CN101310788B - Anesthesia apparatus and calibration method of suction valve thereof - Google Patents
Anesthesia apparatus and calibration method of suction valve thereof Download PDFInfo
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- CN101310788B CN101310788B CN 200710074579 CN200710074579A CN101310788B CN 101310788 B CN101310788 B CN 101310788B CN 200710074579 CN200710074579 CN 200710074579 CN 200710074579 A CN200710074579 A CN 200710074579A CN 101310788 B CN101310788 B CN 101310788B
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Abstract
The invention discloses an anaesthetic machine, a gas path system comprises an inhalation gas path with an inhalation valve; a flow sensor is arranged in the gas path system and electrically connected with a parameter processing unit for detecting the real-time flow rate of the inhalation gas path; and the parameter processing unit transmits an electrical signal of the flow sensor to a main controller after the processing. The invention further discloses a calibration method of the inhalation valve of the anaesthetic machine, comprising the steps that the main controller controls the opening degree of a valve of the inhalation valve, and the real-time gas flow rate of the corresponding inhalation valve is obtained by the flow sensor, thus obtaining a valve opening table and a valve closing table. The usage of the anaesthetic machine of the technical proposal of the invention only adds one flow sensor, thus having low cost, convenience and practicality. The usage of the calibration method of the inhalation valve of the anaesthetic machine of the technical proposal of the invention can automatically complete the calibration of the inhalation valve after connecting the gas path by a user, thus being convenient and rapid and ensuring the mechanical ventilation of the anaesthetic machine to be more secure and reliable.
Description
Technical field
The present invention relates to a kind of anesthetic machine of medical instruments field, be specifically related to a kind of anesthetic machine that can calibrate inlet valve with and the method for inlet valve calibration.
Background technology
Pneumatic electrical control type anesthetic machine is present the most widely used anesthetic machine, its control principle is to introduce a stable high-pressure air source as power source, and the actual gas that flows into the apparatus control gas circuit is to be regulated by an electric control valve, master controller is by controlling inhaling air rate of flow of fluid size to the operation of this valve, this valve is commonly referred to as inlet valve or air delivery valve, and its control accuracy has directly determined the performance of anesthetic machine.
Anesthetic machine is that drive current (voltage) by control valve is controlled to the control of automatically controlled admission air valve, drives the size of the signal of telecommunication directly corresponding to different valve output flow velocitys.Machine must obtain the corresponding curve linear relationship between each valve driving signal of telecommunication and the output flow velocity in advance for accurate coutroi velocity.Producer generally all can demarcate the control characteristic of valve with the metrical instrument of standard when production of machinery, draws this curve linear relationship.And machine in use for some time, because extraneous and the factor affecting of valve own, the control curve of valve and when dispatching from the factory curve relatively large deviation may appear, for guaranteeing the normal use of ventilation control quality and anesthetic machine, need the user to calibrate the anesthetic machine inlet valve.
Inlet valve is the crucial control assembly of anesthetic machine, and its performance has directly determined the ventilation control quality of anesthetic machine.Admission air valve is in frequently folding duty when anesthetic machine is worked, when especially high frequency ventilation or high-speed servo valve need the flow velocity of in real time control variation, operation to valve more reaches per second tens of even up to a hundred times, the loss of valve itself is added the aging and temperature of integrated circuit board control circuit device and is floated impact, and relatively large deviation may appear in the control accuracy of valve.Directly affect the effect of ventilation control when the valve error is larger, cause easily hypoventilation or hyperventilation, when flow transducer of anesthesia apparatus lost efficacy or do not install, most probably patient is damaged especially.For the accuracy and the safety that guarantee to ventilate and control, anesthetic machine need to carry out periodic calibration to inlet valve usually.
Present anesthetic machine on the market has three kinds of calibration steps:
The one, provided or the user provides Standard Gases flowmeter measuring appratus for oneself by producer, automatically finish the from small to large calibration of different range valve controlling flow speed with manual adjustments or machine, obtain new inlet valve control characteristic curve.Although this mode is accurate, must be by the metrical instrument of standard, hospital might not possess the flow rate detection instrument that meets alignment requirements, and producer provides and is too loaded down with trivial details, and practicality is not strong.
