

The sphygmomanometer is attached to the external auditory canal and / or pinna of the living body as the subject, and the light receiving element includes the external ear canal and / or the ear canal of the living body out of light irradiated to a part of the external auditory canal and / or pinna of the living body. The sphygmomanometer according to any one of claims 1 to 9, wherein light that is scattered by a part of the auricle or transmitted through a part of the external auditory canal and / or the auricle of the living body is detected. .

The sphygmomanometer is attached to the tragus of the living body as the subject and / or the periphery thereof, and the light receiving element is a part of the living body among the light irradiated to the tragus of the living body and / or a part of the periphery thereof. 13. The light according to claim 1, wherein light that is scattered or transmitted through a part of the tragus and / or its periphery is detected. Blood pressure monitor.