Cushion for respiratory mask, and respiratory mask

Abstract

The present disclosure relates to the technical field of respiratory masks, and in particular to a cushion for a respiratory mask, and a respiratory mask. The cushion for a respiratory mask of the present disclosure comprises a sealing portion and a main body support portion, wherein the main body support portion is provided with nasal support portions respectively located on two sides of the sealing portion; the sealing portion and the nasal support portions are respectively rotated or bent at the positions of rotatable or bendable portions to form deformation adapted to the nose shape of a patient, so that the cushion has a better fit with the lower part of the patient's nose, thereby meeting the requirements for higher sealing performance of cradle masks. Moreover, the deformation of the sealing portion and the nasal support portions can adapt to nose shapes or sizes of different patients; for example, when the patient's nose is relatively small, the sealing portion and the nasal support portions undergo less deformation; conversely, the sealing portion and the nasal support portions undergo greater deformation, thereby meeting the wearing requirements of patients having different nose shapes or sizes.

Description

The padding of the breathing mask and the breathing mask itself

[0001] Cross-references to related applications

[0002] This disclosure claims priority to Chinese patent application CN2024119983179, filed on December 31, 2024, entitled “Pad of a Respiratory Mask and Respiratory Mask”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of respiratory mask technology, and particularly to a respiratory mask liner and a respiratory mask. Background Technology

[0004] Traditional mouth-nose masks cover both the nose and mouth, creating a seal around the entire area from the bridge of the nose to the lower lip. Therefore, the seal direction can be considered unidirectional, perpendicular to the face. Cradle masks, while also covering both the nose and mouth, seal only the area from the lower part of the nose to the lower lip, excluding the bridge of the nose. Therefore, the seal can be considered bidirectional, perpendicular to the face and perpendicular to the lower part of the nose. Because cradle masks do not cover the bridge of the nose, they require a higher level of seal around the nose compared to traditional mouth-nose masks, and must also accommodate patients with different nose sizes.

[0005] WO2014117227A1 discloses a mask device for respiratory therapy that allows delivery of breathable gas to a user. The mask device uses a frame and a pad to form a seal around the mouth and nose. The frame is adapted to connect to a respiratory therapy device to allow the flow of pressurized gas from the device. The pad can be foam and can have a structure substantially below or above the nose. The mask has a common air cavity for both the nose and mouth. The pad further defines a mid-open suplipal region. The pad can be adjusted to connect directly to the frame or connected to the frame together with a pad support clamp.

[0006] WO2009108995A1 discloses a face mask system comprising: a frame and a shield removably fastened to the frame, wherein the frame includes an upper end and a lower end, the upper end being adapted to cover the nose and the lower end being adapted to cover the patient's mouth; and a full-face pad disposed on the frame and adapted to engage with the patient's face generally along the bridge of the nose region, cheek region, and lower lip region and / or chin region of the patient's face, wherein the face mask assembly does not include a forehead support, and the shield includes two reinforcing members attached to opposite sides of the shield, wherein the reinforcing members have a generally upwardly curved shape and are adapted to avoid obstructing the patient's field of vision, wherein the shield includes an upper headband connector and a lower headband connector on each side of the shield, wherein the upper headband connector is disposed on the reinforcing member.

[0007] WO2022191776A1 discloses a patient interface and a system for providing pressurized air to a patient. The patient interface includes a pneumatic chamber, a first sealing structure for forming a seal around the patient's mouth, and a second sealing structure for forming a seal around the patient's nostrils. The patient interface also includes at least one stop rib disposed within a cavity of the pneumatic chamber and spaced apart from the first sealing structure in a rest position. The first sealing structure is configured to contact the at least one stop rib in an operating position. The at least one stop rib is configured to resist compression of the first sealing structure in a forward direction. The second sealing structure is not configured to contact the at least one stop rib.

[0008] EP3801721A1 discloses a breathing mask assembly including a mask frame and a cushion module. The mask frame includes a breathing gas inlet configured to receive supplied breathable gas and deliver the breathable gas to the cushion module, which is configured to form a seal with the user's face. The mask assembly may further include a bias vent communicating with the cushion module and configured to allow air to escape from the cushion module through the bias vent. Summary of the Invention

[0009] This disclosure provides a liner for a breathing mask and a breathing mask to solve at least one of the above-mentioned technical problems.

