JP3147041U - Arm-mounted blood pressure monitor - Google Patents

Abstract

An arm insertion type sphygmomanometer capable of starting blood pressure measurement operation and measuring blood pressure with high accuracy when an upper arm is inserted in a correct posture in an armband.
A housing provided with an armband portion for inserting an upper arm, a pressurizing means for introducing and pressurizing air to the armband portion until blood pressure can be measured, and an armband by the pressurizing means. Detecting means 24 for detecting blood vessel information in a state in which the internal pressure of the unit is controlled, determining means 71 for determining a blood pressure value from the blood vessel information detected by the detecting means, and display means for displaying the blood pressure value determined by the determining means 43, an elbow rest provided on the housing for placing the upper arm ahead of the elbow when the blood pressure measurer inserts the upper arm into the armband, and the elbow of the blood pressure measurer is placed on the elbow rest during blood pressure measurement. An elbow detection unit 7e for detecting that the elbow is detected, a determination unit 71 for determining a detection result of the elbow detection unit, and a control unit 71. If it is determined to be in the position, the control unit starts the measurement operation. That.
[Selection] Figure 3

Description

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

  Conventionally, blood pressure monitors installed in hospitals, etc., insert the upper arm of the person being measured (for example, the non-dominant arm) into the opening surrounded by the armband, and operate the measurement start switch etc. with the other hand Operate the unit to measure blood pressure. However, if the other arm is inconvenient, operation becomes extremely difficult.

Here, in an arm-insertion type sphygmomanometer in which an armband part is built in a housing, there is a configuration in which a remote control unit can be attached to and detached from the sphygmomanometer main body part and can be remotely operated by wired communication or wireless communication (for example, patents) Reference 1).
JP 2005-334049 A

  In Patent Document 1, after confirming that one upper arm of the person to be measured has been inserted into the opening surrounded by the armband in the correct posture, the operation unit such as the measurement start switch is operated with the other hand. Need to measure blood pressure. Here, if the posture in which the upper arm is inserted is bad, there is an inconvenience that an error occurs after the measurement is started and the upper arm is reinserted or an accurate measurement result cannot be obtained.

  The present invention has been made in view of the above problems, and an object thereof is to realize an arm insertion type sphygmomanometer that can start blood pressure measurement and accurately measure blood pressure when the upper arm is correctly inserted into the armband portion.

  In order to solve the above-described problems and achieve the object, the arm insertion type sphygmomanometer according to the present invention includes a housing provided with an arm band part for inserting an upper arm, and the arm band part until the blood pressure can be measured. A pressure means for introducing and pressurizing air, a detection means for detecting blood vessel information in a state where the internal pressure of the armband is controlled by the pressure means, and a blood pressure value from the blood vessel information detected by the detection means Determining means for determining the blood pressure value determined by the determining means, and a blood pressure measurer provided on the housing, when the blood pressure measurer inserts the upper arm into the armband, An elbow rest for placing, an elbow detecting section for detecting that the elbow of the blood pressure measurer is placed on the elbow rest at the time of blood pressure measurement, a determination means for determining a detection result of the elbow detecting section, a control section, The blood pressure measurer's elbow is placed on the elbow rest by the determination means. If it is determined in position, characterized in that to start the measurement operation by the control unit.

  Preferably, the elbow detection unit is located at a position where it is difficult to contact a part other than the elbow of the arm.

  Preferably, the elbow detection unit is a load detection device.

  Preferably, the elbow detection unit is a touch sensor that detects skin contact.

  Preferably, the elbow detector is a temperature sensor that detects body temperature.

  Preferably, the elbow detection unit is constituted by an infrared sensor.

  According to the present invention, since the blood pressure measurement operation is executed when the upper arm is inserted into the armband portion in the correct posture, the blood pressure can be measured with high accuracy.

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]
1 is an arm insertion type sphygmomanometer according to an embodiment of the present invention, and is a front perspective view showing an armrest in an open state (a) and a closed state (b), and FIG. 2 is an embodiment according to the present invention. It is a back perspective view which is the arm insertion type blood pressure monitor of a form, Comprising: The state (a) which opened the armrest, and the state (b) which closed.

  As shown in FIGS. 1 and 2, the sphygmomanometer 1 exemplified as the present embodiment has a structure in which an arm band portion 2 as an arm band that compresses the upper arm during blood pressure measurement is built in a housing 3 of the arm band unit 10. This is an arm-inserted sphygmomanometer that does not require the armband portion 2 to be wrapped around the upper arm of the person being measured, and can measure blood pressure with either the left or right upper arm.

