TWI552784B - Nasal mask respirator with filter cartridge - Google Patents

Description

Nasal mask with protective filter

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a nasal mask type breathing apparatus, and more particularly to a replaceable filter material, a dust mask and other aversive components that can filter outside air, or a nasal mask type breathing apparatus for filtering inhaled medicine. .

Respiratory protective equipment can be broadly classified into three categories depending on the purpose of use. First, the anti-pollution type, the wearer wears to prevent the exhaled gas or splashing foam from polluting the environment and infecting others. For example, doctors wear masks during surgery, masks for infectious patients, and masks for catering operators. Second, the anti-pollution invading type, the wearer wears in order to filter the outside air to avoid being invaded by it. For example, the gas mask filters the toxic gas, various masks and nasal masks filter the dust and impurities in the environment, organic volatile gases, germs, Or allergens in the natural environment. Third, medical use of inhaled medications, using respiratory protective equipment to screen specific aerosol or powdered herbs. The functional purpose of the present invention is mainly the second one, and the third one is additional.

Traditional anti-pollution invasive respiratory protection equipment includes gas masks, bowl-shaped non-woven masks and flat masks. The advantages of gas masks It is high in adhesion and strong in filtration ability; the disadvantage is sultry, heavy and cumbersome, which causes discomfort and is difficult to wear for a long time. The advantages of the flat mask are that it is easy to wear, light and easy to carry, and cheap; the disadvantage is poor adhesion and poor filtering effect. Although the adhesion and filtering ability of the bowl-shaped non-woven mask are better, they have the following disadvantages; the coverage area is large and the sultry feeling is caused; while the cover is covered on the mouth and the nose, the gas exhaled when the user speaks is blocked from breathing. The inside of the protective equipment or the splashed foam contaminates the device, so it is easy to produce bacteria and produce odor and need to be replaced frequently.

The new bowl-shaped non-woven mask has been improved, and an exhalation valve is added. Reduce the exhalation resistance and sultry feeling, and increase the willingness to use. However, because it still has the disadvantage of being exhaled by gas or foam from the mouth, it is often discarded before its filtration effect has been reduced to an unbearable use. In addition, the addition of an exhalation valve increases the cost, making the same abandonment frequency more burdensome. cost.

Other forms of respiratory filters have been developed in the market, One of them is a nasal respiratory filter, which can be directly inserted into the nasal cavity from the nostrils, and one end is exposed outside the nostrils, and the appeal is light and the adhesion is good. For example, U.S. Patent Nos. 7,918,225 and 7,451,764. However, it has several drawbacks. First, it is stuffed into the nasal passages, causing discomfort like ear canal headphones, and even causing allergies. Second, the filtration area is small, which not only causes difficulty in breathing due to large respiratory resistance, but also the filter pores are quickly blocked by air impurities and fail. Third, nasal mucus can contaminate it, block the filter hole and make it difficult to reuse, especially for people with more nasal discharge. Fourth, when it is removed after wearing, it is easily contaminated by the environment of hand contact or placement and is not suitable for repeated use. Another structure is a nasal mask-type respiratory filter that uses a nasal mask combined with a replaceable filter material. It is a drawback to improving the nasal respiratory filter. However, its filter material is directly placed on the nasal mask cup, and the filter material is almost the same size as the nostril, and still has the disadvantage that the filtration area is too small and the breathing resistance is large.

It can be seen that there is a lack of a respiratory protection device which is comfortable in wearing, high in sealing, strong in filtering ability, low in respiratory resistance, free from nose and mouth pollution, and low in use cost. Accordingly, the present invention provides a nasal mask type breathing apparatus having a filter cartridge, and seeks to solve the same.

According to an embodiment of the present invention, a nasal mask type respiratory protection device with a filter cartridge is worn on the outside of a nose, and the device structure comprises a nasal mask body, a vent hole, a card holder, a filter cartridge, and a card seat empty chamber. And the strap module. The nasal mask body can be placed in the nose and form a nasal mask air chamber. In addition, the vent hole is opened in the lower ring wall or the tip of the nose of the nasal mask body. The card holder is connected to the nose cover and is disposed below the outer side of the vent hole. In addition, the filter cartridge can be inserted and removed in the slot of the card holder. When the filter cartridge is engaged with the card holder, the filter cartridge and the card holder form a card compartment. The vent communicates with the nasal mask air chamber and the card seat empty chamber. The nasal mask was tied at both ends of the tether, and the enveloping brain was then applied to the face of the device. Furthermore, the nasal mask body includes a nose tip and a ring wall portion. The tip of the nose is connected to the wall of the ring, and the tip of the nose is surrounded by the wall of the ring to form a nasal mask. In addition, the ring wall portion includes an upper ring wall and a lower ring wall. When the nose is placed in the nasal mask, the tip of the nose is adjacent to the tip of the nose, the upper ring wall is adjacent to the bridge of the nose and the nose, and the wall of the lower ring is adjacent to the nostril. In addition, the card holder includes a slot, a card base plate and a card seat ring wall. The card seat is connected to the nose cover and is disposed outside the vent hole Below the side. The strap module is coupled to the nasal mask body, and the strap module is used to pull the nasal mask body and the outside of the nose.

In order to improve the breathing filter while covering the nose and mouth Disadvantages, the invention adopts the structural aspect of covering only the nose, so that the large area can cover the sultry feeling of the nose and mouth, improve the wearing comfort, and can avoid the pollution of the gas or mouth foam exhaled by the mouth, and can maintain the mouth. The advantage of actuation. Nasal hood respirators are known in the art, for example, in U.S. Patent Nos. 5,243,971 and 20,140,283,843, for use in continuous positive airway pressure (CPAP) gas delivery. Many of these prior art techniques have proven that a rigid or semi-rigid nasal mask is feasible, and the structure of the present invention is quite different from these conventional techniques. The nasal mask applied to the filter respirator has U.S. Patent No. 6,752,149. However, the area of the filter material set in this patent is too small, and only a small area of the nostril end is difficult to meet the general use requirements.

