CN212971737U

CN212971737U - Face protection cover

Info

Publication number: CN212971737U
Application number: CN202020232866.6U
Authority: CN
Inventors: 刘小虎; 刘珺
Original assignee: Shenyang Newtiger Pharmaceutical Technology Development Co ltd
Current assignee: Shenyang Newtiger Pharmaceutical Technology Development Co ltd
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2021-04-16
Anticipated expiration: 2030-03-01

Abstract

The utility model relates to a face protection casing, in particular to removable protective material used repeatedly, can mould the inclosed protection casing of type according to user's facial profile, face protection casing includes oronasal guard shield, cassette and protection casing fixing device, still can have cassette fixing device, once moulds the type before using and can obtain good airtight protecting effect, also can be used for reducing the diffusion of leaking of patient's droplet specially, the utility model discloses compatible all kinds of filtration consumptive material, reduction sanitary rubbish help alleviating the situation that professional protection lacked during emergent, can also have an eye protection structure, provide the integration scheme of eye protection.

Description

Face protection cover

Technical Field

The utility model relates to a face protection casing, in particular to have removable protective material used repeatedly, can individualize the inclosed protection casing of type of moulding.

Background

Because protective equipment such as a mask, an eye protection mask and the like are in a state of being off the market in some emergency situations, many people are forced to select a mask without an anti-virus effect or even use a self-made mask with low protection efficiency due to the fact that the people cannot buy a compliant mask, and the situation is seriously not favorable for prevention and control of all people. Meanwhile, the mask meeting the standard needs quite standard operation to realize better tightness, and the general public can hardly reach the standard by operating each time. In addition, a single mask cannot protect the eye mucosa, and the naked eye carries the risk of spray and contact infection. Meanwhile, a medical staff equips a whole set of face mask, goggles and a KN 95-specification mask, the position relationship of multiple defenders is complex, and secondary pollution risks also exist in the wearing and detaching processes. When the protective materials are in short supply, even though the KN95 mask is not disinfected and reused, the medical staff still has to risk to use repeatedly, and the infection risk of the medical staff at first line is increased. Furthermore, many respiratory tract infection patients have cough symptoms, the surrounding space is polluted, the cough and sneeze are not effectively solved only by publicizing to wear the mask or using tissues to cover the mouth and nose, and the protective clothing which is convenient to wear all the time and can seal and block the spread of droplets has practical significance in epidemic prevention.

Most existing masks do not have enough sealing performance or require that good tightness can be obtained through correct operation every time, repeated use after disinfection is not possible so as to meet the material shortage, professional spray separation protective equipment worn by respiratory disease is not available, and the face protection device which is simple to operate and can be repeatedly disinfected and used at low cost is designed, so that the face protection device has practical value and benefits the nation and people.

Disclosure of Invention

For solving the technical problem, the utility model discloses on referring to the basis of moulding gauze mask, medical gauze mask and protective eyepiece current design firmly, providing a novel facial protection casing, once mould the type and can obtain long-term good airtight result of use, can used repeatedly and compatible all kinds of filtration consumptive materials when the goods and materials are in short supply to can provide eye protection integration technical scheme.

In order to achieve the technical purpose, the technical proposal of the utility model is as follows:

a face shield, as shown in figures 1-1 and 1-2, comprises an oral-nasal shield, a filter sheet and a shield fixing device, wherein at least part of the oral-nasal shield is provided with air-permeable pores, the proportion of all pores of the porous region occupying the area of the membrane (hereinafter collectively referred to as porosity) is in the range of 5-45%, the whole body or edge part of the oral-nasal shield is made of low-temperature thermoplastic material with the thickness of 0.5-5.6 mm, and the shield fixing device is a part which can fixedly attach the molded oral-nasal shield to the oral-nasal face with certain pressure, such as elastic bands, ear hanging shackles, skull clamping fittings and the like. Under the condition that the mouth-nose shield is pre-processed and molded, the low-temperature thermoplastic material membrane at the edge part of the mouth-nose shield is subjected to thermoplastic treatment before use, all edges of the membrane are closely attached to the skin of the mouth-nose face of a user in a softening period, and the personalized closed face protective cover can be obtained after cooling and shaping. If the mouth-nose shield is integrally made of a low-temperature thermoplastic material membrane material and is made of a flat plate material without three-dimensional molding, the middle part of the flat plate is firstly subjected to thermoplastic molding before use, the flat plate can be bulged forwards generally in the softening period of the material to obtain the three-dimensional shape basically conforming to the shield of the mouth and nose of a user, and after cooling and molding, the edge part of the shield is subjected to thermoplastic molding again, so that the whole edge of the shield is closely attached to the skin of the face of the mouth and nose of the user.

