Air leakage prevention mask

Abstract

The utility model relates to the technical field of medical masks, and provides an air leakage prevention mask which comprises a mask body. One ends of the face stickers are arranged on the mask body, the two face stickers are located on the two sides of the mask body respectively, the width of the end, close to the mask body, of each face sticker is larger than that of the end, away from the mask body, of each face sticker, and the face stickers and the mask body jointly cover face areas corresponding to teeth. By means of the technical scheme, the problems that in the prior art, due to the fact that the face sinks, the edge of the mask cannot be attached to the face, sealing is not tight, and a large amount of oxygen leaks are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical face mask technology, specifically to a leak-proof face mask. Background Technology

[0002] Those with missing teeth are a group in dire need of care. Besides severely impacting chewing function, missing teeth also cause changes in facial structure. This change also makes it difficult to achieve a tight seal and proper ventilation with a mask during medical procedures. When teeth are intact, the entire face is supported by the teeth and jawbone, appearing full and youthful. The mask fits snugly against the facial skin, allowing for easy and effective ventilation. However, when teeth are lost, especially when all teeth are gone, the alveolar bone atrophies, the face collapses, the mouth becomes sunken, the maxilla shifts backward, and the mandible protrudes forward. The edges of the mask cannot fit the face properly, and no matter how the mask's position is adjusted, the collapsed areas on both sides cannot be covered, resulting in a poor seal and significant oxygen leakage. When such patients experience respiratory depression or respiratory arrest during medical procedures, the mask prepared by the doctor will be ineffective in providing sufficient oxygen, rendering it useless and causing them to miss the golden period for rescue, with potentially disastrous consequences. Utility Model Content

[0003] This invention proposes an air-leak-proof face mask, which solves the problem in related technologies where facial concavity causes the edges of the face mask to not fit the face properly, resulting in poor sealing and a large amount of oxygen leakage.

[0004] The technical solution of this utility model is as follows: a leak-proof face mask, comprising: a face mask body; a face patch, one end of which is disposed on the face mask body, and two face patches are respectively located on both sides of the face mask body. The width of the end of the face patch closer to the face mask body is greater than the width of the end farther from the face mask body, and is used to cover the facial area corresponding to the teeth together with the face mask body.

[0005] Optionally, the mask body has a mounting portion and further includes:

[0006] A rod, rotatably mounted on the mounting portion, with the facing material wound around the rod.

[0007] An elastic element, one end of which is disposed on the rod and the other end of which is disposed on the mounting part, is used to provide elastic force for the rod to rotate so that the faceplate can be wound and retracted.

[0008] Optionally, the rod has a slot; it also includes:

[0009] A locking component is provided on the mounting part, which can be moved or swung, and engages with the slot after being moved or swung.

[0010] Optionally, one side of the adhesive is a rubber surface, and the other side is a smooth surface.

[0011] Optionally, the rod has a insertion groove, and the surface has an insertion part adapted to the insertion groove, the insertion part being detachably disposed within the insertion groove.

[0012] Optionally, the length of the insertion slot is greater than the length of the insertion part, and the insertion part is slidably disposed within the insertion slot.

[0013] Optionally, the face mask has a hollow structure with an internal air cavity. The air cavity has a first air hole and a second air hole. The side of the face mask with the first air hole is used to contact the face, and the second air hole is used to communicate with the air tube.

[0014] Optionally, the end of the faceplate closest to the main body of the mask and the end furthest from the main body of the mask have an arc-shaped transition.

[0015] Optionally, the faceplate has a notch, which is arc-shaped, for fitting against one side of the ear.