[0010] This disclosure provides a liner for a breathing mask, comprising:

[0011] A sealing portion, the sealing portion being configured to seal the patient's face in at least two directions; and

[0012] The main support portion is connected to the sealing portion. The main support portion is provided with nasal support portions located on both sides of the sealing portion. Each nasal support portion has at least one rotatable or bendable part. When the sealing portion seals the lower part of the patient's nose along a first direction, the sealing portion and the nasal support portion can rotate or bend at the position of the rotatable or bendable part to form a deformation that adapts to the shape or size of the patient's nose. The first direction is a direction perpendicular to the lower part of the patient's nose.

[0013] By rotating or bending the sealing and nasal support parts at rotatable or bendable positions to adapt to the shape of the patient's nose, the pad fits better with the lower part of the patient's nose, thus meeting the higher sealing requirements of the cradle mask; and the deformation of the sealing and nasal support parts can adapt to different patients' nose shapes or sizes.

[0014] In one embodiment, the sealing portion includes a nasal sealing area that, when sealing the lower part of the patient's nose along the first direction, is capable of rotating or bending at the position of the rotatable or bendable portion in a direction away from the patient to change the deformation of the nasal sealing area in a second direction and / or a third direction. The nasal support portion is capable of rotating or bending at the position of the rotatable or bendable portion in a direction close to the patient to change the deformation of the nasal support portion in the first direction and / or the second direction; the second direction is a direction perpendicular to the patient's face, and the third direction is a direction along one side of the patient's nostril to the other side.

[0015] By altering the deformation of the nasal sealing area in the second and / or third directions and the deformation of the nasal support portion in the first and / or second directions, the deformation of the nasal sealing area and the nasal support portion is minimized when the pad is worn by patients with smaller noses, and conversely, the deformation of the nasal sealing area and the nasal support portion is maximized when the pad is worn by patients with larger noses, thereby meeting the wearing requirements of patients with different nose shapes or sizes.

[0016] In one embodiment, the nasal sealing area, the nasal support portion, and the main support portion form a Z-shaped structure on one of the cross sections of the liner.

[0017] This structure allows the nasal sealing area and nasal support to bend at the turning point, enabling the liner to seal the lower part of the patient's nose in a way that better conforms to the patient's nasal size. This allows the liner to meet the sealing needs of patients with smaller noses as well as those with larger noses, thus making the liner compatible with various nasal shapes.

[0018] In one embodiment, the sealing portion further includes an oral sealing area for sealing the patient's face along the second direction; the rotatable or bendable portion includes a first rotatable or bendable portion near the oral sealing area and a second rotatable or bendable portion away from the oral sealing area and located on the front side of the main support portion, and the nasal support portion is constructed between the first rotatable or bendable portion and the second rotatable or bendable portion.

[0019] By providing a first rotatable or bendable portion and a second rotatable or bendable portion, the nasal sealing area can be better separated from the main support portion, allowing the nasal sealing area to be more independent and accommodating the sealing requirements of patients with different nasal shapes or sizes. Furthermore, the independent and comfortable nasal sealing area allows for more complete contact with the lower part of the patient's nose, thus the nasal sealing area of ​​this disclosure offers greater freedom in sealing methods and better sealing effects.

[0020] In one embodiment, the main support portion is provided with a chamber, which is connected to a first opening on the nasal sealing area and a second opening on the oral sealing area, respectively, and the nasal support portion is constructed as a recessed portion on the main support portion that faces the chamber.

[0021] In one embodiment, the nasal support portion has equal wall thickness at a first position and equal wall thickness at a second position, and the wall thickness of the nasal support portion at the first position is equal to its wall thickness at the second position.

[0022] In one embodiment, the nasal support portion has equal wall thickness at a first position and equal wall thickness at a second position, and the wall thickness of the nasal support portion at the first position is less than its wall thickness at the second position.

[0023] In one embodiment, the nasal support portion has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness of the nasal support portion at the first position is the same as the variation pattern of the wall thickness at the second position.

[0024] In one embodiment, the nasal support portion has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness at the first position is different from the variation pattern of the wall thickness at the second position.

[0025] By selectively setting the wall thickness, the nasal support portion can change its deformation in the first and / or second directions, thereby meeting the wearing requirements of patients with different nose shapes or sizes.

[0026] In one embodiment, the main support portion further includes a support deformation region extending between the nasal sealing region and the nasal support portion. The support deformation region extends from both sides of the nasal sealing region toward the front of the pad and converges at a position corresponding to the tip of the patient's nose. The nasal sealing region is capable of rotating or bending inward at the first rotatable or bendable portion position, and the nasal support portion is capable of rotating or bending outward at the second rotatable or bendable portion position. The deformation of the support deformation region changes in the third direction.

