CN211835888U - Protective mask - Google Patents

Abstract

The utility model discloses a protective mask, it includes: the head part is crossed and fixed with the bracket; the head elastic fixing band is used for sleeving the head part; the annular gas pipeline is connected with the head elastic fixing band in a lap joint mode, and a gas jet orifice which is obliquely downward is continuously formed in the gas pipeline; the air source connecting pipeline is used for conveying filtered air to the air pipeline; an eye protection cover positioned at the inner side of the annular gas pipeline; and the surface screen is positioned on the outer side of the annular gas pipeline. The utility model discloses can reduce, prevent that respiratory tract infection patient from infecting medical staff, alleviate medical staff's serious uncomfortable sense of wearing protective articles for use for a long time greatly.

Description

Protective mask

Technical Field

The utility model belongs to the field of medical equipment, a protective face mask is related to, especially relate to a protective face mask with aseptic air current erodees facial function.

Background

Since 2003, with the emergence of epidemic infectious diseases seriously harming human health, such as infectious atypical pneumonia (SARS), avian influenza, Ebola virus, influenza A, and novel coronavirus pneumonia COVID-19, how to effectively prevent and control respiratory infectious diseases and eliminate cross infection in time has become a focus of attention of all countries in the world. The transmission routes of respiratory infectious diseases mainly include respiratory droplet transmission, contact transmission, fecal oral transmission, aerosol and the like. In the process of treating patients with infectious diseases via respiratory tract, medical staff at least need to wear protective glasses, face screens or positive pressure headgear to prevent body fluid and blood from splashing and being exposed to infectious aerosol environment. Respiratory infectious microorganisms pose a great challenge to the protection of medical personnel, and many medical personnel are infected or even dead in the course of the past large-scale infectious disease epidemic, for example, the tragedy of a large number of medical personnel infected and many doctors dead occurs in the Wuhan hospital in the novel coronavirus pneumonia COVID-19. The critical patients with respiratory infectious diseases still need operations such as tracheal intubation, tracheotomy, sputum aspiration and fiberbronchoscope, and these operators require good visual field to ensure medical safety and inevitably face huge infection risks.

At present, the main measures for clinically dealing with the infection risk of the diseases are to strengthen the protection of medical care personnel, including wearing isolation clothes, wearing an N95 mask, wearing protective glasses, protecting a face screen or a positive pressure ventilation headgear and the like. In the treatment process of the novel coronavirus pneumonia COVID-19, comprehensive measures are often adopted, including use of a negative pressure ward, a protective suit, an N95 mask, goggles/splash-proof face screens/positive pressure ventilation headgear and the like. Wherein the existing face protection tools comprise goggles, splash-proof face screens, positive pressure ventilation headgear and the like. The functions are different and have limitations, such as:

1. goggles (blue) are made of transparent plastics, are fixed on the head by elastic bands, are provided with soft silica gel at the fitting parts, are well fitted on the eyes, but are easy to fog, influence the visual field, are poor in wearing comfort and cannot prevent body fluid from splashing to the face.

2. The goggles (colorless) are made of hard plastics, the elastic band is fixed, the side face is provided with the air holes, the eye part and the face are poorly attached, the goggles are easy to fog, the wearing comfort is poor, body fluid cannot be prevented from splashing to the face, and aerosol cannot be prevented from entering the periphery of the eye part.

3. The splash-proof face screen is colorless, made of hard plastics, the forehead of the splash-proof face screen is provided with a sponge strip which is attached to the face, and the elastic band is fixed on the head, so that the splash-proof face screen is comfortable, slightly fogged, good in visual field and capable of preventing body fluid from splashing on the front side, but can not block aerosol and can not effectively protect the lower part of the face mask;

4. the positive pressure ventilation headgear (3M) is in a headgear style, is provided with a head fixing device, hard transparent plastic in front and waterproof soft material, covers the shoulders in a cloak shape, is externally connected with a filtering air source, has good protection effect, is protection in high risk operation commonly adopted in the current negative pressure ward, and can be repeatedly used after being sterilized; but the feeling of suffocation is obvious when the health care pillow is used, the visual field is obviously narrowed, the operation and communication are influenced, and the health care pillow is not suitable for being worn for a long time.

These face protection appliances have the following disadvantages: the positive pressure protective mask has the best protective performance, but is complex to wear, poor in comfort, and not suitable for being worn for a long time, and the visual field and speech communication are influenced; protective glasses are easy to fog, have poor wearing comfort, and can not effectively prevent a mask from being polluted by splashing and blocking aerosol pollution; the protective face screen is simple and easy to obtain, disposable, wide in visual field, still has the problem of fogging and has poor protective performance.

