Liner of breathing mask and breathing mask

Abstract

The utility model relates to a liner of a breathing mask and the breathing mask, and relates to the technical field of ventilation treatment. The pad of the breathing mask comprises a mouth-nose pad body internally provided with a cavity, and the mouth-nose pad body comprises a nose structural body, a mouth structural body and a mouth-nose connecting part connecting the nose structural body and the mouth structural body. Due to the fact that the step structure with the plane step is formed between the mouth-nose connecting part and the top supporting part and / or between the mouth-nose connecting part and the side supporting part, when the nose structural body is subjected to the pressure of the gas in the cavity, the plane step can serve as an acting platform of the pressure. Therefore, the mouth-nose connecting part can be driven to deform, and the top supporting part, the side supporting part and the nose concave part are driven to integrally move upwards, so that the mouth-nose connecting part can better fit the nose of a user, and the comfort of the user and the wearing compliance are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ventilation therapy technical field, especially a kind of gasket of respiratory mask and respiratory mask. BACKGROUND

[0002] Common respiratory mask, such as full-face mask, will cover the nose and mouth of patient when wearing, so it can affect the vision of patient, in addition, full-face mask also has the phenomenon that it can cause pressure mark or even acne on user's skin, and it is difficult for patient with claustrophobia to accept, therefore, oral-nasal mask that only covers the lower part of user's nose and mouth area is favored by user. The existing oral-nasal gasket generally forms a seal with the nose of the user by inflating the part located on both sides of the nose of the user, but this sealing method will squeeze the sides of the alae nasi of the user, especially in high pressure conditions, which will greatly reduce the comfort. SUMMARY

[0003] The utility model provides a kind of gasket of respiratory mask and respiratory mask, for solving at least one technical problem described above.

[0004] According to the first aspect of the utility model, the utility model provides a kind of gasket of respiratory mask, including the oral-nasal gasket main body that is formed with chamber inside, the oral-nasal gasket main body includes nose structure body, mouth structure body and the oral-nasal connecting portion connecting the nose structure body and the mouth structure body,

[0005] The nose structure body includes nose recess with nose opening and side support portion and top support portion respectively extending towards the mouth structure body, the nose opening is communicated with the chamber, the side support portion is located at the outside of both sides of the nose recess, and the top support portion is located at the outside front side of the nose recess;

[0006] Oral-nasal connecting portion, the oral-nasal connecting portion is arranged around the circumference of the nose structure body, and is connected with the side support portion and the top support portion respectively;

[0007] Wherein, the oral-nasal connecting portion and the top support portion between and / or the oral-nasal connecting portion and the side support portion between form the step structure with preset step width.

[0008] In one embodiment, the oral-nasal connecting portion includes the first oral-nasal connecting portion connected with the top support portion, the surface of the first oral-nasal connecting portion close to the top support portion is configured as step surface, the first oral-nasal connecting portion extends from the lower side of the top support portion in the direction away from the top support portion to form the step structure with preset step width, and the first oral-nasal connecting portion and the top support portion form a right angle included angle or an obtuse angle included angle;And / or

[0009] The mouth-nose connecting portion includes a second mouth-nose connecting portion connected to the side supporting portion, a surface of the second mouth-nose connecting portion near the side supporting portion is configured as a stepped surface, the second mouth-nose connecting portion extends from a lower side of the side supporting portion in a direction away from the side supporting portion to form the stepped structure with a preset stepped width, and an included angle between the second mouth-nose connecting portion and the side supporting portion is a right angle or an obtuse angle.

[0010] In one embodiment, the obtuse angle is an angle greater than 90° and less than 130°.

[0011] In one embodiment, a thickness of a connection between the side supporting portion and the nose recess portion is a first thickness,

[0012] A thickness of a connection between the side supporting portion and the second mouth-nose connecting portion is a second thickness and / or a thickness of the second mouth-nose connecting portion is the second thickness, the second thickness being less than the first thickness.

[0013] In one embodiment, a transition connecting portion is connected between the top supporting portion and the side supporting portion, the mouth-nose connecting portion further includes a third mouth-nose connecting portion connected to the transition connecting portion, and a thickness of the third mouth-nose connecting portion is the first thickness.

[0014] In one embodiment, a width of the mouth-nose connecting portion gradually decreases in a direction from the top supporting portion to the side supporting portion in a circumferential direction of the mouth-nose pad body.

[0015] In one embodiment, an included angle between the nose recess portion and walls on opposite sides of the nose opening in a cross section of the nose recess portion is 100°-170°.

[0016] In one embodiment, a height of the nose recess portion after swelling is lower than or consistent with a height of the side supporting portion.

