Mask cushion, nasal mask, and oronasal mask

Abstract

This utility model relates to the field of respiratory therapy equipment technology, and discloses a mask pad, a nasal mask, and an oronasal mask. The mask pad includes a connecting portion, a pressure support portion, a contact support portion, and a facial contact portion arranged sequentially along the wearing direction. The connecting portion, pressure support portion, contact support portion, and facial contact portion constitute a single-layer pad. The contact support portion and the facial contact portion form a curved structure extending inward and bending towards the connecting portion. The pad is a single-layer membrane pad, which can optimize the support structure to relieve facial pressure, avoid the edge-cutting effect, and improve airflow guidance while ensuring a tight seal, thereby improving wearing comfort. This solves the technical problem of existing mask pads having a contradiction between sealing and comfort, and poor adaptability.

Description

Technical Field

[0001] This utility model relates to the field of respiratory therapy equipment technology, and in particular, to a mask pad. Furthermore, this utility model also relates to a nasal mask or oronasal mask including the aforementioned mask pad. Background Technology

[0002] CPAP machines are widely used to improve snoring, sleep apnea, and assist in the treatment of chronic cardiopulmonary diseases, but users are increasingly demanding higher levels of comfort and treatment effectiveness. CPAP machines deliver positive pressure airflow to users through a mask, and the mask's seal directly affects the treatment outcome. Insufficient sealing can lead to air leakage, noise, airflow impacting the face (especially the bridge of the nose and eyes), and even reduce the effectiveness of the treatment.

[0003] Current ventilator mask liners are mainly divided into double-layer membrane liners and single-layer membrane liners. Double-layer membrane liners consist of independent sealing and support units, but their manufacturing process is complex, costly, and difficult to clean. Single-layer membrane liners, while simple in structure, low in cost, and easy to clean, still have the following problems:

[0004] 1. The contradiction between sealing and comfort: To enhance sealing, the headband needs to be tightened to increase facial pressure, which can easily lead to skin marks, pressure sores, or even ulceration; when the padding is not supportive enough, the volume of the cavity fluctuates greatly during breathing, affecting the user's sleep; after the edge of the padding is deformed by force, it can easily form a "sharp edge effect", which can cause pain by compressing the face.

[0005] 2. Poor nasal fit: Although the widened design of the "upper lip" of the nasal mask can improve the sealing of the columella area, due to individual differences, some users may feel discomfort due to pressure on the skin of the columella and nasal base; the shape of the upper lip can easily guide airflow directly into the nasal cavity, causing irritation. Utility Model Content

[0006] This utility model provides a face mask pad, a nose mask, and an oral-nasal mask. The pad is a single-layer membrane pad, which can optimize the support structure to relieve facial pressure, avoid the edge effect, and improve airflow guidance while ensuring airtightness, thereby improving wearing comfort. This solves the technical problem of poor adaptability and contradiction between airtightness and comfort in existing face mask pads.

[0007] According to one aspect of the present invention, a mask pad is provided, comprising a connecting portion, a pressure support portion, a contact support portion, and a face contact portion arranged sequentially along the wearing direction, wherein the connecting portion, the pressure support portion, the contact support portion, and the face contact portion constitute a single-layer pad; the contact support portion and the face contact portion form a curved structure extending inward and bending in the direction of the connecting portion.

[0008] Furthermore, the facial contact portion has a cheek area for fitting the cheek area on both sides of the nose, and the wall thickness of the facial contact portion gradually thins from the cheek area along the circumferential direction towards both ends of the cheek area.

[0009] Furthermore, the corner area of ​​the face contact part is set as a corner with a uniform wall thickness, or the corner area of ​​the face contact part is set as a gradually thinning corner.

[0010] Furthermore, the facial contact area also includes a convex area, a nasal root area, a lower lip area, and an inner thin-edge area. The first end of the cheek area along the circumferential direction is connected to the convex area and the lower lip area in sequence, and the second end of the cheek area along the circumferential direction is connected to the nasal root area. The inner thin-edge area is located at the inner edge of the facial contact area. The wall thickness of the cheek area > the wall thickness of the convex area > the wall thickness of the nasal root area ≥ the wall thickness of the lower lip area ≥ the wall thickness of the inner thin-edge area.

[0011] Furthermore, the facial contact area also includes a nasal root area, an upper lip area, and an inner thin edge area. The first end of the cheek area along the circumferential direction is connected to the upper lip area, and the second end of the cheek area along the circumferential direction is connected to the nasal root area. The inner thin edge area is located at the inner edge of the facial contact area. The wall thickness of the cheek area is greater than the wall thickness of the nasal root area, which is greater than or equal to the wall thickness of the upper lip area, which is greater than or equal to the wall thickness of the inner thin edge area.

