CN1919376A - Face mask and air leak real-time detection method - Google Patents
Face mask and air leak real-time detection method Download PDFInfo
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- CN1919376A CN1919376A CN 200610062664 CN200610062664A CN1919376A CN 1919376 A CN1919376 A CN 1919376A CN 200610062664 CN200610062664 CN 200610062664 CN 200610062664 A CN200610062664 A CN 200610062664A CN 1919376 A CN1919376 A CN 1919376A
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Abstract
The invention discloses a face mask and leakage detecting method of face mask, which contains lid, wherein the mask possesses head coil or ear coil, which contains at least one fixed or replaced filtering device, the mask is composed of inner mask and transparent periphery around the inner mask, the filtering device is placed on the inner mask, the transparent periphery attaches the user face, which forms sealing edge with entire mask, the fine frosted pit is formed on the inner side of transparent peripheral back with external side as smooth surface or the back possesses real-time variation displayed covering layer. The invention can display connecting degree between mask and face, which monitors leakage condition effectively.
Description
[technical field]
The present invention relates to a kind of face shield, particularly about a kind of face shield and leak detection method thereof by naked eyes real-time judge gas leakage situation.
[background technology]
People sometimes need be at the more serious local work of air pollution, as dust atmosphere or be subjected to biochemical pollute local movable.In order to ensure people's eupnea, under the contaminated environment of described air, work, people generally need be with breathing equipment or face shield, made people avoid sucking contaminated air and accidents such as poisoning take place.
Effective face shield or breathing equipment must possess two primary conditions.First filtering medium must effectively exclude airborne particulates emission, allows that air passes through; Its two, face shield or breathing equipment must be adjacent to the user facial fully the cooperation, walk around filtering medium and enter the possible of user's respiratory system with the eliminating particulates emission.Yet, the face shield of same model is generally large-scale production, each face shield shape size is basic identical, but,, always there are differences because everyone shape of face size always has difference, therefore, be difficult to guarantee that mass-produced face shield can closely cooperate with people face, satisfy user's shape of face requirement, so the situation that may leak air.In addition, during described inward mask leakage,, be difficult in time be found, so occur contingency easily because general gas leakage is less.
Especially, work under some high-risk environment, under hospital, asbestos workshop and some toxic gas environment, people are combined with stricter regulation to face shield and shape of face.The related work personnel that under described high-risk environment, work need accept annual at least once, the face shield veneer test fit-test by special messenger's operation combines closely to determine face shield and face that the face shield user is worn, avoid occurring the situation of inward mask leakage.Yet because test procedure is numerous and diverse, and need to cooperate expensive test equipment and must be, so cost is higher, is not that general midget plant or a people can arrange enforcement by relevant qualified special messenger's operation.In addition, the test of described veneer has only indicative reference role, and can't determine actual use the time, whether described face shield exists the gas leakage situation.Even therefore by the face shield of face shield veneer test, because service time and test time are different, still may there be the situation of gas leakage in described face shield, thus the hidden danger and the danger that can bring to the health and lives of staff under the high-risk environment.
[summary of the invention]
Technical problem to be solved by this invention is: for the mask seal that overcomes prior art not sternly and can't indicate the problem of gas leakage in real time, be necessary to provide a kind of by the face shield of its sealing condition of naked eyes real-time judge and the air leak real-time detection method of face shield.
Technical scheme proposed by the invention is:
A kind of face shield, it comprises that one coats the cover body of user's mouth and nose at least, described cover body is provided with the head that is available for users to wear and encloses or the ear circle, and also be provided with at least one fixing or replaceable filter, it is characterized in that: described cover body is made of inner cover and the transparent periphery that is connected to this inner cover periphery, fixing or replaceable filter places on the inner cover, and after described transparent periphery and user face fitted, formation one was surrounded on the sealing strip in the whole cover body outside.
Described transparent periphery constitutes for the drainage material, and inboard, the transparent peripheral back side has careful frosted line, and the outside is a smooth surface.
