CN114392451B - Respiratory mask for preventing cross infection of respiratory infectious disease patient - Google Patents
Respiratory mask for preventing cross infection of respiratory infectious disease patient Download PDFInfo
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- CN114392451B CN114392451B CN202210213825.6A CN202210213825A CN114392451B CN 114392451 B CN114392451 B CN 114392451B CN 202210213825 A CN202210213825 A CN 202210213825A CN 114392451 B CN114392451 B CN 114392451B
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- 230000000241 respiratory effect Effects 0.000 title claims abstract description 24
- 206010011409 Cross infection Diseases 0.000 title claims abstract description 13
- 206010029803 Nosocomial infection Diseases 0.000 title claims abstract description 13
- 208000035473 Communicable disease Diseases 0.000 title abstract description 7
- 208000015181 infectious disease Diseases 0.000 title abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 36
- 206010011224 Cough Diseases 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000003570 air Substances 0.000 claims description 59
- 238000004659 sterilization and disinfection Methods 0.000 claims description 36
- 239000000645 desinfectant Substances 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 208000037534 Progressive hemifacial atrophy Diseases 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012017 passive hemagglutination assay Methods 0.000 claims description 3
- 244000052769 pathogen Species 0.000 claims description 3
- 229920000903 polyhydroxyalkanoate Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000013022 venting Methods 0.000 claims description 2
- 230000001717 pathogenic effect Effects 0.000 abstract 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 8
- 208000019693 Lung disease Diseases 0.000 description 4
- 244000052616 bacterial pathogen Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 206010036790 Productive cough Diseases 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Emergency Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Epidemiology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to a respiratory mask for preventing respiratory infectious disease patients from cross infection, which comprises a mask body, an inhalation one-way valve, an exhalation one-way valve, an exhaust liquid spraying device and a flexible air storage bag, wherein the respiratory mask can ensure that the inhalation resistance is small when the patients breathe normally, the exhaled pathogenic air is discharged to the environment after being filtered, and the respiratory mask can be used for rapidly exhausting the respiratory infectious disease patients during cough, so that the gas leakage caused by the instant impact force generated by the cough is avoided, and the cross infection of the patients in the closed environment can be avoided.
Description
Technical Field
The invention belongs to the field of medical equipment, and particularly relates to a respiratory mask for preventing cross infection of respiratory infectious disease patients.
Background
In the respiratory ward, patients with infectious diseases are often present. These diseases include tuberculosis, respiratory tract virus infection, various pneumonia, etc. The common characteristics of these patients are that exhaled air is more germ-bearing, has a degree of infectivity, and these patients are often accompanied by symptoms such as coughing.
In the prior art, the breathing mask can adopt a closed design to effectively filter germs. For example, using a respiratory mask of the N95 specification. However, this causes respiratory disorders, which aggravate the dyspnea symptoms of patients with pulmonary disease.
For this reason, it has been proposed in the prior art to provide a one-way valve on the breathing mask, which opens when breathing out gas, thereby relieving the breathing pressure. However, this allows the bacteria to be exhaled directly into the ward environment where they can cause cross-contamination between the patient or patient and medical personnel, whether breathing or touching the patient for a prolonged period of time.
In the prior art, a sterilizing device is also used for treating the expired air, but the severe cough of a patient suffering from the lung disease can cause the mask to generate gaps between the face due to the fact that the mask is not exhausted, so that the air with germs is exhausted from the gaps to the environment, and environmental pollution and cross infection are caused.
For this reason, there is an urgent need for a respiratory mask that can avoid cross-infection and is suitable for patients with severe cough.