[0016] Optionally, the faceplate has a hanging opening located on one side of the notch for hanging on the ear.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] In this invention, the main body of the mask is the core component of the entire leak-proof mask, designed to cover the patient's mouth and nose area to provide oxygen or other medical gases. One end of the face patch is fixed to the main body, and two face patches are located on either side of the main body. The end of the face patch closer to the main body is wider, while the end further away gradually narrows. This design allows the face patch to better adapt to changes in facial contours, especially in cases of missing teeth. The design of the face patch takes into account the facial collapse characteristic of patients with missing teeth; its varying width allows for a better fit to different parts of the face, particularly in areas of depression caused by alveolar bone atrophy. The wider portion of the face patch covers a larger facial area, effectively preventing oxygen leakage. Even if the patient's facial shape changes, the face patch can fill these gaps through its width variation, improving the seal between the mask and the face. In practical use, the face patch gradually transitions from the wider end that connects to the main body of the mask to the narrower end, allowing it to fit closely to different parts of the face from the normal area to the collapsed area. Working together with the main body of the mask, it completely covers the facial area corresponding to the teeth, thereby effectively preventing oxygen leakage.

[0019] For patients with missing teeth, especially those whose faces have collapsed due to complete tooth loss and alveolar bone atrophy, this mask ensures adequate oxygen supply during medical procedures, especially in emergencies such as respiratory depression or cessation. This provides crucial time for resuscitation and significantly improves medical safety. The mask's special design conforms to the facial features of patients with missing teeth, fitting snugly to the sunken areas on both sides of the face. This effectively solves the problem of poor sealing and oxygen leakage caused by traditional masks where the edges don't fit snugly, greatly enhancing the mask's airtightness. This leak-proof mask is specifically designed for the vulnerable group of patients with missing teeth, meeting the needs of patients with varying degrees of tooth loss. It has a wide range of applications and provides an effective solution for patients with missing teeth who face difficulties with mask ventilation during medical procedures. Attached Figure Description

[0020] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the surface adhesive of this utility model.

[0024] In the diagram: 1. Main body of the mask; 101. Mounting part; 102. Groove; 2. Face patch; 201. Insertion part; 202. Air chamber; 203. First air hole; 204. Second air hole; 205. Notch; 206. Hanging opening; 3. Rod; 301. Slot; 302. Insertion slot; 4. Clip; 5. One-way valve; 6. Push part. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0026] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Reference Figures 1-3 An air-proof face mask is proposed, comprising: a face mask body 1; a face patch 2, one end of which is disposed on the face mask body 1. There are two face patches 2, which are respectively located on both sides of the face mask body 1. The width of the end of the face patch 2 closer to the face mask body 1 is greater than the width of the end farther away from the face mask body 1, and it is used to cover the facial area corresponding to the teeth together with the face mask body 1.

[0030] In this embodiment, the mask body 1 is the core component of the entire leak-proof mask, designed to cover the patient's mouth and nose area to provide oxygen or other medical gases. One end of the face patch 2 is fixed to the mask body 1, and two face patches 2 are located on either side of the mask body 1. The end of the face patch 2 closer to the mask body 1 is wider, while the end further away from the mask body 1 gradually narrows. This design allows the face patch 2 to better adapt to changes in facial contours, especially in cases of missing teeth. The design of the face patch 2 takes into account the facial collapse characteristic of patients with missing teeth; its varying width allows the face patch 2 to better fit different parts of the face, especially in areas of depression caused by alveolar bone atrophy. The wider portion of the face patch 2 can cover a larger facial area, effectively preventing oxygen leakage. Even if the patient's facial shape changes, the face patch 2 can fill these gaps through its width variation, improving the seal between the mask and the face. In actual use, the face patch 2 gradually transitions from the wider end that connects to the main body of the mask 1 to the narrower end, which can closely fit different parts of the face from the normal area to the collapsed area. Together with the main body of the mask 1, it completely covers the facial area corresponding to the teeth, thereby effectively preventing oxygen leakage.

[0031] For patients with missing teeth, especially those whose faces have collapsed due to complete tooth loss and alveolar bone atrophy, this mask ensures adequate oxygen supply during medical procedures, especially in emergencies such as respiratory depression or cessation. This provides crucial time for resuscitation and significantly improves medical safety. The special design of the face patch 2 is tailored to the facial features of patients with missing teeth, closely conforming to the collapsed areas on both sides of the face. Working in conjunction with the mask body 1, it effectively solves the problem of incomplete sealing and oxygen leakage caused by the edges of traditional masks not fitting the face properly, greatly enhancing the mask's airtightness. This leak-proof mask is specifically designed for the "toothless population," a group in dire need of care. It meets the needs of patients with varying degrees of tooth loss, has a wide range of applications, and provides an effective solution for toothless patients facing difficulties with mask ventilation during medical procedures.