[0012] Furthermore, the upper wall of the liner is provided with a U-shaped groove from top to bottom, and the U-shaped groove is arranged along the circumferential direction of the liner; the U-shaped groove is located on the contact support part and / or pressure support part.

[0013] Furthermore, deformation grooves are provided at both ends of the U-shaped settling tank. Optionally, the wall thickness of the deformation grooves gradually decreases. Optionally, the wall thickness of the deformation grooves decreases in the same manner as the settling tank structure.

[0014] Furthermore, the wall thickness of the U-shaped settling trough is 0.5 mm to 2 mm; and / or the wall thickness of the part where the deformation groove is located is 0.5 mm to 3 mm.

[0015] Furthermore, the bisecting plane of the U-shaped settling trough is arranged at an angle to the vertical plane, with the angle ranging from 1° to 45°.

[0016] According to another aspect of the present invention, a nose mask is also provided, including the aforementioned mask pad.

[0017] According to another aspect of the present invention, a mouth and nose mask is also provided, including the aforementioned mask pad.

[0018] This utility model has the following beneficial effects:

[0019] 1. Optimize pressure distribution and relieve facial pressure: The synergistic effect of the pressure support and contact support allows the padding to evenly distribute pressure under the pull of the headband, avoiding excessive local pressure and reducing pressure discomfort in areas prone to air leakage, such as the bridge of the nose and chin-labial folds; the inward and upward curved design of the contact support and the facial contact part allows the facial contact part to naturally conform to the facial contours, reducing hard compression and lowering the risk of skin marks or pain caused by the "edge effect".

[0020] 2. Enhanced dynamic sealing to adapt to different breathing patterns: The inward-curving design of the contact support and face contact area can adapt to slight facial displacements (such as turning over or sleeping on one's side) during breathing, maintaining a stable seal and reducing air leakage noise and airflow impact problems; the single-layer structure avoids the sealing failure caused by the delamination deformation of traditional double-layer pads, while simplifying the manufacturing process.

[0021] 3. Improved airflow guidance and reduced nasal irritation: The curved design of the facial contact part guides the airflow smoothly into the nasal cavity, avoiding the phenomenon of direct airflow into the nasal cavity caused by the upper lip shape design in traditional nasal masks, reducing dryness or stinging sensation during breathing, and adapting to the differences in columella height among different users.

[0022] 4. Balancing support and softness: The single-layer pad provides sufficient rigidity through the pressure support to prevent the cavity from collapsing or deforming excessively during breathing, ensuring a stable airflow channel; the face contact area uses flexible materials and a curved fit design to improve tactile comfort while ensuring a seal.

[0023] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a structural schematic diagram of a preferred embodiment of the mask pad (nose and mouth mask) of this utility model;

[0026] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure of the facial contact part;

[0028] Figure 4 yes Figure 1A schematic diagram of the internal cavity structure of the facial contact area;

[0029] Figure 5 This is a schematic diagram of the structure of a mask pad (nose mask) according to a preferred embodiment of the present invention;

[0030] Figure 6 yes Figure 5 A schematic diagram of the structure of the facial contact part;

[0031] Figure 7 yes Figure 5 A schematic diagram of the cross-sectional structure.

[0032] Legend:

[0033] 100. Connecting part; 200. Pressure support part; 300. Contact support part; 400. Facial contact part; 401. Cheek area; 402. Corner area; 403. Protrusion area; 404. Nasal root area; 405. Lower lip area; 406. Inner thin edge area; 407. Upper lip area; 500. U-shaped groove; 600. Deformation groove. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0035] Figure 1 This is a structural schematic diagram of a preferred embodiment of the mask pad (nose and mouth mask) of this utility model; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 yes Figure 1 A schematic diagram of the structure of the facial contact part; Figure 4 yes Figure 1 A schematic diagram of the internal cavity structure of the facial contact area; Figure 5 This is a schematic diagram of the structure of a mask pad (nose mask) according to a preferred embodiment of the present invention; Figure 6 yes Figure 5 A schematic diagram of the structure of the facial contact part; Figure 7 yes Figure 5 A schematic diagram of the cross-sectional structure.

