CN103977493B - Can be used for the experiment porch of invasive ventilation gas leakage detection - Google Patents
Can be used for the experiment porch of invasive ventilation gas leakage detection Download PDFInfo
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- CN103977493B CN103977493B CN201410232944.1A CN201410232944A CN103977493B CN 103977493 B CN103977493 B CN 103977493B CN 201410232944 A CN201410232944 A CN 201410232944A CN 103977493 B CN103977493 B CN 103977493B
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Abstract
The invention belongs to can be used for the experiment porch (01) of invasive ventilation gas leakage detection, be specifically related to pressure and the flow synchronization monitoring of gas circuit difference during invasive ventilation are detected with processing the real-time of realization gas leakage.Its system includes a Ventilator Control System that can realize lung ventilator function, one gas leakage detection module (02) comprising multiple flow, pressure sensor and data collecting card, one micro-process based on LabVIEW and display unit (03), face shield and fixing device (04) thereof, simulation tracheae (05) and lung model (06).By design discharge and the driving of pressure sensor and filter circuit, and design data acquisition and processing (DAP) algorithm, multichannel flow, the synchronization monitoring of pressure signal and process can be realized.Connected by three kinds of different gas circuit structures and can realize three kinds of optional air leak real-time detection methods, be based on gas leakage bypass flow detection method respectively, exhale bypass flow difference detection method based on suction, and based on face shield front and back end flow difference detection method.
Description
Technical field
The invention belongs to can be used for the experiment porch of invasive ventilation gas leakage detection, be specifically related to invasive ventilation
During the pressure of gas circuit difference and flow synchronization monitoring and process, by three kinds of different gas circuit structures
Connect and realize three kinds of optional air leak real-time detection methods.
Background technology
Invasive ventilation is a kind of mechanical ventilation side that need not set up the artificial airway such as trachea cannula, air flue incision
Formula, having the patient of respiratory system exhaustion for treatment is effective assisted ventilation means.Alleviate because it has
Subsequent pulmonary damage, reduce that the ventilation death rate, comfort level be high and the advantage such as flexibly simple to operate, the widest
General it is applied to clinic and family.But gas leakage is the inevitable problem of invasive ventilation, ventilate including single-pipeline
Time deliberately gas leakage is set, and when using nose cup, per os gas leakage, face shield contact the factors such as the tightest with patient facial region
The involuntary gas leakage caused.Gas leakage can make patient not feel well, and reduces ventilation tolerance, and it is dense that impact sucks oxygen
Degree, affects lung ventilator and triggers and handoff functionality, reduce synchronism between human and machine energy, ventilatory effect brings bad shadow
Ring, even cause life danger, thus leakage problem can not be ignored.How uncontrollable gas leakage is examined
Survey and estimation air leakage is to have problem to be solved.The present invention has built one and can be used for invasive ventilation gas leakage inspection
The experiment porch surveyed, can realize the real-time detection to gas leakage, by design data acquisition and processing (DAP) program, and can
Realize multichannel flow, the synchronization monitoring of pressure signal and process, connected by three kinds of different gas circuit structures
Can realize three kinds of optional leak detection method, and then realize the real-time detection of gas leakage, for air leakage estimation and
Compensate the experiment basis providing certain.
Summary of the invention
The present invention is intended to build the experiment porch that can be used for invasive ventilation gas leakage detection, can realize to gas circuit not
Co-located flow and the synchronization monitoring of pressure signal and process, being connected by three kinds of different gas circuit structures can
Realize three kinds of optional air leak real-time detection methods.
The present invention be the technical scheme is that for achieving the above object
Can be used for the experiment porch of invasive ventilation gas leakage detection, including a Ventilator Control System, one
Gas leakage detection module, a micro-process based on LabVIEW and display unit, face shield and fixing device thereof,
Simulation tracheae and lung model, it is characterised in that described Ventilator Control System can provide different mode,
The supply of varying level, can be as a Use of respirator, and described gas leakage detection module comprises flow, pressure
Force snesor and driving, filter circuit and data collecting card, can realize multichannel flow and pressure signal
Detection, described micro-process based on LabVIEW and display unit can realize multichannel by the design of algorithm
The synchronous acquisition of signal, in real time display and process.
Further, above-mentioned face shield and fixing device thereof are connected with lung model through simulation tracheae, lung model
Clamping plate lung or active lung etc. can be used to have the certain elastic and device of resistance, simulation tracheae and lung model one
The characteristics such as human respiratory impedance, compliance are intended in molding.
Further, above-mentioned gas leakage detection module comprises multiple flow, pressure sensor and driving thereof, filtered electrical
Road, comprises a data collecting card, gas circuit flow and pressure signal when can be used for detecting and gather invasive ventilation.