Disclosure of Invention
To solve one or more of the above technical problems, it is proposed that:
a respiratory mask for preventing respiratory infectious disease patients from cross infection comprises a mask body, an inhalation one-way valve, an exhalation one-way valve, an exhaust liquid spraying device and a flexible air storage bag;
the mask body is provided with an inhalation one-way valve which is used for opening the valve body when a patient inhales and closing the valve body when the patient exhales;
the mask body is provided with an expiration one-way valve which is connected with the rigid part of the gas storage bag; the expiration check valve comprises a valve plate, an outer clamping plate and an inner clamping plate; the valve plate is rotatably arranged inside the valve body shell and is clamped in a clamping groove formed by the outer clamping plate and the inner clamping plate; wherein the outer clamping plate is lower than the inner clamping plate, the outer clamping plate is flexible, and the inner clamping plate is rigid;
the rigid part of the air storage bag is provided with an exhaust liquid spraying device, and the exhaust liquid spraying device comprises a pump, an extraction opening, a liquid spraying opening and a disinfection cavity; the pump is used for pumping out the gas in the gas storage bag through the pumping hole, discharging the gas into the disinfection cavity for treatment, and discharging the gas into the environment after no bacteria exist; meanwhile, the pump can also suck external clean air, mix disinfectant and then spray disinfectant mist from the liquid spraying port, on one hand, disinfect the air storage bag, on the other hand, increase the pressure of the air storage bag, so that the expiration check valve is reset and closed;
when a patient coughs severely, the air flow impacts the valve plate to enable the valve plate to rotate outwards, when the air flow is large, the valve plate impacts the outer clamping plate to enable the outer clamping plate to bend, so that the valve plate swings out of the clamping groove, the one-way valve is opened, and the gas from the cough is discharged into the gas storage bag through the one-way valve; after the cough is finished, the exhaust liquid spraying device sprays disinfection fog into the air storage bag, the impact force of the disinfection fog enables the valve plate to rotate inwards, the valve plate can strike the outer clamping plate to enable the valve plate to bend, and therefore the valve plate enters the clamping groove.
After disinfection, when the exhaust liquid spraying device pumps air from the air storage bag, the pumping force is reduced by using smaller pump power, and the valve plate is tightly contacted with the inner side clamping plate, so that the one-way valve is closed.
The gas storage bag comprises a rigid part and a flexible part, wherein the flexible part is made of PP, PLA, PHAs, PBA, PBS materials.
The mask body is composed of a material capable of filtering pathogens.
The mask body is connected with a binding belt.
A chemical disinfectant or an ultraviolet disinfection device is arranged in the disinfection cavity.
A method of venting a respiratory mask as described above to prevent cross-infection in a respiratory patient.
Under the condition that a patient breathes normally, when the patient inhales, the inhalation one-way valve is opened, and ambient gas enters the mask body through the inhalation one-way valve and is inhaled by the patient; when the patient exhales, the inspiration one-way valve is closed, the expiration one-way valve is closed, and the expired air enters the environment through the filter medium of the mask body.
When a patient coughs, due to the fact that impact force of cough gas is large, the gas impacts the valve plate of the expiration check valve, the flexible outer side clamping plate is pressed to be outwards bent, finally the valve plate is separated from the clamping groove and outwards rotates, the expiration check valve is opened, and the gas from the cough enters the gas storage bag through the expiration check valve and is rapidly filled in the gas storage bag.
When the cough is finished, firstly, the pump of the exhaust liquid spraying device pumps ambient air, and atomizes the disinfectant, so that the disinfectant mist is instantaneously sprayed into the gas storage bag; and the valve plate of the one-way valve for expiration rapidly rotates inwards due to the sudden impact force of the disinfection fog, and presses the flexible outer side clamping plate to bend inwards, and finally, the valve plate is fixed in the clamping groove due to the blocking of the rigid inner side clamping plate. And secondly, the pump of the exhaust liquid spraying device slowly pumps out the gas in the gas storage bag through the pumping hole, sends the gas to the disinfection cavity for disinfection, and discharges the gas to the environment after the disinfection is finished. At the moment, because the air suction impact force is smaller, the valve plate of the one-way valve cannot swing out of the clamping groove, and therefore the one-way valve is closed.
The invention has the following technical effects:
1. the respiratory mask capable of containing gas generated by cough of a patient suffering from the lung disease is firstly proposed, so that the mask is prevented from being separated from the face by short-term large impact force, and the exhaled gas is prevented from leaking into the environment to cause cross infection.
2. The air storage bag, the inspiration one-way valve, the expiration one-way valve, the exhaust liquid spraying device and other elements are optimally designed, and the specific structures and the control methods are matched with each other, so that the air storage bag, the inspiration one-way valve, the expiration one-way valve, the exhaust liquid spraying device and other elements can realize small resistance, good sealing and no outward dispersion of germs during normal respiration and cough.
Drawings
Fig. 1 is a schematic diagram of a mask construction.
Fig. 2 is a schematic view of the structure of the one-way valve for exhalation.
Fig. 3 is a schematic view of the structure of the exhaust liquid spraying device.