[0027] The support deformation area can deform in accordance with the deformation of the nasal seal area and the corresponding nasal support part, thus providing a more comfortable contact interface for the patient.

[0028] In one embodiment, the recess extends from the top of the main support portion toward its front and lower sides along the outline of the support deformation area, and the connection between the recess and the main support portion is transitioned by a rounded corner.

[0029] The transition between the recessed portion and the main support portion is smooth, thus ensuring that the nasal support portion can provide a more comfortable contact interface for the patient.

[0030] In one embodiment, the oral sealing area includes an upper lip sealing area connected to the side of the nasal sealing area closer to the patient, side sealing areas connected to the left and right sides of the upper lip sealing area respectively, and a lower lip sealing area connected between the two side sealing areas. The upper lip sealing area is used to make sealing contact with the patient's upper lip and philtrum area, the lower lip sealing area is used to make sealing contact with the patient's lower lip and jaw area, and the two side sealing areas are used to make sealing contact with the left and right sides of the patient's lips and the left and right sides of the face respectively.

[0031] The second opening in the oral sealing area communicates with the chamber in the main support section to provide ventilation gas to the patient.

[0032] In one embodiment, the pad is made of one of the materials selected from silicone, foam, gel, fabric, and cloth, or the pad is made of a composite material combining one or more of the materials selected from silicone, foam, gel, fabric, and cloth with one or more of the materials selected from polypropylene, polycarbonate, and nylon.

[0033] This disclosure also provides a breathing mask, including the padding of the above-described breathing mask, and a frame, wherein the padding is connected to the frame, or the padding is integrally formed with the frame.

[0034] In one embodiment, the mask further includes a safety valve and / or an exhaust structure. When the breathing mask includes a safety valve, the safety valve is disposed on the pad, the frame, or the safety valve support. When the breathing mask includes an exhaust structure, the exhaust structure is disposed on the pad, the frame, or the exhaust structure support.

[0035] Compared with the prior art, the advantages of this disclosure are that by rotating or bending the sealing part and the nasal support part at the rotatable or bendable position to form a deformation that adapts to the shape of the patient's nose, the pad fits better with the lower part of the patient's nose, thereby meeting the requirement of higher sealing performance of the cradle mask; and the deformation of the sealing part and the nasal support part can adapt to different nose shapes or sizes of patients. For example, when the patient's nose is small, the deformation of the sealing part and the nasal support part is small, and vice versa, thus meeting the wearing requirements of patients with different nose shapes or sizes. Attached Figure Description

[0036] The present disclosure will be described in more detail below with reference to embodiments and the accompanying drawings.

[0037] Figure 1 is a front view of the liner in an embodiment of this disclosure;

[0038] Figure 2 is a schematic diagram of the pad being worn in an embodiment of this disclosure;

[0039] Figure 3 is a three-dimensional structural diagram of the pad as viewed from the left side in an embodiment of this disclosure;

[0040] Figure 4 is a cross-sectional view of Figure 3 at section B;

[0041] Figure 5 is an enlarged view of Figure 4 at point E;

[0042] Figure 6a is a sectional view of Figure 3 at section B;

[0043] Figure 6b is a cross-sectional view of Figure 3 at section C;

[0044] Figure 7a is a three-dimensional structural diagram of the liner as viewed from the right side in an embodiment of the present disclosure;

[0045] Figure 7b is a three-dimensional structural diagram of the liner as viewed from the left side in an embodiment of this disclosure;

[0046] Figure 8 is a simplified Z-shaped structure schematic diagram in an embodiment of this disclosure;

[0047] Figure 9 is a schematic diagram of the pad being worn on a patient with a small nose according to an embodiment of this disclosure;

[0048] Figure 10 is a schematic diagram of the pad being worn on a patient with a large nose according to an embodiment of this disclosure;

[0049] Figure 11a is a cross-sectional view of the gasket at section B in another embodiment of this disclosure;

[0050] Figure 11b is a cross-sectional view of the liner at section C in another embodiment of this disclosure;

[0051] Figure 12a is a cross-sectional view of the liner at section B in yet another embodiment of this disclosure;

[0052] Figure 12b is a cross-sectional view of the liner at section C in yet another embodiment of this disclosure;

[0053] Figure 13a is a cross-sectional view of the liner at section B in yet another embodiment of this disclosure;

[0054] Figure 13b is a cross-sectional view of the liner at section C in yet another embodiment of this disclosure.