The Shanghai public health clinic center is a main hospital in Shanghai city for treating new coronary pneumonia patients. As a first-line clinician, the inventor feels in the heavy medical treatment, the protective tool is extremely uncomfortable after being worn for a long time, the impression is obvious, the skin recovery time is long, the protective tool is bitter and unbearable, the physical and mental fatigue is caused, and the wearing feeling of resistance and conflict is generally existed. Therefore, there is a need in the clinic for a protective device which can prevent respiratory tract infection patients from infecting close medical staff through airways, avoid nosocomial cross infection, alleviate wearing discomfort and reduce physiological and psychological burdens.

SUMMERY OF THE UTILITY MODEL

In order to ensure that medical staff are not infected by respiratory tract infectious patients, based on the idea of separating and simultaneously considering the operation person and the patients, the inventor designs and manufactures the protection device which has a simple structure and can obviously relieve the serious discomfort caused by the fact that the medical staff wear the protection article for a long time as a doctor who has years of clinical practice experience and is struggling against the epidemic prevention front line. Particularly, the utility model discloses a following technical scheme.

A protective mask, comprising: the head part is crossed and fixed with the bracket; the head elastic fixing band is connected with the lower end of the head cross fixing bracket and used for sleeving the head of the hoop; the annular gas pipeline is connected with the head elastic fixing band in an overlapping mode, and an obliquely downward gas jet orifice is continuously formed in the gas pipeline and used for jetting filtered air flow to the lower portion and the outer side of the head; the air source connecting pipeline is communicated with the air pipeline and is used for conveying filtered air to the air pipeline; an eye protection cover positioned at the inner side of the annular gas pipeline; and the face screen is positioned on the outer sides of the eye protection cover and the annular gas pipeline.

The gas pipeline can be a plastic pipe, such as a transparent plastic hose, or a rigid plastic pipe. The jet openings arranged on the gas pipeline can be round holes or conical small holes, and the number of the jet openings is 10-20, such as 12-18, 14-17 or 15-16. Through the jet orifice output air current that sets up in succession on annular gas pipeline, can form a round protectiveness and filter the air curtain, wash the face of wearing person and neck, do not keep the dead angle.

Alternatively, the gas pipeline may be provided with the jet ports only at the corresponding section of the panel to form a forehead portion jet air pipeline.

In a preferred embodiment, the eye protection mask is of a concave design, and has a nose opening for fitting the mask. The eye protection cover can be made of transparent plastic, and preferably elastic transparent plastic.

Above-mentioned protective mask can be provided with the laminating sponge in the contact position of forehead portion and eye safety cover for avoid producing the skin indentation, and prevent the overhead air to get into and cause the infection in the face guard.

The face screen is preferably designed in an arc shape and can be made of transparent plastics, and preferably elastic transparent plastics.

The head cross fixing bracket can be crossed and made of plastics.

Preferably, the above-mentioned face shield may further comprise a crown fixing buckle at the top end of the head cross fixing support for tightening or loosening the head cross fixing support according to the size of the head of the wearer so as to change the size of the head cross fixing support. The crown clasp may be made of plastic.

In one embodiment, the protective mask further comprises fixing buckles erected on the gas pipelines of the frontotemporal parts at two sides for installing and fixing the eye protective cover and the face shield. The retaining buckle may be made of plastic.

Preferably, the one-side fixing buckle can be provided with an adjusting knob for adjusting the shapes of the eye protection cover and the face screen. The adjustment knob may be made of plastic.

The air source connecting pipeline is usually positioned at the back part of the brain and can be a transparent plastic hose. The other end of the air source connecting pipeline can be matched with the existing portable filtering air source, the application range is enlarged, and the air source connecting pipeline can also be connected with an oxygen input port or an oxygen bottle in a ward. And an input gas regulating valve is preferably arranged on the gas source connecting pipeline. The input gas regulating valve is a device for regulating the flow of gas in the hose, and achieves the purpose of regulating the flow by regulating the cross section of the hose passing through the input gas regulating valve. Preferably, the inlet gas regulating valve is made of rigid plastic.

The face shield may further include a source pressure display mounted on the gas line, preferably on the opposite side of the adjustment knob.

The gas source pressure display can use the gas pressure display of the prior art, and comprises: a rectangular parallelepiped housing support; the cylindrical airflow channel is marked with scale marks and is made of hard transparent plastic; an air source pressure indicating ball (or pressure floating ball) is placed in the cylinder, and is preferably made of colored rubber with striking color, such as red or black rubber ball.

Preferably, the protective mask further comprises a mandible elastic fixing band (or called neck fixing elastic band), and two ends of the mandible elastic fixing band are respectively fixed on the fixing buckles of the two lateral frontotempositions, so as to improve the wearing firmness of the protective mask.