At the described transparent peripheral back side, be provided with and can see through the transparent peripheral cover layer that shows real-time change, after described cover layer and user face fitted, formation one was surrounded on the sealing strip in the whole cover body outside.
Described cover layer is for constituting according to the thermosensitive chromotropic material that temperature height change color, is attached on the transparent peripheral back side and the face applying of user face.
Perhaps, described cover layer be for changing the pressure sensitive of color or little pulp material constitutes according to the pressurized situation, on the face of fitting with user face that is attached to the transparent peripheral back side.
Described filter comprises a filtering medium layer, a check valve film layer and the number of plate-shaped check valve that is cascading;
For cooperating different user's shape of face requirements, described transparent peripheral edge portion is arranged with some lines that are easy to cut out.
According to above-mentioned mask designs, air leak real-time detection method proposed by the invention is:
A kind of inward mask leakage real-time detection method, it is characterized in that: the liquid that will easily give birth to foam is applied on the transparent peripheral back side of described face shield, allow the user wear face shield, eupnea, its cover body coats wearer's mouth and nose at least, and the transparent peripheral back side is touched mutually with facial skin, when its when face touches formed sealing strip mutually and does not fit in user face fully, described liquid can produce foam at air-leak section, and the position of its foam and what promptly demonstrate the position and the degree of gas leakage in real time.
Perhaps, allow the user wear the face shield that the transparent peripheral back side is made of frosted line drainage material, eupnea, its cover body coats wearer's mouth and nose at least, the transparent peripheral back side is touched mutually with facial skin, when its when to touch formed sealing strip mutually be continuous full transparence with face, represent that then sealing strip and face fit closely; If when having translucent frosted line breach in the sealing strip, then expression has the leakage part, promptly changes from the sealing strip transparency and judges mask seal.
Perhaps, allow the user wear the transparent peripheral back side by thermosensitive chromotropic material, or pressure sensitive, or little pulp material constitutes the face shield of cover layer, eupnea, its cover body coats wearer's mouth and nose at least, and cover layer is touched mutually with facial skin, if cover layer touches formed sealing strip color change mutually with face, then be that sealing strip and face fit closely; If the original color of sealing strip remains unchanged, then be the gas leakage part, promptly judge mask seal from the change color of sealing strip part.
Be different from prior art, the present invention is divided into inner cover and transparent periphery with the face shield cover body, and transparent peripheral back side architrave part can be showed the architrave situation of partly leaking gas in real time, and, transparent outer placing also is provided with cover layer, this cover layer adopts the leakage material that shows that can show its variation to constitute, can demonstrate the periphery and the facial tightness degree that combines of described face shield architrave part in real time, then by transparent periphery, the variation that can with the naked eye observe its form or color and taken place, thus the situation of inward mask leakage can be detected in real time.Therefore described face shield can find to exist the bad situation of gas leakage in real time, can avoid because inward mask leakage and injury that the user is brought, and its security is good, and is practical, very easy to use, and do not need special detecting instrument.In addition, the present invention also provides the method that described inward mask leakage detects in real time.
[description of drawings]
Fig. 1 is a first embodiment of the invention texture edge view;
Fig. 2 is a first embodiment of the invention structure front view;
Fig. 3 is a second embodiment of the invention texture edge view;
Fig. 4 is a second embodiment of the invention structure front view;
But the texture edge view of Fig. 5 the present invention transparent periphery cutting;
But the structure front view of Fig. 6 the present invention transparent periphery cutting;
Fig. 7 is a filter apparatus configuration schematic diagram of the present invention;
Fig. 8 is a sectional drawing of the present invention;
Fig. 9 is processed with the sectional drawing of frosted line for the transparent peripheral back side of the present invention.
