Disposable nose wing pad for breathing mask for anti-G training of pilot

Abstract

The utility model relates to a disposable nose wing pad for a breathing mask for anti-G training of a pilot, which comprises a main body part, an elastic part and a sealing part, and the main body part is made of a medical grade silica gel material and is crescent; the supporting part is made of polypropylene or polycarbonate engineering plastics, the supporting part comprises a plurality of plastic supporting strips which are arranged in a uniform cross section mode, the supporting strips are evenly distributed in the main body part in a radial mode, and the included angle between every two adjacent supporting strips is 30 + / -2 degrees; wherein a double-layer sealing lip edge is arranged on one side, in contact with the face, of the main body part, the double-layer sealing lip edge comprises an inner-layer lip edge and an outer-layer lip edge, the inner-layer lip edge is made of a medical grade silica gel material with the thickness of 0.8 mm + / -0.1 mm, and the outer-layer lip edge is made of an elastic silica gel material with the thickness of 1.8 mm + / -0.1 mm. According to the breathing mask, the sealing performance, comfort and sanitation of the breathing mask for the anti-G training of the pilot can be improved.

Description

Technical Field

[0001] This invention belongs to the field of aviation protective equipment technology, specifically relating to a disposable nose pad for a breathing mask used in pilot anti-G training. Background Technology

[0002] In the aviation field, pilot safety and comfort are paramount. Anti-G training is a crucial component of pilots' daily training, and the performance of the breathing mask, as a key piece of equipment, directly impacts training effectiveness and the pilot's physical condition. During anti-G training, the nose pad of the breathing mask plays a critical role, but currently available breathing mask nose pads have numerous problems that urgently need to be addressed.

[0003] First, insufficient sealing is a major problem. Existing nose pads on breathing masks often fail to create a proper seal when fitting against the pilot's face. This is primarily due to the inadequate structural design of the nose pads, which cannot closely conform to the facial contours of different pilots. Each person's facial features, especially the shape and size around the nose, vary, and traditional nose pads, with their single, fixed structure, cannot accommodate this diversity. During anti-G training, pilots experience significant G-forces; if the nose pads do not seal well, gas leakage can occur, affecting the normal air supply to the breathing mask, thus impacting the pilot's breathing and potentially leading to dangerous situations such as hypoxia, seriously threatening flight safety.

[0004] Secondly, comfort is lacking. The current selection and design of nose pad materials fail to adequately consider the needs of pilots wearing them for extended periods. During prolonged anti-G training, pilots need to wear breathing masks continuously; if the nose pad is uncomfortable, it will cause discomfort. On one hand, some nose pads use materials that are too hard, easily creating pressure when in contact with the face, leading to facial pain and swelling with prolonged wear. On the other hand, their thickness and shape are poorly designed, failing to effectively distribute pressure, making it difficult for pilots to concentrate during training and affecting training effectiveness.

[0005] Furthermore, hygiene issues cannot be ignored. Due to the high intensity and frequency of training, the nose pads of the breathing mask need to be used frequently. However, most existing nose pads are not disposable, and after repeated use, they are prone to harboring bacteria and dirt. Even with cleaning and disinfection, it is difficult to completely eliminate the hidden dangers, posing a potential threat to the pilot's health. In addition, traditional cleaning and disinfection methods are not only cumbersome, but may also damage the structure and performance of the nose pads, further shortening their lifespan.

[0006] Numerous challenges have been encountered in attempting to address these issues. For instance, improving the seal requires balancing adaptation to different facial contours with ensuring a simple and easy-to-manufacture structure, presenting significant challenges in design and material selection. Enhancing comfort necessitates finding materials that are both soft and comfortable while providing adequate support, along with optimizing the structural design, requiring extensive experimentation and research. Furthermore, addressing hygiene concerns necessitates developing cost-effective and stable disposable nasal pads, overcoming difficulties in material selection, manufacturing processes, and other areas.

[0007] In summary, the nose pads of current anti-G training breathing masks for pilots have problems with sealing, comfort, and hygiene, and a completely new design is urgently needed to solve these problems in order to ensure pilot safety and training effectiveness. Summary of the Invention

[0008] One objective of this invention is to provide a disposable nose pad for a breathing mask used in anti-G training for pilots, which can solve the problems of existing nose pads being made of materials that are not skin-friendly and whose sizes do not fit different facial contours, resulting in poor comfort and sealing.

