WO2009127091A1

WO2009127091A1 - Sphygmomanometer

Info

Publication number: WO2009127091A1
Application number: PCT/CN2008/001555
Authority: WO
Inventors: 辛学刚
Original assignee: 广州市易诚医疗科技有限公司
Priority date: 2008-04-14
Filing date: 2008-09-01
Publication date: 2009-10-22
Also published as: CN101264013A

Abstract

A sphygmomanometer includes a cuff (1) having a bladder, an inflation and deflation device (2) coupled to the bladder of the cuff (1). The sphygmomanometer further includes: a pressure sensor (3) for measuring the pressure of the bladder; a digital displaying unit (4) coupled to the pressure sensor (3) for displaying the pressure; a stethoscope (5) for picking up the sphygmous sound; a microphone (6) provided in the acoustic tube of the stethoscope (5) for receiving the sphygmous sound picked up by the stethoscope (5); an audio processing circuit (7) coupled to the microphone (6), which receiving and processing the audio signal outputted by the microphone (5) linearly; a speaker (8) coupled to the audio processing circuit (7) for playing the audio signal processed by the audio processing circuit (7); and a power (15) for applying power to the sphygmomanometer.

Description

Sphygmomanometer

Technical field

The present invention relates to a sphygmomanometer and, more particularly, to a sphygmomanometer using the Korotkoff principle.

Background technique

Blood pressure is one of the important physiological parameters of the human body. Accurate measurement of blood pressure is helpful for early detection and identification of high blood pressure types, and reasonable treatment recommendations are proposed. Currently, methods for measuring blood pressure are classified into Korotkoff and oscillometric methods. Indeed

The Korotkoff method is to squeeze the blood vessels through the cuff and the air pressure, so that the blood flow is blocked, and then slowly deflate. At the same time, the pulse sound is heard with a stethoscope, and a strong and powerful pulse sound can be heard through the stethoscope, and slowly changes. Light, until you hear a smoother, normal pulse. The first time the pulse is heard, the corresponding high pressure is the systolic pressure; continue to deflate, and the last pulse corresponds to the diastolic pressure. It is recognized in the medical world that the Korotkoff sound sphygmomanometer (Korean sound sphygmomanometer) can accurately measure blood pressure values, but because the operation of the Korotkoff sphygmomanometer (such as the common mercury sphygmomanometer) is more complicated, it is more difficult for the measurer. High requirements, and the measurer needs to listen to the pulse sound through the stethoscope and simultaneously observe the values of vasoconstriction pressure and diastolic blood pressure. It is not easy to hear the pulse sound in a noisy environment, which makes the Kodak sphygmomanometer not suitable for use in noisy environments. . In addition, the sphygmomanometer currently using the Korotkoff sound method is generally a mercury sphygmomanometer. Mercury is a heavy metal with serious pollution and harmfulness, and has great danger to the human body and the environment.

The main process of the oscillometric method is to obtain the pressure signal in the cuff, analyze the pulse signal separated from it, select the moment with the largest fluctuation as the reference point, and based on the reference point, find the systolic blood pressure according to the clinically summarized probability statistics. The position corresponding to the diastolic pressure is such that systolic and diastolic pressures are obtained. Because the systolic and diastolic pressures of the oscillometric method are based on probability statistics, individual differences are not taken into account. Therefore, the oscillometric method measures the blood pressure of an individual with a large difference, and the measurement result is inaccurate.

Summary of the invention

In view of the inaccurate measurement results of the above oscillometric sphygmomanometer, the Kodak sphygmomanometer is not easy to listen to pulse sounds and the danger of danger to the human body and the environment due to the use of mercury, providing an accurate measurement and easy to hear the pulse. A sphygmomanometer that does not use mercury. The sphygmomanometer provided by the present invention comprises a cuff with an airbag, a charging and discharging device connected to the airbag of the cuff, and a pressure sensor connected to the airbag for detecting the pressure of the airbag; and the pressure sensor is connected a digital display unit for displaying a pressure value; an auscultation head for extracting a pulse sound; a microphone installed in a sound tube of the auscultation head, the microphone for receiving a pulse sound extracted by the auscultation head; an audio processing circuit, The audio processing circuit is coupled to the microphone to receive and linearly process the microphone An audio signal output by the wind; a speaker coupled to the audio processing circuit for playing an audio signal processed by the audio processing circuit; and a power source for powering the sphygmomanometer. This solution uses an audio amplifier circuit and speakers to facilitate the sound of the pulse, while using a digital display to replace the mercury column commonly used in existing Korotkoff sphygmomanometers, eliminating the need for mercury that is highly polluting and hazardous. The potential impact of existing mercury sphygmomanometers on the human body and the environment.

