JP2011125394A - Electronic sphygmomanometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic sphygmomanometer capable of temporarily fixing and holding an arm band at a prescribed measuring position on an upper arm when starting to measure a blood pressure, and capable of accurately measuring the blood pressure. <P>SOLUTION: The electronic sphygmomanometer 1 includes the arm band 2 including a hard cylindrical case 11 for housing an air bag 14, into which the upper arm T of a measured person is inserted, for pressurizing the blood vessel, and a sphygmomanometer body 10, a separate body from the arm band 2, for feeding air into the air bag 14 of the arm band 2. The case 11 of the arm band 2 has a temporary fixing setting part 100 for temporarily fixing the arm band 2 to the upper arm T by changing the diameter of the case 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic sphygmomanometer, and more particularly to an electronic sphygmomanometer in which an armband portion having an air bag and a sphygmomanometer body are separate and the armband portion can be securely attached to the upper arm.

In recent years, pseudohypertension due to white coat hypertension has been a problem in blood pressure measurement for hypertension treatment performed in medical institutions. As a cause of this pseudohypertension, mental instability such as tension and anxiety in front of a doctor in a hospital is considered. On the other hand, attention has been focused on blood pressure values measured alone in a mentally stable home. For this reason, an electronic sphygmomanometer of the type that is used for home blood pressure measurement and is measured by one person is attracting attention.
The problem with this type of sphygmomanometer is how to wear the armband on the arm. When the position of the air bag in the armband is not appropriate for the upper arm or when the wrapping strength is not appropriate for the upper arm, the pressure of the air bag in the armband is not correctly applied to the upper arm, and the blood pressure is high. May be.
In recent years, to solve this, simply by inserting the arm into the cylindrical armband, the air bag in the armband is automatically placed at the correct position of the arm, and blood pressure is measured with the correct wrapping strength. An electronic sphygmomanometer that integrates a sphygmomanometer body and an armband that can be used has been developed.

However, when the user uses a blood pressure monitor of the above type, the arm band for inserting the arm is integrated with the blood pressure monitor main body. If the position is far from the measurer, the measurer is likely to make a measurement in a leaning state. For this reason, the abdomen of the measurer is compressed and the abdominal pressure increases, and as a result, a phenomenon in which the blood pressure increases may be seen. This increase in blood pressure has been pointed out as the occurrence of new pseudohypertension.
Therefore, in order to cope with the inconvenience of the occurrence of such pseudo-hypertension, the hard cylindrical armband part can be separated from the sphygmomanometer body, and even if the place of installation of the sphygmomanometer body is away from the measurer, An electronic sphygmomanometer has been developed that can perform measurement without applying abdominal pressure in a state where a measurer is stretched in a sitting position (see Patent Document 1).

Japanese Patent Laid-Open No. 5-56938

However, in the above-described electronic sphygmomanometer that does not apply abdominal pressure, the armband portion has, for example, a plastic hard case and an air bag disposed in the case, and is relatively heavy. . When measuring the blood pressure, after the operator inserts the upper arm into the armband, the operator must manually hold the armband to prevent the armband from slipping from the predetermined measurement position of the upper arm. Press lightly to fix and press the measurement switch on the sphygmomanometer body side.
For this reason, it is not easy to press the measurement switch on the sphygmomanometer body side while holding the armband part, and if the armband part is displaced from the predetermined measurement position of the upper arm, accurate blood pressure measurement cannot be performed. .
Therefore, in order to solve the above problem, the present invention can temporarily hold the armband portion at a predetermined measurement position of the upper arm on the upper arm when blood pressure measurement is started, and accurate blood pressure measurement can be performed. An object is to provide an electronic blood pressure monitor that can be used.

An electronic sphygmomanometer according to the present invention includes an armband portion having a hard and cylindrical case for housing an air bag for inserting a measurer's upper arm and pressurizing a blood vessel, and the armband portion separately A sphygmomanometer body for sending air to the air bag, and the case of the armband portion is provided with a temporary fixing setting unit for changing the diameter of the case and temporarily fixing to the upper arm It is characterized by being.
According to the above configuration, when blood pressure measurement is started, the armband portion can be temporarily fixed and held at a predetermined measurement position of the upper arm, and accurate blood pressure measurement can be performed.

In the electronic sphygmomanometer according to the present invention, the temporary fixing setting portion may be arranged along an axial direction that is a direction perpendicular to the radial direction of the cylindrical case in the cylindrical case formed of a hard material having elasticity to some extent. A first end that forms one end of the formed ring, and a second end that forms the other end of the ring, and the first end and the second end overlap, A protrusion is formed on one of the first end and the second end of the case, and a recess is formed on the other for elastically detachably fitting the first end. And the second end portion can be changed and held.
According to the above-described configuration, the arm band portion can be easily set to the upper arm at a predetermined measurement position of the upper arm simply by fitting the projection portion into the recess and changing the relative position between the first end portion and the second end portion. It can be stopped and held.

In the electronic sphygmomanometer according to the present invention, the temporary fixing setting portion has a first end that forms one end side of a ring formed by providing an interval along an axial direction that is a direction orthogonal to the radial direction of the cylindrical case. Part, a second end that forms the other end of the ring, one end is fixed to the second end, and the other end is detachably fixed to the first end. It has the space | interval adjustment member which can change and hold | maintain the said space | interval of a 1st edge part and a said 2nd edge part, It is characterized by the above-mentioned.
According to the above configuration, the other end of the distance adjusting member is detachably fixed to the first end of the case, and the arm band is simply reduced by reducing the distance between the first end and the second end. The part can be easily temporarily fixed to the upper arm at a predetermined measurement position of the upper arm and held.

In the electronic sphygmomanometer of the present invention, after the pressure of the air in the air bag reaches the target stop pressure, the Korotkoff sound (K sound) is detected to detect the maximum blood pressure, and the Korotkoff sound (K sound) disappears. And a microphone for detecting the minimum blood pressure.
According to the above configuration, even in an electronic sphygmomanometer of a type that detects blood pressure by Korotkoff sound, the arm band is temporarily fixed and held at a predetermined measurement position of the upper arm, and the microphone is positioned at an accurate position. And accurate blood pressure measurement.

  According to the present invention, when blood pressure measurement is started, an electronic sphygmomanometer that can temporarily hold and hold the armband portion at a predetermined measurement position of the upper arm by a simple operation and can perform accurate blood pressure measurement. In addition, it is possible to take a relaxed and correct measurement posture without pressing the stomach by a simple operation of simply lifting the armband and inserting the upper arm.