The second is the anesthetic machine inlet valve to be supplied gas directly flow to atmosphere by patient end, increase a specific vapour lock at patient end, airway pressure is risen, producer is by specific vapour lock and the machine gas circuit situation of design, can know the relation between airway pressure and the air-flow velocity size, the user can be according to this relation by observing gas circuit pressure calibration flow velocity.But it is larger that this mode is affected by the gas circuit situation, be difficult to get rid of the impact of machine gas-path leakage and compliance and change in resistance, and airway pressure monitoring error is larger, can't guarantee precision.This calibrating mode also is difficult to realize for the calibration of low flow velocity in addition.
Also there is producer directly to utilize the flow transducer of patient breathing circuit that inlet valve is calibrated, but the flow transducer of patient breathing circuit is because routine use is more, damaged easily, and regular maintenance, deviation has appearred in the flow transducer that sterilization or periodic replacement sensor etc. factor all may cause the patient circuit to use, and so calibration can not guarantee degree of precision.
Summary of the invention
The present invention is exactly for the problems referred to above, proposes a kind of anesthetic machine, and the method for a kind of anesthetic machine inlet valve calibration, so that anesthetic machine can be finished the calibration of inlet valve automatically.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of anesthetic machine comprises air-channel system, parameter processing unit, valve control unit, master controller and flow transducer; Described air-channel system comprises air-breathing gas circuit, and described air-breathing gas circuit comprises inlet valve; Described parameter processing unit, valve control unit are electrically connected with described master controller; Described valve control unit is electrically connected with described inlet valve; Described flow transducer is arranged in the described air-breathing gas circuit, is electrically connected with described parameter processing unit; Described flow transducer is for detection of the real-time flow rate of air-breathing gas circuit, and described parameter processing unit is transferred to described master controller after the signal of telecommunication of flow transducer is processed; The valve opening of described main controller controls inlet valve, simultaneously according to real-time flow rate, the valve harmony in the exterior of opening that obtains inlet valve closes the valve table.
In the preferred technical scheme, described flow transducer is the differential flow transducer of constant aperture.
In the preferred technical scheme, described flow transducer is installed on air inlet place or the place, gas outlet of described inlet valve.
Further in the preferred technical scheme, described valve control unit comprises valve driving circuit and digital-to-analogue driver element, and the control signal of being sent by master controller is through after digital-to-analogue driver element and the valve driving circuit, the valve folding in the control air-channel system.
In the further preferred technical scheme, described parameter processing unit comprises amplifying circuit and AD conversion unit, the signal of telecommunication of described inlet valve flow detector amplifies through amplifying circuit, then carries out being transferred to master controller after the analog digital conversion through AD conversion unit.
A kind of anesthetic machine inlet valve calibration steps comprises the steps: the valve opening of main controller controls inlet valve, simultaneously by the gas flow rate of inlet valve corresponding to flow transducer Real-time Obtaining, obtains to open the valve harmony in the exterior and closes the valve table; Described flow transducer is arranged in the air-breathing gas circuit.
In the preferred technical scheme, comprise and obtain the maximum process of opening valve digital-to-analogue value: master controller initially leaves valve digital-to-analogue value by the valve driver element with certain and opens inlet valve, and obtain the corresponding flow velocity of initially opening valve digital-to-analogue value by parameter processing unit from flow transducer, judge whether again to surpass set point, if do not surpass set point, then strengthen the degree of opening inlet valve, surpass the scope of setting until judge flow velocity, obtain maximum and open valve digital-to-analogue value.
In the further preferred technical scheme, comprise and obtain the minimum process of opening valve digital-to-analogue value: master controller initially leaves valve digital-to-analogue value by the valve driver element with certain and opens inlet valve, and obtain the corresponding flow velocity of initially opening valve digital-to-analogue value by parameter processing unit from flow transducer, judge whether again less than set point, if not less than set point, then reduce to open the degree of inlet valve, until judge flow velocity less than the scope of setting, obtain minimum and open valve digital-to-analogue value.
