Mask with valve

Abstract

The utility model relates to a mask, in particular to a mask with a valve, which is applicable to multiple fields and capable of improving use reliability and comprises a mask main body, a connecting part and a valve component. Wherein the mask body has a first side and a second side configured to at least partially cover a nasal and / or oral airway inlet of a user; the connecting part is provided with a third side and a fourth side and is configured to be connected with the mask body and allow gas to enter or exit from the mask body; the valve assembly is located on a penetrating channel formed by extending of the two sides of the connecting part and is configured to only allow airflow to pass through the connecting part in a one-way mode. In addition, the mask can be used more effectively by limiting the valve assembly.

Description

Technical Field

[0001] The utility model relates to a mask with a valve, configured to increase the reliability of the overall device in multiple fields and ensure the effectiveness of use. Background Art

[0002] Masks are necessary in some fields of life. In the medical field, masks are commonly used for mechanical ventilation treatment of users, or for sucking out obstructions in the respiratory tract of users during first aid to provide emergency respiratory support, and can also be used for the delivery of anesthetic gases during surgery; in home care, for users suffering from sleep apnea-related diseases (such as chronic obstructive pulmonary disease COPD, obstructive sleep apnea syndrome OSA, asthma), masks can be used in combination with related devices to treat or improve related symptoms; in addition, masks are also used in emergency rescue, sports training, and scientific research experiments. These application fields demonstrate the importance and diversity of masks in all walks of life, proving that masks have become an essential part of various fields.

[0003] Common masks include nasal pillows, nasal masks, face masks, and full-face masks. Among them, the nasal pillow is the lightest and most compact mask, with only two protrusions inserted into the nostrils and hardly touching the face; the nasal mask is larger than the nasal pillow and is configured to send air into the nostrils but does not enter the nostrils, covering the user's nose; while the face mask sends air into the nostrils and mouth, covering the user's nose and mouth; the full-face mask provides the most comprehensive and sealed air supply, covering the user's nose bridge to the chin and including more of the face. Different forms of masks correspond to different application scenarios and populations. Choosing the right mask also depends on personal comfort, pressure requirements, application fields, and facial features. Some masks are set to cooperate with a one-way valve, allowing gas to flow in only one direction and preventing the flow of air in the opposite direction. This type of mask is mostly used in anti-asphyxia first aid (sucking out obstructions in the respiratory tract during first aid, and the one-way valve is used to prevent pushing the obstruction into the respiratory tract during the generation of negative pressure), anesthesia masks (providing anesthetic gases during surgery, and the one-way valve ensures unidirectional air flow, preventing backflow and preventing gas leakage into the operating room), chemical industry and pharmaceutical (when dealing with harmful gases or chemicals, the one-way valve prevents operators from inhaling toxic substances), etc.

[0004] Common valve types used in conjunction with masks include diaphragm valves, ball valves, spring valves, movable valves, etc. However, in the existing market-related devices, the mask and the valve are located on two separate components, and the effect is not good. During the process of compressing air before discharging gas, it is easy to blow the gas into the user's airway, further aggravating the severity of the user's condition. Summary of the Utility Model

[0005] Based on the above deficiencies, the present utility model provides a face mask applicable to multiple fields and capable of improving the effectiveness of use and preventing misoperation.

[0006] A face mask with a valve, configured to provide protection for a masked device in different fields, includes:

[0007] A face mask body having a first side in contact with the user's face and a second side opposite to the first side, the face mask body being configured to at least partially cover the user's nasal and / or oral airway entrances;

[0008] A connection part having a third side adjacent to the second side and a fourth side opposite to the third side, the connection part being configured to discharge the airflow in the face mask body or convey the airflow into the face mask body;

[0009] A valve assembly located on a through-channel formed by extending both sides of the connection part, the valve assembly including a valve and being configured to allow only unidirectional airflow through the connection part.

[0010] In one embodiment, at least one cross-sectional shape of the connection part is one of a circle, an ellipse, and a polygon.

[0011] In one embodiment, at least a part of the connection part is in the form of a non-bent channel.

[0012] In one embodiment, the valve assembly has two ends, and when there is no gas flow, the projected areas of the two ends on the horizontal plane are different.

[0013] In one embodiment, the valve assembly is composed of one or more materials among silicone, plastic, and metal.

[0014] In one embodiment, the first side of the face mask body has a flexible pad, and the flexible pad is configured to form a seal with the user's face.