[0032] Furthermore, the face mask body 1 has a mounting part 101 and also includes: a rod 3, which is rotatably mounted on the mounting part 101, the face mask 2 is wound around the rod 3, and an elastic member, one end of which is mounted on the rod 3 and the other end of which is mounted on the mounting part 101, for providing elastic force for the rod 3 to rotate so that the face mask 2 can be wound back.

[0033] In this embodiment, the mask body 1 is the main component of the entire leak-proof mask, used to cover the patient's mouth and nose area and provide oxygen or other medical gases. The mask body 1 has a mounting part 101 for mounting the rod 3 and the face patch 2. The rod 3 is rotatably mounted on the mounting part 101, and the face patch 2 is wound around the rod 3. The design of the rod 3 allows the face patch 2 to be unfolded or retracted as needed. One end of an elastic element is fixed to the rod 3, and the other end is fixed to the mounting part 101. The elastic element provides the elastic force required for the rotation of the rod 3, allowing the face patch 2 to be automatically wound and retracted when not needed. It should be noted that the face patch 2 is usually an adhesive sticker with a certain degree of adhesion; therefore, the elastic element can provide a certain retraction force. To improve the retraction effect, manual adjustment can be performed according to the actual retraction situation. A torsion spring can be used as the elastic element.

[0034] Working principle: When using the mask, face patch 2 unfolds from the rod 3, covering the facial area, especially the area corresponding to the teeth, through its wider end. The design of face patch 2 allows it to better adapt to changes in facial contours, particularly addressing facial depressions caused by missing teeth. When face patch 2 is no longer needed, or when its position needs adjustment, it can be gently pulled back. Due to the elastic element, face patch 2 will automatically roll back onto the rod 3 for easy management and reuse. Through its varying width and ability to adapt to facial contours, face patch 2 fills in facial depressions caused by missing teeth, thereby improving the seal between the mask and the face and reducing oxygen leakage.

[0035] Furthermore, the rod 3 has a slot 301; it also includes a locking member 4, which is movable or swingable on the mounting part 101. After the locking member 4 moves or swings, it engages with the slot 301 to restrict further rotation of the rod 3, so that the mask remains at the opened size.

[0036] In this embodiment, the rod 3 is rotatably mounted on the mounting part 101, and the face mask 2 is wound around the rod 3. The rod 3 has a slot 301 for engaging with the locking piece 4 to lock the position of the face mask 2. The locking piece 4 is movable or swinging on the mounting part 101. Its function is to limit the further rotation of the rod 3 after the face mask 2 is unfolded to the appropriate position by engaging with the slot 301 on the rod 3, thereby maintaining the face mask 2 in its unfolded state. Since different patients have different face sizes, the unfolded face mask 2 is of different sizes to adapt to different patients' faces. The engagement of the locking piece 4 with the slot 301 fixes the rod 3, thereby maintaining the unfolded size of the face mask 2. The design of the locking piece 4 effectively keeps the mask in the adjusted state, improves the stability of the mask during use, and provides a continuous and reliable oxygen supply to the patient. The locking piece 4 can be equipped with a push part 6 for convenient manual operation.

[0037] Furthermore, one side of the face patch 2 is a rubber side, and the other side is a smooth side. The rubber side can better fit the patient's face, while the smooth side can better achieve roll-up and storage.

[0038] In this embodiment, one side of the face patch 2 is a rubber side, which directly contacts the patient's face during use. The rubber material has good flexibility and a certain degree of adhesion, allowing it to better conform to the contours of the face, especially in cases where patients with missing teeth have facial depressions. The rubber side provides a better fit, thereby improving the mask's seal. The smooth side facilitates winding: The other side of the face patch 2 is a smooth side, which contacts the rod 3 and is wound around it when the face patch 2 is not in use or needs to be stored. The smooth surface design reduces friction between the face patch 2 and the rod 3, as well as between different parts of the face patch 2, allowing the face patch 2 to be wound and unfolded more smoothly, facilitating quick organization and storage by medical staff. This not only saves time and space but also keeps the mask neat and orderly, improving the management efficiency of medical equipment. Furthermore, it reduces the likelihood of wrinkles or damage, extending the lifespan of the face patch 2.

