CN103115644A - Detection device for key performance parameters of simple respirator and detection method - Google Patents
Detection device for key performance parameters of simple respirator and detection method Download PDFInfo
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- CN103115644A CN103115644A CN2013100274219A CN201310027421A CN103115644A CN 103115644 A CN103115644 A CN 103115644A CN 2013100274219 A CN2013100274219 A CN 2013100274219A CN 201310027421 A CN201310027421 A CN 201310027421A CN 103115644 A CN103115644 A CN 103115644A
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Abstract
The invention relates to a detection device for key performance parameters of a simple respirator and a detection method. The device comprises a container, a leather bag, a tidal air scale, a pressure gauge, a flowmeter, an oxygen concentration analysis meter, a test connector, a valve and a connection pipeline. An expiration passage in the simple respirator takes 100% pure oxygen as a tracing gas, inflation is carried out on the leather bag arranged in the organic container by means of the simple respirator, and a dead space of the simple respirator is calculated through the tidal air volume and the oxygen concentration of the intake gas. Air in standard flow is input into a patient access of the simple respirator, pressure produced at the patient access of the simple respirator is recorded, and accordingly the respiratory resistance of the simple respirator can be detected. The detection device can be used for objectively evaluating performance differences of the simple respirator, is beneficial for standardization of detection of various simple respirators, facilitates reasonable purchase and right utilization of the simple respirator, and improves the rescue success rate.
Description
Technical field
The present invention relates to a kind of pick-up unit and detection method of bag respirator critical performance parameters, can be used for the detection of the critical performance parameters such as bag respirator dead space and respiratory impedance, belong to technical field of medical instruments.
Background technology
Bag respirator is also referred to as ball or breaker lug clinically, it is the simplest respirator by the apparatus pressurization, it carries with easy to use, has or not oxygen source all can ventilate immediately, is usually used in cardiopulmonary resuscitation, suction sputum and expiratory dyspnea patient's first aid is arranged and turn occasion such as medical treatment fortune etc.Along with the emergent enhancing of preparing of domestic medical institutions, the bag respirator kind is more and more.The gordian technique performance of bag respirator such as dead space (the interior patient of inspiratory phase is by the volume of the last breath of bag respirator suction next time), respiratory impedance, tidal volume and the isoparametric quality of pressure limitation, the directly success ratio of impact rescue.But up to now, for above-mentioned critical performance parameters, domesticly there is no unified examination criteria, also lack corresponding pick-up unit.Therefore, the employed detection method of each producer differs, especially the detection of dead space of respirator is a technological difficulties comparatively speaking, the bag respirator that has even do not have the detection of these parameters, therefore the performance of each bag respirator also just is not quite similar, and for the medical worker, understands the difference on these performances, help reasonable selective purchase and the correct bag respirator that uses, improve salvage success rate.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art with blank, a kind of pick-up unit and detection method of bag respirator critical performance parameters are provided, can carry out convenient and reliable detection to critical performance parameters such as bag respirator dead space and respiratory impedances, be conducive to the standardization that all kinds of bag respirators detect.
According to an aspect of the present invention, provide a kind of pick-up unit of bag respirator critical performance parameters, comprising: container, leather bag, moisture scale, tensimeter, flowmeter, oxygen concentration analyser, test splice and each valve and connecting tube.Wherein: leather bag is installed in the container, the compliance that injected water is used for regulating leather bag in the container.Container is connected with the moisture scale by connecting tube, and another outlet of moisture scale connects the first ball valve by vapour lock.Leather bag links to each other with the first retaining valve with the second ball valve respectively by the first three-way connection.Another outlet of the second ball valve connects the oxygen concentration analyser.Another outlet of the first retaining valve links to each other with the second retaining valve with the first female joint respectively by the second three-way connection.Another outlet of the second retaining valve links to each other with four-way connection by the 3rd ball valve.Other three branches of four-way connection connect respectively the 4th ball valve, tensimeter and the first reversal valve.The other end of the 4th ball valve then connects the second female joint.Source of oxygen is passed through the first needle-valve (adjustable needle valve) successively, the second reversal valve, and flowmeter, the 3rd reversal valve is finally by connect respectively the first ball valve and the first reversal valve by the 3rd three-way connection.Pressurized air links to each other with the 3rd reversal valve via the second needle-valve.The gas outlet of the second reversal valve links to each other with the gas outlet of the first reversal valve; Test splice links to each other with the first female joint.