The utility model discloses on the oronasal shield of face protection casing, porose region generally is located the middle part, also can only be certain local or irregularly shaped's distribution, and porose region accounts for whole oronasal shield area's proportion generally not less than 11%, and the low temperature thermoplastic material diaphragm of oronasal shield marginal portion is preferred the sclausura, in order to do benefit to comfort and the seal when increasing the use, and the sclausura takes the width to be generally not less than 5 mm. The mouth-nose shield can be further provided with a filter fixing device for locking or unlocking so as to replace the filter, the filter fixing device can be any positioning device suitable for fixing the position of the filter to realize the filtering effect on the mouth-nose shield, the filter fixing device is arranged on the edge of the mouth-nose shield or the edge part of the outer side surface, for example, a plurality of convex structures on the edge of the mouth-nose shield are used, the convex structures are outwards bent and hardened into hooks during thermoplastic characterization, the hooked and fixed filter is attached to all edges of the mouth-nose shield, in addition, the hooks, clamps and the like can be additionally arranged on the mouth-nose shield, or the filter material can be fixed by utilizing the mode of naturally limiting the concave space close to the inner side of the mouth-nose shield under the condition that other contents are used as the filter material (such as a disinfection cotton block), further, the filter fixing device can also be simultaneously or independently arranged at other positions of the inner side surface of the mouth-nose, can meet the requirement of filter plate closed positioning and filter effect. In practical use, when the filter fixing device is arranged on the edge of the oral-nasal shield or the edge of the outer side surface, the joint force between the edge of the oral-nasal shield and the skin provided by the elastic band can be used for assisting in positioning, and the tightness of the edge of the oral-nasal shield can be enhanced. The utility model discloses after facial protection casing installs the cassette additional, the cassette can cover oral-nasal guard shield medial surface completely, or can airtight cover the gas passage between porose region and the oral-nasal part on the oral-nasal guard shield completely at least to guarantee the air current that effective filtration passes through.

The utility model discloses the filter plate is visual to aim at the scene of using and adopts individual layer or combination filtration scheme, and professional filtration materials such as preferred medical rank polypropylene fiber material melt-blown cloth can also install waterproof material additional in the clearance between filter plate and the oral-nasal shield and promote protection efficiency, also can adopt combined material according to different scene of using, like any available filtering material, active carbon package and biochemical protection material etc. still can directly spray on old gauze mask, disinfection gauze or the general fabrics of making interim emergent filtration protection with disinfection protection medicament such as alcohol under the emergent situation. The filter disc can also be provided with a structure suitable for fixing, such as a magic tape or an independent adhesive strip corresponding to the mouth and nose shield, or a small hole for sleeving and embedding a hook, and the like, and the requirement of filter disc sealing positioning and filter effect can be met.

Further, the thickness of the low-temperature thermoplastic material membrane can preferably range from 1.2mm to 2.0mm, and the porosity of the empty part on the mouth-nose shield can preferably range from 8% to 18%, so that a better performance balance scheme can be obtained in the aspects of portability, impact resistance and splashing prevention.

In the case of a respiratory tract infection patient requiring the prevention of the spreading of droplets such as coughing or sneezing, the porous low-temperature thermoplastic material membrane of the mouth-nose shield part can be preferably thicker in the 1.6mm to 2.4mm specification, and has a porosity range of 30% to 45% with better air permeability, and is specially prefabricated into a three-dimensional mask profile with larger inner cavity capacity. Therefore, even under the condition that a patient frequently sneezes and coughs, the leakage of pathogenic droplets can be effectively reduced, the isolation and epidemic prevention efficiency is improved, and the patient only needs to timely and simply replace the filter or the disinfecting cotton block for assisting in plugging in the inner cavity of the mouth-nose shield.