Further in the preferred technical scheme, obtaining inlet valve opens the detailed process of valve table and comprise: master controller leaves valve digital-to-analogue value by the valve driver element with minimum and opens inlet valve, and by the flow velocity of parameter processing unit from flow transducer acquisition correspondence, judge whether again to reach maximum and open valve digital-to-analogue value, if do not reach, then strengthen to open the degree of inlet valve, reach maximum and open valve digital-to-analogue value until judge, valve opening-flow speed value that record is corresponding obtains inlet valve and opens the valve table.
Again in the further preferred technical scheme, the detailed process of obtaining inlet valve pass valve table comprises: master controller leaves valve digital-to-analogue value by the valve driver element with maximum and opens inlet valve, and by the flow velocity of parameter processing unit from flow transducer acquisition correspondence, judge whether again to reach minimum and open valve digital-to-analogue value, if do not reach, the degree of then less unlatching inlet valve reaches minimum and opens valve digital-to-analogue value until judge, valve opening-flow speed value that record is corresponding obtains inlet valve and closes the valve table.
Adopt the anesthetic machine of technical solution of the present invention, only increased a flow transducer on the basis of original anesthetic machine, not needing increases too much equipment, and cost is low, and is convenient and practical.Because this sensor places the driving gas circuit of machine intimate, driving gas is the air of dried and clean, thereby the not fragile distortion of sensor and affected by aqueous vapor, also can get rid of anaesthesia machine loop resistance, compliance and and leakage factor; Such design had both guaranteed the effect of calibration, and user's operation is also very convenient, has simplified greatly the maintenance work of machine.Adopt the anesthetic machine inlet valve calibration steps of technical solution of the present invention, can after connecting gas circuit, the user automatically finish the calibration to admission air valve, do not need to add standard metering instrument or particular device, pilot process also need not human intervention, convenient and swift, make the anesthetic machine mechanical ventilation more safe and reliable.
Description of drawings
Fig. 1 is the schematic diagram of gas circuit of specific embodiment of the invention anesthetic machine inlet valve calibrating installation;
Fig. 2 is system's composition diagram of specific embodiment of the invention anesthetic machine inlet valve calibrating installation;
Fig. 3 is that the inlet valve of specific embodiment of the invention anesthetic machine inlet valve calibrating installation is demarcated control flow chart;
Fig. 4 is that the inlet valve of specific embodiment of the invention anesthetic machine inlet valve calibrating installation leaves valve and closes the valve curve chart.
The specific embodiment
The specific embodiment of the invention is mainly by breathing at original anesthetic machine on the driving gas control piper of gas circuit inside, settle a reliable and stable inlet valve flow detector as the flow-speed measurement benchmark, realize the automatic calibration to inlet valve, improve the degree of accuracy of inlet valve.The inlet valve flow detector is inlet valve flow transducer 3 in the present embodiment, specifically the differential flow transducer of constant aperture.
Fig. 1 is the air-channel system schematic diagram of the anesthetic machine inlet valve calibrating installation of the specific embodiment of the invention.Drive air-flow and enter inlet valve 2 through behind the air relief valve 1.Inlet valve 2 effluent gases are known from experience inflow bellows 4 shells during normal operation, and the folded airbag in the compression bellows 4 is finished machinery and supplied gas.Present embodiment is exactly that pipeline between inlet valve 2 and bellows 4 is provided with a flow transducer, and namely the inlet valve flow transducer 3; When needing calibration inlet valve 2, for producing stable constant flow rate, need to take down the folded airbag in the bellows 4, so that inlet valve 2 output gas flows through sensor 3 are rear directly discharged to atmosphere, the folding of control inlet valve 2 is so that be used for calibration by the constant gas that varies in size that continues in the inlet valve 2.The specific embodiment of the invention is placed on respirator inside with inlet valve flow transducer 3, and after the inlet valve 2, as shown in the figure, inlet valve flow transducer 3 is on the gas circuit between inlet valve 2 and the bellows 4.The driving gas of this section gas circuit is the gas of clean dry owing to flow through, and compares and places the patient circuit, and inlet valve flow transducer 3 can be avoided the impact of aqueous vapor and mucus, can guarantee the accuracy of measuring.The pressure difference sensor of the constant aperture that present embodiment adopts, this sensor place machine intimate can guarantee can not be damaged, need not to change, and can guarantee the stability of measuring.