[0036] like Figure 1 , Figure 2 and Figure 5As shown, the mask pad of this embodiment includes a connecting part 100, a pressure support part 200, a contact support part 300 and a face contact part 400 arranged sequentially along the wearing direction. The connecting part 100, the pressure support part 200, the contact support part 300 and the face contact part 400 constitute a single-layer pad. The contact support part 300 and the face contact part 400 form a curved structure that extends inward and bends in the direction of the connecting part 100. This utility model relates to a face mask pad. The face mask pad adopts a single-layer, integrated structure. Through the specific curved design of the connecting part 100, pressure support part 200, contact support part 300, and face contact part 400, it significantly improves wearing comfort while ensuring a tight seal. The synergistic effect of the pressure support part 200 and the contact support part 300 allows the pad to evenly distribute pressure under the tension of the headband, avoiding excessive local pressure and reducing pressure discomfort in areas prone to air leakage, such as the bridge of the nose and chin-labial fold. The inward-extending and upward-curving design of the contact support part 300 and the face contact part 400 allows the face contact part 400 to naturally conform to the facial contours, reducing hard compression and lowering the risk of skin marks or pain caused by the "edge effect." The inner ring extends and curves upwards, adapting to minor facial movements during breathing (such as turning over or sleeping on one's side), maintaining a stable seal and reducing air leakage, noise, and airflow impact. The single-layer structure avoids the sealing failure caused by delamination deformation in traditional double-layer pads, while also simplifying the manufacturing process. The curved design of the facial contact portion 400 guides airflow smoothly into the nasal cavity, avoiding the direct airflow into the nasal cavity caused by the upper lip shape design in traditional nasal masks, reducing dryness or stinging during breathing, and accommodating differences in columella height among different users. The single-layer pad provides sufficient rigidity through the pressure support portion 200, preventing cavity collapse or excessive deformation during breathing and ensuring a stable airflow channel. The facial contact portion 400 uses a flexible material with a curved fit design, improving tactile comfort while ensuring a seal. This utility model pad, through its single-layer integrated curved design, comprehensively solves the contradictions between sealing, support, fit, and comfort in traditional masks, making it particularly suitable for ventilator treatment scenarios requiring long-term wear. It is simple in structure, easy to clean, and low in cost.

[0037] In this embodiment, the face contact portion 400 is designed as a non-smooth surface; for example, the face contact portion 400 is designed as a concave-convex contact surface. The concave-convex contact surface effectively increases friction during the user's side-lying and turning process, thereby increasing the user's comfort during the side-lying and turning process, while maintaining a stable seal.

[0038] In this embodiment, the facial contact portion 400 has a cheek region 401 for fitting the cheek areas on both sides of the nose, and the wall thickness of the facial contact portion 400 gradually decreases from the cheek region 401 along the circumferential direction towards both ends of the cheek region 401. A cheek area 401 is provided in the facial contact portion 400, and a gradient design is adopted in which the wall thickness gradually decreases from the cheek area 401 to both ends, further optimizing the sealing, comfort, and adaptability of the mask pad. As the main force-bearing contact area, the thicker wall of the cheek area 401 provides stronger support, ensuring that it is not prone to collapse under the positive pressure airflow of the ventilator, maintaining a stable sealing effect, and reducing the risk of air leakage on both sides of the nose. The design of gradually thinning towards both ends makes it easier for the pad to fit flexibly in areas with large contour changes such as the root of the nose and the mentolabial sulcus, avoiding local air leakage or pressure discomfort caused by excessively hard materials. The thickened design of the cheek area 401 can disperse the pressure generated by the headband tension, avoiding pressure concentration in a single area and reducing the risk of pressure sores. The gradient thin-wall structure makes the edge of the pad softer, reducing the hardness on sensitive areas (such as the columella and nasal base). Friction alleviates the "edge pain" problem caused by the uniform thickness of traditional pads; users may turn over or lie on their side during sleep, and the contact pressure between the face and the pad will dynamically change; the gradient wall thickness design allows the pad to deform in a gradient when under pressure, with the cheek area 401 maintaining support and the thin wall area flexibly adapting to facial movement, reducing the probability of air leakage caused by movement; the thickened structure of the cheek area 401 can slightly buffer the impact of positive pressure airflow, while the thin wall area reduces the feeling of obstruction to the nasal cavity and around the lips, allowing users to breathe more naturally and avoiding the stuffiness or foreign body sensation caused by the overall thickness of traditional pads; the gradient wall thickness design enhances support in key areas and provides a flexible transition at the edges, ensuring a seal while significantly improving the pad's dynamic adaptation to different facial contours and optimizing the comfort of long-term wear, especially suitable for medical scenarios such as sleep apnea machines that require long-term use.

