CN206837209U - A kind of lung ventilator - Google Patents
A kind of lung ventilator Download PDFInfo
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- CN206837209U CN206837209U CN201621265192.XU CN201621265192U CN206837209U CN 206837209 U CN206837209 U CN 206837209U CN 201621265192 U CN201621265192 U CN 201621265192U CN 206837209 U CN206837209 U CN 206837209U
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- valve
- lung ventilator
- patient
- pressure source
- expectoration
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Abstract
The utility model provides a kind of lung ventilator, including：Suction line, it which is provided with and provide the positive pressure source of malleation, surge tank, 2/2-way saccule valve for patient, the 2/2-way saccule valve passes through an air pump and first two-position three-way valve carries out break-make switching control；Expiration pipeline, which is provided with outlet valve, and the outlet valve is controlled it by second two-position three-way valve by receiving the compressed gas of the pre-set constant pressure from surge tank；Expectoration pipeline, it which is provided with and provide the negative pressure source of negative pressure and the fast gate valve being serially connected between negative pressure source and patient for patient.Also include：Central processing unit, the data of the sensor detection in lung ventilator carry out Collaborative Control to lung ventilator each several part.The lung ventilator allows expectoration machine to be embedded in as module in lung ventilator, has higher accuracy, response and security.Using same central processing unit, system composition is simplified, and the breathing of lung ventilator and expectoration work has been reached real synchronization.
Description
Technical field
It the utility model is related to medical instruments field, more particularly to a kind of lung ventilator with expectoration function.
Background technology
For the patient for having used lung ventilator upper, after particularly establishing artificial airway, cough reflex weakens, or because of lung
Function slump of disastrous proportions, breathing myasthenia etc., mostly can not autonomous expectoration, easily cause that secretion is detained and blocking air flue makes lung
Infection aggravates.Therefore, the patient to mechanical ventilation is, it is necessary to periodically carry out artificial expectoration processing.At present, what is clinically commonly used is to adopt
With sputum aspirator tube suction sputum, but the suction sputum mode of this intrusive mood of sputum aspirator tube suction sputum, because the negative pressure of part is very high, plus conduit
Insertion and mobile, it is easy to air flue is damaged or air flue scar, meanwhile, the mechanical ventilation of patient can be interrupted, in addition sputum
Removing nor very thorough.
Patent WO2007054829 proposes a kind of and lung ventilator and worked together first, auxiliary patient respiration, cough, removes
The expectoration system of patient airway secretion, the eupnea of patient need not be interrupted during patient's expectoration, can be according to default expectoration
Time and expectoration number carry out expectoration to patient, can at any time, instant expectoration.
Patent CN 201510657436.2 then further enriches the patent, improves the security of the expectoration system, faces
Bed adaptability, when avoiding the work of expectoration machine the problems such as the alarm of lung ventilator, the phlegm of expectoration machine expectoration is collected into a collection
In phlegm container, then the central negative pressure attraction system periodically configured by nurse by hospital siphons away sputum.
In two patents listed above, the triggering expectoration of expectoration machine is come by the pressure in system or flow sensor
Judge that lung ventilator implements the process of mechanical ventilation to patient, that is to say, that lung ventilator and expectoration machine do not communicate, expectoration machine
Simply passively by detecting the pressure signal of lung ventilator gas circuit, then handled, analyze to obtain the information of breathing process, but this
Following 3 problems would generally be brought：
1st, accuracy and response quickly of system：It is two different machines after all, it is impossible to accomplish that lung ventilator works with expectoration machine
Precise synchronization.The breathing process pressure signal for detecting lung ventilator in the pressure or flow sensor of expectoration system is converted into electricity
After signal, this signal will be by transmitting, amplify, filter, after A/D conversions, then transfers to message handler to handle, and judges, sends
Instruction, then drivable DC voltage, drive valve or blower fan work by D/A conversions, power amplification again.This can controlled
There is a certain degree of time lag in system, influence expectoration effect.
2nd, security：Various environmental conditions are limited by, the result of mistake may be brought by breathing the detection of process, easily be made
Into erroneous judgement, breathing pipeline interior condition is very complicated, the water of gaseous vapor and liquid, or even the phlegm of patient's expectoration, and having can
Each corner of breathing pipeline can be distributed in, these factors can directly affect the essence of pressure or the testing result of flow sensor
Degree, even wrong result.So as to cause potential safety hazard.
3rd, pipeline connection is complicated, and space-consuming volume is big, and cost height, trouble point, leakage point are more.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of lung ventilator, the lung ventilator has higher accuracy, sound
Answering property and security.
