Bucking airflow control filter cover

Abstract

A bucking airflow control filter cover belongs to protective medical supplies and is used for controlling and filtering bucking airflow of a patient when a bronchoscope enters an airway through a nasal cavity for diagnosis and treatment. The mask comprises a mask body (2), a veneering layer (1), a water absorption layer located between the mask body (2) and the veneering layer (1) and the like. The veneering layer and the water absorption layer are connected and provided with airflow ports, and the veneering layer above the airflow ports is matched with the upper lip of a wearer. When the mask is used, bucking airflow enters the control bag which is composed of the veneering layer and the mask body and has the airflow flowing limiting and filtering functions through the airflow opening, the pressure in the bag is increased, the veneering layer is forced to be attached to the face more tightly, airflow leakage gaps are eliminated, and the bucking airflow can only be diffused after being filtered. In addition, the device further comprises a shielding part capable of shielding the eyes of the patient. The device can limit the flowing range of bucking airflow and effectively filter the bucking airflow, can adsorb saliva and the like, and solves the problems that the bucking airflow leaks and cannot be effectively filtered, and saliva flowing needs to be wiped.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of protective medical products, and particularly relates to a filter cover for controlling the flow of coughing airflow of a patient and effectively filtering the airflow during the process of bronchoscope entering the airway through the nasal cavity. BACKGROUND

[0002] With the development of medical science and technology, the application of the bendable bronchoscope in the clinic has been very popular. When the bronchoscope enters the airway through the nasal cavity, the patient often coughs due to the mechanical stimulation of the bronchoscope. The coughing airflow of the patient carrying respiratory tract secretions and droplets directly sprays to the operating doctor, causing direct pollution to the face and chest of the doctor. Since the airway secretions and airflow droplets of such patients may carry pathogenic microorganisms, the coughing of the patient not only causes direct pollution to the body surface of the medical staff, but also carries pathogenic microorganisms in the airflow droplets, which can be suspended in the air for a long time, endangering the health and safety of the medical staff, and at the same time, polluting the medical environment and increasing the risk of nosocomial infection. In addition, during the bronchoscope examination, the oral secretions of most patients increase, and saliva continuously flows out, which needs to be wiped at any time, affecting the normal diagnosis and treatment, and the paper towels wiping the saliva are often discarded at will, which may carry pathogenic microorganisms and also pollute the examination environment. Another problem is that during the bronchoscope diagnosis and treatment, injection of flushing liquid and liquid drugs is often required, and sometimes liquid overflow occurs. Since the head of the patient is below the operating site, the overflow liquid may drop into the eyes of the patient, especially under the action of certain pressure, the liquid may splash into the eyes of the patient, causing discomfort or even pain to the patient.

[0003] To solve the above problems, some methods of shielding plates are adopted, that is, a transparent organic glass plate is arranged between the patient and the doctor, an opening through which the bronchoscope can enter and exit is formed on the glass plate, or a circular hole slightly larger than the diameter of the bronchoscope tube is formed. When in use, the doctor operates the bronchoscope through the transparent plate, and the coughing airflow and respiratory tract secretions of the patient are blocked by the organic glass plate, avoiding direct pollution to the doctor. Some doctors also wear protective face screens to prevent direct pollution of the airway secretions sprayed by the patient to the face. The above measures can block the direct pollution caused by the spraying of blocky secretions, but the coughing airflow droplets and the pathogenic microorganisms they may carry are not filtered, but directly diffuse into the air, causing pollution of the operating room space, and the health hazards still exist.

[0004] People have a more profound understanding of the harmfulness that the unfiltered coughing airflow of respiratory disease patients directly discharged during the bronchoscopy diagnosis and treatment process, but there is no special health protection equipment for coughing airflow control and filtering in the clinic. In this case, some medical staff try to let the patient wear a medical mask to cope with it, that is, to cover the patient's upper lip and the part below the mouth with the mask body, leaving the nostrils (as the access port of the airway for bronchoscopy and the like), in the hope of achieving the purpose of blocking and filtering through the shielding and filtering effect of the mask, blocking pathogens, droplets and airway secretions, protecting the health and safety of medical staff and other patients, and protecting the medical environment.