Among the figure:
The 20-inner cover;
The 21-fixed filter unit; The transparent periphery of 22-; 23-ear circle;
The 24-sealing strip; The 25-bubble that leaks outside; Gas leakage bubble in the 26-;
27-active filters device; 28-head circle; The 29-cutting wires;
The 30-tie point; The 31-filter course; 32-check valve layer;
The 33-seam; 34-sheet check valve; The 35-fixing hole;
The 36-collar; The 37-cover layer; 38-frosted line.
[specific embodiment]
Fig. 1 to Fig. 9, exemplary numerous embodiments of having showed face shield of the present invention.
Face shield of the present invention can be holohedral form according to coating face, can coat face's eye, mouth, nose, also can be hemihedral form, can coat mouth, nose, also can be 1/4 formula, can coat mouth and nose.Its concrete structure can be designed to cup type, or can be folded into directly to flat, or can be folded into horizontal flatly, can also be other multiple folding mode, be convenient to packing and collection.On the described cover body, be fixed with and hold the ear circle 23 that the user wears, make cover body be coated on wearer's face.The method of the present invention for providing gas leakage to detect in real time, the face that is coated on face on the cover body is designed to two parts---inner cover 20 and be connected to transparent peripheral 22 of these inner cover 20 peripheries, at least be provided with a fixed filter unit 21 or replaceable filter 27 on the wherein said inner cover 20, above-mentioned filter can directly link to each other with transparent peripheral 22, serve as inner cover 20, also can be used as the part of inner cover 20, be fixed on the inner cover by collar 36.Described transparent peripheral 22 can be airtight drainage material constitutes, as polypropylene, polyvinyl chloride, Low DensityPolyethylene (LDPE), Polypropylene (PP), Ethylene Vinyl Acetate (EVA), silica gel materials such as (silicon rubber), when fitting, can form a sealing strip 24 that is surrounded on the whole cover body outside with user face.Owing to adopt transparent peripheral 22, then the sealing strip 24 of fitting with face is equally also very transparent, the gas of user's exhalation can produce certain steam, thereby its tightness degree that combines with face can be directly by being observed visually, so can know the gas leakage situation of face shield immediately.Like this, when people put on described face shield, air entered through fixed filter unit 21 and filters, and the particle of adsorbable harmful substance can carry out purified treatment to the air of the logical inner cover 20 of flowing through, and makes that the air that enters people's mouth and nose is a fresh air.
Described transparent peripheral 22 back sides can be processed with careful as shown in Figure 9 frosted line 38, and the front is a smooth surface.When not wearing, it transparent peripheral 22 presents translucent frosted shape; When putting on face shield, fit with face, after respiratory cycle several times, the aqueous vapor in the breathing increases gradually, and has part to be confined in sealing strip 24 positions in the cover.Because the optical effect of water, the frosted shape part that was translucent originally can become the bright state of full impregnated during architrave.The bright part of this full impregnated is then represented the architrave good seal if form a continuous circle along sealing strip 24; Represent that then the gas leakage part is arranged if present translucent frosted shape breach.
As shown in Figure 8, as of the present invention further, the binding face of its transparent peripheral 22 back sides and user face can be provided with the cover layer 37 that one deck can show variation in real time, this cover layer 37 can adopt painting way make its be attached to transparent peripheral 22 with face that face touches mutually on, or add transparent peripheral 22 and directly to be attached to transparent peripheral 22 back sides man-hour.Simultaneously, because transparent peripheral 22 upper caldding layers 37 adopt the material that shows its variation, when fitting with face, gas leakage position on its sealing strip 24 can produce obvious variation, just can with the naked eye find by transparent peripheral 22 like this, thereby in time know the gas leakage situation of face shield, realized the function of real-time detection.
Fig. 1, Fig. 2 have showed a kind of embodiment of the present invention.
