JP2011125628A - Electronic sphygmomanometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic sphygmomanometer capable of immediately inserting the upper arm of a measuring person to start the measurement of blood pressure when the measuring person uses an arm cuff to measure blood pressure even if the arm cuff is made of a deformable flexible material and taking a relaxed accurate measuring posture without pressing the belly. <P>SOLUTION: The electronic sphygmomanometer 1 has the foldable cylindrical arm cuff 2 permitting the insertion of the upper arm T to supply air to an air bag 14 to thereby pressurize the upper arm T and a sphygmomanometer body 10, and the arm cuff 2 and the sphygmomanometer body 10 are separately formed. The arm cuff 2 has an arm cuff portion shape restoring member 150 made of a shape memory material for restoring the shape of the folded arm cuff 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic sphygmomanometer, and in particular, an arm band part can be separated from a sphygmomanometer body, and even if the place of installation of the sphygmomanometer body is away from the measurer, the measurer stretches his back in the sitting position and applies abdominal pressure The present invention relates to an electronic sphygmomanometer of a type that can be measured in the absence of the condition.

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 arm band that can be used has been developed (see Patent Document 1).

However, if the user uses a sphygmomanometer that integrates the sphygmomanometer body and the armband as described above, the armband part into which the arm is inserted is integrated with the sphygmomanometer body. When the position of the sphygmomanometer body is away from the measurer, such as when it is placed and used, the measurer is likely to perform measurement in a forward bending 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, an electronic sphygmomanometer has a sphygmomanometer body having a deformable and soft armband portion and a pump for sending air to the armband portion. Even if the armband part can be separated from the sphygmomanometer body and the place where the sphygmomanometer body is installed is away from the measurer, measurement should be performed without applying abdominal pressure when the measurer is stretched in the sitting position. A type that can be used has been developed.

JP 2005-237427 A

However, in the electronic sphygmomanometer described in Patent Document 1 described above, the armband portion is made of a soft material that can be deformed as described above. The armband portion must be widened and held so that the upper arm can be inserted.
However, when the arm is inserted into the soft arm band part, it takes time to insert the arm unexpectedly because it is caught at a position such as a heel on the inner surface or clings to the tip of the arm.
For this reason, it is impossible for the measurer to immediately measure blood pressure through the upper arm of the arm band part of the conventional electronic blood pressure monitor, and blood pressure measurement is complicated and unusable.
Therefore, in order to solve the above-mentioned problems, the present invention measures the blood pressure when the measurer uses the armband portion to measure blood pressure even if the armband portion is made of a deformable and soft material. An object is to provide an electronic sphygmomanometer that can immediately insert a person's upper arm and start blood pressure measurement.

An electronic sphygmomanometer according to the present invention includes a foldable cylindrical armband for pressurizing the upper arm by inserting an upper arm and supplying air to an air bag, and a sphygmomanometer body, The belt part and the sphygmomanometer body are formed separately, and the arm belt part is made of a shape memory material that restores the shape of the folded arm belt part. It is characterized by having.
According to the above configuration, even if the armband portion is made of a deformable and soft material, the armband portion can be easily inserted into the user's arm at the time of measurement by the function of the armband shape return member. Therefore, when the measurer uses the armband part to measure blood pressure, the upper arm of the measurer can be immediately inserted and blood pressure measurement can be started. Since the main body is formed as a separate body, it is possible to prevent a posture that presses the stomach of the measurer and to take a relaxed and correct measurement posture.

In the electronic sphygmomanometer according to the present invention, the armband portion shape recovery member is fixed to an outer surface of an outer member that covers the air bag of the armband portion.
According to the above configuration, the armband shape returning member can be easily fixed to the armband portion.

In the electronic sphygmomanometer according to the present invention, the armband portion includes a folded shape maintaining member for maintaining a shape in which the armband portion is folded.
According to the above configuration, when the blood pressure is not measured, the armband portion can be easily kept in a folded state and kept compact by using the folded shape maintaining member.

