CN104225745A - Calibration device of breathing machine tester - Google Patents
Calibration device of breathing machine tester Download PDFInfo
- Publication number
- CN104225745A CN104225745A CN201410554972.5A CN201410554972A CN104225745A CN 104225745 A CN104225745 A CN 104225745A CN 201410554972 A CN201410554972 A CN 201410554972A CN 104225745 A CN104225745 A CN 104225745A
- Authority
- CN
- China
- Prior art keywords
- tester
- ventilator
- calibrated
- gas
- detection module
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to a calibration device of a breathing machine tester. The calibration device comprises an oxygen concentration mixing detection module, a static detection module and a dynamic detection module. The oxygen concentration mixing detection module generates mixed gas with the oxygen concentration ranging from 21 percent to 100 percent, and the inspiration oxygen concentration of the calibrated breathing machine tester is calibrated and traced back. The static detection module is used for carrying out calibration and tracing on static flow and static pressure parameters of the breathing machine tester. The dynamic detection module is used for carrying out calibration and tracing on dynamic flow and dynamic pressure parameters of the breathing machine tester. The dynamic flow and dynamic pressure parameters of the breathing machine tester are calibrated and traced back with the same module, the capacity control mode is adopted, and it can be guaranteed that all parameters are stable and controllable when the calibration device is used as a standard signal generator.
Description
Technical field
The present invention relates to a kind of calibration (tracing to the source) device of medical testing equipment, particularly relate to a kind of Ventilator Tester calibrating installation.
Background technology
Respirator is the important armarium in current clinical medicine field, and as the armarium that multiparameter exports, characteristic of its metering is directly connected to clinical application effect.Ventilator Tester is the equipment detecting respirator running parameter and precision, and for the measurement and calibration of respirator, can be understood as is the aggregation of sensor.
The metering of respirator is traced to the source particularly important for the safety and effectiveness of guaranteeing respirator clinical practice, and the metering of respirator is traced to the source and comprised: the measurement and calibration of respirator and the measurement and calibration of Ventilator Tester.At present, the problem of respirator measurement and calibration is resolved, the measurement and calibration of Ventilator Tester is then because existing Ventilator Tester calibrating installation also exists gas serious leak when tidal volume detects, oxygen concentration mixing resultant error is more than 30%, PIP, end expiratory positive pressure, inspiratory/expiratory, parameters in series many deficiencies such as cannot to detect, make effectively the measurement and calibration of various Ventilator Tester to be united, as the bridge of magnitude tracing, make between various Ventilator Tester and national measurement benchmark, to form the value chain meeting measurement criteria and require, thus the metering magnitude tracing of respirator relevant operating parameter is caused effectively not realize.
Effective solution of Ventilator Tester measurement and calibration problem, there is provided precision reference by the measurement and calibration for respirator product, thus guarantee that the relevant units such as metrological service at different levels, clinical unit, respirator goods producer utilize breath test instrument to carry out the effectiveness of respirator output parameter measurement.To evading and stopping playing a significant role of the malpractice that causes due to the incorrect of respirator output parameter and respirator operation irregularity in respirator Clinical practice or mistake.
By calibrating Ventilator Tester, the magnitude tracing between the running parameter of respirator and national measurement benchmark can be realized.Thus provide precision reference and beasurement base for the measurement and calibration of respirator, guarantee the effectiveness of the accuracy of detection of existing various Ventilator Tester, finally guarantee the effectiveness of respirator measurement and calibration work.
Summary of the invention
The object of the invention is to, a kind of novel Ventilator Tester calibrating installation is provided, making it trace to the source to Ventilator Tester dynamic flow and the calibration of dynamic pressure parameter uses identical module to carry out, and adopts volume control pattern, ensures that parameters is stable, controlled; Wherein, when carrying out calibration to dynamic flow parameter and tracing to the source, by the gas flow controller that three components is not made up of cylinder, push rod, push rod controller and grating scale, cylinder can be made in the air-breathing, expiratory duration of regulation, to complete the simulation of respiratory according to the capability value of setting, when carrying out calibration to dynamic pressure parameter and tracing to the source, real closed-loop path can be formed by test lung, ensure the stable of gas pressure.
Another object of the present invention is to, a kind of novel Ventilator Tester calibrating installation is provided, make it by high-purity nitrogen and medical high-purity oxygen are carried out ratio mixing according to setting value, oxygen concentration mix homogeneously in mist, accurately can be made, export even, stable mist, and the mixing of any setting ratio can be realized within the scope of gamut, oxygen concentration is adjustable, and pure oxygen flow velocity is adjustable.