See also Fig. 1, Fig. 2, it is the structural representation of face shield first embodiment of the present invention.In this embodiment, be provided with a fixed filter unit 21 on the described inner cover 20 at least, this fixed filter unit 21 can directly link to each other with transparent peripheral 22, serves as inner cover 20, and a part that also can be used as inner cover 20 is fixed thereon.Described transparent peripheral 22 are the transparent material formation, these transparent peripheral 22 back sides, be coated with and be brushed with one deck cover layer 37 that can show variation in real time as shown in Figure 8, after this cover layer 37 is fitted with user face, can form a sealing strip 24 that is surrounded on the whole cover body outside, described cover layer 37 should be greater than sealing strip 24 width that contact with user face, so that can demonstrate the situation of variation accurate, clear, legibly along transparent peripheral 22 transverse width.
Described cover layer 37 constitutes for can be thermosensitive chromotropic material, and described thermosensitive chromotropic material is meant the material with thermochromic properties.At present, thermosensitive chromotropic material mainly contains the mineral-type thermosensitive chromotropic material, liquid crystal type thermosensitive chromotropic material, organic class thermosensitive chromotropic material.The present invention generally adopts the liquid crystal type thermosensitive chromotropic material, and this class material has unique optical property, can change the change that causes color with ambient temperature, produces different visual effects.The thermo-sensitive material that the present invention adopts near and can its temperature change value of rapid variable color when being lower than body temperature at skin surface critical-temperature～33-35 degree Celsius, thereby can determine whether the existence of gas leakage from the change color of sealing strip 24.
Described cover layer 37 also can be the transparent covering layer that contains pressure sensitive or little pulp material, wherein pressure sensitive can be thin film sensor (PressureX, produce by U.S. Sensorproducts Inc), this is a kind of contact pressure indication sensing film, be placed on during use between the surface that contacts with each other or extrude, to change color along with action moment of contact, extrusion, and permanent the maintenance.The color that shows has represented the intensity and the surface pressing size of contact extrusion proportional.Little pulp material can adopt soft silica gel (Softsilicon rubber), polyurethane rubber (Polyurethane rubber) etc., and above-mentioned material has and can go to another kind of color from a kind of color rapidly when being subjected to certain pressure.The user only need wear face shield and keep eupnea, can the color of sealing strip 24 parts judge whether sealing is good, can in time find to leak part by naked eyes on transparent peripheral 22, and is very convenient.
Fig. 7 has showed improved filter device structural representation of the present invention, and embodiment one is a fixed filter unit 21, and it comprises a filtering medium layer 31, thin layer 32 that is cascading and the number of plate-shaped check valve 34 that cuts out on this film.Thin layer 32 can utilize thermal weld or ultrasonic welding to sew up with maintenance closely with filtering medium layer 31, and seam 33 is thermal weld or ultrasonic solder joint.
When sucking air, under stream pressure, sheet check valve 34 can open automatically on the described thin layer 32; When the exhalation air, then can be hampered by filtering medium layer 31 and close automatically, therefore described thin layer 32 and sheet check valve 34 can reduce that steam accumulates on the filtering medium layer 31 in a large number when breathing, thus the service life of improving filtering medium layer 31.The filter 21 of face shield of the present invention is not limited to one, can be several, and it encloses 22 with transparent limit and also can be and fixedly connected, and is disposable use.
Fig. 3, Fig. 4 have showed the present invention's another kind of embodiment.
See also Fig. 3, Fig. 4, it is the structural representation of face shield second embodiment of the present invention.
Present embodiment is similar substantially to embodiment one, different is, its filter is an active filters device 27, it is that a kind of removably is loaded on the cover body, offer a fixing hole 35 on cover body, collar 36 can be sleeved on the fixing hole 35, is an elastic component, available hand puts it into or takes out, and active filters device 27 is fixedly welded on the collar 36.When big or time was long when environmental pollution, replaceable filter prolonged face shield service life, and can improve the security of use.The structure of described filter also can adopt structure shown in Figure 7, can also adopt other design, to have same effect.
Similarly, the filter 27 of face shield of the present invention is not limited to one, can be several, and it encloses 22 with transparent limit and also can be and fixedly connected, and is disposable use.
