JP3117972U - Sphygmomanometer - Google Patents

Abstract

An object of the present invention is to realize a sphygmomanometer capable of optimizing pressurization of an armband portion and improving usability even when the highest blood pressure is different between morning and evening measurements or when a plurality of measurers use.
An arm band portion for inserting an upper arm, pressure control units and 71 for introducing and pressurizing air to the arm band portion until blood pressure can be measured, and pressure control units and 71 By the detection units 24 and 72 that detect the blood vessel information in a state where the internal pressure of the armband 2 is controlled by the above, the determination unit 71 that determines the blood pressure value from the blood vessel information detected by the detection units 24 and 72, and the determination unit 71 A display unit 51 that displays the determined blood pressure value, and a control unit 71 that executes a learning mode that corrects the amount of pressurization of the armband during measurement using past measurement values. 5

Description

  The present invention relates to an arm insertion type sphygmomanometer in which an armband portion is built in a housing.

  The conventional sphygmomanometer automatically stops pressurization of the armband at a pressure value necessary for measuring the maximum blood pressure, and automatically reduces the pressure to measure the blood pressure.

Here, in order to prevent re-pressurization when the pressure value is set low or excessive pressure that is set too high, it is impossible to measure blood pressure at normal times. A sphygmomanometer that calculates and displays a difference in blood pressure values has been proposed (see, for example, Patent Document 1).
JP-A-7-136134

  However, although the above prior art is premised on personal use, it is difficult to pressurize the armband appropriately when the blood pressure values of the measurer in the morning and evening are different. In addition, when a plurality of measurers use it, it is difficult to pressurize the armband appropriately because the variation in the maximum blood pressure among the measurers is extremely large.

  The present invention has been made in view of the above problems, and its purpose is to optimize and apply pressure to the armband even when the systolic blood pressure is different in the morning and evening measurements, or even when used by multiple measurers. It is to realize a sphygmomanometer that can reduce the burden on the measurer due to re-pressurization when the pressure is low, and ischemia when the pressure is too high, and can improve usability.

  In order to solve the above-mentioned problems and achieve the object, the sphygmomanometer of the present invention introduces and pressurizes the armband part for inserting the upper arm and air into the armband part until blood pressure can be measured. Pressurization means; detection means for detecting blood vessel information in a state where the internal pressure of the armband is controlled by the pressurization means; determination means for determining a blood pressure value from the blood vessel information detected by the detection means; Display means for displaying the blood pressure value determined by the determination means, and control means for executing a learning mode for correcting the amount of pressurization of the armband at the time of measurement using past measurement values.

  Preferably, the control means determines the amount of pressurization from the previous highest blood pressure value or the average value of three or more highest blood pressure values.

  Preferably, the main body unit having the display means is configured to be attachable to and detachable from an armband unit having a housing provided with the armband portion and a pump portion for introducing air into the armband portion.

  Preferably, the control means does not execute the learning mode when a predetermined switch provided in the armband unit is operated.

  Preferably, the blood vessel information is information related to Korotkoff sounds and oscillating artery waves.

  As described above, according to the present invention, for example, even when the systolic blood pressure is different in the morning and evening measurement, or even when a plurality of measurers use, the pressurization of the armband is optimized and the pressurizing force is applied. Therefore, it is possible to reduce the burden on the measurer due to re-pressing when the pressure is low, and ischemia when the pressure is too high, thereby improving usability.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is an example as means for realizing the present invention, and the present invention can be applied to a modified or modified embodiment described below without departing from the spirit of the present invention.

[Description of device]
FIG. 1 is an external perspective view of a sphygmomanometer according to an embodiment of the present invention as viewed from the front (a) and side (b). FIG. 2 is an external perspective view showing a storage position (a) and an open position (b) of the armrest of the armband unit of the present embodiment. FIG. 3 is a perspective view showing the attachment / detachment state of the main body unit and the armband unit of the present embodiment. FIG. 4 is a front view (a), a top view (b), and a rear view (c) of the main unit of the present embodiment.