[0039] Furthermore, the rod 3 has a insertion groove 302, and the faceplate 2 has an insertion part 201 adapted to the insertion groove 302. The insertion part 201 is detachably disposed in the insertion groove 302. The mounting part 101 has a slot 102. The insertion part 201 is inserted into the insertion groove 302 and enters the middle of the rod 3 after passing through the slot 102.

[0040] In this embodiment, the face patch 2 has an insertion part 201 that matches an insertion slot 302 on the rod 3. The face patch 2 can be inserted into the insertion slot 302 of the rod 3 through the insertion part 201, thereby fixing it to the rod 3. The insertion part 201 and the insertion slot 302 are detachable, allowing the face patch 2 to be easily installed or removed from the rod 3. This design allows the face patch 2 to be replaced or cleaned as needed without replacing the entire face mask. The matching design of the insertion part 201 and the insertion slot 302 allows for quick installation and removal of the face patch 2, improving its flexibility. When the face patch 2 needs to be replaced or cleaned, it can be directly removed without affecting the use of the entire face mask. The detachable design allows the face patch 2 to be easily removed for individual cleaning and disinfection, avoiding dirt or bacterial residue on the face patch 2, improving hygiene standards, and protecting the patient's health. If the face patch 2 becomes damaged or ages during use, it can be quickly replaced with a new one without replacing the entire mask assembly, reducing maintenance costs and time. Through the engagement of the insertion part 201 and the insertion slot 302, the face patch 2 is more securely fixed to the rod 3 during use, reducing sealing problems caused by loosening or detachment, and improving the durability and reliability of the mask. Medical staff can more quickly install and remove the face patch 2, simplifying the operation process, reducing workload, and improving work efficiency. In summary, the leak-proof mask with its insertion design between the face patch 2 and the rod 3 not only improves the flexibility and hygiene standards of mask use but also simplifies the operation process, reduces maintenance costs, and provides safer and more efficient medical care for patients with missing teeth.

[0041] Furthermore, the length of the insertion slot 302 is greater than the length of the insertion part 201, and the insertion part 201 is slidably disposed in the insertion slot 302, and the position of the faceplate 2 can be adjusted after sliding.

[0042] In this embodiment, the length of the insertion slot 302 is greater than the length of the insertion part 201, meaning that the insertion part 201 can slide inside the insertion slot 302. By sliding the insertion part 201, the position of the face patch 2 can be adjusted, allowing the face patch 2 to better adapt to the specific facial features of different patients. When using the mask, medical staff can adjust the position of the face patch 2 by sliding the insertion part 201 of the face patch 2 according to the patient's facial characteristics, ensuring that the face patch 2 accurately covers the required area and achieves the best sealing effect. Adjusting the position of the face patch 2 by sliding the insertion part 201 ensures that the face patch 2 better conforms to the patient's facial contours, especially in facial depressions caused by missing teeth, thereby improving the sealing performance between the mask and the face and reducing oxygen leakage. The sliding adjustment function allows the face patch 2 to adapt to different facial shapes of different patients, improving the versatility and adaptability of the mask, allowing the same mask to serve more types of patients. Adjusting the position of the face patch 2 reduces unnecessary pressure on the face and improves the patient's wearing comfort. This function is especially important for patients who need to wear masks for extended periods. Medical staff can easily adjust the position of the face mask 2 by sliding the connector 201, simplifying the operation process, reducing the time required to adjust the face mask 2, and improving work efficiency. Because the connector 201 can slide within a certain range, even for first-time users or in emergencies, medical staff can quickly find the appropriate position of the face mask 2, reducing misoperation caused by improper positioning. Better sealing and more precise position adjustment mean that patients can receive a more effective oxygen supply, which is especially important for patients with breathing difficulties or requiring emergency care, helping to improve medical outcomes and the success rate of resuscitation. In summary, through the sliding adjustment design of the connector 201 within the connector slot 302, this leak-proof mask not only improves the mask's sealing performance and patient comfort, but also enhances the adaptability and ease of operation of the device, providing safer and more efficient medical protection for patients with missing teeth.