Preferably, the charging and discharging device includes an air pump; the sphygmomanometer further includes a main control unit, and the main control unit is connected to the charging and discharging device, the pressure sensor, and the digital display unit, and is configured to be controlled according to the pressure value of the pressure sensor. Inflating and deflation of the charge and discharge device, and outputting the pressure value to the digital display unit for display. The advantage of this scheme is that the main control unit is used to control the automatic charging and discharging, the display of measured values, and the use is convenient, and the time taken for measuring blood pressure is shortened.

Preferably, the sphygmomanometer further comprises: a recording triggering device connected to the main control unit, the recording triggering device is configured to send a control instruction to the main control unit; and a memory connected to the main control unit, the main control The unit stores the currently received pressure value in the memory according to the control command of the recording trigger device, and outputs the stored pressure value to the digital display unit for display. The advantage of this solution is that the measurer, such as a doctor, can conveniently record the measurement while listening to the pulse, which helps to combine the accuracy of the Korotkoff principle with the professionalism of the doctor. '

Preferably, the recording triggering device is a systolic pressure recording button and a diastolic pressure recording button provided in the sphygmomanometer housing. The advantage of this approach is that it is convenient to record systolic and diastolic blood pressure. Preferably, the master unit can be set such that the last recorded pressure value is taken as the final measured value.

Preferably, the recording triggering device comprises a remote controller and a wireless signal receiver, and the wireless signal receiver is disposed in the sphygmomanometer and connected to the main control unit. This solution uses wireless remote control to record measured values, which is convenient for users of sphygmomanometers.

Preferably, the sphygmomanometer further comprises a three-way sound guiding tube and an ear hook, one port of the three-way sound guiding tube is connected to the auscultation head, and the other two ports are connected to the ear hook.

Preferably, the sphygmomanometer further comprises a circuit switch in series with an audio processing circuit or a speaker.

Preferably, the digital display unit further comprises a liquid crystal display that simulates a mercury column display.

Preferably, the main control unit further includes a data amplifying module, wherein the data amplifying module is configured to amplify a magnitude of a pressure value output by the pressure sensor, and the digital display unit performs an analog mercury column display according to the magnitude of the amplified pressure change.

Preferably, the cuff includes an original tape body and an elongated section connected to an end of the original tape body, and the surface of the extended length segment is provided with a small adhesive cloth, and the small adhesive cloth and the small adhesive cloth on the surface of the original tape body match.

Compared with the existing sphygmomanometer, the sphygmomanometer provided by the invention adopts the Kosher principle recognized by the medical community, and measures The result is accurate and reliable. At the same time, the sphygmomanometer of the invention comprises an audio amplifying circuit and a speaker, which is convenient for the measurer to hear the Korotkoff sound, and a digital display screen is used instead of the commonly used mercury column of the Korotkoff sphygmomanometer. The use of mercury that is highly polluting and hazardous eliminates the potential impact of existing mercury sphygmomanometers on the human body and the environment.

DRAWINGS

Figure 1 is a schematic view of the structure of a sphygmomanometer according to a first embodiment of the present invention;

Figure 2 is a schematic view of the structure of a sphygmomanometer according to a second embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of a sphygmomanometer according to a second embodiment of the present invention.

detailed description

Example 1

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of the structure of a sphygmomanometer according to a first embodiment of the present invention. As shown in Fig. 1, the sphygmomanometer includes a cuff 1, a charge and discharge device 2, a pressure sensor 3, a digital display unit 4, an auscultation head 5, a microphone 6, an audio processing device 7, a speaker 8, and a power source 15. The cuff 1 has an air bag. The charge and discharge device 2 is in communication with the air bag for inflating the air bag or discharging the air of the air bag. The pressure sensor 3 is for measuring the pressure inside the balloon. Preferably, the balloon is connected to the sphygmomanometer body through a catheter, and the pressure sensor 3 is mounted in the sphygmomanometer body, and the pressure of the balloon is measured by the catheter of the balloon. The digital display unit 4 is connected to the pressure sensor 3 for displaying the measured value of the pressure sensor 3. Since the conventional mercury column is replaced by a digital display, the sphygmomanometer of the present embodiment does not need to use mercury, and the product is environmentally friendly. In addition, since the digital display is used, space is saved, and therefore, the sphygmomanometer of this embodiment can be made into a portable product.