In some cases where the total amount of shield is not intended but the stiffness is more important, the thickness of the low temperature thermoplastic membrane may preferably be in the range of 2.4mm to 3.2mm, the porosity of the empty part of the oronasal shield may preferably be in the range of 20% to 30%, or the porosity value of 5% to 20% may still be selected to suitably enhance the anti-splash protection. When special physical properties (such as strong support or large extension effect) are required, a thick film material of 3.2mm to 5.6mm can be selected, and in this case, the design scheme of pre-processing to complete basic molding is preferably considered.

Taking a flat-plate type oral-nasal shield without a filter as an example, the facial shield of the utility model is firstly immersed into hot water of 60-80 ℃ for softening before being used, lifting and fitting the mask to the mouth, nose and face of a user or using an article as a mold to form a shape with a middle part protruding forward moderately and naturally cooling, hardening and shaping, namely obtaining a three-dimensional cover body suitable for protecting the mouth and nose of a user, then soaking the edges of the mouth and nose shield into hot water at the temperature of 60-80 ℃ again for softening, lifting and covering the mouth and nose face of the user, and the edges of the mouth and nose shield are properly pressed by hands to ensure that the mouth and nose shield fits the skin of the corresponding positions such as the nose bridge and the skins of the two sides, the two cheeks, the lower jaw and the like without clearance, and the personalized three-dimensional protective shield body which covers the mouth and nose part of a user and is tightly sealed with the skin of the corresponding position at all the peripheral edges is obtained after natural cooling and hardening. For the mouth and nose shield which is prefabricated and is molded in a three-dimensional way, only the thermoplastic molding step of the edge part is needed. On the basis, the utility model discloses facial protection casing when using each time, can disinfect the oronasal guard cover at first, then install removable cassette additional, the laminating is in user oronasal face and has taken protection casing fixing device, just can realize having the protection of individualized seal performance.

Use the utility model discloses during facial protection casing, the user breathes the air current and passes in and out and can not leak into or spill by the guard shield edge through the fine and close aperture business turn over on the guard shield, therefore the filter element can the filter effect of full play filter element, uses the sterilization of disinfectants such as medical alcohol to protect the guard shield and change the filter element and can obtain individualized airtight protection repeatedly after the use. Whether the basic three-dimensional shape is preprocessed or not before the mouth-nose shield is used is determined according to actual use requirements, the method that the preprocessing and molding scheme is adopted under the application scene of the public or patients and only the edges of the face shield need to be molded in a personalized mode is convenient and efficient, and an unmolded flat plate, various shapes, different thicknesses, and a combination of a porous membrane and a non-porous membrane can be adopted to meet various special requirements.

Further, facial protection casing can also add an eye-protection structure on the basis, and nose guard shield upper portion even has an eye-protection structure promptly, including sealed limit and transparent goggles, eye-protection structure can cover peripheral temples of two side eye sockets, forehead position completely. The sealing edge of the eye protection structure can be an elastic silica gel sealing strip or a sealing edge strip made of a low-temperature thermoplastic material membrane without holes, and the periphery of the transparent goggles and the sealing edge are combined without gaps to form a three-dimensional eye shield together. Under the condition that the sealing edge of the eye protection structure is made of a nonporous low-temperature thermoplastic material film material, the sealing edge part is softened by hot water and is attached to the periphery of eyes of a user for cooling and molding in the first starting process, the forehead, the double temples, the lower eye orbits on the two sides, the nose bridge and the like corresponding to the sealing edge of the nonporous low-temperature thermoplastic material film at the edge of the eye protection structure are properly pressed to be completely fit without gaps, and then the eye protection structure is naturally cooled and hardened to obtain an independent closed eye protection structure which is three-dimensionally closed with the periphery of the eyes of the user.