It is a perspective view which shows Embodiment 1 of the electronic blood pressure monitor of this invention from the front side. It is a perspective view which shows the electronic blood pressure monitor of FIG. 1 from the rear side. FIG. 3A is a perspective view showing a state in which the armband portion of the electronic sphygmomanometer and the sphygmomanometer body are separated, and FIG. 3B shows a state in which the upper arm of the measurer is inserted into the armband portion. It is a perspective view. It is a perspective view which shows the structural example of an arm band part. It is sectional drawing which shows the example of an internal structure of an arm band part. It is a figure which shows the structural example of the temporary fixing setting part of the main body case of an armband part. 7A shows a state in which the main body case before the blood pressure measurement is expanded, and FIG. 7B shows a case where the main body case is reduced in diameter after the upper arm is inserted into the armband portion 2 in order to measure the blood pressure. FIG. FIG. 8A is a perspective view showing the unit UT of the outer cloth and the air bag, FIG. 8B is a perspective view of the unit UT seen from another direction, and FIG. It is a perspective view which shows the state which folded unit UT. 9A is a perspective view showing an air bag and a microphone, and FIG. 9B is a view showing an air bag, an outer cloth, an inner cloth cover, and a microphone. It is a figure which shows the example of a sheet | seat which forms an air bag. It is a figure which shows the example of a process which forms an air bag. It is a block block diagram of an electronic sphygmomanometer. It is a perspective view which shows preferable Embodiment 2 of the electronic blood pressure monitor of this invention from the front side. It is a figure which shows the structure of the temporary fix | stop setting part in Embodiment 2 of this invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
FIG. 1 is a perspective view showing a preferred embodiment 1 of the electronic blood pressure monitor of the present invention from the front side, and FIG. 2 is a perspective view showing the electronic blood pressure monitor of FIG. 1 from the rear side. 3A is a perspective view showing a state in which the arm band part and the sphygmomanometer body of the electronic sphygmomanometer of FIG. 1 are separated, and FIG. 3B is the arm band part of FIG. It is a perspective view which shows the state which inserted.
The electronic sphygmomanometer 1 illustrated in FIGS. 1 to 3 is also referred to as an automatic electronic sphygmomanometer. As illustrated in FIGS. 1 to 3, the electronic sphygmomanometer 1 includes an armband portion 2 and a sphygmomanometer body 10. The armband part 2 can be separated from the sphygmomanometer main body 10, and even if the installation location of the sphygmomanometer main body 10 is away from the measurer, the measurer can measure in a state where the back is stretched in the sitting position and no abdominal pressure is applied. This is a type of electronic blood pressure monitor. This electronic sphygmomanometer 1 is a device that uses the Rivaloch Korotkoff method as an example of a blood pressure measurement method, and detects blood pressure by detecting the Korotkoff sound (K sound). The armband part 2 and the sphygmomanometer body 10 are separate bodies, and the armband part 2 can be fixed to the sphygmomanometer body 10 as shown in FIGS. 1 and 2, and the armband part 2 is blood pressure as shown in FIG. It is formed so as to be separable from the meter body 10.

  As shown in FIG. 3 (B), this electronic sphygmomanometer 1 is a sphygmomanometer of a type that measures the blood pressure by inserting the upper arm T of the measurer through the insertion opening 11P of the armband portion 2 along the direction D1. is there. The armband part 2 and the sphygmomanometer body 10 are electrically connected by a wire (electric signal line) 3, and the armband part 2 and the sphygmomanometer body 10 are connected by a flexible tube 4 that is an air supply / exhaust passage. Has been.

First, the structure of the sphygmomanometer body 10 will be described with reference to FIGS.
As shown in FIG. 1, the sphygmomanometer body 10 includes a casing 30 and a display unit 31. The casing 30 is a member having a thin internal space made of plastic, for example, and has an inclined upper surface portion 32, a front end surface portion 33, a rear end surface portion 34, side surface portions 35 and 36, and a bottom surface portion 42. .
As shown in FIG. 1, an inclined display portion 31 is disposed on the upper surface portion 32 of the casing 30 so that the measurer can easily confirm the display content of the display portion 31. The casing 30 is provided with a start / stop button 37 as an example of a measurement start operation unit, a memory call / time / alarm setting button 38, a mode selection button 39, and a hollow portion 40. This button is used to start or stop the blood pressure measurement operation when the measurer presses the start / stop button 37.

  In FIG. 1, when setting the time, for example, by simultaneously pressing and holding the memory call / time / alarm setting button 38 and the mode selection button 39, the display unit can be operated as an operation / setting / input function. A time setting screen is displayed at 31, and the time displayed on the time setting screen can be set while being selected by the memory call / time / alarm setting button 38.

  In FIG. 1, for example, by pressing the memory call / time / alarm setting button 38, for example, 100 blood pressure measurement records in the past can be displayed on the display unit 31. The maximum blood pressure value, the minimum blood pressure value, the pulse rate, and the date and time displayed on the display unit 31 can be displayed in order each time the memory call / time / alarm setting button 38 is pressed.

  As shown in FIG. 3, a recessed portion 40 is formed in the central portion of the upper surface portion 32 of the casing 30 along the Y direction. The recessed portion 40 is formed from the central portion of the casing 30 to the rear end surface portion 34. The recessed portion 40 has a semicircular portion 40P and a rectangular portion 40R. A circular start / stop button 37 is arranged at the center. A groove portion 41 is formed in the rectangular portion 40 </ b> R of the recessed portion 40.

As shown in FIG. 3, a magnet 40 </ b> M is disposed in the casing 30 in the vicinity of the start / stop button 37 and the groove portion 41 of the recessed portion 40. The magnet 40M is, for example, a rectangular plate-shaped permanent magnet, but is not particularly limited to a shape, and may be a circular shape or an elliptical shape. Further, the magnet 40M may be exposed to the outside of the casing 30.
The display unit 31 is disposed along the X direction between the recessed portion 40 and the front end surface portion 33 in FIG. For example, a liquid crystal display device can be used as the display unit 31. As shown in FIG. 1, for example, the display unit 31 includes a maximum blood pressure value, a minimum blood pressure value, a pulse rate, a pulse pressure, and a display mark during measurement operation. Various measurement values such as battery replacement display marks can be displayed.

