CN112121318B - Respiratory mask for preventing cross infection - Google Patents
Respiratory mask for preventing cross infection Download PDFInfo
- Publication number
- CN112121318B CN112121318B CN202011003295.XA CN202011003295A CN112121318B CN 112121318 B CN112121318 B CN 112121318B CN 202011003295 A CN202011003295 A CN 202011003295A CN 112121318 B CN112121318 B CN 112121318B
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- valve
- infection
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- mask
- layer
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- 206010011409 Cross infection Diseases 0.000 title claims abstract description 25
- 206010029803 Nosocomial infection Diseases 0.000 title claims abstract description 25
- 230000000241 respiratory effect Effects 0.000 title description 16
- 239000003814 drug Substances 0.000 claims abstract description 15
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 10
- 230000002155 anti-virotic effect Effects 0.000 claims abstract description 6
- 229940079593 drug Drugs 0.000 claims abstract 5
- 239000004744 fabric Substances 0.000 claims description 16
- 238000007373 indentation Methods 0.000 claims description 7
- 238000007731 hot pressing Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- -1 and the fixing belt Substances 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 241000700605 Viruses Species 0.000 abstract description 9
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 5
- 201000010099 disease Diseases 0.000 abstract description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 238000000889 atomisation Methods 0.000 abstract 3
- 210000004072 lung Anatomy 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002685 pulmonary effect Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002120 nanofilm Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000003266 anti-allergic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- 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
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
-
- 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. ventilators; Tracheal tubes
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Zoology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
本发明公开了一种防交叉感染的呼吸罩，包括罩体和固定带，罩体分成过滤部分和支持部分，套体上采用，固定带与罩体连接，罩体上设有气阀，当使用者呼气时，气阀关闭，当使用者吸气时，气阀打开。本专利，一是用于感染病毒的患者，呼气时气阀关闭，能防止患者携带的病毒向外直接传播，必须通过抗菌杀毒层过滤后排放到空气中，有效防止交叉感染的发生；患者吸气时，气阀打开，确保充足的氧气供应。二是用于需要使用呼吸机的患者，本专利能直接与呼吸机的供氧管路连接，不需要对患者配戴呼吸面罩，使用极其方便；三是用于与雾化供药设备的雾化药物管路直接连接，通过雾化给药，以实现肺部咽喉等及其他任何疾病需要气体供药的治疗和保健。
The present invention discloses a cross-infection-proof breathing mask, including a mask body and a fixing belt. The mask body is divided into a filtering part and a supporting part. The fixing belt is connected to the mask body on the sleeve body. An air valve is provided on the mask body. When the user exhales, the air valve is closed, and when the user inhales, the air valve is opened. This patent is used for patients infected with viruses. When the air valve is closed during exhalation, the virus carried by the patient can be prevented from being directly transmitted to the outside. The virus must be filtered through an antibacterial and anti-virus layer before being discharged into the air, effectively preventing the occurrence of cross-infection. When the patient inhales, the air valve opens to ensure sufficient oxygen supply. Second, it is used for patients who need to use a ventilator. This patent can be directly connected to the oxygen supply pipeline of the ventilator, and the patient does not need to wear a breathing mask, which is extremely convenient to use. Third, it is used to directly connect to the atomization drug pipeline of the atomization drug supply equipment, and administer the drug through atomization to achieve the treatment and health care of lungs, throats, and any other diseases that require gas supply.
Description
Technical Field
The invention relates to a mask, in particular to a cross-infection prevention respiratory mask.
Background
The existing mask has the defect of single function, and the mask provided with the air valve adopts the following working mode that when the user exhales, the pressure in the mask body is increased, the air unidirectional air valve is opened, the waste gas is discharged out of the mask, and when the user inhales, the air valve is closed. For example, through searching, the national intellectual property agency discloses a patent document with the publication number of CN207744738U in the 21 st 2018, the invention provides a medical mask for preventing infectious diseases, which comprises a mask body, an elastic adjusting block, a lacing, a nose clip, a warning strip, a power supply, a switch and a buzzer, a one-way air valve, a filter element inlet and outlet, a filter element body, a sterile cotton cloth filter layer, an activated carbon adsorption layer, a HEPA filter layer, an antibacterial layer, a medicine bag and a hydrophobic nano coating.
The air valve of the patent is characterized in that when the patient exhales, the pressure in the cover body is increased, the air unidirectional air valve is opened, viruses carried by the patient are easily transmitted, cross infection is easily caused, and the function is single.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a respiratory mask for preventing cross infection.