  As shown in FIGS. 1 to 4, the sphygmomanometer 1 according to the present embodiment includes an arm band portion 2 that compresses the upper arm during blood pressure measurement, and is housed in a housing 3 having a predetermined self-standing (vertical) outer shape. It consists of an armband unit 10 and a main body unit 50 that is detachably attached to the armband unit 10, and there is no need to wrap an armband around the upper arm of the measurer as in the prior art, and blood pressure measurement is performed on either the left or right upper arm. This is an arm-inserted blood pressure monitor that can be used.

  The housing 3 is formed with an opening 4 for a measurer to insert an arm, and the arm band 2 is disposed on the inner peripheral surface of the opening 4. The armband part 2 consists of a flexible cloth bag or rubber bag that forms an insertion hole for the upper arm. On the upper surface 3a of the housing 3, in addition to the adapter socket 5 for detachably storing the main unit 50, a start switch (SW) 11 for starting the measurement and for stopping the measurement (emergency exhaust) Operation units such as a stop switch (SW) 12 and a storage prohibition switch (SW) 13 are provided. Further, the side wall 3 b of the housing 3 is provided with an AC adapter insertion port 14, and the front surface 3 c is provided with a battery housing 15.

  In addition, an armrest 6 for placing a measurer's elbow is provided on the back surface portion 3 d of the housing 3. The armrest 6 is capable of inserting the upper arm by opening the armband portion 2 and the storage position for closing the armband portion 2 with respect to the hinge portion 7 at the lower back of the housing 3 (see FIG. 2A). And an open position (see FIG. 2B).

  The support surface (front surface) for receiving the arm in the armrest 6 is formed with a concave curved groove portion 9 extending from the hinge portion 7 to the free end portion, and has a function of guiding the upper arm to the correct position. Yes.

  Further, the rear surface 3d of the housing 3 has a shape that matches the outer shape of the armrest 6, and the rear surface of the armrest 6 has a smooth surface. 3 (see FIG. 2B).

  The armrest 6 is held at the storage position by preventing a fall from the storage position to the open position when not in use by providing a moderation when opening and closing by forming a cam-like portion on the hinge portion 7 or the like. And when opening the armrest 6 to an open position, what is necessary is just to push the projection part 8 formed in the armrest 6 back, pressing down the armband unit 10 with one hand. Thereby, when not in use, it can be stored compactly, and space saving can be achieved.

  The armband unit 10 and the main body unit 50 are provided with connectors 9 and 49, respectively. When the main body unit 50 is inserted into an appropriate position with respect to the adapter socket portion 5 of the housing 3, the armband unit 10 is electrically connected. While being connected, the armband part 2 and the pressure detection part 72 are physically connected in the state which prevented the leakage of the air to the exterior.

  The connectors 9 and 49 have a power supply terminal for supplying power from the armband unit 10 to the main body unit 50, a signal terminal for transferring control signals between the both units, and the connection of the main body unit 50 to the armband unit 10. A terminal for confirmation is provided, and when the main unit 50 is inserted into an appropriate position with respect to the adapter socket portion 5 of the housing 3, it is electrically connected to the armband unit 10 to be turned on, and the time and date are displayed on the display portion. The date is displayed and an audible alarm sounds. The adapter socket portion 5 holds the main unit 50 so as to be inclined rearward with respect to the upper surface portion 3 a of the housing 3.

  On the front part of the main unit 50, a first display unit 51 for displaying a maximum blood pressure value, a minimum blood pressure value, a pulse, and a pulse pressure, and past measurement results (blood pressure value and measurement date and time) for a predetermined number of times from the latest one. A second display unit 52 that simultaneously displays (20 times) as a graph is arranged in parallel. The first and second display portions 51 and 52 are both LCD panels. In addition, an average switch (SW) 53 for displaying an average value of blood pressure values for a predetermined number of times (for example, 20 times) recently measured, in order from the latest blood pressure value, is provided at the lower part of the front portion of the main unit 50. A graph movement switch (SW) 54 is provided for selecting an arbitrary graph from a plurality of graphs in which the maximum blood pressure value and the minimum blood pressure value are displayed in a band shape. The average switch 53 also serves as a determination switch (SW) for setting time and the like.