[0005] The medical mask is a filtering barrier covering the wearer's mouth, nose to the lower jaw. The mask that meets the technical standard requirements has the effect of preventing pathogens, particles and the like from directly penetrating. During wearing and use, the tightness between the mask and the covered part is the key to affecting the actual filtering effect. The tightness is an index reflecting the degree of contact between the mask body and the covered part. The higher the degree of contact, the better the tightness, otherwise, the airflow is easy to leak from the gap between the covered part, which cannot achieve the purpose of effectively filtering the airflow. The existing masks include flat medical surgical masks, folding protective masks and the like. The tightness between them and the covered part is mainly related to the fit between the mask body and the covered part and the pulling force of the mask belt. Under normal wearing and use conditions, due to the small pressure difference of gas exchange on both sides of the mask body, the slow airflow velocity, and the certain tightness between the mask and the covered part, most of the respiratory airflow can be filtered through the mask body, but in the case of coughing, especially severe coughing, due to the fast airflow velocity and large air volume, the overflow will occur from the gap between the face and the mask body. At this time, the medical mask cannot play the role of filtering the airflow.

[0006] From the actual effect of using the medical mask for protection in the clinic, this method can block the airway secretions sprayed out of the coughing airflow, and solve the problem of the direct contamination of the doctor's face and chest by the airway secretions, but the gap between the mask body and the covered face will increase when the patient coughs, and the airflow will overflow from the gap, and the droplets and possible pathogens will also spread to the surrounding environment. Even if the patient is instructed to cover the mask with his hand when coughing, the coughing airflow will still overflow from the gap between the mask and the face, which cannot achieve the purpose of completely controlling the airflow flow range, and it is impossible to effectively filter the airflow. Moreover, after covering the mask with the hand, the coughing airflow cannot pass through the mask filter layer, which will directly affect the effect of filtering the airflow by the mask. Therefore, the medical mask protection has the problems of coughing airflow leakage, ineffective control and effective filtering of the airflow, and cannot solve the problem of wiping the patient's mouth water.

[0007] For the problem that the overflow liquid may drip and splash to the patient's eyes, the current solution is to wear a medical surgical mask for the patient, and the mask body is used to shield the patient's eyes. This method is effective, but it needs to set up an eye shield separately, which increases the treatment cost.

[0008] The reason that the above medical mask cannot effectively filter the airflow is that the patient's cough caused by bronchoscopy has the characteristics of fast airflow injection speed and large instantaneous airflow injection amount. The fast and large cough airflow is ejected, which can suddenly increase the pressure between the mask body and the face shielded by it, and the direct impact of the injection airflow can cause a clear gap between the mask body and the face, and most of the airflow is not filtered by the mask body and flows out from the gap. Therefore, it is not suitable for controlling and filtering the cough airflow of the patient during bronchoscopy.

[0009] Based on the above situation, on the basis of using the medical mask with good filtering effect, combined with the characteristics of the cough airflow of the patient during bronchoscopy, a special protective product with simple structure and convenient use is researched, which can solve the leakage of the cough airflow, limit the airflow within a certain range, and finally effectively filter the airflow. At the same time, it can also control the flow of the patient's mouth water. On this basis, the eye shielding measure is set up, and the problem of the overflow liquid that may drip and splash to the patient's eyes is solved, and the eye shielding measure is set up separately and the additional cost is increased. Therefore, the shortcomings of the medical mask protection method are overcome, the blank of the lack of special protective product in the medical process is filled, and it has positive significance for protecting the health and safety of medical staff and other patients, preventing environmental pollution, reducing the risk of hospital infection, etc. SUMMARY

[0010] The main technical problem to be solved by the present application is to provide a cough airflow control filter cover that can limit the flow range of the cough airflow and prevent the leakage of the airflow, and finally effectively filter the airflow, and at the same time, can limit the random flow of the patient's mouth water. To solve the problem of ineffective filtering of airflow leakage and wiping of random mouth water flow. In addition, another technical problem to be solved by the present application is to set up shielding measures on the basis of the above cough airflow control filter cover, and to solve the problem of setting up an eye shield separately.