In order to solve the technical problems, the invention adopts the following technical scheme:
The respiratory mask for preventing cross infection comprises a mask body and a fixing belt, wherein the fixing belt is connected with the mask body, an air valve is arranged on the mask body, when a user exhales, the air valve is closed, and when the user inhales, the air valve is opened.
The air valve comprises an annular valve body, a valve plate and a valve cover, wherein an outer annular baffle is arranged at the periphery of the upper end of the annular valve body, an inner annular baffle is arranged at the periphery of the valve cover, the lower end of the annular valve body penetrates through a cover body to be inserted into the valve cover, the cover body is clamped between the outer annular baffle and the inner annular baffle, a central plate is arranged in the annular valve body, an annular space between the annular valve body and the central plate is an air flow channel, the central plate is connected with the inner wall surface of the annular valve body through a plurality of connecting strips, the connecting strips are distributed radially at the periphery of the central plate, a fixing rod is arranged at the center of the plate surface of the central plate and perpendicular to the plate surface of the central plate, a fixing pipe is arranged on the bottom surface of the valve cover, the end part of the fixing rod is inserted into the fixing pipe, a mounting hole is formed in the middle of the valve plate, the valve plate is positioned in the annular valve body and is inserted into the fixing rod through the mounting hole, and a vent hole is formed in the bottom surface of the valve cover.
Further, the bottom surface of the valve cover is an inclined surface, the lower end of the annular valve body and the bottom surface clamp and fix one side edge of the valve plate together, the other side edge of the valve plate is movable, and the vent hole of the valve cover is close to the movable side edge of the valve plate.
Further, a plurality of annular bulges are arranged on the surface of the valve plate, and the annular bulges take the mounting hole of the valve plate as the center of a circle.
Further, the outer annular baffle is provided with a pipeline connector which is used for being connected with an oxygen supply pipeline of oxygen supply equipment or an atomized medicine pipeline of atomized medicine supply equipment.
Further, the gas filtering part of the cover body is sequentially composed of an outer layer, a gas-proof layer, a filter layer and an inner layer, wherein the gas-proof layer is a compound nano antibacterial gas-proof layer, and the filter layer is a PTFE nano film.
Further, the fixing belt adopts a hanging ear belt or a lacing fixed on the head, and a shaping metal strip is arranged on the surface of the cover body and at the position corresponding to the nose bridge.
Further, a plurality of discontinuous indentation lines are arranged on the surface of the gas filtering part of the cover body, and each layer in the cover body is bonded together through hot pressing by the discontinuous indentation lines.
Further, the gas filtering part of the cover body is formed by bonding a plurality of layers of cloth blanks in a hot-pressing mode, the plurality of layers of cloth blanks are bilaterally symmetrical, a V-shaped notch is formed in the middle of the lower side edge of each layer of cloth blank, the lower side edge of each layer of cloth blank is divided into a lower left side edge and a lower right side edge by the corresponding V-shaped notch, and the lower left side edge and the lower right side edge are overlapped together and hot-pressed to form the cover body.
Furthermore, the cover body is divided into a filtering part and a supporting part for saving and protecting environment, and is characterized in that the cover body supporting part is formed by adopting plastic/plastic, a fixing belt, a metal strip, a breather valve and the like. The support part is left empty, and the clamping function is designed according to the shape of the filter piece. The filter piece is installed, so that the complete cross infection prevention breathing mask is formed.
The invention has the beneficial effects that:
The respiratory mask for preventing cross infection has the main purposes that firstly, when a patient infected with virus exhales, the air valve is closed, so that the virus carried by the patient can be prevented from being directly transmitted outwards, the virus is filtered by the antibacterial and antivirus layer and then discharged into the air, the cross infection is effectively prevented, and when the patient inhales, the air valve is opened, and the sufficient oxygen supply is ensured. The respiratory mask is used for a patient needing to use the respiratory mask, when the respiratory mask is used, the pipeline connector is arranged on the air valve of the respiratory mask for preventing cross infection and can be directly connected with the oxygen supply pipeline of the respiratory mask, the respiratory mask is not required to be worn on the patient, the respiratory mask is extremely convenient to use, and the pipeline connector is directly connected with the atomized medicine pipeline of the atomized medicine supply equipment and is used for realizing treatment and health care of gas supply required by pulmonary throat and other diseases through atomized medicine supply.
The cover body of the patent is formed by hot-pressing and bonding a plurality of layers of cloth blank sheets, or adopts a mode that the supporting part and the filtering part are separated, and the cover body is manufactured by adopting the two modes, and has the characteristics of simple manufacturing process, simple operation and high manufacturing efficiency.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one skilled in the art without inventive effort from the following figures:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the gas valve of FIG. 1;
Fig. 3 is an expanded view of fig. 1.