The utility model discloses facial protection casing technical scheme's beneficial effect is outstanding. Because the low-temperature thermoplastic material adopted at the joint part is easy to mould and can be repeatedly used after being moulded once, when the user is unsatisfied with the mould or needs to adjust the mould after using, the user can obtain the good sealing protection effect which can be repeatedly used in a personalized one-time mould, and the method is very simple and convenient. Therefore, the utility model discloses facial protection casing can reduce the risk of improper wearing gauze mask, can effectively reduce the risk that pollutes the unexpected splash of liquid and infect, can compatible all kinds of filtration consumptive materials and do benefit to and reduce the sanitary waste total amount, it is practical, the daily life protection scheme of low consumption, especially, be fit for the social public and protect the use during continuous epidemic prevention, can also regard as the special protective equipment that effectively prevents respiratory track disease droplet and leak the propagation outward, special period does benefit to and avoids public reposition of redundant personnel professional medical protection resource, when professional protection material is deficient, can provide emergent protection for an ray of medical personnel temporarily, in addition eye protection integration technical scheme.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the various views.

FIG. 1-1 is a design drawing of the outer side of the face shield of the present invention;

fig. 1-2 are inner side design views of the face shield of the present invention;

fig. 2 is a front view (outer side surface) of a first embodiment of the present invention;

fig. 3 is a top view of a first embodiment of the present invention;

fig. 4 is a top view of a first embodiment of the present invention (in a state where no filter is installed);

FIG. 5-1 is a design drawing of the outer side of the face shield with goggles according to the second embodiment of the present invention before molding;

FIG. 5-2 is a design drawing of the inner side surface of the face shield with goggles according to the second embodiment of the present invention before molding;

FIG. 6 is a front view (outer side) of a second embodiment of the present invention after the face shield with goggles is molded;

FIG. 7 is a right side view of a second embodiment of the present invention after a face shield with goggles has been molded;

reference numerals:

1-oronasal shield; 2-a filter fixing device; 3-a filter disc; 4-elastic band; 5-eye protection structure; 6-a goggle lens; 7-non-porous low temperature thermoplastic material film.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical solution of the present invention is further illustrated by the following different embodiments:

the first embodiment is as follows:

a face protection cover is shown in figures 2, 3 and 4 and comprises an oral-nasal shield 1, a filter fixing device 2, a filter 3 and elastic bands 4, wherein the oral-nasal shield is made of a porous and breathable low-temperature thermoplastic material membrane, the oral-nasal shield 1 is preprocessed into a three-dimensional mask shape when a KN95 mask is used, the edge of the oral-nasal shield is provided with the filter fixing device 2 for fixing the filter 3, the filter 3 is attached to all inner edges of the oral-nasal shield 1 under the condition that the filter 3 is locked by the filter fixing device 2, and the end points of the elastic bands 4 are respectively fixed at four corners of the edge of the oral-nasal shield 1.

The mask 1 of the present embodiment is mainly made of a porous membrane made of polyurethane low-temperature thermoplastic material with melting point of 50-70 ℃, the porosity is 12%, and the thickness is 1.6mm, the membrane at a portion of about 12mm of the peripheral edge of the porous membrane made of low-temperature thermoplastic material of the mask 1 has no small holes, and the filter fixing device 2 is a set of partially extending protruding structures of the low-temperature thermoplastic material of the mask 1, as shown in fig. 3, the protruding structures have sizes of 6mm × 3mm, and are eight in total, and are respectively located at eight points 10mm-13mm away from the corner points on the outer edge of the four sides of the mask 1. In the process of softening the edge of the mouth-nose shield 1 with hot water and then molding the back veneers, when the material is not completely hardened, the group of protruding structures are bent forwards one by one to obtain small hooks with eight sites after being hardened, and the small holes at corresponding positions on the filter plate 3 are hooked on the corresponding small hooks before use to realize the fixing effect. When the face protective cover is used, the filter 3 also has the effects of blocking a gap generated by the movement or speaking of a user and maintaining the tightness by means of the pressing force between the edge of the mouth-nose protective cover 1 and the skin generated by the elastic band 4.

