WO2004069049A1 - Blood pressure pulsation measuring device and mounting implement for measuring blood pressure and pulse wave - Google Patents

Abstract

A blood pressure pulsation measuring device and a mounting implement for measuring blood pressure pulsation, the device comprising a device body (200) having a calculation and measurement means (61) receiving the fluctuation of a pressure on a vessel wall at the measured portion (b) of a test subject and calculating and measuring blood pressure pulsation; the mounting implement (100) comprising a mounting implement body (11) installed on the body of the test subject at the measured portion (b), a pressure detection means (21) having a pressure sensing part (30) disposed on the inside of the mounting implement body, and a pressurizing means (13) having a pressurizing part (13B) pressurizing the mounting implement body to the measured portion of the test subject to transmit the pressure at the measured portion to the pressure sensing part of the pressure detection means. The pressure detection means (21) detects the pressure fluctuation and pulse wave of an artery (a) independently of the pressurizing means.

Description

Blood pressure pulse wave measuring device and blood pressure pulse wave measuring equipment

 The present invention relates to a blood pressure and pulse wave measuring device for electrically measuring blood pressure and a pulse wave of a human body in a hospital, a doctor's office, or a home, and to an improvement in a wearing device thereof. Akita

Background art

 In general, a blood pressure pulse wave measuring device includes a pressurizing unit including a pressurizing unit for pressurizing a measurement site of a body, a pressure detection unit for detecting a pressure change from the measurement site, and a blood pressure and a pulse in response to a pressure change of the pressure detection unit. An apparatus main body composed of arithmetic measuring means for arithmetically measuring the waves, display means for displaying the measured values of the arithmetic measuring means, and printing means for printing the measured values as necessary; And a wearer attached to the body so as to hold the pressurizing section of the pressurizing means at a measurement site of the body in order to transmit the value of the pulse wave. The attire is called “cuff”, “manchette”, “armband”, etc., but it is often called “power”.

 The blood pressure pulse wave measuring device used at home is small and compact, while the device used at a hospital or the like is larger and has a pressurized section inside the cuff. A long pipe is connected between the device and the pressurizing means of the device main body.

An example of a prior art blood pressure measurement device is shown in FIG. As shown in the figure, the cuff 1 has a pressurizing chamber (pressurizing section) 2 inside, and this pressurizing champer 2 is connected to a pressurizing source of the apparatus main body (not shown) via an air tube 3. Have been. Before starting the measurement, pressurize the cuff 1 on the arm or arm by bringing the pressure champ 2 into contact with the measurement site b so as to cover the artery (blood vessel) Is wrapped around the measurement site b such as a foot. Next, the compressor system of the pressurizing means on the device body side is operated, and compressed air is sent into the pressurized chamber 2 via the air tube 3. Since it closely adheres to the part corresponding to a, the artery a is pressurized through the pressurizing champer 2 and the air tube 3, and then the pressure source is depressurized to grasp the movement of the artery 'a on the main body side. More specifically, in the process of depressurizing the artery a, the pulsation of the artery a is detected by a pressure sensor (pressure detecting means) on the device body side via the air tube 3, and the pulsation is converted into an electric signal of the pulsation by the pressure sensor. Is converted. The calculation and measurement means of the apparatus body calculates the systolic blood pressure, the diastolic blood pressure, the blood pressure pulse wave, and the like by processing the pulsating electric signal, and displays the calculation results on a display (display means). It can be printed out by a printing machine (printing means) as needed.

 The principle of measuring blood pressure using this pressure sensor is as follows. At the stage where the cuff is pressurized and the blood flow is stopped and then gradually decompressed, when the blood pressure exceeds the cuff pressure and the blood starts to flow intermittently in accordance with the heartbeat, The cuff pressure (pulse wave), which reflects the vibration of the blood vessel wall synchronized with the heartbeat, is detected by a pressure sensor, and when the pulse wave suddenly increases, the cuff pressure is reduced to the systolic blood pressure and rapidly decreased. Measure the cuff pressure at the time of diastolic blood pressure. This measurement method is called the oscillometric method because it uses minute vibrations (oscillations) in the cuff.

Another method for measuring blood pressure is to auscultate the blood vessel sound called Korotkoff sound (K sound) that occurs when the cuff is decompressed and blood begins to flow intermittently in time with the heartbeat. The cuff pressure when the K-sound begins to occur is determined as the systolic blood pressure while monitoring the force pressure while monitoring the mercury column, and the cuff pressure when the K-sound disappears is determined as the diastolic blood pressure. It is a method of measuring. This is commonly referred to as auscultation. The blood pressure measurement method using the auscultation method can measure blood pressure with higher accuracy than the blood pressure measurement method using the oscillometric method. The inability to auscultate the sound often forced a repeat of the blood pressure measurement, which was particularly unsuitable for home measurements. On the other hand, the blood pressure measurement method using the ostomy metric method does not require a microphone-mouth phone, and does not need to be set on the artery as accurately as the blood pressure measurement method using the auscultation method. However, there is a drawback in that the measurement accuracy is lower than the measurement method based on the pharmacological examination method. Since it is important for any type of blood pressure pulse wave measuring device to have high reliability based on high measurement accuracy, continuous R & D is being pursued in search of this high measurement accuracy. However, as for the prior art oscillometric blood pressure pulse wave measuring apparatus, various problems still remain as described below.