  Further, on the upper surface of the main unit 50, a display ON switch (SW) 55 for turning on / off the power source of the main unit 50 and turning on / off the display units 51 and 52, and a user changeover switch 56 for switching a measurer. A month display switch (SW) 57 for displaying an average value of blood pressure values for each month, and a display changeover switch (SW) 58 for switching each display or all display of morning / evening blood pressure values, pulse and pulse pressure are provided. Yes. The user changeover switch 56 can be set to either A or B (that is, for two persons), and by setting it to the A or B side, the measurement results and graphs of either measurer are displayed.

  Also, on the back surface of the main unit 50, a battery storage unit 59, a reset switch 60 for resetting the main unit 50 and erasing stored measurement data, a time / alarm setting changeover switch for setting a clock or an alarm time (SW) 61, an alarm ON / OFF switch 62 is provided for sounding an alarm at a preset time and notifying the measurer of the measurement time.

  Each function of the main unit 50 described above can be realized in either a state in which the main unit 50 is attached to the armband unit 10 or a single state in which the main body unit 50 is detached from the armband unit 10.

  In addition to the measurement value and the trend graph, the first display unit 51 and the second display unit 52 display a character indicating that measurement is being performed, a blinking display of the graph being measured, and the like. In addition, other displays such as pressurization and decompression (exhaust) are also performed.

  FIG. 5 is a block diagram of a sphygmomanometer according to an embodiment of the present invention.

  As shown in FIG. 5, the armband unit 10 includes a pump unit 21 that supplies air to the armband unit 2 at the start of blood pressure measurement, and air in the armband unit 2 pressurized to a predetermined pressure at a constant speed. Decompression control unit 22 that depressurizes, forced exhaust unit 23 that forcibly exhausts the air inside the armband unit 2, a microphone unit 24 that detects a blood flow sound of the measurer, and vibration noise that enters the microphone unit 24 from the outside. A noise sensing unit 25 for detection is provided. The microphone unit 24 is built in the armband unit 2. The noise sensing unit 25 is composed of a vibration sensor such as a buzzer plate, and detects vibration transmitted from the measurement table on which the armband unit 10 is placed or vibration that enters when the housing 3 is touched as vibration noise.

  When blood pressure is measured by the Korotkoff sound method, the armband part 2 has a pair of (two) microphone parts 24 facing each other with respect to the opening part 4 (positions close to and far from the arteries of the upper arm). Is arranged. The vibration sensor is disposed in the housing 3 at a position close to one of the microphone sections 24 (a position far from the artery of the upper arm), and it has been found that the microphone section 24 responds to vibration noise similar to the vibration sensor. For this reason, this one microphone part 24 can be used also as a vibration sensor, and a vibration sensor can also be abolished.

  Further, the armband unit 10 includes an armband unit power supply unit 26 and an AC adapter unit 27 in addition to the above-described start switch 11, stop switch 12, and memory prohibition switch 13. The armband unit power supply unit 26 includes a plurality of (four) AA batteries stored in the battery storage unit 15 described above, and constitutes a DC 6V DC power supply. The AC adapter unit 27 is connected to the above-described insertion port 14 to constitute an AC power supply with a rated voltage of 100V.

  On the other hand, the control unit 71 is mounted on the main unit 50. The control unit 71 includes a pressure detection unit 72 that detects the pressure inside the armband unit 2, a filter amplifier unit 73 that performs signal processing on the detection signal of the microphone unit 24, a pump drive unit 74 that drives the pump unit 21, and a decompression unit. A pressure reducing valve driving unit 75 for driving the pressure reducing valve of the control unit 22, an exhaust valve driving unit 76 for driving the exhaust valve of the forced exhausting unit 23, a filter amplifier unit 77 for processing a detection signal of the noise sensing unit 25, a main unit power supply Unit 78, armband unit power supply unit 26, AC adapter unit 27, power supply control unit 79 for controlling main unit power supply unit 78, clock circuit 80 having a clock function, nonvolatile memory for storing blood pressure values and measurement time data Etc., an external device such as a personal computer (PC) by means of a memory unit 81, a buzzer unit 82 for generating an alarm sound, RS232C, etc. The communication unit 83 is connected to control the communication.

  The pressure detection unit 72 converts and amplifies the internal pressure of the armband unit 2 into an electric signal, converts the pressure into a digital signal by A / D conversion, and outputs the digital signal to the control unit 71. The digital signal input to the control unit 71 is sequentially converted into a pressure value and output to the display units 51 and 52 as a display signal.

