JP4927379B2 - Sphygmomanometer - Google Patents

Description

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

Conventionally, there is a sphygmomanometer in which an armband portion and a main body portion are separated and the armband portion is built in a housing having a predetermined outer shape (see, for example, Patent Documents 1 and 2). And in patent document 1, it is comprised so that a measurement result may be transmitted to a main-body part from an arm-band part by communicating an arm-band part and a main-body part by radio | wireless. Moreover, in patent document 2, it is comprised so that a wristband part and a main-body part may transmit a measurement result to a main-body part from a wristband part by communicating by radio | wireless or wire (cable).
Japanese Patent Laid-Open No. 5-56938 JP 2000-83912 A

  Here, a sphygmomanometer in which the armband unit including the armband portion for inserting the upper arm and a pressure mechanism for the armband portion and the main body unit including the display panel are separated and independent has been proposed. Absent. Further, when the armband unit and the main body unit are configured separately and independently, it is necessary to prevent usability from being deteriorated.

  The present invention has been made in view of the above problems, and an object thereof is to separate an armband unit including an armband portion for inserting an upper arm and a pressurizing mechanism for the armband portion, and a main body unit including a display panel and the like. This is to realize a blood pressure monitor that is easy to use.

  In order to solve the above-described problems and achieve the object, the sphygmomanometer according to the present invention includes a housing provided with an arm band part for inserting the upper arm, and air to the arm band part until blood pressure can be measured. A pressure means for introducing and pressurizing; a detecting means for detecting blood vessel information in a state where the internal pressure of the armband is controlled by the pressurizing means; and determining a blood pressure value from the blood vessel information detected by the detecting means. A display means for displaying the blood pressure value determined by the determination means, and an armband unit having the housing and the pressurizing means, and a body unit having the display means are separated and independent. And configured to enable wireless communication between the armband unit and the main body unit, and the armband unit is provided with a control unit, and the control unit executes initial setting when instructed to start blood pressure measurement. And the display hand After confirming that no internal pressure is applied to the arm band, and setting the pressure value in this state to zero, the pressure display on the display means is started, and blood pressure measurement is started. After that, when the output voltage of the battery as the power supply unit of the armband portion falls below the first specified value, the battery replacement mark blinks, and when the output voltage falls below the second specified value lower than the first specified value. Pressurization by the pressurizing means is stopped, the armband portion is quickly exhausted, and a battery replacement mark is displayed blinking.

  Preferably, the armband unit and the main body unit can communicate with each other using infrared rays or radio waves.

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

  As described above, according to the present invention, the armband unit including the armband portion for inserting the upper arm and the pressure mechanism for the armband portion, and the main body unit including the display panel are configured separately. In addition, since the armband unit and the main unit are connected so as to be capable of wireless communication, a user-friendly sphygmomanometer can be realized.

  In addition, since it is not necessary to connect the armband unit and the main unit by inserting a connector or the like, there is no need for poor connection or cleaning due to dirt or dust on the connector, which has been a problem in the past, and convenience is improved. .

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. 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 front view (a), a top view (b), and a rear view (c) of the main unit of the present embodiment.

  As shown in FIG. 1 to FIG. 3, the sphygmomanometer 1 of 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. The armband unit 10 and the main body unit 50 capable of wireless communication with the armband unit 10 are configured separately, and there is no need to wrap the armband around the upper arm of the measurer as in the prior art. This is an arm insertion type sphygmomanometer that can measure blood pressure even in the upper arm.

  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 portion 3a of the housing 3, operations such as a start switch (SW) 11 for starting measurement, a stop switch (SW) 12 for stopping measurement (emergency exhaust), a memory prohibition switch (SW) 13 and the like Is 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. 2A).

  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 main unit 50 is provided with a communication unit 84 (see FIG. 4), which will be described later, and transmits infrared rays and radio waves (for example, Bluetooth) to and from the communication unit 28 (see FIG. 4) provided in the armband unit 10. The used wireless communication is possible.

  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.

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

  As shown in FIG. 4, 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.

  Furthermore, in addition to the start switch 11, stop switch 12, and memory prohibition switch 13 described above, the armband unit 10 includes infrared rays and power between the armband unit power supply unit 26, the AC adapter unit 27, the main unit 50, and external devices. A communication unit 28 that enables wireless communication using radio waves is provided. 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 source. 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.

  The storage prohibition switch 13 presses the storage prohibition switch 13 after pressing the start switch 11 (after the start of measurement) or within a predetermined time after displaying the measurement result. The memory unit 81 has a function of preventing storage.

  The armband unit 10 is equipped with a control unit 31. The control unit 31 includes a pressure detection unit 32 that detects the pressure inside the armband unit 2, a filter amplifier unit 33 that performs signal processing on the detection signal of the microphone unit 24, a pump drive unit 34 that drives the pump unit 21, and a decompression unit. A pressure reducing valve driving unit 35 for driving the pressure reducing valve of the control unit 22, an exhaust valve driving unit 36 for driving the exhaust valve of the forced exhausting unit 23, a filter amplifier unit 37 for processing a detection signal of the noise sensing unit 25, and an armband unit A power supply unit 26 and an AC adapter unit 27 are connected.