In the electronic sphygmomanometer according to the present invention, the air bag has a plurality of bent portions along a direction in which the upper arm is passed for folding.
According to the above configuration, the armband portion can be easily folded small using the folded portion against the force exerted by the armband shape returning member.

  According to the present invention, even when the armband is made of a deformable and soft material, when the measurer uses the armband to measure blood pressure, the upper arm of the measurer is immediately inserted. Thus, it is possible to provide an electronic sphygmomanometer that can start blood pressure measurement and can take a relaxed and correct measurement posture without squeezing the stomach.

It is a perspective view which shows preferred Embodiment 1 of the electronic blood pressure monitor of this invention from the front side. It is a disassembled perspective view of the arm band part of an electronic blood pressure monitor. It is a side view which has a partial cross section which shows the internal structure of the arm band part of an electronic blood pressure monitor. It is a figure which shows the example of a shape of the member for a wristband part shape return. It is a figure which shows the example of a shape of the member for a wristband part shape return. 6A is a perspective view showing the unit UT of the outer cloth and the air bag, FIG. 6B is a perspective view of the unit UT as seen from another direction, and FIG. It is a perspective view which shows the state which folded unit UT. FIG. 7A is a perspective view showing an air bag and a microphone, and FIG. 7B 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 block block diagram of an electronic sphygmomanometer. It is the perspective view which shows preferable Embodiment 2 of the electronic blood pressure monitor of this invention from the front side. It is the perspective view which shows preferable Embodiment 3 of the electronic blood pressure monitor of this invention from the front side. It is a figure which shows the other example of a shape of the member for a wristband shape return. It is a figure which shows the other example of a shape of the member for a wristband shape return.

(Embodiment 1)
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a preferred embodiment 1 of an electronic sphygmomanometer of the present invention from the front side, and FIG. 2 is an exploded perspective view of an arm band part of the electronic sphygmomanometer. FIG. 3 is a side view having a partial cross section showing the internal structure of the armband portion of the electronic blood pressure monitor.
The electronic sphygmomanometer 1 shown in FIG. 1 is also referred to as an automatic electronic sphygmomanometer. This is an electronic sphygmomanometer of the type that can be measured without stretching the back and applying abdominal pressure. 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). As shown in FIG. 1, the electronic sphygmomanometer 1 includes an armband portion 2 of a soft cylindrical body made of a deformable and soft material, and a sphygmomanometer body 10. The armband part 2 and the blood pressure monitor main body 10 are separate bodies.

  As shown in FIG. 3, the electronic sphygmomanometer 1 is a type of sphygmomanometer that measures the blood pressure by inserting the upper arm T of the measurer from the insertion opening 11 </ b> R of the armband portion 2 along the direction D <b> 1. As shown in FIG. 1, the armband portion 2 and the sphygmomanometer body 10 are electrically connected by a wire (electric signal line) 3, and the armband portion 2 and the sphygmomanometer body 10 are air supply / exhaust passages. They are connected by some flexible tube 4.

First, the structure of the sphygmomanometer body 10 will be described with reference to FIG.
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. 1, 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 hollow portion 40 is formed from the central portion of the casing 30 to the rear end surface portion 34, and a start / stop button 37 is disposed at the central portion of the hollow portion 40. In addition, a groove portion 41 is formed in the recessed portion 40. When the arm band portion 2 is not used, the wire band 3 and the tube 4 are inserted into the groove portion 41 so that the arm band portion 2 is accommodated when the arm band portion 2 is placed on the sphygmomanometer body 10. Is improving.

  A display unit 31 is disposed along the X direction between the recessed portion 40 and the front end surface portion 33 of FIG. For example, a liquid crystal display device can be used as the display unit 31. As an example, as shown in FIG. 1, 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 FIG. 1, 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 44 and 45, an exhaust valve 46, a control valve 47, a circuit board 48 including a control system, and a memory unit 69 are arranged inside the casing 30. Has been. 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.
As shown in FIG. 1, the armband 2 can insert the upper arm T in order to press the upper arm T of the measurer in a state where the upper arm T of the measurer is inserted through the opening 11R and out of the opening 11P during blood pressure measurement. It has a substantially cylindrical structure (tubular body) with both ends cut off. Thus, unlike the normal armband portion, the armband portion 2 does not need to be wound around the upper arm T of the measurer and can be inserted into either the left or right upper arm T, and the measurer can easily measure blood pressure. Can do.