[0009] Another objective of this invention is to address the problem that the edges of the nose pads are too hard, easily scratching the face and affecting the user experience and safety.

[0010] Another objective of this invention is to solve the problem of stuffiness and dampness around the nose when wearing the device, which affects comfort and hygiene.

[0011] Another objective of this invention is to solve the problem that the nasal pad does not fit tightly to the face, is prone to slipping, and affects sealing and stability.

[0012] Another objective of this invention is to address the problem that users may have difficulty distinguishing between single-use and disposable products, which could lead to hygiene and safety issues if the products are reused.

[0013] Another objective of this invention is to solve the problem that the nose pad does not adhere firmly to the face and is prone to falling off during flight, thus affecting its performance.

[0014] Another objective of this invention is to solve the problem that the connection between the support part and the breathing mask is too rigid, causing discomfort and affecting comfort during wearing or use.

[0015] Another objective of this invention is to solve the problems of unstable connection between the nasal pad and the breathing mask, easy detachment, and inconvenient installation and disassembly.

[0016] Another objective of this invention is to address the problems of potential harm to human health and unstable product quality caused by the use of substandard materials.

[0017] Another objective of this invention is to solve the problems of complex installation, difficult disassembly, and limited connection methods of mechanical bayonet structures.

[0018] Therefore, the present invention provides a disposable nose pad for a breathing mask used in anti-G training for pilots, comprising:

[0019] The main body is made of medical-grade silicone material, crescent-shaped, with a length of 25mm±1mm, a width of 21mm±1mm, and a height of 6mm±1mm; and

[0020] The supporting part is made of polypropylene or polycarbonate engineering plastic. The supporting part includes multiple plastic support strips with equal cross-sections. The width of the support strip is 1.5mm±0.1mm and the thickness is 0.8mm±0.1mm. The support strips are evenly radially distributed inside the main body. The included angle between two adjacent support strips is 30°±2°.

[0021] The main body has a double-layer sealing lip on the side that contacts the face. The double-layer sealing lip includes an inner lip and an outer lip. The inner lip is made of medical-grade silicone material with a thickness of 0.8mm±0.1mm, and the outer lip is made of elastic silicone material with a thickness of 1.8mm±0.1mm.

[0022] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body has a chamfer at the edge, and the radius of the chamfer is 0.5mm±0.1mm.

[0023] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body is provided with multiple ventilation holes, the diameter of the ventilation holes is 0.5mm±0.1mm, and the distance between two adjacent ventilation holes is 2mm±0.1mm.

[0024] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body has a fine texture on the side that contacts the face, the fine texture having a depth of 0.1mm-0.2mm and a width of 0.2mm-0.3mm.

[0025] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the surface of the main body is marked with a "disposable" label by screen printing, and the font height of the label is 3mm ± 0.1mm.

[0026] Preferably, the disposable nose pad of the breathing mask for pilot anti-G training further includes an adhesive silicone layer disposed on the side of the main body that contacts the face.

[0027] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the supporting part is provided with a cushioning pad near the connection of the breathing mask. The cushioning pad is made of silicone material with a hardness of Shore A30-40 and a thickness of 1mm±0.1mm.

[0028] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the nose pad is connected to the breathing mask via a mechanical latch structure. The mechanical latch structure includes a slot at the edge of the main body and a tenon on the breathing mask. The slot has a depth of 3.5mm ± 0.1mm and a width of 2mm ± 0.1mm. The tenon has a length of 3.5mm ± 0.1mm and a width of 2mm ± 0.1mm. An anti-slip rubber strip is embedded in the slot. The anti-slip rubber strip has a width of 1mm ± 0.1mm, a thickness of 0.6mm ± 0.1mm, and a coefficient of friction greater than 0.7.

[0029] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the medical-grade silicone material meets the ISO10993 biocompatibility standard, and the polypropylene or polycarbonate engineering plastic meets the ISO13485 medical device quality management system requirements.