According to a further aspect in the invention, provide a kind of method of testing of bag respirator critical performance parameters, adopt above-mentioned detection device to carry out the measurement of bag respirator dead space, exhalation impedance measurement and air-breathing impedance measurement.Exhalation path at bag respirator passes to 100% pure oxygen as tracer gas, utilizes bag respirator to the leather bag inflation that is installed in the container, calculates the dead space of bag respirator according to the oxygen concentration of tidal volume and suction gas.Air by to bag respirator patient interface input normal flow records the pressure that this air-flow produces in patient interface place correspondence, thereby records the respiratory impedance of bag respirator.
Preferably, the measurement of described bag respirator dead space is: the air that accesses 30l/min in the bypass of test splice, the right way of test splice is connected with leather bag with the pure oxygen of 5l/min respectively by three-way connection, utilizes finger to seal/open the test splice right way, inflates to leather bag.Observe simultaneously moisture scale and tensimeter, guarantee that the tidal volume of each ventilation is constant.Because can suck the pure oxygen of constant volume (being system's dead space) in the time of each air-breathing in the leather bag, so through several all after dates of ventilating, the oxygen concentration in the leather bag will greater than airborne oxygen concentration, just can be measured system's dead space of device accordingly.Unload test splice, the access bag respirator utilizes above-mentioned identical method, just can record the dead space V of bag respirator
D, appFor:
Here, V
D, system=system dead space; V
T=tidal volume; F
B02Oxygen concentration after=ventilation finishes in the leather bag; And the dead space V of system
D, systemCan be expressed as
Here F
B02(test connection)During for the system dead space of connecting test joint proving installation, the oxygen concentration after ventilation finishes in the leather bag.
Preferably, described bag respirator exhalation impedance measuring method is: the patient connection port is linked to each other with an air-source, use bag respirator for child, the adjusting air mass flow is 5l/min, use bag respirator for the adult, the adjusting air mass flow is 50l/min, is recorded in respectively the pressure that patient interface produces under this flow and is exhalation impedance.
Preferably, the air-breathing impedance measurement method of described bag respirator is: the patient connection port is linked to each other with an attractor, use bag respirator for child, regulating the attraction flow is 5l/min, use bag respirator for the adult, regulating the attraction flow is 50l/min, is recorded in respectively the pressure that patient interface produces under this regulation flow and is air-breathing impedance.
Compared with prior art, the present invention has following beneficial effect:
The present invention can carry out kinetic measurement to the bag respirator dead space, and the result can also record air-breathing impedance and exhalation impedance simultaneously accurately and reliably easily, helps reasonable selective purchase and the correct bag respirator that uses, and improves salvage success rate.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the embodiment of the invention 1 bag respirator critical performance parameters proving installation synoptic diagram;
Each figure number is respectively among the figure: 1. oxygen concentration analyser, 2. the second ball valve, 3. the first retaining valve, 4. the first female joint, 5. the second retaining valve, 6. the 3rd ball valve, 7. the second female joint, 8. the 4th ball valve, 9. tensimeter, 10. the first reversal valve, 11. first needle-valves, 12. the second reversal valve, 13. flowmeters, 14. the 3rd reversal valves, 15. the second needle-valve, 16. first ball valves, 17. vapour locks, 18. the moisture scale, 19. organic glass bottles, 20. latex leather bags.
Fig. 2 is the test splice structural representation;
Each figure number is respectively among the figure: the test splice right way 21, test splice bypass 22.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
As shown in Figure 1, a kind of pick-up unit of bag respirator critical performance parameters comprises: organic glass bottle 19, latex leather bag 20, moisture scale 18, tensimeter 9, flowmeter 13, oxygen concentration analyser 1, test splice and valve and connecting tube.
In the present embodiment, test splice as shown in Figure 2, described test splice is provided with the right way 21 and bypass 22, wherein the test splice right way is φ 10mm hole, bypass is φ 6mm hole.These parts are used for the measuring system dead space.
In the present embodiment, for ease of observing, container adopts organic glass bottle 19, in other embodiments, also can be other containers.
In the present embodiment, leather bag adopts latex leather bag 20, in other embodiments, also can be the leather bag of other resilient materials.