[0039] In this embodiment, the device can adapt to minor facial displacements (such as turning over or sleeping on one's side) during breathing. Specifically, it includes: (1) a mouth and nose pad with an adaptive adjustment design. When the degree of indentation of the mentolabial sulcus (the concave area formed between the skin of the lower lip and the chin) varies greatly, the pad can be adaptively adjusted to ensure the sealing of the pad and greatly improve wearing comfort and universality. (2) a mouth and nose pad with an adaptive adjustment design. When the height and geometry of the root of the nose (the highest point of the bridge of the nose, the lower part of the center of the eyes) are different, the pad can be adaptively adjusted to ensure the sealing of the pad and greatly improve wearing comfort and universality.

[0040] In this embodiment, the corner area 402 of the facial contact portion 400 is configured as a corner with uniform wall thickness, or the corner area 402 of the facial contact portion 400 is configured as a gradually thinning corner. Using a uniform or gradually thinning wall thickness design in the corner area 402 of the facial contact portion 400 provides an optimized adaptation solution for different facial features and usage needs. The uniform wall thickness design ensures that the corner area 402 (such as the root of the nose or the transition point of the mentolabial sulcus) has uniform support strength, avoiding local collapse due to uneven wall thickness and improving sealing reliability; uniform wall thickness corners are easier to mold, reducing production complexity and suitable for standardized mass production; under the high positive pressure conditions of the ventilator, uniform wall thickness corners provide stronger resistance to deformation, reducing the risk of air leakage. The corner area 402 features a gradient wall thickness design. The gradually thinning corner structure adapts to changes in facial curves (such as differences in nasal bridge height). The thicker area provides support, while the thinner area enhances flexibility, reducing air leakage caused by minor facial movements. The gradient design avoids rigid pressure on sensitive areas (such as the columella and alar cartilage) in the corner area 402, reducing the risk of skin redness and swelling after prolonged wear. The gradient wall thickness better accommodates individual differences in nasal root height, mentolabial sulcus depth, and other factors, improving universality. A uniform wall thickness corner is more suitable for scenarios requiring high-pressure sealing (such as high-pressure treatment modes) or for users with relatively flat facial contours. A gradient wall thickness corner is more suitable for scenarios prioritizing comfort (such as long-term sleep therapy) or for users with significant facial contour variations. The wall thickness design (equal or gradual) of the corner area 402 achieves a balance between sealing and comfort through local mechanical property control; the equal wall thickness design focuses on stability, while the gradual wall thickness design focuses on adaptability. Both can be flexibly selected according to specific clinical needs or user groups to further optimize the overall performance of the respiratory mask.

[0041] like Figure 3 and Figure 4As shown, in this embodiment, the facial contact portion 400 further includes a convex bulge region 403, a nasal root region 404, a lower lip region 405, and an inner thin-edge region 406. The first end of the cheek region 401 along the circumferential direction is connected to the convex bulge region 403 and the lower lip region 405 in sequence, and the second end of the cheek region 401 along the circumferential direction is connected to the nasal root region 404. The inner thin-edge region 406 is located at the inner edge of the facial contact portion 400. The wall thickness of the cheek region 401 > the wall thickness of the convex bulge region 403 > the wall thickness of the nasal root region 404 ≥ the wall thickness of the lower lip region 405 ≥ the wall thickness of the inner thin-edge region 406. Together, they form an adaptive adjustment structure with a synergistic relationship. The facial contact area 400 is provided with a cheek area 401, a protruding area 403, a nasal root area 404, a lower lip area 405, and an inner thin-edge area 406. Through a gradient decreasing wall thickness design (cheek area 401 > protruding area 403 > nasal root area 404 ≥ lower lip area 405 ≥ inner thin-edge area 406), the synergistic optimization of sealing, comfort, and fit is achieved. The cheek area 401 (thickest) serves as the main pressure-bearing area, providing high-strength support to maintain the overall structural stability of the mask, preventing the mask from collapsing due to positive breathing pressure, and ensuring unobstructed airflow. The protruding area 403 (second thickest) corresponds to prominent parts of the face such as the cheekbones. Its moderate thickness can buffer pressure while avoiding excessive compression that could impede blood circulation, thus balancing support and comfort. The 404 (thinner) nasal root area conforms to the different curves of the nasal bridge, flexibly fitting the nasal root height of different users, reducing pressure marks or pain caused by hard contact; the 405 (thinner) lower lip area adapts to the dynamic changes of the mentolabial fold (such as speaking and swallowing movements), and the thin-walled design reduces restriction on lower lip movement, improving the naturalness of long-term wear. The thin edge easily deforms slightly with airflow pressure, automatically filling in minor unevenness on the face and reducing air leakage; the ultra-thin structure reduces contact irritation to the nasal cavity and perioral area, avoiding the "face-gripping" problem of traditional pad edges. The gradient change from thick to thin avoids sudden changes in hardness, preventing seal failure or skin damage caused by local stress concentration; under changes in airflow pressure during breathing, the thicker area maintains its overall shape, while the thinner area deforms flexibly, stabilizing the cavity volume and reducing the interference of airflow fluctuations on sleep.