  The filter amplifier unit 73 converts the detection signal from the microphone unit 24 into an electrical signal, amplifies it, converts it into a digital signal by A / D conversion, and outputs it to the control unit 71. When performing blood pressure measurement by the Korotkoff sound method, the control unit 71 detects the Korotkoff (K) sound and its generation point and extinction point from the digital signal input to the control unit 71, whereby the blood pressure value (maximum blood pressure and Diastolic blood pressure) is calculated and displayed on the display units 51 and 52 as a display signal. In the case of the pressure pulse wave, the highest blood pressure and the lowest blood pressure are calculated by known pressure detection and pulse wave detection / calculation, and output and displayed on the display units 51 and 52.

  Further, the control unit 71 calculates the pulse rate from the vascular pulsation (vibration artery wave) and / or the appearance interval of the K sound obtained from the pressure value, and outputs the pulse rate together with the blood pressure value to the display units 51 and 52 as a display signal.

  Further, the control unit 71 calculates the pulse pressure from the difference between the maximum blood pressure value and the minimum blood pressure value, and when the pulse pressure display operation is performed by the display changeover switch 58, it is output to the display units 51 and 52 as a display signal. To do.

  The filter amplifier 77 amplifies the noise component filtering and the filtered signal component with respect to the detection signal of the noise sensing unit 25 and outputs the amplified signal component to the control unit 71.

  The pump drive unit 74, the pressure reducing valve drive unit 75, and the exhaust valve drive unit 76 drive the pump unit 21, the pressure reduction control unit 22, and the forced exhaust unit 23 based on control signals from the control unit 71, respectively.

  The power supply control unit 79 uses the AC adapter unit 27 or the armband unit power supply unit 26 (AC adapter priority) when the main unit 50 is connected to the armband unit 10, and is not connected to the armband unit 10. Only the power supply system is switched to use the main unit power supply unit 78.

  The main unit power supply 78 includes a plurality of (two) lithium button batteries stored in the battery storage 59 described above, and is mainly used as a backup power supply for the memory 81.

  The memory unit 81 stores the measured values of the users A and B set by the user changeover switch 56 in different areas. Further, the memory unit 81 reads out the measured values of the users A and B set by the user changeover switch 56 and outputs them to the control unit 71. The memory unit 81 has a capacity capable of storing measurement values of about 730 times (raw data for 3 years or monthly average data for 60 months by measurement twice a day (morning and evening)).

  Furthermore, the control unit 71 includes the first display unit 51, the second display unit 52, the average switch 53, the graph movement switch 54, the display ON switch 55, the user changeover switch 56, the month display switch 57, the display changeover switch 58, A reset switch 60, a time / alarm setting changeover switch 61, and an alarm ON / OFF switch 62 are connected.

  The control unit 71 includes a CPU, a ROM, a RAM, an interface circuit, and the like. In this embodiment, the Rivaroch Korotkoff method is applied as a blood pressure measurement method, but other measurement methods such as a pressure pulse wave (oscillometric method) can also be applied. In this case, the microphone unit 24 is not necessary. The control unit 71 inputs an operation signal from each switch described above according to the procedure of the blood pressure measurement program stored in the ROM. Then, the control unit 71 outputs drive signals to the pump drive unit 74, the pressure reducing valve drive unit 75, and the exhaust valve drive unit 76 based on the detection signals from the sensors 24, 25, and 72. Further, the control unit 71 obtains values such as blood pressure and pulse from the K sound signal of the microphone unit 24, stores these values in the memory unit 81, and outputs a display signal to the display units 51 and 52. Further, when the vibration noise detected by the noise sensing unit 25 is greater than or equal to a predetermined value, the control unit 71 cancels the K sound signal detected by the microphone unit 24 and removes the influence of the vibration noise.

  The main unit 50 can be connected to an external device such as a PC or a printer, or a measuring device such as a thermometer, a weight meter, a blood glucose level measuring device, or a pedometer via the communication unit 83, and inputs each measurement data. Then, it can be stored in the memory unit 81, output to a printer, or downloaded to a PC. Therefore, for example, a doctor can easily print out a blood pressure value measured at home from a main unit owned by the measurer or download it to a PC.