[0030] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the nose pad is connected to the breathing mask via a Velcro structure.

[0031] The present invention has at least the following beneficial effects:

[0032] (1) Material and size design of the main body: Medical-grade silicone material is used, which is skin-friendly and has low skin irritation, thus improving wearing comfort. The crescent shape and precise size design can better fit the facial contours of different pilots. The double-layer sealing lip further enhances the sealing performance, effectively preventing gas leakage and ensuring smooth and safe breathing for pilots during anti-G training.

[0033] (2) Edge chamfering design of the main body: The edge chamfering design makes the edge of the nose pad more rounded and smooth, avoiding scratching the pilot's face during wear, improving the safety and comfort of use, allowing the pilot to focus more on training without worrying about discomfort caused by the edge of the nose pad.

[0034] (3) Ventilation hole design of the main body: The ventilation hole effectively improves the air circulation around the nose, reduces stuffiness and humidity, enhances wearing comfort, and also helps to maintain hygiene, reduce the possibility of bacterial growth, and provide pilots with a healthier use environment.

[0035] (4) Micro-texture design of the main body: The micro-texture increases the friction between the nose pad and the face, making the nose pad more stable and less prone to slipping during wear, ensuring sealing and stability, so that pilots do not need to frequently adjust the position of the nose pad during training, thus improving training efficiency.

[0036] (5) Design of the “single use” sign in the main body: The “single use” sign makes it clear to users at a glance, avoids repeated use due to misjudgment, ensures hygiene and safety, reduces the risk of cross-infection, and provides protection for the health of pilots.

[0037] (6) Adhesive silicone layer design: The adhesive silicone layer makes the nose pad fit more firmly to the face and will not easily fall off during flight, ensuring the effectiveness of use. Pilots can use it with peace of mind in various flight postures without worrying about the nose pad falling off and affecting training and safety.

[0038] (7) Support cushion design: The cushion effectively alleviates the rigidity of the connection between the support part and the breathing mask, reduces discomfort during wearing or use, improves comfort, allows pilots to wear it comfortably for a long time, and improves the continuity and effectiveness of training.

[0039] (8) Mechanical bayonet structure connection: The mechanical bayonet structure connection is stable and not easy to fall off. The design of the slot and tenon makes installation and disassembly more convenient. The anti-slip rubber strip in the slot further enhances the stability of the connection and improves the convenience and reliability of use.

[0040] (9) Material standard requirements: Materials that meet the standards ensure the safety and quality stability of the product. Medical-grade silicone materials meet biocompatibility standards and will not harm human health. Engineering plastics meet the requirements of the medical device quality management system, ensuring the durability and reliability of the product.

[0041] (10) Adopting Velcro structure connection: Velcro structure provides a simple and convenient connection method. Compared with mechanical bayonet structure, it is easier to install and remove, and provides users with more connection options to meet the usage habits and needs of different users. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the outer side of the breathing mask for pilot anti-G training provided in this application;

[0043] Figure 2 A schematic diagram of one embodiment of the disposable nasal pad provided in this application;

[0044] Figure 3 A lateral view of the double-layer sealing lip of the disposable nasal pad provided in this application;

[0045] Figure 4 A schematic diagram of another embodiment of the disposable nasal pad provided in this application;

[0046] Figure 5 A schematic diagram of yet another embodiment of the disposable nasal pad provided in this application;

[0047] Figure 6 A schematic diagram of yet another embodiment of the disposable nasal pad provided in this application;

[0048] Figure 7a A schematic diagram of one embodiment of the inner side of a pilot anti-G training breathing mask provided in this application; and

[0049] Figure 7b This is a schematic diagram of yet another embodiment of the disposable nasal pad provided in this application, and... Figure 7a The corresponding breathing mask.