The object of the invention to solve the technical problems adopts following technical scheme to realize.According to a kind of Ventilator Tester calibrating installation that the present invention proposes, it comprises: oxygen concentration hybrid detection module, Static Detection module and dynamic detection module; It is the mist of 21% ~ 100% that described oxygen concentration hybrid detection module produces oxygen ranges, and carries out calibration to the air-breathing oxygen concentration of the Ventilator Tester be calibrated and trace to the source; Described Static Detection module is carried out calibration to the quiescent flow of the Ventilator Tester be calibrated and static pressure parameter and is traced to the source; Described dynamic detection module is carried out calibration to the dynamic flow of the Ventilator Tester be calibrated and dynamic pressure parameter and is traced to the source; Wherein, described dynamic detection module is provided with three groups of gas flow controllers, often organizes described gas flow controller and includes: cylinder, push rod, push rod controller and grating scale, and the volume of the described cylinder of gas flow controller described in three groups is different; Wherein, the described push rod controller often organizing described gas flow controller is connected with described push rod, and described push rod is connected with the piston rod of described cylinder, drives the piston of described piston rod to move reciprocatingly in described cylinder simulated respiration process; The air inlet of described cylinder is connected by pipeline with air source of the gas, and the gas outlet of described cylinder is connected by pipeline with the import of the Ventilator Tester be calibrated; Described grating scale is arranged at described push rod, detects the displacement of described push rod; Wherein, when carrying out calibration to the dynamic flow parameter of the Ventilator Tester be calibrated and tracing to the source, the calibration point according to arranging starts gas flow controller described in three groups respectively; And when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated and tracing to the source, only start wherein gas flow controller described in a group; Described dynamic detection module is also provided with test lung, and described test lung is connected by pipeline with the gas outlet of the Ventilator Tester be calibrated, and makes described dynamic detection module form closed-loop path with the Ventilator Tester be calibrated, and ensures the stable of gas pressure; Wherein, the gas outlet connecting described cylinder with the pipeline of the air inlet of the Ventilator Tester be calibrated also are provided with mass-flow gas meter, piezometer, Pitot tube and micro-pressure-difference transmitter.
Object of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid Ventilator Tester calibrating installation, wherein the described cylinder of gas flow controller described in three groups is by being connected respectively by pipeline and described air source of the gas and the Ventilator Tester that is calibrated after the parallel connection of valve island; The volume of the described cylinder of three groups of gas flow controllers is respectively (0 ~ 200) ml, (0 ~ 600) ml and (0 ~ 1500) ml; When carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated and tracing to the source, only start the volume of described cylinder for gas flow controller described in a group of (0 ~ 600) ml.
Aforesaid Ventilator Tester calibrating installation, the pipeline be wherein connected with described valve island at the described cylinder of described gas flow controller is provided with two position three-way valve, the first interface of described two position three-way valve is connected by pipeline with described valve island, second interface of described two position three-way valve is connected by pipeline with the gas outlet of described cylinder, and the 3rd interface of described two position three-way valve is connected by pipeline with the air inlet of described cylinder; Also be provided with check valve in described dynamic detection module, described test lung is connected with the entrance of described check valve, the outlet emptying of described check valve; When carrying out calibration to the dynamic flow of the Ventilator Tester be calibrated and dynamic pressure parameter and tracing to the source, described gas flow controller carrys out simulated respiration process with the reciprocating motion of piston in described cylinder; Wherein, when simulating exhalation process, described air source of the gas and described cylinder are by described valve island conducting, there is provided to described cylinder and breathe air used, the now first interface of described two position three-way valve and the 3rd interface conducting, described one-way valve opens, described test lung is by the outside aerofluxus of described check valve; When simulating breathing process, described cylinder and the Ventilator Tester be calibrated are by described valve island conducting, supply gas to the Ventilator Tester be calibrated, the now first interface of described two position three-way valve and the second interface conducting, described closed check valve, gas enters described test lung by the Ventilator Tester be calibrated.
Aforesaid Ventilator Tester calibrating installation, wherein when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated and tracing to the source, described Pitot tube and described micro-pressure-difference transmitter be with the use of, detect " PIP " value.
Aforesaid Ventilator Tester calibrating installation, wherein said dynamic detection module is also provided with constant voltage source of the gas, described constant voltage source of the gas provides lasting pressure when calibrating trace to the source to the dynamic pressure parameter of the Ventilator Tester be calibrated in pipeline, realizes the effective simulation to end expiratory positive pressure.
Aforesaid Ventilator Tester calibrating installation, wherein said constant voltage source of the gas in pipeline, continues to provide a stable little pressure as end expiratory positive pressure using small blast fan.
Aforesaid Ventilator Tester calibrating installation, wherein said oxygen concentration hybrid detection module high-purity nitrogen and medical high-purity oxygen is carried out ratio according to setting value be mixed to get the mist that oxygen ranges is 21% ~ 100%; Described oxygen concentration hybrid detection module is provided with gas mixing pipe, and high-purity nitrogen and medical high-purity oxygen are that two pipelines by being connected with one end of described gas mixing pipe enter in described gas mixing pipe and mix respectively; Wherein, two described pipelines are equipped with filter, Pressure gauge, pressure regulator valve, check valve, mass flow controller and diaphragm valve, the one end be connected with two described pipelines at described gas mixing pipe is also provided with vacuum generator; The other end of described gas mixing pipe is connected by pipeline with the entry/exit QI KOU of the Ventilator Tester be calibrated, and the pipeline that described gas mixing pipe is connected with the entry/exit QI KOU of the Ventilator Tester be calibrated is provided with humiture instrument, effusion meter, oxygen concentration instrument, diaphragm valve, pressure regulator valve and Pressure gauge.
Aforesaid Ventilator Tester calibrating installation, wherein said oxygen concentration instrument utilizes the air-breathing oxygen concentration of the paramagnetism of oxygen detection oxygen concentration to the Ventilator Tester be calibrated to carry out calibration to trace to the source.