[0017] In one embodiment, front and back sides of the mouth structure are respectively provided with openings in communication with the chamber, the mouth-nose connecting portion includes a fourth mouth-nose connecting portion arranged in a circumferential direction of the mouth structure and connected to the mouth structure, and the mouth structure includes a mouth connecting portion connected to the fourth mouth-nose connecting portion, a thickness of the mouth connecting portion being less than a thickness of other parts of the mouth structure.

[0018] In one embodiment, the front side of the mouth structure is connected to the fourth mouth-nose connecting portion through an inclined portion, and a thickness of the inclined portion is the same as a thickness of the fourth mouth-nose connecting portion.

[0019] In one embodiment, the top support portion includes a top support connecting portion connected to the first mouth-nose connecting portion, and the thickness of the top support connecting portion is less than the thickness of other parts of the top support portion.

[0020] According to a second aspect of the present application, the present application provides a breathing mask, comprising the above-mentioned breathing mask cushion.

[0021] Compared with the prior art, the present application has the advantages that, since the step structure with the preset step width is formed between the mouth-nose connecting portion and the top support portion and / or between the mouth-nose connecting portion and the side support portion, when the nose portion structure is subjected to the pressure of the gas in the chamber, the step structure can serve as a pressure bearing platform, so as to drive the mouth-nose connecting portion to deform, and drive the top support portion, the side support portion and the nose portion concave portion to move upward as a whole, so as to better fit the nose portion of the user, and the nose portion concave portion expands so as to be sealed with the nose portion of the user. Therefore, the present application does not rely on the side support portion to press the nose portion of the patient to realize sealing, but provides the step structure with the preset step width to make the top support portion and the nose portion concave portion originally located at a lower position move upward as a whole, so as to better fit the nose portion size of the user, thereby avoiding the discomfort such as the pressing of the nose portion of the user, and improving the comfort and the compliance of wearing of the user. BRIEF DESCRIPTION OF DRAWINGS

[0022] In the following, the present application will be described in more detail on the basis of embodiments and with reference to the accompanying drawings.

[0023] Figure 1 is a schematic view of the three-dimensional structure of the prior art cushion;

[0024] Figure 2 and Figure 3 is a schematic view of the three-dimensional structure of the cushion in Embodiment 1 of the present application;

[0025] Figure 4 is a schematic view of the three-dimensional cross-section of the cushion in Embodiment 1 of the present application when viewed from the front side;

[0026] Figure 5 is Figure 4 an enlarged view at A;

[0027] Figure 6 is a top view of the cushion in Embodiment 1 of the present application;

[0028] Figure 7 is Figure 6 a cross-sectional view at A-A;

[0029] Figure 8 is Figure 6 a cross-sectional view at B-B;

[0030] Figure 9a is a top view of the cushion in Embodiment 1 of the present application, wherein different thickness regions are shown;

[0031] Figure 9b is a top view of the cushion in Embodiment 1 of the present application, wherein the positions of the parts of the nose portion structure and the mouth-nose connecting portion relative to the nostrils of the patient are shown;

[0032] Figure 10 and Figure 11 is a schematic view of the force-deformed cushion in Embodiment 1 of the present application;

[0033] Figure 12 is a perspective cross-sectional view of the cushion in Embodiment 1 of the present application, as viewed from the front side, wherein the first plane P1 and the second plane P2 are shown;

[0034] Figure 13 is a schematic view of the structure of the cushion in Embodiment 1 of the present application, as viewed in a plane parallel to the second plane P2;

[0035] Figure 14 is a perspective cross-sectional view of the cushion in Embodiment 2 of the present application, as viewed from the front side;

[0036] Figure 15 is a schematic view of the structure of the mouth portion structure having a mouth connecting portion in Embodiment 2 of the present application;

[0037] Figure 16 is a schematic view of the structure of the top support portion having a top support connecting portion in Embodiment 2 of the present application;

[0038] Figure 17 is a schematic view of the structure of the mouth portion structure having an inclined portion in Embodiment 2 of the present application;

[0039] Figure 18 is a cross-sectional view of the mouth portion structure having an inclined portion in Embodiment 2 of the present application.

[0040] Reference Signs:

[0041] 10, mouth-nose cushion; 20, nose portion; 30, mouth portion; 40, connecting portion; 60, cavity; 22, side portion; 21, nose recess portion;

[0042] 1, cushion;

[0043] 11, mouth portion structure; 12, nose portion structure; 13, mouth-nose connecting portion; 14, mouth-nose transition region; 15, cavity;

[0044] 111, mouth connecting part; 112, inclined part; 113, first opening; 114, second opening;

[0045] 121, nose opening; 122, nose recess; 123, side support part; 124, top support part; 125, transition connecting part; 126, top support connecting part; 127, rear support part;

[0046] 131, first mouth-nose connecting part, 1311, planar step; 132, second mouth-nose connecting part; 133, third mouth-nose connecting part; 134, fourth mouth-nose connecting part. DETAILED DESCRIPTION

[0047] The utility model will be further described below with reference to the drawings.