[0050] Reference numerals: 1: Breathing mask; 2: Straps; 3: Oxygen tubing; 4: Nose pad; 401: Main body; 402: Supporting part; 4011: Inner lip; 4012: Outer lip; 403: Vent hole; 404: Microtexture; 4021: Cushion; 408: Slot; 11: Nose part of the breathing mask; 12: Tenon. Detailed Implementation

[0051] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0052] like Figures 1-6 as well as Figure 7a As shown in Figure 7b, this application provides a disposable nose pad for a breathing mask used in anti-G training for pilots, comprising: a main body made of medical-grade silicone material, crescent-shaped, with a length of 25mm±1mm, a width of 21mm±1mm, and a height of 6mm±1mm; and a support part made of polypropylene or polycarbonate engineering plastic, wherein the support part includes multiple plastic support strips with equal cross-sections, the support strips having a width of 0.5mm±0.1mm and a thickness of 0.8mm±0.1mm, the support strips being evenly radially distributed inside the main body, and the included angle between two adjacent support strips being 30°±2°; wherein the main body has a double-layer sealing lip on the side in contact with the face, the double-layer sealing lip including an inner lip and an outer lip, the inner lip being made of medical-grade silicone material with a thickness of 0.8mm±0.1mm, and the outer lip being made of elastic silicone material with a thickness of 1.8mm±0.1mm.

[0053] This application uses medical-grade silicone material that meets ISO10993 biocompatibility standards to make the main body, ensuring safety and no irritation when in contact with the pilot's face. This silicone material has good flexibility and elasticity, can adapt to different facial contours, and ensures comfort during long-term wear.

[0054] The main body, 401, is designed in a crescent shape, with a length controlled at 25mm ± 1mm, a width at 21mm ± 1mm, and a height at 6mm ± 1mm. Through extensive collection and analysis of human facial data, it was determined that these dimensions would fit well with the contours around the nose of most pilots. During manufacturing, a high-precision injection molding process is employed to ensure dimensional accuracy.

[0055] The support component 402 is made of polypropylene or polycarbonate engineering plastic, forming multiple uniform cross-section plastic support strips with a width of 1.5mm ± 0.1mm and a thickness of 0.8mm ± 0.1mm. These support strips are evenly radially distributed inside the main body, with an included angle of 30° ± 2° between adjacent support strips. The support strips are tightly bonded to the silicone material of the main body using an integrated molding process, enhancing the structural strength of the main body and preventing deformation during use. The number of support strips does not exceed 10.

[0056] The main body features a double-layered sealing lip on the side that contacts the face. The inner lip, 4011, is made of medical-grade silicone material with a thickness of 0.8mm ± 0.1mm, which is relatively firm and provides an initial seal. The outer lip, 4012, is made of elastic silicone material with a thickness of 1.8mm ± 0.1mm, which is soft and conforms better to the facial contours, further enhancing the seal. During manufacturing, a secondary injection molding process is used to tightly connect the two lip layers to the main body.

[0057] When the pilot wears the breathing mask 1, it is secured to the pilot's face via straps 2. The oxygen tube 3 delivers oxygen into the mask to ensure the pilot's breathing. A pair of nose pads 4 are positioned on either side of the nose section 11 of the mask. The main body 401 of the nose pad 4 contacts the face; its crescent-shaped design and precise dimensions allow it to naturally conform to the area around the nose. Support strips in the support section 402 provide structural support, ensuring the main body does not easily deform under external forces. The double-layer sealing lips then function; the inner lip first forms an initial seal upon contact with the face, while the outer lip adapts to the facial contours, filling any gaps and effectively preventing gas leakage, thus ensuring normal air supply to the breathing mask 1.

[0058] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body has a chamfer at the edge, and the radius of the chamfer is 0.5mm ± 0.1mm. The chamfer structure is formed directly during injection molding without additional processing steps, ensuring the consistency and accuracy of the chamfer dimensions.

[0059] The main body and chamfers are manufactured in one step using injection molding. During mold manufacturing, the mold surface of the chamfered part is finely ground and polished to ensure that the chamfered surface is smooth, without burrs or defects after molding.

[0060] When pilots wear nose pads, the chamfered edges prevent the pads from creating sharp right angles in contact with the face, instead creating rounded curves. This prevents the pads from scratching the skin even with slight facial movements, effectively improving safety and comfort and allowing pilots to focus more during training.

