JP2003070755A - Sphygmomanometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sphygmomanometer by which a user can correctly know blood pressure before, during, and after measurement. SOLUTION: This sphygmomanometer has a cuff 1 for mounting on an upper limb, a pressurizer 10 to stepwise supply air to the cuff 1 via a tube 2 corresponding to pressurizing signals supplied by a control part 17, a pressure sensor 12 to detect cuff pressure in the cuff 1, a band pass filter 13 to extract pulse signals from outputted signals form the pressure sensor 12, a control part 17 to measure blood pressure based on the pulse signals, an imaging part 50 to image a condition of the subject before, during, and after the measurement controlled by the control part 17, and a printer 7 to print out the result of the blood pressure measurement and the imaging result by the imaging part 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blood pressure measuring device used for blood pressure measurement.

[0002]

2. Description of the Related Art A blood pressure measuring device, which has been conventionally provided only in each medical institution, has recently become popular in general households by computerization. This type of blood pressure measurement device is mainly equipped with a cuff that is attached to a blood pressure measurement site such as an upper arm or a finger, a pressurizer that supplies air to the cuff, and a control that controls the pressure of the cuff (hereinafter referred to as the cuff pressure). Section, an apparatus main body for obtaining a systolic blood pressure, a diastolic blood pressure, a pulse rate and the like based on the cuff pressure, and a printer section for printing out the measurement result of the systolic blood pressure and the like.

In the above structure, when the switch is pressed, the control section controls the cuff pressure of the cuff step by step. As a result, air is gradually supplied from the pressurizer to the cuff, and the cuff pressure of the cuff is gradually increased. Then, the apparatus main body obtains the measurement result of the systolic blood pressure and the like based on the cuff pressure, and the printer unit outputs the paper on which the measurement result is printed.

[0004]

By the way, what kind of situation is the subject (during exercise (during exercise, after exercise), at rest)?
Information on whether blood pressure was measured in is one of the very important factors. This is because the blood pressure value changes between exercise and rest. However, in the conventional blood pressure measurement device, since only the numerical values such as the systolic blood pressure are printed out as the measurement result, there is a drawback that it is not possible to know the condition of the subject before, during, or after blood pressure measurement. It was Although the above situation can be known from the memory of the person to be measured, it will be forgotten half a year after the blood pressure measurement. The present invention has been made under such a background, and an object of the present invention is to provide a blood pressure measurement device capable of accurately knowing the condition of a subject before, during, or after blood pressure measurement.

[0005]

According to a first aspect of the present invention, there is provided a blood pressure measurement device for measuring blood pressure by detecting a pulse wave at a blood pressure measurement site, which is to be measured before, during or after blood pressure measurement. It is characterized by comprising an image pickup means for picking up an image of the situation of the person and an output means for outputting the blood pressure measurement result and the image pickup result of the image pickup means. The invention according to claim 2 is the blood pressure measurement device according to claim 1, wherein a cuff attached to a blood pressure measurement site, a pressurizing means for pressurizing the cuff pressure in the cuff at predetermined intervals, Based on the cuff pressure, pulse wave detection means for detecting a pulse wave, and a blood pressure detection means for detecting blood pressure from the detection result of the pulse wave detection means, the output means, the detection result of the blood pressure detection means And outputting the image pickup result of the image pickup means.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an external configuration of a blood pressure measurement device according to an embodiment of the present invention. In this figure, 1 is a cuff for wearing the upper arm, and a tube 2
It is connected to the apparatus main body 3 via. In this case, the tube 2 is composed of a single tube for both pressurization and exhaust.

Reference numeral 4 denotes a digital display section for displaying the maximum blood pressure, the minimum blood pressure, the average blood pressure and the pulse rate. Reference numeral 5 is a dot matrix display in which a plurality of light emitting diodes are arranged vertically and horizontally. The pulse wave is displayed on the dot matrix display 5 at the time of blood pressure measurement as shown in the figure,
When not measuring, the function of the device is displayed. The function display of the device includes an alarm content at the time of an alarm, an elapsed time of the displayed measured value, an error content at the time of error, and the like. Reference numeral 6 denotes various switches such as a power switch, a measurement start switch, a mode selection rotary switch, a measurement time setting device and a measurement interval setting device.