Among Fig. 15 is outlet valve, is arranged in the expiration branch road; 6 is the patient end flow transducer in the patient end gas circuit.The differential flow transducer of constant aperture is compared with the inlet valve 2 of patient end flow transducer 6 and frequent operation, and the flow monitoring signal is reliable and stable; And flow transducer 3 is near inlet valve 2, and the air-flow that can guarantee to flow through inlet valve 2 and flow transducer 3 is consistent, substantially can not have influence on calibration accuracy because of Leakage Gas, the resistance of ducting or compliance etc.
As shown in Figure 2, the inlet valve calibrating installation of the embodiment of the invention comprises several parts such as air-channel system, parameter processing unit, valve control unit, master controller, memorizer and host computer.Solid line among Fig. 2 between the each several part represents that gas circuit connects, and the dotted line indication circuit connects.In the present embodiment, microprocessor is master controller; Parameter processing unit comprises amplifying circuit and AD conversion unit; Valve control unit comprises valve driving circuit and digital-to-analogue driver element.
Wherein, the signal of telecommunication of flow transducer 3 outputs outputs to processor through analog digital conversion again after amplifying circuit amplifies, and is big or small by the flow velocity that processor calculates at that time, and is stored in the memorizer.The flow speed value that flow transducer 3 is measured during the different big or small Mathematical model control value of memory stores is exported flow velocitys really as inlet valve 2, thereby obtains the control signal of inlet valve 2 and the new corresponding curve linear relationship between the output flow velocity.Later mechanical ventilation control is just take new curve as the control foundation, thus the control accuracy of assurance inlet valve 2.Microprocessor is also regulated the size of the inlet valve 2 control signals of telecommunication by valve control unit in addition, realizes the control to inlet valve 2 output flow velocitys.Valve control unit comprises digital-to-analogue driver element and valve driving circuit in the present embodiment.Host computer is user interface among Fig. 2, and microprocessor carries out communication by serial ports and host computer, and user is by telling to the operation of host computer which kind of action microprocessor carries out, and microprocessor sends to host computer with the needed information of user.
In the time of anesthetic machine work, can compare to judge inlet valve whether calibrate by needs according to inlet valve flow transducer actual measured value and inlet valve setting value.If inlet valve is inaccurate, anesthetic machine can give the alarm, prompting user calibration inlet valve.The user only need to remove the folded airbag in the bellows 4, guarantees to provide the driving gas of steady pressure, and machine begins calibration automatically after confirming by the button on the host computer; The user also can pass through host computer active calibration inlet valve in addition.
Machine begins inlet valve is calibrated, mainly exactly inlet valve is demarcated again, namely obtain new opening the valve curve and close the valve curve, this preprocessor is newly opened the valve curve and is closed the valve curve as the control basis of inlet valve with what obtain, just can accurately control the flow of inlet valve, namely reach the purpose of calibration inlet valve.
Demarcate control flow chart referring to Fig. 3 based on the inlet valve of the automatic calibration device of inlet valve of this device, control flow is as follows in detail:
At first microprocessor can leave inlet valve 2 with certain initial value, and from the corresponding flow velocity of ventilation end flow transducer 3 acquisitions, judge again whether flow velocity surpasses set point, if do not surpass set point, then strengthen the degree of opening inlet valve 2, obtain corresponding flow velocity from ventilation end flow transducer 3 again, surpass set point until judge flow velocity, just obtained maximum and opened valve digital-to-analogue value.