[0042] like Figure 6 and Figure 7As shown, in this embodiment, the facial contact portion 400 further includes a nasal root region 404, an upper lip region 407, and an inner thin-edge region 406. The first end of the cheek region 401 along the circumferential direction is connected to the upper lip region 407, and the second end of the cheek region 401 along the circumferential direction is connected to the nasal root region 404. The inner thin-edge region 406 is located at the inner edge of the facial contact portion 400. The wall thickness of the cheek region 401 > the wall thickness of the nasal root region 404 ≥ the wall thickness of the upper lip region 407 ≥ the wall thickness of the inner thin-edge region 406; these components combine to form an adaptive adjustment structure with a synergistic relationship. By optimizing the structural design of the facial contact portion 400, a significant improvement in the sealing performance, comfort, and fit of the breathing mask is achieved. The cheek area 401 features a maximum wall thickness design, providing primary support for the mask and ensuring structural stability under positive pressure from the ventilator, preventing mask collapse and deformation. The nasal root area 404 has a medium wall thickness design, ensuring a good seal in the nasal bridge area while accommodating differences in nasal bridge height among users. The gradually thinning design of the upper lip area 407 and the inner thin edge area 406 achieves a smooth transition from the support area to the sealing edge, avoiding air leakage caused by sudden pressure changes. The gradient wall thickness design allows the padding to automatically adapt to minor facial movements (such as turning over or speaking). The ultra-thin design of the inner thin edge area 406 can undergo slight deformation with airflow pressure, automatically filling uneven areas of the face to create a passive seal. The differentiated deformation characteristics of different areas ensure good sealing performance under various usage postures. The moderate thinning of the nasal root area 404 and upper lip area 407 reduces pressure on sensitive areas (columella, philtrum); the ultra-thin design of the inner thin-edge area 406 minimizes contact irritation with the nasal cavity; the scientifically proportioned wall thickness of each area achieves an optimal balance between support and softness. The special wall thickness design of the upper lip area 407 guides airflow smoothly into the nasal cavity, avoiding dryness and discomfort caused by direct airflow; the thin-walled structure of the inner thin-edge area 406 reduces airflow resistance, making breathing more natural and smooth. The differentiated wall thickness design of the more than 400 areas of the facial contact part better adapts to different facial features (such as high nose bridge, flat nose, etc.); the gradient setting of wall thickness in each area takes into account the general differences in facial anatomy, improving the product's universality. Optionally, the nose pad has an inwardly curved section designed on the upper lip area 407 of the pad, near the columella, to avoid discomfort when it comes into contact with / presses against the skin near the columella and nasal base, thus adapting to the differences in columella height among different users.

[0043] like Figure 1 and Figure 5As shown, in this embodiment, a U-shaped groove 500 is formed on the upper wall of the pad from top to bottom, and the U-shaped groove 500 is arranged along the circumferential direction of the pad; the U-shaped groove 500 is located on the contact support portion 300 and / or pressure support portion 200; thus forming an adaptive adjustment structure. The circumferential U-shaped groove 500 on the contact support portion 300 and / or pressure support portion 200 of the pad significantly improves the mechanical properties and wearing comfort of the pad through structural optimization. The U-shaped groove 500 forms a flexible hinge structure on the contact support portion 300 and / or pressure support portion 200, making the pad more easily and evenly deformed under the tension of the headband, avoiding localized hard pressure on the face (such as the bridge of the nose, cheekbones, and other prominent areas); the groove structure allows the pad to naturally bend with the facial curves, especially suitable for users with large differences in nasal root height, reducing sealing problems caused by individual differences. The U-shaped groove 500 distributes concentrated pressure into multiple flexible support segments, preventing excessive pressure in a single area (such as the nose bridge indentation problem commonly seen in traditional pads). When the user turns over or sleeps on their side, the elastic deformation of the U-shaped groove 500 compensates for minor displacement of the mask, maintaining a continuous seal and reducing the risk of air leakage. The cavity formed by the U-shaped groove 500 can temporarily store some positive pressure airflow, buffering pressure fluctuations during breathing transitions and reducing the irritation of airflow directly hitting the nasal cavity. By reducing the overall rigidity of the pad, it makes facial contact softer, especially suitable for long-term wear by users with sensitive skin. The U-shaped structure of the U-shaped groove 500 avoids stress concentration cracking caused by repeated bending of traditional pads, extending its service life. The U-shaped groove 500, through its circumferential flexible hinge design, combines rigidity and flexibility, maintaining overall support while enhancing local compliance; simultaneously improving sealing stability, pressure comfort, and airflow smoothness; and better adapting to dynamic displacement during sleep and different facial features.