One challenge is that it is difficult to measure pulsation with high sensitivity and accuracy. In general, when the artery is crushed and blood is blocked at an internal pressure of about 200 mmHg, the operation of the compressor is stopped and the measurement of blood pressure is started. The pneumatic volume to be measured by the pneumatic pressure sensor is the sum of the volume of the champer 2 and the volume of the air tube 3. For example, an air tube 3 having a diameter (inner diameter) of 4 mm and a length of 2000 mm has a volume Vt of about 25 cm ³ . On the other hand, when the pulsation in the blood vessel is detected by the pressure sensor, the volume change ratio Vs is the volume of the chamber 2 Vc, the volume of the air tube 3 is Vt, and the volume change of the measurement site b due to the pulsation of the blood vessel pressure. Assuming that Δν, it is inversely proportional to V c and V t as is clear from the following equation (2). That is, the volume change ratio Vs decreases as Vc and Vt increase.

V s = 1-[V c + V ΐ] / [V c + V t + Δ V] ... (1) For this reason, a blood pressure pulse wave measuring device with a large Vc or Vt has a particularly low measurement sensitivity and is greatly affected by disturbance, so that it is not possible to measure blood vessel pulsation and pressure changes with high measurement accuracy. .

 Another problem is that prior art devices have poor responsiveness when detecting pulsations in blood vessels. This is because the chamber 2 on the cuff 1 side is too far from the pneumatic pressure sensor on the main unit side. This poor responsiveness is significant when, for example, blood pressure and pulse waves are measured simultaneously at a plurality of measurement sites such as arms and legs and the amount of change in blood pressure at each site is calculated as a function of time to produce data. It is an obstacle.

 In addition, in order to measure blood pressure with high accuracy, the cuff needs to have a width appropriate for the size of the measurement site of the subject, and in general, the width of the cuff is at least the width of the arm. It is said that it is necessary to have a width of at least 1.2 times the diameter. The reason is that if the width of the cuff is small relative to the thickness of the arm, blood pressure in the arm cannot be crushed even if the cuff is pressed, so accurate blood pressure data cannot be obtained. However, it is not practical to prepare cuffs of various widths according to various arm thicknesses of the subject because it is uneconomical and complicated in management. '' 'A sphygmomanometer that can measure blood pressure without being affected by the width of the cuff ゃ the thickness of the subject's arm has been proposed (Japanese Patent Application No. 5-26090989) Gazette). This sphygmomanometer consists of internal and external cuffs arranged so as to sandwich a pressure sensor.The internal and external cuffs are provided with a low pump such as water, silicon oil, liquid Freon, and alcohol supplied from a common pump. Viscous conductive liquid is supplied.

This sphygmomanometer uses a low-viscosity liquid to propagate the pressure change at the measurement site, so the measurement accuracy is improved compared to highly compressible air. Pressure change is also propagated from the pump to the outer cuff that communicates with the pipe through the pipe and its branch position. Therefore, as in the case where the pressure sensor is arranged on the device body side, The pressure change at the measurement site is attenuated. Therefore, even if the pressure sensor is near the measurement site, the accuracy of the pressure change received by the pressure sensor itself decreases due to the attenuation. In addition, since the low-viscosity liquid is stored in the space including the pump and the piping, the entire device becomes large, and it is necessary to manage the liquid leakage, and maintenance management is troublesome.

 An object of the present invention is to provide a blood pressure pulse wave measurement wearing device capable of detecting blood vessel pulsation and pressure change with high responsiveness and measuring blood pressure with high accuracy and high sensitivity. .

 Another object of the present invention is to provide a blood pressure pulse wave measurement wear device capable of detecting blood vessel pulsation and pressure change with high responsiveness and measuring blood pressure with high accuracy and high sensitivity. is there. Disclosure of the invention

 One feature of the present invention is that a device main body comprising arithmetic measuring means for arithmetically measuring a blood pressure and a pulse wave in response to a pressure fluctuation of a blood vessel wall at least at a measurement site of a subject, and measuring the body of the subject Transmits the pressure at the measurement site to the pressure sensing means having the mounting device body attached to the site, the pressure sensing portion supported by the mounting device body and arranged inside the mounting device, and the pressure sensing portion of the pressure detecting device. (10.0) comprising pressurizing means (13) having a pressurizing section (13B) to press the body of the wearer against the measurement site of the subject as described above. The pressure-sensitive part of the detecting means is to provide a blood pressure pulse wave measuring device in which the pressure transmission system is independent from the pressurizing part of the pressurizing means.

Another feature of the present invention is that a pressure sensor having a mounting body mounted on a measurement site of the subject's body and a pressure-sensitive portion supported by the mounting body and disposed inside the mounting tool. And a pressurizing means having a pressurizing portion for applying pressure to the measurement part of the subject so that the pressure of the measurement part is transmitted to the pressure-sensitive part of the pressure detection means. The unit provides a blood pressure pulse wave measuring device in which the pressure transmission system is independent from the pressurizing unit of the pressurizing means. It is in.

 In these features of the present invention, the wearing tool main body is a cuff-shaped wearing member wound around a measurement site of the subject's arm, wrist or leg. It may be composed of a pair of clamp members that can be opened and closed so as to hold and press the pressure-sensitive part against the measurement site of the subject's arm.

 The pressure detecting means includes: a pressure-sensitive portion responsive to a pressure change received from a blood vessel wall of an artery at a measurement site; a housing in which a diaphragm responsive to the pressure in the pressure-sensitive portion is housed; and a diaphragm housed in the housing. And a pressure sensor such as a strain gauge responsive to the pressure. The pressure sensing portion may be formed of a flexible container (bag) containing an appropriate fluid communicating with the pressure receiving side of the diaphragm.