Then microprocessor leaves inlet valve 2 with certain initial value again, and from the corresponding flow velocity of ventilation end flow transducer 3 acquisitions, judge that more whether flow velocity is less than set point, if not less than set point, then reduce to open the degree of inlet valve 2, obtain corresponding flow velocity from ventilation end flow transducer 3 again, until judge flow velocity less than set point, just obtained minimum and opened valve digital-to-analogue value.
Microprocessor leaves valve digital-to-analogue value with minimum again and opens inlet valve 2, and from the corresponding flow velocity of ventilation end flow transducer 3 acquisitions, judge whether again to reach maximum and open the valve digital-to-analogue, if do not reach, then strengthen the degree of opening inlet valve 2 with certain step pitch, obtain corresponding flow velocity from ventilation end flow transducer 3 again, and with each step open valve digital-to-analogue value and flow speed value is stored in the memorizer, reach maximum and open valve digital-to-analogue value until judge, just obtained inlet valve and opened the valve table.
Last microprocessor is opened valve digital-to-analogue value with maximum again and is opened inlet valve 2, and from the corresponding flow velocity of ventilation end flow transducer 3 acquisitions, judge whether again to reach minimum and open the valve digital-to-analogue, if do not reach, then reduce to open the degree of inlet valve 2 with certain step pitch, obtain corresponding flow velocity from ventilation end flow transducer 3 again, and with each step open valve digital-to-analogue value and flow speed value is stored in the memorizer, reach minimum and open valve digital-to-analogue value until judge, just obtain inlet valve and closed the valve table, then inlet valve is left valve harmony in the exterior pass valve table and deposit in the memorizer, so far inlet valve is demarcated the control flow end.
Above flow process briefly is exactly to obtain first that maximum is opened valve digital-to-analogue value and minimum is opened valve digital-to-analogue value, then further obtains to open the valve harmony in the exterior and closes the valve table.It should be noted that, open from small to large inlet valve, obtain the control digital-to-analogue value that inlet valve produces the correspondence of minimum and maximum controllable flow rate, valve control signal is when being increased to maximum from 0, initially have a segment limit can not have flow velocity to produce, and control signal increases to after certain scope, flow velocity also can not increase again, only have a middle part to be only effective span of control, machine can be made the controlled range size that valve need to be calibrated accordingly.Determined by valve characteristic in addition, the curve that the curve that its controlled quentity controlled variable of the control curve of valve increases and controlled quentity controlled variable reduce does not overlap, as shown in Figure 4, when to be valve from little aperture be increased to certain control signal and be reduced to this control signal from large aperture, the flow velocity size of output is inconsistent, therefore need to calibrate the ascending curve of the control signal of valve and descending curve respectively, we are called out the valve curve and close the valve curve, as shown in Figure 4, V represents driving voltage among the figure, namely opens valve digital-to-analogue value, and F represents the flow velocity of inlet valve, curve A is out the valve curve among the figure, and curve B is closes the valve curve.
When the valve curve is opened in calibration, microprocessor is according to certain rule, arrive in the maximum span of control in the controlled minimum of valve, Sequential output control signal from small to large also keeps a period of time, flow velocity Deng the steadily rear reading flow quantity sensor 3 of air-flow, this flow velocity is exactly out output flow velocity corresponding to this control digital-to-analogue value in the valve curve, so repeat, according to the control accuracy requirement, machine can obtain from small to large valve output flow velocity corresponding to several different control digital-to-analogue values automatically, sizes of lower all these the control digital-to-analogue values of memorizer record and corresponding flow velocity, what can simulate an admission air valve opens the valve curve, shown in A among Fig. 4.In the control afterwards, if need valve to increase output gas flow to certain value, only need to open the valve curve A according to this and find the corresponding valve control digital-to-analogue value of opening, processor is controlled signal of telecommunication according to this digital-to-analogue value output and is got final product to admission air valve.Same, microprocessor by descending order progressively successively decrease the control inlet valve and after each vary stable the measurement flow rate of reading flow quantity sensor 3, just obtain the pass valve curve of admission air valve, shown in B among Fig. 4.In the control afterwards, if need valve to reduce output gas flow to certain value, only need to find corresponding pass valve control digital-to-analogue value according to this pass valve curve B, microprocessor gets final product to inlet valve 2 according to this digital-to-analogue output control signal of telecommunication.