As Fig. 5, shown in Figure 6, because user's shape of face is different, face shield of the present invention also can be done following improvement: described transparent peripheral 22 marginal portions are provided with some cutting wires 29, can be made into some outer shrouds that are easy to cut out, with the less user of better fit shape of face, further guarantee sealing effectiveness.
According to above-mentioned design, the invention provides the real-time detection method of the gas leakage of following face shield.
Usually, side within the face shield transparent peripheral 22 as described in the liquid of easily giving birth to foam is applied in as liquid soap, allow the user wear face shield, eupnea, its cover body coats wearer's mouth and nose at least, transparent peripheral 22 back sides are touched mutually with facial skin, when when face touches formed sealing strip 24 mutually and does not fit in user face fully, there is the place of gas leakage to produce the naked eyes bubble of identification easily on transparent peripheral 22, wherein is positioned at sealing strip 24 inboards and is considerable gas leakage bubble 26 owing to air leaks.And wherein be positioned at sealing strip 24 outsides is the harmless bubble 25 that leaks outside, and the position of its bubble and what can show the position and the degree of gas leakage in real time.
Face shield of the present invention just can effectively be found the bad gas leakage situation of cover body owing to only need to be coated with liquid in transparent peripheral 22 inboards, and is therefore simple in structure, safe, practical.
When described transparent peripheral 22 have careful frosted line 38 for drainage, its inboard, back side, the air leak real-time detection method of its face shield is as follows: allow the user wear face shield, eupnea, its cover body coats wearer's mouth and nose at least, transparent peripheral 22 back sides are touched mutually with facial skin, form sealing strip 24.Because respiration, make facepiece interior steam increase gradually, and make part steam accumulate in the inboard architrave part in described transparent peripheral 22 back sides, at this moment, steam and transparent peripheral 22 makes that the architrave inboard was that translucent careful frosted line part becomes the bright state of full impregnated gradually originally under the refraction action of light.The bright part of full impregnated this moment is then represented described face shield architrave good airproof performance if partly become a continuous circle along sealing strip 24 architraves; If described transparent peripheral 22 still exist some translucent frosted line breach, then represent the gas leakage of frosted line indentation, there, promptly described face shield air-tightness is not good enough, so can change the real-time judge mask seal from sealing strip 24 transparencies.
When described cover layer 37 is thermosensitive chromotropic material, as the liquid crystal type material, can rapid variable color when its transparent peripheral 22 back side cover layers fit in the skin of face temperature, establish described thermo-sensitive material temperature when being lower than skin temperature color be C, color is H when being in skin temperature.
The air leak real-time detection method of its face shield is as follows: allow the user wear face shield, and eupnea, its cover body coats user's mouth and nose at least, and transparent peripheral 22 back side cover layers 37 are touched mutually with facial skin, forms sealing strip 24.Sealing strip 24 and face fit when tight, and temperature is consistent with the skin of face temperature, so shown color is H.When sealing strip 24 color H were successively distribution, then the air-tightness of described face shield was good.And work as sealing strip 24 color H is discontinuously arranged, and the breach of color C is arranged, and then the air-tightness of described face shield is bad.Described color is that the breach of C is big more, and then its gas leakage is serious more.Therefore described cover body transparent peripheral 22 shown distribution of color can detect the situation of gas leakage in real time.
Equally, when described cover layer 37 is pressure-sensitive off-color material, the architrave part is according to the different colors that change of pressurized on its transparent peripheral 22 back side cover layers 37.If color was N when described pressure-sensitive off-color material was in atmospheric pressure, pressurized during greater than atmospheric pressure color be M.During pressurized, the formed sealing strip 24 of architrave face can be transformed into the M look from the N look rapidly.When therefore the user used described face shield and eupnea, the sealing strip 24 of transparent peripheral 22 architraves part can be transformed into the M look owing to be under pressure; Not architrave part then because and exist the space to be in atmospheric pressure between the face, so the original N look of maintenance.