[Description of operation]
6 and 7 are flowcharts showing a blood pressure measurement operation by the sphygmomanometer according to the embodiment of the present invention.

  The following steps are realized by the CPU (arithmetic processing unit) of the control unit 71 executing a program stored in the ROM.

  In FIG. 6, when the start switch 11 is pressed, initial setting is executed (S101). Next, the display units 51 and 52 are inspected (all segments are turned on for about 1 second) (S102). Next, it is confirmed that the internal pressure is not applied to the armband portion 2, and the pressure value in this state is set to zero (S103). Thereafter, pressure display on the display units 51 and 52 is started (S104).

  Next, the exhaust valve of the forced exhaust unit 23 is closed, and the pump unit 21 is operated to start pressurization (S105). Next, processing for optimizing the pressure value of the armband portion 2 pressurized by the pump portion 21 is performed (S201). Here, if the appropriate pressure value is reached (S106), pressurization by the pump unit 21 is stopped (S107). Next, decompression control by the decompression control unit 22 is started (S108), and a blood pressure measurement operation is started (S109). Further, if it is determined that the pressurization is insufficient during the pressure reduction control (S110), repressurization is performed (S111), and the pressure reduction control is started again (S108).

  In the pressurization optimization process (pressurization learning mode) in S201, as shown in FIG. 9, the control unit 71 reads the systolic blood pressure previously measured for each measurer set by the user changeover switch 56 (S202). . Then, if the pressure value A at the time of measuring the maximum blood pressure is equal to or less than the predetermined value A1, the control unit 71 optimizes the pressure value A by adding the correction value α (S203, S204), and when the pressure value A becomes a new pressure value A + α. The pump unit 21 is controlled via the pump drive unit 74 so as to stop the pressurization (S205, S106).

  Instead of the pressure optimization process, if the time when the start switch 11 is pressed (or the alarm setting time by the switch 61) is morning (for example, 5:00 to 9:00), it is measured in the past. The correction value β is added to the pressure value B corresponding to the average value (for example, the average value of the past 3 to 10 times) of the morning systolic blood pressure for the predetermined number of times, and the evening time (for example, 17: 00 to 21: 00), the correction value β is added to the pressure value B corresponding to the average value of the systolic blood pressure in the past evening to optimize, and the pump driving unit 74 is configured to stop the pressurization when the pressure value becomes a new pressure value B + β. You may control the pump part 21 via. Instead of using the morning and evening time information, it may be realized by providing a switch for the measurer to arbitrarily switch between morning and evening at the start of measurement.

  In addition, by pressing the storage prohibition switch 13 within a predetermined time after the start switch 11 is pressed, the pressurization optimizing process can be canceled.

  In S112 of FIG. 7, the K sound signal is detected, and the pressure at the time when the first K sound signal is detected is set to the maximum blood pressure. Further, when the pressure reduction is continued and the K sound signal is not detected, the pressure at the time when the last K sound signal is detected is set to the minimum blood pressure (S113). In S113, the pulse rate is calculated from the blood vessel pulsation and / or the appearance interval of the K sound obtained from the blood pressure value.

  When the minimum blood pressure is set, the exhaust valve of the forced exhaust section 23 is opened to stop the pressure reduction control (S114), and the blood pressure value and the pulse rate are displayed simultaneously (S115). Visually, as illustrated in FIG. 10A, the first display unit 51 displays numerical values of the maximum blood pressure, the minimum blood pressure, and the pulse rate that are the current measurement results, and the second display unit 52 displays the values. The current measurement result (length from systolic blood pressure to systolic blood pressure) is displayed blinking in a graph. Further, as illustrated in FIG. 10B, the measurement results up to the latest 20 times are displayed in the graph in order on the second display unit 52 every time measurement is performed.

  Thereafter, when the measurement is continued, the start switch 11 is pushed (S116), the stop switch 12 is pushed, or the measurement result is displayed in S118.

  Then, when a predetermined time (second) γ elapses without the stop switch 12 being pressed, the power is turned off and this flow is finished (S117 to S119).

  Further, the control unit 71 performs the battery check shown in FIG. 8 in the initial setting of S101.