[0044] like Figure 1 and Figure 5As shown, in this embodiment, both ends of the U-shaped recess 500 are provided with deformation grooves 600; the deformation grooves 600 are thinned, with a thinner thickness relative to the contact support portion 300 and pressure support portion 200 on both sides. Optionally, the wall thickness of the portion where the deformation grooves 600 are located is arranged in a gradually decreasing manner. Optionally, the portion where the deformation grooves 600 are located has a wall thickness reduction setting similar to a recessed trough structure. Providing deformation grooves 600 with gradually changing wall thickness at both ends of the U-shaped recess 500 optimizes the mechanical properties and dynamic response characteristics of the gasket. The gradually changing wall thickness design of the deformation grooves 600 avoids abrupt changes in hardness at the connection between the ends of the U-shaped recess 500 and the main body, significantly reducing the risk of stress concentration and preventing cracks or fractures after long-term use; the gradually thin-walled structure guides the gasket to bend preferentially from the deformation groove 600 area when under stress, ensuring that the gasket deforms along the designed path and avoiding sealing failure caused by irregular twisting. The deformable groove 600, acting as a "secondary buffer structure," provides additional deformation margin when the user turns over, enabling the U-shaped recess 500 to respond more sensitively to minute facial movements and maintain airtightness. The gradually thinning wall allows the deformable groove 600 to exhibit gradient deformation characteristics under different air pressures: at low pressure, the thinner area deforms first to conform to the face, while at high pressure, the thicker area gradually participates in support, achieving a dynamic seal. The continuous decrease in wall thickness from the U-shaped recess 500 to the deformable groove 600 forms a mechanical transition zone, avoiding the sudden "pressure" on facial nerve-sensitive areas (such as infraorbital nerve branches) at the groove end, as is common in traditional designs.

[0045] In this embodiment, the wall thickness of the U-shaped sink 500 is 0.5 mm to 2 mm; and / or the wall thickness of the part where the deformation groove 600 is located is 0.5 mm to 3 mm. The U-shaped sink 500 uses a wall thickness of 0.5 mm to 2 mm to form the main deformation zone, which ensures the strength of the basic structure and provides appropriate flexibility, so that the padding can undergo controllable deformation under the tension of the head strap, avoiding the discomfort caused by excessive overall rigidity or the insufficient support caused by excessive flexibility; the deformation groove 600 uses a gradually changing wall thickness of 0.5 mm to 3 mm as a secondary buffer zone, and achieves a smooth stress transition through the thickness gradient change, eliminating the stress abrupt change at the connection between the groove end and the main body, and improving the structural durability. The thinner U-shaped groove, with a wall thickness of 500mm (0.5mm-1.5mm), prioritizes response to minute facial movements, maintaining a dynamic seal. The thicker deformation groove, with a root thickness of 600mm (2mm-3mm), provides deformation limiting, preventing collapse of the airflow channel due to excessive bending. Together, they achieve a dual sealing mechanism of "sensitive compensation for small displacements and stable support for large deformations." The lower limit of 0.5mm wall thickness ensures extremely soft edges, reducing mechanical stimulation to sensitive areas (such as the nose and chin). The upper limit of 2mm-3mm wall thickness preserves the structural integrity of key components, avoiding material fatigue fracture caused by repeated deformation, balancing immediate comfort and long-term durability. The minimum wall thickness of 0.5mm meets the limits of medical silicone molding technology, ensuring mass production feasibility. The maximum wall thickness of 3mm avoids hardening shrinkage marks caused by localized material accumulation, ensuring a consistent surface feel. By employing a dual-groove structure and precise wall thickness range design, the contradictions between sealing and comfort, dynamic and steady-state conditions, and process and performance inherent in traditional gaskets have been resolved.