[0015] The present utility model also discloses a face mask with a valve, configured to provide protection for a masked device in different fields, including:

[0016] A face mask body having a first side in contact with the user's face and a second side opposite to the first side, the face mask body being configured to at least partially cover the user's nasal and / or oral airway entrances;

[0017] A connection part having a third side adjacent to the second side and a fourth side opposite to the third side, the connection part being configured to discharge the airflow in the face mask body or convey the airflow into the face mask body;

[0018] A valve assembly is located on a through-channel formed by extending on both sides of the connection part. The valve assembly includes a valve and is configured to allow air flow to pass through the connection part unidirectionally only.

[0019] Wherein, the second side of the mask body has an opening, and the projected area of the valve assembly in the horizontal plane is greater than 30% of the area of the opening.

[0020] In one embodiment, the outer perimeter of the valve assembly is greater than the perimeter of the opening.

[0021] In one embodiment, the outer perimeter of the valve assembly is less than or equal to the perimeter of the opening.

[0022] In one embodiment, the valve assembly is configured to allow air flow to circulate only in the direction from the first side towards the fourth side.

[0023] In one embodiment, the valve assembly is configured to be at least partially connected and fixed to the connection part.

[0024] In one embodiment, the connection of at least a part of the valve assembly to the connection part is achieved by one or more of adhesion, welding, and mechanical structure connection.

[0025] The present utility model also discloses a mask with a valve, configured to provide protection for a masked device in different fields, including:

[0026] A mask body having a first side in contact with the user's face and a second side opposite to the first side. The mask body is configured to at least partially cover the user's nasal and / or oral airway entrances.

[0027] A connection part having a third side adjacent to the second side and a fourth side opposite to the third side. The connection part is configured to discharge the air flow in the mask body or transport the air flow into the mask body.

[0028] A valve assembly is located on a through-channel formed by extending on both sides of the connection part. The valve assembly includes a valve and is configured to allow air flow to pass through the connection part unidirectionally only.

[0029] Wherein, during the process of allowing the gas to flow unidirectionally, the valve assembly forms at least one gas flow port, and the maximum area of the flow port is less than or equal to 38.485 square centimeters.

[0030] In one embodiment, the central axis of the valve assembly coincides with or is parallel to the central axis of the connection part.

[0031] In one embodiment, the distance from the valve assembly to the first side of the mask body is greater than one-tenth of the distance from the second side of the mask body to the first side.

[0032] In one embodiment, the distance between the valve assembly and the fourth side of the connecting portion is less than or equal to the distance between the first side of the mask body and the fourth side of the connecting portion.

[0033] In one embodiment, the mask body is configured to be of a universal size.

[0034] The present utility model also discloses a mask with a valve, configured to provide protection for a masked device in different fields, including:

[0035] A mask body having a first side in contact with the user's face and a second side opposite to the first side, the mask body being configured to at least partially cover the user's nasal and / or oral airway entrances;

[0036] A connecting portion having a third side adjacent to the second side and a fourth side opposite to the third side, the connecting portion being configured to discharge the air flow in the mask body or convey the air flow into the mask body;

[0037] A valve assembly located on a through-channel formed by extending on both sides of the connecting portion, the valve assembly including a valve and configured to only allow the air flow to pass through the connecting portion unidirectionally;

[0038] Wherein, the valve assembly has at least one thin area, the thin area having a thickness thinner than other parts in the valve assembly and configured to deform to allow the air flow to pass through the valve assembly unidirectionally;

[0039] Wherein, the thickness of at least part of the thin area is less than or equal to 5 mm.

[0040] In one embodiment, the valve assembly has at least one slit, and the slit is arranged in the middle of the thin area or / and the area where multiple thin areas are joined.

[0041] In one embodiment, the thin area is configured not to damage its material or performance during the deformation process.

[0042] In one embodiment, at least part of the thin area is made of a flexible material.

[0043] In one embodiment, the valve assembly and the connecting portion are not integrally formed.

[0044] In one embodiment, the valve assembly and the connecting portion are at least partially integrally formed.

[0045] The mask of the present invention has at least the following beneficial effects:

[0046] 1) The mask of the utility model of the present invention has a wide range of uses and is suitable for various fields such as medical emergency and home care. In the existing market, anti-suffocation devices, suction devices, emergency respirators, etc. all have the form of valves and masks, but the above-mentioned devices in the existing market still have room for improvement. For example, compared with the anti-suffocation devices in the existing market, the device is composed of a negative pressure generator, a one-way valve and a mask. However, its one-way valve is not connected to the mask, resulting in only one channel at the connection between the negative pressure generator and the mask of the anti-suffocation device, and there is no one-way valve to isolate the negative pressure generator from the mask. When the anti-suffocation device takes effect, it is first necessary to discharge the excess air in the negative pressure generator to form a negative pressure. At this time, since there is no isolated channel between the negative pressure generator and the mask, the air discharged by the negative pressure generator can easily enter the mask. This process causes the mask that originally needs to extract the internal air to be forcibly injected with air, which is contrary to the original function of the anti-suffocation device. Air enters the user's respiratory tract through the mask body, which can easily cause obstructions to be pushed deeper into the respiratory tract. In some extreme cases, it can cause serious damage to the user's respiratory tract, such as cutting the throat, which is dangerous for the user. Therefore, a one-way valve is added to the mask at an appropriate position through design, and various designs are made to the one-way valve to make it more effective and reliable. Replacing the mask of the utility model with the existing device ensures the safety of devices such as anti-suffocation devices, ensures the correct flow of airflow during the negative pressure formation process, and can prevent misoperation during the negative pressure formation process. And because the use of one-way valves and masks is widely used in many fields, the mask with a one-way valve of the utility model can correct and improve a variety of existing products, so that the reliability of the overall device in many fields is increased, bringing a better product experience to users.

[0047] 2) In some devices in the above-mentioned fields, there is a one-way valve between the negative pressure generator and the mask. In this case, by using the mask with a one-way valve of the utility model of the present invention, secondary protection can be provided to the device. Specifically, the mask of the utility model of the present invention can not only effectively prevent the backflow of gas during the process of forming negative pressure in the device, but also effectively maintain the stability of the negative pressure, thereby enhancing the stability and efficiency of the device in maintaining negative pressure. When an accident occurs in the device, the mask with a valve can provide additional safety protection for the device, resulting in a safer and more reliable device than the original one. This dual mechanism is particularly important for applications in some high-demand or refined fields, and provides users with a safer and more effective respiratory support solution.

[0048] 3) The utility model of the present technology has advantages in other aspects by taking the valve and the face mask as a separate module. a. For users, only replacing the face mask can improve the safety of the overall device, which is a very economical choice. Especially for the device without isolation between the negative pressure generator and the face mask, it ensures the necessary safety for users to use the device. b. Moreover, when the valve and the face mask are a combined module and the connection between the valve and the face mask is detachable, users can choose between a face mask with a valve and a face mask without a valve, increasing the scope of users' choices and the adaptability of the face mask of the present technology, enabling it to adapt to different application scenarios and requirements. c. In addition, compared with the design of combining the valve and the negative pressure generator, the design of combining the valve and the face mask is more conducive to users' cleaning. Since the valve usually has more sanitary dead corners than other parts of the device, when the device needs to be cleaned, the face mask itself has a simple structure and a two-way opening, making the valve connected to the face mask easier to be cleaned thoroughly, and ensuring that the device can maintain good sanitary conditions before and after each use, thus improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall face mask in an embodiment of the present utility model;

[0050] Figure 2 It is a schematic diagram of the through-channel in the connection part in multiple embodiments of the present utility model;

[0051] Figure 3 It is a schematic diagram of the face mask when the valve assembly allows gas to flow in an embodiment of the present utility model;

[0052] Figure 4 It is a schematic diagram of the valve assembly in the face mask being a detachable part in multiple embodiments of the present utility model;

[0053] Figure 5 It is a schematic diagram of the area of the gas flow port of the valve assembly in multiple embodiments of the present utility model;

[0054] Figure 6 It is a sectional view of a face mask with a valve in multiple embodiments of the present utility model;

[0055] Figure 7 It is a schematic diagram of the comparison between the horizontal projection area of the valve assembly in the face mask and the area of the second side opening in multiple embodiments of the present utility model;

[0056] Figure 8 It is a schematic diagram of the valve assembly at different positions in the through-channel in multiple embodiments of the present utility model;

[0057] Figure 9Schematic diagram of the flexible material of the valve assembly in the face mask in Embodiment 1 of the present utility model forming a certain height without wrinkles;

[0058] Figure 10 Schematic diagram of different size situations of the peripheral circumference and the opening circumference of the valve assembly in Embodiment 1 of the present utility model;

[0059] Figure 11 Schematic diagram of the flexible part of the valve assembly in the face mask in Embodiment 2 of the present utility model not forming a height; Detailed implementation manners

[0060] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0061] Compared with the face masks used in conjunction with valves in various existing devices on the market, the present utility model provides a face mask with a valve, which can improve the effectiveness of the overall device and increase the safety guarantee for users. The face mask with a valve can be used to replace the face mask in a device where there is no isolation between the negative pressure generator and the face mask, and can also be used to replace the face mask in a device where there is a valve between the negative pressure generator and the face mask in the device, but the face mask is not directly connected to the valve. The device after replacing the face mask can provide higher safety guarantee for users. On this basis, the face mask of the present technical utility model is also helpful for cleaning, and increases the selection range of users and the adaptation range of the face mask. Replacing only the face mask to improve the safety of the overall device is also an economical and better choice for users compared to replacing the entire device.