In the specific embodiment of the invention, because inlet valve flow transducer 3 directly links to each other with the gas circuit at inlet valve 2 places, the flow transducer that its measurement flow rate is compared other positions is disturbed very little, can directly represent the actual output of inlet valve 2, so in the actual ventilation control, this inlet valve flow transducer 3 can also with doing that inlet valve 2 is done the fine setting feedback, not calibrated and can accurately control in the less situation of inlet valve 2 deviations even guarantee.
What the inlet valve flow transducer 3 in the specific embodiment of the invention adopted is the differential flow transducer of constant aperture, but also it can be changed to the flow rate measuring device that other can maintain a long-term stability and measure, and its installation site is not limited to be right after after the inlet valve 2, also can place before the inlet valve 2, as long as guarantee that the gas flow that flows through wherein is consistent with inlet valve 2.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. an anesthetic machine comprises air-channel system, parameter processing unit, valve control unit, master controller; Described air-channel system comprises air-breathing gas circuit, and described air-breathing gas circuit comprises inlet valve; Described parameter processing unit, valve control unit are electrically connected with described master controller; Described valve control unit is electrically connected with described inlet valve; It is characterized in that: also comprise flow transducer, described flow transducer is arranged in the described air-breathing gas circuit, is electrically connected with described parameter processing unit; Described flow transducer is for detection of the real-time flow rate of air-breathing gas circuit, and described parameter processing unit is transferred to described master controller after the signal of telecommunication of flow transducer is processed; The valve opening of described main controller controls inlet valve, simultaneously according to real-time flow rate, the valve harmony in the exterior of opening that obtains inlet valve closes the valve table.
2. anesthetic machine according to claim 1, it is characterized in that: described flow transducer is the differential flow transducer of constant aperture.
3. anesthetic machine according to claim 1 is characterized in that: described flow transducer is installed on air inlet place or the place, gas outlet of described inlet valve.
4. arbitrary described anesthetic machine in 3 according to claim 1, it is characterized in that, described valve control unit comprises valve driving circuit and digital-to-analogue driver element, the control signal of being sent by master controller is through after digital-to-analogue driver element and the valve driving circuit, the inlet valve folding in the control air-channel system.
5. arbitrary described anesthetic machine in 3 according to claim 1, it is characterized in that, described parameter processing unit comprises amplifying circuit and AD conversion unit, the signal of telecommunication of described flow transducer amplifies through amplifying circuit, then carries out being transferred to master controller after the analog digital conversion through AD conversion unit.
6. anesthetic machine inlet valve calibration steps comprises the steps: the valve opening of main controller controls inlet valve, and simultaneously by inlet valve gas flow rate corresponding to flow transducer Real-time Obtaining, the valve harmony in the exterior of opening that obtains inlet valve closes the valve table; Described flow transducer is arranged in the air-breathing gas circuit.
7. anesthetic machine inlet valve calibration steps according to claim 6 is characterized in that: comprise the maximum process of opening valve digital-to-analogue value that obtains:
Master controller initially leaves valve digital-to-analogue value by the valve driver element with certain and opens inlet valve, and obtain the corresponding flow velocity of initially opening valve digital-to-analogue value by parameter processing unit from flow monitor, judge whether again to surpass set point, if do not surpass set point, then strengthen the degree of opening inlet valve, surpass the scope of setting until judge flow velocity, obtain maximum and open valve digital-to-analogue value.
8. according to claim 6 or 7 described anesthetic machine inlet valve calibration steps, it is characterized in that, comprise the minimum process of opening valve digital-to-analogue value that obtains:
Master controller initially leaves valve digital-to-analogue value by the valve driver element with certain and opens inlet valve, and obtain the corresponding flow velocity of initially opening valve digital-to-analogue value by parameter processing unit from flow monitor, judge whether again less than set point, if not less than set point, then reduce to open the degree of inlet valve, until judge flow velocity less than the scope of setting, obtain minimum and open valve digital-to-analogue value.