[0061] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body is provided with multiple ventilation holes, the diameter of which is 0.5mm±0.1mm, and the distance between two adjacent ventilation holes is 2mm±0.1mm. Multiple ventilation holes 403 with a diameter of 0.5mm±0.1mm are provided in the main body, and the distance between adjacent ventilation holes is 2mm±0.1mm.

[0062] A corresponding core is set inside the mold. During the injection molding process, the core occupies the position of the vent hole. After injection molding is completed, the core is removed, thus forming the vent hole. To ensure the dimensional accuracy and surface quality of the vent hole, the machining accuracy and surface finish of the core are required to be extremely high.

[0063] When a pilot wears breathing mask 1, the heat and moisture generated by breathing accumulate between the nose pad and the face. The presence of vents allows air to circulate between the nose pad and the face, and the heat and moisture can be expelled through the vents, effectively improving the stuffiness and humidity around the nose, enhancing wearing comfort, and also reducing the environment for bacterial growth, which is beneficial for maintaining hygiene.

[0064] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the main body has a micro-texture on the side that contacts the face, the micro-texture having a depth of 0.1mm-0.2mm and a width of 0.2mm-0.3mm. The micro-texture is created on the mold surface using mold surface treatment technology, and then replicated onto the surface of the main body during injection molding.

[0065] Precision machining techniques such as photolithography or etching are used to create micro-textures on the surface of a mold. In the photolithography process, the designed texture pattern is transferred to the mold surface through steps such as coating, exposure, and development of photoresist; the etching process uses chemical corrosion or physical etching methods to remove unwanted materials from the mold surface, forming micro-textures 404.

[0066] When the nose pad comes into contact with the face, the fine texture increases the friction between them. During anti-G training, even with some facial movement, the nose pad can remain in place due to the friction provided by the fine texture, preventing it from slipping. This ensures the sealing and stability of the breathing mask, eliminating the need for pilots to frequently adjust the nose pad position and improving training efficiency.

[0067] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the surface of the main body is marked with a "disposable" label using a screen printing process, and the font height of the label is 3mm ± 0.1mm. The screen printing process uses environmentally friendly and wear-resistant ink to ensure that the label is clear and durable.

[0068] After the main body is injection molded, its surface is cleaned to ensure it is free of oil and impurities. Then, the screen printing stencil is fixed on the screen printing machine, and the prepared ink is poured into the stencil. Through the pressure of the squeegee, the ink is transferred through the pattern on the stencil to the surface of the main body, forming a clear "disposable" mark.

[0069] When using a breathing mask, pilots or relevant personnel can directly see the clear "single use" marking on the main body surface, making it clear that the nose pad can only be used once, avoiding reuse due to misjudgment, effectively ensuring hygiene and safety, and reducing the risk of cross-infection.

[0070] Preferably, the disposable nose pad for the anti-G training breathing mask for pilots further includes an adhesive silicone layer, which is disposed on the side of the main body that contacts the face. The adhesive silicone layer is made of silicone material, which has good adhesion and stability, allowing the nose pad to fit tightly against the face without harming the skin.

[0071] A coating process is used to evenly apply adhesive silicone to the side of the main body that contacts the face. Before coating, the surface of the main body is pretreated to improve the adhesion between the silicone layer and the main body. After coating, a curing process is used to cure the silicone layer, forming a stable adhesive structure.

[0072] When a pilot wears a breathing mask, the adhesive silicone layer comes into contact with the facial skin, using its adhesive properties to firmly attach the nose pads to the face. During flight, even if the pilot makes various movements, the nose pads remain in place and will not easily fall off, ensuring effectiveness and allowing the pilot to use them with peace of mind in various flight postures.

[0073] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the supporting part has a cushioning pad near the connection of the breathing mask. The cushioning pad is made of silicone material with a Shore A hardness of 30-40 and a thickness of 1mm ± 0.1mm. A cushioning pad 4021 is also provided in the supporting part near the connection of the breathing mask. The cushioning pad is made of silicone material with a Shore A hardness of 30-40 and a thickness of 1mm ± 0.1mm. The cushioning pad is manufactured by injection molding to ensure its dimensional accuracy and material properties.

[0074] First, a mold matching the shape and size of the cushioning pad is manufactured. The required silicone material is then injected into the mold and cured under high temperature and pressure. After molding, the cushioning pad undergoes quality inspection to ensure that its hardness, thickness, and other parameters meet design requirements.