  As shown in FIGS. 1 and 2, the side portions 35 and 36 are formed in a curved surface so that the measurer can easily hold the blood pressure monitor main body 10. The memory call / time / alarm setting button 38 and the mode selection button 39 are arranged in the vicinity of the display unit 31 on the upper surface 32. As shown in FIG. 1, a speaker 43, two pumps (first pump) 44, a pump (second pump) 45, an exhaust valve 46, a control valve 47, and a control system are provided inside the casing 30. A circuit board 48 including the memory unit 69 is disposed. The speaker 43 is provided to output a voice guide or a music guide.

Next, the structure of the armband portion 2 will be described with reference to FIGS. 1 to 3 and FIGS. 4 to 7.
FIG. 4 is a perspective view showing a structural example of the armband portion 2. FIG. 5 is a cross-sectional view showing an example of the internal structure of the armband portion 2. FIG. 6 is a diagram illustrating a structure example of the temporary fixing setting unit 100 of the main body case 11 of the armband unit 2. FIG. 7 is an enlarged view showing the operation of the temporary fixing setting unit 100 of the main body case 11 shown in FIG.
As shown in FIG. 3B, the armband portion 2 can be inserted into the upper arm T as shown in FIGS. 1 and 2 in order to insert and compress the upper arm T of the measurer during blood pressure measurement. It has a substantially cylindrical structure (tubular body) with both ends cut off. Thereby, this armband part 2 does not need to be wound around the upper arm T of the measurer unlike a cloth armband part having a normal hard case, and can be inserted into either the left or right upper arm T. The measurer can easily measure blood pressure.

As shown in FIGS. 4 and 5, the armband portion 2 includes a main body case 11 as a hard and cylindrical case, an air bag (also referred to as a cuff) 14, an outer cloth 16, and an inner cloth cover 17C. is doing.
The body case 11 shown in FIGS. 4 and 5 is an example of a hard and cylindrical case that can be elastically deformed, and is made of, for example, plastic or metal. As shown in FIG. 5, the main body case 11 has a substantially cylindrical structure, and has an opening 11P and an opening 11R. The main body case 11 is formed, for example, so as to taper in the direction D1, and the diameter L1 of the opening 11P is larger than the diameter L2 of the opening 11R. The main body case 11 has, for example, a substantially fan-shaped grip 11H on the opening 11R side.
For example, the operation of inserting the upper arm T of the left arm shown in FIG. 5 into the insertion hole 77 in the D1 direction or removing the upper arm T in the opposite direction can be performed with the gripping part 11H with the right hand. Further, the operation of inserting the upper arm T of the right arm into the insertion hole 77 in the D1 direction or removing the upper arm T in the opposite direction can be performed by holding the holding portion 11H with the left hand. Thereby, the measurer can easily perform the attaching operation or the detaching operation of the armband portion 2 with respect to either the left or right upper arm T. In addition, the sizes of the openings 11P and 11R of the main body case 11 are slightly larger in order to allow the measurer to easily insert the upper arm, so that there is a dimensional margin.

Here, with reference to FIG. 6 and FIG. 7, the structural example of the temporary fixing setting part 100 of the main body case 11 is demonstrated.
6 shows a structural example of the temporary fixing setting unit 100 of the main body case 11 of the armband portion 2, and FIG. 7A shows a state where the diameter of the main body case 11 before blood pressure measurement is expanded, and FIG. B) shows a state where the main body case 11 is reduced in diameter and temporarily fixed after the upper arm is inserted into the armband portion 2 in order to measure blood pressure.
As shown in FIGS. 6 and 7, the main body case 11 has a so-called ratchet-type temporary fixing setting unit 100. As shown in FIGS. 1 to 5, the main body case 11 is not completely cylindrical, and is formed by dividing a part of the main body case 11 along the axial direction (D1 direction), that is, the direction orthogonal to the radial direction of the cylinder. The main body case 11 has a first end 101 that is one end of the ring and a second end 102 that is the other end of the ring when viewed from the cylindrical end as shown in FIG. The first end 101 and the second end 102 are formed in parallel along the direction D1. As shown in FIGS. 6 and 7, the outer surface 103 of the first end portion 101 is in close contact with the inner surface 104 of the second end portion 102, and the first end portion 101, the second end portion 101, Are overlapped with each other and have an overlapping portion BM as shown in FIG.

As shown in FIGS. 6 and 7, a plurality of recesses 112 are formed on the outer surface 103 of the first end 101 along the V direction with the intermediate protrusions 111 </ b> A to 111 </ b> D interposed therebetween. Intermediate protrusions 111 </ b> A to 111 </ b> D are formed so as to protrude in the diameter direction of the main body case 11.
In contrast, one protrusion 121 and a recess 122 formed around the protrusion 121 are formed on the inner surface 104 of the second end 102. As described above, the indented portion 122 is formed in the second end portion 102 to reduce the thickness of the second end portion 102 so that the second end portion 102 is easily elastically deformed. A grip portion 106 is provided at the distal end portion 105 of the second end portion 102, and this grip portion 106 is used by a measurer when the diameter of the main body case 11 is increased or the main body case 11 is reduced in diameter. Hold it with your finger.
The protrusion 121 of the second end 102 abuts against any intermediate protrusion 111A to 111D of the first end 101, so that the diameter of the main body case 11 is increased from the expanded state shown in FIG. The reduced diameter state shown in FIG. 7B can be maintained.

In addition, in order to return from the diameter-reduced state of the main body case 11 shown in FIG. 7 (B) to the diameter-expanded state shown in FIG. 7 (A) along the V2 direction, the measurer grips the second end 102 with his / her finger. Holding 106, the inner surface 104 side of the second end portion 102 is lifted from the outer surface 103 of the first end portion 101 in the E direction. Thereby, the abutting state between the protrusion 121 of the second end 102 and any of the intermediate protrusions 111A to 111D of the first end 101 is released, and at the same time, using the elastic return force of the main body case 11 itself, It is possible to return from the reduced diameter state of the main body case 11 shown in FIG. 7 (B) to the expanded diameter state shown in FIG. 7 (A) along the V2 direction. That is, the intermediate protrusion (111A or the like) has a substantially trapezoidal inclined surface in which one protrusion gradually decreases in diameter toward the outer side of the ring diameter of the cylindrical main body, and protrudes by the outer shape surface. A guide part for guiding the part 121 is formed. This makes it easy to attach and detach.
When the diameter of the main body case 11 is returned to the expanded state shown in FIG. 7A, the main body case 11 is in a state of abutment with the protrusion 121 of the second end 102 and the intermediate protrusion 111D of the first end 101. The diameter does not increase. Since the main body case 11 can be expanded and held in this way, the measurer can easily extract the upper arm from the armband portion 2.