Aforesaid Ventilator Tester calibrating installation, the other end of wherein said gas mixing pipe is also connected with a branch road, and air is entered by described branch road and connects described gas mixing pipe and the pipeline of the entry/exit QI KOU of the Ventilator Tester be calibrated, and realizes the calibration to air; Wherein on described branch road, be provided with filter, Pressure gauge, pressure regulator valve and diaphragm valve successively.
Aforesaid Ventilator Tester calibrating installation, described dynamic detection module can be calibrated the following parameter of the Ventilator Tester be calibrated: tidal volume, gas flow rate, inspiratory duration, expiratory duration, inspiratory/expiratory, respiratory frequency, minute ventilation, Mean airway pressure, PIP, end expiratory positive pressure, breath holding time, platform pressure and compliance.
The present invention compared with prior art has obvious advantage and beneficial effect.By technique scheme, Ventilator Tester calibrating installation of the present invention at least has following advantages and beneficial effect:
It is use identical module to carry out that Ventilator Tester calibrating installation of the present invention is traced to the source to Ventilator Tester dynamic flow and the calibration of dynamic pressure parameter, adopts volume control pattern, ensures that parameters is stable, controlled; Wherein, when carrying out calibration to dynamic flow parameter and tracing to the source, by the gas flow controller that three components is not made up of cylinder, push rod, push rod controller and grating scale, cylinder can be made in the air-breathing, expiratory duration of regulation, to complete the simulation of respiratory according to the capability value of setting, when carrying out calibration to dynamic pressure parameter and tracing to the source, real closed-loop path can be formed by test lung, ensure the stable of gas pressure.
Ventilator Tester calibrating installation of the present invention is by carrying out ratio mixing by high-purity nitrogen and medical high-purity oxygen according to setting value, oxygen concentration mix homogeneously in mist, accurately can be made, export even, stable mist, and the mixing of any setting ratio can be realized within the scope of gamut, oxygen concentration is adjustable, and pure oxygen flow velocity is adjustable.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of description, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the composition structural representation that the dynamic detection module of Ventilator Tester calibrating installation of the present invention is carried out dynamic flow parametric calibration and traced to the source.
Fig. 2 is the composition structural representation that the dynamic detection module of Ventilator Tester calibrating installation of the present invention is carried out dynamic pressure parametric calibration and traced to the source.
Fig. 3 is the composition structural representation of the oxygen concentration hybrid detection module of Ventilator Tester calibrating installation of the present invention.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its detailed description of the invention of Ventilator Tester calibrating installation proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Ventilator Tester calibrating installation of the present invention is used to the standard of measurement calibrating Ventilator Tester, can be understood as is the respirator that one has " high accuracy ", or perhaps integrates the equipment of standard signal generation, signal monitoring, comparing.Calibrating installation, primarily of oxygen concentration hybrid detection module, Static Detection module and dynamic detection module composition, can realize the air-breathing oxygen concentration to Ventilator Tester, quiescent flow and static pressure parameter, the calibration of dynamic flow and dynamic pressure parameter traces to the source.
Air-breathing oxygen concentration is one of key parameter of Ventilator Tester, and the scope of the most frequently used oxygen concentration is 40% ~ 60% clinically.Prior art mainly adopts the method for proportion of installation control valve in pipeline to realize the mixed function of gas with various.It is be mixed to get the mist of needs (due to two kinds of gas concentrations slightly difference by high-purity nitrogen and medical high-purity oxygen are carried out ratio according to setting value that the oxygen concentration of Ventilator Tester calibrating installation of the present invention regulates, completely proportionally can not be worth mixing, therefore certain proportionality coefficient is added during mixed gas), and utilize the air-breathing oxygen concentration of the paramagnetism of oxygen to the Ventilator Tester be calibrated to carry out calibration to trace to the source.As calibrating installation, Ventilator Tester calibrating installation of the present invention needs to cover more fully measuring range, and therefore, the measuring range of the oxygen concentration of Ventilator Tester calibrating installation of the present invention is 21% ~ 100%, stepping 1%, certainty of measurement≤1%.
Referring to shown in Fig. 3, is the composition structural representation of the oxygen concentration hybrid detection module of Ventilator Tester calibrating installation of the present invention.The oxygen concentration hybrid detection module of Ventilator Tester calibrating installation of the present invention is primarily of gas mixing pipe 107, filter 101, Pressure gauge 102,104, pressure regulator valve 103,113, mass flow controller 105, pneumatic diaphragm valve 106, vacuum generator 108, humiture instrument 109, effusion meter 110,116, oxygen concentration instrument 111, manual diaphragm valve 112, diaphragm valve 115 and pipeline form.