[0048] As Figure 1 shown in the prior art, the mouth-nose pad 10 generally includes a nose portion 20, a mouth portion 30, and a connecting portion 40 connecting the nose portion 20 and the mouth portion 30. The interior of the nose portion 20 and the mouth portion 30 forms a through cavity 60, and the mouth portion 30 has an opening on each of the front and rear sides, which communicates with the cavity 60. The opening on the rear side is used to align with the mouth of the user, and the opening on the front side is used to connect the gas pipeline, so that the ventilation gas can enter the cavity 60 and be provided to the user. Generally, the nose portion 20 does not cover the nose of the user, but is generally U-shaped, that is, the height of the side portion 22 of the nose portion 20 is much greater than the height of the nose recess portion 21 of the nose portion 20, so that when worn, the side portion 22 of the nose portion 20 is just on both sides of the alae nasi of the user. After the ventilation gas is provided into the cavity 60 of the mouth-nose pad 10, the gas extrudes the side portion 22 to make it swell, and the side portion 22 can form a seal with both sides of the nose to ensure the sealing of the mouth-nose pad 10. However, when the side portion 22 swells under high pressure, it is inevitable to extrude the nose of the user, thus reducing the comfort. In addition, due to individual differences among users, for some users with a small nose, the above-mentioned mouth-nose pad 10 may not fit the nose of the user, and the user cannot maintain a sealed shape with the nose during unconscious movements, thus affecting the treatment effect.

[0049] The pad 1 of the utility model can solve the above technical problems, which not only can improve the comfort of wearing, but also can improve the sealing stability.

[0050] Example 1

[0051] As Figures 2-13 shown, the utility model provides a pad 1 of respiratory mask, more specifically, a mouth-nose pad, which includes a mouth-nose pad main body with a chamber 15 formed inside. As Figure 2As shown, the oral-nasal cushion body comprises an oral structure 11, a nasal structure 12, and an oral-nasal connecting portion 13 connecting the oral structure 11 and the nasal structure 12. The oral-nasal connecting portion 13 is arranged around the circumference of the nasal structure 12 and the oral structure 11, and is connected to the nasal structure 12 and the oral structure 11 at two sides thereof, in other words, the oral-nasal connecting portion 13 is a transition connecting portion between the nasal structure 12 and the oral structure 11.

[0052] Specifically, as shown in Figure 2 and Figure 3 , the nasal structure 12 comprises a nasal recess 122 having a nasal opening 121, two side supporting portions 123 located at both sides of the nasal recess 122, and a top supporting portion 124 located at the front side of the nasal recess 122.

[0053] The nasal recess 122 is slightly recessed in the direction towards the chamber 15 for conforming and sealingly connecting to the nose of the user, and the nasal opening 121 is in communication with the chamber 15, so that the positive pressure ventilation gas in the chamber 15 can be input into the nasal cavity of the user through the nasal opening 121. The two side supporting portions 123 and the top supporting portion 124 are all located outside the nasal recess 122 and extend towards the oral structure 11 (i.e. extend downward as shown in Figure 1 ).

[0054] As shown in Figure 1 , in the prior art oral-nasal cushion 10, the highest part of the side portion 22 is higher than the lowest part of the nasal recess portion 21 by more than 15 mm, so that Figure 1 when the oral-nasal cushion 10 is worn, the side portion 22 will pinch and press the nose of the user, making the user feel uncomfortable. The cushion 1 of the present application can avoid this phenomenon. As shown in Figure 3 , the heights of the two side supporting portions 123 are substantially the same, and the nasal recess 122 presents a concave structure form in the non-use state, so that the two side supporting portions 123 are slightly higher than the nasal recess 122 (for example, the highest part of the two side supporting portions 123 can be about 8 mm higher than the lowest part of the nasal recess 122, and the two side supporting portions 123 can be in contact with the sides of the nostrils of the user, and the nasal recess 122 can be in contact with the nostrils of the user. Because this structure form can be more in line with the shape of the human nose (the tip of the human nose and the sides of the nostrils present a V-shaped distribution, and the included angle between the horizontal plane where the tip of the nose is located and the line connecting the tip of the nose and the sides of the nostrils is about 20°). The top supporting portion 124 is located at the front side of the cushion 1, and can support and connect the nasal recess 122 and the oral structure 11. In addition, it can be understood that the nasal structure 12 further comprises a rear supporting portion 127 located at the opposite side of the top supporting portion 124, which can support and abut against the lips of the user. As shown in Figure 3As shown, the rear support 127, the side support 123, the top support 124, and the side support 123 are connected in sequence in the circumferential direction of the pad 1.