[0011] To solve the above-mentioned main technical problems, the technical scheme adopted by the present application is: a cough airflow control filtering mask, comprising a mask body and a mask belt, characterized in that: it further comprises a surface layer located on one side of the inner side of the mask body and a water absorption layer located between the two. The surface layer is provided with a mouth opening capable of exposing the mouth slit and lower lip of the wearer in the transverse center, the surface layer between the mouth opening and the middle straight line segment of the upper side edge of the surface layer is adapted to the upper lip of the wearer, and the surface layer can cover the upper lip of the wearer and the part between the upper lip and the lower jaw on both sides of the upper lip except the mouth slit and the lower lip. The water absorption layer is connected with the surface layer and is provided with an airflow port. The mask body is adapted to the surface layer, and the periphery of the two is sealingly connected. The mask belt is connected with the left and right sides of the surface layer at appropriate positions respectively.

[0012] To solve the problem of additionally setting an eye shielding part, the technical scheme adopted by the present application is: the above-mentioned cough airflow control filtering mask further comprises a shielding part. The shielding part is a part of the surface layer extending upward from the upper side edge thereof to cover the eyebrows of the wearer and not covered by the mask body, which is provided with an equilateral triangle opening with a middle straight line segment as the base, and the top corner of the opening has an upward extension of about 1 cm long. The mask belt is connected with the left and right sides of the surface layer and the shielding part at appropriate positions respectively.

[0013] The beneficial effects of the present application are that: on one side of the inner side of the mask body, a surface layer is arranged, and a water absorption layer connected with the surface layer is arranged between the surface layer and the mask body, both of which are provided with airflow ports. The mask body is adapted to the surface layer, and the periphery of the two is connected. When in use, the cough airflow enters the control bag formed by the surface layer and the mask body, which has the functions of limiting airflow flow and filtering, and the pressure in the bag is increased, the surface layer is forced to be in closer contact with the face by the pressure in the bag, and the airflow leakage gap is further eliminated. The airflow limited in the control bag can only be dispersed and discharged after being filtered by the mask body, and the pathogen microorganisms, droplets and secretions are intercepted; the water absorption layer can absorb the saliva of the patient and limit the flow of the saliva. In addition, on the basis of the above, the shielding part can shield the eyes of the patient and block the overflow of the liquid that may drop or splash into the eyes. Therefore, the present application solves the problems that the cough airflow of the patient is not effectively filtered and the saliva of the patient randomly flows and needs to be wiped during the bronchoscope diagnosis and treatment process, and also solves the problems of additionally setting an eye shielding part and increasing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the sagittal plane structure when the first embodiment is worn

[0015] Figure 2 is a schematic diagram of the structure of the surface layer

[0016] Figure 3 is a schematic diagram of the structure of the water absorption layer and the surface layer

[0017] Figure 4 This is a schematic diagram of the sagittal plane structure when worn in the second embodiment.