  Returning to FIG. 1 and FIG. 3, a magnetic adsorption plate member 210 as an example of a magnetic adsorption member is provided on the lower portion of the main body case 11. The plate member 210 is, for example, a metal plate, is formed so as to be long along the axial direction of the main body case 11, and is magnetically attracted by the magnet 40 </ b> M of the sphygmomanometer main body 10. The plate member 210 and the magnet 40M constitute a fixing means 250 for fixing the armband portion 2 to the blood pressure monitor main body 10.

The fixing means 250 has such a force that the binding force between the sphygmomanometer body 10 and the armband part 2 is released when the armband part 2 is lifted from the sphygmomanometer body 10. Thereby, when the measurer does not measure blood pressure, the armband portion 2 does not easily roll off the blood pressure monitor main body 10, and when the measurer wants to measure blood pressure, the armband portion 2 is difficult to remove from the sphygmomanometer body 10. Thereby, even if the armband part 2 is a separate body from the sphygmomanometer main body 10, it is easy to use.
More preferably, the force with which the magnet 40M magnetically attracts the plate member 210 can be set so as to exceed the weight of the sphygmomanometer body 10, for example. Thereby, when the measurer carries the electronic sphygmomanometer 1, when the measurer lifts only the armband part 2 without holding the sphygmomanometer body 10, only the sphygmomanometer body 10 from the armband part 2. Inadvertent falling can be prevented.

  Further, as already described, since the plate member 210 is formed to be elongated along the axial direction of the main body case 11, the armband portion 2 is magnetically attracting the blood pressure monitor main body 10. The sphygmomanometer body 11 can be moved in the Y direction along the recessed portion 40 of the sphygmomanometer body 11. As a result, the measurer can move the armband portion 2 with respect to the sphygmomanometer body 10 in the Y direction while maintaining the magnetic attraction force. 2 is retracted, and the inconvenience that the display unit 31 becomes invisible by the armband unit 2 can be solved. For this reason, the measurer can easily confirm the display content of the display unit 31 and the usability is improved.

  Furthermore, as shown in FIG. 1, the start / stop button 37 is located at the lower part of the armband portion 2 when the armband portion 2 is disposed in the recessed portion 40 of the sphygmomanometer body 10. That is, the measurer cannot press the start / stop button 37 when the armband portion 2 is stored. When the measurer removes the armband portion 2 from the depression 40 of the sphygmomanometer body 10 against the magnetic attractive force, the start / stop button 37 is exposed, and the measurer presses the start / stop button 37. Can be pressed.

  The air bag 14 shown in FIGS. 4 and 5 is formed of a stretchable material such as vinyl chloride, urethane, synthetic rubber, or natural rubber. The upper arm T is expanded into the air bag 14 by being inflated by supplying air through the tube 4 by the operation of the first pump 44 and the second pump 45 shown by broken lines in the blood pressure monitor main body 10 shown in FIG. Squeeze. Since the internal pressure of the air bag 14 is reduced at a constant speed, the air can be gradually exhausted from the air bag 14 by the control valve 47, and when the measurement is completed, the air is removed from the air bag 14 by the exhaust valve 46. Can be exhausted quickly.

  The outer cloth 16 shown in FIGS. 4 and 5 is disposed between the outer side of the air bag 14 and the inner side of the main body case 11 and corresponds to an outer member that is a deformable and non-stretchable cloth member. The inner cloth cover 17C shown in FIGS. 4 and 5 is also called cuffing, and can cover the inside of the air bag 14. By arranging this inner cloth cover 17C, the measurer can smoothly insert and remove the upper arm. You can. The inner cloth cover 17C can be detachably disposed inside the air bag 14 described above, and includes a stretchable cloth portion 17D and two O-ring-shaped ring members 17F and 17G. The cloth portion 17D is formed of a slip stretch material such as nylon or spandex that can expand and contract in both the length direction and the circumferential direction.

FIG. 8A is a perspective view showing the unit UT of the outer cloth 16 and the air bag 14, and FIG. 8B is a perspective view of the unit UT seen from another direction. ) Is a perspective view showing a state in which the unit UT is folded.
As shown in FIGS. 8A and 8B, the unit UT can be bent into four to form an opening G having a substantially square cross section. Since the unit UT has the four bent portions 200, the unit UT can be easily folded as shown in FIG. 8C.
9A is a perspective view showing the air bag 14 and the microphone M, and FIG. 9B is a view showing the air bag 14, the outer cloth 16, the inner cloth cover 17C, and the microphone M. As shown in FIG. 9, two microphones M are attached to the air bag 14, and the two microphones M face each other.

Here, a structural example of the air bag 14 will be described.
FIG. 10 shows an example of a sheet for forming the air bag 14.
The sheet SW shown in FIG. 10 is a substantially rectangular plastic sheet, for example, and is formed of, for example, a substantially rectangular plastic sheet that does not have stretchability, for example, a polyurethane sheet. The sheet SW includes a connecting pipe with filter 220, a cord hook 221, four broken line portions 222, joint portions 223 and 224, and two microphone holding portions 225.
The connection pipe 220 connects the ends of the tube 4 shown in FIG. The cord hook 221 hangs the wire 3 and the tube 4 shown in FIG. The joining portions 223 and 224 form the air bag 14 by thermocompression bonding. Each of the microphone holding units 225 can hold the microphone M. The sheet SW can be bent at the four broken line portions 222 to form the air bag 14 having the shape shown in FIG.

FIG. 11 shows an example of a process for forming the air bag 14.
As shown in FIG. 11A, the sheet SW is bent at folding lines 226 and 227 to join the joining portions 223 and 224 as shown in FIG. 11B. Then, as shown in FIG. 11 (C), the air bag 14 is completed by being bent at four broken line portions 222. The air bag 14 includes four side portions 231, 232, 233, and 234. As shown in FIG. 10B, three spacers 240 are arranged in the air bag 14 at intervals. The spacer 240 is a rectangular parallelepiped member that can be elastically deformed, such as a plastic sponge. Thereby, it can prevent that the air bag 14 collapses more than necessary because the spacer 240 is arrange | positioned.