Reference numeral 7 denotes a printer, which displays an image (face image, etc.) of the subject on the recording paper 52 during blood pressure measurement (or before, during, or after measurement), systolic blood pressure, diastolic blood pressure. , Average blood pressure, pulse rate, etc. are printed. Figure 3
FIG. 4 is a diagram showing an example of a result printed on the recording paper 52. On the recording paper 52, in addition to measurement result data 52a such as systolic blood pressure, diastolic blood pressure, and pulse rate, an image 52b showing the condition of the measurement subject is shown. Is printed.

Reference numeral 50 shown in FIG. 1 is an image pickup section for picking up the measurement situation (face image) of the subject at the time of blood pressure measurement (or before measurement, during measurement, after measurement). Reference numeral 51 denotes the imaging unit 5
This is a strobe unit that operates in synchronization with 0 and emits strong light to the person to be measured.

FIG. 2 is a block diagram showing the electrical configuration of the blood pressure measuring device according to one embodiment of the present invention. In this figure, parts corresponding to those in FIG. In FIG. 2, 10 is a pressurizer, which supplies air to the cuff 1 according to the supplied pressurizing signal. In this case, the pressurization of the cuff 1 is performed stepwise. An exhaust valve 11 exhausts the air in the cuff 1 based on the supplied exhaust signal. Further, the exhaust valve 11 exhausts the air in the cuff 1 at each stage of pressurization based on the exhaust signal. Reference numeral 12 is a pressure sensor, which detects the pressure in the cuff 1 and outputs the result.

Reference numeral 13 denotes a bandpass filter, which extracts the low-frequency component of the signal output from the pressure sensor 12 and extracts it as a pulse wave signal. In this case, the waveform obtained by the vibration of the blood vessel wall is called a pulse wave, and this pulse wave is obtained as a pulse wave signal by the bandpass filter 13.

An AC amplifier 14 amplifies the pulse wave signal extracted by the bandpass filter 13 to a predetermined level. The amplified pulse wave signal is applied to the gain switch 15
Is input to and the output level is adjusted. The level-adjusted pulse wave signal is input to the analog / digital (A / D) converter 16 and converted into a digital signal. In this case, the A / D converter 16 has two input ports, one of which is supplied with the pulse wave signal output from the gain switch 15, and the other of which is supplied with the pressure signal output from the pressure sensor 12. It The output signal of the A / D converter 16 is supplied to the control unit 17.

The control section 17 controls each section of the apparatus, and comprises a CPU (central processing unit), a ROM (read only memory), a RAM (random access memory), a timer circuit, etc., which are not shown. There is. C in ROM
A program for controlling the PU is written, and the control unit 17 pressurizes the cuff 1 according to this program and detects the pressure and the pulse wave. In addition, the control unit 1
7 outputs the image pickup start signal S1 and the image pickup signal S2 via the input / output unit 19. Here, the control unit 17 outputs the imaging start signal S1 during blood pressure measurement (or before, during, or after measurement). Details of the operation of the control unit 17 will be described later.

Further, the control unit 17 calculates the systolic blood pressure, the diastolic blood pressure, the average blood pressure, the pulse rate and the like based on the detection results, and displays them on the digital display unit 4 and the dot matrix display 5. The timing of pressurization is synchronized with the pulse wave, and the pressurization period is set to enter between the heartbeats before and after one heartbeat.

Reference numeral 18 is an alarm device. The input / output (I / O) unit 19 exchanges data between the control unit 17 and each unit of the apparatus. Reference numeral 20 is a dot matrix driver for driving the dot matrix display 5. When the image pickup start signal S1 is input, the image pickup unit 50 picks up an image of the situation of the person to be measured, and outputs the image pickup result as the image pickup signal S2 to the control unit 17 via the input / output unit 19. When the image pickup start signal S1 is input, the strobe unit 51 operates in synchronization with the image pickup unit 50, and irradiates the subject with strong light.