[0018] Figure 5 This is a schematic diagram of a filter cover structure with a shielding part. Detailed Implementation

[0019] The technical solution and two embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] See Figures 1-3 A cough-controlling airflow filter includes a mask body 2 and mask straps, characterized in that it further includes a face layer 1 located on one side of the inner side of the mask body 2 and an absorbent layer located between the two. The face layer 1 has a horizontally centered mouth opening 11 that exposes the wearer's mouth and lower lip. The face layer between the mouth opening and the middle straight section 12 of the upper side of the face layer conforms to the wearer's upper lip, and the face layer covers the wearer's upper lip and the area from both sides of the upper lip to the lower jaw, excluding the mouth and lower lip. The absorbent layer is connected to the face layer and has airflow vents. The mask body 2 is adapted to the face layer 1, and the two are sealed together at their perimeters. The mask straps are connected to appropriate positions on the left and right sides of the face layer.

[0021] See Figure 4 , Figure 5 It also includes a shielding part 4. The shielding part 4 is the portion of the face mask layer that extends upward from its upper side to cover the wearer's eyebrows without being covered by the mask body 2. It has an equilateral triangular opening 41 with the middle straight segment 12 as its base, and the apex of the opening has a notch 42 extending upward about 1 cm long. The mask straps are connected to the face mask layer and the shielding part at appropriate positions on the left and right sides, respectively.

[0022] Specifically, see Figure 1 , Figure 3 , Figure 4 The absorbent layer covers the outer layer 1, approximately 2 cm below the mouth opening 11 and extending horizontally above the outer edge. It includes a rear layer 31 connected to the outer layer and a front layer 32 located between the rear layer and the mask body 2. The outer peripheries of the front and rear layers are connected, and both layers have a waterproof layer on their outer surfaces. Each layer has its own horizontally centered airflow opening. The portion of the rear layer 31 above the horizontal line corresponding to the lower edge of the mouth opening 11 can be connected to the outer layer 1. Its airflow opening is the same as the mouth opening, and their edges are connected. The airflow opening of the front layer 32 is a longitudinal opening with a horizontal width approximately 3 / 5 of the mouth opening 11, roughly flush with its bottom edge, extending upwards to the top of the front layer.

[0023] Specifically, see Figure 2 , Figure 3, the face layer 1 is left-right symmetrical structure, the mouth opening 11 below the face layer is equipped with horizontal folding layer. The length of the middle straight line section 12 is substantially equal to the distance between the nose wings of the wearer. The upper side edge shape of the water absorption layer is substantially adapted to the upper side edge of the face layer. The mask body 2 is non-planar structure similar to the folded mask, which can wrap the lower jaw.

[0024] Specifically, see Figure 2 、 Figure 3 , the face layer 1 is left-right symmetrical structure, the mouth opening 11 below the face layer is equipped with horizontal folding layer. The length of the middle straight line section 12 is substantially equal to the distance between the nose wings of the wearer. The upper side edge shape of the water absorption layer is substantially adapted to the upper side edge of the face layer. The mask body 2 is non-planar structure similar to the folded mask, which can wrap the lower jaw.

[0025] More specifically, the mask body 2 is equipped with a one-way valve that is closed during exhalation and opened during inhalation.

[0026] Specifically, see Figure 2 、 Figure 3 , the face layer 1 is left-right symmetrical structure, the mouth opening 11 below the face layer is equipped with horizontal folding layer. The length of the middle straight line section 12 is substantially equal to the distance between the nose wings of the wearer. The upper side edge shape of the water absorption layer is substantially adapted to the upper side edge of the face layer. The mask body 2 is non-planar structure similar to the folded mask, which can wrap the lower jaw.

[0027] Specifically, see Figure 2 、 Figure 3 , the face layer 1 is left-right symmetrical structure, the mouth opening 11 below the face layer is equipped with horizontal folding layer. The length of the middle straight line section 12 is substantially equal to the distance between the nose wings of the wearer. The upper side edge shape of the water absorption layer is substantially adapted to the upper side edge of the face layer. The mask body 2 is non-planar structure similar to the folded mask, which can wrap the lower jaw.

[0028] More specifically, the mask body 2 is equipped with a one-way valve that is closed during exhalation and opened during inhalation.