 The pressurizing section of the pressurizing means is typically composed of a pressurizing member such as a flexible bag which pressurizes the pressure-sensitive section of the pressure detecting means directly or indirectly through the mounting device main body. The pressurizing member is pressurized by a pressurized fluid supplied from a pressure controller such as a compressor on the apparatus body side. When the pressure sensing part of the pressure detecting means is made of a flexible container, the flexible container can be in fluid communication with the pressurizing member via an on-off valve. The fluid container is pressurized through the on-off valve, but after the pressurization, the on-off valve is closed and closed, so after the pressure member is depressurized, the flexible container Transmits pressure to strain gauges in response to pressure fluctuations only.

 Another form of the pressing means may be a spring, which is arranged inside the mounting member so as to surround the pressure sensor and can be pressurized by mounting the mounting member, or a pair of clamps. It can be placed between handles that open and close the member.

The wearing device is wrapped around the measurement site on the body of the subject so that the pressure-sensitive part of the pressure detection unit corresponds to the artery, and a predetermined pressure is applied to the measurement site via the pressing unit Then, the information on the pulsation and pressure change of the blood vessel is detected by the pressure sensor via the pressure sensing part of the pressure detecting means, and is immediately converted into an electric signal. As described above, information on the pulsation and pressure change of the blood vessel can be electrically obtained from the pressure sensor. Therefore, such information is supplied to the main body of the apparatus with high responsiveness, and a highly accurate measurement value can be obtained. -More specifically, the pressurizing means only has the function of pressing the pressure-sensitive part of the pressure detecting means against the measuring part, and the pressure-sensitive means of the pressure sensor independent of the internal fluid of this pressurizing means. Since the section picks up the artery information, even if the pressurizing means has a large volume, it can detect the pressure fluctuation with high responsiveness and measure the blood pressure and the pulse wave with high accuracy. Therefore, it is possible to simultaneously measure not only at the arm but also at a plurality of other places such as the feet without any inconvenience.

 Further, a microphone can be arranged inside or inside the body of the wearing device, in contact with or close to the pressure-sensitive portion of the pressure detecting means. If this microphone is used, blood pressure and the like can be measured with higher accuracy by using the auscultation method in combination with the pressure detection method.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic system diagram showing a front section of a part of a blood pressure pulse wave measuring device provided with a blood pressure pulse wave measuring device according to a first embodiment of the present invention, and FIG. FIG. 3 is an enlarged cross-sectional view of a pressure detecting means used in the device of FIG. 3, and FIG. 3 is a front view of a part of the blood pressure pulse wave measuring device provided with the blood pressure pulse wave measuring attachment according to the second embodiment of the present invention. FIG. 4 is a longitudinal sectional view of a main part of a blood pressure pulse wave measuring apparatus provided with a blood pressure pulse wave measuring attachment according to a third embodiment of the present invention, and FIG. FIG. 6 is a front sectional view of the wearing device according to the embodiment of the drawings, and FIG. 6 is used in the third embodiment of FIGS. 3 and 4. FIG. 7 is a longitudinal sectional view of a blood pressure pulse wave measuring device according to a fourth embodiment of the present invention, and FIG. 7 is a fourth embodiment of FIG. FIG. 9 is a longitudinal sectional view of the pressure detecting means used in the fourth embodiment of FIGS. 7 and 8, and FIG. 10 is a longitudinal sectional view of the present invention. FIG. 11 is a front cross-sectional view of the blood pressure pulse wave measurement wearing device according to the fifth embodiment, FIG. 11 is a longitudinal sectional view of the wearing device according to the fifth embodiment of FIG. 10, and FIG. FIG. 13 is a vertical cross-sectional view of a blood pressure pulse wave measurement wearing device according to a sixth embodiment of the invention. FIG. 13 is a top view of the wearing device according to the sixth embodiment of FIG. The figure is a front sectional view of a blood pressure pulse wave measuring device according to a seventh embodiment of the present invention, and FIG. 15 'is a blood pressure pulse wave measuring device according to an eighth embodiment of the present invention. Sectional view of the fixture, No. 16 Is a front sectional view of the attachment of the blood pressure pulse wave measuring apparatus according to one of the slave coming technology. BEST MODE FOR CARRYING OUT THE INVENTION

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a blood pressure pulse wave measuring device 10 according to the first embodiment of the present invention. 100 is comprised of a mounting tool (or cuff) 100 and an apparatus main body 200.

 The mounting device 100 is used to test the mounting device body 11 mounted on the measurement site b of the subject's body, the pressure detecting means 21 supported by the mounting device body 11, and the mounting device body 11 And a pressure means 13 for transmitting the pressure of the measurement part b to the pressure sensing part 30 of the pressure detection means 21 including a pressure part 13 B for pressing the measurement part b of the user. The pressure-sensitive part of the pressure detecting means is arranged in the attachment main body 11 so that the pressure transmission system is independent of the pressure part of the pressure means.

The apparatus main body 200 receives an electric signal of arterial information from the pressure medium controller 41 including a compressor which is a pressurizing source of the pressurizing means 13 and the pressure detecting means 21, amplifies it, and calculates Calculating means 61 for generating measured values of blood pressure and pulse wave, and displaying means for displaying the measured values from the calculating and measuring means 61 and the measuring means. Although a printing unit for printing the fixed value is provided, the display unit and the printing unit are not shown. The pressure medium controller 41 is connected to the pressurizing part 13 B in the mounting tool 100 via a rubber or synthetic resin pipe 14, and the arithmetic and measurement means 61 is connected via a wiring 29. The pressure detecting means 21 is connected to a pressure sensor described later.