[0075] When a pilot wears a breathing mask, the support structure connects to the mask. At the connection point, a cushioning pad acts as a buffer. Since the breathing mask may be subjected to various external forces during use, such as the pilot's head movement and vibrations during flight, the cushioning pad can mitigate the impact of these forces on the support structure, reduce the rigidity of the connection, decrease discomfort during wear or use, and improve comfort, allowing the pilot to wear it comfortably for extended periods.

[0076] Preferably, in the disposable nose pad for the anti-G training breathing mask for pilots, the nose pad is connected to the breathing mask via a mechanical latching structure. The mechanical latching structure includes a groove located at the edge of the main body and a tenon located on the breathing mask. The groove has a depth of 3.5mm ± 0.1mm and a width of 2mm ± 0.1mm. The tenon has a length of 3.5mm ± 0.1mm and a width of 2mm ± 0.1mm. An anti-slip rubber strip is embedded in the groove. The anti-slip rubber strip has a width of 1mm ± 0.1mm, a thickness of 0.6mm ± 0.1mm, and a coefficient of friction greater than 0.7. The nose pad is connected to the breathing mask via the mechanical latching structure, which includes a groove 408 located at the edge of the nose pad and a tenon 12 located on the breathing mask.

[0077] The slots and latches are injection molded during the manufacturing processes of the nose pads and breathing masks, respectively. The anti-slip rubber strips are manufactured using a compression molding process and then embedded into the slots. Throughout the manufacturing process, the dimensional accuracy of each component is strictly controlled to ensure the precise fit of the slots and latches.

[0078] During installation, align the latch on the breathing mask with the slot on the edge of the nose pad, and then firmly insert the latch into the slot. The length of the latch is slightly greater than the depth of the slot. During insertion, the latch will undergo a certain elastic deformation, returning to its original shape after entering the slot, forming a tight fit. The anti-slip rubber strip inside the slot further increases friction, preventing the latch from coming out of the slot. Disassembly is simple; just pull the latch out of the slot. This connection method is secure and reliable, preventing it from easily falling off and ensuring the stability of the connection between the nose pad and the breathing mask during use.

[0079] Preferably, in the disposable nose pad of the respirator for pilot anti-G training, the medical-grade silicone material conforms to the ISO 10993 biocompatibility standard, and the polypropylene or polycarbonate engineering plastic conforms to the ISO 13485 medical device quality management system requirements. Using medical-grade silicone material conforming to the ISO 10993 biocompatibility standard to make the main body ensures that no adverse reactions such as allergies or toxicity will occur upon contact with the human body. Using polypropylene or polycarbonate engineering plastic conforming to the ISO 13485 medical device quality management system requirements to make the supporting part ensures the stability and reliability of the material quality.

[0080] During the material procurement process, we rigorously review the qualifications of suppliers and their product testing reports to ensure that the materials meet the required standards. During production, we conduct random sampling tests on the materials, including tests for physical properties, chemical properties, and biocompatibility, to ensure consistent quality across each batch.

[0081] Because the materials used meet relevant standards, the main body of the nose pad, made of medical-grade silicone, can safely come into contact with the pilot's face without causing skin damage during use. The engineering plastic support component, which meets the requirements of the medical device quality management system, provides stable structural support for the main body, ensuring the performance stability of the nose pad under various usage environments and guaranteeing the product's safety and durability.

[0082] Preferably, in the disposable nose pad of the breathing mask for pilot anti-G training, the nose pad is connected to the breathing mask via a Velcro structure. A female and a female side of the Velcro are respectively provided on the nose pad and the breathing mask. The selection of the Velcro takes into account its adhesiveness, abrasion resistance, and service life. The area of ​​the female and female sides is designed according to the dimensions of the connection point between the nose pad and the breathing mask to ensure a secure connection.

[0083] After the nose pads and breathing mask are manufactured, the female and female sides of the hook and loop fasteners are fixed in their respective positions using adhesive or heat pressing. During the adhesive or heat pressing process, it is essential to ensure that the hook and loop fasteners fit tightly against the connecting parts, without any air bubbles or looseness.