[0062] The present utility model provides a face mask 1 with a valve, configured to increase the reliability of the overall device in multiple fields and prevent misoperation.

[0063] Specifically, please refer to Figures 1 to 4, the face mask 1 of the present utility model is composed of three parts: a face mask body 2, a connecting part 3, and a valve assembly 4. By defining the cooperation form between the connecting part 3 and the valve assembly 4, as well as the form design and data of the valve assembly 4, a face mask 1 with higher stability and better effect is achieved. The face mask 1 of the present utility model can be used in devices in a variety of different fields, such as anti-asphyxia devices, suction sputum devices, first aid breathing apparatuses, etc. The above-mentioned devices all have the form of the face mask being used in cooperation with components. And the face masks of the above-mentioned devices are generally constructed to be detachable from other parts of the device to replace face mask bodies of different sizes. Therefore, the face mask 1 of the present utility model can be used for replacement in the above-mentioned various devices to improve the reliability of the above-mentioned devices and achieve higher effectiveness. In addition, the following devices can all be interpreted as devices having the form of the face mask body 3 being used in cooperation with the valve assembly 4, that is, devices that can use the face mask 1 of the present utility model. In most cases, the face mask 1 of the present utility model is used in combination with a negative pressure generator.

[0064] Among them, the face mask body 2 is the part that directly contacts the user's face, having a first side 21 that contacts the user's face and a second side 22 opposite to the first side 21. The face mask body 2 is configured to at least partially cover the user's nasal and / or oral airway entrances. When the device with the face mask 1 of the present utility model is in use, the face mask body 2 needs to be covered on the user's face before use. The face mask body 2 can be designed in different sizes according to the face sizes of different users. Generally, the face mask body 2 is configured to be of a general size. Since the face mask body 2 needs to withstand the extrusion force of the gas discharged by the negative pressure generator and needs to have a cavity for accommodating a certain volume of gas, and also needs to contact the user's face and achieve a certain degree of sealing. The former means that the face mask body 2 needs to be made of a relatively rigid material, while the latter takes into account the user's facial comfort and sealing requirements, and the face mask body 2 needs to have a relatively flexible material at the part that contacts the user's face. Therefore, the face mask body 2 forms an umbrella shape using a relatively rigid material at the position away from the user's face (i.e., the second side 22), and, the first side 21 of the face mask body 2 has a flexible pad configured to form a seal with the user's face.

[0065] The face mask 1 further includes a connecting portion 3. The face mask 1 is detachably or combinably connected to other parts of the device through the connecting portion 3. The connecting portion 3 has a third side 31 adjacent to the second side 22 and a fourth side 32 opposite to the third side 31. The connecting portion 3 is configured to discharge the air flow in the face mask body 2 or convey the air flow into the face mask body 2. Through channels 331 extending from both sides of the connecting portion 3 are formed to accommodate the valve assembly 4. A solid portion in the through channels 331 forms a cavity 33 allowing gas to flow through. The cavity 33 is configured to convey gas into the face mask body 2 or extract the gas in the accommodation cavity of the face mask body 2. To facilitate the connection with components on the third side 31 and the fourth side 32 and the flow of gas, at least a part of the cavity 33 is set in the form of a non-bent channel (i.e., the gas flows in a straight line in the cavity). The cavity 33 is generally in the form of a circular tube of a vertical cavity 33. In some other cases, the cavity 33 can also be set in any form other than the circular tube shape, or can also be in the form of a cavity 33 with a bend. Therefore, at least one cross-sectional shape of the cavity 33 is set as one of a circle, an ellipse, and a polygon. The connection between the connecting portion 3 and the face mask body 2 can be detachable or integrally formed. In some cases, the second side 22 of the face mask body 2 coincides with the third side 31 of the connecting portion 3, which is more common in the case of integral formation between the connecting portion 3 and the face mask body 2. In some other cases, the second side 22 of the face mask body 2 and the third side 31 of the connecting portion 3 may not coincide. Regardless of the positional relationship and connection situation between the connecting portion and the face mask body 2, there will be at least one opening 221 between the connecting portion and the face mask 1, and the opening 221 is configured to connect the cavity 33 and the face mask 1.