  The housing 3 is provided with a main body unit 40 capable of remotely operating a control unit 71 (to be described later) of the armband unit 10 detachably with respect to the adapter socket portion 5 of the housing 3. The main body unit 40 operates the armband unit 10. It has a display unit 43 for displaying an operation unit 42 and measurement results, and can be operated with one hand so that it can be stored in a pocket of a measurement subject.

  On the display unit 43 of the main unit 40, the maximum blood pressure value / minimum blood pressure value, pulse value (pulse rate), measurement date and time, trend graph, and the like are displayed on the LCD. The display unit 43 displays a message such as “deep breath” and “relax” for obtaining a correct measurement result after the start of measurement, and a character indicating that the pulse is being measured. In addition, as other display examples, a pressurization operation, a decompression (exhaust) operation, a blood pressure measurement operation, and the like may be displayed. In addition, a selection switch may be provided to trend-store / display blood pressure values (maximum blood pressure values / minimum blood pressure values) and measurement times of a plurality of measured persons (users). It can also be applied as a (user) personal use.

  The housing 3 is provided with an opening 4 for inserting the arm of the person to be measured, and a flexible cloth bag or rubber bag that forms an insertion hole for the upper arm on the inner peripheral surface of the opening 4. The armband part 2 which consists of is provided. The periphery of the opening 4 is formed in a smooth curved surface, and has a shape that allows the person to be measured to easily insert the upper arm. Further, the upper surface portion 3 a of the housing 3 is provided with an operation portion 6 such as an adapter socket portion 5 and an on / off switch for detachably storing the main unit 40.

  The operation units 6 and 42 include, for example, a power on / off switch, stop switch, quick exhaust switch, stored data recall / cancel switch, trend graph display switching switch, scroll switch, storage prohibit switch, etc. It is.

  An armrest 7 is provided on the rear end face 3 b side of the housing 3. The armrest 7 has a storage position (see FIGS. 1B and 2B) that closes the insertion hole with respect to the shaft support portion 3 d at the lower end on the rear end surface side of the housing 3, and the insertion hole is opened. It is supported so as to be rotatable between an open position where the upper arm can be inserted (see FIGS. 1A and 2A).

  The front end surface 3c of the housing 3 is inclined backward from the bottom surface by a first angle θ1 (for example, 75 °), and the rear end surface 3b is inclined backward from the bottom surface by a second angle θ2 (for example, 110 °). ing. Further, the armrest 7 is inclined upward at a third angle θ3 (for example, 15 °) from the installation surface in the open position (in use), and has a function of prompting measurement at a correct part. The armrest 7 may be configured to be rotatable and removable with respect to the housing 3.

  An opening 7a is formed at the free end of the armrest 7 opposite to the shaft support 7d so that the user can easily open and close the armrest 7 by hooking a finger or the like. The support surface (front surface) for receiving the arm in the armrest 7 is formed with a concave curved groove portion 7b from the shaft support portion 7d to the free end portion, and has a function of guiding the upper arm to the correct position. Yes. Further, the groove 7b is provided with an elbow detection unit that detects that the armrest 7 is placed in a predetermined state on the armrest 7 when the armrest 7 is in the open position. The elbow detection unit can be appropriately selected and used from a load detection unit, a touch sensor, a temperature sensor that detects the elbow body temperature, and a temperature sensor that detects the elbow body temperature. The case where a load detection part is used as an elbow detection part is demonstrated. The position of the load detection unit 7e as the elbow detection unit is an elbow position where the measurement subject inserts the upper arm into the armband portion 2 with respect to the armrest 7 (a position where it is difficult to contact other parts than the elbow) And a pressure sensor for detecting that a predetermined load is applied to the elbow position.

  Further, since the rear end surface 3b of the housing 3 has a shape that matches the support surface of the armrest 7, and the back surface 7c of the armrest has a smooth surface, the armrest 7 has a shape protruding in the storage position. And integrated with the outer shape of the housing 3 (see FIG. 1B). The armrest 7 is configured to prevent falling from the storage position to the open position when not in use and to hold the storage position by providing a moderation when opening and closing by forming a cam-like portion on the shaft support portion 7d. ing. Thereby, when not in use, it can be stored compactly, and space saving can be achieved.

  FIG. 3 is a block diagram of the arm insertion type sphygmomanometer according to the embodiment of the present invention.

  As shown in FIG. 2, the armband unit 10 includes a pump unit 21 for supplying 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 the blood flow sound of the measurement subject, and vibration noise that enters the microphone unit 24 from the outside The noise sensing part 25 which detects this 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 start switch 11, the stop switch 12, and the memory prohibition switch 13 described above. The armband unit power supply unit 26 includes a plurality of (four) AA batteries and constitutes a DC power supply of DC6V. The AC adapter unit 27 constitutes an AC power supply with a rating of 100V.