Wherein, high-purity nitrogen (N2) and medical high-purity oxygen (O2) enter in gas mixing pipe 107 respectively by two pipelines be connected with one end of gas mixing pipe 107 and mix, two pipelines are equipped with filter 101, Pressure gauge 102, pressure regulator valve 103, Pressure gauge 104, mass flow controller 105 and pneumatic diaphragm valve 106, the one end be connected at gas mixing pipe 107 and this two pipelines is also provided with vacuum generator 108, and vacuum generator 108 is also provided with pneumatic diaphragm valve 106 and Pressure gauge 104 on the pipeline be connected with gas mixing pipe 107.The other end of gas mixing pipe 107 is connected by pipeline with the entry/exit QI KOU of the Ventilator Tester be calibrated, and the pipeline that gas mixing pipe is connected with the entry/exit QI KOU of the Ventilator Tester be calibrated is provided with humiture instrument 109, effusion meter 110, oxygen concentration instrument 111, manual diaphragm valve 112, pressure regulator valve 113, Pressure gauge 104, pneumatic diaphragm valve 115 and effusion meter 116.Wherein, oxygen concentration instrument 111 of the present invention utilizes the air-breathing oxygen concentration of the paramagnetism of oxygen detection oxygen concentration to the Ventilator Tester be calibrated to carry out calibration to trace to the source.
As shown in Figure 3, also a branch road can be provided with in oxygen concentration hybrid detection module of the present invention, this branch road is connected with the other end of gas mixing pipe 107, air (AIR) thus branch road enters connection gas mixing pipe 107 and the pipeline of the entry/exit QI KOU of the Ventilator Tester be calibrated, and can realize the calibration to air.Wherein, this branch road is provided with filter 101, Pressure gauge 102, pressure regulator valve 103, Pressure gauge 104 and pneumatic diaphragm valve 106.
Oxygen concentration hybrid detection module of the present invention can make oxygen concentration mix homogeneously, accurately, export even, stable mist, and can to set arbitrarily ratio mixing within the scope of gamut, its oxygen concentration is adjustable, pure oxygen flow velocity is adjustable (Ventilator Tester has self-checking function, needs to lead to pure oxygen to it with the flow velocity of more than 10L/min).
Static Detection module of the present invention can be carried out calibration to the quiescent flow of the Ventilator Tester be calibrated and static pressure parameter and be traced to the source, and dynamic detection module can be carried out calibration to the dynamic flow of the Ventilator Tester be calibrated and dynamic pressure parameter and be traced to the source.In order to can the respiratory of mock standard better, the dynamic detection module of Ventilator Tester calibrating installation of the present invention adopts volume control pattern, and therefore when calibrating installation is as " reference signal generator ", its parameters is stable, controlled.
Refer to shown in Fig. 1 and Fig. 2, Fig. 1 is the composition structural representation that the dynamic detection module of Ventilator Tester calibrating installation of the present invention is carried out dynamic flow parametric calibration and traced to the source, and Fig. 2 is the composition structural representation that the dynamic detection module of Ventilator Tester calibrating installation of the present invention is carried out dynamic pressure parametric calibration and traced to the source.The dynamic detection module of Ventilator Tester calibrating installation of the present invention is primarily of gas flow controller, air source of the gas 215, piezometer 216, Pitot tube and micro-pressure-difference transmitter 217, mass-flow gas meter 219, and test lung 220 and pipeline form.
Wherein, three groups of gas flow controllers are provided with in dynamic detection module, often organize gas flow controller to include: cylinder 201,202 or 203, push rod 204,205 or 206, push rod controller 207,208 or 209 and grating scale 210,211 or 212, and the volume of three of three groups of gas flow controllers cylinders 201,202,203 is different.Wherein, the push rod controller 207,208,209 often organizing gas flow controller connects with corresponding push rod 204,205,206 respectively, push rod 204,205,206 connects with the piston rod of corresponding cylinder 201,202,203 respectively, the piston of piston rod moves reciprocatingly in cylinder 201,202,203, simulated respiration process.The air inlet of three cylinders 201,202,203 is connected by pipeline with air source of the gas 215, and the gas outlet of three cylinders 201,202,203 is connected by pipeline with the air inlet of the Ventilator Tester 300 be calibrated.Grating scale 210,211,212 is arranged at corresponding push rod 204,205,206 respectively, detects the displacement of push rod 204,205,206.
The present invention is when carrying out calibration and tracing to the source to the dynamic flow parameter of the Ventilator Tester 300 be calibrated, calibration point according to arranging starts three groups of gas flow controllers respectively, and when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester 300 be calibrated and tracing to the source, only start wherein one group of gas flow controller.
Test lung 220 is connected by pipeline with the gas outlet of the Ventilator Tester 300 be calibrated, and makes dynamic detection module form closed-loop path with the Ventilator Tester 300 be calibrated, and ensures the stable of gas pressure.
Piezometer 216, mass-flow gas meter 219, Pitot tube and micro-pressure-difference transmitter 217 are arranged at the gas outlet being connected cylinder 201,202,203 with on the pipeline of the air inlet of the Ventilator Tester 300 be calibrated.When carrying out calibration to the dynamic flow parameter of the Ventilator Tester 300 be calibrated and tracing to the source, piezometer 216, Pitot tube and micro-pressure-difference transmitter 217 do not work.When carrying out calibration to the dynamic pressure parameter of the Ventilator Tester 300 be calibrated and tracing to the source, Pitot tube and micro-pressure-difference transmitter 217 with the use of, detect " PIP " value.