The auscultation head 5 is used to extract a pulse sound. For example, the auscultation head 5 can be placed at the radial artery of the arm to allow the auscultation head 5 to receive a pulsation signal of the human blood vessel. The microphone 6 is installed in the sound tube of the auscultation head 5, and is used to listen to the pulse sound extracted by the head 5 and output a corresponding electrical signal. The audio processing circuit 7 is connected to the microphone 6, and receives and linearly processes the audio signal output from the microphone 6. In this embodiment, the audio processing circuit 7 includes a preamplifier, a band pass filter, and an amplifier connected in series. The input of the speaker 8 is connected to the output of the amplifier for playing the audio signal processed by the audio processing circuit 7. The power source 15 supplies power to the sphygmomanometer, for example, to digital display units, microphones, audio processing circuits, and the like. The power source 15 can be a battery, a rechargeable battery, or the like, or a power adapter that can be connected to a commercial power source.

Example 2

Fig. 2 is a schematic diagram of the structure of a sphygmomanometer according to a second embodiment of the present invention. As shown in Figure 2, the blood of this embodiment The pressure gauge is different from the sphygmomanometer shown in FIG. 1 in that the sphygmomanometer of the embodiment further includes a main control unit 9, which may be a processor (CPU) chip or a single-chip microcomputer, and the charging and discharging device 2 It is a fully automatic charge and discharge device with air pump. The main control unit 9 is connected to the charging and discharging device 2, the pressure sensor 3, and the digital display unit 4, receives the pressure value output by the pressure sensor 3, and controls the inflation and deflation of the charging and discharging device according to the pressure value, and receives the received air. The pressure value is output to the digital display unit 4 for display in real time. In addition, the main control unit 9 can also be connected to the audio processing circuit 7 or the speaker 8, and controls the audio processing circuit 7, the speaker 8, such as volume adjustment and the like.

Example 3

Fig. 3 is a schematic diagram of the structure of a sphygmomanometer according to a second embodiment of the present invention. The sphygmomanometer shown in Fig. 3 differs from the sphygmomanometer shown in Fig. 2 in that the sphygmomanometer shown in Fig. 3 further includes a memory 10 and a recording triggering device 11. The memory 10 is connected to the main control unit 9, which can access the values to the memory 10 as well as the data in the memory 10. The memory 10 may be a permanent memory, a volatile memory or the like commonly used in the industry, or may be a cache of the main control unit 9. g|3, the main control unit 9 and the memory 10 can be integrated, for example, in the form of a microprocessor with a cache.

The recording triggering device 11 is connected to the main control unit 9 for transmitting a control command to the main control unit 9, for example, instructing the main control unit 9 to store the currently received pressure value in the memory 10, and outputting the stored pressure value to The digital display unit 4 performs display. As a solution, the recording triggering device 11 is a contraction pressure recording button and a diastolic pressure recording button provided in the sphygmomanometer housing. In use, when the measurer hears the Korotkoff sound corresponding to the systolic pressure, pressing the systolic pressure recording button will trigger the main control unit 9 to store the currently received pressure value to the memory 10, and instruct the digital display unit 4 to display The pressure value, which is the systolic pressure required by the measurer. The recording of diastolic blood pressure is similar and will not be described again. In addition, during a plurality of measurements, the main control unit 9 and the memory 10 can be set to cause the main control unit 9 to store a plurality of measurement results in the memory 10. It is also possible to set the main control unit 9 and the memory 10 so that the main control unit 9 takes the last recorded systolic pressure and diastolic pressure as the final systolic pressure and diastolic pressure.

As an alternative, the recording triggering device 11 includes a remote controller and a wireless signal receiver, and the wireless signal receiver is disposed in the sphygmomanometer and connected to the main control unit 9. This method uses a remote control and is more convenient to use. Those skilled in the art will appreciate that other functional buttons may also be provided on the housing of the sphygmomanometer or on the remote control, including but not limited to power switches, volume adjustments, historical measurement queries, and the like.