[0029] The first embodiment of the technical scheme of the application

[0030] As shown in Figure 1 、 Figure 2 、 Figure 3 , a coughing airflow control filter mask includes a mask body 2 and a mask belt, and further includes a face layer 1 and a water absorption layer.

[0031] As shown in Figure 1 ,Figure 2 As shown in the figure, the surface layer 1 is located on one side of the inner side of the mask body 2, which is provided with a mouth opening 11 in the middle of the transverse direction to expose the mouth slit and lower lip of the wearer, and the surface layer above the middle straight line segment 12 between the mouth opening and the upper lip of the wearer is adapted to the surface layer, which can cover the upper lip and the part between the upper lip and the lower jaw of the wearer except the mouth slit and the lower lip.

[0032] As shown in the figure, Figure 2 The surface layer 1 is symmetrical in structure, and the surface layer below the mouth opening 11 is provided with a transverse folding layer. The length of the middle straight line segment 12 is approximately equal to the distance between the wings of the wearer's nose.

[0033] The surface layer given in this embodiment is divided into three types according to the shape of its upper side, and any one can be selected. Each type of surface layer is a component part of this embodiment.

[0034] The first type, as shown in 2-2 in the figure, Figure 2 The middle straight line segment 12 of the upper side and the rest of the upper side symmetrically arranged on both sides of it are located on the same straight line, forming a straight line-shaped surface layer.

[0035] The second type, as shown in 2-1 in the figure, Figure 2 The rest of the upper side symmetrically arranged on both sides of the middle straight line segment 12 is curved upward at the outer end, forming a non-linear surface layer with the middle low and the sides high.

[0036] The third type, as shown in 2-3 in the figure, Figure 2 The rest of the upper side symmetrically arranged on both sides of the middle straight line segment 12 is curved downward at the outer end, forming a non-linear surface layer with the middle high and the sides low. The rest of the upper side can be a straight line or an arc.

[0037] As shown in the figure, Figure 1 The water absorption layer is located between the surface layer 1 and the mask body 2, and the water absorption layer is connected with the surface layer and provided with an air flow port.

[0038] As shown in the figure, Figure 3 The water absorption layer covers the surface layer 1 above the transverse straight line about 2 cm below the mouth opening 11, which includes a rear layer 31 connected with the surface layer and a front layer 32 located between the rear layer and the mask body 2, the outer periphery of the front and rear layers is connected, and the outer surfaces of the two layers are provided with a water barrier film, and each layer is respectively provided with a transversely centered air flow port. The part of the rear layer 31 above the horizontal line corresponding to the lower edge of the mouth opening 11 can be connected with the surface layer 1, and the air flow port is the same as the mouth opening and the edge of the air flow port is connected. The air flow port of the front layer 32 is a longitudinal opening with a transverse width of about 3 / 5 of the mouth opening 11, a bottom edge substantially parallel to the mouth opening, and an upper end reaching the top of the front layer.

[0039] AsFigure 1 The mask body 2 is adapted to the surface layer 1 and the periphery is sealedly connected.

[0040] The mask body can be in two forms, either of which can be selected.

[0041] In the first form, the mask body 2 has a length greater than that of the surface layer 1, and the mask body is provided with a plurality of transverse folding layers arranged in a plane similar to the upper and lower rows of a surgical mask. In order to facilitate the arrangement of the water-absorbing layer 4 and to provide a larger airflow restriction space and a larger airflow filtering area, the length of the mask body 2 is greater than that of the surface layer 1, and when the upper and lower edges of the mask body are connected to the upper and lower edges of the surface layer, the excess part can be folded and sealed.