As shown in FIGS. 2 and 3, the armband portion 2 is a deformable and soft cylindrical body as described above, and is lightweight. The armband portion 2 includes an air bag (also referred to as a cuff) 14, an outer cloth 16, and an inner cloth 17. The outer cloth 16 can cover the outer side of the air bag 14, and the inner cloth 17 can cover the inner side of the air bag 14.
The outer cloth 16 is an outer member that is joined to the outer side of the inner cloth 17 that is a contact cloth portion so as to accommodate the air bag 14 and is formed of a cloth member that is deformable but has no elasticity. The outer fabric 16 can be a deformable but non-stretchable fabric material such as a fabric <201BE> that is difficult to stretch, and the tensile strength is 1445 N / in as measured by the JIS L1096-A method. The width is 827 N / in.

  The inner cloth 17 is a cylinder that covers the inner surface of the air bag 14, has elasticity, is elastic, and is an abutting cloth portion that abuts against the surface to be measured of the upper arm T. The inner fabric 17 can be, for example, a stretchable fabric <22732> that is elastic and has elasticity, and the tensile strength is 94.9 N as measured by the JIS L1096-A method. / In, the width is 150.7 N / in. Tensile elongation is 517% in length and 400% in width as measured by JIS L1096-A method.

  The outer cloth 16 shown in FIG. 1 is disposed outside the air bag 14, and the inner cloth 17 is disposed inside the air bag 14. The outer cloth 16 and the inner cloth 17 are joined by joint portions 77 on both sides, and an air bag 14 is accommodated in a space formed by the outer cloth 16 and the inner cloth 17. The joint portions 77 on both sides are formed by stitching using a thread or bonding using an adhesive.

  Further, as shown in FIG. 3, a value obtained by subtracting the width W along the direction D1 passing the upper arm of the air bag 14 from the width S along the direction D1 passing the upper arm of the outer cloth 16 as the outer member is preferably Is 3 cm or less. In this way, the value of (width S−width W) is set to 3 cm or less because the air bag 14 is not stopped with respect to the outer cloth 16, and the dimension of the outer cloth 16 is given a margin, This is to cope with the expansion and contraction of the air bag 14. If the value of (width S−width W) exceeds 3 cm, the air bag 14 may move in the space formed by the outer cloth 16 and the inner cloth 17, which is not preferable.

  For example, the operation of inserting the upper arm T of the left arm shown in FIG. 5 with respect to the opening 11R in the D1 direction or removing the upper arm T in the opposite direction can be performed with the arm band 2 with the right hand. Further, the operation of inserting the upper arm T of the right arm into the opening 11R in the direction D1 or removing the upper arm T in the opposite direction can be performed by holding the arm band portion 2 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.

  The air bag 14 shown in FIGS. 2 and 3 is made of a stretchable material such as vinyl chloride, urethane, synthetic rubber, natural rubber, or the like. The upper arm T is compressed into the air bag 14 by being inflated by being supplied with air through the tube 4 by the operation of the pumps 44 and 45 indicated by broken lines in the blood pressure monitor main body 10 shown in FIG. 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 detailed structure of the air bag 14 will be described later.

Next, with reference to FIGS. 1 to 3, the armband portion shape restoration member 150 fixed to the outer cloth 16 of the armband portion 2 will be described.
The armband shape restoring member 150 shown in FIG. 1 is automatically formed into a cylindrical shape from the folded state of the armband portion 2 as shown in FIG. 1 to the use state as shown in FIGS. It is a member for enabling to return.