A kind of lung ventilator, including：Suction line, which is provided with for patient provide the positive pressure source of malleation, surge tank, two two
Logical saccule valve, the 2/2-way saccule valve carry out break-make switching control by an air pump and first two-position three-way valve；
Expiration pipeline, outlet valve is which is provided with, the outlet valve is by second two-position three-way valve by receiving from the pre- of surge tank
If the compressed gas of constant pressure controls it；Expectoration pipeline, which is provided with for patient provide negative pressure negative pressure source and
The fast gate valve being serially connected between negative pressure source and patient.
Lung ventilator of the present utility model, its advantage are, expectoration machine is embedded in as module in lung ventilator,
Thus make lung ventilator that there is higher accuracy, response and security.
Using same central processing unit control air-breathing, expiration and expectoration, system composition, and same central processing are simplified
Device carries out Collaborative Control to each several part, and the breathing and expectoration work for making lung ventilator have reached real synchronization.
Same central processing unit can be carried out at integration to the information received from multiple parts such as sensor, valve and blower fan
Reason, reduces time lag, improves the accuracy and fast-response of system, improve expectoration effect to a certain extent.
Brief description of the drawings
Fig. 1 is a kind of gas circuit structure block diagram of embodiment of the present utility model.
Embodiment
Embodiment of the present utility model, wherein identical part identical reference table are described with reference to the accompanying drawings
Show.
Fig. 1 is a kind of gas circuit structure block diagram of embodiment of lung ventilator of the present utility model.
Lung ventilator of the present utility model includes suction line, expiration pipeline, expectoration pipeline and patient end pipeline；
Suction line include be sequentially connected air-in, air cleaner, empty oxygen blending tank, the first turbofan,
First pressure sensor, surge tank, 2/2-way saccule valve.Suction line also has an oxygen input port, is directly mixed with empty oxygen
Close tank connection.First turbofan is in parallel with a suction control valve (proportional pressure valve or proportional directional valve), with
The output pressure and flow of first turbofan are adjusted.2/2-way saccule valve passes through an air pump and one two three
Port valve carries out break-make switching control, and then controls being switched in or out for suction line.The two-position three-way valve can be two-bit triplet
Magnetic valve.
Expiration pipeline includes outlet valve, and outlet valve is by a two-position three-way valve by receiving the pre-set constant from surge tank
The compressed gas of pressure controls it, and then controls being switched in or out for expiration pipeline.The two-position three-way valve can be two
Position-3-way solenoid valve.
Expectoration pipeline includes fast gate valve, second pressure sensor, the second turbine wind being sequentially connected by being input to output end
Machine.Fast gate valve control expectoration pipeline is switched in or out.
Patient end pipeline is sequentially connected oxygen concentration sensor, flow sensor by input to output end, its output end
It is connected with patient.
The input port of the delivery outlet of suction line and expiration pipeline, expectoration pipeline pools together, and connects with patient end pipeline
Connect.Expiration pipeline is pooled together with expectoration pipeline delivery outlet and is connected with silencer, and patient's exhalation or the second turbofan are taken out
The air-flow gone out is eliminated the noise.
Its course of work is as follows：When the utility model lung ventilator is supplied gas to patient (i.e. during patient's air-breathing), surrounding environment
Air enter empty oxygen blending tank 102 via filter 101, empty oxygen blending tank 102 is configured with oxygen input port, low pressure or height
Oxygen of the pressure through decompression, Flow-rate adjustment enters empty oxygen blending tank 102 (due to belonging to routine techniques, this practicality by oxygen input port
It is new to be not shown), in empty oxygen blending tank 102, air and the oxygen mix Jing Guo Flow-rate adjustment, it is dense to reach default gas
Degree.Oxygen concentration sensor 110 detects to the gas concentration for being conveyed to patient at any time, and data feedback is new to this practicality
The central processing unit of type lung ventilator, oxygen input quantity is adjusted, to carry out closed-loop control to oxygen concentration.It is mixed to reach setting
The gas of concentration enters the input port of the first turbofan 104, and the first turbofan 104 pressurizes to the gas of input, defeated
Go out the mixed gas of certain flow and pressure, pressure sensor 106, flow sensor 111 are responsible for exporting the first turbofan
Gas carry out pressure and flow detection, and the pressure after detection, data on flows are transferred in the utility model lung ventilator
Central processor system, central processing unit system are contrasted with expected pressure data according to the pressure, the data on flows that detect, passed through
Control the rotating speed of the first turbofan 104 and opening for suction control valve 103 (proportional pressure valve or proportional directional valve)
Degree, jointly controls gas pressure and flow that the first turbofan 104 is conveyed to patient 112.The effect of surge tank 107 is to provide
The gas of one constant pressure makes outlet valve 116 be closed in air-breathing, and PEEP controls are carried out to expiratory airflow when exhaling.
The mixed gas of first turbofan 104 output continues through surge tank 107,2/2-way saccule valve 113, oxygen
Concentration sensor 110, flow sensor 111, into the intrapulmonary of patient 112, complete breathing process.