  The armband unit 10 is equipped with a control unit 71. 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, and the main unit 40. Is connected to a communication unit 14 that controls wired communication or wireless communication such as infrared rays or radio waves (for example, Bluetooth).

  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 main unit 40 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 unit 43 of the main unit 40 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 are output to the main unit 40.

  In addition, 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 main unit 40 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 display changeover switch 58 performs a pulse pressure display operation, outputs it to the main body unit 40 as a display signal.

  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.

  On the other hand, the control unit 31 is mounted on the main unit 40. The control unit 31 includes a main unit power supply unit 32, a clock circuit 33 having a clock function, a memory unit 34 including a non-volatile memory for storing blood pressure values and measurement time data, and a buzzer unit 35 for generating an alarm sound. A communication unit 36 that controls wired communication with the armband unit 10 or wireless communication such as infrared rays or radio waves (for example, Bluetooth) is connected.

  Further, the control unit 31 outputs the pulse rate and blood pressure value obtained from the armband unit 10 to the display unit 43.

  Further, the control unit 31 outputs the pulse pressure obtained from the armband unit 10 to the display unit 43 when a pulse pressure display operation is performed by the display changeover switch 49.

  The main unit power supply unit 32 includes a plurality of (two) lithium button batteries, and is mainly used as a backup power supply for the memory unit 34.

  The memory unit 34 stores the measured values of the users A and B set by the user changeover switch 47 in different areas. In addition, the memory unit 34 reads out the measured values of the users A and B set by the user changeover switch 47 and outputs them to the control unit 31. The memory unit 34 has a capacity capable of storing measurement values for about 730 times (raw data for about one year or monthly average data for 60 months by measurement twice a day (morning and evening)).

  Further, the control unit 31 includes the display unit 43, the average switch 44, the graph movement switch 45, the display ON switch 46, the user changeover switch 47, the month display switch 48, the display changeover switch 49, the reset switch 50, the time / alarm setting changeover. A switch 51 and an alarm ON / OFF switch 52 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 operation signals from the switches of the main unit 40 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, and outputs these values to the main unit 40. 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.

  Further, as will be described later, the control unit 71 performs the blood pressure measurement operation when it is detected that the upper arm is inserted into the armband unit 2 and the elbow is placed on the armrest 7 and a predetermined load is applied by the load detection unit 7e. Start.

  In the state where the main unit 40 is housed in the adapter socket portion 5 of the housing 3, since both the units 10 and 40 are electrically connected by the connector, the control unit 71 of the armband unit 10 is stored in the ROM. In accordance with the procedure of the blood pressure measurement program, the operation signals from the operation units 6 and 42 of the armband unit 10 and the main unit 40 are input via the communication units 36 and 14, and the sensors 7e, 24, 25, and 72 While inputting the detection signal and outputting the drive signal of the pump unit 21, the decompression control unit 22, and the forced exhaust unit 23, the measurement values such as blood pressure and pulse are determined from the detection signals of the microphone unit 24 and the pressure detection unit 72, These values are output to the main unit 40 via the communication units 14 and 36.

  In a state where the main unit 40 is removed from the adapter socket unit 5, the wired connection by the connectors of both units 10 and 40 is cut off, so the control unit 71 of the armband unit 10 follows the procedure of the blood pressure measurement program. Sensors 7e, 24, 25, 72 based on an operation signal from the operation unit 6 of the unit 10 itself or an operation signal input from the operation unit 42 of the main unit 40 via the communication units 36, 14 wirelessly. The detection signal is input to the pump unit 21, the decompression control unit 22, and the forced exhaust unit 23, and the measurement values such as blood pressure and pulse are determined from the detection signals from the microphone unit 24 and the pressure detection unit 72. These values are output to the main unit 40 via 14 and 36.

  The control unit 31 of the main body unit 40 outputs an operation signal from the operation unit 42 to the armband unit 10 and sequentially stores the measurement values received from the armband unit 10 in the memory unit 34, and displays the display unit based on the display signal. 43 is controlled.

[Description of operation]
FIG. 4 is a flowchart showing a blood pressure measurement operation by the arm insertion type 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. 4, when the start switch 11 is pressed, initial setting is executed (S1). Next, the display unit 43 is inspected (all segments are turned on for about 1 second) (S2).