The device comprises a cover body 1, a fixing belt 3, an air valve 4, a shaping metal strip 5, an outer layer 6, an anti-poison layer 7, a filter layer 8, an inner layer 9, a discontinuous indentation line 10, a multi-layer cloth blank sheet 11, a V-shaped notch 12, a lower left side edge 13, a lower right side edge 14, a circular valve body 15, a valve plate 16, a valve cover 17, an outer circular baffle plate 18, an inner circular baffle plate 19, a central plate 20, a connecting strip 21, a fixing rod 22, a bottom surface 23, a fixing pipe 24, a mounting hole 25, a vent hole 26, a circular protrusion 27 and a pipeline joint.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be described in further detail with reference to the accompanying drawings and the specific embodiments, and it should be noted that the embodiments of the present application and features in the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1, the respiratory mask for preventing cross infection comprises a mask body 1 and a fixing belt 2, wherein the fixing belt 2 is connected with the mask body 1, and in the embodiment of the patent, the fixing belt 2 is a hanging belt or a binding belt. The surface of the cover body 1 and the position corresponding to the nose bridge are provided with shaping metal strips 4. The cover body 1 is provided with an air valve 3, when a user exhales, the air valve 3 is closed, and when the user inhales, the air valve 3 is opened.
As shown in fig. 2, the air valve 3 comprises a circular valve body 14, a valve plate 15 and a valve cover 16, wherein an outer circular baffle 17 is arranged at the periphery of the upper end of the circular valve body 14, an inner circular baffle 18 is arranged at the periphery of the valve cover 16, the lower end of the circular valve body 14 is inserted into the valve cover 16 through the cover body 1, the cover body 1 is clamped between the outer circular baffle 17 and the inner circular baffle 18, the outer circular baffle 17 is positioned on the outer surface of the cover body 1, the inner circular baffle 18 is positioned on the inner surface of the cover body 1, a central plate 19 is arranged in the circular valve body 14, an annular space between the circular valve body 14 and the central plate 19 is an air flow channel, the central plate 19 is connected with the inner wall surface of the circular valve body 14 through a plurality of connecting strips 20, the connecting strips 20 are radially distributed at the periphery of the central plate 19, a fixing rod 21 is arranged at the center of the plate surface of the central plate 19, the fixing rod 21 is perpendicular to the plate surface 22 of the central plate 19, the end of the fixing rod 21 is inserted into the fixing tube 23, the middle part of the valve plate 15 is provided with a mounting hole 24, the annular valve plate 15 is positioned on the bottom surface of the central plate 19, and the annular valve body is provided with a vent hole 25 and is arranged on the bottom surface of the central plate 16.
The bottom surface 22 of the valve cover 16 is an inclined surface, the lower end of the circular valve body 14 and the bottom surface 22 clamp and fix one side edge of the valve plate 15 together, the other side edge of the valve plate 15 is movable, the vent hole 25 of the valve cover 16 is close to the movable side edge of the valve plate 15, when in expiration, the valve plate 15 is clung to the lower end of the circular valve body 14 to close the air flow channel, and when in inspiration, the movable side edge of the valve plate 15 is separated from the lower end of the circular valve body 14 to open the air flow channel.
The valve plate 15 is made of soft plastic sheet. The surface of the valve plate 15 is provided with a plurality of annular bulges 26, and the plurality of annular bulges 26 take the mounting hole of the valve plate as the center of a circle. The annular bulge 26 can play a role of a reinforcing rib, and the valve plate 15 is not easy to deform so as to improve the tightness of the air valve.
The outer annular baffle 17 is provided with a pipeline joint 27, and the pipeline joint 27 is used for being connected with an oxygen supply pipeline of oxygen supply equipment or an atomized medicine pipeline of atomized medicine supply equipment. The outer annular flap 17, the annular valve body 14, the line connector 27, the connecting strip 20, the center plate 19 and the fixing rod 21 are integrally formed by injection molding. Similarly, the valve cover 16, the inner annular flap 18 and the fixed tube 23 are also integrally formed by injection molding.
The respiratory mask for preventing cross infection has the main purposes that firstly, the air valve is closed when a patient infected with viruses exhales, the viruses carried by the patient can be prevented from being transmitted outwards, the occurrence of cross infection is effectively prevented, and when the patient inhales, the air valve is opened, so that sufficient oxygen supply is ensured. The patient who is used for needs to use the breathing machine, during the use, be equipped with the pipeline joint on the pneumatic valve of the respiratory mask of preventing cross infection of this patent, can directly be connected with the oxygen supply pipeline of breathing machine, need not wear the respirator to the patient, it is extremely convenient to use, is used for the pulmonary patient, with the pipeline joint of this patent with the atomizing medicine pipeline direct connection of atomizing medicine supply equipment, through the atomizing dosing to realize pulmonary treatment.