The air leak real-time detection method of its face shield is as follows: allow the user wear face shield, and eupnea, its cover body coats user person's mouth and nose at least, makes transparent peripheral 22 upper caldding layers 37 then and touches mutually with facial skin, forms sealing strip 24.Owing to can produce negative pressure in the face shield when user is air-breathing, thereby sealing strip 24 pressurizeds of architrave part are transformed into the M look greater than atmospheric pressure and by the N look; And because it is not combined closely with face, there is the space between the two in non-architrave part in the sealing strip 24, and when then air-breathing, the negative pressure of generation there is no effect to this part in the face shield, makes described transparent peripheral 22 colors remain unchanged, and still is the N look.Therefore, if when transparent peripheral 22 sealing strips, 24 colors are the M chromosphere of continuous distributed when air-breathing, represent that its air-tightness is good; If there is N look breach in sealing strip 24, illustrate that then this place's sealing is not good enough, may there be the phenomenon of gas leakage.Therefore can judge the air-tightness of described face shield by the distribution of sealing strip 24 colors, this method is simple, and safety and practicality are higher.
Correspondingly, the also available little pulp material of cover layer 37 replaces pressure sensitive.Described little pulp material is the N look when normally being in atmospheric pressure, and pressurized becomes the M look during greater than atmospheric pressure rapidly.So similar pressure sensitive, little pulp material in the described cover layer 37 is under the air-breathing suction function that produces, the sealing strip 24 that itself and face fit tightly is the M look, fits and does not closely locate to N look, therefore can judge the gas leakage situation of this face shield according to the continuity that transparent peripheral 22M look distributes.
The cover layer 37 that face shield of the present invention partly adheres to by transparent peripheral 24 architraves around cover body and the indication material that leaks gas constitutes, its gas leakage indication material is liquid, drainage material, thermo-sensitive material, pressure sensitive or little pulp material etc. of easily giving birth to foam, can be by showing face shield judged and indicate by material in transparent peripheral 22 the sealing strip 24 and the different demonstrations that showed of air-leak section the gas leakage situation of leaking.Described face shield with gas leakage indicative function can effectively be found the bad situation of inward mask leakage, can prevent face shield owing to leak gas, and make the user suck the danger of pernicious gas, and therefore safe, practicality is good.
Claims (11)
1. face shield, it comprises that one coats the cover body of user's mouth and nose at least, described cover body is provided with the head that is available for users to wear and encloses or the ear circle, and also be provided with at least one fixing or replaceable filter, it is characterized in that: described cover body is made of inner cover and the transparent periphery that is connected to this inner cover periphery, fixing or replaceable filter places on the inner cover, and after described transparent periphery and user face fitted, formation one was surrounded on the sealing strip in the whole cover body outside.
2. face shield according to claim 1 is characterized in that: described transparent periphery constitutes for the drainage material, and inboard, the transparent peripheral back side has careful frosted line, and the outside is a smooth surface.
3. face shield according to claim 1 is characterized in that: the described transparent peripheral back side, and be provided with and can see through the transparent peripheral cover layer that shows its real-time change, after described cover layer and user face fitted, formation one was surrounded on the sealing strip in the whole cover body outside.
4. face shield according to claim 3 is characterized in that: described cover layer is for constituting according to the thermosensitive chromotropic material that temperature height change color, is attached on the transparent peripheral back side and the face applying of user face.
5. face shield according to claim 3 is characterized in that: described cover layer be for changing the pressure sensitive of color or little pulp material constitutes according to the pressurized situation, on the face of fitting with user face that is attached to the transparent peripheral back side.
6. according to each described face shield of claim 1～5, it is characterized in that: described filter comprises a filtering medium layer, a check valve film layer and the number of plate-shaped check valve that is cascading.
7. according to the described face shield of claim 1～5, it is characterized in that: described transparent periphery is provided with some lines that are easy to cut out.
8. face shield according to claim 6 is characterized in that: described transparent periphery is provided with some lines that are easy to cut out.