In the example shown in FIGS. 1 to 3, two armband shape restoring members 150 are respectively disposed at the position on the opening 11 </ b> R side and the position on the opening 11 </ b> P side of the outer cloth 16. The arm band shape returning member 150 is, for example, a band-shaped member, and is fixed to the outer surface side of the outer cloth 16 over the entire periphery with, for example, an adhesive.
When the operator pressurizes the arm band portion 2 by hand and folds the arm band portion 2 at the four bent portions 200 as shown in FIG. It can be folded easily and compactly. In order to maintain the folded state of the armband portion 2 in this manner, for example, a folded shape maintaining member 230 such as a rubber ring or a hook-and-loop fastener as shown in FIG. 1 can be used. The folded shape maintaining member 230 is detachably attached to the periphery of the folded armband portion 2, so that the folded shape maintaining member 230 is configured so that the armband portion 2 has a restoring force of the armband portion shape restoring member 150. Therefore, the armband portion 2 can be securely held so as not to return to the cylindrical shape.
When the measurer measures blood pressure, if the folded shape maintaining member 230 is removed from the folded armband portion 2, the two armband portion shape recovery members 150 of the armband portion 2 are shown in FIGS. As shown in FIG. 3, a restoring force for automatically restoring the armband portion 2 to a cylindrical shape is exhibited.

In order to provide such a self-recovery function, the material of the armband portion shape recovery member 150 is a material that can be stretched at a predetermined temperature or higher to exhibit a predetermined rigidity and elasticity, such as a metal material, 2 More than metal alloys, plastics, etc. can be used.
In this embodiment, in order to demonstrate the self-recovery function, the material of the armband portion shape return member is selected and the shape memory material is used, and when the transformation temperature is reached, a predetermined rigidity is exhibited, The memorized shape is restored.
Here, the transformation temperature for shape recovery, that is, the shape recovery temperature, which is higher than the outside air temperature and lower than the body temperature is preferable, and is set in a range of 20 ° C. to 37 ° C., for example. More preferably, the shape recovery temperature is about 25 ° C to 30 ° C.
A suitable alloy in the case of selecting a metal as the material for the armband shape restoring member is a nickel-titanium alloy. In the case of a nickel-titanium alloy, the transformation temperature decreases as the Ni concentration increases. When the Ni composition is 55% to 56%, the transformation temperature can be set within the range of 25 ° C to 40 ° C.
When using a synthetic resin material as a material for the armband shape restoration member, a material made by synthesizing an organic polymer to what is called polybutylene succinate (PBS), shape memory polylactic acid, etc. Various so-called shape memory resins can be selected.
Thus, for example, when a shape memory metal material is selected as the material for the armband shape restoring member, a nickel-titanium alloy or an iron-manganese-silicon alloy is selected, and the martensite transformation point is set. By storing and setting in the above-described blood pressure monitor usage environment, when the armband part 2 is taken out from the storage part 16, it is expanded into the stored shape, and the soft armband part 2 can obtain a predetermined rigidity. Easy handling during measurement.
Moreover, the material used for a stent can be employ | adopted as an arm band part shape restoration member. A stent is a medical device that expands a tubular portion of a human body (blood vessel, trachea, esophagus, duodenum, large intestine, biliary tract, etc.) from the inside of the lumen, and is, for example, a cylindrical tube made of metal. By using the above-mentioned shape memory material as the material, it can be applied as a member for returning the armband shape.
Further, when used in a low temperature environment such as winter, a sheet heater or nichrome wire (not shown) is provided in the vicinity of the armband shape return member 150 of the armband portion 2 to generate heat. The part shape returning member 150 can be brought into a state where the shape can be recovered quickly.