[0055] like Figure 2 and Figure 3 As shown, the mouth-nose connection portion 13 is arranged circumferentially around the nose structure 12 and is connected to the side support portion 123 and the top support portion 124 respectively.

[0056] Among them, the nasal structure 12 is designed such that when it is subjected to the pressure of the gas in the chamber 15, the side support 123 and the mouth-nose connection 13 deform, the top support 124 and the nasal recess 122 move upward as a whole, and the nasal recess 122 expands.

[0057] Please combine Figure 10 When the pad 1 is worn and positive pressure ventilation gas is introduced into its chamber 15, the gas pressure in the chamber 15 will exert an upward force F1 on the mouth-nose connection 13, causing the mouth-nose connection 13 to deform. Since the top support 124 is less prone to deformation, the force F1 will cause the top support 124 and the nasal recess 122 to move upwards (e.g., Figure 10 (As shown by the dashed line), thus it can accommodate more patients with different nasal sizes. At the same time, the nasal recess 122 expands to a larger extent when subjected to pressure F1, making the sealing area between the nasal recess 122 and the nose larger. This ensures that the seal is maintained even when the user moves unconsciously, thereby improving the sealing stability of the pad 1.

[0058] A step structure with a predetermined step width is formed between the mouth-nose connection portion 13 and the top support portion 124 and / or between the mouth-nose connection portion 13 and the side support portion. In other words, the step structure has a step, which can be, for example, a planar step 1311, having a predetermined step width L (see reference). Figure 5 The preset step width L can be, for example, 1mm-5mm, preferably 3mm-4mm.

[0059] Specifically, such as Figure 4 and Figure 5As shown, the mouth-nose connecting portion 13 comprises a first mouth-nose connecting portion 131 connected with the top supporting portion 124, the first mouth-nose connecting portion 131 extends from the lower side of the top supporting portion 124 in a direction away from the top supporting portion 124, the upper surface of the first mouth-nose connecting portion 131 close to the top supporting portion 124 is a stepped surface, which can be a plane (or an approximate plane), that is, the first mouth-nose connecting portion 131 extends from the lower side of the top supporting portion 124 in a plane extending manner, thus a stepped structure with a preset stepped width is formed between the first mouth-nose connecting portion 131 and the top supporting portion 124, and the step is a plane step 1311. The upper surface of the first mouth-nose connecting portion 131 is the plane step 1311.

[0060] By constructing the stepped structure with the preset stepped width between the first mouth-nose connecting portion 131 and the top supporting portion 124, when the mouth-nose connecting portion 13 is subjected to the upward force F1 applied by the gas pressure in the cavity 15, since the plane step 1311 of the stepped structure has the preset stepped width L (as shown), the plane step 1311 can form a force application platform, so that the force F1 is more easily applied to the first mouth-nose connecting portion 131, thereby causing the first mouth-nose connecting portion 131 to deform and driving the top supporting portion 124 and the nose recessed portion 122 to move upward (as shown by the dashed line in Figure 5 Figure 10 thereby being able to adapt to more patients with different nose sizes.

[0061] And the included angle between the first mouth-nose connecting portion 131 and the top supporting portion 124 is a right angle or an obtuse angle α.

[0062] The reason why the included angle α between the first mouth-nose connecting portion 131 and the top supporting portion 124 is a right angle or an obtuse angle is that, after the gasket 1 is worn, the first mouth-nose connecting portion 131 corresponds to the position between the user's nose tip and upper lip (i.e. the philtrum), thus the first mouth-nose connecting portion 131 and the top supporting portion 124 form a right angle or an obtuse angle, that is, the upper surface of the first mouth-nose connecting portion 131 can form a plane step 1311 extending forward (generally forward) or downwardly inclined, so that the first mouth-nose connecting portion 131 and the outer side wall of the top supporting portion 124 form a boss space, avoiding the first mouth-nose connecting portion 131 pressing the user's philtrum to cause discomfort (otherwise, if the included angle between the first mouth-nose connecting portion 131 and the top supporting portion 124 is an acute angle, the first mouth-nose connecting portion 131 extends generally upward, and a groove structure will be formed between the outer side wall of the first mouth-nose connecting portion 131 and the outer side wall of the top supporting portion 124, which will cause compression to the user's philtrum and reduce comfort).

[0063] ​More specifically, the obtuse angle α between the upper surface (planar step 1311) of the first nasal connection 131 and the outer sidewall of the top support 124 is greater than 90° and less than 130°. This is because if the angle between the first nasal connection 131 and the top support 124 is greater than 130°, the width of the planar step 1311 in the aforementioned stepped structure may be too small, thus failing to meet the requirement that the force F1 drives the first nasal connection 131, the top support 124, and the nasal recess 122 to move upwards to accommodate patients with different nasal sizes. Conversely, if the angle between the first nasal connection 131 and the top support 124 is less than 90°, the upper surface of the first nasal connection 131 tilts upwards, meaning a groove structure will be formed between the first nasal connection 131 and the top support 124. This structure is also unfavorable for the force F1 to drive the first nasal connection 131, the top support 124, and the nasal recess 122 to move upwards.