Since the present invention can be made of a rigid or semi-rigid material in the nasal mask body In order to improve the adhesion to the face when worn, to prevent leakage of external air to break the filtering effect, and to increase wearing comfort, the present invention provides a gasket. The gasket is connected to the annular wall portion along the outer side edge of the nasal mask opening, and the sealing pad is used to close the outer side of the nose. Regarding the gasket of the respirator, there are known techniques, such as U.S. Patent Nos. 5,647,357, 20,140,190,492 and 4,971,051. To facilitate engagement of the gasket, the outer periphery of the nose shell can be formed as a flange structure that extends around the circumference of the nose shell and the gasket engages the flange. The gasket is made of a flexible, flexible gel material containing a viscoelastic polyurethane polymer or silicone. The shape of the sealing strip can be a solid strip or a hollow ring Strip shape, inward L shape, outward L shape or herringbone type. Regardless of the type, the purpose is to provide more flexibility and softness and light weight, which is more conducive to closeness and wear comfort.

In order to allow the gas exhaled from the nose in the nose mask to be expelled quickly, The inhaled fresh air concentration can be increased, and the stuffiness is reduced to make the wear more comfortable. The present invention adds an exhalation valve to the nasal mask. The exhalation valve is a one-way fluid valve that allows the body to flow in one direction and prohibit reverse flow. According to the aforementioned nasal mask type respiratory protection device, the nasal mask body may include an exhalation valve. The exhalation valve is disposed on the upper ring wall of the nasal mask body, and the exhalation valve can be protected by the cover. In addition, in order to minimize the exhaled exhaust gas and increase the proportion of inhaled fresh external air, the gas exhaled by the nose should be confined to the nasal mask air chamber so as not to diffuse into the card emptying chamber. For this purpose, an intake valve structure can be added to the vent.

In addition, the aforementioned seat ring wall includes a card seat empty positioning lip and A card seat seal. The card seat empty positioning lip ring is disposed on the inner side of the card seat ring wall, and the card seat sealing strip is looped and abuts against one side of the card seat empty space positioning lip, away from the side of the card seat bottom plate. When the filter 匣 is engaged with the slot, the filter 匣 closely fits the seat seal and presses against the locating lip of the card seat to form an airtight state. When the outside air enters the card emptying chamber through the filter, there is no short circuit of air leakage. The card seat ring wall of the present invention may comprise a card seat empty chamber wall, a card seat empty space positioning lip, a card seat sealing strip and a filter bowl wall. The wall of the empty space of the card seat is connected to the bottom plate of the card seat. The two ends of the positioning chamber lip of the card seat are respectively connected to the wall of the empty space of the card seat and the wall of the filtering wall, and the positioning lip of the card seat is located at the wall of the empty space of the card seat. Between the walls of the filter. The seat sealing strip ring is arranged at the connecting corner of the filtering sill wall and the positioning lip of the card seat. The slot is located on the wall of the filter.

Furthermore, the bottom plate of the card seat is connected to the lower ring wall of the nose cover body, and The wall of the ring is vertical. The card holder can be designed to filter the sputum and the slot facing the face and the card base plate to the face, so that the card base plate can be insulated from the splash. The card seat can also be designed such that the bottom plate of the card seat faces the face and the filter slot faces the face, so that the bottom plate of the card seat can hide the filter and is more beautiful. When the slot is facing the face, the lower ring wall may include a vent wall and a lip buffer wall, and the vent wall connects the lip buffer wall. The vent wall is adjacent to the tip of the nose. The lip buffer wall is worn against the face of the lower lip through the gasket when worn. The bottom plate of the card base is connected to the lower ring wall and is disposed between the wall of the vent hole and the wall of the lip buffer, and the bottom plate of the card seat is perpendicular to the wall of the lip buffer. In addition, when the slot faces the face, the lower ring wall may include a vent wall and a lip buffer wall, and the vent wall connects the lip buffer wall. The vent wall is adjacent to the tip of the nose. The lip buffer wall is worn against the face of the lower lip through the gasket when worn. The bottom plate of the card holder is connected to the tip of the nose, and the bottom plate of the card holder is perpendicular to the wall of the lip buffer.

In addition, the filter cartridge may include a filter frame and a filter material. Filter the frame to fix the filter material, so that it can be quickly installed on the deck, and it is convenient to open the frame to replace the filter material. The filter material may be a single layer, a plurality of layers or a composite of various filter material layers. The form of the filter material comprises a flat screen, a HEPA type serrated screen, a bag filter or a gas impermeable plate, wherein the bag filter can accommodate a granular or powdery filter. If you use a flat screen, you can get the lowest cost of use, even lower than a flat mask, but Excellent sealing. If a HEPA-type serrated filter is used, very fine dust particles can be filtered, and the filter area is large, which can reduce the suction impedance. If a bag filter is used and contains activated carbon or other adsorptive filter material, the organic volatile gas can be filtered; the thickness of the filter material can be much larger than the bowl-shaped non-woven mask or flat mask of activated carbon, and the adsorption filter is quite high. The effect; perhaps its adsorption filter is not as good as the gas mask, but it has quite good wearing comfort, although it can not cope with the deadly gas, it is enough to deal with most polluted organic gases. If a bag filter is used and the fragrance is contained, the wearer can inhale the scent, for example, when it is used in a odorous environment when taking a bus. If a bag-shaped filter is used and a volatile drug is contained, it can be used for the treatment of respiratory diseases. Since it can be directly inhaled into the respiratory tract through the nose, the treatment effect is good, compared with the medical equipment that inhales volatile drugs from the mouth. It must be more effective. If a gas impermeable plate is used, it can be used to check the airtightness of the wear. If the filter is compounded with these filter materials, for example, the outermost layer is insulated with non-woven fabric, the middle layer is made of activated carbon, the inner layer is made of fragrant fragrance, and the innermost layer is separated by non-woven fabric to isolate dust, so that multiple functions can be simultaneously achieved. Alternatively, different filters can be replaced at different times to suit different environments. For example, the same copy of the nasal mask-type respiratory protection device with a filter can replace different filter cartridges to cope with the working environment of dust or organic volatile gases. Further, the filter cartridge and the cartridge of the present invention may be in the form of a flat plate or an arc plate. When the card seat is in the shape of an arc plate, the card seat empty positioning lip, the card seat sealing strip and the deck bottom plate are all curved shapes.