 In the embodiment shown in FIG. 1, the attachment body 11 is made of a suitable material such as cloth, rubber or synthetic resin, and is made of a band which can be wound around the arm or leg. In order to maintain the attached state, a pair of freely connectable joints 12 is provided at both ends of the attachment main body 11. Typically, a well-known hook-and-loop fastener commercially available under the trade name Berg Open is used for the joint 12.

 In the illustrated embodiment, the pressurizing portion 13B of the pressurizing means 13 is a flexible bag (hereinafter referred to as a code) made of an appropriate material such as cloth, rubber, or synthetic resin having an inflatable and contractible champer therein. 1 3 B). The piping 14 is integrally connected to the flexible bag 13B so that the pressure medium is injected into the inside from the pressure medium controller 41 or the pressure medium is discharged from the inside. The flexible bag 13 B is applied to the inside of the attachment main body 11 to be integrated therewith, and the piping 14 extends through the attachment main body 1 1. and the outer surface of the attachment main body 11 Has been pulled out to the side. Of course, the pipe 14 may be drawn out of the main body 11 along the inner surface of the main body 11 without penetrating the main body 11. The flexible bag (pressing portion) 13 B of the pressurizing means 13 may be built in the band of the mounting device body 11, or the band may be sewn to a part of the face cloth as one face cloth. Or the other face cloth.

Referring to FIG. 2, a specific structure of the pressure detecting means 21 is shown. The pressure detecting means 21 includes a pressure sensor 28 housed in a housing 22 and a pressure sensor 28. And a pressure-sensitive part 30 (see Fig. 1) for supplying pressure. ' The housing 22 has a gauge storage chamber 23 and a variable volume pressure-sensitive chamber 25 partitioned by a diaphragm 27, and the gauge storage chamber 23 has an outlet 24 for a wiring 29. The variable volume pressure-sensitive chamber 25 has a connection port 26 connected to the pressure-sensitive part 30 via a connection pipe 31 integrated with the pressure-sensitive part 30. The pressure sensor 28 is attached in close contact with the surface of the diaphragm 27 on the gauge storage chamber 23 side. The pressure sensor 28 is composed of a semiconductor strain gauge (electrostrictive element) that outputs an electric signal corresponding to this minute pressure change when it receives a minute pressure change that causes strain.

 The pressure-sensitive portion 30 connected to the variable-volume pressure-sensitive chamber 25 includes a flexible bag-shaped flexible container 30 which can be expanded and contracted similarly to the flexible bag 13 B of the pressurizing means 13. It consists of B. The sealed interior of the flexible container 30B and the variable volume pressure-sensitive chamber 25 of the pressure detecting means 21 is filled with an appropriate pressure medium. It should be noted that the pressure medium inside the pressure sensing section 30 and the pressure sensing chamber 25 of the pressure detecting means 21 is independent of the pressure medium of the pressurizing means 13. The pressure medium may be a gas or a liquid. The gas is air, and the liquid is a jelly-like highly viscous liquid.

 As shown in FIG. 1, the housing 22 of the pressure detecting means 21 is held on the outer surface of the mounting device main body 11, and the flexible container 30 B as the pressure-sensitive portion 30 is mounted on the mounting device main body. The connection pipe 31 is disposed inside the flexible bag 13 B, which is a pressurizing portion, in the inside of the connection bag 1, and penetrates through the attachment body 11 and the flexible bag 13 B while maintaining fluid tightness. I have. ·

As shown in FIG. 1, the pressurizing means 13 of the apparatus main body 200 includes a pressure gauge 51 connected to a branch pipe 15 branching off from the pipe 14. The fluid used for the pressurizing means 13 is most generally air, and in this case, the pressure medium controller 41 is composed of an air compressor. Water or other liquids (including jelly-like high-viscosity liquids) can also be used as the other fluid of the pressurizing means 13, but in this case, the pressure medium controller 41 comprises a liquid pump . Pressure gauge 5 1 is pressurized section 1 3 This is for detecting whether or not the pressure supplied to B is at a predetermined level.

 The calculation and measurement means 61 is connected to the pressure sensor 28 of the pressure detection means 21 via a wiring 29, and the calculation and measurement means 61 amplifies an electric signal representing artery information from the pressure sensor 28. The blood pressure (diastolic blood pressure, systolic blood pressure), pulse, etc. are obtained by processing the amplifier and the amplified signal.

 The use state and operation of the blood pressure pulse wave measuring device shown in FIGS. 1 and 2 are described as follows. A wearing device 100 is wound around a measurement site b of a body such as an arm or a foot (leg), and a pair of joints is attached. Fix the mounting tool 100 to the measurement site b with the member (surface fastener) 12. In this state, the body surface near the artery (blood vessel) a is covered with a flexible bag 13 B, which is a pressurizing unit. Sex container 30B is located directly above artery a. In this state, the pressure medium controller 41 of the pressurizing means 13 is driven, and a predetermined amount of pressure medium (for example, air) is supplied to the inside of the pressurizing section 13B through the pipe 14 so that the flexible bag 13 B is expanded to compress the flexible container 30 B, which is the pressure-sensitive portion 30 of the pressure detecting means 21, between the measurement site b and the pressurizing portion 13 B. Therefore, the flexible container (champer) 30 B, which is the pressure sensing portion 30, fluctuates the pressure of the internal fluid in response to the pulsation and pressure fluctuation of the artery a with high sensitivity. Therefore, in the variable volume chamber 25 of the housing 22 of the pressure detecting means 21, the diaphragm 28 is distorted in response to the pressure fluctuation. In this way, the distortion of the diaphragm 28 corresponding to the pulsation and pressure fluctuation of the artery a is converted into an electric signal by the pressure sensor 28, and this electric signal is calculated by the arithmetic unit 200 on the side of the apparatus 200 via the wiring 29. It is supplied to the processing means 61. The arithmetic processing means 61 receives the electric signal and obtains blood vessel information such as diastolic blood pressure (systolic blood pressure) and systolic blood pressure (diastolic blood pressure) and pulse. These blood vessel information is displayed on a display unit provided on the apparatus main body 200 side or printed by a printing unit.