[0066] The valve assembly 4 is the core component of the face mask 1 of the present utility model. It is located on the through channels 331 extending from both sides of the connecting portion 3. The valve assembly 4 is configured to allow the air flow to pass through the connecting portion 3 in only one direction (such as Figure 2 、 Figure 3As shown. Among them, the through-channel 331 formed by extending on both sides of the connection part 3 can be understood as a channel formed by stretching the connection part 3 on the third side 31 and the fourth side 32 in accordance with the original curvature of the inner wall of the cavity 33 to both sides, and the valve assembly 4 is located on this through-channel 331. The valve assembly 4 is composed of one or more materials among silica gel, plastic, and metal. The valve assembly 4 can be integrally formed by a single material, or can be composed of a combination of multiple materials. When the valve assembly 4 is composed of a combination of multiple materials, the valve assembly 4 can be a combination of multiple structures. Of course, when the valve assembly 4 is composed of a single material, the valve assembly 4 can also be a combination of multiple structures. In addition, the valve assembly 4 is configured to be at least partially connected and fixed to the connection part, and the valve assembly 4 and the connection part 3 are not integrally formed (such as Figure 4 As shown). There are two cases where the valve assembly 4 and the connection part 3 are not integrally formed. It can be that the valve assembly 4 and the connection part 3 are detachably connected, or the valve assembly 4 and the connection part 3 are non-detachably connected by two separate parts. It can also be that the valve assembly 4 and the connection part 3 are at least partially integrally formed. When the valve assembly 4 and the connection part 3 are detachably connected, the connection can have various methods. Specifically, the connection of at least part of the valve assembly 4 and the connection part 3 is realized by one or more of bonding, welding, and mechanical structure connection. The direction in which the valve assembly 4 allows gas to flow can be only allowing air flow to be delivered into the accommodation cavity formed by the mask body 2, that is, the valve assembly 4 is configured to only allow air flow to flow in the direction from the fourth side 32 towards the first side 21; or it can be only allowing the air flow in the accommodation cavity formed by the mask body 2 to be discharged, that is, the valve assembly 4 is configured to only allow air flow to flow in the direction from the first side 21 towards the fourth side 32.

[0067] The following describes several structures of the mask 1 of the present invention with specific examples.

[0068] Embodiment 1

[0069] The mask 1 of this embodiment includes: a mask body 2, having a first side 21 in contact with the user's face and a second side 22 opposite to the first side 21, and the mask body 2 is configured to at least partially cover the user's nasal and / or oral airway entrances; a connection part 3, having a third side 31 connected to the second side 22 and a fourth side 32 opposite to the third side 31, and the connection part 3 is configured to discharge the air flow in the mask body 2 or deliver the air flow into the mask body 2. A valve assembly 4 is located on the through-channel 331 formed by extending on both sides of the connection part 3, and the valve assembly 4 includes a valve and is configured to only allow air flow to pass through the connection part 3 unidirectionally.

[0070] The valve assembly 4 in this embodiment is configured to be at least partially made of a flexible material, and the valve assembly 4 forms at least one gas flow port 41 during the process of allowing one-way gas flow, and the maximum area of the flow port 41 is less than or equal to 38.485 square centimeters (as Figure 5 shown). The formation of the gas flow port 41 mainly relies on the deformation of the thin region 42 in the valve assembly 4, that is, the valve assembly 4 has at least one thin region 42, and the thin region 42 has a thickness thinner than other parts of the valve assembly 4 and is configured to generate deformation to allow air flow to pass through the valve assembly 4 unidirectionally. The valve assembly 4 has a certain height and folds formed by the thin regions. Since the folds have a thickness thinner than other parts of the valve assembly 4, only the folds are opened when the valve assembly 4 allows gas to flow, and the folds are in a closed state when there is no gas flow. To facilitate the opening and closing of the thin region 42, at least part of the thin region 42 is made of a flexible material. After determining the form of the valve assembly 4, various aspects of the valve assembly 4 are restricted to make it more effective in use. Among them, it is set that the thickness of at least part of the thin region 42 is less than or equal to 5 mm (as Figure 6 shown, d≤5 mm in the figure), and the thin region 42 is configured not to damage its material or performance during the deformation process, that is, the thin region 42 can still maintain its function after being opened and closed multiple times, so that it can have a longer service life. And, to ensure the restricting effect of the one-way valve on the air flow in one direction, the mask 1 is constructed such that the second side 22 of the mask body 2 has an opening 221, and the projected area of the valve assembly 4 on the horizontal plane is greater than 30% of the area of the opening 221 (as Figure 7 shown). For the valve assembly 4, the valve assembly 4 has two ends. When there is no gas flow, the projected areas of the two ends on the horizontal plane are different, so that the valve assembly 4 is in an open state when it allows air flow to pass through in the direction of air flow. One end of the valve assembly 4 is a slit, that is, the valve assembly 4 has at least one slit, and the slit is provided in the middle of the thin region 42 or / and the area where multiple thin regions 42 are joined. When the slit is provided in the area where multiple thin regions 42 are joined, the valve assembly 4 usually has a larger gas flow port 41.