In the present embodiment, Φ 22mm female joint is adopted in described first, second female joint 4,7, and bag respirator to be tested links to each other with proving installation by these two joints, to carry out the test of relevant parameter.
In the present embodiment, valve comprises the first ball valve 16, the second ball valve 2, the 3rd ball valve 6, the 4th ball valve 8, the first retaining valve 3, the second retaining valve 5, the first reversal valve 10, the second reversal valve 12, the 3rd reversal valve 14, the first needle-valve 11, the second needle-valve 15.Wherein each ball valve is used for the switch air-flow, thereby guarantees independent measurement dead space, air-breathing impedance and three parameters of exhalation impedance, is independent of each other.Each needle-valve is used for adjusting gas flow, and each reversal valve is used for changing the direction of air-flow.
In the present embodiment, vapour lock 17 is common components, regulates water injection rate and vapour lock 17 in the organic glass bottle 19, can be used for simulating compliance and the resistance of Lungs of Children and adult's lung.
Present embodiment is specifically tested the critical performance parameters of above-described embodiment 1 described device for bag respirator as follows.
A. measuring bag respirator dead space step is:
1) closes oxygen concentration analyser 1 input port the second ball valve 2.
2) close the 4th ball valve 8, open the 3rd ball valve 6 and the first ball valve 16, connect bag respirator to the 20 interior inflations of latex leather bag, until latex leather bag 20 is adjacent to organic glass bottle 19 inwalls, be full of a bottle interior space fully.
3) close the 3rd ball valve 6, open oxygen concentration analyser 1 input port the second ball valve 2, open oxygen flowmeter 13, in organic glass bottle 19, be filled with 100% pure oxygen, when tensimeter 9 readings for or be approximately 1kPa (about 10cmH
2O) time, close oxygen flowmeter 13, close simultaneously the second ball valve 2.
4) unload bag respirator, connect as shown in Figure 2 22mm/15mm test splice, and be the air that bypass 22 provides flow as shown in table 1 to test splice 6mm by-pass port.
5) open the 3rd ball valve 6, wash away the breathing path with 100% pure oxygen.
6) sealing/open test splice 10mm opening with finger is the test splice right way 21, to 20 inflations of latex leather bag.By observing moisture scale 18 and tensimeter 9, guarantee that each ventilation tidal volume is constant.The ventilation number of cycles is provided by table 1.
7) close the 3rd ball valve 6, open the second ball valve 2, adjust 100% pure oxygen flow to about the 5l/min, record latex leather bag 20 interior oxygen concentration F
BO2When tensimeter 9 readings are shown as 1kPa (about 10cmH again
2O) time, close the second ball valve 2.
8) use two groups of different test parameters shown in the table 1, calculate the dead space V of system of proving installation
D, system
9) remove test splice, connect bag respirator, repeat above-mentioned steps 4)-8), the dead space of test bag respirator.
At last, the dead space V of bag respirator
D, appFor:
Here, V
D, system=system dead space; V
T=tidal volume; F
B02Oxygen concentration after=ventilation finishes in the latex leather bag 20;
And the dead space V of system
D, systemCan be expressed as
Here F
B02(test connection)During for the system dead space of connecting test joint proving installation, the oxygen concentration after ventilation finishes in the latex leather bag 20.
B. the testing procedure of exhalation impedance is:
1) closes the 3rd ball valve 6 and the first ball valve 16, open the 4th ball valve 8, the bag respirator patient interface is connected to Φ 22mm the second female joint 4.
2) connect the air-source (children's is 5l/min with the bag respirator flow) of a flow 50l/min at the first needle-valve 11 entrances, be recorded in the pressure that the patient interface place produces, be exhalation impedance.
C. the step of air-breathing testing impedance is:
1) closes the 3rd ball valve 6, the first needle-valve 11 and the first ball valve 16, open the 4th ball valve 8, switch simultaneously the first reversal valve 10, the second reversal valve 12 and the 3rd reversal valve 14 make the second needle-valve 15, the 3rd reversal valve 14, flowmeter 13, the second reversal valve 12, the first reversal valve 10, the 4th ball valve 8 and Φ 22mm the second female joint 4 consist of a gas passage.The bag respirator patient interface is connected to Φ 22mm the second female joint 4.