The most significant feature of the blood pressure pulse wave measuring device 10 shown in FIGS. That is, the pressure-sensitive part 30 of the power detecting means 21 contains a fluid independent of the fluid in the pressurizing part 13 B of the pressurizing means 13 and the pipe 14. For this reason, the pressure fluctuation from the artery (blood vessel) a to be sensed by the pressure sensor 28 of the pressure detecting means 21 is not affected by the volume in the pressurizing means 13 and is therefore attenuated. The pressure is transmitted to the pressure sensor 28 of the pressure detecting means 21 without any change. This means that blood vessel information can be obtained with high accuracy without being affected by the volume in the pressurizing means 13, and blood pressure and pulse can be measured with high accuracy. The pressure sensing part 30 of the pressure sensing means 21 responds to the pressure fluctuation from the blood vessel, and the pressure does not escape to the pressure sensing part 13 B of the pressure means 13 which comes into contact with the upper surface of the pressure sensing part 30. Therefore, it is necessary that the pressure transmission between the pressure sensing part 30 and the pressure part 13B is interrupted by a hard layer. This is because the upper surface of the flexible container 30B that is the pressure-sensitive portion 30 or the lower surface of the flexible bag that is the pressurized portion 13B is formed with a large thickness and hard, or the pressure-sensitive portion 30 This can be achieved by interposing a pressure shut-off member such as a hard plastic stick or metal between the pressurizing portion 13B.

 A blood pressure pulse wave measuring device according to a second embodiment of the present invention is shown in FIG. In this embodiment, the flexible container 30 B, which is the pressure sensitive portion 30 of the pressure detecting means 21, is connected to the flexible bag 13 B of the pressing means 13 via the pulp 32. It is the same as the apparatus of the embodiment shown in FIGS. 1 and 2 except that Therefore, the fluid of the pressure detecting means 21 and the fluid of the pressurizing means 13 are common fluids.

 The pulp 32 comprises a well-known small open / close valve having two ports 33, 34 and an opening / closing lever 35, and one port 33 is provided with a flexible bag 1 of the pressurizing means 13. 3B, and the other port 34 is connected to a flexible container 30B which is a pressure-sensitive part of the pressure detecting means 21.

The operating condition of the blood pressure pulse wave measuring device in FIG. 3 is that the sensitive pressure of the pressure detecting means 21 is supplied from the pressurizing means 13, but the pressure of the fluid is independent of the pressurizing means 13 during measurement. Except for the equipment shown in Figs. 1 and 2, The same. When the pressurized fluid is supplied to the pressurized section 13B via the pipe 14 from the pressure medium controller 41, the valve 32 is opened in advance when this device is used. A part is also supplied through a valve 32 to a flexible container (pressure-sensitive chamber) 30B, which is a pressure-sensitive part, and to the inside of a variable volume chamber 25 of the housing 22. In this way, when a predetermined amount of pressurized fluid is injected into the pressure sensing section 30 or the variable volume chamber 25, the valve 32 is closed by operating the opening / closing lever 35. Initially, the valve 32 is closed, fluid is injected into the pressurizing section 13B, and then the valve 32 is temporarily opened to partially detect the fluid in the pressurizing section 13 It may be supplied into the section 30 B or the variable volume chamber 25.

 According to the embodiment of FIG. 3, the pressure-sensitive fluid in the pressure detecting means 21 communicates with the fluid of the pressurizing means 13, but at the time of measurement, the valves 32 are closed so that Since they are independent, the pulse wave and pressure fluctuation from the blood vessel a can be detected with high accuracy without being affected by the large volume in the pressurizing means 13.

 In the embodiment of FIGS. 4 and 5, the pressurizing section (flexible bag) 13 B of the pressurizing means 13 is a pressure-sensitive section (flexible container) 30 of the pressure detecting means 21. The pressure detecting means 21 is arranged at a position different from the above, particularly on the opposite side across the measurement site b, and the entire pressure detecting means 21 is arranged inside the mounting tool body 11, and the pressure section 13 B piping 1 4 and the wiring 29 extending from the pressure sensor 28 are substantially the same as the apparatus of the embodiment shown in FIGS. 1 and 2 except that they extend out to the outside along the inside of the mounting body 11. Are the same.

 In this embodiment, the housing 22 of the pressure detecting means 21 has no variable volume chamber 25, and the pressure sensing part 30 has a housing 2 covering the diaphragm 27 as shown in FIG. Consists of two directly fixed flexible caps 30C. Therefore, the flexible cap 30C also serves as a variable volume chamber.

In this embodiment, as in the embodiment shown in FIGS. Although the pressure sensing part 30 of the power detection means 21 and the pressure part 13 B of the pressure means 13 do not overlap, the pressure detection means 13 The pressure-sensitive part 30 of the stage 21 can be pressurized to the measurement site b, and the pressure detecting means 21 can receive pressure fluctuations and pulse waves from the pressure-sensitive part 30 and detect them. it can. In this embodiment, the pressure sensing part of the pressure detecting means 21 is preferable because the influence from the pressing part 13B of the pressing means 13 can be further cut off. It is desirable that the piping 14 and the wiring 29 be put together to rationalize the wiring and piping.