[0042] In the second form, the mask body 2 is a non-planar structure similar to a folded mask that can wrap around the lower jaw. This structure allows a certain space between the mask body and the surface layer, which is beneficial for the arrangement of the water-absorbing layer 4 and provides a larger airflow restriction space and a larger airflow filtering area. In order to facilitate the insertion of a bronchoscope through the nostril, the preferred embodiment of the mask body is to provide a main mask surface that starts from the middle straight section 12 and extends downward and outward along the upper lip. The main mask surface extends downward to a position close to the lower jaw and extends outward to a maximum transverse width that is about 4 cm greater than the transverse length of the mouth opening 11. According to the specific shape of the surface layer, each auxiliary mask surface is provided to connect the main mask surface to the remaining upper edge of the mask body except for the middle straight section 12 of the surface layer, as well as the other edges of the surface layer. After the connection of each auxiliary mask surface, the corresponding connecting edges of the surface layer and the main mask surface should be adapted and a certain space should be ensured between the main mask surface and the surface layer. The auxiliary mask surfaces are sealedly connected to each other and to the main mask surface.

[0043] The mask straps are connected to appropriate positions on the left and right sides of the surface layer, respectively.

[0044] When worn normally, the surface layer 1 can contact and cover the upper lip and the area between the upper lip and the lower jaw on both sides, except for the mouth opening 11 and the lower lip, and the mask body 2 can cover the water-absorbing layer including the airflow port and the remaining surface layer not covered by the water-absorbing layer.

[0045] Second embodiment of the technical solution of the present application

[0046] As shown in Figure 4 , Figure 5 A choking airflow control and filtering mask, including a mask body 2, a surface layer 1, a water-absorbing layer, and a mask strap, further comprising a shielding part 4.

[0047] As shown in Figure 5As shown, the shielding part 4 is the part of the surface layer extending upward from the upper side edge to cover the eyebrows of the wearer and not covered by the mask body 2, which is provided with an equilateral triangle opening 41 with the upper side edge middle straight segment 12 as the bottom edge, and the top corner has an upward extending about 1 cm long gap 42, the top end of which should not exceed the position of the line connecting the two eyes.

[0048] The mask band is connected to the appropriate positions of the left and right sides of the surface layer and the shielding part respectively. In view of the significant increase in the longitudinal length of the filter cover due to the shielding part, in order to ensure the stability after wearing and the tightness between the surface layer and the face, the preferred embodiment of the mask band is to use a bandage type mask band, and the connecting head of each mask band is provided as a Y shape, which is connected to the upper part and the middle part of the left and right sides of the filter cover, and the middle part and the lower part, that is, to increase the middle connecting point. The conventional ear hanging type or bandage type mask band can also be used, which is connected to the appropriate positions of the left and right sides of the surface layer and the shielding part respectively.

[0049] When normally worn and used, the surface layer 1 can contact and cover the upper lip and the sides of the upper lip of the wearer to the lower jaw, except for the mouth opening 11 and the lower lip, the mask body 2 can cover the water absorption layer including the air flow port and the remaining surface layer not covered by the water absorption layer; the shielding part 4 can cover the cheeks, eyes and eyebrows except the root of the nose and the middle and lower part of the nose bridge.

[0050] In addition to the above, other related contents of this embodiment are completely the same as the first embodiment of the technical scheme of the application, and are equally adopted here, and will not be repeated.

[0051] The present application can be designed into different specifications to improve the use effect and wearing comfort. In addition to the size of the main body, it is important to ensure that the surface layer between the mouth opening and the upper side edge middle straight segment can cover the upper lip of the wearer, which is the key to prevent air leakage.

Claims

1. A cough-inducing airflow control filter hood, comprising a mask body (2) and mask straps, characterized in that: It also includes a face layer (1) located on one side of the inner side of the mask body (2) and an absorbent layer between the two. The face layer (1) has a mouth opening (11) that is horizontally centered and can expose the wearer's mouth and lower lip. The face layer between the mouth opening and the middle straight section (12) of the upper side of the face layer is adapted to the wearer's upper lip. The face layer can cover the wearer's upper lip and the area between the sides of the upper lip and the lower jaw, excluding the mouth and lower lip. The absorbent layer is connected to the face layer and has an air vent. The mask body (2) is adapted to the face layer (1) and the two are sealed together around the perimeter. The mask straps are connected to the left and right sides of the face layer at appropriate positions.