The utility model discloses a protective mask is that the structure is simple and easy, can block the air jet formula isolation protective mask that respiratory infectious disease infects, is fit for wearing for a long time, can not arouse uncomfortable sense, avoids being difficult to eliminate the physiology awkwardness and the psychological injury of "hero's facial makeup" for a long time after work at every turn.

Drawings

Fig. 1 is a schematic front view of a protective mask according to an embodiment of the present invention.

Fig. 2 is a right side profile schematic view of the protective mask embodiment of fig. 1.

Fig. 3 is a schematic left side profile view of the embodiment of the face shield shown in fig. 1.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments and not all embodiments of the present application; and the structures shown in the drawings are merely schematic and do not represent actual objects. It should be noted that all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the protection scope of the present application.

The utility model discloses a protective mask is a medical protection casing, has clean air and sweeps the function, and the jet that sets up in succession on the pipeline through cyclic annular gas exports clean air current, forms round protective air curtain, erodees person's face and neck of wearing, does not keep the dead angle. Utilize the utility model discloses a protective face mask not only can effectively prevent medical staff from infecting, and more importantly can not make facial skin surface produce the indentation, can not form steam aerial fog, produce the sweat in face and neck portion.

For simplicity of description, the term "face shield" is sometimes referred to herein simply as "shield" or "face shield," which are intended to have the same meaning and may be used interchangeably.

The utility model discloses a double-deck isolation protective mask passes through the air current and sprays, for medical personnel provide safe, comfortable, long-time respiratory protection, reduces the infection risk. The clean air flow reduces or eliminates fogging in the mask. By adopting the design of fitting the face, a good visual field is provided, so that medical staff can clearly observe the visual field, and the medical safety is ensured. Meanwhile, the mask can be prevented from falling off in a firm and comfortable wearing mode, so that secondary pollution is avoided. The unidirectional jet air flow scours between double-layer face masks (namely the eye protection covers and the face screens) to prevent aerosol inhalation, and is suitable for airway protection of respiratory infectious diseases including novel coronavirus (COVID-19).

Referring to fig. 1, 2 and 3, the protective mask 100 of the present invention mainly includes: the head is crossed and fixed with the bracket 2; a head elastic fixing band 12 connected with the lower end of the head cross fixing bracket 2 and used for sleeving the head part; an annular gas pipeline 13 lapped with the head elastic fixing band 12, wherein the gas pipeline 13 is continuously provided with a gas jet orifice 7 which is obliquely downward and is used for jetting filtered air flow to the lower part and the outer side of the head; a gas source connecting line 19 communicated with the gas line 13 for supplying filtered air to the gas line 13; an eye protection cover 8 located inside the annular gas duct 13; a face screen 10 located outside the eye protection shield 8 and the annular gas duct 13.

The terms "comprises," "comprising," or any other variation thereof, herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. As will be appreciated by those skilled in the art. These components are described separately below.

The gas pipe 13 is annular, and may be a plastic pipe, such as a transparent plastic hose, or a rigid plastic pipe. The jet ports 7 continuously formed on the gas pipeline 13 can be round holes or conical small holes, and the number of the jet ports 7 is 10-20, such as 12-18, 14-17 or 15-16. The air flow is sprayed out through the spray ports 7, a protective air filtering air curtain can be formed below the air pipeline 13, the face and the neck of a wearer are washed, no dead angle is left, and external air is blocked from entering the respiratory tract of the wearer.

In another alternative embodiment, the gas pipeline may be provided with the jet ports 7 only at the front section, i.e. the corresponding section of the panel 10, so as to form the forehead portion jet air pipeline 17.

Eye safety cover 8 and face screen 10 are twice isolation layers, and through the annular gas pipeline 13 jet stream of pressing from both sides in the centre, effectively avoid producing the fog because of perspiring at the eyes position and influence the work field of vision, this air current layer still has the cooling effect, restraines perspiring.

Protective mask 100 can be provided with laminating sponge 16 at the contact position of forehead and eye safety cover 8, fills up between forehead and eye safety cover 8, avoids eye safety cover 8 direct contact oppression skin and produces the indentation to can also prevent that overhead air from getting into the infection risk in eye safety cover 8. The conformable sponge 16 may pass through the gas line 13.

In one embodiment, eye protector 8 is concave in shape with a nose opening to fit a mask (not shown). The eye protection cover 8 can be made of transparent plastic, preferably elastic transparent plastic, and can be deformed moderately.

The panel 10 may be of conventional shape, preferably of arcuate design, and may be made of transparent plastic, preferably of elastic transparent plastic, which is suitably deformable.