Detailed Description
Structure of respiratory mask
Comprises a mask body 1, an inhalation one-way valve 2, an exhalation one-way valve 3, an exhaust liquid spraying device 4 and a flexible air storage bag 5.
Wherein the mask body is constructed of a material capable of filtering pathogens, such as a material that meets the N95 standard or similar. The mask body is bowl-shaped, is fastened to the patient's mouth and face, and is secured by straps (not shown) to prevent leakage.
The mask body is provided with an air suction one-way valve, and the valve body is opened by a patient when the patient inhales, so that external air can enter the mask body without resistance and is inhaled by the patient. When the patient exhales, the inhalation one-way valve is closed, and the gas cannot be discharged through the valve body but only through the filter material of the mask body. Therefore, the resistance of the inhalation of a patient suffering from the lung disease can be reduced, the burden of the lung of the patient is reduced, and the rehabilitation is facilitated. The one-way valve is opposite to the one-way valve in the conventional breathing mask, so that the inhalation burden of a patient in the lung can be ensured to be smaller, and the exhaled gas can be ensured not to pollute the environment. This is also one of the points of the invention.
The mask body is provided with an expiration one-way valve which is connected with the rigid part of the gas storage bag. When a patient coughs, the one-way valve for expiration is opened by huge cough air flow, and the air discharged by the cough is accommodated by the flexible part of the air storage bag, so that the mask body can be prevented from being impacted due to untimely discharge of the huge cough air flow, and gaps are formed between the mask body and the face. Thus, the expired gas can be prevented from leaking from the gap to pollute the environment.
The rigid part of the gas storage bag is provided with an exhaust liquid spraying device which is used for spraying liquid to disinfect the gas storage bag after the cough of a patient is finished, and the expiration one-way valve is closed, and then the gas in the gas storage bag is discharged to the environment after the disinfection. Further avoiding polluting the environment, reducing cross infection, resetting the gas storage bag to a low pressure state, and being convenient for containing the gas from the cough during the next cough.
The flexible portion of the air storage bag can be made of PP, PLA, PHAs, PBA, PBS and the like. The rigid part of the valve is provided with threads for matching and connecting with the threads on the expiration one-way valve.
The one-way valve for expiration comprises a valve plate 3-1, an outer clamping plate 3-2 and an inner clamping plate 3-3. The valve block is rotatably arranged inside the valve body shell and is clamped in a clamping groove formed by the outer clamping plate and the inner clamping plate. Wherein the outer card is lower than the inner card. The outer clamping plate has certain flexibility, and the inner clamping plate is rigid. When the cough is violent, the air flow impacts the valve plate to enable the valve plate to rotate outwards, when the air flow is large, the valve plate impacts the outer clamping plate to enable the outer clamping plate to bend, the valve plate swings out of the clamping groove, the one-way valve is opened, and the air from the cough is normally discharged through the one-way valve. When the exhaust liquid spraying device sprays disinfection fog into the air storage bag, the pressure of the air storage bag enables the valve plate to rotate inwards, and the valve plate can strike the outer clamping plate to bend, so that the valve plate enters the clamping groove. And because the inner side clamping plate is rigid, the valve plate cannot swing further and is firmly fixed in the clamping groove. When the exhaust liquid spraying device extracts air from the air storage bag, the valve plate is tightly contacted with the inner side clamping plate due to negative pressure of the air storage bag, so that sealing is realized, the one-way valve is closed, and the air in the inner space of the mask body is prevented from being extracted by the exhaust liquid spraying device.
The exhaust liquid spraying device comprises a pump 4-1, an air extraction opening 4-2, a liquid spraying opening 4-3 and a disinfection cavity 4-4. The pump is used for pumping out the gas in the gas storage bag through the pumping hole, discharging the gas into the disinfection cavity for treatment, and discharging the gas into the environment after no bacteria exist. Meanwhile, the pump can also suck external clean air, and spray disinfection fog from the liquid spraying port after mixing disinfection liquid, so that on one hand, the air storage bag is disinfected, on the other hand, the pressure of the air storage bag is increased, and the expiration one-way valve is reset and closed. A chemical disinfectant or an ultraviolet disinfection device is arranged in the disinfection cavity.