2) connect an attractor at the second needle-valve 15 entrances, attracting flow is that children's 50l/min(is 5l/min with the bag respirator flow), be recorded in the pressure that the patient interface place produces, be air-breathing impedance.
Table 1 bag respirator dead space location parameter
Can find out from above-described embodiment, adopt apparatus of the present invention, exhalation path at bag respirator passes to 100% pure oxygen as tracer gas, utilize bag respirator to the latex leather bag inflation that is installed in the organic glass bottle, calculate the dead space of bag respirator according to the oxygen concentration of tidal volume and suction gas.Air by to bag respirator patient interface input normal flow is recorded in the pressure that patient interface place correspondence produces, and can record the respiratory impedance of bag respirator.The present invention can be used for objective evaluation bag respirator performance difference, is conducive to the standardization that all kinds of bag respirators detect, and is conducive to reasonable selective purchase and the correct bag respirator that uses, and improves salvage success rate.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. the pick-up unit of a bag respirator critical performance parameters is characterized in that described device comprises: comprising: container, leather bag, moisture scale, tensimeter, flowmeter, oxygen concentration analyser, test splice and each valve and connecting tube; Wherein: leather bag is installed in the container, and container is connected with the moisture scale by connecting tube, and another outlet of moisture scale connects the first ball valve by vapour lock; Leather bag links to each other with the first retaining valve with the second ball valve respectively by the first three-way connection, and another outlet of the second ball valve connects the oxygen concentration analyser; Another outlet of the first retaining valve links to each other with the second retaining valve with the first female joint respectively by the second three-way connection; Another outlet of the second retaining valve links to each other with four-way connection by the 3rd ball valve, and other three branches of four-way connection connect respectively the 4th ball valve, tensimeter and the first reversal valve, and the other end of the 4th ball valve then connects the second female joint; Source of oxygen is successively by the first needle-valve, the second reversal valve, flowmeter and the 3rd reversal valve, finally by connect respectively the first ball valve and the first reversal valve by the 3rd three-way connection; Pressurized air links to each other with the 3rd reversal valve via the second needle-valve; The gas outlet of the second reversal valve links to each other with the gas outlet of the first reversal valve; Test splice links to each other with the first female joint.
2. the pick-up unit of bag respirator critical performance parameters according to claim 1 is characterized in that the compliance that injected water is used for regulating leather bag in the described container.
3. the pick-up unit of bag respirator critical performance parameters according to claim 1 is characterized in that described test splice is provided with the right way and bypass.
4. a method of utilizing each described device of claim 1-3 to carry out the test of bag respirator critical performance parameters is characterized in that described critical performance parameters test comprises that the bag respirator dead space is measured, exhalation impedance is measured and air-breathing impedance measurement; Exhalation path at bag respirator passes to 100% pure oxygen as tracer gas, utilizes bag respirator to the leather bag inflation that is installed in the container, calculates the dead space of bag respirator according to the oxygen concentration of tidal volume and suction gas; Air by to bag respirator patient interface input normal flow records the pressure that this air-flow produces in patient interface place correspondence, thereby records the respiratory impedance of bag respirator.
5. the method for bag respirator critical performance parameters test according to claim 4 is characterized in that, described bag respirator dead space is measured, and is specially:
At the air of the bypass of test splice access 30l/min, the right way of test splice is connected with leather bag with the pure oxygen of 5l/min respectively by three-way connection, utilizes finger to seal/open the test splice right way, inflates to leather bag; Observe simultaneously moisture scale and tensimeter, guarantee that the tidal volume of each ventilation is constant; Through several all after dates of ventilating, the oxygen concentration in the leather bag will greater than airborne oxygen concentration, be measured system's dead space of device accordingly;
Unload test splice, the access bag respirator utilizes above-mentioned identical method, records the dead space V of bag respirator
D, appFor:
Here, V
D, system=system dead space; V
T=tidal volume; F
B02Oxygen concentration after=ventilation finishes in the leather bag; And the dead space V of system
D, systemBe expressed as
Here F
B02(test connection)During for the system dead space of connecting test joint proving installation, the oxygen concentration after ventilation finishes in the leather bag.