Now, 2/2-way saccule valve 113 is to turn on, and pump 108 does not start, and two-position three-way valve 109 is maintained at such as figure
Gas circuit position, the control chamber of saccule valve 113 communicate with air.
And now, outlet valve 116 is to close, and a part of compressed gas that surge tank 107 exports passes through two-bit triplet electricity
Magnet valve 105, into outlet valve 116, because the gas pressure for now entering outlet valve 116 is larger, therefore, outlet valve 116 is closed
Close.
The expectoration pipeline in parallel with suction line is also now to be blocked by fast gate valve 114.
When giving conveying patient depressed beam, expiration state is transferred to, if PEEP regulations need not be carried out, now, the first turbine wind
Machine 104 is dallied or shut down.Air pump 108 starts, and two-position three-way valve 109 must be electric, and position is switched to left position, the pressure that air pump 108 exports
Contracting gas passes through two-position three-way valve 109, into 2/2-way saccule valve 113, closes the saccule valve, cuts off suction line.With
This simultaneously, two-bit triplet magnetic valve 105 it is electric, be switched to right position, the control section of outlet valve 116 communicates with air, causes to exhale
Valve 116 is connected, and the gas of patient's intrapulmonary is by flow sensor 111, oxygen concentration sensor 110, outlet valve 116, silencer
118 are discharged in air, complete exhalation process.
When giving conveying patient depressed beam, expiration state is transferred to, if necessary to carry out PEEP regulations, air pump 108 starts, two three
Port valve 109 must be electric, and position is switched to left position, and the compressed gas that air pump 108 exports passes through two-position three-way valve 109, into two two
Logical saccule valve 113, closes saccule valve, cuts off suction line.Meanwhile the gas of patient's intrapulmonary is by flow sensor 111, oxygen
Gas concentration sensor 110, outlet valve 116, silencer 118, flow to air.Also at the same time, the first turbofan 104, which reduces, turns
Speed and output pressure is jointly controlled by suction control valve (proportional pressure valve 103 or proportional pressure control valve), and pass through the first pressure
The pressure of the detection output of force snesor 106 simultaneously sends the PEEP value phases that central processing unit carries out closed-loop control, output and setting to
(this value is equally likely to PEEP values to the constant pressure of pass, it is also possible to because the structural factor of outlet valve, and default PEEP values have
Proportional characteristic) gas, the gas passes through two-bit triplet magnetic valve 105, into the control chamber of outlet valve 116, to flowing to air
Exhaled air flow carries out peep controls.In the process, two-bit triplet magnetic valve 105 is maintained at left position, can access and comes from the first whirlpool
Take turns blower fan 104 gas, but the gas pressure less than initial breath pressure thus at the control, outlet valve 116 is opened, and is exhaled
Air pipe is unimpeded, and the expiratory airflow of patient can pass through, and breath pressure gradually reduces, until reaching flat with PEEP control pressures
Weighing apparatus, expiration terminate, and outlet valve is closed.
When, it is necessary to during expectoration, starting the second turbofan 117 first, in fast gate valve 114 and second to the depressed beam of conveying patient
Default expectoration negative pressure is produced between turbofan 117.During the negative pressure is detected and fed back to by second pressure sensor 115
Central processor, and then, once central processing unit receives the information of air-breathing completion, air pump 108 starts, two-position three-way valve 109
Must be electric, position is switched to left position, and the compressed gas that air pump 108 exports passes through two-position three-way valve 109, into 2/2-way saccule valve
113, saccule valve is closed, cuts off suction line.First turbofan 104 continues to run with and by suction control valve (ratio
Pressure valve 103 or proportional pressure control valve) jointly control output pressure, and the pressure of output is detected by first pressure sensor 106
And send central processing unit to and carry out closed-loop control, (this pressure should be far longer than foregoing control PEEP to the constant pressure of output
Pressure value, to ensure that outlet valve 116 is closed) gas passes through two-bit triplet magnetic valve 105, into the control chamber of outlet valve 116, close
Close outlet valve 116.At the same time, central processing unit controls fast gate valve 114 to open, negative pressure caused by the second turbofan 117 with
The intrapulmonary barotropic gas of patient forms very high pressure differential, the gas therefore quick outflow of patient's intrapulmonary, by flow sensor
111st, oxygen concentration sensor 110, fast gate valve 114, pressure sensor 115, the second turbofan 117, silencer 118, are discharged to
In air, an expectoration process is completed.
Embodiment described above, simply the utility model more preferably embodiment, those skilled in the art
The usual variations and alternatives carried out in the range of technical solutions of the utility model should all be included in the scope of protection of the utility model
It is interior.