For detection demand, flow, pressure sensor are positioned at following gas circuit characteristic point:
Characteristic point 1: gas leakage branch road stage casing, can detect Gas leak flow and pressure；
Characteristic point 2: inspiration limb stage casing, can detect inspiratory flow and pressure；
Characteristic point 3: expiration branch road stage casing, can detect expiratory gas flow and pressure；
Characteristic point 4: face shield front end and near face shield gas circuit at, can detect enter face shield gas flow and
Face shield forefront pressure；
Characteristic point 5: simulation tracheae stage casing, can detect the entrance lung model i.e. gas flow of face shield rear end and face
End pressure after cover.
Further, above-mentioned gas leakage detection module connected by three kinds of different gas circuit structures can realize three kinds optional
Air leak real-time detection method, be respectively based on gas leakage bypass flow detection method, exhale bypass flow poor based on suction
Value detection method, and based on face shield front and back end flow difference detection method.
Further, above-mentioned gas leakage detection module the gas circuit flow detected and pressure signal can be sent to based on
Micro-process of LabVIEW and display unit carry out signal analysis and processing.
Further, above-mentioned micro-process based on LabVIEW and display unit, can by LabVIEW programming realization
Synchronous acquisition multichannel flow, pressure signal also show in real time and preserve, and can carry out the signal gathered in real time
Filtering and numerical operation.
Further, above-mentioned micro-process based on LabVIEW and display unit, can by LabVIEW programming realization
Gather and show flow and pressure signal that Ventilator Control System provides, and the flow collected with sensor
And pressure signal is analyzed, gather the accuracy of signal for evaluation sensor.
Further, above-mentioned micro-process based on LabVIEW and display unit can get three by the design of algorithm
Plant the air leakage that different air leak real-time detection methods detect.
Further, above-mentioned micro-process based on LabVIEW and display unit can be real-time to three kinds of different gas leakage
Detection method is analyzed, and selects suitably to leak gas detection according to different application and applicable elements
Method.
Accompanying drawing explanation
Fig. 1 system constitutes schematic diagram
Fig. 2 multi-channel signal acquiring based on LabVIEW and real-time handler flow chart
Fig. 3 is based on gas leakage bypass flow detection method schematic diagram
Fig. 4 exhales bypass flow difference detection method schematic diagram based on suction
Fig. 5 is based on face shield front and back end flow difference detection method schematic diagram
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The experiment porch that can be used for invasive ventilation gas leakage detection as shown in Figure 1 includes: one can realize exhaling
The Ventilator Control System of suction machine function, a leakage comprising flow, pressure sensor and data collecting card
Gas detection module, a micro-process based on LabVIEW and display unit, face shield and fixing device thereof,
Simulation tracheae and lung model.Wherein:
(1) Ventilator Control System provides volume controlled or pressure controlled ventilation, face shield and fixing device thereof
Being connected with lung model through simulation tracheae, lung model can use clamping plate lung or active lung etc. to have certain elasticity
With the device of resistance, gas leakage detection module comprises flow, pressure sensor and data collecting card and will adopt
Collect to pressure P (t) and flow F (t) send to micro-process based on LabVIEW and display unit and carry out letter
Number real-time display and process.
(2) as in figure 2 it is shown, multi-channel signal acquiring based on LabVIEW and the stream of real-time handler
Cheng Tu, mainly includes four parts: multi channel signals synchronous acquisition, signal filtering, sensor characteristics is bent
Line matching, and the numerical operation of signal and preservation.
(3) as it is shown on figure 3, be gas leakage detection method based on gas leakage bypass flow, leak in gas circuit characteristic point
Flow, pressure sensor are placed in gas branch road stage casing, are used for directly detecting Gas leak flow Fleak(t) and pressure,
By the ∫ F that quadratures within a respiratory cycleleakT () dt, i.e. can get the air leakage in a cycle.
(4) as shown in Figure 4, for exhaling the gas leakage detection method of bypass flow difference based on suction, respectively in gas circuit
Flow, pressure sensor are placed in characteristic point inspiration limb stage casing and expiration branch road stage casing, detect inspiratory flow
FI(t) and expiratory gas flow FET (), pressure of inspiration(Pi) and breath pressure, by respectively in inspiratory limb and expiration section
Quadrature ∫ FI(t) dt and ∫ FE(t) dt, then ask the two difference i.e. to can get the air leakage in a cycle.
(5) as it is shown in figure 5, be gas leakage detection method based on face shield front and back end flow difference, respectively at gas
Interrupt with simulation tracheae at the gas circuit of characteristic point face shield front end, road and close face shield placing flow, pressure biography
Sensor, detects face shield front end flow FF(t) and rear end flow FB(t), face shield forefront pressure and rear end pressure,
By quadraturing ∫ F in inspiratory limbF(t) dt and ∫ FB(t) dt, then ask the two difference i.e. to can detect that inspiratory limb
Air leakage.