In the above structure, the person to be measured maintains the posture such that his or her face or the like enters the image pickup range of the image pickup section 50 after the cuff 1 is attached to the upper arm. In this state, when a measurement start switch (not shown) is pressed, the control unit 17 supplies the pressurizing signal to the pressurizing device 10 step by step. This allows
Air is supplied from the pressurizer 10 to the cuff 1 via the tube 2, and the cuff pressure of the cuff 1 is stepwise increased. Further, during this measurement, the control unit 17 outputs the image pickup start signal S1 to the image pickup unit 50 and the strobe unit 51 via the input / output unit 19. As a result, the image pickup unit 50 and the strobe unit 51 operate, and the image pickup unit 50 picks up an image of the condition of the person being measured. Is output to.

When the pressure is increased to the cuff 1, a signal corresponding to the cuff pressure of the cuff 1 is output from the pressure sensor 12, and the low frequency component of the signal is extracted by the band pass filter 13 to obtain the pulse wave signal. After being amplified by the AC amplifier 14 as a signal, the A / D converter 16 is passed through the gain switcher 15.
Entered in. The pulse wave signal is converted into a digital signal by the A / D converter 16, and then the control unit 17
Entered in.

As a result, the control unit 17 detects the minimum blood pressure, the average blood pressure, the maximum blood pressure, etc. from the pulse wave signal, and displays the detection results on the digital display unit 4 as the measurement results. Further, the control unit 17 sends the image pickup signal S2 together with the above measurement result data to the printer 7 via the input / output unit 19.
Output to. As a result, the recording paper 52 on which the measurement result data 52a and the image 52b shown in FIG. 3 are respectively printed is output from the printer 7.

As described above, according to the blood pressure measuring apparatus according to the above-described embodiment, the image captured by the image capturing section 50 is printed on the recording paper 52 together with the measurement result. It is possible to accurately know the situation of the person being measured during or after the measurement.

The blood pressure measuring device according to one embodiment of the present invention has been described above in detail. However, the specific configuration example is not limited to this one embodiment, and the design is within the scope of the present invention. The present invention includes modifications and the like. For example, the blood pressure measurement device according to the above-described embodiment may have the configuration shown in FIG. That is, in FIG. 4, 100 is a main body, and 101 is a main body 1.
00 is a digital display unit provided on the front panel,
It has the same configuration as the digital display unit 4 shown in FIG.
An image pickup unit 102 is provided above the digital display unit 101 and has the same configuration as the image pickup unit 50 shown in FIG. Reference numeral 103 denotes a flash unit provided on the left side of the image capturing unit 102, and has the same configuration as the flash unit 51 shown in FIG. Reference numeral 104 denotes a cuff support member arranged on the right side of the main body 100 and supports the cuff 1. In the blood pressure measurement device having the configuration shown in FIG. 4, the operation is the same as that of the blood pressure measurement device described above, and therefore the description thereof is omitted.

[0021]

As described above, according to the present invention,
Since the image captured by the image capturing unit is output together with the measurement result, it is possible to obtain an effect that the condition of the subject before, during, or after the blood pressure measurement can be accurately known.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of a blood pressure measurement device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of a blood pressure measurement device according to the same embodiment.

FIG. 3 is a diagram showing a printing example of the recording paper 52 shown in FIG.

FIG. 4 is a diagram showing another configuration example of the blood pressure measurement device according to the embodiment of the present invention.

[Explanation of symbols]

17 Control unit 50 Imaging unit 52 Recording paper 102 Imaging unit 103 Strobe part

Claims (2)

[Claims] 1. A blood pressure measurement device for measuring blood pressure by detecting a pulse wave of a blood pressure measurement site, comprising: imaging means for imaging the condition of the subject before, during, or after the blood pressure measurement; and a blood pressure measurement result. A blood pressure measurement device comprising: an output unit configured to output an image pickup result of the image pickup unit. 2. A cuff attached to a blood pressure measurement site, a pressurizing unit that pressurizes the cuff pressure in the cuff at predetermined intervals, and a pulse wave detecting unit that detects a pulse wave based on the cuff pressure. And a blood pressure detection unit that detects blood pressure from the detection result of the pulse wave detection unit, wherein the output unit outputs the detection result of the blood pressure detection unit and the imaging result of the imaging unit. The blood pressure measurement device according to claim 1.