In addition, the inserts and hooks of the filter cartridges are disposed on the sockets and the buttonholes of the card holders, and the filter cartridges are mounted on the card holders by means of plugging and unplugging. Jack, buttonhole, plug The setting of the piece and the hook allows the filter to fit tightly on the deck without loosening, which further enhances the filtering effect. Compared with the filter canister, which is screwed into the gas mask, the design has the advantages of quickness and convenience. Moreover, the number of jacks is the same as the number of inserts, and the number of buttonholes is the same as the number of hooks. The insert can be inserted into the socket, and the hook can be tightly fastened to the buckle hole, so that the filter can fit snugly against the seat seal.

Furthermore, the aforementioned device of the present invention may comprise at least one tether module group. The strap module can include at least one strap, two strap straps, and a two strap strap. The strap fasteners are disposed on the annular wall above the nasal mask body and adjacent the opposite sides of the nose tip. The ends of the strap are directly tied to the strap fixing member; or indirectly tied to the strap sleeve, and then the strap strap is quickly inserted and removed to connect the strap fixing member. The strap is a elastic elastic material with an adjustment mechanism, and the adjustment mechanism is used to adjust the length of the strap. Fixing the strap with a special strap fastening reduces the discomfort caused by the strap attaching or rubbing the face. The strap module of the present invention has two embodiments. First, the strap fixing member may be planar and extend outwardly on opposite sides. The ends of each of the strap fasteners include at least one tie hole through which the tie is tied. Second, each of the strap sleeves includes a sliding portion, at least one tie hole, and a double fold surface. The two folded faces are connected to each other. The sliding portion and the fastening hole are respectively located on the two folded faces. The sliding portion comprises a set of connecting holes, a sliding channel and a fixing hole, the socket is close to the joint of the two folded faces, and the fixing hole is away from the joint of the two folded faces, the sliding hole is fixed by the sliding channel The holes are connected. The ends of the ties are joined to the tying holes. Each strap fixing member can pass through the sleeve hole and slide through the sliding passage, The rear strap fasteners are limited to the fastening holes. In addition, the fold with the tie holes is parallel to the wearer's face.

Exhalation valves have many conventional technologies that belong to different types of structures. Provide an application. One is a cantilever type one-way fluid valve, such as U.S. Patent Nos. 6,854,463, 5,325,892 and 5,509,436. Japuntich et al.'s valves are used in a cantilever fashion, with the non-central mounting of the flexible flap on one side of the valve seat and the remaining three sides covering the rim of the valve seat. The exhalation valve of the present invention may comprise an exhalation valve seat, an exhalation flexible cover sheet and an expiratory hole. The exhalation hole is disposed in the exhalation valve seat, and one end of the exhalation flexible cover piece is disposed on one side of the exhalation valve seat. When the nose exhales, the other end of the exhalation flap is away from the exhalation hole, and the air exhaled by the nose is expelled from the exhalation hole through the nasal mask air chamber. Conversely, when the nose inhales, the exhalation flexible cover sheet tightly covers the exhalation hole.

Another common type of disc type one-way fluid valve also has mature technology. The technique is applicable, for example, in U.S. Patent No. 4,414,937. The valve of Matheson et al. uses a disc-shaped diaphragm with a single flexible flap mounted at the center of the valve seat and a circumferential portion covering the rim of the valve seat. The exhalation valve of the present invention may comprise an exhalation valve seat, an exhalation flexible cover sheet and an expiratory hole. The exhalation hole is arranged in the exhalation valve seat, the exhalation hole is round or elliptical, and the exhalation flexible cover piece is also round or elliptical, and the center of the exhalation flexible cover piece is fixed on the The center of the exhalation valve seat. When the nose exhales, the circumferential portion of the exhalation flap is away from the expiratory hole, and the air exhaled by the nose is expelled from the expiratory hole through the nasal mask plenum. Conversely, when the nose inhales, the exhalation flexible cover sheet tightly covers the exhalation hole.

The suction valve on the vent hole is structured because the vent hole is still Within the protection range of the filter material, the requirement to prevent the reverse flow of the gas does not have to be as high as the exhalation valve, as long as it can prevent most of the gas from flowing to the card emptying chamber during exhalation. A similar design can be seen in U.S. Patent No. 2,895,472. The suction valve structure comprises a vent hole and a suction flexible cover sheet, and the suction flexible cover sheet covers the entire vent hole and is fixed across the line of the vent hole. When the nose inhales, the other end of the inspiratory flexible cover sheet is away from the vent. Conversely, when the nose exhales, the inspiratory flexible cover sheet tightly covers the vent. In addition, one end of the inspiratory flexible cover sheet is disposed around one or the center of the vent hole, and the suction flexible cover sheet is located inside the nose cover body.

Furthermore, because the cover sheet of the suction valve structure is flexible, if it is too hard The opening area is small and is not good for inhaling. If it is too soft, it will collapse through the vent hole and lose the anti-blocking effect. Designed to change the vent structure in order to make it soft and not collapse. Therefore, in addition to a hollow structure, the vent structure can be changed to a fence structure or a porous structure to prevent the collapse of the flexible cover sheet.

According to the foregoing structural aspect of the present invention, it has a plurality of basic advantage. First, only covering the nose can not only improve the sultry feeling of the large area covering the nose and mouth, improve the wearing comfort, but also avoid the pollution of the mouth exhaling gas or foam, and the advantage of keeping the mouth active. Second, the nose cup is matched with a gasket and a tie to improve the adhesion to the face. Third, the filter material has a large area, which can improve the filtration effect and reduce the respiratory impedance. Fourth, after the nasal mask cup is removed from the filter, it can be cleaned separately to maintain cleanliness and extend the service life. With the above embodiment, the nasal mask body can closely fit the nose through the sealing pad The outside face is effectively isolated. In addition, a larger filter material can be used to improve the breathing difficulty of the conventional filter material due to the small ventilation, so as to effectively improve the filtration effect. At the same time, the filter material can be used for the treatment of respiratory diseases with the use of a medicament, and the therapeutic effect is good because it can be directly inhaled into the respiratory tract through the nose. Furthermore, the exhalation valve and the inhalation valve allow the gas to flow in one direction, so that the exhaled gas is easily discharged, and the retained exhaust gas is minimized, and the exhausted exhaled exhaust gas is eliminated. In addition, different types of filter cartridges or filter materials can be replaced, which not only has the effect of filtration or treatment, but also does not need to replace the entire filter, and has an environmental protection concept.