(6) Ventilator Control System that micro-process based on LabVIEW and display unit can will collect
Flow and pressure signal that the flow be given and pressure signal collect with sensor are analyzed, and use
The accuracy of signal is gathered in evaluation sensor.
(7) micro-process based on LabVIEW and display unit can be to three kinds of different air leak real-time detection methods
It is analyzed, and selects suitable leak detection method according to different application and applicable elements.
Claims (5)
1. can be used for the experiment porch (01) of invasive ventilation gas leakage detection, including realizing lung ventilator function
Ventilator Control System, a gas leakage detection module (02) comprising flow, pressure sensor and data collecting card,
One micro-process based on LabVIEW and display unit (03), face shield and fixing device (04) thereof, simulation
Tracheae (05) and lung model (06), it is characterised in that described micro-process based on LabVIEW and display
Unit can realize the synchronous acquisition of multi channel signals, in real time display and process；Described gas leakage detection module (02)
Comprise multiple flow, pressure sensor and driving thereof, filter circuit, comprise a data collecting card, available
Gas circuit flow and pressure signal when detection and collection invasive ventilation；
For detection demand, flow, pressure sensor are positioned at following gas circuit characteristic point:
Characteristic point 1: gas leakage branch road stage casing, can detect Gas leak flow and pressure；
Characteristic point 2: inspiration limb stage casing and expiration branch road stage casing, can detect air-breathing and expiratory gas flow and pressure；
Characteristic point 3: at the gas circuit of face shield front end and close face shield and simulation tracheae stage casing, before can detecting face shield
End and the gas flow of face shield rear end and pressure；
Gas leakage detection module (02) is connected by three kinds of different gas circuit structures can realize three kinds of optional gas leakage
Real-time detection method.
The experiment porch (01) that can be used for invasive ventilation gas leakage detection the most according to claim 1, its
Being characterised by, face shield and fixing device (04) thereof are connected with lung model (06) through simulation tracheae (05),
Lung model (06) can use clamping plate lung or active lung, simulation tracheae (05) and lung model (06)
Human respiratory impedance, compliance are intended in molding.
The experiment porch (01) that can be used for invasive ventilation gas leakage detection the most according to claim 1, its
Be characterised by, described micro-process based on LabVIEW and display unit (03) by LabVIEW programming realization,
Can synchronous acquisition multichannel flow, pressure signal show in real time and preserve, the signal gathered can be carried out reality
Time filtering and numerical operation.
The experiment porch (01) that can be used for invasive ventilation gas leakage detection the most according to claim 3, its
Being characterised by, micro-process based on LabVIEW and display unit (03) can gather and show lung ventilator control
Flow that system is given and pressure signal, and the flow and the pressure signal that collect with sensor carry out score
Analysis, gathers the accuracy of signal for evaluation sensor.
The experiment porch (01) that can be used for invasive ventilation gas leakage detection the most according to claim 4, its
Being characterised by, micro-process based on LabVIEW and display unit (03) can be real-time to three kinds of different gas leakage
Detection method is analyzed, and selects suitably to leak gas detection according to different application and applicable elements
Method.
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| CN201410232944.1A CN103977493B (en) | 2014-05-29 | 2014-05-29 | Can be used for the experiment porch of invasive ventilation gas leakage detection |
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| CN103977493B true CN103977493B (en) | 2016-08-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN107019852B (en) * | 2017-03-14 | 2020-01-31 | 苏州大学 | Tracking device for simulating human lung tumor movement |
| CN108287043B (en) * | 2017-12-29 | 2020-03-10 | 湖南明康中锦医疗科技发展有限公司 | Breathing machine air leakage detection method and device, storage medium and computer equipment |
| CN110975090A (en) * | 2019-12-20 | 2020-04-10 | 广州和普乐健康科技有限公司 | Breathing machine air leakage calculation method and device, storage medium and computer equipment |
| CN111044237A (en) * | 2019-12-31 | 2020-04-21 | 湖南明康中锦医疗科技发展有限公司 | Self-checking system and method for water tank of respiratory support equipment |
| CN111110979A (en) * | 2019-12-31 | 2020-05-08 | 湖南明康中锦医疗科技发展有限公司 | Self-checking system and method for water tank of respiratory support equipment |
| CN111568424B (en) * | 2020-05-26 | 2023-09-26 | 江苏省肿瘤医院 | Device for synchronizing respiratory motion signals in radiotherapy and application method thereof |
| CN111658922A (en) * | 2020-06-04 | 2020-09-15 | 广东荧天生物技术有限公司 | Control method of pulse breathing module for breathing machine |
| CN111658921A (en) * | 2020-06-04 | 2020-09-15 | 广东荧天生物技术有限公司 | Detect breathing and multichannel air feed modular mechanism |
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