FIGS. 4 and 5 show examples of the shape of the armband shape restoring member 150. The armband portion shape recovery member 150 shown in FIG. 4 is fixed so as to have a continuous waveform shape over the entire periphery of the outer fabric 16 (along the circumferential direction). The armband portion shape recovery member 150 shown in FIG. 5 is fixedly formed so as to be continuous in a rectangular wave shape over the entire periphery of the outer cloth 16.
As illustrated in FIGS. 4 and 5, the armband shape restoring member 150 can form a linear body in a predetermined pattern, but is not limited thereto, and can be formed by punching a plate-like member. In addition, the armband portion shape recovery member 150 may be a simple plate-shaped member. In any case, the shape and manufacturing method of the armband shape restoring member 150 are not particularly limited. In the case of a linear body, if the wire diameter of the nickel-titanium alloy is 0.3 to 1.0 mm, a predetermined rigid body and elasticity can be exhibited. In the case of a plate-like member, a predetermined rigid body and elasticity can be exhibited if the thickness is 50 to 100 μm and the width is 80 to 150 mm. In either case of a linear body or a plate-like member, it is formed substantially once on the circumference of the armband portion 2, but this is not restrictive, and a part of the slit may be provided, or several turns May be.

FIG. 6A is a perspective view showing the arm band portion 2 formed of the outer cloth 16, the inner cloth 17, and the air bag 14, and FIG. 6B shows the arm band portion 2 viewed from another direction. FIG. 6C is a perspective view showing a state in which the armband portion 2 is folded.
As shown in FIGS. 6A and 6B, the armband portion 2 can be bent into four to form an opening G having a substantially square cross section. Since the armband portion 2 has four bent portions 200, the armband portion 2 has a structure that can be easily folded as shown in FIG. These bent portions 200 correspond to thin portions.
7A is a perspective view showing the air bag 14 and the microphone M, and FIG. 7B is a view showing the air bag 14, the outer cloth 16, the inner cloth 17, and the microphone M. As shown in FIG. 7, 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. 8 shows an example of a sheet for forming the air bag 14.
The sheet SW shown in FIG. 8 is, for example, a transparent plastic sheet having a substantially rectangular shape, and is formed of, for example, a substantially rectangular plastic sheet having no 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.

As shown in FIG. 8B, 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.
Moreover, as shown in FIG. 8B, the width (width in the short direction) W of the air bag 14 is preferably 12 cm or more. The reason for this is that if the inner surface side of the air bag 14 is not in contact with the surface to be measured by the measurer at least 8 cm or more, correct blood pressure measurement cannot be performed, so that the inner surface side of the air bag 14 is in contact with 8 cm or more. The width W of the air bag 14 is required to be 12 cm or more. If the width W of the air bag 14 is less than 12 cm, accurate blood pressure measurement may not be possible.

Next, FIG. 9 is a block diagram of the electronic blood pressure monitor 1 of FIG.
A circuit block of the electronic blood pressure monitor 1 shown in FIG. 9 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 volume button 38, and the mode selection button 39 described above.

  The Korotkoff sound (K sound) detection system 50 in FIG. 9 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. 7, 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. 9 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.

A pressure detection system 53 shown in FIG. 9 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 an amplifier, a filter, and an integration A / D unit 65. The control system 56 detects the 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.

The pressurization system 51 includes pumps 44 and 45 and a pump drive unit 62. The drive unit 62 drives and controls the pumps 44 and 45 according to a command from the control system 56. The pumps 44 and 45 are connected to the air bag of the armband portion 2 through the piping portion 63 of the pressure detection system 53.
In the electronic sphygmomanometer 1, when the pressure in the air bag of the armband portion 2 is detected using the pressure sensor 64 while the inside of the armband portion 2 is pressurized by the pumps 44 and 45 and then exhausted and depressurized at a slow speed. 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 control unit 69C and supplied to the control system 56, and also serves as a driving power source for the pumps 44 and 45 and a power source supplied 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 performing blood pressure measurement according to the procedure of the blood pressure measurement program using the electronic blood pressure monitor 1 described above will be described.
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)
When the measurer measures blood pressure, as shown in FIG. 1, when the measurer removes the folded shape maintaining member 230 from the folded armband portion 2, two armband portion shapes of the armband portion 2 are obtained. As shown in FIGS. 1 and 3, the return member 150 can automatically return the armband portion 2 to a cylindrical shape so that the upper arm T can be easily inserted. When the shape of the armband portion 2 is restored, for example, it becomes a cylindrical member in which the openings 11R and 11P having a rectangular cross section are held, and the measurer can easily insert the upper arm T into the armband portion 2. Ready to go.
Next, as shown in FIG. 1, the measurer inserts the right upper arm T from the opening 11 </ b> R of the armband portion 2, for example. When the measurer presses the mode selection button 39 shown in FIG. 1 to select the normal mode M1, the measurer presses the start / stop button 37 of FIG. 1 to start blood pressure measurement. The pumps 44 and 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 and the arm band part 2 is at full speed until the pulse disappears. The air bag 14 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. When the measurer measures blood pressure, the armband part 2 in FIG. 1 is lifted from the sphygmomanometer body 10 and the upper arm T is inserted, so that the place where the sphygmomanometer body 10 is installed is away from the measurer, The measurer can easily measure the blood pressure in a sitting position without stretching the back and applying abdominal pressure.