 In the embodiment of FIGS. 4 and 5, the pressure detecting means 21 is preferably assembled to the wearing body 11, but is independent of the wearing body 11 as a separate body from the wearing body 11. You may let it. In the case of this independent type, after attaching the main body 11 to the measurement site, the pressure detecting means 21 is inserted between the main body 11 and the measurement site, and then the pressing means By driving 13, the blood vessel information can be measured in the same manner.

 The blood pressure pulse wave measuring device according to the embodiment shown in FIGS. 7 and 8 is the same as the embodiment shown in FIGS. 4 and 5 except that the form of the pressure detecting means 21 is different. . The pressure detecting means 21 according to this embodiment corresponds to a form in which the housing 22 of the pressure detecting means 21 according to the form of FIG. 2 is turned sideways as shown in FIG. 9, and the connection port 26 is provided with a housing. A flexible container 30 B, which is composed of an opening of a variable capacity chamber 25 of 22 and is a pressure-sensitive portion 30, is fixed to the housing 22 so as to cover this open connection port 26. .

According to this embodiment, since the pressure-sensitive portion (flexible container) of the pressure detecting means 21 is arranged so as to extend in the width direction of the mounting device main body 11, it surely faces the artery a to be measured. The blood pressure and the pulse wave can be measured more accurately. In addition, if the pressure detecting means 21 is made independent of the wearing body 11, the pressure sensing part 30 of the pressure detecting means 21 corresponds to the artery a to be measured when the wearing body 11 is wound. Be careful This makes it possible to quickly wind the mounting tool 100, which facilitates preparation for measurement.

 The blood pressure pulse wave measuring apparatus 10 according to the embodiment shown in FIGS. 10 and 11 comprises a pressure sensing section 30 of the pressure detecting means 21 inside the pressurizing section 13 B of the pressurizing means 13. 8 and 9 is substantially the same as the device according to the embodiment of FIGS. 8 and 9 except that a small auscultation microphone phone 71 is arranged so as to pick up the K sound from the microphone. In the illustrated embodiment, the small microphone 71 is arranged in contact with the pressure sensing section 30, but may be arranged inside the pressure sensing section 30.

 In this embodiment, if the pressure sensing part 30 of the pressure detecting means 21 is displaced from the upper part of the artery a, the pressure sensor 28 of the pressure detecting means 21 cannot detect the pulsation. The measurement result does not appear on the display means on the main body 200 side. Therefore, the subject resets the pressure sensing section 30 of the pressure detecting means 21 to the correct position and re-measures the measurement. This causes the small microphone 71 to emit the Korotkoff sound (K The sound can be picked up and the K sound can be auscultated reliably. In this way, when the pressure detection and the auscultation are used together, it is easy to set the pressure-sensitive portion 30 of the pressure detection means 21 and the microphone 71 at the correct positions, respectively. High-precision measurement can be performed from the measurement result. In order to facilitate resetting, the pressure detecting means 21 is not fixed to the main body 11, but is wound independently around the measuring part b. Although it is preferable to insert the inside of the wearing device body 11, it is needless to say that it may be fixed to the wearing device body 11.

'' The blood pressure pulse wave measuring device 10 according to the embodiment shown in FIGS. 12 and 13 is different from the pressure sensing device in that the small microphone mouth phone 71 is not attached to the boss 30 of the pressure detecting means 21. It is the same as the blood pressure pulse wave measuring device 10 of FIGS. 10 and 11 except that it is mounted inside the pressurizing part 30 of the pressurizing means 13 close to 30. In this case, the small microphone 7 1 It is necessary to arrange the artery a on the downstream side of the pressure sensing part 30 of the pressure detecting means 21 (elbow side in the case of the upper arm). This microphone is connected to a sound receiving means such as a stethoscope (not shown) or a sound-electrical signal converter. The sound-to-electrical signal converter is transmitted to the operation and measurement means 61, and the operation and measurement means 61 electrically captures the K sound from the electric signal to measure the blood pressure pulse wave.

 In this way, similarly to the embodiment of FIGS. 10 and 11, a force capable of measuring blood vessel information by using both pressure detection and auscultation is used. 0 is smaller than the embodiment of FIGS. 10 and 11, so the measurement of the pressure detection method is more effective than the embodiments of FIGS. 10 and 11 in terms of pressure fluctuation and pulse wave. This is advantageous because the blood pressure and the pulse wave can be measured more accurately by comparing the measurement results of the rain method. In addition, since the pressure-sensitive part of the pressure detecting means and the small microphone phone are arranged close to each other, the wiring of both can be integrated, so that there is no entanglement of wiring, and wiring management is simplified. be able to. ·

 The blood pressure pulse wave measuring device 10 according to the embodiment of FIG.

3 is made of a metal or synthetic resin spring 13S, and the pressure detecting means 21 is of the structure used in any of the embodiments shown in FIGS. 1 to 9. It is substantially the same as that of these embodiments except for.

 The pressurizing spring 13 S and the pressure sensing portion 30 of the pressure detecting means 21 are integrated by an appropriate connecting means such as bonding, welding, metal fitting or the like according to these materials. 3S is also attached to the attachment body 11 by an appropriate connecting means.

As shown in FIG. 14, the blood pressure pulse wave measuring device 10 according to the embodiment of FIG. 14 attaches the wearing device main body 11 to the measurement site b of the body, and then pulsates the arterial pulse a.ぴ Detects pressure fluctuation, but tightens with spring 13B The subsequent decompression can be performed by an appropriate method such as sliding the joining member 12 of the mounting device main body 11.