9. inward mask leakage real-time detection method, it is characterized in that: the liquid that will easily give birth to foam is applied on the transparent peripheral back side of described face shield, allow the user wear face shield, eupnea, its cover body coats wearer's mouth and nose at least, the transparent peripheral back side is touched mutually with facial skin, when its when face touches formed sealing strip mutually and does not fit in user face fully, described liquid can produce foam at air-leak section, and the position of its foam and what promptly demonstrate the position and the degree of gas leakage in real time.
10. inward mask leakage real-time detection method, it is characterized in that: allow the user wear the face shield that the transparent peripheral back side is made of frosted line drainage material, eupnea, its cover body coats wearer's mouth and nose at least, the transparent peripheral back side is touched mutually with facial skin, when to touch formed sealing strip mutually be continuous full transparence, represent then that sealing strip and face fit closely with face when the transparent peripheral back side; If when having translucent frosted line breach in the sealing strip, then expression has the leakage part, promptly changes from the sealing strip transparency and judges mask seal.
11. inward mask leakage real-time detection method, it is characterized in that: allow the user wear the transparent peripheral back side by thermosensitive chromotropic material, or pressure sensitive, or little pulp material constitutes the face shield of cover layer, eupnea, its cover body coats wearer's mouth and nose at least, and cover layer is touched mutually with facial skin, if cover layer touches formed sealing strip color change mutually with face, then be that sealing strip and face fit closely; If the original color of sealing strip remains unchanged, then be the gas leakage part, promptly judge mask seal from the change color of sealing strip part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100626646A CN1919376B (en) | 2006-09-18 | 2006-09-18 | Face mask and air leak real-time detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100626646A CN1919376B (en) | 2006-09-18 | 2006-09-18 | Face mask and air leak real-time detection method |
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| CN1919376A true CN1919376A (en) | 2007-02-28 |
| CN1919376B CN1919376B (en) | 2010-10-27 |
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| CN2006100626646A Expired - Fee Related CN1919376B (en) | 2006-09-18 | 2006-09-18 | Face mask and air leak real-time detection method |
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Cited By (6)
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| CN102665811A (en) * | 2009-12-19 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Pressure support system with mask fit feedback display |
| CN103013072A (en) * | 2012-12-04 | 2013-04-03 | 常州瑞禧电力设备有限公司 | High-temperature early-warning protective hood |
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| CN2441499Y (en) * | 2000-09-29 | 2001-08-08 | 四川省劳动卫生职业病防治研究所 | Dust-proof, anti-poison mouth mask filter box |
| KR100514662B1 (en) * | 2003-05-19 | 2005-09-16 | 이시원 | Face mask |
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| CN104225835A (en) * | 2009-04-08 | 2014-12-24 | 斯科特科技公司 | Face seals for respirators and method of manufacturing respirators |
| CN102665811B (en) * | 2009-12-19 | 2015-05-13 | 皇家飞利浦电子股份有限公司 | Pressure support system with mask fit feedback display |
| CN102665811A (en) * | 2009-12-19 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Pressure support system with mask fit feedback display |
| US9687624B2 (en) | 2009-12-19 | 2017-06-27 | Koninklijke Philips N.V. | Pressure support system with mask fit feedback display |
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| US9010330B2 (en) | 2010-09-30 | 2015-04-21 | Resmed Limited | Patient interface systems |
| US11213649B2 (en) | 2010-09-30 | 2022-01-04 | ResMed Pty Ltd | Patient interface systems |
| US11344691B2 (en) | 2010-09-30 | 2022-05-31 | ResMed Pty Ltd | Patient interface systems |
| US11464931B2 (en) | 2010-09-30 | 2022-10-11 | ResMed Pty Ltd | Patient interface systems |
| CN103013072A (en) * | 2012-12-04 | 2013-04-03 | 常州瑞禧电力设备有限公司 | High-temperature early-warning protective hood |
| CN108201665A (en) * | 2018-02-24 | 2018-06-26 | 陈绍南 | A kind of protective face mask with detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1919376B (en) | 2010-10-27 |
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