The filter 3 of this embodiment is made of polypropylene fiber with a diameter of 0.5-10 μm, a layer of waterproof woolen cloth pressed on the outer surface and a layer of pure cotton gauze pressed on the inner surface, and is a rectangular cloth sheet with a diameter of 170mm × 220mm when completely laid and unfolded, the inner sides of the four sides of the filter 3 have eight round holes with a diameter of 3mm, the centers of the round holes are respectively located at eight sites 10mm away from the inner sides of the four corner end points by 20mm, when in use, the round holes can be respectively hooked on eight small hooks of the filter fixing device 2 at corresponding positions to fix the filter 3, and the fixed pure cotton gauze is attached to one side of the oral and nasal skin when in use. The two sides of the central point of the filter 3 are provided with two folding structures with the thickness of 10mm, which are similar to the middle part of the medical surgical mask, so that the filter can better obtain the comfortable effect of swelling when in use.

Example two:

a face protection cover, as shown in figure 5, comprises a mouth and nose shield 1, a filter fixing device 2, a filter 3, an elastic band 4 and a eye protection structure 5, wherein the eye protection structure 5 is a connecting component extending upwards from the upper edge of the mouth and nose shield 1, the embodiment selects a polycarbonate three-dimensional plastic type eye protection lens 6 with heat resistance over 230 ℃ to be combined with a non-porous low-temperature thermoplastic material membrane 7 with peripheral width over 15mm in a non-clearance way to form an eye protection structure 5, the transparent eye protection lens 6 corresponding to the positions of eyes during normal wearing of the face protection cover of the utility model, the non-porous low-temperature thermoplastic material membrane 7 can completely cover the peripheral temples of both sides of the eye sockets, the forehead and all the lower edge positions of the eye protection lens 6, the non-porous low-temperature thermoplastic material membrane 7 connected with the lower edge of the eye protection lens 6 is integrated with the porous low-temperature thermoplastic material membrane on the upper, the mouth and nose shield 1 at the lower part and the eye-protecting structure 5 at the upper part jointly form the front protecting structure of the face protecting cover.

The membrane 7 of the imperforate low-temperature thermoplastic material connected with the lower edge of the goggles 6 and the perforated low-temperature thermoplastic material membrane on the upper edge of the mouth-nose shield 1 are the same low-temperature thermoplastic material membrane which is not partially perforated, the whole thickness is 2.0mm, except the goggles, the membrane is a rectangular flat plate with the whole size of 230mm 180mm before being used, the porosity of the perforated part with the lower area of 130mm 180mm is 5%, the porosity of the imperforate part with the upper area of 100mm 180mm is 0%, the lower edge and the left and right sides of the membrane are provided with filter fixing devices 2, the filter fixing device 2 is a group of six stainless steel hooks with the diameter of 1mm and the height of 3mm, two of the hooks are respectively positioned at the position points of the lower edge, which are 10mm away from the end points of the left and right lower corners, and the other four hooks are respectively positioned at the position points of the left and right edges, which are 10mm away from the end points of the lower corners and 130mm away from the end points of the lower corners. The end points of the three groups of elastic bands 4 are respectively fixed on the upper end, the lower end and the middle point of the two side edges of the mask at three equidistant stress points.

The material is selected to this embodiment filter 3 and is the melt-blown fabric that polypropylene fiber diameter is 0.5-10 microns, be 170mm 220 mm's rectangle cloth piece when filter 3 tiles, filter's lower limb inboard and the inboard total six diameter 3 mm's of both sides round hole about with, wherein the centre of a circle of two round holes is located respectively on the lower limb, the inboard 10mm department of the position of 20 mm's of lower corner extreme point about the distance, the centre of a circle of other four round holes is located respectively on both sides about, the position of 20 mm's of lower corner extreme point about the distance and the inboard 10mm department of 160 mm's position, the round hole can be in order to fix filter 3 on six corresponding little hooks of filter fixing device 2 when using by the hook. The rectangular cloth piece of the filter sheet 3 can be folded by 10mm portions on both sides of the center point before use, so that the rectangular filter sheet 3 with the appearance size of 150mm by 220mm is obtained, and the folded portion can obtain a bulging comfort effect when in use.