[0055] Figure label:

[0056] 1. Sealing part; 2. Supporting part; 3. Nose support part;

[0057] 11. Nasal sealing area; 12. Oral sealing area;

[0058] 121. Upper lip sealing area; 122. Lower lip sealing area; 123. Side sealing area; 124. Second opening;

[0059] 21. Chamber; 22. Supporting deformation zone;

[0060] 31. A first rotatable or bendable portion; 32. A second rotatable or bendable portion;

[0061] 111. The first opening. Embodiments of the present invention

[0062] The present disclosure will now be further explained in conjunction with the accompanying drawings.

[0063] As shown in Figures 1-10, this disclosure provides a liner for a respiratory mask, including a sealing portion 1 and a main support portion 2. The sealing portion 1 is used for sealing contact with the patient's face, and therefore can be made of a material relatively softer than the main support portion 2, or the sealing portion 1 can be made of the same material as the main support portion 2, but the sealing portion 1 is thinner, forming a thin adhesive area. The main support portion 2 is connected to the sealing portion 1 and is used to support the sealing portion 1, and its interior forms a chamber 21 for ventilation. The main support portion 2 can be made of a material harder than the sealing portion 1 or has a certain rigidity; or the main support portion 2 can be made of the same material as the sealing portion 1, but the main support portion 2 is thicker, forming a thick adhesive area. The sealing portion 1 is combined with the main support portion 2 in the respective directions or positions where sealing is required to seal the patient's face.

[0064] As shown in Figures 1 and 2, the sealing area of ​​sealing part 1 is the region from the lower part of the patient's nose to the lower part of the lower lip, excluding the patient's nasal bridge area. Therefore, sealing part 1 can seal the patient's face in at least two directions. The first direction can be perpendicular to the lower part of the patient's nose, as shown in Figure 2 (e.g., along the philtrum to the nostrils); the second direction can be perpendicular to the patient's face (e.g., along the jawline to the cheek), with the first and second directions being approximately perpendicular to each other. Alternatively, the first direction can be along the vertical axis of a cross-section of the human body, and the second direction can be along the sagittal axis of a cross-section of the human body.

[0065] As shown in Figures 3 and 4, the sealing part 1 includes a nasal sealing area 11, and the main support part 2 is provided with nasal support parts 3 located on both sides of the nasal sealing area 11. Each nasal support part 3 has at least one rotatable or bendable portion. When the sealing part 1 seals the lower part of the patient's nose along a first direction, the sealing part 1 and the nasal support parts 3 can rotate or bend at the rotatable or bendable portions to form a deformation that adapts to the shape of the patient's nose.

[0066] Specifically, as shown in Figure 4, the sealing portion 1 further includes an oral sealing region 12 and a nasal sealing region 11 located on the upper part of the liner, used to seal against the lower part of the patient's nose in a first direction. The nasal sealing region 11 has a first opening 111, which communicates with the chamber 21 in the main support portion 2. The oral sealing region 12 is located on the rear side of the liner, used to seal against the patient's face in a second direction. It has a second opening 124, which communicates with the chamber 21 in the main support portion 2. Therefore, the positive pressure ventilation gas in the chamber 21 can be provided to the patient's nostrils and mouth through the first opening 111 and the second opening 124 respectively for the patient's breathing.

[0067] The rotatable or bendable portion includes a first rotatable or bendable portion 31 near the nasal sealing region 11 and a second rotatable or bendable portion 32 away from the nasal sealing region 11, as shown in Figures 7a and 7b. The second rotatable or bendable portion 32 is located below the first rotatable or bendable portion 31. The nasal support portion 3 is constructed between the first rotatable or bendable portion 31 and the second rotatable or bendable portion 32.

[0068] When the nasal sealing area 11 seals the lower part of the patient's nose along the first direction, the nasal sealing area 11 can be compressed at the rotatable or bendable portion to rotate or bend inward (i.e., in a direction away from the patient). More specifically, when the nasal sealing area 11 seals the lower part of the patient's nose along the first direction, the nasal sealing area 11 can rotate or bend inward at the rotatable or bendable portion to change the deformation of the nasal sealing area 11 in the second and / or third directions. As shown in Figures 7a, 7b, and 9, the third direction is the direction along one side of the patient's nostril to the other side.

[0069] The nasal support portion 3 is capable of rotating or bending outward (i.e., in a direction away from the patient) at a rotatable or bendable position. More specifically, the nasal support portion 3 is capable of rotating or bending outward at a rotatable or bendable position to change the deformation of the nasal support portion 3 in a first direction and / or a second direction.