[0064] Furthermore, the thickness at the connection between the side support portion 123 and the nose recess portion 122 is a first thickness, which may be, for example, 1mm-3mm.

[0065] like Figure 6 and Figure 7 As shown, the nostril-mouth connection portion 13 also includes a second nostril-mouth connection portion 132 connected to the side support portion 123. Similar to the first nostril-mouth connection portion 131 described above, the surface of the second nostril-mouth connection portion 132 near the side support portion 123 is also constructed as a stepped surface, which can be a plane (or approximately a plane). That is, the second nostril-mouth connection portion 132 extends from the lower side of the side support portion 123 in a planar manner. Therefore, a stepped structure with a predetermined stepped width is formed between the second nostril-mouth connection portion 132 and the side support portion 123, and the step is a planar step 1311. A boss space is formed between the second nostril-mouth connection portion 132 and the outer wall of the side support portion 123, and the upper surface of the second nostril-mouth connection portion 132 is the planar step 1311. Therefore, when the oral-nasal connection 13 is subjected to an upward force F1 by the gas pressure in the chamber 15, the planar step 1311 of the stepped structure has a preset step width L, so the planar step 1311 can form a force platform, making it easier for the force F1 to act on the second oral-nasal connection 132, thereby deforming the second oral-nasal connection 132 and driving the side support 123 and the nasal recess 122 to move upward, thus accommodating more patients with different nasal sizes.

[0066] It can be understood that the second mouth-nose connecting portion 132 and the side supporting portion 123 can also form a right angle or an obtuse angle, wherein the obtuse angle is an angle greater than 90° and less than 130°. The angle between the second mouth-nose connecting portion 132 and the side supporting portion 123 can be the same as or different from the angle between the first mouth-nose connecting portion 131 and the top supporting portion 124.

[0067] Therefore, when the first mouth-nose connecting portion 131 and the top supporting portion 124 and the second mouth-nose connecting portion 132 and the side supporting portion 123 both form the stepped structure with the planar step 1311, the top supporting portion 124, the side supporting portion 123 and the nose recessed portion 122 can be moved upward as a whole.

[0068] The thickness of the connection between the side supporting portion 123 and the second mouth-nose connecting portion 132 and / or the thickness of the second mouth-nose connecting portion 132 is a second thickness, which can be, for example, 0.2 mm-1 mm. The second thickness is less than the first thickness. The top supporting portion 124 is connected to the side supporting portion 123 through a transition connecting portion 125. The mouth-nose connecting portion 13 further comprises a third mouth-nose connecting portion 133 connected to the transition connecting portion 125, and the thickness of the third mouth-nose connecting portion 133 is the first thickness.

[0069] That is, the connection between the side supporting portion 123 and the nose recessed portion 122 can be provided with a larger thickness (such as the first thickness), and the transition connecting portion 125 between the top supporting portion 124 and the side supporting portion 123 is far away from the nose of the user, so the transition connecting portion 125 (such as Figure 8 ) can also be provided with a larger thickness (such as the first thickness); and the connection between the side supporting portion 123 and the second mouth-nose connecting portion 132 and the second mouth-nose connecting portion 132 need to be deformed, so they can be provided with a smaller thickness (such as the second thickness). Therefore, as shown in Figure 9a and Figure 9b , in the top view of the cushion 1, the area where the side supporting portion 123 on both sides of the cushion 1 (including the second mouth-nose connecting portion 132) is located is a second thickness area (or a thin rubber area), the area where the top supporting portion 124 on the front side of the cushion 1 (including the first mouth-nose connecting portion 131) is located is a second thickness area (or a thin rubber area), the area where the transition connecting portion 125 connecting the side supporting portion 123 and the top supporting portion 124 (including the third mouth-nose connecting portion 133) is located is a first thickness area (or a thick rubber area), so in the circumferential direction of the cushion 1 (such as Figure 9a , the second thickness area and the first thickness area are arranged alternately. This arrangement can avoid the overall upward expansion trend of the nose structure 12 when it is subjected to the pressure of the positive pressure ventilation gas in the chamber 15, in other words, it can avoid the complete transmission of the pressure of the positive pressure ventilation gas to the nose of the user and cause discomfort to the user.