100, 600, 700‧‧‧ nasal mask breathing apparatus with filter cartridge

200‧‧‧ nose mask

202‧‧‧Nasal mask

210‧‧‧ nose tip

220‧‧‧ Ring Wall

222‧‧‧The ring wall

224‧‧‧ Lower ring wall

226‧‧‧ vent wall

228‧‧‧ Lips buffer wall

230‧‧‧Exhalation valve

232‧‧‧Exhaust valve seat

234‧‧‧Exhaled flexible cover

236‧‧‧Exhaust hole

240‧‧‧ nasal mask opening

250, 250', 250" ‧ ‧ seals

252‧‧‧Flange

260‧‧‧vents

270‧‧‧Aspirating flexible cover

300, 300'‧‧‧ deck

310, 310'‧‧‧ slots

320, 320'‧‧‧ deck base plate

330‧‧‧ card seat ring wall

332‧‧‧Cable empty room wall

334‧‧‧Card empty chamber positioning lip

336‧‧‧Seat seal

338‧‧‧Filter wall

340‧‧‧Card empty room

350‧‧‧ jack

352‧‧‧ buttonhole

400, 400'‧‧‧ Filters

410‧‧‧ insert

420‧‧‧Hook

430‧‧‧Filter frame

441, 441'‧‧‧ flat screen

442‧‧‧HEPA type serrated filter

443‧‧‧Bag filter

444‧‧‧Airtight board

450‧‧‧Card fence cover

452‧‧‧Card fence bottom plate

500, 500'‧‧‧Layer module

510, 510'‧‧‧Lace fixings

520‧‧‧Layered socket

521‧‧‧Sliding

522, 522'‧‧‧ tie holes

523, 523'‧‧‧Face

524‧‧‧ sockets

525‧‧‧Sliding channel

526‧‧‧Fixed holes

530, 530'‧‧‧Leg

532, 532'‧‧‧ adjustment mechanism

FIG. 1 is a schematic view showing the wear of a nasal mask type respiratory protection device with a filter cartridge according to an embodiment of the present invention.

Fig. 2 is a perspective view showing the nasal mask type breathing apparatus with a filter cartridge according to Fig. 1.

Fig. 3 is an exploded view of the nasal mask type breathing apparatus with a filter cartridge according to Fig. 1.

Fig. 4 is a cross-sectional view showing a line A-A of Fig. 2;

Figure 5 is a perspective view of the strap module of Figure 1.

FIG. 6 is a perspective view of a nasal mask type respiratory protection device with a filter cartridge according to another embodiment of the present invention.

Fig. 7 is a cross-sectional view showing a nasal mask type respiratory protection device with a filter cartridge according to still another embodiment of the present invention.

FIG. 8A is a perspective view of a filter frame and a filter material according to another embodiment of the present invention.

FIG. 8B is a perspective view of a filter frame and a filter material according to still another embodiment of the present invention.

Fig. 8C is a perspective view showing the gas impermeable plate of the present invention.

8D is a perspective view of a filter frame and a filter material according to still another embodiment of the present invention.

Fig. 9A is a cross-sectional view showing a gasket of an embodiment of the present invention.

FIG. 9B is a cross-sectional view showing the gasket of another embodiment of the present invention.

Figure 9C is a cross-sectional view showing a gasket of still another embodiment of the present invention.

FIG. 1 is a schematic view showing the wear of a nasal mask type respiratory protection device 100 with a filter cartridge according to an embodiment of the present invention. As shown, the nasal mask-type respiratory shield 100 having a filter cartridge includes a nasal mask body 200, a cartridge holder 300, a filter cartridge 400, and a strap module 500. In addition, the device of the present invention further includes a nasal mask plenum 202, a cassette empty chamber 340, and a venting opening 260.

Please refer to Figure 2, Figure 3 and Figure 4 together. Fig. 2 is a perspective view showing the nasal mask type respiratory protection device 100 with a filter cartridge according to Fig. 1. Figure 3 is an exploded view of the nasal mask-type respiratory shield 100 with the filter cartridge of Figure 1. Fig. 4 is a cross-sectional view showing a line A-A of Fig. 2; The nose cover 200 can be placed in the nose, and the material can be made of PP or other plastic. The nose cover 200 includes a nose portion 210 and a ring portion 220, exhalation valve 230, nasal mask opening 240, gasket 250, and vent 260. The nose tip 210 is connected to the ring wall portion 220, and the nose tip portion 210 and the ring wall portion 220 are surrounded to form a nasal mask plenum 202. The ring wall portion 220 includes an upper ring wall 222 and a lower ring wall 224. When the nose is placed into the nasal mask body 200, the nose tip portion 210 is adjacent to the nose tip, the upper ring wall 222 is adjacent to the nose bridge and the nose wing, and the lower ring wall 224 is adjacent to the nostril. Lower ring wall 224 includes a venting wall 226 and a lip buffer wall 228. The two ends of the lip buffer wall 228 are respectively connected to the vent wall 226 and the gasket 250, and the vent wall 226 is adjacent to the nose tip 210. The lip buffer wall 228, when worn, passes through the gasket 250 against the face on the lower lip of the nose. The face area includes a person, and the gasket 250 can closely conform to the face area.

In addition, the nose is placed by the nasal mask opening 240, and the nasal mask is opened. The mouth 240 can be at least sized to cover the entire nose and nostrils. The nasal mask opening 240 has a triangular shape and the same shape as the front of the nose. Of course, the shape of the nasal mask opening 240 can also be other shapes as long as it covers the nose and the nostrils. In addition, the gasket 250 is coupled to the annular wall portion 220 along the outer side edge of the nasal mask opening 240. When the nose is placed in the nose cover 200, the gasket 250 can be completely in close contact with the outer face of the nose, thereby preventing the nose cover 200 from creating a gap with the face. Moreover, the gasket 250 is made of a flexible elastomer, and even if the surface of the face floats, the gasket 250 can closely fit the outer face of the nose to prevent gas from passing therethrough. The manner in which the gasket 250 and the ring wall portion 220 are connected may be heat fusion, bonding or other conventional joining means as long as they are not close to each other. Furthermore, the nasal mask body 200 is provided with a ventilation hole 260 which is opened in the ventilation hole area of the lower ring wall 224. Wall 226 extends through vent wall 226. The vent 260 may be a hollow structure, a fence structure or a porous structure to allow the inner and outer spaces of the nasal mask 200 to communicate with each other.