(High blood pressure mode M2)
When the measurer measures blood pressure, as shown in FIG. 1, when the measurer removes the folded shape maintaining member 230 from the folded armband portion 2, two armband portion shapes of the armband portion 2 are obtained. As shown in FIGS. 1 and 3, the return member 150 can automatically return the armband portion 2 to a cylindrical shape so that the upper arm T can be easily inserted. When the shape of the armband portion 2 is restored, for example, it becomes a cylindrical member in which the openings 11R and 11P having a rectangular cross section are held, and the measurer can easily insert the upper arm T into the armband portion 2. Ready to go.
As shown in FIG. 1, the measurer inserts the right upper arm T from the opening 11R, for example. When the measurer presses the mode selection button 39 shown in FIG. 1 to select the systolic blood pressure mode M2, 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. Announce and detect only systolic blood pressure. Thereafter, the loudspeaker 43 in FIG. 1 announces the maximum blood pressure value and the pulse rate with a voice guide, and operates the pumps 44 and 45 and the exhaust valve 46 to rapidly exhaust the air bag 14 in the armband portion 2. 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. .

(Minimum blood pressure mode M3)
When the measurer measures blood pressure, as shown in FIG. 1, when the measurer removes the folded shape maintaining member 230 from the folded armband portion 2, two armband portion shapes of the armband portion 2 are obtained. As shown in FIGS. 1 and 3, the return member 150 can automatically return the armband portion 2 to a cylindrical shape so that the upper arm T can be easily inserted. When the shape of the armband portion 2 is restored, for example, it becomes a cylindrical member in which the openings 11R and 11P having a rectangular cross section are held, and the measurer can easily insert the upper arm T into the armband portion 2. Ready to go.
As shown in FIG. 1, the measurer inserts the right upper arm T from the opening 11R, for example. Thereafter, when the measurer presses the mode selection button 39 shown in FIG. 1 to select the minimum blood pressure mode M3, the measurer presses the start / stop button 37 of 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 guide, and the pumps 44 and 45 and the exhaust valve 46 are operated to air in the armband 2. The bag 14 is quickly exhausted.

  The electronic sphygmomanometer 1 according to the embodiment of the present invention has a cylindrical armband portion 2 into which an upper arm is inserted and a sphygmomanometer body 10, and the armband portion 2 and the sphygmomanometer body 10 are formed separately. ing. The arm band part 2 is an arm that automatically returns the arm band part 2 to a cylindrical shape so that the air bag 14, the inner cloth 17 that covers the inner surface of the air bag 14, the outer cloth 16, and the upper arm T can be easily inserted. It has a band shape returning member 150. For this reason, the lightweight and compact armband part 2 is used by the measurer even if the armband part is made of a deformable and soft material when the measurer wants to measure blood pressure. When blood pressure is measured, the upper arm of the measurer can be immediately inserted to start blood pressure measurement, and a relaxed and correct measurement posture can be taken without pressing the stomach.