The cover body 1 is composed of an outer layer 5, an anti-poison layer 6, a filter layer 7 and an inner layer 8 in sequence. The outer layer 5 is made of waterproof non-woven fabrics, the gas-defense layer 6 is made of compound nano antibacterial gas-defense layers, and the filter layer 7 is made of PTFE nano films, so that the filter effect is more than 99%. The inner layer 8 is made of 3S hydrophilic non-woven fabric, so that the water exhaled by a user can be absorbed, and the inner layer has comfort feeling when being contacted with skin and has an antiallergic effect. The cover body can be made of plastic/plastic, and then the multi-layer filtering material is added to form a complete whole, so that the cover body can be recycled.
The surface of the cover body 1 is provided with a plurality of discontinuous indentation lines 9, and each layer in the cover body is bonded together by the discontinuous indentation lines 9 through hot pressing. The layers can be connected and fixed into a whole.
The cover body 1 of the patent is formed by hot-pressing and bonding a plurality of layers of cloth blank sheets, wherein a plurality of layers of cloth blank sheets comprise the outer layer 5, the anti-virus layer 6, the filter layer 7 and the inner layer 8. The multi-layer cloth blank sheet 10 is bilaterally symmetrical, a V-shaped notch 11 is formed in the middle of the lower side edge of the multi-layer cloth blank sheet 10, the lower side edge of the multi-layer cloth blank sheet 10 is divided into a lower left side edge 12 and a lower right side edge 13 by the V-shaped notch, and the lower left side edge 12 and the lower right side edge 13 are overlapped together and hot-pressed to form the cover body 1. The cover body 1 manufactured by the method is simple to operate and high in manufacturing efficiency.
Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003295.XA CN112121318B (en) | 2020-09-22 | 2020-09-22 | Respiratory mask for preventing cross infection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003295.XA CN112121318B (en) | 2020-09-22 | 2020-09-22 | Respiratory mask for preventing cross infection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112121318A CN112121318A (en) | 2020-12-25 |
| CN112121318B true CN112121318B (en) | 2025-02-25 |
Family
ID=73842370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011003295.XA Active CN112121318B (en) | 2020-09-22 | 2020-09-22 | Respiratory mask for preventing cross infection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112121318B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643926Y (en) * | 2003-07-17 | 2004-09-29 | 刘敬东 | Filter-type exhalation sterilization respirator |
| CN202920765U (en) * | 2012-10-08 | 2013-05-08 | 崇仁(厦门)医疗器械有限公司 | Breathing mask |
| CN105920754A (en) * | 2016-04-19 | 2016-09-07 | 苏州乐众能源科技有限公司 | Mask exhalation valve |
| CN210447887U (en) * | 2019-06-27 | 2020-05-05 | 广州市保为康劳保用品有限公司 | Respirator with novel expiratory valve |
| CN111449335A (en) * | 2020-06-08 | 2020-07-28 | 广州从化祥盛无纺布有限公司 | Face mask |
| CN214232447U (en) * | 2020-09-22 | 2021-09-21 | 邓辉 | Cross infection preventing respiratory mask |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730460A (en) * | 2017-01-06 | 2017-05-31 | 东莞市利发爱尔空气净化系统有限公司 | A kind of breather valve and mouth mask |
-
2020
- 2020-09-22 CN CN202011003295.XA patent/CN112121318B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643926Y (en) * | 2003-07-17 | 2004-09-29 | 刘敬东 | Filter-type exhalation sterilization respirator |
| CN202920765U (en) * | 2012-10-08 | 2013-05-08 | 崇仁(厦门)医疗器械有限公司 | Breathing mask |
| CN105920754A (en) * | 2016-04-19 | 2016-09-07 | 苏州乐众能源科技有限公司 | Mask exhalation valve |
| CN210447887U (en) * | 2019-06-27 | 2020-05-05 | 广州市保为康劳保用品有限公司 | Respirator with novel expiratory valve |
| CN111449335A (en) * | 2020-06-08 | 2020-07-28 | 广州从化祥盛无纺布有限公司 | Face mask |
| CN214232447U (en) * | 2020-09-22 | 2021-09-21 | 邓辉 | Cross infection preventing respiratory mask |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112121318A (en) | 2020-12-25 |
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