In a preferred embodiment of the present invention, the cylinder 201,202,203 of three groups of gas flow controllers is by being connected respectively by pipeline and air source of the gas 215 and the Ventilator Tester 300 that is calibrated after the parallel connection of valve island 214.The volume of the cylinder 201,202,203 of three groups of gas flow controllers is respectively (0 ~ 200) ml, (0 ~ 600) ml and (0 ~ 1500) ml.Wherein, when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester 300 be calibrated and tracing to the source, the volume only starting cylinder is one group of gas flow controller of (0 ~ 600) ml.
In a preferred embodiment of the present invention, the pipeline that the cylinder 201,202,203 of gas flow controller is connected with valve island 214 is provided with two position three-way valve 213, the first interface a of two position three-way valve 213 is connected by pipeline with valve island 214, second interface b of two position three-way valve 213 is connected by pipeline with the gas outlet of cylinder 201,202,203, and the 3rd interface c of two position three-way valve 213 is connected by pipeline with the air inlet of cylinder 201,202,203.Also be provided with check valve 221 in dynamic detection module, test lung 220 is connected with the entrance of check valve 221, the outlet emptying of check valve 221.
When carrying out calibration to the dynamic flow of the Ventilator Tester 300 be calibrated and dynamic pressure parameter and tracing to the source, gas flow controller carrys out simulated respiration process with the reciprocating motion of piston in cylinder 201,202 or 203.Wherein, when simulating exhalation process, air source of the gas 215 and cylinder 201,202 or 203 are by valve island 214 conducting, there is provided to cylinder 201,202 or 203 and breathe air used, the now first interface a of two position three-way valve 213 and the 3rd interface c conducting, check valve 221 is opened, and test lung 220 is by check valve 221 outwards aerofluxus.When simulating breathing process, cylinder 201,202 or 203 and the Ventilator Tester 300 that is calibrated are by valve island 214 conducting, supply gas to the Ventilator Tester 300 be calibrated, the now first interface a of two position three-way valve 213 and the second interface b conducting, check valve 221 is closed, and gas enters test lung 220 by the Ventilator Tester 300 be calibrated.
End expiratory positive pressure is all a very important index in respirator and Ventilator Tester calibration, it represent the pressure of alveolar, the present invention is by arranging constant voltage source of the gas 218 in dynamic detection module, when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester 300 be calibrated and tracing to the source, lasting pressure is provided in pipeline, achieves the effective simulation to end expiratory positive pressure.Wherein, constant voltage source of the gas 218 can be in pipeline, continue to provide a stable little pressure to be used as end expiratory positive pressure with small blast fan, and carrying out not working when calibration is traced to the source to the dynamic flow parameter of the Ventilator Tester 300 be calibrated.
Ventilator Tester calibrating installation of the present invention can be calibrated the tidal volume of the dynamic flow parameter of the Ventilator Tester be calibrated, gas flow rate, inspiratory duration, expiratory duration, inspiratory/expiratory, respiratory frequency and minute ventilation.
Wherein, when calibrating tidal volume, according to tidal volume test point, control corresponding one group of flow controller by calibration software to start, it is made to provide tidal volume values accurately according to setting value, the overall process of simultaneously at every turn to be bled to cylinder by mass-flow gas meter and supply gas carries out integration, plays auxiliary supervisory function bit.When calibrating gas flow rate, be sampled by mass-flow gas meter read and preserve corresponding data.When calibrating inspiratory duration, be by calibration software setting value, internal gas has been pushed away the time used by record cylinder, and compares with the duration of ventilation of the Ventilator Tester be calibrated, and reaches the object of calibration.When calibrating expiratory duration, be by calibration software setting value, record test lung by inner its gas drained time used, and is compared with the time that the Ventilator Tester be calibrated does not have gas to pass through, and reaches the object of crying calibration.When calibrating inspiratory/expiratory, being by above-mentioned " inspiratory duration " ratio with " expiratory duration ", being calculated by calibration software and obtain.When calibrating minute ventilation, being that the capacity that cylinder per minute is supplied gas is added up, and being calculated by calibration software.
Ventilator Tester calibrating installation of the present invention can be calibrated the Mean airway pressure of the dynamic pressure parameter of the Ventilator Tester be calibrated, PIP, end expiratory positive pressure, breath holding time, platform pressure and compliance.