Working process of breathing mask
1. When the patient breathes normally
When a patient inhales, the inhalation one-way valve is opened, and ambient gas enters the mask body through the inhalation one-way valve and is inhaled by the patient; when the patient exhales, the inspiration one-way valve is closed, the expiration one-way valve is closed, and the expired air enters the environment through the filter medium of the mask body. Because the impact force of the expired air is smaller, the valve plate of the expired one-way valve cannot be flushed out of the clamping groove, and therefore the expired one-way valve maintains a closed state.
2. Cough of patient
The need to accommodate the sudden expectoration of gas by the patient at this time, otherwise the abruptly increased gas can cause intermittent disengagement of the mask body from the face, causing the expired gas to leak into the environment.
At this time, because the gas impact force is great, the gas impacts the valve block of the expiration check valve, makes its flexible outside cardboard of oppression outwards crooked to finally make the valve block break away from the draw-in groove, and outwards rotate, make expiration check valve open, the gas of coughing out gets into the air storage bag through expiration check valve, and fills the air storage bag rapidly. Therefore, the gas from the cough in the mask body is rapidly contained, and gaps between the mask body and the face can be avoided.
When the cough is finished, the pump of the exhaust liquid spraying device pumps ambient air, and atomizes the disinfectant, so that the disinfectant mist is instantaneously sprayed into the gas storage bag. And the valve plate of the one-way valve for expiration rapidly rotates inwards due to the sudden impact force of the disinfection fog, and presses the flexible outer side clamping plate to bend inwards, and finally, the valve plate is fixed in the clamping groove due to the blocking of the rigid inner side clamping plate. And secondly, the pump of the exhaust liquid spraying device slowly pumps out the gas in the gas storage bag through the pumping hole, sends the gas to the disinfection cavity for disinfection, and discharges the gas to the environment after the disinfection is finished. At the moment, because the air suction impact force is smaller, the valve plate of the one-way valve cannot swing out of the clamping groove, and the one-way valve is closed, so that air in the mask is prevented from being pumped out, and discomfort is brought to a patient.
From the above, it can be seen that the pump acts differently when spraying the sterile mist and evacuating, thereby causing the exhalation check valve to be reset or remain closed. Therefore, the power of the pump for spraying mist and exhausting air needs to be optimally designed, and the requirements are met. Otherwise the pump may be turned on or off when not desired.
When spraying disinfection fog, the power of the pump is:
wherein P is 0 Is the basic power of the pump, m and n are intensity adjustment coefficients, and m is equal to or greater than n=100, 100 is equal to or greater than m is equal to or greater than 20, t is time, 0<t<0.5。
During air extraction, the power of the pump is as follows:
wherein P is 0 And m and n are intensity adjustment coefficients for the basic power of the pump, and m=0.8, 0.4 is greater than or equal to m and greater than or equal to 0.2, and t is time.
Therefore, the disinfection fog can instantaneously generate larger impact force when the fog is sprayed for disinfection, and the valve plate is ensured to reset. Meanwhile, the suction force is small during air suction, and the valve plate cannot be opened.
The above embodiments are merely descriptions of detailed solutions of the invention, and do not constitute a specific limitation of the invention. The technical problems and the technical effects mentioned in the embodiments are all problems which can be solved by the scheme of the embodiment of the invention, and are also the invention points.
Claims (9)
1. A respiratory mask for preventing cross-infection in a respiratory patient, comprising: comprises a mask body, an inhalation one-way valve, an exhalation one-way valve, an exhaust liquid spraying device and a flexible air storage bag;
the mask body is provided with an inhalation one-way valve which is used for opening the valve body when a patient inhales and closing the valve body when the patient exhales;
the mask body is provided with an expiration one-way valve which is connected with the rigid part of the gas storage bag; the expiration check valve comprises a valve plate, an outer clamping plate and an inner clamping plate; the valve plate is rotatably arranged inside the valve body shell and is clamped in a clamping groove formed by the outer clamping plate and the inner clamping plate; wherein the outer clamping plate is lower than the inner clamping plate, the outer clamping plate is flexible, and the inner clamping plate is rigid;
the rigid part of the air storage bag is provided with an exhaust liquid spraying device, and the exhaust liquid spraying device comprises a pump, an extraction opening, a liquid spraying opening and a disinfection cavity; the pump is used for pumping out the gas in the gas storage bag through the pumping hole, discharging the gas into the disinfection cavity for treatment, and discharging the gas into the environment after no bacteria exist; meanwhile, the pump can also suck external clean air, mix disinfectant and then spray disinfectant mist from the liquid spraying port, on one hand, disinfect the air storage bag, on the other hand, increase the pressure of the air storage bag, so that the expiration check valve is reset and closed;
when a patient coughs severely, the air flow impacts the valve plate to enable the valve plate to rotate outwards, when the air flow is large, the valve plate impacts the outer clamping plate to enable the outer clamping plate to bend, so that the valve plate swings out of the clamping groove, the one-way valve is opened, and the gas from the cough is discharged into the gas storage bag through the one-way valve; after the cough is finished, the exhaust liquid spraying device sprays disinfection fog into the air storage bag, the impact force of the disinfection fog enables the valve plate to rotate inwards, the valve plate can strike the outer clamping plate to enable the valve plate to bend, and therefore the valve plate enters the clamping groove;
the mask body is composed of a material capable of filtering pathogens.