Next, FIG. 12 is a block configuration diagram of the electronic blood pressure monitor 1 of FIG.
A circuit block of the electronic blood pressure monitor 1 shown in FIG. 12 will be described. The circuit block of the electronic blood pressure monitor 1 is shown. As shown by the broken line of the circuit block of the electronic sphygmomanometer 1, the sphygmomanometer body 10 includes a Korotkoff sound (K sound) detection system 50, a pressurization system 51, an exhaust system 52, a pressure detection system 53, and a power supply system. 54, an audio system 55, and a control system 56.

  The control system 56 includes a drive unit 58 of the display unit 31, a timer 59, a memory unit 69, and the like. The drive unit 58 of the display unit 31 controls the display unit 31 to display items to be displayed. The memory unit 69 is a ROM (read only memory) in which a program to be processed by the CPU (central processing unit) of the control system 56 is stored. The timer 59 counts various operation times. The operation unit 57 is electrically connected to the control system 56, and includes the start / stop button 37, the memory call / time / alarm setting button 38, and the mode selection button 39 described above.

  A Korotkoff sound (K sound) detection system 50 in FIG. 12 includes two microphones M of the armband portion 2, a K sound detection circuit unit 60, a noise sensor 15, and a noise sensor detection circuit unit 61. The two microphones M are electrically connected to the control system 56 via the K sound detection circuit unit 60. As shown in FIG. 1, the two microphones M are arranged at positions facing each other (a position near and far from the artery of the upper arm T).

  The two microphones M in FIG. 12 detect the blood flow sound (blood vessel information) of the measurer, and the K sound detection circuit unit 60 detects the K sound from the blood flow sound and transmits the K sound signal to the control system 56. . The control system 56 detects the Korotkoff sound, the generation point and the disappearance point of the Korotkoff sound from the input K sound signal. The noise sensor 15 detects vibration noise that enters the microphone M from the outside, and sends a noise signal to the control system 56 via the noise sensor detection circuit unit 61. Thereby, the control system 56 improves the accuracy of the K sound detection signal by removing noise from the K sound signal.

The control system 56 as a control unit detects a K sound signal. That is, after stopping the blood flow in the blood vessel by pressurization, the pressure is reduced, the pressure at the time when the first K sound signal when the blood flow again is detected is set to the maximum blood pressure value, and further the pressure reduction is continued. When the K cross section is sufficiently expanded and no K sound signal is detected, the pressure at the time when the last K sound signal is detected is set to the minimum blood pressure value. Further, the control system 56 calculates the pulse rate from the appearance interval of the vascular pulsation or the K sound signal obtained from the maximum blood pressure value and the minimum blood pressure value.
A pressure detection system 53 shown in FIG. 12 includes a piping part 63, a pressure sensor 64, and a tube 4. The pressure sensor 64 is electrically connected to the control system 56 via the pressure detection filter 400 and an amplifier, filter, and integration A / D unit 65.

12 includes a first pump 44 and a second pump 45, and a drive unit 62 for the first pump 44 and the second pump 45. In accordance with a command from the control system 56 as a control unit, for example, the drive unit 62 controls the rotation speed of the first pump 44 by PWM (pulse width control) control, and controls the second pump 45 by PWM (pulse width control). The number of revolutions can be controlled by the control. As described above, the first pump 44 and the second pump 45 can be separately driven and controlled by the drive unit 62.
The first pump 44 and the second pump 45 are connected to the air bag 14 of the armband portion 2 through the piping portion 63 of the pressure detection system 53.
In the electronic sphygmomanometer 1, after the inside of the armband portion 2 is pressurized by the first pump 44 and the second pump 45, the pressure sensor 64 is used to evacuate and depressurize the inside of the armband portion 2. At the same time, the Korotkoff sound (K sound) is detected using the microphone M. The electronic sphygmomanometer 1 detects the K sound signal and the generation point and disappearance point of the K sound signal, thereby calculating the maximum blood pressure value and the minimum blood pressure value, and the calculated maximum blood pressure value and the minimum blood pressure value. Can be displayed on the display unit 31.

  Next, the exhaust system 52 will be described. The exhaust system 52 includes two drive units 66 and 67, an exhaust valve (forced exhaust unit) 46, and a control valve (decompression control unit) 47. The exhaust valve 46 and the control valve 47 are arranged in the middle of the piping part 63. The control system 56 commands the drive unit 66 to open and close the exhaust valve 46, and the control system 56 commands the drive unit 67 to open and close the control valve 47.

  The power supply system 54 includes a battery 68, a power supply control unit 69C, and a power supply monitoring unit 70. The battery 68 is, for example, a lithium ion battery that can be repeatedly charged, but the type is not particularly limited, and may be a dry battery or the like. The voltage of the battery 68 is controlled by the power supply control unit 69C and supplied to the control system 56, and also serves as the drive power for the first pump 44 and the second pump 45 and the power supply to the sound control unit 71. The power monitoring unit 70 monitors the remaining amount of the battery 68 and the like. Moreover, a 100V commercial power supply can be used by using an AC adapter.

  The audio system 55 includes an audio control unit 71 and an amplification unit 72. The voice control unit 71 and the amplification unit 72 are controlled by a command from the control system 56. The voice control unit 71 sends voice guidance data or music data to the amplifying unit 72 and amplifies it according to a command from the control system 56, so that the speaker 43 generates a voice announcement and a music guidance announcement. can do.

Next, an example of measurement operation when the measurer performs blood pressure measurement using the electronic blood pressure monitor 1 described above will be described. The blood pressure measurement is performed according to the procedure of the blood pressure measurement program. The blood pressure measurement program has, for example, a normal mode M1, a systolic blood pressure mode M2, and a diastolic blood pressure mode M3. Below, these modes are demonstrated in order.
(Normal mode M1)
The plate member 210 of the main body case 11 of the armband portion 2 shown in FIG. 1 is formed so as to be elongated along the axial direction of the main body case 11 as already described, and the armband portion 2 is formed of this plate member. 210, the magnet 40M of the sphygmomanometer main body 10 is magnetically attracted and coupled to the recessed portion 40 of the sphygmomanometer main body 10. As shown in FIG. 3, the measurer lifts the armband portion 2 from the hollow portion 40 of the sphygmomanometer body 10 against the magnetic attractive force of the magnet 40 </ b> M, thereby lifting the armband portion 2 to the sphygmomanometer body. It can be easily removed from the ten recessed portions 40. Thus, when the measurer measures the blood pressure, the armband portion 2 can be easily detached from the blood pressure monitor main body 10. Thereby, even if the place where the sphygmomanometer main body 10 is installed is away from the measurer, the measurer can easily measure blood pressure in a state where his / her back is stretched and no abdominal pressure is applied.