[0070] The top supporting part 124 can be set to be thicker, for example, the thickness of the top supporting part 124 is 0.2mm-2mm, so that the top supporting part 124 is less likely to deform; and the nose recess part 122 needs to be inflated, so the nose recess part 122 can have a smaller thickness, for example, 0.2mm-1mm, and the thickness of the nose recess part 122 can be smaller than the thickness of the top supporting part 124. And the nose recess part 122 is directly connected with the top supporting part 124, that is, the transition thickness between the nose recess part 122 and the top supporting part 124 in the prior art is cancelled, so that the nose recess part 122 has a larger range of inflation when subjected to the pressure F1, and thus the sealing area between the nose recess part 122 and the nose is larger. Further, the nose recess part 122 and the top supporting part 124 have a smaller transition connection area, and the smaller the length of the transition connection area is, the better, and it can even be 0, preferably, the length of the transition connection area is 0mm-10mm, which is conducive to the nose recess part 122 to have a larger range of inflation when subjected to the pressure F1, so that the sealing area between the nose recess part 122 and the nose is larger, so that even if the user is in an unconscious action, the sealing of the cushion 1 can be maintained, thereby improving the sealing stability.

[0071] Therefore, when the cushion 1 is worn, the nose recess part 122 is inflated due to the pressure of the positive pressure ventilation gas inside the chamber 15, and the height of the inflated nose recess part 122 is the same as or slightly lower than the height of the side supporting part 123, so that adaptive sealing with the nostril part of the user can be achieved; at the same time, the mouth-nose connecting part 13 between the top supporting part 124 and the mouth structure 11 is also inflated, so that the sealing area between the nose recess part 122 and the nostril of the patient is larger, thereby improving the sealing stability.

[0072] As shown in Figure 11 When the cushion 1 is worn, the face of the user first contacts the mouth-nose transition area 14 between the mouth structure 11 and the nose structure 12, so the mouth-nose transition area 14 is subjected to the pressure F2, and since the area where the side supporting part 123 is located is the second thickness area, the nose recess part 122 and the side supporting part 123 can be prevented from being extruded and deformed (as shown by the dashed line in Figure 11 ), which can cause sealing failure; at the same time, the second thickness area composed of the side supporting part 123 and the mouth-nose connecting part 13 is larger (please refer to Figure 9a and Figure 9b ), which can be deformed under the pressure F1 of the positive pressure ventilation gas inside the chamber 15, so as to better fit the nostril of the user (as shown by the thin dashed line in Figure 9a ), that is, a better sealing can be formed between the second thickness area and the nostril of the user.

[0073] The thickness of the first mouth-nose connecting portion 131 is 0.2mm-0.6mm. The thinner the thickness of the first mouth-nose connecting portion 131 is, the easier it is to deform because the thinner the thickness of the first mouth-nose connecting portion 131 is, the smaller the air pressure required for expansion is. However, the thinner the thickness of the first mouth-nose connecting portion 131 is, the more difficult it is to produce. Therefore, based on the current production technology and cost considerations, the thickness of the first mouth-nose connecting portion 131 can be, for example, 0.3mm-0.5mm.

[0074] As shown in Figure 3 , the width of the mouth-nose connecting portion 13 gradually decreases in the direction from the top support portion 124 to the side support portion 123 in the circumferential direction of the mouth-nose pad body. More specifically, the first mouth-nose connecting portion 131 connected with the top support portion 124 gradually decreases in width in the direction from the top support portion 124 to the side support portion 123 in the circumferential direction of the mouth-nose pad body, i.e., it presents a gradually thinning trend. Because the user's nose is larger and more prominent at the tip of the nose, the top support portion 124 corresponding to the tip of the user's nose (the user's nose profile is generally as shown in Figure 9a ) needs to be deformed more after the pad 1 is worn, so the mouth-nose connecting portion 13 at this position is provided with a wider width, and the width of the mouth-nose connecting portion 13 gradually decreases from the middle position of the top support portion 124 to the side support portions 123 on both sides, which is also beneficial to the deformation of the side support portions 123.

[0075] Further, in the cross section of the nose recess portion 122, the included angle β between the wall portions on both sides of the nose opening 121 where the nose recess portion 122 is located is 100°-170°. Specifically, as shown in Figure 12 , taking the plane where the nose recess portion 122 is located as the first plane P1 (or can be understood as the longitudinal cross-sectional plane of the pad 1), the plane perpendicular to the first plane P1 is the second plane P2 (or can be understood as the transverse cross-sectional plane of the pad 1), and the observation is made from the perspective of the plane parallel to the second plane P2, as shown in Figure 12As shown, the nose recess 122 is arranged at an angle β with the plane on which the walls on both sides of the nose opening 121 lie. The angle β is preferably 100°-170°, more preferably 115°-125°. This is because, if the angle β is too small, the nose recess 122 is arranged too close to the walls on both sides of the nose opening 121, i.e. the nose recess 122 is too deep, and the side supports 123 on both sides of the nose recess 122 will exert pressure on the user's nose, and greater pressure is required to inflate the nose recess 122 to fit the user's nose, which will cause the user to use an improper treatment pressure for treatment. Conversely, if the angle β is too large, e.g. more than 170°, the nose recess 122 is arranged too far from the walls on both sides of the nose opening 121, i.e. the nose recess 122 is too shallow, and the middle of the nose recess 122 will contact the user's nose before the sides, so that the user's nose can hinder the inflation of the nose recess 122 and cause poor sealing. The above-mentioned possibilities can affect the user's wearing treatment, thereby reducing the user's enthusiasm for wearing, so the angle β needs to be kept within an appropriate range. Therefore, the angle β is set to 100°-170°, e.g. 115°-125°, which can better fit the human nose structure and better fit the user's nose.