  The pressure detection unit 32 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 31. Digital signals input to the control unit 31 are sequentially converted into pressure values and transmitted to the main unit 50 via the communication unit 28.

  The filter amplifier unit 33 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 31. The control unit 31 calculates the systolic blood pressure and the diastolic blood pressure by detecting the Korotkoff (K) sound and its generation and disappearance points from the digital signal input to the control unit 31, and the main body via the communication unit 28 Send to unit 50.

  Further, the control unit 31 calculates the pulse rate from the vascular pulsation (vibrating artery wave) and / or the appearance interval of the K sound obtained from the pressure value, and transmits the pulse rate to the main unit 50 via the communication unit 28.

  The filter amplifier unit 37 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 31.

  The pump drive unit 34, the pressure reducing valve drive unit 35, and the exhaust valve drive unit 36 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 31, respectively.

  On the other hand, the control unit 71 is mounted on the main unit 50. The control unit 71 includes a main unit power supply unit 78, a clock circuit 80 having a clock function, a memory unit 81 including a non-volatile memory that stores blood pressure values and measurement time data, and a buzzer unit 82 that generates an alarm sound. A communication unit 84 that enables wireless communication using infrared rays or radio waves between the armband unit 10 and an external device is connected.

  The control unit 71 converts the pressure value inside the armband unit 2 received from the armband unit 10 into a display signal and outputs the display signal to the display units 51 and 52.

  Further, the control unit 71 calculates the systolic blood pressure and the diastolic blood pressure by detecting the Korotkoff (K) sound, the generation point and the extinction point thereof from the detection signal by the microphone unit 24 received from the armband unit 10, and displays it. It outputs to the display parts 51 and 52 as a signal.

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

  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 main unit power supply unit 78 includes a plurality (two) of lithium button batteries stored in the battery storage unit 59 described above.

  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)).

  Further, 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 switch 56, the month display switch 57, and the display switch 58. A reset switch 60, a time / alarm setting changeover switch 61, and an alarm ON / OFF switch 62 are connected.

  The control units 31 and 71 are equipped with 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 controls the pump driving unit 74, the pressure reducing valve driving unit 75, and the exhaust valve driving unit 76 of the armband unit 10 based on the detection signals from the sensors 24, 25, and 72 of the armband unit 10. A drive signal is output. 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 84, 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]
5 and 6 are flowcharts showing the 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 units 31 and 71 executing a program stored in the ROM.

  In FIG. 5, 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, when the armband part 2 is pressurized by the pump part 21 and the internal pressure of the armband part 2 reaches an appropriate pressure value (S106), the pressurization by the pump part 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 S112 of FIG. 6, 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 vascular pulsation or the K sound appearance interval 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). 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. Visually, as illustrated in FIG. 8A, 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. In addition, as illustrated in FIG. 8B, the second display unit 52 displays the latest measurement results up to the latest 20 times in a graph each time measurement is performed.

  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).

  Moreover, the control part 31 of the armband unit 10 performs the battery check shown in FIG. 7 in the initial setting of S101.

  In FIG. 7, 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 embodiment, the armband unit 10 and the main body unit 50 are configured separately and independently, and both units are configured to be capable of wireless communication using infrared rays or radio waves, so that a user-friendly sphygmomanometer can be realized.

  In addition, since it is not necessary to connect the armband unit 10 and the main unit 50 by inserting a connector or the like, it is not necessary to connect and clean the connector part due to dirt or dust, which has been a problem in the past. Will increase.

1 is an external perspective view of a blood pressure monitor according to an embodiment of the present invention. 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 the front view (a), upper surface (b), and rear view (c) of the main body unit of this embodiment. It is a block diagram of the sphygmomanometer of the embodiment according to 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 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 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 Depressurization control unit 23 Forced exhaust unit 24 Microphone unit 25 Noise sensing unit 26 Armband unit power supply unit 27 AC adapter unit 28 Communication unit 31 Control unit 32 Pressure detection unit 33 Filter amplifier unit 34 Pump drive unit 35 Pressure reducing valve drive unit 36 Exhaust valve drive unit 37 Filter amplifier unit 50 Main unit 51 First display unit 52 Second display unit 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 78 Main unit power supply unit 80 Clock circuit 81 Memory unit 82 Buzzer unit 84 Communication unit

Claims (3)

A housing provided with 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,
The armband unit having the casing and the pressurizing means and the main body unit having the display means are configured separately and independently,
The armband unit and the main unit can be communicated wirelessly,
The armband unit is provided with a control means,
When the start of blood pressure measurement is instructed, the control means performs initial setting, checks the display means, confirms that no internal pressure is applied to the armband portion, and the pressure value in this state , After starting to display the pressure on the display means,
Further, after the start of blood pressure measurement, when the output voltage of the battery serving as the power supply unit of the armband portion falls below the first specified value, a battery replacement mark blinks to indicate a second lower than the first specified value. A sphygmomanometer, wherein when the pressure falls below a specified value, pressurization by the pressurizing means is stopped, the armband portion is rapidly exhausted, and a battery replacement mark is blinked. The sphygmomanometer according to claim 1 , wherein the armband unit and the main body unit can communicate with each other using infrared rays or radio waves. The sphygmomanometer according to claim 1 or 2 , wherein the blood vessel information is information related to at least one of Korotkoff sounds and arterial waves.

Images