Claims (8)
- A kind of 1. lung ventilator, it is characterised in that including：Suction line, it which is provided with and provide the positive pressure source of malleation, surge tank, 2/2-way saccule valve for patient, described two two Logical saccule valve carries out break-make switching control by an air pump and first two-position three-way valve；Expiration pipeline, which is provided with outlet valve, and the outlet valve comes from surge tank by second two-position three-way valve by receiving The compressed gas of pre-set constant pressure control it；Expectoration pipeline, it which is provided with and provide the negative pressure source of negative pressure and the shutter being serially connected between negative pressure source and patient for patient Valve,Wherein, first two-position three-way valve, the second two-position three-way valve are two-bit triplet magnetic valve.
- 2. lung ventilator according to claim 1, it is characterised in that also include：Central processing unit, the data of the sensor detection in lung ventilator carry out Collaborative Control to lung ventilator each several part.
- 3. lung ventilator according to claim 2, it is characterised in that the sensor in the lung ventilator includes：First pressure sensor, it is arranged in suction line between positive pressure source and patient；Oxygen concentration sensor, it is arranged in suction line between positive pressure source and patient；Flow sensor, it is arranged in suction line between positive pressure source and patient；Second pressure sensor, it is arranged in expectoration pipeline between negative pressure source and patient,The sensor is connected with the central processing unit.
- 4. lung ventilator according to claim 2, it is characterised in that the positive pressure source is the first turbofan, the first turbine Blower fan is in parallel with a suction control valve.
- 5. lung ventilator according to claim 4, it is characterised in that the suction control valve is proportional pressure valve or ratio Example flow control valve.
- 6. lung ventilator according to claim 2, it is characterised in that the negative pressure source is the second turbofan.
- 7. lung ventilator according to claim 4, it is characterised in that the suction line has also included oxygen blending tank, its Output enters the input port of first turbofan.
- 8. lung ventilator according to claim 3, it is characterised in that also including patient end pipeline, the oxygen is set thereon Concentration sensor, flow sensor, the output end of patient end pipeline are connected with patient, the delivery outlet and exhaust tube of suction line Road, the input port of expectoration pipeline pool together, and are connected with patient end pipeline, and expiration pipeline collects in expectoration pipeline delivery outlet It is connected together with silencer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265192.XU CN206837209U (en) | 2016-11-11 | 2016-11-11 | A kind of lung ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265192.XU CN206837209U (en) | 2016-11-11 | 2016-11-11 | A kind of lung ventilator |
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| Publication Number | Publication Date |
|---|---|
| CN206837209U true CN206837209U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621265192.XU Active CN206837209U (en) | 2016-11-11 | 2016-11-11 | A kind of lung ventilator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492321A (en) * | 2016-11-11 | 2017-03-15 | 濡新（北京）科技发展有限公司 | A kind of lung ventilator |
| CN109612763A (en) * | 2019-01-16 | 2019-04-12 | 中铁第四勘察设计院集团有限公司 | The clamping mechanism of tunnel protection door and pressure decay test device comprising the clamping mechanism |
| CN109668709A (en) * | 2019-01-16 | 2019-04-23 | 中铁第四勘察设计院集团有限公司 | A kind of pressure decay test system suitable for tunnel protection door |
| WO2021223154A1 (en) * | 2020-05-07 | 2021-11-11 | 雷激 | Ventilator |
| WO2021248721A1 (en) * | 2020-06-12 | 2021-12-16 | 江苏鱼跃医疗设备股份有限公司 | Oxygen mixing system |
| CN117504076A (en) * | 2023-11-30 | 2024-02-06 | 广州蓝仕威克医疗科技有限公司 | Harmonic control positive and negative pressure ventilation high-frequency respiration control system, method and respirator |
-
2016
- 2016-11-11 CN CN201621265192.XU patent/CN206837209U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492321A (en) * | 2016-11-11 | 2017-03-15 | 濡新（北京）科技发展有限公司 | A kind of lung ventilator |
| CN106492321B (en) * | 2016-11-11 | 2019-01-25 | 濡新（北京）科技发展有限公司 | A kind of ventilator |
| CN109612763A (en) * | 2019-01-16 | 2019-04-12 | 中铁第四勘察设计院集团有限公司 | The clamping mechanism of tunnel protection door and pressure decay test device comprising the clamping mechanism |
| CN109668709A (en) * | 2019-01-16 | 2019-04-23 | 中铁第四勘察设计院集团有限公司 | A kind of pressure decay test system suitable for tunnel protection door |
| WO2021223154A1 (en) * | 2020-05-07 | 2021-11-11 | 雷激 | Ventilator |
| WO2021248721A1 (en) * | 2020-06-12 | 2021-12-16 | 江苏鱼跃医疗设备股份有限公司 | Oxygen mixing system |
| CN117504076A (en) * | 2023-11-30 | 2024-02-06 | 广州蓝仕威克医疗科技有限公司 | Harmonic control positive and negative pressure ventilation high-frequency respiration control system, method and respirator |
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