[0076] Please continue to see Figure 2 The front side and the rear side of the mouth structure 11 are respectively provided with an opening, i.e. a second opening 114 and a first opening 113, which communicate with the chamber 15. The second opening 114 is used to be connected with a gas pipeline, and the gas pipeline is connected with a gas source, so that the positive pressure ventilation gas can be delivered into the chamber 15. The first opening 113 corresponds to the user's mouth, and the positive pressure ventilation gas can be delivered into the user's oral cavity and nasal cavity through the first opening 113 and the nose opening 121 respectively.

[0077] Example 2

[0078] On the basis of the above-mentioned embodiment 1, as shown in Figures 14-18 The present application also provides a modified embodiment 2. The differences between the present embodiment 2 and the above-mentioned embodiment 1 will be described below, and the same parts will not be described again.

[0079] As shown in Figure 14 The mouth-nose connecting part 13 comprises a fourth mouth-nose connecting part 134, which is arranged around the circumference of the mouth structure 11 and connected with the mouth structure 11. In an alternative embodiment, as shown in Figure 14 The width W of the nose structure 12 is smaller than Figure 2 The width of the nose structure 12 is smaller than Figure 14In the illustrated embodiment, the area of ​​the mouth-nose connection 13 (i.e., the first mouth-nose connection 131 connected to the top support 124) is larger, that is, the area of ​​the thin adhesive region is larger. Thus, when subjected to the pressure of the gas inside the chamber 15, the first mouth-nose connection 131 is more likely to deform, while the top support 124, due to its greater thickness, is less likely to deform. This allows the nasal structure 12 to deform upward as a whole, achieving a better sealing effect.

[0080] The width W of the nasal structure 12 is generally greater than the distance from the tip of the nose to the philtrum. For example, the width W of the nasal structure 12 can be 20mm-40mm.

[0081] like Figure 15 As shown, the mouth structure 11 includes a mouth connecting portion 111 connected to the fourth mouth-nose connecting portion 134. The thickness of the mouth connecting portion 111 is less than the thickness of other parts of the mouth structure 11. Preferably, the thickness of the mouth connecting portion 111 is the same as the thickness of the fourth mouth-nose connecting portion 134. For example, the thickness of both the mouth connecting portion 111 and the fourth mouth-nose connecting portion 134 can be the second thickness described above, that is, the thickness of the part of the mouth structure 11 near the fourth mouth-nose connecting portion 134 is smaller, thereby increasing the thin adhesive area of ​​the mouth-nose connecting portion 13, making it easier to deform.

[0082] like Figure 16 As shown, the top support portion 124 includes a top support connecting portion 126 connected to the first mouth-nose connecting portion 131. The thickness of the top support connecting portion 126 is less than the thickness of other parts of the top support portion 124. Preferably, the thickness of the top support connecting portion 126 is the same as the thickness of the first mouth-nose connecting portion 131. For example, the thickness of both the top support connecting portion 126 and the thickness of the first mouth-nose connecting portion 131 can be the second thickness described above, that is, the thickness of the part of the support connecting portion 126 near the first mouth-nose connecting portion 131 is smaller, thereby increasing the deformation space of the mouth-nose connecting portion 13.

[0083] like Figure 17 and Figure 18 As shown, the front side of the mouth structure 11 is connected to the fourth mouth-nose connection portion 134 via an inclined portion 112. The thickness of the inclined portion 112 is the same as the thickness of the fourth mouth-nose connection portion 134. The interior of the mouth structure 11 and the inclined portion 112 transitions from a thick glue area to a thin glue area before connecting to the mouth-nose connection portion 13 (the fourth mouth-nose connection portion 134), thereby increasing the thin glue area of ​​the mouth-nose connection portion 13 and making the nose structure 12 more prone to deformation at this location.