  As shown in FIG. 1, when the armband portion 2 is placed in the recessed portion 40 of the sphygmomanometer main body 10, the start / stop button 37 is positioned below the armband portion 2, The start / stop button 37 is not exposed to the outside unless the armband portion 2 is lifted and removed from the recessed portion 40 of the sphygmomanometer body 10. As a result, the measurer can press the start / stop button 37 after the armband portion 2 is lifted and is ready to measure through the upper arm T, so the start / stop button 37 is inadvertently not measured. There is no such thing as pushing.

  In a state where the measurer lifts the armband portion 2 from the blood pressure monitor main body 10, the body case 11 of the armband portion 2 is in the most expanded state as shown in FIGS. 6 and 7A. . That is, in the main body case 11 in the diameter-expanded state, the protruding portion 121 of the second end portion 102 is in a state of abutting against the intermediate protrusion 111D of the first end portion 101 due to the elastic force of the main body case 11, and the main body case is no more. The diameter of 11 does not increase. The measurer inserts, for example, the right upper arm from the opening 11P to the opening 11R as shown in FIG. 3B while holding the holding portion 11H of the main body case 11 in the diameter-expanded state. Thus, the measurer can easily insert the right upper arm into the opening of the main body case 11 in the expanded diameter state. This is the same even when the measurer inserts the left upper arm.

Subsequently, the measurer holds the grip portion 106 of the second end portion 102 of the main body case 11 shown in FIG. 7A with his / her finger, and the inner surface 104 side of the second end portion 102 faces the outer surface of the first end portion 101. By lifting from 103 to the E direction, the engagement between the protrusion 121 of the second end 102 and the intermediate protrusion 111D of the first end 101 is released, and the grip portion 106 is lifted in the V1 direction. Since the second end portion 102 is formed with a dent portion 122 and the second end portion 102 is easily elastically deformed, the measurer can easily lift the grip portion 106 in the E direction and also in the V1 direction.
Thereby, as shown in FIG. 7B, for example, the protrusion 121 of the second end 102 and the intermediate protrusion 111A of the first end 101 are engaged by the elastic return force of the main body case 11, and the main body The case 11 is in the most contracted state as shown in FIG. For this reason, the armband part 2 can be temporarily fixed to the upper arm reliably using the reduced diameter of the main body case 11.

  By temporarily fixing the armband portion 2 to the upper arm in this manner, the armband portion 2 that is relatively heavy compared to a normal armband portion made of cloth can be prevented from sliding off the upper arm, and the measurer can When starting the measurement, the armband portion can be temporarily fixed and held at a predetermined measurement position of the upper arm, that is, the two microphones M shown in FIG. 9 are positioned opposite to each other (close to the artery of the upper arm T). It can be accurately placed at a position far from the position). Therefore, the measurer can perform accurate blood pressure measurement using the armband 2.

If the measurer presses the mode selection button 39 shown in FIG. 1 and selects the normal mode M1 after temporarily fixing the armband portion 2 to the upper arm as described above, the measurer selects the start / stop button shown in FIG. 37 is pressed to start blood pressure measurement. The first pump 44 and the second pump 45 in FIG. 1 pressurize the air bag 14 at full speed, and the two microphones M detect the blood flow sound (blood vessel information) of the measurer at full speed until the pulse disappears. The air bag 14 in the armband 2 is pressurized. When the control system 56 determines the disappearance of the pulse, the pressure increase in the armband 2 is stopped.
Then, the inside of the armband 2 is gradually reduced in pressure (for example, 2 to 5 mmHg / second), and the maximum blood pressure value and the minimum blood pressure value are detected. The systolic blood pressure value and the diastolic blood pressure value are displayed on the display unit 31 in FIG. 1, and the pumps 44 and 45 and the exhaust valve 46 are operated to rapidly exhaust the air bag 14 in the armband unit 2. Thus, when the maximum blood pressure value and the minimum blood pressure value can be displayed on the display unit 31, the pressure on the upper arm of the measurer can be immediately eliminated by quickly exhausting the air bag 14 in the armband portion 2. , The burden on the measurer can be reduced.

  After the measurement, in order to return from the reduced diameter state of the main body case 11 shown in FIG. 7B to the enlarged diameter state shown in FIG. 7A along the V2 direction, the measurer grips the second end portion 102 with a finger. Holding the portion 106, the inner surface 104 side of the second end portion 102 is lifted from the outer surface 103 of the first end portion 101 in the E direction. Accordingly, the abutting state between the protruding portion 121 of the second end portion 102 and the intermediate protruding portion 111A of the first end portion 101 is released, and the elastic return force of the main body case 11 is used, and FIG. The diameter of the main body case 11 shown in FIG. 7 can be returned to the diameter-expanded state shown in FIG. When the diameter of the main body case 11 is returned to the expanded state shown in FIG. 7A, the main body case 11 is brought into a state of abutment with the protrusion 121 of the second end 102 and the intermediate protrusion 111D of the first end 101, and the main body case no more. The diameter of 11 does not increase. Thus, after expanding the diameter of the main body case 11, the measurer can easily extract the upper arm from the armband portion 2.

(High blood pressure mode M2)
Further, for example, the measurer inserts the right upper arm from the opening 11P to the opening 11R while holding the grasping portion 11H, and after the measurer temporarily fixes the armband portion 2 to the upper arm as described above, the measurer When the systolic blood pressure mode M2 is selected by pressing the mode selection button 39 shown in FIG. 1, the measurer presses the start / stop button 37 in FIG. 1 to start blood pressure measurement. The pumps 44 and 45 of FIG. 1 pressurize the air bag 14 at full speed, and the two microphones M detect the blood flow sound of the measurer and the air bag 14 in the armband portion 2 at full speed until the pulse disappears. Boost. When the control system 56 determines the disappearance of the pulse, the pressurization of the air bag 14 in the armband 2 is stopped.