Furthermore, the exhalation valve 230 is disposed on the upper ring wall 222 and is called The gas valve 230 includes an exhalation valve seat 232, an exhalation flexible cover sheet 234, and an expiratory hole 236. One end of the exhalation flexible cover piece 234 is disposed on one side of the exhalation valve seat 232, and the exhalation hole 236 is provided in the exhalation valve seat 232. When the nose exhales, the other end of the exhalation flap 234 is away from the expiratory aperture 236, and the air exhaled by the nose is expelled from the expiratory aperture 236 through the nasal mask plenum 202 to the outside of the nasal mask body 200; The expiratory flexible flap 234 tightly covers the expiratory aperture 236 as the nose inhales. In other words, the direction of the airflow through the exhalation hole 236 is only inaccessible. Furthermore, the shape of the exhalation hole 236 may be a round shape, a semicircular shape or an elliptical shape. In the present embodiment, the exhalation hole 236 is circular. The shape of the exhalation valve seat 232 can be round or rectangular. In the present embodiment, the exhalation valve seat 232 is circular. Regardless of the shape of the expiratory valve seat 232, the shape and size of the exhalation flap 234 and the expiratory aperture 236 must cooperate to achieve a tight fit. It is worth mentioning that the structure of the exhalation valve 230 can adopt the design of the Taiwan Patent No. I238729 or M402110, and the special exhalation valve 230 can also achieve the effect of exhalation opening and inspiratory tightness.

In addition, the lower ring wall 224 is provided with a suction flexible cover sheet. 270. One end of the inspiratory flexible cover sheet 270 is disposed at one of the periphery of the vent hole 260, and the suction flexible cover sheet 270 is located inside the nasal mask body 200, that is, in the nasal mask plenum 202. Suction flexible cover sheet 270 when the nose inhales The other end is away from the vent 260. At this time, the gas in the cassette empty chamber 340 can enter the nasal mask plenum 202 through the vent hole 260. Conversely, when the nose exhales, the inspiratory flexible cover sheet 270 will assume a flat planar shape and closely close the venting opening 260, at which point the inspiratory flexible cover sheet 270 can effectively isolate the nasal mask plenum 202. The gas flows from the vent 260 into the cassette empty chamber 340. Since the suction flexible cover sheet 270 needs to completely cover the fitting vent 260, the shape of the suction flexible cover sheet 270 needs to be related to the shape of the vent hole 260. For example, when the vent hole 260 is elongated, the shape of the suction flexible cover sheet 270 is preferably a rectangular strip shape. In addition, a plurality of vent holes 260 may be provided with the same number of suction flexible cover sheets 270. For example, left and right long vent holes 260 may be provided corresponding to the left and right nostrils. The venting holes 260 may be in the form of a hollow structure or a staggered mesh or a porous shape to provide better support for the suction flexible cover sheet 270.

The card holder 300 includes a slot 310 and a card base 320, a card seat ring 330, a card seat empty chamber 340, a jack 350 and a button hole 352. The card holder 300 engages the outer edge of the nasal mask body 200. The slot direction of the slot 310 is toward the outside of the face, and the slot 310 is disposed in the card ring wall 330. The deck bottom plate 320 is disposed below the outer side of the vent hole 260. In addition, the upper end of the base plate 320 is connected to the lower ring wall 224 and is disposed between the vent wall 226 and the lip buffer wall 228. In other words, the lower ring wall 224 is bounded by the deck bottom plate 320, the area near the tip of the nose is the vent wall 226, and the area near the mouth is the lip buffer wall 228. In addition, the angle between the deck bottom plate 320 and the lip buffer wall 228 ranges from 70 degrees to 120 degrees, and the preferred angle is 90 degrees. Card base plate 320 and mouth Corresponding and at a certain distance from each other to facilitate exhalation, speaking, eating or other activities. Furthermore, the card seat wall 330 includes a card seat empty space 332, a card seat positioning lip 334, a card seal 336 and a filter crotch wall 338. The deck empty chamber wall 332 is connected to the deck bottom plate 320. The slot 310 is disposed on the filter wall 338. The two ends of the cassette empty positioning lip 334 are respectively connected to the cassette empty chamber wall 332 and the filter crotch portion wall 338, and the cassette empty positioning lip 334 is located between the cassette empty chamber wall 332 and the filter crotch region wall 338. . The card sealing strip 336 is disposed at the connecting corner of the filtering bowl wall 338 and the decking chamber positioning lip 334, and is fixed on the groove formed by the card seat positioning lip 334. In addition, the card empty chamber 340 is a space surrounded by the deck empty chamber wall 332 and the deck bottom 320. The vent 260 communicates with the nasal mask plenum 202 and the cassette empty chamber 340. In addition, the jack 350 and the buttonhole 352 are both disposed on the filter wall 338, and the jack 350 and the buttonhole 352 are respectively located on opposite sides of the filter wall 338. Furthermore, the card holder 300 can be in the shape of an arc. When the card holder 300 is in the shape of an arc plate, the card seat positioning lip 334, the card seat strip 336 and the deck bottom plate 320 are also in the shape of a curved surface. It is worth mentioning that the nasal mask body 200 and the card holder 300 can be integrally injection molded, and the integrated molding can mainly eliminate the leakage path, and can reduce the manufacturing cost and the weight.