 The blood pressure pulse wave measuring apparatus 10 according to the embodiment shown in FIG. 15 has a form of a clip 11 C in which the wearing body 11 is composed of a pair of openable and closable clamp members 38, 39. The clamp members 38, 39 are composed of a pressure spring 13S acting between the handles 38H, 39H of the clamp members 38, 39 in the direction in which the clamp members 38, 39 close. The clamp members 38, 39 can be made of metal or synthetic resin, and the pressure spring 1'3S can also be made of metal or synthetic resin. The pressure detecting means 21 may have any of the structures of the pressure detecting means 21 according to the embodiment shown in FIGS. 1 to 9, similarly to the embodiment shown in FIG. The pressure detecting means 21 is arranged inside one clamp member 39.

 In this blood pressure pulse wave measuring device 10, when the clamp members 38, 39 are set at a high pressure so as to sandwich the measuring portion b of the body via the pressure detecting means 21, the measuring portion b The diastolic blood pressure is tightened by this high pressure via 3S to crush the blood vessel in artery b, and then slowly grasp the handles 38H, 39H to open the clamp members 38, 39 and decompress. The systolic blood pressure and pulse can be measured.

 In the embodiment of FIG. 15, the pressure between the clamp members 38 and 39 is generated by the spring 13 B. However, instead of the spring 13 B, such as a container or a cylinder which expands and contracts by an external fluid pressure. An actuator may be used.

 Although various embodiments of the present invention have been described, the present invention provides a pressure sensing unit 30 of the pressure detecting unit 21 so that the pressure sensing unit 30 is not affected by the volume or fluid of the pressurizing unit 13. As long as the relationship is set, the positional relationship and structure between the two are not limited to the above embodiment.

For example, in the embodiment shown in FIGS. 1 and 3, the pressure sensing part 30 of the pressure detecting means 21 is located inside the pressure part 13 B of the pressure means 13 and is superposed. , Pressure sensing means 21 pressure sensing part 30 and pressure means 13 pressure section 13 B They may be arranged at different positions inside the wearing tool main body 11 without overlapping. In these cases, the connecting pipe 31 of the pressure detecting means 21 does not need to penetrate the pressurizing portion 13 B of the pressurizing means 13, so that the assembling is easy and the sensing of the pressure detecting means 21 is easy. The pressure section 30 is not in direct contact with the pressure section 13B of the pressurizing means 13 and is therefore preferably not affected by the pressure section 13B. ''

 Further, in the embodiment shown in FIGS. 4 and 5, and in the embodiment shown in FIGS. 7 and 8, the pressure-sensitive portion 13 B of the pressure means 13 and the pressure-sensitive Although the part 30 and the part 30 are located at different positions inside the wearing tool main body 11, they may be arranged so as to overlap each other.

 In any of the above-described eight embodiments, the pressure sensing portion 30 of the pressure detecting means 21 is independent of the internal fluid of the pressurizing means 13 and the transmission of pressure is shut off from each other. It is not affected by the volume or fluid in the pressurizing means 13 and the pressure fluctuations and pulse wave of the artery a can be reliably picked up through the pressure sensing part 30, and therefore, the blood pressure, pulse, etc. Vascular information can be reliably measured with high sensitivity and high responsiveness. Industrial applicability

 The blood pressure pulse wave measuring device according to the present invention picks up pressure fluctuations and pulse waves via a pressure-sensitive portion which is not affected by the internal volume or the like independently of the pressurizing means. Blood vessel information such as pulse can be measured with high accuracy and sensitivity, and can be used not only in hospitals but also at home, improving industrial usability.