[0071] In this embodiment, the valve assembly 4 is located in the cavity 33 of the connecting part 3, so the peripheral circumference of the valve assembly 4 is less than or equal to the circumference of the opening 221. The valve assembly 4 can be located at any position in the cavity 33 (as Figure 8As shown, the central axis of the valve assembly 4 coincides with or is parallel to the central axis of the connecting portion 3. The valve assembly 4 may also be located at a position within the through-channel 331 that is not within the cavity 33. This situation is more common when the valve 4 assembly is not directly connected to the mask body 2 but is connected through other additional components. To ensure the effectiveness of the valve assembly 4 during use, the position of the valve assembly 4 within the mask 1 is defined such that it can deliver or discharge gas without being too far or too close to the user's face. Therefore, the distance from the valve assembly 4 to the first side 21 of the mask body 2 is greater than one-tenth of the distance from the second side 22 of the mask body 2 to the first side 21. Also, the distance between the valve assembly 4 and the fourth side 32 of the connecting portion 3 is less than or equal to the distance between the first side 21 of the mask body 2 and the fourth side 32 of the connecting portion 3, which more specifically defines the specific position where the valve assembly 4 can be effectively and comfortably used within the mask 1.

[0072] In some other embodiments, the flexible material of the valve assembly 4 forms a certain height without wrinkles (as Figure 9 shown, Figure 9 only one form in this embodiment is shown).

[0073] In some other embodiments, the outer perimeter of the valve assembly 4 is greater than the perimeter of the opening 221 (as shown by A in Figure 10 ), that is, the valve assembly 4 surrounds the outer wall of the connecting portion 3.

[0074] Embodiment 2

[0075] The mask 1 of this embodiment includes: a mask body 2 having a first side 21 in contact with the user's face and a second side 22 opposite to the first side 21, and the mask body 2 is configured to at least partially cover the user's nasal and / or oral airway entrances; a connecting portion 3 having a third side 31 connected to the second side 22 and a fourth side 32 opposite to the third side 31, and the connecting portion 3 is configured to discharge the airflow in the mask body 2 or deliver the airflow into the mask body 2. A valve assembly 4 is located on the through-channel 331 formed by extending on both sides of the connecting portion 3, and the valve assembly 4 includes a valve and is configured to only allow the airflow to pass through the connecting portion 3 unidirectionally.

[0076] The difference between this embodiment and Embodiment 1 is that: the flexible portion of the valve assembly 4 does not form a height and is in a thin sheet shape. The valve assembly 4 in this embodiment is divided into at least two parts, having a different structural form from Embodiment 1, but having exactly the same function as Embodiment 1 (as shown in Figure 11As shown. Specifically, the valve assembly 4 in this embodiment consists of a baffle and a blowing part. The baffle and the blowing part are constructed of at least two different materials. Usually, the baffle part is made of a plastic material, while the blowing part, i.e., the flexible part, is made of a softer material. The blowing part can also be understood as the thin area 42, which has a thinner thickness than the baffle in the valve assembly 4 and will not damage its material or performance during the deformation process. Similar to Embodiment 1, the flexible part is also configured to form at least one gas flow port 41 when gas flows through the valve assembly 4. However, at this time, the formation of the gas flow port 41 does not rely on the flexible part but is formed by the baffle. Specifically, at least part of the blowing part is fixed to the baffle, and the unfixed part is the movable part that can be blown up. When the valve assembly 4 allows gas to flow, the blowing part is blown open by the airflow, exposing the opening of the baffle, and the airflow flows out from the opening of the baffle. When the valve assembly 4 does not allow gas to flow, the blowing part is blocked by the baffle, thus constituting a one-way valve that allows gas to flow in a single direction. Here, at least one outer edge of the baffle is larger than the outer edge of the blowing part to block the flow of gas in the other direction.

[0077] In some other embodiments, the baffle part and the blowing part are made of the same material but have different thicknesses.

[0078] In addition, the technical features in the above embodiments can be combined as needed to obtain the face mask 1 including all or part of the above technical features.