The face shield 100 preferably further comprises a crown fixing buckle 1 located at the top of the head cross fixing support 2, and used for tightening or loosening the head cross fixing support 2 according to the size of the head of the wearer, so as to change the size of the head cross fixing support 2 and ensure the wearing firmness and comfort. The crown clasp 1 may be made of plastic.

The face shield 100 may further include fasteners 14, 5 mounted on the two frontotemporal air lines 13 for attaching and securing the eye protective cover 8 and the face shield 10. The left and right retaining buckles 14, 5 may be made of plastic.

Preferably, an adjusting knob 15 may be provided on the one side fixing buckle 14 for adjusting the shapes of the eye protection cover 8 and the face screen 10 to perform deformation by appropriately tightening/loosening the arc. The adjustment knob 15 may be made of plastic.

The air supply connection 19 is typically located at the back of the wearer's head and may be a clear plastic hose. The other end of the air source connecting pipeline 19 can be matched and connected with the existing portable filtering air source (not shown) so as to increase the application range; an oxygen inlet port or an oxygen cylinder (not shown) in the ward may be connected.

The terms "connected" or "overlapped" as used herein may be movably or fixedly connected, and may be determined according to the specific function of the components.

Preferably, an input gas regulating valve 18 is provided on the gas source connecting line 19. The inlet gas regulating valve 18 is a device for regulating the flow rate of gas in the flexible tube 19, and the purpose of regulating the flow rate is achieved by regulating the size of the cross section of the flexible tube 19 passing therethrough. Preferably, the inlet gas regulating valve 18 is made of rigid plastic.

The protective mask 100 may also include a source pressure display 3 mounted on the gas line 13, preferably with the source pressure display 3 on the opposite side from the adjustment knob 15.

The gas source pressure display 3 may use a gas pressure display of the prior art, including: a rectangular parallelepiped housing support; the cylindrical airflow channel is marked with scale marks and is made of hard transparent plastic; an air source pressure indicating ball 4 (or pressure floating ball 4) is arranged in the cylinder, and the air source pressure indicating ball 4 is preferably made of colored rubber with a striking color, such as a red or black rubber ball 4.

In addition, in order to further improve the wearing firmness of the protective mask 100, the protective mask 100 may further include a mandible elastic fixing band 9 (or neck fixing elastic band 9), both ends of which are respectively fixed on the fixing buckles 14 and 5 of the two lateral frontotemponents.

The protective mask 100 is comfortable and firm to wear, and the materials used are cheap and easy to obtain, and easy to process, so that the cost is low and the manufacture is easy. The disposable protection bag is disposable, so that the disinfection link and the probability of secondary pollution are reduced, and the protection bag is particularly suitable for protection of large-scale high-infectivity diseases.

The protective mask 100 of the present invention has been described in detail, and the above description of the embodiments is only provided to help understanding the inventive concept of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather that the principles of the invention are described in the above embodiments and the description, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A protective mask, comprising: the head part is crossed and fixed with the bracket; the head elastic fixing band is connected with the lower end of the head cross fixing bracket and used for sleeving the head of the hoop; the annular gas pipeline is connected with the head elastic fixing band in an overlapping mode, and an obliquely downward gas jet orifice is continuously formed in the gas pipeline and used for jetting filtered air flow to the lower portion and the outer side of the head; the air source connecting pipeline is communicated with the air pipeline and is used for conveying filtered air to the air pipeline; an eye protection cover positioned at the inner side of the annular gas pipeline; and the surface screen is positioned on the outer side of the annular gas pipeline.

2. A protective mask according to claim 1, further comprising a crown retainer clip at the top of the head cross-over retainer bracket.

3. A face shield according to claim 1, further comprising fasteners mounted on the gas lines on the lateral frontotemponents for attaching and securing the eye shield and the face shield.

4. A face shield according to claim 1, wherein the one side fastener is provided with an adjustment knob for adjusting the shape of the eye protection shield and the face shield.

5. A protective mask according to claim 1, wherein a conformable sponge is provided at the contact portion of the forehead portion and the eye protector.

6. A face mask according to claim 1, wherein the gas source connecting line is a transparent plastic hose at the back of the brain, and an input gas regulating valve is provided on the gas source connecting line.

7. A face mask according to claim 1, further comprising a source pressure display mounted on the gas line.

8. A protective mask according to claim 1, further comprising elastic mandibular fixation straps, both ends of which are fixed to the lateral frontotemporal fixation buckles, respectively.

9. A protective mask according to claim 1, wherein the head cross-over attachment brackets are criss-cross and are made of plastic.

10. A face shield according to claim 1, wherein the eye protection mask is of concave design, has a nose opening and is made of transparent plastic.

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