Wherein, when carrying out calibration to dynamic pressure parameter and tracing to the source, only start the gas flow controller that volume is (0 ~ 600) ml cylinder place, when calibrating PIP, cylinder is supplied gas according to the stable flow velocity of " half is trapezoidal ", detect by micro-pressure-difference transmitter and Pitot tube the peak value that in whole process of supplying gas, pressure changes, namely obtain PIP.When calibrating end expiratory positive pressure, be continue to provide a very stable little airflow by constant voltage source of the gas, this stable pressure is exactly end expiratory positive pressure, air feed scope: ± 12kPa.When calibrating Mean airway pressure, the average pressure of motion of namely supplying gas at every turn/bleed utilizes piezometer to sample to obtain repeatedly the meansigma methods of reading, by calculating.When calibrating breath holding time, the interval between namely supplying gas at every turn and bleeding is controlled by calibration software, makes time < 1s, and this time needs adjustable.When compressing into row calibration to platform, i.e. the plateau pressure of breath holding time finish time, needs calibration software to record this force value when breath holding time stops.When calibrating compliance, being arranged by test lung and numerical value is provided, being generally 0.2.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art are not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a Ventilator Tester calibrating installation, is characterized in that it comprises: oxygen concentration hybrid detection module, Static Detection module and dynamic detection module; It is the mist of 21% ~ 100% that described oxygen concentration hybrid detection module produces oxygen ranges, and carries out calibration to the air-breathing oxygen concentration of the Ventilator Tester be calibrated and trace to the source; Described Static Detection module is carried out calibration to the quiescent flow of the Ventilator Tester be calibrated and static pressure parameter and is traced to the source; Described dynamic detection module is carried out calibration to the dynamic flow of the Ventilator Tester be calibrated and dynamic pressure parameter and is traced to the source;
Wherein, described dynamic detection module is provided with three groups of gas flow controllers, often organize described gas flow controller to include: cylinder (201,202,203), push rod (204,205,206), push rod controller (207,208,209) and grating scale (210,211,212), and the volume of the described cylinder of gas flow controller described in three groups (201,202,203) is different; Wherein, the described push rod controller (207,208,209) often organizing described gas flow controller is connected with described push rod (204,205 or 206), described push rod (204,205,206) is connected with the piston rod of described cylinder (201,202,203), drives the piston of described piston rod to move reciprocatingly in described cylinder (201,202,203) simulated respiration process; The air inlet of described cylinder (201,202,203) is connected by pipeline with air source of the gas (215), and the gas outlet of described cylinder (201,202,203) is connected by pipeline with the import of the Ventilator Tester be calibrated (300); Described grating scale (210,211,212) is arranged at described push rod (204,205,206), detects the displacement of described push rod (204,205,206); Wherein, when carrying out calibration to the dynamic flow parameter of the Ventilator Tester be calibrated (300) and tracing to the source, the calibration point according to arranging starts gas flow controller described in three groups respectively; And when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated (300) and tracing to the source, only start wherein gas flow controller described in a group;
Described dynamic detection module is also provided with test lung (220), described test lung (220) is connected by pipeline with the gas outlet of the Ventilator Tester be calibrated (300), make described dynamic detection module form closed-loop path with the Ventilator Tester (300) be calibrated, ensure the stable of gas pressure; Wherein, the gas outlet connecting described cylinder (201,202,203) with the pipeline of the air inlet of the Ventilator Tester (300) be calibrated also are provided with piezometer (216), mass-flow gas meter (219), Pitot tube and micro-pressure-difference transmitter (217).
2. Ventilator Tester calibrating installation according to claim 1, is characterized in that the described cylinder (201,202,203) of wherein gas flow controller described in three groups is by being connected respectively by pipeline and described air source of the gas (215) and the Ventilator Tester (300) that is calibrated after valve island (214) parallel connection; The volume of the described cylinder (201,202,203) of three groups of gas flow controllers is respectively (0 ~ 200) ml, (0 ~ 600) ml and (0 ~ 1500) ml; When carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated (300) and tracing to the source, only start the volume of described cylinder for gas flow controller described in a group of (0 ~ 600) ml.
3. Ventilator Tester calibrating installation according to claim 2, it is characterized in that wherein at the described cylinder (201 of described gas flow controller, 202, 203) pipeline be connected with described valve island (214) is provided with two position three-way valve (213), the first interface (a) of described two position three-way valve (213) is connected by pipeline with described valve island (214), second interface (b) and the described cylinder (201 of described two position three-way valve (213), 202, 203) gas outlet is connected by pipeline, 3rd interface (c) and the described cylinder (201 of described two position three-way valve (213), 202, 203) air inlet is connected by pipeline,
Also be provided with check valve (221) in described dynamic detection module, described test lung (220) is connected with the entrance of described check valve (221), the outlet emptying of described check valve (221);
When carrying out calibration to the dynamic flow of the Ventilator Tester be calibrated (300) and dynamic pressure parameter and tracing to the source, described gas flow controller carrys out simulated respiration process with the reciprocating motion of piston in described cylinder (201,202,203); Wherein, when simulating exhalation process, described air source of the gas (215) and described cylinder (201,202,203) are by the conducting of described valve island (214), there is provided to described cylinder (201,202,203) and breathe air used, now first interface (a) and the 3rd interface (c) conducting of described two position three-way valve (213), described check valve (221) is opened, and described test lung (220) is by described check valve (221) outwards aerofluxus; When simulating breathing process, described cylinder (201,202,203) and the Ventilator Tester (300) be calibrated are by the conducting of described valve island (214), supply gas to the Ventilator Tester be calibrated (300), now first interface (a) and second interface (b) conducting of described two position three-way valve (213), described check valve (221) is closed, and gas enters described test lung (220) by the Ventilator Tester (300) be calibrated.
4. Ventilator Tester calibrating installation according to claim 1, it is characterized in that wherein when carrying out calibration to the dynamic pressure parameter of the Ventilator Tester be calibrated (300) and tracing to the source, described Pitot tube and micro-pressure-difference transmitter (217) be with the use of, detect " PIP " value.