The filter cartridge 400 can be inserted and detached into the slot of the card holder 300 Within 310. When the filter cartridge 400 is engaged with the cartridge 300, the filter cartridge 400, the cartridge bottom plate 320, and the cartridge ring wall 330 form a cartridge empty chamber 340. Moreover, when the filter cartridge 400 is engaged with the slot 310, the filter cartridge 400 closely fits the cartridge seal 336, and the cartridge seal 336 is located at the filter cartridge 400 and the card holder. The chamber is positioned between the lips 334. In addition, the filter cartridge 400 includes a insert 410, a hook 420, a filter frame 430, and a filter material of a planar screen 441. The tab 410 and the hook 420 are respectively protruded from both ends of the clamshell of the filter cartridge 400. In the process of the filter cartridge 400 being engaged with the card holder 300, the tab 410 is first inserted into the jack 350, and then the hook 420 is buckled into the buttonhole 352. The hook 420 will tightly engage the buckle hole 352, so that the filter cartridge 400 fits snugly against the cartridge seal 336. As can be seen from the above, the insert 410 and the hook 420 are respectively located on opposite sides of the filter cartridge 400. Of course, the number of the inserts 410 and the jacks 350 may be plural, that is, two or more, as long as the number of the inserts 410 is the same as the number of the jacks 350 and the positions correspond to the shapes. Similarly, the number of the hook 420 and the buttonhole 352 can also be plural, as long as the number of the hooks 420 is the same as the number of the buttonholes 352 and the position corresponds to the shape. As for the shape and structure of the insert 410 or the hook 420, which are quite mature and well-known, the details thereof will not be described again. In addition, the filter frame 430 is disposed on the periphery of the plane filter 441, and the insert 410 and the hook 420 are disposed on the filter frame 430. The filter material passing through the flat screen 441 can effectively filter the inhaled outside air. Since the flat filter 441 adheres to the impurities, the nasal mask-type respiratory protection device 100 with the filter cartridge needs to be replaced with the filter cartridge 400 or only the filter material after a period of use, and the nasal mask-type respiratory protection device with the filter cartridge of the present invention is used. The 100 is not only easy to replace, but also a wide range of filters 400 for different needs. It is worth mentioning that, because the filtering effect of the filter material is often proportional to the manufacturing cost, the filter material has a higher production cost, which is determined by the user's demand. Furthermore, the filter cartridge 400 and the cartridge holder 300 may each have a flat shape or an arc shape. Regardless of the shape Therefore, the shape of the filter cartridge 400 and the cartridge holder 300 must correspond to each other to achieve a tight fit.

Please refer to FIG. 5, and FIG. 5 illustrates the strap module of FIG. A perspective view of the 500. In this embodiment, two strap modules 500 are used. Each strap module 500 includes a two strap strap fastener 510, a two strap strap sleeve 520, and a strap 530. Of course, the structure can be based on the wearer's needs and the manufacturer's design, using a single strap module, or adding other auxiliary straps, such as a tie from the face through the head to the back of the head. The strap fasteners 510 of the strap module 500 are disposed on the annular wall 222 of the nasal mask body 200 and adjacent to opposite sides of the nose tip 210. Each strap sleeve 520 includes a sliding portion 521, a tie hole 522, and two fold surfaces 523, 523'. The sliding portion 521 and the fastening hole 522 are respectively located on the folding surface 523 and the folding surface 523'. The sliding portion 521 includes a set of holes 524 , a sliding passage 525 and a fixing hole 526 . The socket 524 is closer to the bend of the two folded faces 523, 523', and the fixed hole 526 is farther from the bend of the two fold faces 523, 523'. The socket 524 communicates with the fixing hole 526 through the sliding passage 525. The bi-fold faces 523, 523' are coupled to each other. Each of the strap fasteners 510 can pass through the sleeve holes 524 and slide through the sliding passage 525, and then the respective strap fasteners 510 are confined in the fastening holes 526. Moreover, each strap 530 includes an adjustment mechanism 532 for adjusting the length of the strap 530. The end of the strap 530 is coupled to the tie hole 522. The length of the strap 530 affects the tightness of the gasket 250 to the face and the comfort of the wearer. When the two strap modules 500 are worn on the user's head, one of the straps 530 will pass through the ear and wrap around the head, while the other strap 530 will pass through the ear and surround the neck. . If the length of the strap 530 is shorter, the tighter the strap 530, although the degree of tightness will increase, the relative comfort will be reduced. In order to achieve both the tightness and the comfort, the strap 530 is made of a flexible elastic band.

FIG. 6 is a diagram showing another embodiment of the present invention. A perspective view of a nasal mask breathing apparatus 600. The device includes a nasal mask body 200, a card holder 300, and a strap module 500'. Referring to the embodiment of Fig. 5 and Fig. 6, the strap module 500' is different from the strap module 500 of Fig. 5. The difference is that the strap module 500' of the embodiment of Fig. 6 includes a two strap strap fastener 510' and a strap 530'. Of course, the device can have multiple strap modules or even other strap combinations, depending on the manufacturer's design and the wearer's needs. The strap fasteners 510' of the strap module 500' are disposed on the upper ring wall 222 and adjacent to opposite sides of the nose tip 210. The second strap fixing member 510' is planar and extends outwardly from both sides of the nasal mask body 200. The end of the strap fixing member 510' has a binding hole 522' and the end of the other strap fixing member 510'. There is another tie hole 522'. In addition, the ends of the strap 530' may be provided with fastening means that can be tied, buckled, bonded or otherwise joined through the two fastening holes 522', respectively. The strap 530' has an adjustment mechanism 532' for adjusting the length of the strap 530'. Both strap fasteners 510' are of sufficient length to prevent the strap 530' from attaching or rubbing against the face, thereby avoiding discomfort to the wearer.

FIG. 7 is a cross-sectional view of a nasal mask-type respiratory shield 700 with a filter cartridge according to still another embodiment of the present invention. The device includes a nasal mask body 200, a card holder 300', a filter cartridge 400', and a strap module 500. Referring to FIG. 4, in the embodiment of FIG. 7, the nasal mask body 200 is The ligament module 500 is the same as the nasal mask 200 and the lacing module 500 corresponding to those in FIG. 4, and will not be described again. In particular, the slot direction of the slot 310' of the embodiment of Fig. 7 is toward the face. The card holder 300' includes a card base plate 320' and a slot 310'. The filter cartridge 400' is located between the mouth and the deck bottom plate 320'. The nose tip 210 of the nose mask 200 is coupled to the deck bottom plate 320'. The filter 匣 400' corresponds to the mouth and has a certain distance from each other to facilitate the mouth to breathe, talk, eat or perform other actions.