[0070] Referring to Figure 8, in one cross-section of the liner, the nasal sealing area 11, the nasal support portion 3, and the main support portion 2 can be considered as a simplified Z-shaped structure. One inflection point O1 corresponds to the first rotatable or bendable portion 31 between the nasal support portion 3 and the nasal sealing area 11, and the other inflection point O2 corresponds to the second rotatable or bendable portion 32 between the nasal support portion 3 and the main support portion 2. The nasal support portion 3 is constructed between the first rotatable or bendable portion 31 and the second rotatable or bendable portion 32.

[0071] As shown in Figure 8, when the nasal sealing area 11 seals the lower part of the patient's nose along the first direction, the nasal sealing area 11 is subjected to a downward pressure F applied by the lower part of the patient's nose along the first direction (as shown in Figure 8, this pressure is applied approximately vertically to the nasal sealing area 11). Due to the action of the pressure F, the nasal sealing area 11 and the nasal support part 3 bend at the first rotatable or bendable part 31 (turning point O1), thereby changing the deformation of the nasal sealing area 11 in the second and third directions, as well as the deformation of the nasal support part 3 in the first and second directions.

[0072] As shown in Figure 9, when a patient with a smaller nose wears the pad, the deformation of the nasal sealing area 11 and the nasal support portion 3 is smaller. Conversely, as shown in Figure 10, when a patient with a larger nose wears the pad, the deformation of the nasal sealing area 11 and the nasal support portion 3 is larger, thus meeting the wearing requirements of patients with different nose shapes or sizes.

[0073] Further, as shown in Figure 9, the width (dimension along the third direction) of the nasal sealing area 11 is L1; as shown in Figure 10, when a patient with a larger nose wears the pad, the width (dimension along the third direction) of the nasal sealing area 11 changes to L2. When the nasal sealing area 11 seals the lower part of the patient's nose along the first direction, the nasal sealing area 11 bends inward at the turning point O1, and its deformation in the third direction increases, thereby increasing the width (dimension along the third direction) of the nasal sealing area 11 from L1 shown in Figure 9 to L2 shown in Figure 10, that is, the nasal sealing area 11 is "flattened"; at the same time, the nasal support portion 3 bends outward at the turning point O2, and its deformation in the first direction increases, thereby changing the nasal support portion 3 from the extended state shown in Figure 9 to the compressed state shown in Figure 10. Therefore, by bending the nasal sealing area 11 outward at the turning point O2, its deformation in the third direction is changed (as shown in Figure 9, its deformation in the third direction is smaller; as shown in Figure 10, its deformation in the third direction is larger), and the inward bending of the nasal sealing area 11 is supported by the outward bending of the nasal support portion 3, so that the nasal sealing area 11 can better contact nasal seals of different sizes.

[0074] Therefore, by bending the nasal sealing area 11 and the nasal support portion 3 at the turning points O1 and O2, the liner can seal the lower part of the patient's nose in a way that better fits the size of the patient's nose. This allows the liner to meet the sealing needs of patients with smaller noses as well as those with larger noses, thus enabling the liner to fit various nose shapes of different sizes.

[0075] Understandably, when the nasal sealing area 11 deforms in the third direction, it can simultaneously deform in the second direction; when the nasal support portion 3 deforms in the first direction, it can simultaneously deform in the third direction.

[0076] As shown in Figures 7a and 7b, the main support portion 2 also includes a support deformation region 22 extending between the nasal sealing region 11 and the nasal support portion 3. The support deformation regions 22 extend from both sides of the nasal sealing region 11 towards the front of the liner and converge at a position corresponding to the tip of the patient's nose. Referring to Figures 9 and 10, when the nasal sealing region 11 seals the lower part of the patient's nose along the first direction, the nasal sealing region 11 can rotate or bend inward at the position of the first rotatable or bendable portion 31, and the nasal support portion 3 can rotate or bend outward at the position of the second rotatable or bendable portion 32. Simultaneously, the support deformation region 22 is compressed due to the deformation of the nasal sealing region 11 and the corresponding nasal support portion 3, thus its deformation in the third direction can also change. As shown in Figure 9, the width of the support deformation region 22 in the third direction is greater than the width of the support deformation region 22 in the third direction shown in Figure 10.