5. Ventilator Tester calibrating installation according to claim 1, it is characterized in that wherein said dynamic detection module is also provided with constant voltage source of the gas (218), described constant voltage source of the gas (218) provides lasting pressure when calibrating trace to the source to the dynamic pressure parameter of the Ventilator Tester be calibrated (300) in pipeline, realizes the effective simulation to end expiratory positive pressure.
6. Ventilator Tester calibrating installation according to claim 4, is characterized in that wherein said constant voltage source of the gas (218) in pipeline, continues to provide a stable little pressure as end expiratory positive pressure using small blast fan.
7. the Ventilator Tester calibrating installation according to claim arbitrary in claim 1 to 6, is characterized in that wherein said oxygen concentration hybrid detection module high-purity nitrogen and medical high-purity oxygen is carried out ratio according to setting value be mixed to get the mist that oxygen ranges is 21% ~ 100%; Described oxygen concentration hybrid detection module is provided with gas mixing pipe (107), and high-purity nitrogen and medical high-purity oxygen are that two pipelines by being connected with one end of described gas mixing pipe (107) enter in described gas mixing pipe (107) and mix respectively; Wherein, two described pipelines are equipped with filter (101), pressure (102,104) table, pressure regulator valve (103), mass flow controller (105) and diaphragm valve (106), are also provided with vacuum generator (108) in one end that described gas mixing pipe (107) is connected with two described pipelines; The other end of described gas mixing pipe (107) is connected by pipeline with the air inlet of the Ventilator Tester be calibrated, and the pipeline that described gas mixing pipe is connected with the air inlet of the Ventilator Tester be calibrated is provided with humiture instrument (109), effusion meter (110,116), oxygen concentration instrument (111), diaphragm valve (112,115), pressure regulator valve (113) and Pressure gauge (104).
8. Ventilator Tester calibrating installation according to claim 7, is characterized in that wherein said oxygen concentration instrument (111) utilizes the air-breathing oxygen concentration of the paramagnetism of oxygen detection oxygen concentration to the Ventilator Tester be calibrated to carry out calibration to trace to the source.
9. Ventilator Tester calibrating installation according to claim 7, it is characterized in that the other end of wherein said gas mixing pipe (107) is also connected with a branch road, air is entered by described branch road and connects described gas mixing pipe (107) and the pipeline of the air inlet of the Ventilator Tester be calibrated, and realizes the calibration to air; On described branch road, be wherein provided with filter (101), Pressure gauge (102,104), pressure regulator valve (103) and diaphragm valve (106) successively.
10. suction machine tester calibration device of exhaling according to claim 1, is characterized in that wherein said dynamic detection module can be calibrated the following parameter of the Ventilator Tester be calibrated: tidal volume, gas flow rate, inspiratory duration, expiratory duration, inspiratory/expiratory, respiratory frequency, minute ventilation, Mean airway pressure, PIP, end expiratory positive pressure, breath holding time, platform pressure and compliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554972.5A CN104225745B (en) | 2014-10-17 | 2014-10-17 | Calibration device of breathing machine tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554972.5A CN104225745B (en) | 2014-10-17 | 2014-10-17 | Calibration device of breathing machine tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104225745A true CN104225745A (en) | 2014-12-24 |
| CN104225745B CN104225745B (en) | 2017-01-18 |
Family
ID=52215207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410554972.5A Active CN104225745B (en) | 2014-10-17 | 2014-10-17 | Calibration device of breathing machine tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104225745B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104857607A (en) * | 2015-05-26 | 2015-08-26 | 深圳市安保科技有限公司 | Oxygen concentration calibration device |
| CN105987724A (en) * | 2015-02-26 | 2016-10-05 | 顺力西科技股份有限公司 | Test tool for respirator |
| CN106310472A (en) * | 2015-06-23 | 2017-01-11 | 湖南明康中锦医疗科技发展有限公司 | Breathing machine calibration equipment and breathing machine calibration system |
| CN107297007A (en) * | 2016-04-16 | 2017-10-27 | 湖南明康中锦医疗科技发展有限公司 | The measuring method and device of lung ventilator operational factor |
| CN109674476A (en) * | 2018-12-17 | 2019-04-26 | 中国医科大学附属第一医院 | A kind of measurement device reactive for the Respiratory Center Drive of chemical stimulation |
| CN111921048A (en) * | 2020-08-03 | 2020-11-13 | 暨南大学 | Device and method for external calibration of breathing machine |
| CN114306848A (en) * | 2022-01-06 | 2022-04-12 | 周子衣 | Portable pressure calibrator used with breathing machine |
| WO2023045216A1 (en) * | 2021-09-27 | 2023-03-30 | 深圳市计量质量检测研究院 | Automatic measurement calibration method and device for ventilator, and storage medium |
| CN115970118A (en) * | 2022-12-22 | 2023-04-18 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Calibrating device for respiratory humidification therapeutic instrument |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267721A (en) * | 1979-11-09 | 1981-05-19 | Timeter Instrument Corp. | Respiratory analyzer |