[0079] Implementing the face mask 1 with a foam pad of the present utility model has at least the following beneficial effects:

[0080] 1) The face mask 1 of the present utility model has a wide range of application fields and is applicable to various fields such as medical first aid and home care. In the existing market, forms in which a valve is combined with a face mask exist in devices such as anti-asphyxia devices, pull-and-suction sputum devices, and first aid breathing apparatuses. However, the above-mentioned devices in the existing market are not reliable. For example, when comparing with the anti-asphyxia device in the existing market, this device is composed of a negative pressure generator, a one-way valve, and a face mask. However, its one-way valve is not arranged to be connected to the face mask, resulting in only one passage at the connection between the negative pressure generator and the face mask of this anti-asphyxia device, and there is no one-way valve to isolate the negative pressure generator from the face mask. When this anti-asphyxia device functions, first, the excess air in the negative pressure generator needs to be discharged to form a negative pressure. At this time, since there is no isolated passage between the negative pressure generator and the face mask, the air discharged from the negative pressure generator easily enters the face mask. This process causes the face mask, which originally needs to extract the internal air, to be forcibly injected with air instead, which is contrary to the original function of the anti-asphyxia device. The air enters the user's respiratory tract through the face mask body, easily causing the obstruction to be pushed deeper into the respiratory tract. In some extreme cases, it will cause serious injuries such as cutting the throat to the user's respiratory tract, which is dangerous for the user. Therefore, through design, a one-way valve is added at a suitable position on the face mask, and various designs are carried out on the one-way valve to make it more effective and reliable. Replacing the face mask 1 of the present utility model into the existing device ensures the safety of devices such as anti-asphyxia devices, ensures the correct flow of air during the formation of negative pressure, and can prevent misoperations during the formation of negative pressure. Moreover, due to the combined use of the one-way valve and the face mask being widely used in multiple fields, the face mask with a one-way valve of the present utility model can correct and improve various existing products, increasing the reliability of the overall device in multiple fields and bringing a better product experience to users.

[0081] 2) In some devices in the above fields, there is a one-way valve between the negative pressure generator and the face mask. In this case, by using the face mask 1 with a one-way valve of the present utility model, secondary protection can be provided for the device. Specifically, the face mask 1 of the present utility model can not only effectively prevent the backflow of gas during the formation of negative pressure in the device, but also effectively maintain the stability of the negative pressure, enhancing the stability and efficiency of the device in maintaining the negative pressure. When an accident occurs to the device, the face mask 1 with a valve can provide additional safety protection for the device, resulting in a device that is safer and more reliable than the original. This dual mechanism is particularly important for applications in some high-demand or refined fields, providing a safer and more effective breathing support solution for users.

[0082] 3) The utility model of the present technology also has advantages in other aspects by taking the valve and the face mask 1 as a separate module. a. For users, only replacing the face mask 1 can improve the safety of the overall device, which is a very economical choice. Especially for the device without isolation between the negative pressure generator and the face mask 1, it ensures the necessary safety for users to use the device. b. Moreover, when the valve and the face mask 1 are used as a combined module and the connection between the valve and the face mask 1 is detachable, users can choose between the face mask 1 with a valve and the face mask 1 without a valve, increasing the range of choices for users and the adaptability range of the face mask 1 of the present technology, enabling it to adapt to different application scenarios and requirements. c. In addition, compared with the design of combining the valve and the negative pressure generator, the design of combining the valve and the face mask 1 is more conducive to users for cleaning. Since the valve usually has more sanitary dead corners than other parts of the device, when the device needs to be cleaned, the face mask 1 itself has a simple structure and a two-way opening, making the valve connected to the face mask 1 easier to be cleaned thoroughly, while ensuring that the device can maintain a good sanitary state before and after each use, thus improving the convenience of use.

[0083] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] The above-described embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A mask with a valve, configured to provide protection for a device with the mask in different fields, characterized in that: The mask comprises: A mask body having a first side for contacting the user's face and a second side opposite to the first side, the mask body being configured to at least partially cover the user's nasal and / or oral airway entrances; a connecting portion having a third side adjacent to the second side and a fourth side opposite to the third side, the connecting portion being configured to exhaust airflow from the mask body or to deliver airflow into the mask body; The valve assembly is located on the through-channel formed by extending from both sides of the connecting part. The valve assembly includes a valve and is configured to allow airflow to pass through the connecting part in one direction only.

2. The mask according to claim 1, characterized in that At least one cross-sectional shape of the connecting portion is one of a circle, an ellipse, and a polygon.