[0077] By providing a first rotatable or bendable portion 31 and a second rotatable or bendable portion 32, the nasal sealing area 11 can be better separated from the main support portion 2, allowing the nasal sealing area 11 to be more independent and accommodating the sealing requirements of patients with different nose shapes or sizes. Furthermore, the independent and comfortable nasal sealing area 11 allows for more complete contact with the lower part of the patient's nose, thus the nasal sealing area 11 of this disclosure offers greater freedom in sealing methods and better sealing effects.

[0078] In some alternative embodiments, as shown in Figures 4, 5, 6a, and 6b, the nasal support portion 3 has a wall thickness that is equal at a first position and equal at a second position. That is, the wall thickness of the nasal support portion 3 is uniform and equal at the first position, uniform and equal at the second position, and the wall thickness of the nasal support portion 3 at the first position is also equal to its wall thickness at the second position.

[0079] It should be noted that the first position and the second position can be, for example, two different cross-sectional positions on the nasal support portion 3. For example, as shown in Figure 3, the first position is a position closer to the patient than the second position. For example, the first position can be the position at cross-section C of the nasal support portion 3, and the second position can be the position at cross-section B of the nasal support portion 3. The wall thickness of the nasal support portion 3 at cross-section C is the same as the wall thickness at cross-section B. Cross-sections C and B are parallel to each other and can be planes perpendicular to a third direction; or cross-sections C and B are parallel to each other and can be planes perpendicular to a second direction; or cross-sections C and B are parallel to each other and can be planes perpendicular to a first direction; or cross-sections C and B can be other planes.

[0080] In some alternative embodiments, as shown in Figures 11a and 11b, the nasal support portion 3 has equal wall thickness at a first position and equal wall thickness at a second position, and the wall thickness of the nasal support portion 3 at the first position is less than its wall thickness at the second position. That is, the wall thickness of the nasal support portion 3 at the first position is uniform and equal, the wall thickness at the second position is uniform and equal, and the wall thickness of the nasal support portion 3 at the first position is different from its wall thickness at the second position; for example, the wall thickness of the nasal support portion 3 at the first position is less than its wall thickness at the second position. More specifically, the thickness variation pattern of the nasal support portion 3 at the first and second positions is as follows: the wall thickness gradually decreases along the direction closer to the patient, i.e., the wall thickness of the nasal support portion at the first position is less than its wall thickness at the second position. Referring to Figure 3, the first position is a position closer to the patient than the second position; for example, the first position could be the position at section C of the nasal support portion 3, and the second position could be the position at section B of the nasal support portion 3. As shown in Figures 11b and 11a, the wall thickness of the nasal support portion 3 at the section C closer to the patient's nose (i.e., the first position) is less than the wall thickness at the section B further away from the patient's nose (i.e., the second position). That is, the closer the nasal support portion 3 is to the patient, the smaller its wall thickness is, and the relatively smaller its rigidity is; the further away from the patient the wall thickness is, the larger its wall thickness is, and the relatively larger its rigidity is.

[0081] Understandably, the relative rigidity of the aforementioned nasal support portion 3 can be achieved by changing its wall thickness, or by changing the material of the nasal support portion 3. For example, a material with lower rigidity can be used near the patient, while a material with higher rigidity can be used away from the patient.

[0082] In some optional embodiments, as shown in Figures 12a and 12b, the nasal support portion 3 has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness at the first position is the same as that at the second position. That is, the wall thickness of the nasal support portion 3 at the first position is different, for example, it can uniformly decrease or uniformly increase; and the wall thickness at the second position is also different, for example, it can also uniformly decrease or uniformly increase, i.e., the variation pattern of the wall thickness of the nasal support portion 3 at the first position is the same as that at the second position. Referring to Figure 3, the first position is a position closer to the patient than the second position; for example, the first position can be the position at cross-section C of the nasal support portion 3, and the second position can be the position at cross-section B of the nasal support portion 3. As shown in Figure 12b, the wall thickness of the nose support portion 3 decreases at section C (i.e., the first position); as shown in Figure 12a, the wall thickness of the nose support portion 3 decreases at section B (i.e., the second position), and the decreasing trend of the wall thickness of the nose support portion 3 at section C is the same as the decreasing trend of the wall thickness at section B.