8A-8D illustrate the filter frame and filter material of the present invention Various embodiments, see Figure 3 for cooperation. FIG. 8A is a perspective view of a filter frame and a HEPA type sawtooth screen 442 according to another embodiment of the present invention. FIG. 8B is a perspective view of a filter frame and a bag filter 443 according to still another embodiment of the present invention. Figure 8C is a perspective view of the gas impermeable panel 444 of the present invention. Fig. 8D is a perspective view showing a filter frame and a filter material according to still another embodiment of the present invention. As shown in the figure, in addition to the filter screen 441 shown in Fig. 3, a HEPA type serrated filter 442, a bag filter 443 or a flat screen 441' may be used. The filter has different filtering effects. In detail, the filtering area of the HEPA type serrated filter 442 is larger than the filtering area of the flat screen 441, so that it is easy to breathe and breathe, and the HEPA type serrated filter 442 can filter very fine dust particles, and the filtering effect is good. Furthermore, the bag filter 443 can accommodate activated carbon or other adsorptive filter material, not only can filter organic volatile gas, but also the thickness of the bag filter 443 can be much larger than the bowl-shaped non-woven mask or flat mask of activated carbon. It has a fairly high adsorption filtration effect. In addition, the bag filter 443 can also contain spices for the wearer to inhale fragrance Breath, for increased odor in an environment with odor. The bag filter 443 can also contain volatile chemicals for the treatment of respiratory diseases. Since it can be directly inhaled into the respiratory tract through the nose, it is better than the medical devices that inhale the volatile drugs from the mouth. . As for the airtight plate 444, it can be used as a fitting inspection device to observe whether the gasket 250 of the nasal mask body 200 completely conforms to the face and is in an airtight state by inhaling by the wearer. In addition, the filter frame can be in the form of a cassette fence 450, and in combination with the combination of the flat screen 441' and the cassette bottom plate 452, the inhaled air can be effectively filtered. Of course, the filter material can be a single-layer filter or a multi-layer filter. The more multi-layer filter structure, the better the filtration effect, and the multi-layer filter structure can be combined with different filters to achieve different functions, such as: electrostatic dust removal, Volatile flavors or agents, fibrous activated carbon, nano-gold catalyst, screen material that can sequester water or carbon monoxide. Furthermore, a waterproof board can be installed on the outer side of the filter crucible 400 to prevent rain or other water droplets from splashing. A gap should be left between the waterproof board and the filter crucible 400 to facilitate the flow of air.

Figures 9A, 9B and 9C illustrate three embodiments of the present invention Cross-sectional views of various possible structural shapes of the gaskets 250, 250', 250". As shown, in order to be able to mount a wide variety of gaskets 250, 250', 250", the edges of the nose shell 200 can be fixed. A flange 252 is used to connect the gaskets 250, 250', 250" such that the gaskets 250, 250', 250" have sufficient joint area to fit snugly. Furthermore, the gasket 250 is circular, the gasket 250' is in the shape of an iron drill, and the gasket 250" is outwardly L-shaped. The nasal mask 200 is permeable to various types of gaskets. 250, 250', 250" not only fits closely with the face area, but also has a certain elasticity, which can make the wearer's face still have better comfort after tightening the strap module 500, 500'. Avoid the facial pressure caused by tightening the strap modules 500, 500'.

As can be seen from the above embodiments, the present invention has the following advantages: First, the nasal mask-type respiratory protection device with a filter cover only covers the nose, which not only improves the sultry feeling of the large area covering the mouth and nose, but also keeps the mouth active. Second, the gas or saliva exhaled from the mouth does not enter the respiratory protection device and contaminates the device. Third, the jagged filter material has a large area, which can reduce the suction impedance. Fourthly, the strap is fixed by a special strap fixing member to avoid the discomfort caused by the strap attaching or rubbing the face. Fifth, the slot of the card seat can face the face or the face. If the face is facing the face, the user's mouth foam can be completely isolated. If the face is facing the face, the filter can be hidden and the appearance is beautiful. Sixth, it can replace different types of filter cartridges, not only for filtration and treatment, but also without replacing the entire respiratory protection device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧ nasal mask breathing apparatus with filter cartridge

200‧‧‧ nose mask

202‧‧‧Nasal mask

210‧‧‧ nose tip

220‧‧‧ Ring Wall

222‧‧‧The ring wall

224‧‧‧ Lower ring wall

226‧‧‧ vent wall

228‧‧‧ Lips buffer wall

230‧‧‧Exhalation valve

232‧‧‧Exhaust valve seat

234‧‧‧Exhaled flexible cover

236‧‧‧Exhaust hole

240‧‧‧ nasal mask opening

250‧‧‧ Seal

252‧‧‧Flange

260‧‧‧vents

270‧‧‧Aspirating flexible cover

300‧‧‧ deck

310‧‧‧Slots

320‧‧‧ deck base plate

330‧‧‧ card seat ring wall

332‧‧‧Cable empty room wall

334‧‧‧Card empty chamber positioning lip

336‧‧‧Seat seal

338‧‧‧Filter wall

350‧‧‧ jack

352‧‧‧ buttonhole

400‧‧‧Filter

410‧‧‧ insert

420‧‧‧Hook

430‧‧‧Filter frame

441‧‧‧ flat screen

500‧‧‧Layer module

Claims (14)