Then, the pressure is gradually reduced (for example, 2 to 5 mmHg / second), and the speaker 43 in FIG. 1 audibly changes the pressure value of the air bag 14 in the armband portion 2 for each cuff value at the time of pressure reduction, for example, every 10 mmHg. Announce and detect only systolic blood pressure. Thereafter, the loudspeaker 43 in FIG. 1 announces the maximum blood pressure value and the pulse rate by voice guidance, and operates the first pump 44, the second pump 45, and the exhaust valve 46 so that the air bag 14 in the armband portion 2 is moved. Exhaust suddenly. As a result, the pressure on the upper arm of the measurer can be immediately eliminated by quickly exhausting the inside of the armband part 2 while announcing the maximum blood pressure value and the pulse rate with a voice guide, thereby reducing the burden on the measurer. .
After the measurement, the procedure for returning from the reduced diameter state of the main body case 11 shown in FIG. 7B to the expanded diameter state shown in FIG. 7A along the direction V2 is the same as in the normal mode M1.

(Minimum blood pressure mode M3)
Further, for example, the measurer inserts the right upper arm from the opening 11P to the opening 11R while holding the grasping portion 11H, and after the measurer temporarily fixes the armband portion 2 to the upper arm as described above, the measurer When the mode selection button 39 shown in FIG. 1 is pressed to select the minimum blood pressure mode M3, the measurer presses the start / stop button 37 in FIG. 1 to start blood pressure measurement. The pressure is gradually increased (for example, 2 to 5 mmHg / second), and the speaker 43 in FIG. 1 announces the pressure value of the air bag 14 in the armband portion 2 for each cuff value at the time of pressure increase, for example, every 10 mmHg, Detect minimum blood pressure. Thereafter, when the pulse disappears, the pressurization is stopped, and the speaker 43 in FIG. 3 announces the minimum blood pressure value by voice guidance, and operates the first pump 44, the second pump 45, and the exhaust valve 46 to activate the arm band. The air bag 14 in the section 2 is quickly exhausted.
After the measurement, the procedure for returning from the reduced diameter state of the main body case 11 shown in FIG. 7B to the expanded diameter state shown in FIG. 7A along the direction V2 is the same as in the normal mode M1.

  In addition, by adopting the structure of the temporary fixing setting unit 100 shown in FIGS. 6 and 7 as described above, the size of the diameter of the main body case 11 is the same as that shown in FIG. The diameter of the armband portion 2 can be adjusted in three stages by causing the protruding portion 121 of the two end portions 102 to abut against any of the intermediate protruding portions 111A to 111C of the first end portion 101. However, the structure of the temporary fixing setting unit 100 is not limited thereto, and the diameter expansion state of the main body case 11 may be set in two stages or four or more stages.

(Embodiment 2)
FIG. 13 is a perspective view showing a preferred embodiment 2 of the electronic sphygmomanometer of the present invention from the front side, and FIG. 14 is a diagram showing the structure of the temporary fixing setting unit 150 in the embodiment 2 of the present invention.
The elements of the electronic sphygmomanometer 1A of the second embodiment of the present invention shown in FIG. 13 are substantially the same as the corresponding elements of the electronic sphygmomanometer 1 of the first embodiment of the present invention shown in FIG. A description is given using a reference numeral.
In the electronic sphygmomanometer 1A according to the second embodiment of the present invention shown in FIG. 13, the structure of the temporary fixing setting unit 150 is different from the structure of the temporary fixing setting unit 100 shown in FIG.

FIG. 14A shows a state in which the main body case 11 has been expanded before blood pressure is measured, and FIG. 14B shows that the main body case 11 is contracted after the upper arm is inserted into the armband portion 2 in order to measure blood pressure. A state in which the diameter is temporarily fixed is shown.
As shown in FIGS. 13 and 14, the main body case 11 has a temporary fixing setting unit 150. The main body case 11 is formed by being divided in the D1 direction. The main body case 11 is seen from the cylindrical end portion, and the first end portion 401 which is one end side of the ring and the second end which is the other end side of the ring. Part 402.
That is, a gap SP is formed between the first end 401 and the second end 402. The temporary fixing setting unit 150 includes the first end 401, the second end 402, and the interval adjusting member 403. As shown in FIG. 14, one end of a connection member 404 is connected to the first end 401, and the other end of the connection member 404 is connected to the second end 402. The connecting member 404 is made of, for example, a thin rubber member that can be elastically deformed.

  The distance adjusting member 403 is a material that can be deformed but does not stretch, for example, a plastic plate. One end 403 </ b> B of the interval adjusting member 403 is fixed to the outer surface of the second end 402 via an adhesive 407. A grip portion 406 is provided at the other end of the interval adjusting member 403. Male members 410 and 411 of hook and loop fasteners as detachable fixing means are fixed to a plurality of locations on the inner surface of the interval adjusting member 403. On the other hand, a female member 412 of a hook-and-loop fastener as a detachable fixing means is fixed to the outer surface of the first end 401.

As shown in FIG. 14A, in a state where the diameter of the main body case 11 before blood pressure measurement is expanded, the first end portion 401 and the second end portion 402 are separated and the interval SP is large, and the connecting member 404 is relatively It is in a stretched state. A male member 410 of the surface fastener of the distance adjusting member 403 is detachably fixed to a female member 412 of the surface fastener of the first end 401.
The measurer, for example, inserts the right upper arm from the opening 11P to the opening 11R as shown in FIG. 3B while holding the holding part 11H of the main body case 11 in the expanded diameter state shown in FIG. Thus, the measurer can easily insert the right upper arm into the opening of the main body case 11 in the expanded diameter state. This is the same even when the measurer inserts the left upper arm.

Subsequently, the measurer lifts in the E direction by holding the grip portion 406 of the distance adjusting member 403 shown in FIG. 14A with his / her finger, and from the female member 412 of the surface fastener of the first end 401 to the male of the surface fastener. The member 410 is pulled apart. Then, the interval adjusting member 403 is lifted in the V1 direction, the second end 402 is brought closer to the first end 401 side, and the male member 411 of the hook and loop fastener is moved to the female of the hook and loop fastener as shown in FIG. By fixing to the member 412 in a detachable manner, the main body case 11 is in a reduced diameter state shown in FIG. For this reason, the armband portion 2 can be temporarily fixed to the upper arm using the reduced diameter of the main body case 11.
By temporarily fixing the armband portion 2 to the upper arm in this way, the armband portion 2 can be prevented from sliding off from the upper arm, and when the blood pressure measurement is started, the armband portion is used as the upper arm and the predetermined measurement of the upper arm is performed. The position can be temporarily fixed and held, and an accurate blood pressure measurement can be performed.