[0084] Example 3

[0085] On the basis of the above-mentioned embodiments 1 and 2, the utility model also provides a breathing mask, it includes the gasket of above-mentioned breathing mask. In addition, the breathing mask of the utility model can also include frame, elbow and headgear assembly etc.. Wherein, frame is rigid shell, is used to support the gasket of breathing mask, headgear assembly can fix frame and the gasket of breathing mask on the face of user, guarantee the good sealing between the gasket of breathing mask and the face of user, thereby guarantee the stability of the pressure in chamber 15. The gasket of breathing mask is connected with pressure support equipment (such as breathing machine) through elbow. When pressure support equipment ventilates, positive pressure ventilation gas is sent into the chamber 15 of the gasket of breathing mask. Elbow can be connected with frame, for example through rotary connection or snap connection. In addition, the above-mentioned frame, elbow and headgear assembly etc. can adopt various structural forms and connecting ways in prior art, the utility model does not repeat the description again.

[0086] Need to explain, the "front side" of the utility model refers to the side of gasket 1 after wearing, away from the face of user, "rear side" refers to the side of gasket 1 after wearing, close to the face of user.

[0087] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be substituted without departing from the scope of the utility model. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cushion for a respiratory mask, characterized in that, The oral-nasal cushion body includes a nasal structure, an oral structure, and an oral-nasal connecting portion connecting the nasal structure and the oral structure, The nasal structure includes a nasal recess having a nasal opening in communication with the cavity, and side support portions and a top support portion extending toward the oral structure, respectively, the side support portions being located on both sides of the nasal recess, and the top support portion being located on the front side of the nasal recess; The oral-nasal connecting portion is disposed around the circumference of the nasal structure and is connected to the side support portions and the top support portion, respectively; The oral-nasal connecting portion and the top support portion and / or the oral-nasal connecting portion and the side support portion form a stepped structure having a preset step width.

2. The respirator mask cushion of claim 1, wherein, The oral-nasal connecting portion includes a first oral-nasal connecting portion connected to the top support portion, a surface of the first oral-nasal connecting portion near the top support portion being configured as a stepped surface, the first oral-nasal connecting portion extending from the lower side of the top support portion in a direction away from the top support portion to form the stepped structure having the preset step width, and the first oral-nasal connecting portion and the top support portion forming a right angle or an obtuse angle; and / or The oral-nasal connecting portion includes a second oral-nasal connecting portion connected to the side support portion, a surface of the second oral-nasal connecting portion near the side support portion being configured as a stepped surface, the second oral-nasal connecting portion extending from the lower side of the side support portion in a direction away from the side support portion to form the stepped structure having the preset step width, and the second oral-nasal connecting portion and the side support portion forming a right angle or an obtuse angle.

3. The respirator mask cushion of claim 2, wherein, The obtuse angle is an angle greater than 90° and less than 130°.

4. A respiratory mask cushion as claimed in claim 2 or 3, characterised in that, The thickness of the connection between the side support portion and the nasal recess is a first thickness, The thickness of the connection between the side support portion and the second oral-nasal connecting portion and / or the thickness of the second oral-nasal connecting portion is a second thickness, which is less than the first thickness.

5. The respirator mask cushion of claim 4, wherein, The top support portion is connected to the side support portion by a transition connecting portion, the oral-nasal connecting portion further includes a third oral-nasal connecting portion connected to the transition connecting portion, and the thickness of the third oral-nasal connecting portion is the first thickness.

6. The respirator mask cushion of any one of claims 1-3, wherein, The width of the oral-nasal connecting portion gradually decreases in the direction from the top support portion to the side support portion in the circumference of the oral-nasal cushion body.

7. The respirator mask cushion of any one of claims 1-3, wherein, In the cross section of the nasal recess, the angle between the nasal recess and the walls on both sides of the nasal opening is 100°-170°.

8. The mask cushion of any one of claims 1-3, wherein, The height of the nasal recess after expansion is lower than or consistent with the height of the side support portion.

9. The mask cushion of any one of claims 1-3, wherein, The front side and the rear side of the mouth structure are respectively provided with openings in communication with the chamber, the mouth-nose connecting part includes a fourth mouth-nose connecting part, which is arranged around the circumference of the mouth structure and connected with the mouth structure; the mouth structure includes a mouth connecting part connected with the fourth mouth-nose connecting part, and the thickness of the mouth connecting part is smaller than the thickness of other parts of the mouth structure.

10. The respirator mask cushion of claim 9, wherein, The front side of the mouth structure is connected with the fourth mouth-nose connecting part through an inclined part, and the thickness of the inclined part is the same as the thickness of the fourth mouth-nose connecting part.

11. The mask cushion of claims 2 or 3, wherein, The top supporting part includes a top supporting connecting part connected with the first mouth-nose connecting part, and the thickness of the top supporting connecting part is smaller than the thickness of other parts of the top supporting part.

12. A respiratory mask characterized by, A cushion including the respiratory mask of any one of claims 1-11.

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