Claims

The scope of the claims  1. A device main body (200) comprising operation measuring means (61) for calculating and measuring blood pressure and pulse wave at least in response to pressure fluctuations of the blood vessel wall at the measurement site (b) of the subject; A pressure detecting means (21) having a wearing body (100) mounted on a measurement site (b) of the subject's body and a pressure-sensitive portion (30) arranged inside the wearing body. ) And a pressurizing means (13B) having a pressurizing portion (13B) for applying pressure to the measuring portion of the subject so as to transmit the pressure of the measuring portion to the pressure-sensitive portion of the pressure detecting means. 13), wherein the pressure-sensitive part of the pressure detecting means has a pressure transmission system independent from the pressurizing part of the pressurizing means. Pulse wave measuring device.  2. The blood pressure pulse wave measuring device according to claim 1, wherein the pressure detecting means is configured to respond to a pressure in a pressure sensing part that is sensitive to a pressure from a pressure part of the pressure means. 27. A blood pressure pulse wave measuring device comprising: a housing (22) in which is housed; and a pressure sensor (28) housed in the housing and responsive to the diaphragm.  3. The blood pressure pulse wave measuring apparatus according to claim 2, wherein the pressure-sensitive part comprises a flexible container (pressure-sensitive chamber) containing a fluid that communicates with the pressure-receiving side of the diaphragm. Blood pressure pulse wave measuring device, characterized in that:  4. The blood pressure pulse wave measuring device according to any one of claims 1 to 3, wherein the pressurizing section of the pressurizing means pressurizes the mounting device main body so as to fasten the main body to the measurement site. A blood pressure pulse wave measuring device comprising a pressure member.  5. The blood pressure pulse wave measuring apparatus according to claim 4, wherein the pressurizing member is formed of a flexible bag, and the pressurizing unit is filled with a fluid supplied from a pressurizing source. Blood pressure pulse wave measuring device. 6. The blood pressure pulse wave measuring device according to claim 2, wherein the pressurizing member is formed of a flexible bag, and the pressurizing unit is supplied from a pressurizing source. A blood pressure pulse wave measuring device, which is filled with a fluid, and wherein the pressurizing unit and the pressure sensing unit of the pressure detecting unit communicate with each other via a valve.  7. The blood pressure pulse wave measuring device according to claim 1, wherein the pressurizing means is made of a spring arranged inside the wearing device main body.  8. The blood pressure pulse wave measuring device according to claim 1, wherein the pressurizing means is made of an actuator that expands and contracts by an external fluid pressure disposed inside the wearing device main body. Blood pressure pulse wave measuring device.  9. The blood pressure pulse wave measuring apparatus according to claim 1, wherein the mounting device is a pair of clamp members that are tightened so as to press a pressure-sensitive part of the pressure detecting means against a measurement site of the body. Wherein said pressurizing means comprises a spring disposed between handles of said pair of clamp members so as to urge said pair of clamp members in a closing direction. measuring device. '  10. The blood pressure pulse wave measuring apparatus according to claim 1, wherein the mounting device is a pair of clamp members that are tightened so as to press a pressure-sensitive portion of the pressure detection unit against a measurement site of the body. The pressurizing means comprises an actuator configured to expand and contract by external fluid pressure disposed between handles of the pair of clamp members so as to urge the pair of clamp members in a closing direction. Characteristic blood pressure pulse wave measuring device.  11. The blood pressure pulse wave measuring device according to any one of claims 1 to 10, wherein the device is disposed inside the wearing device main body so as to pick up a K sound from a pressure-sensitive portion of the pressure detecting means. A blood pressure pulse wave measuring device, further comprising: a microphone connected to the microphone; and a sound receiving unit connected to the microphone phone and receiving the K sound.  12. The blood pressure pulse wave measuring device according to claim 11, wherein the sound receiving means is a stethoscope. 13. The blood pressure pulse wave measuring device according to claim 11, wherein The blood pressure pulse wave measuring device, wherein the sound means is a sound-to-electric converter for converting the K sound into an electric signal to be transmitted to the arithmetic and measurement means.  1 4. Pressure detecting means (100) having a wearing body (100) attached to the measurement site (b) of the subject's body and a pressure-sensitive portion (30) arranged inside the wearing body. 21) and a pressurizing means (13B) having a pressurizing part (13B) for pressing the body of the wearer to the measuring part of the subject and transmitting the pressure of the measuring part to the pressure-sensitive part of the pressure detecting means. 13 3) A blood pressure pulse wave measuring device comprising:  15. The blood pressure pulse wave measurement wearer according to claim 14, wherein the pressure detection means responds to a pressure in a pressure-sensitive part that is sensitive to a pressure from a pressure part of the pressure means. Blood pressure pulse wave measurement, comprising: a housing (22) in which a diaphragm (27) to be moved is stored, and a pressure sensor (28) stored in the housing and responsive to the diaphragm. Mounting equipment.  1 6. The blood pressure pulse wave measuring device according to claim 14, wherein the pressure-sensitive portion is a flexible container (pressure-sensitive) containing a fluid that communicates with a pressure-receiving side of the diaphragm. A mounting device for measuring a blood pressure pulse wave, comprising:  1 7. The mounting device for blood pressure pulse wave measurement according to any one of claims 14 to 16, wherein the pressurizing portion of the pressurizing means tightens the mounting device body to the measurement site. A blood pressure pulse wave measuring device consisting of a pressure member that pressurizes the blood pressure.  1 8. The apparatus for measuring a blood pressure pulse wave according to claim 17, wherein the pressurizing member is formed of a flexible bag, and the pressurizing means is provided from a pressurizing source. A mounting device for measuring a blood pressure pulse wave, which is filled with a supplied fluid. 1 9. The wearing device for measuring a blood pressure pulse wave according to claim 14, wherein the pressurizing member is made of a flexible bag, and the pressurizing means is supplied from a pressurizing source. Pressure-sensitive part of the pressurizing means and the pressure detecting means Is an apparatus for measuring a blood pressure pulse wave, which is communicated via a valve.  20. The blood pressure pulse wave measurement wearer according to claim 14, wherein said pressurizing means comprises a spring disposed inside said wearer main body. Wave measurement equipment.  21. The wearing device for measuring a blood pressure pulse wave according to claim 14, wherein the pressurizing means comprises an actuator arranged to extend and contract by an external fluid pressure disposed inside the wearing device body. A wearing device for measuring a blood pressure pulse wave, which is characterized in that: '  22. The wearing device for measuring a blood pressure pulse wave according to claim 14, wherein the wearing device is tightened so as to press a pressure-sensitive portion of the pressure detecting means against a measurement site of the body. The pressure means comprises a spring disposed between handles of the pair of clamp members so as to urge the pair of clamp members in a closing direction. Characteristic wearing equipment for blood pressure pulse wave measurement.  23. The wearing device for measuring a blood pressure pulse wave according to claim 14, wherein the wearing device is tightened so as to press a pressure-sensitive portion of the pressure detecting means against a measurement site of the body. The pressurizing means comprises an actuator which expands and contracts by an external fluid pressure disposed between handles of the pair of clamp members so as to bias the pair of clamp members in a closing direction. A wearing device for measuring blood pressure pulse wave, which is characterized in that:  24. The wearing device for blood pressure pulse wave measurement according to any one of claims 14 to 23, wherein a K sound is picked up from a pressure-sensitive portion of the pressure detecting means inside the wearing device body. A blood pressure pulse wave measurement attachment, further comprising: a microphone mouthpiece for receiving a K sound, which is arranged in the microphone.