Before practical application, the technical scheme of the embodiment is that firstly, the face protective cover without the filter sheet 3 is wholly immersed in hot water of 60-80 ℃ for softening and then taken out, the face protective cover is integrally attached to the face of a user according to the position of wearing the face protective cover to obtain the shape of a mask with a proper raised mouth and nose part, then the nose bridge and the cheekbones at two sides are fixed by one hand to fix the middle of the face protective cover for shaping the middle partition belt, meanwhile, the lower jaw, two cheeks, double temples, the forehead and the like are properly pressed by the other hand until the three-dimensional hardening and shaping of the mouth and nose part and the closed edge are completed, in this case, the forehead part, the double temples, the lower eye sockets at two sides, the nose bridge and the like corresponding to the non-porous low-temperature thermoplastic material membrane at all the edge parts of the eye protective structure are well attached, after cooling and hardening, two, the lower half can be realized to the independent inseparable parcel of oronasal face of face protection casing, the independent technique effect to the inseparable parcel of eye of upper half, and the user breathes the air current and neither can leak into or spill, also can not leak into the formation fog of goggles and influence visual effect from oronasal guard edge. Fig. 6 and 7 are effect diagrams after the molding is completed in the present embodiment.

To the above technical solution disclosure and the embodiments of the present invention, it is intended to enable those skilled in the art to understand and implement the technical solution of the present invention, and it is not intended that the present invention is limited to only the text or the embodiments. In fact, it will be apparent to those skilled in the art that various additions, substitutions and modifications can be made to the details and modes of implementation based on the basic principles of the present invention. Therefore, the protection scope of the present invention should be understood as the maximum scope similar or equivalent to the technical principles and construction features disclosed herein.

Claims

1. The utility model provides a face protection casing, includes oronasal guard shield, cassette and protection casing fixing device, and it has ventilative aperture, its characterized in that to have at least some regions on the oronasal guard shield: the proportion of the perforated area on the oral-nasal shield to the whole area of the oral-nasal shield is 11-100%, the porosity of the perforated area is 5-45%, and the whole or edge part of the oral-nasal shield is made of a low-temperature thermoplastic material membrane with the thickness of 0.5-5.6 mm.

2. The face shield of claim 1, wherein: the thickness of the low-temperature thermoplastic material membrane ranges from 1.2mm to 2.0mm, and the porosity of the empty part on the oral-nasal shield ranges from 8 percent to 18 percent.

3. The face shield of claim 1, wherein: the thickness of the low-temperature thermoplastic material membrane ranges from 1.6mm to 2.4mm, and the porosity of the empty part on the oral-nasal shield ranges from 30 percent to 45 percent.

4. The face shield of claim 1, wherein: the thickness of the low-temperature thermoplastic material membrane ranges from 2.4mm to 3.2mm, and the porosity of the empty part on the oral-nasal shield ranges from 20 percent to 30 percent.

5. A face shield according to any one of claims 1 or 2 or 3 or 4, wherein: the mouth nose guard shield is provided with a filter fixing device, the filter fixing device is a group of protruding structures or a group of hooks or a group of clamps or other positioning devices which are positioned at the edge part of the outer side surface of the mouth nose guard shield, and the filter can be arranged on the mouth nose guard shield through the filter fixing device.

6. A face shield according to any one of claims 1 or 2 or 3 or 4, wherein: the filter disc is provided with a fixing device which is a group of sticking materials or a group of hooks or a group of clips or other positioning components for sticking or hooking the filter disc on the mouth and nose shield.

7. A face shield according to any one of claims 1 or 2 or 3 or 4, wherein: the upper part of the mouth-nose shield is connected with an eye protection structure, and the eye protection structure comprises a sealing edge and transparent goggles.

8. The face shield of claim 7, wherein: the sealing edge of the eye protection structure is made of a non-porous low-temperature thermoplastic material film.