6. the method for bag respirator critical performance parameters test according to claim 4 is characterized in that, described bag respirator dead space is measured, and concrete testing procedure is as follows:
1) closes oxygen concentration analyser input port the second ball valve;
2) close the 4th ball valve, open the 3rd ball valve and the first ball valve, connect bag respirator and in leather bag, inflate, until leather bag is adjacent to container inner wall, be full of space in the container fully;
3) close the 3rd ball valve, open oxygen concentration analyser input port the second ball valve, open oxygen flowmeter, in container, be filled with 100% pure oxygen, when pressure gauge reading is 1kPa, close oxygen flowmeter, close simultaneously the second ball valve;
4) unload bag respirator, the connecting test joint, and the air of setting flow is provided to the bypass of test splice;
5) open the 3rd ball valve, wash away the breathing path with 100% pure oxygen;
The right way of 6) sealing/opening test splice with finger is inflated to leather bag; By observing moisture scale and tensimeter, guarantee that each ventilation tidal volume is constant;
7) close the 3rd ball valve, open the second ball valve, adjust 100% pure oxygen flow to about the 5l/min, oxygen concentration F in the record leather bag
BO2When pressure gauge reading is shown as 1kPa again, close the second ball valve;
8) use different test parameters, calculate system's dead space of proving installation;
Remove test splice, connect bag respirator, repeat above-mentioned steps 4)-8), the dead space of test bag respirator.
7. the method for bag respirator critical performance parameters according to claim 4 test is characterized in that the testing procedure of described bag respirator exhalation impedance is:
1) closes the 3rd ball valve and the first ball valve, open the 4th ball valve, the bag respirator patient interface is connected to the second female joint;
2) connect the air-source of a flow 50l/min at the first needle-valve entrance, children's is 5l/min with the bag respirator flow, is recorded in the pressure that the patient interface place produces, and is exhalation impedance.
8. the method for bag respirator critical performance parameters according to claim 4 test is characterized in that the step of the air-breathing testing impedance of described bag respirator is:
1) closes the 3rd ball valve, the first needle-valve and the first ball valve, open the 4th ball valve, switch simultaneously the first reversal valve, the second reversal valve and the 3rd reversal valve, make the second needle-valve, the 3rd reversal valve, flowmeter, the second reversal valve, the first reversal valve, the 4th ball valve and the second female joint consist of a gas passage, the bag respirator patient interface is connected to the second female joint;
2) connect an attractor at the second needle-valve entrance, the attraction flow is 50l/min, and children's is 5l/min with the bag respirator flow, is recorded in the pressure that the patient interface place produces, and is air-breathing impedance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310027421.9A CN103115644B (en) | 2013-01-24 | 2013-01-24 | The pick-up unit of bag respirator critical performance parameters and detection method |
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|---|---|---|---|
| CN201310027421.9A CN103115644B (en) | 2013-01-24 | 2013-01-24 | The pick-up unit of bag respirator critical performance parameters and detection method |
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| CN103115644B CN103115644B (en) | 2015-10-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880220A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Test system used for breathing products |
| CN111578981A (en) * | 2019-02-19 | 2020-08-25 | 林雷 | Wall type oxygen inhalator and negative pressure aspirator detection device |
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| CN87214169U (en) * | 1987-10-07 | 1988-05-04 | 中国人民解放军第一二三医院 | Multifunctional anaesthetic apparatus |
| JP2000126297A (en) * | 1998-10-27 | 2000-05-09 | Siemens Elema Ab | Anesthetizer |
| CN201126370Y (en) * | 2007-12-17 | 2008-10-01 | 江苏凯泰医疗设备有限公司 | Device for detecting narcosis gas output quantity |
| CN102114291A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Control mechanism and method of tidal volume |
| CN202366351U (en) * | 2011-12-12 | 2012-08-08 | 中国安全生产科学研究院 | Respiratory resistance and airtightness detection device for respiratory protection articles |
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| US3957047A (en) * | 1974-02-08 | 1976-05-18 | Dragerwerk Aktiengesellschaft | Respiration-time control device in respirators for infants |
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| JP2000126297A (en) * | 1998-10-27 | 2000-05-09 | Siemens Elema Ab | Anesthetizer |
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| CN111578981A (en) * | 2019-02-19 | 2020-08-25 | 林雷 | Wall type oxygen inhalator and negative pressure aspirator detection device |
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|---|---|
| CN103115644B (en) | 2015-10-14 |
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