[0043] Furthermore, the face patch 2 has a hollow structure with an air cavity 202 inside. The air cavity 202 has a first air hole 203 and a second air hole 204. The side of the face patch 2 with the first air hole 203 is used to contact the face, and the second air hole 204 is used to connect to the air tube. An auxiliary air extraction device can be connected to the second air hole 204 to extract air from the air cavity 202, thereby creating a slight negative pressure between the end face of the face patch 2 with the first air hole 203 and the face, resulting in a better fit.

[0044] In this embodiment, the face patch 2 is designed as a hollow structure, containing an air cavity 202. The air cavity 202 has a first air hole 203 and a second air hole 204. Preferably, multiple first air holes 203 can be provided, evenly and spaced apart on the end face of the face patch 2 used to cover the face. The second air hole 204 is used to connect to an air tube or an auxiliary suction device. By connecting the second air hole 204 to the auxiliary suction device, air can be drawn from the air cavity 202. A small negative pressure zone will be formed between the end face of the face patch 2 with the first air hole 203 and the face. Preferably, a one-way valve 5 can be provided in the second air hole 204 so that the connection between the auxiliary suction device and the second air hole 204 can be disconnected after the negative pressure is drawn, reducing the burden on the face mask body 1. This negative pressure effect allows the face patch 2 to better fit the face, maintaining good sealing even when the face has depressions or unevenness. By forming a negative pressure inside the face patch 2, the sealing performance between the face patch 2 and the face can be greatly improved. Even in areas of facial depression caused by missing teeth, Face Patch 2 maintains a tight fit, minimizing oxygen leakage and ensuring an effective oxygen supply. Its micro-negative pressure design allows Face Patch 2 to better adapt to the facial features of different patients, especially those with significant changes in facial contours. Face Patch 2's superior fit enhances the mask's versatility and adaptability. Because Face Patch 2 uses negative pressure to better conform to the face, it reduces the possibility of oxygen leakage, ensuring patients receive sufficient oxygen, which is crucial, especially during emergency situations or surgery. In summary, through its hollow internal structure and air chamber 202 design, Face Patch 2 utilizes micro-negative pressure to enhance its fit to the face. This leak-proof mask improves the device's adaptability, providing safer and more efficient medical care for patients with missing teeth.

[0045] Furthermore, the end of the face patch 2 closest to the mask body 1 and the end furthest from the mask body 1 form an arc transition.

[0046] In this embodiment, the end of the face patch 2 closest to the mask body 1 and the end furthest from the mask body 1 are designed with an arc-shaped transition. This means that the two ends of the face patch 2 are not right angles or straight lines, but are connected by a smooth curve. This arc-shaped transition design allows the face patch 2 to better adapt to the contours of the face, especially in concave or uneven areas of the face, where the arc design helps it fit the face more closely. The arc-shaped transition design reduces the sharp edges when the face patch 2 contacts the face, thereby reducing pressure on the face and improving wearing comfort. This is especially important for patients who need to wear the mask for extended periods, as it can reduce discomfort during wear. Right angles or straight edges may leave obvious pressure marks on the face after prolonged wear, while the arc-shaped transition design can reduce this phenomenon and avoid unnecessary damage to the facial skin. The arc-shaped transition design not only improves the functionality of the face patch 2 but also enhances its aesthetics. The smooth curve looks more harmonious, reducing the mechanical feel of the device and making it more psychologically acceptable to patients. In summary, through the arc-shaped transition design at both ends of the face patch 2, this leak-proof face mask not only improves the sealing performance between the face patch 2 and the face and the patient's comfort, but also reduces the pressure and indentations on the face, providing a safer, more comfortable and efficient medical guarantee for patients with missing teeth.

[0047] Furthermore, the face patch 2 has a notch 205, which is arc-shaped and designed to fit against one side of the ear.