A nasal mask type respiratory protection device with a filter cartridge, which is worn on the outside of a nose, the nasal mask type respiratory protection device comprising: a nasal mask body for the nose to be placed, the nasal mask body comprising a nose tip And a ring wall portion, the nose tip portion is connected to the ring wall portion, and the nose tip portion and the ring wall portion are surrounded to form a nasal mask air chamber, the ring wall portion includes an upper ring wall and a lower ring wall, when the nose is placed In the nasal mask, the nose tip is adjacent to the tip of the nose, the upper ring wall is adjacent to the nose bridge and the nose wing, the lower ring wall is adjacent to the nostril; a vent hole is formed in the lower ring wall or the tip of the nose; a card seat includes a slot, a card base plate and a card seat ring wall, the card holder engaging the nose cover body and disposed on the convex surface of the nose cup body type, the card holder bottom plate and the card seat ring wall being substantially perpendicularly connected to the nose cover The convex surface of the body extends outwardly and downwardly; a filter cartridge is detachably engaged in the slot of the card seat; a card seat empty chamber, the filter cartridge is when the filter cartridge is engaged with the card holder The deck bottom plate and the card seat ring wall form the card seat empty chamber, and the vent hole communicates with the nasal mask air chamber and An empty cartridge chamber; and at least one tether module, coupled to the nose cover and the collar to the head of the wearer, the straps module is configured to pull the nasal mask tightly fit the wearer's body and face. The nasal mask type respiratory protection device according to claim 1, wherein the nasal mask body further comprises: a nasal mask opening formed in the ring wall portion; and a sealing pad connecting the ring wall portion The gasket is for sealing the outer side surface of the nose, and the sealing gasket is connected to the annular wall portion along the nasal mask opening. The nasal mask type respiratory protection device according to claim 1, wherein the nasal mask body further comprises: an exhalation valve disposed on the upper ring wall; and an inhalation valve disposed in the passage At the stomata. The nasal mask type respiratory protection device according to the first aspect of the invention, wherein the card seat ring wall comprises a card seat empty wall, a card seat positioning lip, a card seat sealing strip and a filter wall, the wall of the card room is connected to the bottom plate of the card seat, and two ends of the positioning chamber of the card seat are respectively connected to the wall of the card room and the wall of the filter, and the card seat is empty The positioning lip of the chamber is located between the wall of the empty space of the card seat and the wall of the filter wall, and the sealing ring of the card is disposed at the connecting corner of the wall of the filtering wall and the positioning lip of the card housing. The filter cartridge is in close contact with the cartridge sealing strip when the filter cartridge is engaged with the slot, and the cartridge sealing strip is located at the filter cartridge and the cartridge chamber positioning lip. between. The nasal mask type respiratory protection device according to claim 4, wherein the lower ring wall comprises a venting wall and a lip buffer wall, and the venting wall is connected to the lip buffer wall. The venting wall is adjacent to the nose portion. The lip buffer wall is worn against a face of the lower lip by a sealing pad. The bottom plate of the yoke is connected to the lower ring wall and is disposed at the vent wall. Between the wall of the lip buffer, the base of the deck is perpendicular to the wall of the lip buffer, the slot being facing the outside of the face. The nasal mask type respiratory protection device according to claim 4, wherein the lower ring wall comprises a venting wall and a lip buffer wall, the venting wall connecting the lip buffer wall. The venting wall is adjacent to the tip of the nose, and the lip buffer wall is worn against a face of the lower lip by a sealing pad, the bottom plate of the card is connected to the tip of the nose, and the bottom of the card is buffered with the lip The wall is vertical and the slot faces the face. The nasal mask type respiratory protection device according to claim 4, wherein the filter cartridge comprises a filter frame and a filter material, and the filter material is disposed in the filter frame, the filter material is The form includes a flat screen, a HEPA type serrated filter screen, a bag filter screen or a gas impermeable plate, and the filter cartridge and the card holder are in the shape of a flat plate or an arc plate. When the card holder is in the shape of an arc plate, the The card seat positioning lip, the card seat sealing strip and the deck bottom plate have a curved shape. The nasal mask-type respiratory protection device according to claim 4, wherein the card holder further comprises at least one insertion hole and at least one buckle hole, the filter cartridge comprising at least one insert and at least one hook The number of the jacks is the same as the number of the inserts, and the number of the buckle holes is the same as the number of the hooks. The insert is inserted into the jack, and the hook is tightly fastened to the buckle hole, so that the filter is closely attached. Fit the card seat seal. The nasal mask type respiratory protection device with a filter cartridge according to claim 1, wherein the lace module further comprises: a tether comprising an adjustment mechanism for adjusting the length of the tether; a second strap fixing member disposed on the upper ring wall of the nasal mask body and adjacent to opposite sides of the nose tip; The sleeve sleeve comprises a sliding portion, at least one fastening hole and a double folding surface, wherein the two folding surfaces are coupled to each other, and the sliding portion and the fastening hole are respectively located on the two folding surface The sliding portion includes a set of connecting holes, a sliding channel and a fixing hole, the sleeve hole is adjacent to the joint of the two folded faces, and the fixing hole is away from the joint of the two folded faces, the socket The hole is communicated with the fixing hole by the sliding passage; wherein the end of the strap is coupled to the fastening hole, and each of the strap fixing members can pass through the sleeve hole and slide through the sliding passage, and then each of the straps The fixing member is limited to the fixing hole, and the folding surface having the fastening hole is parallel to the wearer's face. The nasal mask type respiratory protection device according to the first aspect of the invention, wherein the lacing system further comprises: a second strap fixing member disposed on the upper ring wall of the nasal mask body and adjacent to the tip of the nose On the opposite sides of the portion, the two strap fixing members are planar and extend outwardly on opposite sides, each end of the strap fixing member includes at least one binding hole; and at least one strap passing through the binding The hole is tied and the strap has an adjustment mechanism for adjusting the length of the strap. The nasal mask type respiratory protection device according to claim 3, wherein the exhalation valve comprises an exhalation valve seat, an exhalation flexible cover piece and an exhalation hole, the exhalation hole Provided in the exhalation valve seat, one end of the exhalation flexible cover piece is disposed on one side of the exhalation valve seat, and the other end of the exhalation flexible cover piece is away from the exhalation when the nose exhales The hole, and the air exhaled by the nose is discharged from the exhalation hole through the nasal mask plenum, and the exhalation flexible cover sheet tightly covers the exhalation hole when the nose is inhaled. The nasal mask type respiratory protection device according to claim 3, wherein the exhalation valve comprises an exhalation valve seat, an exhalation flexible cover piece and an exhalation hole, the exhalation hole In the exhalation valve seat, the exhalation hole is round or elliptical, the exhalation flexible cover sheet is round or elliptical, and the center of the exhalation flexible cover sheet is fixed to the exhalation valve a center of the seat, the peripheral portion of the exhalation flexible cover sheet being away from the exhalation hole when the nose exhales, and the air exhaled by the nose is discharged from the exhalation hole through the nasal mask air chamber, when the nose inhales The exhalation flexible cover sheet tightly covers the exhalation hole. The nasal mask type respiratory protection device according to claim 3, wherein the inhalation valve further comprises: an inspiratory flexible cover sheet, and one end of the inspiratory flexible cover sheet is disposed on the through At one of the air holes or at the center, the inspiratory flexible cover sheet is located inside the nasal mask body, and the other end of the inspiratory flexible cover sheet is away from the ventilation hole when the nose is inhaled, when the nose exhales The suction flexible cover sheet tightly covers the vent. The nasal mask type respiratory protection device according to claim 1, wherein the vent hole is a hollow structure, a fence structure or a porous structure.