9. anesthetic machine inlet valve calibration steps according to claim 8 is characterized in that, obtains inlet valve and opens the detailed process of valve table and comprise:
Master controller leaves valve digital-to-analogue value by the valve driver element with minimum and opens inlet valve, and by the flow velocity of parameter processing unit from flow monitor acquisition correspondence, judge whether again to reach maximum and open valve digital-to-analogue value, if do not reach, then strengthen the degree of opening inlet valve, reach maximum and open valve digital-to-analogue value until judge, valve opening-flow speed value that record is corresponding, what obtain inlet valve opens the valve table.
10. anesthetic machine inlet valve calibration steps according to claim 8 is characterized in that, the detailed process of obtaining inlet valve pass valve table comprises:
Master controller leaves valve digital-to-analogue value by the valve driver element with maximum and opens inlet valve, and by the flow velocity of parameter processing unit from flow monitor acquisition correspondence, judge whether again to reach minimum and open valve digital-to-analogue value, if do not reach, the degree of then less unlatching inlet valve reaches minimum and drives valve until judge.
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| CN 200710074579 CN101310788B (en) | 2007-05-25 | 2007-05-25 | Anesthesia apparatus and calibration method of suction valve thereof |
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| CN 200710074579 CN101310788B (en) | 2007-05-25 | 2007-05-25 | Anesthesia apparatus and calibration method of suction valve thereof |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102397616B (en) * | 2010-09-07 | 2014-11-05 | 北京航天长峰股份有限公司 | Automatic calibration method for sensor of breathing machine |
| CN102441213B (en) * | 2010-10-09 | 2015-08-19 | 深圳迈瑞生物医疗电子股份有限公司 | Oxygen cell holder assembly, oxygen cell assembly and anesthetic machine |
| CN102266631A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Method and device for inspecting PEEP (positive end expiratory pressure) valve |
| CN103893891B (en) * | 2012-12-26 | 2016-03-02 | 北京谊安医疗系统股份有限公司 | A kind of method of calibration of respirator non-linear ratio valve |
| CN103893882B (en) * | 2012-12-28 | 2016-03-02 | 北京谊安医疗系统股份有限公司 | A kind of anesthesia machine flow modification method and device |
| CN103908725A (en) * | 2012-12-29 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | Electric control breathing machine or anesthesia machine proportional valve based automatic calibration method |
| CN103285483B (en) * | 2013-06-05 | 2015-07-22 | 深圳市瑞沃德生命科技有限公司 | Precise propelling type electronic anesthesia machine |
| CN105327436A (en) * | 2014-08-08 | 2016-02-17 | 北京谊安医疗系统股份有限公司 | Control circuit of air way pressure of anaesthesia machine |
| CN104225745B (en) * | 2014-10-17 | 2017-01-18 | 中国计量科学研究院 | Calibration device of breathing machine tester |
| CN104906677B (en) * | 2015-05-27 | 2017-12-19 | 西安汇智医疗集团有限公司 | A kind of flow measurement and control module that can correct valve opening automatically |
| CN106706354B (en) * | 2016-12-29 | 2023-07-21 | 南京舒普思达医疗设备有限公司 | Safety and performance detection equipment for inhalation type anesthesia system |
| CN110237374B (en) * | 2019-05-22 | 2022-03-08 | 东南大学 | Device for generating given inspiratory waveform and using method thereof |
| CN112827034B (en) * | 2020-12-31 | 2023-04-18 | 北京谊安医疗系统股份有限公司 | Calibration system and method for air suction valve of pneumatic electric control anesthesia machine |
| CN114082059B (en) * | 2021-12-24 | 2024-03-19 | 河北谊安奥美医疗设备有限公司 | Automatic calibration device and method for anesthesia machine |
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| SE9402537L (en) * | 1994-07-20 | 1996-01-21 | Siemens Elema Ab | Anesthesia System |
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