2. The cough-inducing airflow control filter cover according to claim 1, characterized in that: It also includes a shielding part (4), which is a part of the face layer that extends upward from its upper side to cover the wearer's eyebrows without being covered by the mask body (2). It has an equilateral triangular opening (41) with the middle straight line segment (12) as the base, and the apex of the opening has a notch (42) that extends upward about 1 cm long. The mask straps are connected to the face layer and the shielding part at appropriate positions on the left and right sides respectively.

3. The cough-inducing airflow control filter cover according to claim 1, characterized in that: The absorbent layer covers the face layer (1) about 2 cm below the mouth opening (11) and above the horizontal straight line. It includes a back layer (31) connected to the face layer and a front layer (32) located between the back layer and the mask body (2). The outer peripheries of the front and back layers are connected. Both layers have a waterproof layer on their outer surface. Both layers have their own horizontally centered airflow openings. The part of the back layer (31) above the horizontal line corresponding to the lower edge of the mouth opening (11) can be connected to the face layer (1). Its airflow opening is the same as the mouth opening and the edges of the two are connected. The airflow opening of the front layer (32) is about 3 / 5 of the width of the mouth opening (11) in the horizontal direction, and its bottom edge is roughly the same as it, reaching the vertical opening at the top of the front layer.

4. A cough-inducing airflow control filter hood according to claim 1 or 3, characterized in that: The face layer (1) has a left-right symmetrical structure. The face layer below the mouth opening (11) is provided with a horizontal fold layer. The length of the middle straight section (12) is approximately equal to the distance between the wearer's nose wings. The shape of the upper side of the absorbent layer is approximately adapted to the upper side of the face layer. The horizontal length of the mask body (2) is greater than the horizontal length of the face layer (1). The mask body is provided with horizontal fold layers arranged vertically, similar to those of a flat medical surgical mask.

5. A cough-inducing airflow control filter hood according to claim 1 or 3, characterized in that: The face layer (1) is a left-right symmetrical structure. A horizontal folded layer is provided on the face layer below the mouth opening (11). The length of the middle straight section (12) is approximately equal to the distance between the wearer's nose wings. The shape of the upper side of the absorbent layer is approximately adapted to the upper side of the face layer. The mask body (2) is a non-planar structure similar to a folded mask that can wrap around the chin.

6. A cough-inducing airflow control filter cover according to claim 5, characterized in that: The mask body (2) is provided with a one-way valve that is closed when exhaling and opened when inhaling.

7. A cough-inducing airflow control filter hood according to claim 1, 2, or 3, characterized in that: The face layer (1) has a left-right symmetrical structure. The face layer below the mouth opening (11) is provided with a horizontal fold layer. The length of the middle straight section (12) is approximately equal to the distance between the wearer's nose wings. The shape of the upper side of the absorbent layer is approximately adapted to the upper side of the face layer. The horizontal length of the mask body (2) is greater than the horizontal length of the face layer (1). The mask body is provided with horizontal fold layers arranged vertically, similar to those of a flat medical surgical mask.

8. A cough-inducing airflow control filter hood according to claim 1, 2, or 3, characterized in that: The face layer (1) is a left-right symmetrical structure. A horizontal folded layer is provided on the face layer below the mouth opening (11). The length of the middle straight section (12) is approximately equal to the distance between the wearer's nose wings. The shape of the upper side of the absorbent layer is approximately adapted to the upper side of the face layer. The mask body (2) is a non-planar structure similar to a folded mask that can wrap around the chin.

9. A cough-inducing airflow control filter hood according to claim 8, characterized in that: The mask body (2) is provided with a one-way valve that is closed when exhaling and opened when inhaling.

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