[0046] like Figure 1 and Figure 5As shown, in this embodiment, the bisecting plane of the U-shaped sink 500 is arranged at an angle to the vertical plane, with the angle ranging from 1° to 45°. The tilted design of the U-shaped sink 500 causes asymmetrical deformation under stress, concentrating the support of the padding on high-tolerance areas of the face (such as the cheekbones and cheeks) while reducing pressure on low-tolerance areas (such as the bridge of the nose and mentolabial folds), thus preventing pressure sores. A small tilt angle of 1°-15° is suitable for low-pressure treatment mode (4-10 cmH2O), providing uniform support; a larger angle of 15°-45° is suitable for high-pressure mode (20-40 cmH2O), dispersing concentrated pressure through the tilted sink wall. When the user sleeps on their side, the tilted U-shaped sink 500 undergoes directional deformation due to gravity, preferentially compensating for displacement gaps between the face and the padding, reducing the risk of air leakage. The U-shaped 500 groove's tilt angle works in sync with the nasal airflow direction, reducing the impact and vibration of the airflow on the inner wall of the groove during exhalation and minimizing noise. The tilted design of the U-shaped groove changes the direction of force on the groove, avoiding the risk of lateral tearing associated with traditional vertical grooves and extending the lifespan of the liner. An angle of 1°-45° makes the material deformation direction more aligned with the molecular chain orientation, reducing the accumulation of plastic deformation caused by repeated bending. Small angles (1°-15°) are suitable for flat faces, while large angles (30°-45°) are suitable for users with high nose bridges, achieving universal sealing through angle adjustment. The tilted U-shaped groove exhibits differentiated deformation characteristics when lying supine or on one's side, balancing the sealing needs under different postures.

[0047] The nose mask of this embodiment includes the aforementioned mask pad.

[0048] The mouth and nose mask of this embodiment includes the aforementioned mask pad.

[0049] In practice, a ventilator mask pad is provided to improve the wearing comfort and ease of use.

[0050] For oral-nasal or nasal masks, the padding features an adaptive adjustment design. It can adjust to accommodate varying nasal root heights and geometric shapes, ensuring a tight seal and significantly improving wearing comfort and versatility. The padding design incorporates a U-shaped groove 500, with deformation grooves 600 extending from the left and right sides to the tail (groove end). The thickness of the deformation groove 600 is less than that of the pressure support 200, and can be selected from 0.5mm to 3mm, preferably 1.5mm to 2mm. The thickness of the U-shaped groove 500 can be selected from 0.5mm to 2mm, preferably 0.8mm to 1.3mm. The bisecting plane M or N of the U-shaped groove 500 is inclined towards the patient's face from top to bottom relative to the vertical plane H. The angle α or β between the bisecting plane M or N of the U-shaped groove 500 and the vertical plane H can be selected from 1° to 45°, preferably 1° to 15°. The two parts of the U-shaped sink 500 are connected by walls of equal thickness, which are bisected by the same plane.

[0051] When using only the U-shaped recess 500, the U-shaped recess 500 itself needs to have a certain degree of support and deformability. If the U-shaped recess 500 has good support but poor deformability, the force required to deform it will be too great. If this force exceeds the pressure range that feels comfortable at the root of the nose, the wearing comfort will decrease. If the U-shaped recess 500 has poor support but good deformability, it will be difficult to achieve the required sealing pressure, resulting in failure to seal or insufficient sealing. This problem is easily amplified and air leakage increases, especially when the user turns over while sleeping on their side. Based on this, a deformation groove 600 is designed at the tail (groove end) of the U-shaped recess 500. The deformation groove 600 is beneficial to the overall deformation stability of the U-shaped recess 500 and the consistency of deformation of each part of the U-shaped groove, avoiding the situation where "the root of the U-shaped recess 500 is too thick, causing the part of the U-shaped recess 500 to deform easily towards the center line, while the part away from the center line is difficult to deform."

[0052] The beneficial effects of this utility model of ventilator mask pad:

[0053] 1. The thickness of the contact area at the corners of the mask is equal or gradually changes without steps. The contact support and contact area are designed to extend inward, providing a smooth compression without constricting the skin.

[0054] 2. The mask uses the thickness and linear design of the contact area to balance and evenly distribute the touch and pressure intensity in various positions, making the "felt pressure intensity" in each part similar, thus increasing the feeling of not feeling anything.

[0055] 3. The mask balances support (upper and lower support) and comfort, greatly improving comfort while meeting breathing support requirements.

