WO2009033310A1 - Sphygmomanomètre médical sans mercure - Google Patents

Sphygmomanomètre médical sans mercure Download PDF

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Publication number
WO2009033310A1
WO2009033310A1 PCT/CN2007/002676 CN2007002676W WO2009033310A1 WO 2009033310 A1 WO2009033310 A1 WO 2009033310A1 CN 2007002676 W CN2007002676 W CN 2007002676W WO 2009033310 A1 WO2009033310 A1 WO 2009033310A1
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WO
WIPO (PCT)
Prior art keywords
blood pressure
data
display
pulse
control unit
Prior art date
Application number
PCT/CN2007/002676
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English (en)
Chinese (zh)
Inventor
Xuengang Xin
Original Assignee
Dongguan Zhengyuan Electronic Technology Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Zhengyuan Electronic Technology Co., Ltd. filed Critical Dongguan Zhengyuan Electronic Technology Co., Ltd.
Priority to PCT/CN2007/002676 priority Critical patent/WO2009033310A1/fr
Publication of WO2009033310A1 publication Critical patent/WO2009033310A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers

Definitions

  • the present invention relates to the display of measured values of a sphygmomanometer, particularly a medical mercury-free sphygmomanometer.
  • the mercury sphygmomanometer has the advantages of stability, durability and low price. However, because the proportion of mercury is too large, and the mercury column sphygmomanometer uses the Coriolis method, because each doctor's hearing response speed is different, sometimes because the blood pressure reading is not recorded immediately when measuring, the larger error . Therefore, each doctor's measurement also produces errors, which are difficult to accurately and accurately reflect the instantaneous changes in blood pressure during each stroke. Moreover, mercury is a highly polluting and poisonous medium-sized metal that poses a certain risk to humans and the environment and is banned in many countries or regions.
  • the other is the use of medical mercury-free sphygmomanometers, including semi-automatic medical mercury-free sphygmomanometers and fully automatic medical mercury-free sphygmomanometers, the difference between which is the way in which the gas is vented.
  • the common principle is to use the pressure sensor to detect the gas pressure oscillation wave and pressure in the airbag, and generate different oscillation waves according to the change of the pressure in the airbag, and indirectly obtain the systolic blood pressure and the diastolic pressure of the blood pressure through the central processor, and pass through the display device. The blood pressure value and its pulse value are displayed.
  • the existing medical mercury-free sphygmomanometer or the liquid crystal bar simulates the mercury column to read the blood pressure value, or directly converts the pressure value into a digital display through the liquid crystal block, because the simulated mercury column has a small jitter when the blood pressure is generated. The time is short, and it is difficult for the user to observe and capture this data;
  • the prior art medical mercury-free sphygmomanometers have insufficient sampling intervals and sampling accuracy for the analog/digital conversion of blood pressure values when measuring blood pressure values.
  • the object of the present invention is to provide a measurement accuracy and use in view of the disadvantages of the cost, the accuracy of the reading and the accuracy of the output data of the medical mercury-free sphygmomanometer provided by the prior art. It is easy to observe and capture blood pressure data; at the same time, it has a new medical mercury-free sphygmomanometer with convenient advantages.
  • a medical mercury-free sphygmomanometer comprising a cuff, a charging and discharging device, a pressure sensor, a pulse sound listening device, an input unit, a display unit and a single-chip microcomputer control unit, wherein the 1 ⁇ 2 display unit comprises a simulated mercury column screen and a blood pressure display.
  • the single-chip microcomputer control unit displays the collected blood pressure amplitude data on the simulated mercury column display screen and the blood pressure display screen after being processed, and the single-chip microcomputer control unit further includes a judgment module and a data amplification module, and determines The module generates a jump point and a recovery point pulse beat period for each pulse beat period according to the sampled blood pressure amplitude data and the judgment condition, and the data amplification module angle amplifies the blood pressure amplitude data collected in each pulse beat period to Increase the sensory display amplitude of the blood pressure amplitude data output to the simulated mercury column and blood pressure display during each pulse beat period.
  • the simulated mercury column display screen and the blood pressure display screen are liquid crystal display screens
  • the sensory display amplitude amplified by the data amplification module is the amplitude of blood pressure collected during each pulse beat period. 2 times or more of the data.
  • the judgment condition is: starting from the first blood pressure amplitude sampling data, and sequentially comparing the sampled data backwards, if one sampling data is larger than the previous sampling after consecutive N occurrences Data, it is considered that the time point corresponding to the first sampling data after the first occurrence is the starting point of the pulse hopping period, and the first one after the same is equal to the starting point value.
  • the corresponding time point is a recovery point of the pulse beat period; wherein N is an integer greater than or equal to 2.
  • the value of N is 3.
  • the sampling frequency of the blood pressure value obtained by the single-chip microcomputer control unit is 200 to 420 Hz, the sampling precision is less than or equal to 0.1 mmHg, and the number of bits of the analog/digital conversion is 11 bits. or above.
  • the single-chip microcomputer control unit further includes a pulse sound processing module for determining a moment when the pulse sound completely disappears, and instructing the charging and discharging device to quickly and automatically start from a moment when the pulse sound completely disappears. Deflate or manually deflate quickly.
  • the pulse sound listening device is one of a stethoscope or a loudspeaker.
  • the present invention also provides a display method based on the medical mercury-free sphygmomanometer described above, comprising the following steps : Step 1: Inflating the cuff through the charging and discharging device;
  • Step 2 'The pressure sensor detects the blood pressure pressure value obtained in the cuff and transmits it to the MCU control unit;
  • Step 3 The MCU control unit compares the received pressure value with a preset pressure value pre-stored in the control unit of the single chip microcomputer, and stops the inflation when the pressure value is at the preset pressure value;
  • Step 4 The MCU control unit issues an instruction , the charge and discharge device starts to deflate slowly;
  • Step 5 The pressure sensor collects the blood pressure amplitude data and transmits it to the single-chip microcomputer control unit, and the single-chip microcomputer control unit generates a jump point and a recovery point of each pulse beat period according to the collected blood pressure amplitude data and the judgment condition;
  • Step 6 Amplify the blood pressure amplitude data collected during each pulse beat period, and display the blood pressure amplitude output to the simulated mercury column and the blood pressure display.
  • the method further includes: Step 7: After the MCU control unit determines that the pulse sound completely disappears, instruct the charging and discharging device to automatically deflate or manually Quickly deflate.
  • the judging condition is: starting from the first blood pressure amplitude sampling data, and sequentially comparing the sampled data backwards, if one sampling data occurs after N consecutive times If it is larger than the previous sampling data, it is considered that one sampling data after the first occurrence is larger than the starting point of the pulse jumping period corresponding to the previous sampling data, and the first one corresponding to the starting point value is equal to a recovery point of the pulse beat period; wherein N is an integer greater than or equal to 2.
  • the sampling frequency of the blood pressure value obtained by the data acquisition module is 200 to 420 Hz, the sampling precision is less than or equal to 0.1 mmHg, and the number of bits of the analog/digital conversion is 11 or more.
  • the invention has the beneficial effects of providing a measurement accuracy by making up for the disadvantages of high cost, accurate reading and unreliable data accuracy of the medical mercury-free sphygmomanometer provided by the prior art.
  • a new medical mercury-free sphygmomanometer that is high in use and can improve the sampling interval and sampling accuracy of blood pressure, while at the same time being convenient to use.
  • Figure 1 is a block diagram showing the structure of a medical mercury-free sphygmomanometer of the present invention
  • Figure 2 is a plan view of a display device of a prior art medical mercury-free sphygmomanometer
  • Figure 3 is a plan view showing a display device of the medical mercury-free blood pressure monitor of the present invention.
  • Figure 4 is a time-change function diagram of blood pressure values
  • Figure 5 is a flow chart showing the main control routine of the medical mercury-free sphygmomanometer of the present invention.
  • Figure 6 is a flow chart showing the slow deflation control program and display procedure of the medical mercury-free sphygmomanometer of the present invention. detailed description
  • FIG. 1 is a structural block diagram of a medical mercury-free sphygmomanometer according to the present invention
  • FIG. 3 is a plan view of a display device of the medical mercury-free sphygmomanometer of the present invention.
  • the medical mercury-free sphygmomanometer shown in the figure includes a power source 7, a cuff 6, a charge and discharge device 4, a pressure sensor 8, a pulse sound listening device 5, an input unit 10, a display unit (including a simulated mercury column display 3 and blood pressure).
  • Display 2 and the medical mercury-free sphygmomanometer composed of the MCU control unit 1.
  • the display unit 2, 3 is an LED light display strip or a liquid crystal display strip, and the single-chip microcomputer control unit 1 processes the collected blood pressure amplitude data, and displays it on the simulated mercury column display screen 3 and the blood pressure display. On screen 2.
  • the charging and discharging device 4 is one of a manual charging and discharging device and an automatic charging and discharging device, and the single chip control unit 1 controls the charging and discharging device 4 through a solenoid valve at a suitable flushing gas speed. Perform a flushing operation.
  • the pulse sound listening device 5 is one of a stethoscope or a loudspeaker.
  • the MCU control unit 1 further includes a judging module and a data amplifying module.
  • the judging module judges the starting point and the recovery point of each pulse bounce period according to the sampled blood pressure amplitude data and the judgment condition;
  • the data amplifying module is used to amplify each Blood pressure amplitude data collected during a pulse beat period to increase output to the simulated mercury column and blood pressure display 'in the blood pressure amplitude data of each pulse beat period Sensory display amplitude.
  • the sampling frequency of the blood pressure value obtained by the single chip control unit is
  • the sampling accuracy is less than or equal to 0.1 mmHg column, and the number of bits of the analog/digital conversion is 11 bits or more.
  • Figure 4 is a graph showing the time variation of blood pressure values.
  • the pressure curve 10 shown in the figure is expressed as a jitter generated by simulating the change of the mercury column with time, wherein the pressure curve A gradually decreases as the air pressure in the cuff 6 decreases, and when the gas pressure drops to be equal to the systolic pressure
  • the scale indicated by the mercury column is the systolic pressure, and then a series of pulse pulsation periods are generated.
  • the internal pressure of the airbag gradually decreases to the same as the diastolic pressure of the heart, the pulsating sound suddenly becomes weak or disappears.
  • the scale indicated by the mercury column is diastolic pressure.
  • the judging module included in the single chip control unit 1 determines the start point and the recovery point of each pulse bounce period based on the sampled blood pressure amplitude data and the judgment condition. Taking the period of generating the systolic pressure as an example, starting from the first blood pressure amplitude sampling data input to the single-chip microcomputer control unit, if one sampling data is larger than the previous sampling data after consecutive N occurrences, it is considered that the first occurrence occurs after the first one.
  • the sampling data is larger than the starting point of the pulse beat period corresponding to the previous sampling data, and the first one corresponding to the starting point value is the recovery point of the pulse beat period; wherein N is greater than or equal to 2 An integer, for example, the value of N is 3.
  • the data amplifying module included in the single chip control unit is configured to amplify the blood pressure amplitude data collected during each pulse bounce period to increase the output to the simulated mercury column and blood pressure.
  • the sensory display amplitude of the blood pressure amplitude data during each pulse beat period.
  • the jitter amplitude of the blood pressure amplitude data displayed by the simulated mercury column display 2 is more than doubled during each pulse beat period.
  • FIG. 2 is a plan view of a display device of a prior art medical mercury-free sphygmomanometer
  • FIG. 3 is a plan view of a display device of the medical mercury-free sphygmomanometer of the present invention.
  • the blood pressure jitter range of the medical mercury-free sphygmomanometer of the present invention is at least doubled in comparison with the blood pressure jitter range 91 of the medical mercury-free sphygmomanometer provided by the prior art of Figure 1.
  • the charging and discharging device is instructed to quickly and automatically deflate or manually deflate.
  • Figure 5 is a flow chart showing the main control routine of the medical mercury-free sphygmomanometer of the present invention
  • Figure 6 is a flow chart showing the slow deflation control program and display program of the medical mercury-free sphygmomanometer of the present invention.
  • the system is powered on, the main control program starts to run (step S01); the initialization is entered (step S02), and in step S02, the single-chip microcomputer control unit 1' receives the preset pressure value input by the input device 10, for example, 180 mmHg column. And storing the pressure value in the memory of the single-chip microcomputer control unit 1; after the initialization is completed, the single-chip microcomputer control unit i controls the charging and discharging device 4 to start inflating (step S03), and the inflation speed is 2 mmHg/s and 3 mmHg.
  • the microcontroller control unit 1 compares the received pressure value with a preset pressure value pre-stored in the single-chip microcomputer control unit 1, and stops the inflation when the pressure value is at the preset pressure value; specifically, That is, whether the air pressure is greater than
  • step S04 if less than 180mmHg, then go to step S03, continue to inflate, if it is greater than 180mmHg, stop inflation (step 05); the microcontroller control unit 1 issues an instruction, the charging and deflation device starts slow deflation measurement (step S06) Then, step S07 is performed.
  • step S07 it is determined whether the air pressure is less than 40 mmHg, if the air pressure is not less than 40 mmHg, the process proceeds to step S06, and the measurement is continued; if the air pressure is less than 40 mmHg, the process proceeds to step S08 to quickly deflate; after the rapid deflation is completed, the next measurement command is awaited. (Step S09), that is, it is judged that it is necessary to perform the next measurement, if necessary, the process goes to step S03, and if it is not, the shutdown is completed (step S010).
  • Fig. 6 is a flow chart showing the slow deflation control program and display program of the medical mercury-free sphygmomanometer of the present invention (step S06).
  • the slow deflation control program is started from step S21; the pressure sensor 8 detects the blood pressure pressure value acquired in the cuff 6 and transmits it to the single chip microcomputer control unit 1 (step 22); The film control unit 1 samples the blood pressure pressure value to generate blood pressure amplitude data (data0, data data2, data3, data4, data5) (step S23); and then, according to the collected blood pressure amplitude data and the judgment condition, each pulse is generated.
  • step S24 amplifying blood pressure amplitude data collected during each pulse beat period (step S25), and displaying the blood pressure amplitude output to the simulated mercury column and blood pressure On the display screen (step S26).
  • the determining condition is: starting from the first blood pressure amplitude sampling data, backwards Comparing the sampled data, if one consecutive N occurrences, one sample data is larger than the previous sample data, where N is an integer greater than or equal to 2, preferably, N is equal to 3.
  • the blood pressure value dataO>datal is extracted but datal ⁇ data2 ⁇ data3
  • the time point corresponding to the previous sampling data after the first occurrence is the hopping point (datal) of the pulse hopping period
  • the first time point corresponding to the value of the jump point is the recovery point of the pulse beat period (for example, data9)
  • the first pulse beat period obtained is the systolic pressure pulse beat period, after m
  • the blood pressure amplitude data collected during each pulse beat period is amplified, and the blood pressure amplitude output is displayed to the simulation Mercury column and blood pressure display (step S26).
  • the medical mercury-free sphygmomanometer of the present invention can be captured when the sampling accuracy is 0.1 mmHg, and when it encounters a pulse rising period of about 0.5 mmHg, the value can be further amplified by more than one time.
  • the display exaggerates the beat of the pulse, making it easier for the user to observe the beat.
  • the medical mercury-free sphygmomanometer of the present invention compensates for the disadvantages of the high cost, the accuracy of the reading, and the difficulty in ensuring the accuracy of the medical mercury-free sphygmomanometer provided by the prior art, and provides a A new medical mercury-free sphygmomanometer with high measurement accuracy, improved sampling interval for blood pressure and sampling accuracy, and at the same time, is easy to use.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

Un sphygmomanomètre médical sans mercure comprend un manchon (6), un équipement d'alimentation en air et de dégonflage (4), un capteur de pression (8), un équipement (5) permettant d'entendre un son de pulsation, une unité d'entrée (10), une unité d'affichage et une unité de commande à une seule puce (1). L'unité d'affichage comprend un afficheur simulant une colonne de mercure (2) et un afficheur de pression sanguine (3). Les données d'amplitude de pression sanguine échantillonnées sont traitées et transférées et sont ensuite affichées sur l'afficheur simulant une colonne de mercure (2) et sur l'afficheur de pression sanguine (3) par l'unité de commande à une seule puce (1). L'unité de commande à une seule puce (1) comprend également : un module d'évaluation permettant de produire le point de saut de départ et le point de reprise de chaque période de pulsation en fonction des données d'amplitude de pression sanguine échantillonnées et des conditions d'évaluation ; un module d'amplification de données destiné à amplifier les données d'amplitude de pression sanguine échantillonnées lors de chaque période de pulsation, de façon à augmenter l'amplitude d'affichage sensorielle des données d'amplitude de pression sanguine de chaque période de pulsation qui sont délivrées à l'afficheur simulant une colonne de mercure (2) et à l'afficheur de pression sanguine (3).
PCT/CN2007/002676 2007-09-10 2007-09-10 Sphygmomanomètre médical sans mercure WO2009033310A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178519A (zh) * 2011-02-25 2011-09-14 浙江工商大学 一种柱显压力评估装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464017A (en) * 1994-06-29 1995-11-07 Juang; Jing-Song LED display blood pressure meter
US6699196B2 (en) * 2001-05-31 2004-03-02 George Hung Simulative electronic blood pressure meter
JP2004121632A (ja) * 2002-10-04 2004-04-22 A & D Co Ltd 電子血圧計
CN1923134A (zh) * 2005-08-30 2007-03-07 潘卫江 电子血压计
JP2007117373A (ja) * 2005-10-27 2007-05-17 A & D Co Ltd 電子血圧計

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5464017A (en) * 1994-06-29 1995-11-07 Juang; Jing-Song LED display blood pressure meter
US6699196B2 (en) * 2001-05-31 2004-03-02 George Hung Simulative electronic blood pressure meter
JP2004121632A (ja) * 2002-10-04 2004-04-22 A & D Co Ltd 電子血圧計
CN1923134A (zh) * 2005-08-30 2007-03-07 潘卫江 电子血压计
JP2007117373A (ja) * 2005-10-27 2007-05-17 A & D Co Ltd 電子血圧計

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178519A (zh) * 2011-02-25 2011-09-14 浙江工商大学 一种柱显压力评估装置

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