As an improved solution, a traditional stethoscope can also be added. Preferably, the stethoscope shares the auscultation head 5, I of the sphygmomanometer, one port of the three-way sound tube of the stethoscope is connected to the auscultation head 5, and the other two ports are connected to the ear hook. Accordingly, it is also possible to add a circuit switch in series with the audio processing circuit 7 or the speaker 8. Thus, the audio processing circuit 7 or the speaker 8 can be easily turned on and off.

As another improvement, the digital display unit 4 further includes a liquid crystal display that simulates a mercury column display. This kind of scheme shows the user a more intuitive feeling by simulating the mercury column, which is convenient for the user to observe. Preferably, the main control unit 9 further The data amplifying module is configured to amplify the magnitude of the pressure value outputted by the pressure sensor 3, so that the digital display unit 4 performs the simulated mercury column display according to the magnitude of the amplified pressure change.

As an improvement, the lengthening section 13 can also be added to the original belt of the cuff 1. The extension section 3 is connected at the end of the original belt body, and the surface is provided with a small adhesive cloth, and the small adhesive cloth is matched with the small adhesive cloth on the surface of the original belt. This improvement allows the cuff 1 to be used in a wider range, so that the sphygmomanometer of the present invention can be used to measure the blood pressure of a person whose arm size is different.

The embodiments of the present invention described above are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

Rights request

A sphygmomanometer comprising a cuff (1) with an air bag, and a charging and deflation device (2) connected to the air bag of the cuff, wherein the sphygmomanometer further comprises:

a pressure sensor (3) connected to the airbag for detecting the pressure of the airbag;

a digital display unit (4) connected to the pressure sensor (3) for displaying a pressure value;

Auscultation head for extracting pulse sounds (5);

a microphone (6) installed in the sound tube of the auscultation head (5), the microphone (6) for receiving the pulse sound extracted by the auscultation head (5);

An audio processing circuit (7), the audio processing circuit (7) is coupled to the microphone (6), and receives and linearly processes the audio signal output by the microphone (6);

a speaker (8) connected to the audio processing circuit (7) for playing an audio signal processed by the audio processing circuit (7);

A power source that supplies the sphygmomanometer.

2. The sphygmomanometer according to claim 1, wherein: said charge and discharge device (2) comprises an air pump; said sphygmomanometer further comprising a main control unit (9), said main control unit (9) a charging and discharging device (2), a pressure sensor (3), and a digital display unit (4) are connected, for controlling the inflation and deflation of the charging and discharging device according to the pressure value of the pressure sensor (3), and the pressure value Output to the digital display unit (4) for display.

3. The sphygmomanometer according to claim 2, wherein the sphygmomanometer further comprises:

a recording trigger device (11) connected to the main control unit (9), the recording trigger device (11) for transmitting a control command to the main control unit (9);

a memory (10) connected to the main control unit (9), the main control unit (9) storing the currently received pressure value in the memory (10) according to a control instruction of the recording trigger device (11), and The stored pressure value is output to the digital display unit (4) for display.

The sphygmomanometer according to claim 3, wherein the recording triggering means (11) is a systolic pressure recording button and a diastolic pressure recording button provided in the sphygmomanometer housing.

The sphygmomanometer according to claim 3, wherein the recording triggering device (11) comprises a remote controller and a wireless signal receiver, and the wireless signal receiver is disposed in the sphygmomanometer and is associated with the master controller Unit (9) is connected.

The sphygmomanometer according to claim 3, wherein the sphygmomanometer further comprises a three-way sound guiding tube and an ear hook, and one port of the three-way sound guiding tube is connected to the auscultation head (5), and the other two Ports are connected to the ear hooks.

7. The sphygmomanometer according to claim 6, wherein the sphygmomanometer further comprises a circuit switch in series with the audio processing circuit (7) or the speaker (8). .

The sphygmomanometer according to any one of claims 2 to 7, characterized in that the digital display unit (4) further comprises a liquid crystal panel simulating a mercury column display.

The sphygmomanometer according to claim 8, wherein the main control unit (9) further comprises a data amplifying module, wherein the data amplifying module is configured to amplify a pressure value change output by the pressure sensor (3) The amplitude, the digital display unit (4) performs a simulated mercury column display according to the magnitude of the amplified pressure change.

The sphygmomanometer according to any one of claims 1 to 7, wherein the cuff (1) comprises a raw tape body and an elongated section connected to an end of the original tape body, and the elongated section surface is provided There is a small adhesive cloth, and the small adhesive cloth matches the small adhesive cloth on the surface of the original tape.