| WO2001047416A1 (en) * | 1999-12-23 | 2001-07-05 | Abb Patent Gmbh | Method and device for measuring a component of an analyte gas |
| CN1491127A (en) * | 2001-02-20 | 2004-04-21 | 3M | Method and system of calibrating air flow in respirator system |
| CN101153840A (en) * | 2006-09-29 | 2008-04-02 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for improving measurement precision of gas analyzer |
| CN101310788A (en) * | 2007-05-25 | 2008-11-26 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia apparatus and calibration method of suction valve thereof |
| CN101529232A (en) * | 2006-10-31 | 2009-09-09 | Ric投资有限责任公司 | System and method for calibrating a determination of partial pressure of one or more gaseous analytes |
-
2014
- 2014-10-17 CN CN201410554972.5A patent/CN104225745B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267721A (en) * | 1979-11-09 | 1981-05-19 | Timeter Instrument Corp. | Respiratory analyzer |
| WO2001047416A1 (en) * | 1999-12-23 | 2001-07-05 | Abb Patent Gmbh | Method and device for measuring a component of an analyte gas |
| CN1491127A (en) * | 2001-02-20 | 2004-04-21 | 3M | Method and system of calibrating air flow in respirator system |
| CN101153840A (en) * | 2006-09-29 | 2008-04-02 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for improving measurement precision of gas analyzer |
| CN101529232A (en) * | 2006-10-31 | 2009-09-09 | Ric投资有限责任公司 | System and method for calibrating a determination of partial pressure of one or more gaseous analytes |
| CN101310788A (en) * | 2007-05-25 | 2008-11-26 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia apparatus and calibration method of suction valve thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987724A (en) * | 2015-02-26 | 2016-10-05 | 顺力西科技股份有限公司 | Test tool for respirator |
| CN104857607A (en) * | 2015-05-26 | 2015-08-26 | 深圳市安保科技有限公司 | Oxygen concentration calibration device |
| CN104857607B (en) * | 2015-05-26 | 2017-09-05 | 深圳市安保科技有限公司 | A kind of oxygen concentration calibrating installation |
| CN106310472A (en) * | 2015-06-23 | 2017-01-11 | 湖南明康中锦医疗科技发展有限公司 | Breathing machine calibration equipment and breathing machine calibration system |
| CN107297007A (en) * | 2016-04-16 | 2017-10-27 | 湖南明康中锦医疗科技发展有限公司 | The measuring method and device of lung ventilator operational factor |
| CN109674476A (en) * | 2018-12-17 | 2019-04-26 | 中国医科大学附属第一医院 | A kind of measurement device reactive for the Respiratory Center Drive of chemical stimulation |
| CN111921048A (en) * | 2020-08-03 | 2020-11-13 | 暨南大学 | Device and method for external calibration of breathing machine |
| WO2023045216A1 (en) * | 2021-09-27 | 2023-03-30 | 深圳市计量质量检测研究院 | Automatic measurement calibration method and device for ventilator, and storage medium |
| CN114306848A (en) * | 2022-01-06 | 2022-04-12 | 周子衣 | Portable pressure calibrator used with breathing machine |
| CN115970118A (en) * | 2022-12-22 | 2023-04-18 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Calibrating device for respiratory humidification therapeutic instrument |
| CN115970118B (en) * | 2022-12-22 | 2023-08-04 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Respiratory humidification therapeutic instrument calibrating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104225745B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104225745A (en) | Calibration device of breathing machine tester | |
| Huszczuk et al. | A respiratory gas exchange simulator for routine calibration in metabolic studies | |
| CN101288791B (en) | Anesthesia apparatus respiration apparatus and marking method of its flow sensor | |
| CN205073460U (en) | Novel open -air rescue anesthesia machine | |
| US9943249B2 (en) | Respiratory gas monitor testing system and methods of use | |
| CN201692468U (en) | Intelligent fresh gas flow and oxygen concentration control device of anesthetic apparatus | |
| CN101829386A (en) | Intelligent fresh gas flow and oxygen concentration control device for anesthesia machine | |
| CN102012243A (en) | Method for detecting gas leakage quantity of medical instrument with respiration loop | |
| CN111658918A (en) | Multi-respiration index synchronous measurement system and method | |
| CN205163962U (en) | Breathe protection equipment combined test stand | |
| CN103330982A (en) | Test lung with self learning function | |
| CN103908713B (en) | A kind of detection method of Anesthesia machine or respirator system compliance | |
| CN109091147B (en) | A breath simulator for cardiopulmonary exercise function test | |
| CN212872122U (en) | Mask breathing resistance tester | |
| CN104605856B (en) | Two-chamber plethysmography box | |
| CN202903505U (en) | Gas concentration testing device of anesthetic vaporizer | |
| CN115575108A (en) | Device and method for rapidly testing oxygen supply performance of oxygen mask for airplane | |
| Zhang et al. | Development of ventilator tester calibration equipment | |
| CN115164963A (en) | Dynamic calibration device and method for respirator quality detector | |
| CN113567095B (en) | Oxygen supply performance test device of oxygen mask for airplane | |
| Nicholson et al. | The performance of a variable-flow indirect calorimeter | |
| CN205426298U (en) | Automatic school frock of marking of turbine anesthesia machine flow sensor | |
| Young et al. | Laboratory evaluation of the I-NOvent nitric oxide delivery device. | |
| CN210487545U (en) | Electric mask air supply amount detection device and electric mask air supply amount and purification performance detection device | |
| CN103330983A (en) | Test lung with characteristics of high frequency response and high precision control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |