CN2703497Y

CN2703497Y - Blood-pressure measuring device

Info

Publication number: CN2703497Y
Application number: CN 200420016237
Authority: CN
Inventors: 梁波雅; 李高勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-19
Filing date: 2004-05-19
Publication date: 2005-06-08
Anticipated expiration: 2014-05-19

Abstract

The utility model relates to a blood-pressure measuring device. The above device can implement the pressure change inside of the bandage, by reducing or increasing the volume of a communicating vessel which is communicated with the bandage and can change volume for making the bandage and the volume of closing air inside of the communicating vessel change. The communicating vessel of which the volume can be changed adopts a cylinder or a telescopic air sac and controls the cylinder or the telescopic air sac via a driver. As the change of pressure, pressure detecting part can take measurements for the blood-pressure of human bodies. The measuring device has the advantages of simple structure, accurate control, high measuring precision, and quick speed etc, and the utility model can implement the blood-pressure measuring of double direction or ladder type during the pressure increment and pressure reduction of the bandage.

Description

Blood pressure measuring device

Affiliated technical field

This utility model relates to a kind of succusion Woundless blood pressure measuring device, particularly a kind of by reducing or the volume of the linker of the variable volume that increase is communicated with bandage, confining gas volume in bandage and the linker is changed, realize the blood pressure measuring device of the pressure adjustment that the bandage internal pressure changes.

Background technology

In the prior art, the blood pressure measurement that uses on the clinical medicine is divided into wound is arranged (directly) and two kinds of methods of noinvasive (indirectly), and due to illness non-invasive blood pressure measures that the people does not have wound pain bitter and traumatic infection risk, extensive use clinically.Non-invasive blood pressure is measured in the prior art, manual measurement is arranged again and measure two kinds of methods automatically.Manual measurement adopts auscultation, is Ke Shi sound method again, and owing to the influence of the difference of operator's technical merit, subjective factors and be subject to interference such as extraneous vibration, poor accuracy, error are big.Automatically measurement mainly is to adopt succusion, is oscillographic method again, shake ripple method, vibratory drilling method, and succusion has overcome the error that manual operation brings effectively, and is repeated, concordance is relatively good, has improved accuracy.

Existing succusion non-invasive blood pressure is measured, and all is to adopt inflator pump and vent valve structure, and bandage is inflated and exitted, making the gas in the bandage mainly is that quality changes, simultaneously also there is volume to change, realizes that the bandage internal pressure changes, carry out automatically that the pressure of bandage adjusts.Charge and discharge the characteristics of gas according to the pressure adjustment process of bandage, the measurement of existing succusion non-invasive blood pressure mainly contains four kinds of patterns: (1) fast aeration, and venting slowly continuously, deflation course is implemented blood pressure measurement; (2) fast aeration, the staged venting, deflation course is implemented blood pressure measurement; (3) continuous trickle charge gas, venting fast, gas replenishment process is implemented blood pressure measurement; (4) staged inflation, venting fast, gas replenishment process is implemented blood pressure measurement.The major defect of this several modes is: its inherent gas characteristic that charges and discharge of inflator pump, vent valve is difficult to control, is difficult to realize bandage pressure adjustment at the uniform velocity, is difficult to realize the quick measurement of blood pressure, is difficult to be applicable to different testees; Be difficult to overcome that circuit that inflator pump, vent valve bring disturbs and gas circuit is disturbed influence to certainty of measurement, as when realizing two-way blood pressure measurement, need inflator pump, vent valve parts and the comparatively complicated structure of excellent performance, increased cost greatly.The above-mentioned disadvantages affect of prior art the accuracy and the measuring speed of blood pressure measurement in the prior art, residual atmosphere gas in the bandage before also existing bandage fixing in the prior art, lean on the manually-operated discharging, be difficult to guarantee the unification of gas discharging in the bandage, when making each measurement, the colligation tightness is consistent, and the each measurement of influence is accurate, unified.

Summary of the invention

For overcoming in the existing Woundless blood pressure measuring device, the pressure adjustment of bandage, bandage is carried out pneumatic compression and when bandage being exitted decompression by inflator pump by vent valve or vent valve group, inflator pump, the interference effect certainty of measurement that vent valve brings, bandage pressurization and decompression control difficulty, can't low-costly realize when bandage pressurizes and the two-way blood pressure measurement in when decompression, discharging of normal pressure residual gas and measuring speed wait technical problem slowly in the bandage, this utility model provides a kind of Woundless blood pressure measuring device, the gas path component of the pressure adjustment of the bandage of this blood pressure measuring device does not have inflator pump, the interference effect that vent valve brings, improved certainty of measurement, reduce mushing error, pressurization, decompression rate is fast and steadily even, control easily, can low-costly realize when bandage pressurizes and the two-way blood pressure measurement in when decompression, after the use, the residual gas capacity can be sought unity of standard in the bandage, has thoroughly solved the deficiency that prior art exists.

The technical scheme that its technical problem that solves this utility model adopts is: a kind of blood pressure measuring device, comprise bandage, bandage pressure adjustment member, bandage pressure detecting part, central processing unit and power pack are formed, bandage pressure adjustment member, by two electromagnetic valves, the linker of variable volume, the linker driver, Drive and Control Circuit and solenoid valve control circuit are formed, electromagnetic valve one end is communicated with atmosphere, one end is communicated with another electromagnetic valve, the other end of electromagnetic valve is communicated with the linker of variable volume, be connected with the driver that the linker gas volume is changed on the linker of variable volume, driver is connected with Drive and Control Circuit.Solenoid valve control circuit is connected with electromagnetic valve with electromagnetic valve.Be communicated with bandage by gas circuit between electromagnetic valve and the electromagnetic valve.Drive and Control Circuit, solenoid valve control circuit is connected with central processing unit.Bandage pressure detecting part, form by pressure transducer, gain amplifying circuit, low pass filter, band filter, A/D translation circuit and gain adjustment circuit, the air inlet of pressure transducer is communicated with bandage, pressure transducer is connected with gain amplifying circuit, gain amplifying circuit is connected with the A/D translation circuit through band filter, gain adjustment circuit, gain amplifying circuit is connected with the A/D translation circuit through low pass filter simultaneously, and gain adjustment circuit is connected with central processing unit.The A/D translation circuit is connected with central processing unit.The linker of variable volume is cylinder or scalable air bag, and driver is cylinder control gas circuit or control motor.Drive and Control Circuit and solenoid valve control circuit are the circuit that power drive integrated circuit or power drive discrete device constitute.On the central processing unit, also be connected with memorizer, display, operated key and communication interface.Central processing unit inside has the A/D translation circuit.

The beneficial effects of the utility model are to have solved thoroughly that circuit that bandage brought by inflator pump pressurization, air bleeding valve venting disturbs and the problem of gas circuit interference effect certainty of measurement; Bandage pressurization simultaneously and decompression rate are fast, and it is mild, accurate that pressure changes, and shortened the blood pressure measurement time; Can low-costly realize when bandage pressurizes and the two-way blood pressure measurement in when decompression; Can any process continuous at bandage or staged pressurization or decompression carry out blood pressure measurement, improve the accuracy of blood pressure measurement; This blood pressure measuring device of while, simple in structure, cost is low, has improved the accuracy of blood pressure measurement greatly.

Description of drawings

Fig. 1 is a utility model present principles block diagram

Fig. 2 is the linker 3 and driver embodiment 1 sketch map of this utility model variable volume

Fig. 3 is the linker 3 and driver embodiment 2 sketch maps of this utility model variable volume

1 electromagnetic valve in the drawings, 2 electromagnetic valves, 3 linkers, 4 drivers, 5 Drive and Control Circuit, 6 solenoid valve control circuits, 7 bandages, 8 pressure transducers, 9 gain amplifying circuits, 10 low pass filters, 11 band filters, 12A/D translation circuit, 13 gain adjustment circuits, 14 memorizeies, 15 display, 16 communication interfaces, 17 operated keys, 18 power supplys, 19 central processing units, 20 cylinders, 21 air bags, 22 control motors.

The specific embodiment

Referring to accompanying drawing 1, this utility model is closed electromagnetic valve 1 before using, and gas volume in the linker 3 of variable volume is in a set condition, and the pressure of content gas is a setting value under this set condition; Open electromagnetic valve 1, bandage 7 and linker 3 are communicated with atmosphere, and gas volume is in maximum rating in the linker 3 of variable volume, and at this moment the volume of bandage 7 is in minimum state, the pressure of content gas is the normal pressure atmospheric pressure, bandage 7 is fixed on request the appointed part of human body.Close electromagnetic valve 1, driver 4 drives linker 3, linker 3 gas volumies are dwindled, gas in the linker 3 enters bandage 7 by electromagnetic valve 2, bandage 7 internal pressures and volume begin to increase, when gas volume was in minimum state in the linker 3, bandage 7 volumes and pressure were in maximum rating, had realized bandage pressurization intake process.When linker 3 counteragents, when linker 3 gas volumies increased, the gas in the bandage 7 entered linker 3 by electromagnetic valve 2, and at this moment the volume of bandage 7 and pressure begin to reduce, and when linker 3 gas volumies were in maximum rating, bandage 7 returned to original state.The effect of electromagnetic valve 1 is the air inlet of control system and the safeguard protection of system's pressurization, and electromagnetic valve 2 is control 3 pairs of bandage 7 air inlets of linker and capacity.

Referring to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, the control procedure of the blood pressure measuring device that the present invention relates to is to adopt solenoid valve control circuit 6, the unlatching of control electromagnetic valve 1 and electromagnetic valve 2 or close, driver 4 on the while Drive and Control Circuit 5 control linkers 3, implement linker 3 and realize the variation of gas volume, linker 3 can adopt cylinder 20 or scalable air bag 21, and driver 4 can adopt the motion of control gas circuit or control motor 22 direct control cylinders 20 or scalable air bag 21.

On the gas circuit of bandage 7, also be connected with the bandage 7 pressure detecting parts of forming by pressure transducer 8, gain amplifying circuit 9, low pass filter 10, band filter 11, A/D translation circuit 12 and gain adjustment circuit 13; Pressure transducer 8 acts on the different pressures of human body according to bandage 7, detect and be mixed with that artery blood flow produces, the electric pressure signal of the pulse wave that transmits through tissue, after gain amplifying circuit 9 amplifies, one the tunnel through low pass filter 10, output static pressure signal, through A/D translation circuit 12 input central processing units 19, another road is through band filter 11, the output pulse wave signal of telecommunication, through gain adjustment circuit 13, A/D translation circuit 12 input central processing units 19, central processing unit 19 passes through the blood pressure that Processing Algorithm detects human body according to the static pressure signal and the pulse wave signal of telecommunication of 12 inputs of A/D translation circuit; Central processing unit 19 sends the signal of telecommunication according to different detection needs, by solenoid valve control circuit 5 and Drive and Control Circuit 6, and control electromagnetic valve 1, electromagnetic valve 2 and driver 4.Power supply 18 is connected with the each several part circuit, and working power is provided.For ease of operation, demonstration and storage, on central processing unit 19, can be connected with memorizer 14, display 15, operated key 17 and communication interface 16 simultaneously.Central processing unit 19 can adopt inside to have the central processing unit of A/D translation circuit.

The blood pressure measuring device that this utility model relates to, linker 3 is realized the variation of gas volume, can be successive or stepped, to satisfy the needs of continous way blood pressure measurement or staged blood pressure measurement.

Claims

1, a kind of blood pressure measuring device comprises bandage, bandage pressure adjustment member, bandage pressure detecting part, central processing unit and power pack composition, it is characterized in that:

The described bandage pressure of a adjustment member, linker (3), linker driver (4), Drive and Control Circuit (5) and solenoid valve control circuit (6) by electromagnetic valve (1), electromagnetic valve (2), variable volume are formed, electromagnetic valve (1) one end is communicated with atmosphere, the other end is communicated with electromagnetic valve (2), the other end of electromagnetic valve (2) is communicated with the linker (3) of variable volume, be connected with the driver (4) that linker (3) gas volume is changed on the linker of variable volume (3), driver (4) is connected with Drive and Control Circuit (5).Solenoid valve control circuit (6) is connected with electromagnetic valve (2) with electromagnetic valve (1), is communicated with bandage (7) by gas circuit between electromagnetic valve (1) and the electromagnetic valve (2), and Drive and Control Circuit (5), solenoid valve control circuit (6) is connected with central processing unit (19).

The described bandage pressure detecting of b part, by pressure transducer (8), gain amplifying circuit (9), low pass filter (10), band filter (11), A/D translation circuit (12) and gain adjustment circuit (13) are formed, the air inlet of pressure transducer (8) is communicated with bandage (7), pressure transducer (8) is connected with gain amplifying circuit (9), gain amplifying circuit (9) is through band filter (11), gain adjustment circuit (13) is connected with A/D translation circuit (12), gain amplifying circuit (9) is connected with A/D translation circuit (12) through low pass filter (10) simultaneously, and gain adjustment circuit (13) is connected with central processing unit (19).A/D translation circuit (12) is connected with central processing unit (19).

2, a kind of blood pressure measuring device according to claim 1 is characterized in that: the linker of described variable volume (3) is cylinder or scalable air bag, and driver (4) is cylinder control gas circuit or control motor.

3, a kind of blood pressure measuring device according to claim 1 and 2 is characterized in that: described Drive and Control Circuit (5) and solenoid valve control circuit (6) are the circuit of power drive integrated circuit or power drive discrete device formation.

4, a kind of blood pressure measuring device according to claim 1 and 2 is characterized in that: on the described central processing unit (19), also be connected with memorizer (14), display (15), operated key (17) and communication interface (16).

5, a kind of blood pressure measuring device according to claim 1 and 2 is characterized in that: described central processing unit (19) inside has A/D translation circuit (12).