After the measurement, in order to return from the reduced diameter state of the main body case 11 shown in FIG. 14B to the expanded diameter state shown in FIG. 14A along the V2 direction, the measurer holds the grip portion 406 with his / her finger. The male member 411 of the hook-and-loop fastener is pulled away from the female member 412 of the hook-and-loop fastener of the first end 401 by lifting in the direction. Accordingly, the first end portion 401 and the second end portion 402 are expanded from the reduced diameter state of the main body case 11 along the V2 direction using the elastic return force of the main body case 11 as shown in FIG. Can be returned to. When the main body case 11 is returned to the expanded state shown in FIG. 14 (A), the upper arm can be easily extracted from the armband portion 2.
By the way, in Embodiment 1 and Embodiment 2 of the present invention described above, when blood pressure is measured by inserting the upper arm into the armband portion, the main body case 11 of the armband portion 2 is temporarily set in accordance with the thickness of the upper arm. The diameter of the main body case 11 can be reduced. For this reason, the embodiment of the present invention can pressurize the upper arm reliably even if the amount of air supplied to the air bag is small as compared with the arm band portion that cannot be adjusted in the conventional diameter, so that the pump can be downsized.

In the electronic sphygmomanometer according to the present invention, the temporary fixing setting unit can temporarily hold and hold the armband portion at a predetermined measurement position of the upper arm on the upper arm when blood pressure measurement is started, so that accurate blood pressure measurement can be performed. . In addition, since the armband portion does not deviate from the predetermined measurement position of the upper arm, accurate blood pressure measurement can be performed, and for the measurer, it is easy to press the measurement start button on the sphygmomanometer body side.
In the first embodiment of the present invention, the armband portion is used as the upper arm by simply fitting the protrusion of the temporary fixing setting portion into the recess and changing the relative position between the first end and the second end. It is possible to simply temporarily fix and hold at a predetermined measurement position.
In Embodiment 2 of this invention, the other end part of the space | interval adjustment member of a temporary fixing setting part is fixed with respect to the 1st end part of a case so that attachment or detachment is possible, and the space | interval of a 1st end part and a 2nd end part is set. By simply making it smaller, the armband portion can be easily temporarily fixed to the upper arm at a predetermined measurement position of the upper arm and held.
In the first and second embodiments of the present invention, the temporary fixing setting unit can temporarily fix and hold the armband portion at a predetermined measurement position of the upper arm to position the microphone at an accurate position. Can be done.
In the electronic sphygmomanometer of each embodiment of the present invention, the armband part can be easily detached from the sphygmomanometer body when attempting to measure, while the armband part is not detached from the sphygmomanometer body when blood pressure measurement is not performed. Can be fixed. For this reason, the measurer can improve usability when measuring blood pressure using an electronic sphygmomanometer.

By the way, this invention is not limited to the said embodiment, A various modified example is employable. For example, in the illustrated example, the grip portion 11H is substantially fan-shaped, but the shape is not limited to this, and any shape can be adopted. The display unit 31 is not particularly limited in type, for example, an organic EL device, a fluorescent display device, or the like other than a liquid crystal display device.
In Embodiment 1 of this invention, a temporary fix | stop setting part has the 1st end part and 2nd end part which were formed along the axial direction in the main body case, and the 1st end part and the 2nd end part overlap. Yes. A recess is formed at the first end of the case, and a protrusion is formed on the second end of the case so as to be detachably fitted to the recess, and the relative relationship between the first end and the second end The position can be changed and held. However, the present invention is not limited thereto, and conversely, the temporary fixing setting portion has a first end portion and a second end portion formed along the axial direction in the main body case, and the first end portion and the second end portion are The first end of the case is formed with a protrusion, and the second end of the case is formed with a recess for detachably fitting the protrusion. The first end and the second end It is also possible to adopt a configuration in which the relative position can be changed and held.
In the embodiment of the present invention described above, the electronic sphygmomanometer uses the Ribaroch Korotkoff method as a blood pressure measurement method, and detects blood pressure by detecting the Korotkoff sound (K sound). Other blood pressure measurement methods such as (oscillometric method) may be adopted.

  DESCRIPTION OF SYMBOLS 1 ... Electronic sphygmomanometer, 2 ... Armband part, 10 ... Blood pressure monitor main body, 11 ... Main body case (an example of a hard and cylindrical case), ..., 11P, 11R ... Opening part, 16 ... outer cloth, 17C ... inner cloth cover, 44 ... first pump, 45 ... second pump, 50 ... Korotkoff sound (K sound) detection system, 51 ..Pressurization system, 52 ... exhaust system, 53 ... pressure detection system, 56 ... control system (control unit), 62 ... pump drive unit, 100 ... temporary fastening setting unit, 101 ... 1st end, 102 ... 2nd end, 111A-111D ... Intermediate protrusion of 1st end, 112 ... Recessed part of 1st end, 121 ... 2nd End projection, 401 ... first end, 402 ... second end, 403 ... interval adjustment member

Claims (4)

An armband having a cylindrical case for containing an air bag for inserting a measurer's upper arm and pressurizing a blood vessel;
A sphygmomanometer body that is separate from the armband and sends air to the air bag,
An electronic sphygmomanometer, wherein the case of the armband portion is provided with a temporary fixing setting unit for temporarily fixing the case to the upper arm by changing the diameter of the case. In the cylindrical case formed of a hard material having elasticity to some extent, the temporary fixing setting portion has one end side of a ring formed along an axial direction that is a direction orthogonal to the radial direction of the cylindrical case. A first end formed and a second end formed on the other end of the ring;
The first end and the second end overlap,
A projection is formed on one of the first end of the case and the second end of the case, and a recess is formed on the other for elastically detachably fitting the projection.
The electronic sphygmomanometer according to claim 1, wherein the electronic sphygmomanometer is configured to be able to change and hold a relative position between the first end and the second end.   The temporary fixing setting portion includes a first end portion that forms one end side of a ring formed by providing an interval along an axial direction that is a direction orthogonal to the radial direction of the cylindrical case, and the other end side of the ring The second end portion and the one end portion are fixed to the second end portion, and the other end portion is detachably fixed to the first end portion, so that the first end portion and the second end portion are fixed. The electronic sphygmomanometer according to claim 1, further comprising a gap adjusting member that can change and hold the gap with the end portion.   After the pressure of the air in the air bag reaches the stop target pressure, Korotkoff sound (K sound) is detected to detect the systolic blood pressure, and the systolic blood pressure is detected by the disappearance of the Korotkoff sound (K sound). The electronic sphygmomanometer according to any one of claims 1 to 3, further comprising a microphone.

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