[0048] In this embodiment, the face patch 2 is designed with an arc-shaped notch 205. The notch 205 is mainly used to fit the side of the patient's ear and adapt to the facial contours around the ear. The face patch 2 can be adjusted more flexibly to ensure that the face patch 2 can accurately cover the required facial area without affecting the function of the ear. Through the arc-shaped notch 205, the face patch 2 will not directly compress the ear, reducing the pressure on the ear and avoiding ear pain or pressure marks that may be caused by wearing the mask for a long time.

[0049] Furthermore, the face patch 2 has a hanging opening 206, which is located on one side of the notch 205 and is used to hang on the ear.

[0050] In this embodiment, the face patch 2 is designed with a hook 206, which is located on one side of the arc-shaped notch 205 and is specifically designed to be hung on the ear. This design allows the face patch 2 to not only fit the face better, but also to be fixed in position by hanging it on the ear. By hanging the face patch 2 with the hook 206 on the ear, it is ensured that the face patch 2 will not easily move or fall off during use, and its position remains stable even when the patient is moving. The hook 206 is typically designed with a certain degree of elasticity or adjustability to accommodate different ear and face sizes, allowing the face patch 2 to better fit the faces of different patients.

[0051] Specifically, when the patient's face is severely sunken, stable adhesion can be achieved by using only the face patch 2 and the negative pressure adsorption of the first pore 203. After surgery or an emergency, prolonged negative pressure may cause discomfort to the patient, so the negative pressure adsorption can be turned off. If the mask becomes unstable during the patient's moderate activity, more of the face patch 2 can be unfolded so that the hanging port 206 can be attached to the ear for auxiliary fixation. When the mask is in a relatively stable state, the hanging port 206 can also be removed, which improves adaptability and convenience.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leak-proof face mask, characterized in that, include: The main body of the mask (1); A face patch (2) is provided at one end on the mask body (1). There are two face patches (2) and they are located on both sides of the mask body (1). The width of the end of the face patch (2) closer to the mask body (1) is greater than the width of the end away from the mask body (1). It is used to cover the facial area corresponding to the teeth together with the mask body (1).

2. The leak-proof face mask according to claim 1, characterized in that, The mask body (1) has a mounting part (101) and further includes: The rod (3) is rotatably mounted on the mounting part (101), and the faceplate (2) is wound around the rod (3). An elastic element, one end of which is disposed on the rod (3) and the other end of which is disposed on the mounting part (101), is used to provide the rod (3) to rotate so that the faceplate (2) can be wound and retracted.

3. The leak-proof face mask according to claim 2, characterized in that, The rod (3) has a slot (301); it also includes: The card (4) is movable or swingable on the mounting part (101), and after the card (4) is moved or swingable, it engages with the card slot (301).

4. The leak-proof face mask according to claim 3, characterized in that, The faceplate (2) has a rubber surface on one side and a smooth surface on the other side.

5. A leak-proof face mask according to claim 4, characterized in that, The rod (3) has a plug groove (302), and the faceplate (2) has a plug part (201) adapted to the plug groove (302), and the plug part (201) is detachably disposed in the plug groove (302).

6. A leak-proof face shield according to claim 5, characterized in that, The length of the insertion slot (302) is greater than the length of the insertion part (201), and the insertion part (201) is slidably disposed in the insertion slot (302).

7. A leak-proof face mask according to claim 6, characterized in that, The face mask (2) has a hollow structure with an air cavity (202) inside. The air cavity (202) has a first air hole (203) and a second air hole (204). The side of the face mask (2) with the first air hole (203) is used to contact the face, and the second air hole (204) is used to communicate with the trachea.

8. A leak-proof face mask according to claim 7, characterized in that, The end of the face patch (2) near the face mask body (1) and the end away from the face mask body (1) have an arc-shaped transition.

9. A leak-proof face mask according to claim 8, characterized in that, The face patch (2) has a notch (205) which is arc-shaped and is used to fit against one side of the ear.

10. A leak-proof face mask according to claim 9, characterized in that, The face mask (2) has a hanging opening (206) located on one side of the notch (205) for hanging on the ear.

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