(Embodiment 2)
FIG. 10 is a perspective view showing Embodiment 2 of the electronic sphygmomanometer of the present invention, and FIG. 11 is a perspective view showing Embodiment 3 of the electronic sphygmomanometer of the present invention.
The elements of the electronic sphygmomanometer 1B of the second embodiment of the present invention shown in FIG. 11 and the elements of the electronic sphygmomanometer 1C of the second embodiment of the present invention shown in FIG. 12 are the electronic blood pressure of the first embodiment of the present invention shown in FIG. In the case where the elements are substantially the same as the corresponding elements in total, the same reference numerals are used and the description is replaced.
The armband portion shape recovery member 150B of the armband portion 2 in FIG. 10 is arranged over the entire periphery on the entire outer surface of the outer fabric 16.
The armband portion shape recovery member 150C of the armband portion 2 in FIG. 11 is disposed over the entire circumference in the circumferential direction at a part of the center of the outer cloth 16.
FIGS. 12 and 13 show an armband shape return member 150 shown in FIG. 1, an armband shape return member 150B shown in FIG. 10, and an armband shape return member 150C shown in FIG. A mesh shape as shown in FIGS. 12 and 13 can be employed.

  In the electronic sphygmomanometer according to the embodiment of the present invention, even when the armband portion is made of a deformable and soft material, when the measurer performs blood pressure measurement using the armband portion, the upper arm of the measurer Blood pressure measurement can be started immediately, and a relaxed and correct measurement posture can be taken without squeezing the stomach.

In the electronic sphygmomanometer of the present invention, the armband portion shape restoring member is fixed by being attached to the outer surface of the outer member that covers the air bag of the armband portion. Thereby, the member for returning the armband portion shape can be easily fixed to the armband portion.
In the electronic sphygmomanometer according to the present invention, the armband portion has a folded shape maintaining member for maintaining a shape in which the armband portion is folded. Accordingly, when the blood pressure is not measured, the armband portion can be easily kept in a folded state and kept compact by using the folded shape maintaining member.
In the electronic sphygmomanometer of the present invention, the air bag has a plurality of bent portions along the direction in which the upper arm passes in order to fold the air bag. As a result, the armband portion can be easily folded small using the bent portion against the force exerted by the armband portion shape recovery member.

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 type of the display unit 31 is not particularly limited, such as an organic EL device or a fluorescent display device in addition to a liquid crystal display device.
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.

  When not measuring, the armband part 2 folded as shown in FIG. 1 may be detachably fixed to the upper surface of the sphygmomanometer main body 10 using a fixing means when not measuring. good. As a fixing method of the armband part 2, for example, the armband part and the sphygmomanometer body are detachably fixed by a magnetic attraction force using a magnet and a metal plate, or a tape member having a male member And it can also fix so that attachment or detachment is possible by sticking the tape member which has the female type member which can be mechanically attached to this male type member so that attachment or detachment is possible.

  DESCRIPTION OF SYMBOLS 1 ... Electronic sphygmomanometer, 2 ... Arm band part, 10 ... Blood pressure monitor main body, 11P, 11R ... Opening part of arm band part, 14 ... Air bag, 16 ... Outer cloth , 17 ... Inner cloth, 31 ... Display part, 43 ... Speaker, 150, 150B, 150C ... Armband part shape restoration member, 230 ... Folded shape maintaining member

Claims (4)

A foldable cylindrical armband for pressurizing the upper arm by inserting an upper arm and supplying air to an air bag, and a sphygmomanometer body, the armband part and the sphygmomanometer body, Is formed separately,
The electronic sphygmomanometer, wherein the armband part has an armband part shape restoration member made of a shape memory material that restores the shape of the folded armband part.   The electronic sphygmomanometer according to claim 1, wherein the armband portion shape recovery member is fixed to an outer surface of an outer member that covers the air bag of the armband portion.   The electronic sphygmomanometer according to claim 1, wherein the armband portion includes a folded shape maintaining member for maintaining a shape in which the armband portion is folded.   The electronic sphygmomanometer according to any one of claims 1 to 3, wherein the air bag has a plurality of bent portions along a direction through which the upper arm passes in order to fold the air bag.

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