2. A mask as claimed in claim 1, wherein: after disinfection, when the exhaust liquid spraying device pumps air from the air storage bag, the pumping force is reduced by using smaller pump power, and the valve plate is tightly contacted with the inner side clamping plate, so that the one-way valve is closed.
3. A mask as claimed in claim 1, wherein: the gas storage bag comprises a rigid part and a flexible part, wherein the flexible part is made of PP, PLA, PHAs, PBA, PBS materials.
4. A mask as claimed in claim 1, wherein: the mask body is connected with a binding belt.
5. A mask as claimed in claim 1, wherein: a chemical disinfectant is arranged in the disinfection cavity.
6. A method of venting a respiratory mask according to any one of claims 1-5 to prevent cross-infection in a respiratory patient.
7. The method of claim 6, wherein: under the condition that a patient breathes normally, when the patient inhales, the inhalation one-way valve is opened, and ambient gas enters the mask body through the inhalation one-way valve and is inhaled by the patient; when the patient exhales, the inspiration one-way valve is closed, the expiration one-way valve is closed, and the expired air enters the environment through the filter medium of the mask body.
8. The method of claim 6, wherein: when a patient coughs, due to the fact that impact force of cough gas is large, the gas impacts the valve plate of the expiration check valve, the flexible outer side clamping plate is pressed to be outwards bent, finally the valve plate is separated from the clamping groove and outwards rotates, the expiration check valve is opened, and the gas from the cough enters the gas storage bag through the expiration check valve and is rapidly filled in the gas storage bag.
9. The method of claim 6, wherein: when the cough is finished, firstly, the pump of the exhaust liquid spraying device pumps ambient air, and atomizes the disinfectant, so that the disinfectant mist is instantaneously sprayed into the gas storage bag; the valve plate of the one-way valve for expiration rapidly rotates inwards due to the sudden impact force of the disinfection fog, the flexible outer clamping plate is pressed to bend inwards, and finally, the valve plate is fixed in the clamping groove due to the blocking of the rigid inner clamping plate; secondly, the pump of the exhaust liquid spraying device slowly pumps out the gas in the gas storage bag through the pumping hole, and sends the gas to the disinfection cavity for disinfection, and the gas is discharged to the environment after the disinfection is finished; at the moment, because the air suction impact force is smaller, the valve plate of the one-way valve cannot swing out of the clamping groove, and therefore the one-way valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210213825.6A CN114392451B (en) | 2022-03-07 | 2022-03-07 | Respiratory mask for preventing cross infection of respiratory infectious disease patient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210213825.6A CN114392451B (en) | 2022-03-07 | 2022-03-07 | Respiratory mask for preventing cross infection of respiratory infectious disease patient |
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| Publication Number | Publication Date |
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| CN114392451A CN114392451A (en) | 2022-04-26 |
| CN114392451B true CN114392451B (en) | 2023-11-10 |
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| CN111973859A (en) * | 2019-05-24 | 2020-11-24 | 德尔格制造股份两合公司 | Assembly with inhalation valve for respiratory system |
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| CN111388894A (en) * | 2020-03-03 | 2020-07-10 | 杨明亮 | Infectious disease patient respiratory discharge pathogen collecting, inactivating and auxiliary breathing equipment |
| GB2594299A (en) * | 2020-04-22 | 2021-10-27 | John Britten Alan | A face mask and system to remove pathogens from expired breaths, coughs, or sneezes from humans |
| CN113304373A (en) * | 2021-05-26 | 2021-08-27 | 新疆维吾尔自治区人民医院 | Inhalation type anesthesia device mask for anesthesia department and control method thereof |
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