  In FIG. 8, when the output voltage V of the armband unit power supply unit 26 falls below the specified value X (3.7 ± 0.2 V), the battery replacement mark blinks (S121, S122), and the specified value Y (X− When the voltage is lower than 0.1 ± 0.05 V), the pump unit 21 is stopped, the exhaust valve of the forced exhaust unit 23 is opened, the armband unit 2 is rapidly exhausted, and the battery replacement mark blinks (S123 to S126). ).

  According to the above-described embodiment, even when the systolic blood pressure is different in the morning and evening measurement, or even when a plurality of measurers use, the applied pressure of the armband part 2 is appropriate to the pressure value necessary for measuring the systolic blood pressure. Therefore, it is possible to reduce the burden on the measurer due to re-pressing when the applied pressure is low and ischemia when the applied pressure is too high, thereby improving usability.

It is the external appearance perspective view which looked at the blood pressure meter of the embodiment concerning the present invention from the front (a) and the side (b). It is an external appearance perspective view which shows the accommodation position (a) and open position (b) of the armrest of the armband unit of this embodiment. It is a perspective view which shows the attachment or detachment state of the main body unit and armband unit of this embodiment. It is the front view (a), top view (b), and back view (c) of the main body unit of this embodiment. 1 is a block diagram of a sphygmomanometer according to an embodiment of the present invention. It is a flowchart which shows the blood-pressure measurement operation | movement by the blood pressure meter of this embodiment. It is a flowchart which shows the blood-pressure measurement operation | movement by the blood pressure meter of this embodiment. It is a flowchart which shows the battery check by the blood pressure meter of this embodiment. It is a flowchart which shows the pressurization optimization process by the blood pressure meter of this embodiment. It is a figure which shows the example of a display of the measurement result in the main body unit of this embodiment (a), (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blood pressure monitor 2 Arm band part 3 Housing 4 Opening part 5 Adapter socket part 6 Armrest 7 Hinge part 8 Projection part 9 Groove part 10 Arm band unit 11 Start switch (SW)
12 Stop (emergency exhaust) switch (SW)
13 Memory prohibition switch (SW)
14 AC adapter insertion port 15 Battery storage unit 21 Pump unit 22 Decompression control unit 23 Forced exhaust unit 24 Microphone unit 25 Noise sensing unit 26 Armband unit power supply unit 27 AC adapter unit 50 Main unit 51 First display unit 52 Second Display 53 Average switch (SW)
54 Graph movement switch (SW)
55 Display ON switch (SW)
56 User changeover switch 57 Month display switch (SW)
58 Display switch (SW)
59 Battery compartment 60 Reset switch (SW)
61 Time / alarm setting selector switch (SW)
62 Alarm ON / OFF switch (SW)
71 control unit 72 pressure detection unit 73 filter amplifier unit 74 pump drive unit 75 pressure reducing valve drive unit 76 exhaust valve drive unit 77 filter amplifier unit 78 main unit power supply unit 79 power supply control unit 80 clock circuit 81 memory unit 82 buzzer unit 83 communication unit

Claims (5)

An armband for inserting the upper arm;
Pressurizing means for introducing and pressurizing air to the armband until a blood pressure can be measured;
Detecting means for detecting blood vessel information in a state where the internal pressure of the armband is controlled by the pressurizing means;
Determining means for determining a blood pressure value from the blood vessel information detected by the detecting means;
Display means for displaying the blood pressure value determined by the determining means;
A sphygmomanometer, comprising: a control unit that executes a learning mode in which a pressurization amount of the armband at the time of measurement is corrected using a past measurement value.   2. The sphygmomanometer according to claim 1, wherein the control unit determines a pressurization amount from an immediately preceding highest blood pressure value or an average value of three or more highest blood pressure values.   The main body unit having the display means is configured to be detachable with respect to an armband unit having a housing provided with the armband portion and a pump portion for introducing air into the armband portion. Item 2. The blood pressure monitor according to Item 1.   The sphygmomanometer according to claim 3, wherein the control means does not execute the learning mode when a predetermined switch provided in the armband unit is operated.   The sphygmomanometer according to any one of claims 1 to 4, wherein the blood vessel information is information relating to at least one of Korotkoff sounds and swaying arterial waves.

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