[0083] In some optional embodiments, as shown in Figures 13a and 13b, the nasal support portion 3 has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness at the first position is different from that at the second position. That is, the wall thickness of the nasal support portion 3 at the first position is different; for example, it can uniformly decrease or uniformly increase, or it can locally increase or locally decrease in thickness. Similarly, the wall thickness at the second position is also different, and the variation pattern of the wall thickness at the second position can be different from that at the first position. Referring to Figure 3, the first position can be the position at section C of the nasal support portion 3, and the second position can be the position at section B of the nasal support portion 3. Furthermore, the wall thickness of the nasal support portion 3 near the patient can also be set to be less than the wall thickness of the portion away from the patient; that is, the wall thickness of each portion of the nasal support portion 3 at the first position is less than the wall thickness of each portion of the nasal support portion 3 at the second position. The smaller the wall thickness of the nasal support portion 3 is near the patient, the lower its relative rigidity; the larger the wall thickness is further away from the patient, the higher its relative rigidity. As shown in Figures 13b and 13a, the wall thickness of each part of the nasal support portion 3 at section C, which is closer to the patient's nose, is smaller than the wall thickness of each part at section B, which is further away from the patient's nose.

[0084] Understandably, the relative rigidity of the aforementioned nasal support portion 3 can be achieved by changing its wall thickness, or by changing the material of the nasal support portion 3. For example, a material with lower rigidity can be used near the patient, while a material with higher rigidity can be used away from the patient.

[0085] Please refer to Figures 4 and 5, and in conjunction with Figure 7b, the nasal support portion 3 is constructed as a recessed portion on the main support portion 2 that faces the cavity 21. As shown in Figure 7b, the recessed portion can extend from the top of the main support portion 2 towards its front and lower sides along the outline of the support deformation area 22, and the connection between the recessed portion and the main support portion 2 can be transitioned by using rounded corners.

[0086] Alternatively, the nasal support portion 3 may be constructed of a different material than the main support portion 2, thereby facilitating its deformation.

[0087] As shown in Figure 4, the oral sealing area 12 includes an upper lip sealing area 121 connected to the nasal sealing area 11 on the side closer to the patient (inner side), side sealing areas 123 connected to the left and right sides of the upper lip sealing area 121 respectively (the side sealing area 123 on the right side in Figure 4 is not shown), and a lower lip sealing area 122 connected between the two side sealing areas 123. The upper lip sealing area 121 is used to make sealing contact with the patient's upper lip and philtrum area, the lower lip sealing area 122 is used to make sealing contact with the patient's lower lip and jaw area, and the two side sealing areas 123 are used to make sealing contact with the left and right sides of the patient's lips and the left and right sides of the face respectively. The second opening 124 in the oral sealing area 12 communicates with the chamber 21 in the main support portion 2 to provide ventilation gas to the patient.

[0088] The padding can be made of, for example, one of the materials selected from silicone, foam, gel, fabric and cloth, or a composite material made of one or more of the materials selected from silicone, foam, gel, fabric and cloth combined with one or more of the materials selected from polypropylene, polycarbonate and nylon, and can be obtained by molding methods such as injection molding, cutting or 3D printing.

[0089] This disclosure also provides a breathing mask, more specifically, a cradle mask, the sealing area of ​​which is the area from the lower part of the patient's nose to the lower part of the lower lip, excluding the patient's nasal bridge area.

[0090] Specifically, the respiratory mask disclosed herein includes the aforementioned respiratory mask pad and a frame (not shown). Optionally, the pad is fixedly connected to the frame (not shown), for example, by means of adhesive bonding or ultrasonic welding. Optionally, the pad and the frame (not shown) may also be detachably connected. The pad may be detachably connected to the frame via a snap-fit ​​connection. Optionally, the pad may also be integrally formed with the frame.

[0091] Furthermore, the breathing mask disclosed herein also includes a safety valve and / or an exhaust structure. The safety valve can be mounted on a pad or frame, or a separate safety valve support can be provided, with the safety valve mounted on the safety valve support. In the event of a ventilation equipment malfunction or failure, the breathing mask can communicate with the atmosphere through the safety valve to ensure the safety and effectiveness of the breathing mask.

[0092] The exhaust structure can be mounted on the padding or frame, or it can be mounted on a separate exhaust structure support. The patient's exhaled air can be exhausted into the atmosphere through the exhaust structure.

[0093] While this disclosure has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this disclosure. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A liner for a breathing mask, characterized in that, include: A sealing portion, the sealing portion being configured to seal the patient's face in at least two directions; as well as The main support portion is connected to the sealing portion. The main support portion is provided with nasal support portions located on both sides of the sealing portion. Each nasal support portion has at least one rotatable or bendable part. When the sealing portion seals the lower part of the patient's nose along a first direction, the sealing portion and the nasal support portion can rotate or bend at the position of the rotatable or bendable part to form a deformation that adapts to the shape or size of the patient's nose. The first direction is a direction perpendicular to the lower part of the patient's nose.