[0084] During installation, align the Velcro side of the nose pad with the corresponding side of the mask, then gently press to hook the hooks together. To remove, simply peel off the Velcro. Compared to mechanical snap-fit ​​mechanisms, the Velcro system is easier to install and remove, providing users with a simple and convenient connection method to meet the usage habits and needs of different users.

[0085] The following provides an embodiment for performance analysis of the disposable nose pad of the anti-G breathing mask for pilots provided in this application.

[0086] This application adopts a double-layer sealing lip structure, with an inner layer of 0.8mm±0.1mm medical-grade silicone and an outer layer of 1.8mm±0.1mm elastic silicone, reducing the leakage rate from 2.5% in the traditional single-layer design to 0.3% (sample N=50).

[0087] By employing radial support strips and verifying through finite element analysis (FEA), the uniformity of pressure distribution was improved by 40%.

[0088] Pilot subjective rating: Traditional nose pad 6.5 points (out of 10) → This case 8.7 points (based on the results of a blind test with N=50 samples).

[0089] The flexible silicone can be made from Dow Corning grade silicone. Silicone for MDX4-4210.

[0090] Furthermore, although only one nasal pad is described in this invention, in reality, these nasal pads are produced and used in pairs, with the left and right sides being symmetrical and having the same structure.

[0091] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A disposable nose pad for use in a pilot anti-G training breathing mask, characterized in that, The nasal alar pad comprises: a main body part made of medical grade silicone material, in the shape of a crescent, with a length of 25 mm±1 mm, a width of 21 mm±1 mm, and a height of 6 mm±1 mm; and a support part made of polypropylene or polycarbonate engineering plastic, comprising a plurality of plastic support strips of equal cross-section, with a width of 1.5 mm±0.1 mm and a thickness of 0.8 mm±0.1 mm, uniformly distributed in a radial pattern inside the main body part, with an included angle of 30°±2° between adjacent support strips; wherein the main body part is provided on the side in contact with the face with a double-layer sealing lip, comprising an inner lip and an outer lip, the inner lip being made of medical grade silicone material with a thickness of 0.8 mm±0.1 mm, and the outer lip being made of elastic silicone material with a thickness of 1.8 mm±0.1 mm.

2. The disposable nasal wing pad for a pilot anti-G training breathing mask of claim 1, wherein, The main body part is provided at the edge with a chamfer with a radius of 0.5 mm±0.1 mm.

3. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The main body part is provided with a plurality of ventilation holes, with a diameter of 0.5 mm±0.1 mm and a spacing of 2 mm±0.1 mm between adjacent ventilation holes.

4. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The main body part is provided on the side in contact with the face with micro-texture, with a depth of 0.1 mm-0.2 mm and a width of 0.2 mm-0.3 mm.

5. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The main body part surface is provided with a "single-use" mark made by silk-screen printing process, with a font height of 3 mm±0.1 mm.

6. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, It further comprises an adhesive silicone layer provided on the side of the main body part in contact with the face.

7. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The support part is provided near the connection with the respiratory mask with a cushion, made of silicone material with a hardness of Shore A 30-40 degrees and a thickness of 1 mm±0.1 mm.

8. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The nasal alar pad is connected to the respiratory mask through a mechanical clamping structure, comprising a clamping groove provided at the edge of the main body part and a clamping tenon provided on the respiratory mask, with a depth of 3.5 mm±0.1 mm and a width of 2 mm±0.1 mm for the clamping groove, and a length of 3.5 mm±0.1 mm and a width of 2 mm±0.1 mm for the clamping tenon, with an anti-slip rubber strip embedded in the clamping groove, with a width of 1 mm±0.1 mm and a thickness of 0.6 mm±0.1 mm, and a friction coefficient greater than 0.

7.

9. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The medical grade silicone material meets the ISO 10993 biocompatibility standard, and the polypropylene or polycarbonate engineering plastic meets the ISO 13485 medical device quality management system requirements.

10. The disposable nasal pad for a pilot anti-G training breathing mask of claim 1, wherein, The nasal alar pad is connected to the respiratory mask through a magic tape structure.

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