  Next, the upper arm is inserted into the armband portion 2 and the elbow is placed on the armrest, and it is determined by the determining means whether a predetermined load is applied by the load detecting portion 7e as the elbow detecting portion (S3). When the predetermined load is detected, it is determined that the upper arm of the person to be measured has been inserted at an appropriate position with respect to the armband portion 2, and the process proceeds to S5. Further, when the predetermined load is not detected within the predetermined time, or when the load is detected but is less than the predetermined load, it can be determined that the upper arm of the person to be measured is not in an appropriate position with respect to the armband portion 2. Then, a warning to that effect is given through the buzzer unit 35 and the display unit 43.

  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 (S5). Thereafter, pressure display on the display unit 43 is started (S6).

  Next, the exhaust valve of the forced exhaust unit 23 is closed, and the pump unit 21 is operated to start pressurization (S7). 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 (S8), the pressurization by the pump part 21 is stopped (S9). Next, the decompression control by the decompression control unit 22 is started (S10), and the blood pressure measurement operation is started (S11). Further, if it is determined that the pressurization is insufficient during the pressure reduction control (S12), repressurization is performed (S13), and the pressure reduction control is started again (S10).

  In S14, 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 (S15). In S15, the pulse rate is calculated from the vascular pulsation obtained from the blood pressure value and / or the appearance interval of the K sound.

  When the minimum blood pressure is set, the exhaust valve of the forced exhaust section 23 is opened to stop the pressure reduction control (S16), and the blood pressure value and the pulse rate are displayed simultaneously (S17). To continue the measurement, the start switch 11 is pressed (S18), the stop switch 12 is pressed (S19), or the power is turned off when a predetermined time (second) γ elapses without the stop switch 12 being pressed. The flow is finished (S20 to S21).

  According to the above-described embodiment, when it is detected that the upper arm of the person to be measured is inserted into an appropriate position of the armband portion 2, the elbow is placed on the armrest 7, and a predetermined load is applied by the load detection portion 7e, the blood pressure Since the measurement operation is started, blood pressure can be measured with high accuracy.

  In addition, since it is possible to easily confirm that the upper arm has been inserted into the armband portion 2 in the correct posture, and a subsequent blood pressure measurement start operation is not necessary, operability is improved.

It is an arm insertion type sphygmomanometer of embodiment concerning this invention, Comprising: It is a front perspective view which shows the state (a) and the closed state (b) which opened the armrest. It is an arm insertion type sphygmomanometer of embodiment concerning this invention, Comprising: It is a back perspective view which shows the state (a) and the closed state (b) which opened the armrest. It is a block diagram of an arm insertion type blood pressure monitor of an embodiment concerning the present invention. It is a flowchart which shows the blood-pressure measurement operation | movement by the blood pressure meter of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Arm insertion type blood pressure monitor 2 Arm band part 3 Housing 4 Opening part 5 Adapter socket part 6,42 Operation part 7 Armrest 7e Elbow detection part 10 Arm band unit 11 Start switch (SW)
12 Stop (emergency exhaust) switch (SW)
13 Memory prohibition switch (SW)
14 Communication Unit 21 Pump Unit 22 Decompression Control Unit 23 Forced Exhaust Unit 24 Microphone Unit 25 Noise Sensing Unit 26 Arm Band Unit Power Supply Unit 27 AC Adapter Unit 31 Control Unit 32 Main Unit Unit Power Supply Unit 33 Clock Circuit 34 Memory Unit 35 Buzzer Unit 36 Communication 40 Main unit 43 Display 44 Average switch (SW)
45 Graph movement switch (SW)
46 Display ON switch (SW)
47 User changeover switch 48 Month display switch (SW)
49 Display changeover switch (SW)
50 Reset switch (SW)
51 Time / alarm setting switch (SW)
52 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

Claims (6)

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;
An elbow rest for placing the upper arm ahead of the elbow when the blood pressure measurer is inserted into the armband part, provided in the housing;
An elbow detector that detects that the elbow of the blood pressure measurer is placed on the elbow rest during blood pressure measurement;
Determination means for determining the detection result of the elbow detection unit, and a control unit,
The arm insertion type sphygmomanometer, wherein when the determination means determines that the elbow of the blood pressure measurer is in an appropriate position on the elbow rest, the control unit starts the measurement operation.   The sphygmomanometer according to claim 1, wherein the elbow detection unit is located at a position where it is difficult to contact a part other than the elbow of the arm.   The sphygmomanometer according to claim 1, wherein the elbow detection unit is a load detection device.   The sphygmomanometer according to claim 1, wherein the elbow detection unit is a touch sensor that detects contact with skin.   The sphygmomanometer according to claim 1, wherein the elbow detection unit is a temperature sensor that detects a body temperature.   The sphygmomanometer according to claim 1, wherein the elbow detection unit includes an infrared sensor.

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