2. The liner of the breathing mask according to claim 1, characterized in that, The sealing portion includes a nasal sealing area. When the nasal sealing area seals the lower part of the patient's nose along the first direction, the nasal sealing area can rotate or bend at the position of the rotatable or bendable portion in a direction away from the patient to change the deformation of the nasal sealing area in the second direction and / or the third direction. The nasal support portion can rotate or bend at the position of the rotatable or bendable portion in a direction close to the patient to change the deformation of the nasal support portion in the first direction and / or the second direction. The second direction is a direction perpendicular to the patient's face, and the third direction is a direction along one side of the patient's nostril to the other side.

3. The liner of the breathing mask according to claim 2, characterized in that, The nasal sealing area, the nasal support portion, and the main support portion form a Z-shaped structure on one of the cross sections of the liner.

4. The liner of the breathing mask according to claim 2, characterized in that, The sealing portion further includes an oral sealing area for sealing the patient's face along the second direction; the rotatable or bendable portion includes a first rotatable or bendable portion near the nasal sealing area and a second rotatable or bendable portion away from the nasal sealing area, and the nasal support portion is constructed between the first rotatable or bendable portion and the second rotatable or bendable portion.

5. The liner of the breathing mask according to claim 4, characterized in that, The main support portion is provided with a chamber, which is connected to a first opening on the nasal sealing area and a second opening on the oral sealing area. The nasal support portion is constructed as a recessed portion on the main support portion that faces the chamber.

6. The liner of the breathing mask according to claim 1, characterized in that, The nasal support portion has equal wall thickness at a first position and equal wall thickness at a second position, and the wall thickness of the nasal support portion at the first position is equal to its wall thickness at the second position.

7. The liner of the breathing mask according to claim 1, characterized in that, The nasal support portion has equal wall thickness at a first position and equal wall thickness at a second position, and the wall thickness of the nasal support portion at the first position is less than its wall thickness at the second position.

8. The liner of the breathing mask according to claim 1, characterized in that, The nasal support portion has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness at the first position is the same as the variation pattern of the wall thickness at the second position.

9. The liner of the breathing mask according to claim 1, characterized in that, The nasal support portion has a varying wall thickness at a first position and a varying wall thickness at a second position, and the variation pattern of the wall thickness at the first position is different from the variation pattern of the wall thickness at the second position.

10. The liner of the breathing mask according to claim 5, characterized in that, The main support portion also includes a support deformation region extending between the nasal sealing area and the nasal support portion. The support deformation region extends from both sides of the nasal sealing area toward the front of the pad and converges at a position corresponding to the tip of the patient's nose. The nasal sealing area can rotate or bend inward at the position of the first rotatable or bendable portion, and the nasal support portion can rotate or bend outward at the position of the second rotatable or bendable portion. The deformation of the support deformation region changes in the third direction.

11. The liner of the breathing mask according to claim 10, characterized in that, The recessed portion extends from the top of the main support portion toward its front and lower sides along the outline of the support deformation area, and the connection between the recessed portion and the main support portion is transitioned by a rounded corner.

12. The liner of the breathing mask according to claim 4, characterized in that, The oral sealing area includes an upper lip sealing area connected to the nasal sealing area on the side closer to the patient, side sealing areas connected to the left and right sides of the upper lip sealing area respectively, and a lower lip sealing area connected between the two side sealing areas. The upper lip sealing area is used to make sealing contact with the patient's upper lip and philtrum area, the lower lip sealing area is used to make sealing contact with the patient's lower lip and jaw area, and the two side sealing areas are used to make sealing contact with the left and right sides of the patient's lips and the left and right sides of the face respectively.

13. The liner of the breathing mask according to claim 1, characterized in that, The pad is made of one of the following materials: silicone, foam, gel, fabric, and cloth; or the pad is made of a composite material made of one or more of the following materials combined with one or more of the following materials: polypropylene, polycarbonate, and nylon.

14. A breathing mask, characterized in that, The breathing mask comprising any one of claims 1-13 includes a liner and a frame, wherein the liner is connected to the frame or the liner is integrally formed with the frame.

15. The breathing mask according to claim 14, characterized in that, It also includes a safety valve and / or an exhaust structure. When the breathing mask includes a safety valve, the safety valve is disposed on the pad, the frame, or the safety valve support. When the breathing mask includes an exhaust structure, the exhaust structure is disposed on the pad, the frame, or the exhaust structure support.

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