[0056] 4. The nose mask in the face mask has an inwardly curved section designed on the upper lip surface of the pad near the columella of the nose, which avoids the discomfort of contact / pressing against the skin near the columella and nasal base.

[0057] 5. The nose mask in the face mask has an inwardly curved section on the upper lip surface of the pad near the columella of the nose, which avoids the airflow blowing directly into the sensitive nasal cavity and causing discomfort.

[0058] 6. The nose mask in the face mask features a comprehensive thickness gradient design. The inner and outer surfaces of the base, lower support, upper support, and contact area are all seamless with no steps or boundaries, maintaining a visually cohesive appearance and providing a comfortable feel.

[0059] 7. The nose mask in the face mask has a non-perfectly flat smooth surface for the contact part. The uneven contact surface effectively increases friction when the user turns over while sleeping on their side.

[0060] 8. The mouth and nose mask pads in the mask have an adaptive adjustment design. When there are large differences in the degree of indentation of the mentolabial sulcus of a person, the pads can be adjusted to ensure the sealing of the pads, greatly improving wearing comfort and universality.

[0061] 9. The mask padding features an adaptive adjustment design. It can adaptively adjust to different heights and geometric shapes of the nose root, ensuring the padding's seal and greatly improving wearing comfort and universality.

[0062] Any matters not covered in this utility model are common knowledge.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A face mask pad, characterized in that, It includes a connecting part (100), a pressure support part (200), a contact support part (300) and a face contact part (400) arranged sequentially along the wearing direction. The connecting part (100), the pressure support part (200), the contact support part (300) and the face contact part (400) constitute a single-layer pad. The contact support (300) and the face contact (400) form a curved structure that extends inward and bends toward the connecting part (100).

2. The mask pad according to claim 1, characterized in that, The face contact portion (400) has a cheek area (401) for fitting the cheek area on both sides of the nose, and the wall thickness of the face contact portion (400) gradually decreases from the cheek area (401) to both ends of the cheek area (401) along the circumferential direction.

3. The mask pad according to claim 2, characterized in that, The corner area (402) of the face contact part (400) is set to a corner with equal wall thickness, or the corner area (402) of the face contact part (400) is set to a gradually thinning corner.

4. The face mask pad according to any one of claims 1 to 3, characterized in that, The facial contact portion (400) also includes a convex bulge area (403), a nasal root area (404), a lower lip area (405), and an inner thin edge area (406). The cheek area (401) is connected to the convex bulge area (403) and the lower lip area (405) in sequence at its first end along the circumferential direction. The cheek area (401) is connected to the nasal root area (404) at its second end along the circumferential direction. The inner thin edge area (406) is located at the inner edge of the facial contact portion (400). The wall thickness of the cheek area (401) > the wall thickness of the convex area (403) > the wall thickness of the nasal root area (404) ≥ the wall thickness of the lower lip area (405) ≥ the wall thickness of the inner thin edge area (406).

5. The face mask pad according to any one of claims 1 to 3, characterized in that, The facial contact portion (400) also includes a nasal root region (404), an upper lip region (407), and an inner thin edge region (406). The cheek region (401) is connected to the upper lip region (407) at its first end in the circumferential direction, and to the nasal root region (404) at its second end in the circumferential direction. The inner thin edge region (406) is located at the inner edge of the facial contact portion (400). The wall thickness of the cheek area (401) is greater than the wall thickness of the nasal root area (404) and greater than the wall thickness of the upper lip area (407) and greater than the wall thickness of the inner thin edge area (406).

6. The face mask pad according to any one of claims 1 to 3, characterized in that, The upper wall of the liner is provided with a U-shaped groove (500) from top to bottom, and the U-shaped groove (500) is arranged along the circumferential direction of the liner; The U-shaped sink (500) is located on the contact support (300) and / or the pressure support (200).

7. The face mask pad according to claim 6, characterized in that, The two ends of the U-shaped sinkhole (500) are provided with deformation grooves (600).

8. The face mask pad according to claim 7, characterized in that, The wall thickness of the U-shaped settling tank (500) is 0.5 mm to 2 mm; and / or The wall thickness of the part where the deformation groove (600) is located is 0.5 mm to 3 mm.

9. The face mask pad according to claim 6, characterized in that, The bisecting plane of the U-shaped trough (500) is arranged at an angle to the vertical plane, with the angle being 1°-45°.

10. A nasal mask, characterized in that, Includes the mask pad according to any one of claims 1 to 3, 5 to 9.

11. A mouth and nose mask, characterized in that, Includes the mask pad according to any one of claims 1 to 4, 6 to 9.

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