3. The mask according to claim 2, characterized in that At least a portion of the connecting portion is in the form of a channel without bending.

4. The mask according to claim 1, characterized in that The valve component has two ends, and when no gas flows, the projection areas of the two ends on the horizontal plane are different.

5. The mask according to claim 1, characterized in that The valve assembly is made of one or more materials selected from the group consisting of silicone, plastic, and metal.

6. The mask according to claim 1, characterized in that The first side of the mask body has a flexible cushion configured to form a seal with the user's face.

7. A mask with a valve, configured to provide protection for a device with the mask in different fields, characterized in that: The mask comprises: A mask body having a first side for contacting the user's face and a second side opposite to the first side, the mask body being configured to at least partially cover the user's nasal and / or oral airway entrances; a connecting portion having a third side adjacent to the second side and a fourth side opposite to the third side, the connecting portion being configured to exhaust airflow from the mask body or to deliver airflow into the mask body; a valve assembly located on the through-channel formed by extending from both sides of the connecting portion, the valve assembly comprising a valve and configured to allow airflow to pass through the connecting portion in one direction only; The second side of the mask body has an opening, and the projection area of ​​the valve assembly on the horizontal plane is greater than 30% of the area of ​​the opening.

8. The mask according to claim 7, characterized in that The outer perimeter of the valve assembly is greater than the perimeter of the opening.

9. The mask according to claim 7, characterized in that The outer perimeter of the valve assembly is less than or equal to the perimeter of the opening.

10. The mask according to claim 7, characterized in that The valve assembly is configured to only allow air flow from the first side toward the fourth side.

11. The mask according to claim 7, characterized in that The valve assembly is configured to be at least partially connected to and fixed to the connecting portion.

12. The mask according to claim 11, characterized in that The connection between at least part of the valve component and the connecting part is achieved by one or more of bonding, welding, and mechanical structural connection.

13. A mask with a valve, configured to provide protection for a device with the mask in different fields, characterized in that: The mask comprises: A mask body having a first side for contacting the user's face and a second side opposite to the first side, the mask body being configured to at least partially cover the user's nasal and / or oral airway entrances; a connecting portion having a third side adjacent to the second side and a fourth side opposite to the third side, the connecting portion being configured to exhaust airflow from the mask body or to deliver airflow into the mask body; a valve assembly located on the through-channel formed by extending from both sides of the connecting portion, the valve assembly comprising a valve and configured to allow airflow to pass through the connecting portion in one direction only; Wherein, the valve assembly forms at least one gas flow opening in the process of allowing one-way flow of gas, and the maximum area of ​​the flow opening is less than or equal to 38.485 square centimeters.

14. The mask according to claim 13, characterized in that The central axis of the valve assembly coincides with or is parallel to the central axis of the connecting portion.

15. The mask according to claim 13, characterized in that The distance between the valve assembly and the first side of the mask body is greater than one tenth of the distance between the second side of the mask body and the first side.

16. The mask according to claim 13, characterized in that The distance between the valve assembly and the fourth side of the connecting portion is less than or equal to the distance between the first side of the mask body and the fourth side of the connecting portion.

17. The mask according to claim 13, characterized in that The mask body is configured to be a universal size.

18. A mask with a valve, configured to provide protection for a device with the mask in different fields, characterized in that: The mask comprises: A mask body having a first side for contacting the user's face and a second side opposite to the first side, the mask body being configured to at least partially cover the user's nasal and / or oral airway entrances; a connecting portion having a third side adjacent to the second side and a fourth side opposite to the third side, the connecting portion being configured to exhaust airflow from the mask body or to deliver airflow into the mask body; a valve assembly located on the through-channel formed by extending from both sides of the connecting portion, the valve assembly comprising a valve and configured to allow airflow to pass through the connecting portion in one direction only; wherein the valve assembly has at least one thin region, the thin region having a thickness thinner than other portions of the valve assembly and configured to deform to allow airflow to pass through the valve assembly in one direction; Wherein, at least part of the thin area has a thickness less than or equal to 5 mm.

19. The mask according to claim 18, characterized in that The valve component has at least one slit, and the slit is disposed in the middle of the thin area or / and in an area where a plurality of thin areas are joined.

20. The mask according to claim 18, wherein: The thin region is configured so that its material or properties are not damaged during deformation.

21. The mask according to claim 18, wherein: The thin region is at least partially made of a flexible material.

22. The mask according to claim 18, wherein: The valve assembly and the connecting portion are not formed in one piece.

23. The mask according to claim 18, characterized in that The valve assembly is at least partially integrally formed with the connecting portion.

Images