Liner capable of forming buffer cavity and breathing mask

Abstract

The utility model relates to the technical field of ventilation treatment equipment, in particular to a liner capable of forming a buffering cavity and a breathing mask, which comprise an annular sealing layer matched with the shape of a human face, the sealing layer wraps the nose and the mouth of a user, an annular supporting layer is arranged on the sealing layer, and the buffering cavity is formed in the supporting layer. One end of the sealing layer is connected with one end of the supporting layer through a connecting layer, the sealing layer comprises a supporting edge connected with the connecting layer, the supporting edge extends in the length direction of the section of the supporting edge to form an arc-shaped surrounding edge, and a buffering cavity is formed between the supporting layer and the supporting edge. A cavity opening communicated with the buffering cavity is formed between the end face of the supporting layer and the end face of the surrounding edge. By introducing gas into the cavity opening, the volume of the buffer cavity is increased, the buffer cavity obtains larger outward expansion pressure, reaction is formed on the face, the contact area of the face of a user and the sealing layer is larger, the sealing performance can be improved, and the wearing comfort can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation treatment equipment, in particular to a liner capable of forming a buffer cavity and a breathing mask. Background Art

[0002] Currently, the sealing gaskets of respiratory masks on the market are generally designed with a single-layer or double-layer silicone structure. When the single-layer silicone sealing gasket fits the patient's face, the supporting force is often insufficient, resulting in leakage of therapeutic gas. The leakage of therapeutic gas will cause the pressure to be lower than expected, thus failing to achieve the therapeutic effect, or even leading to failure. The leaked gas will wash the user's face, especially in the eye area, causing discomfort to the patient, leading to the patient's refusal to use the product. In order to solve the leakage of the single-layer silicone sealing gasket, the thickness and hardness of the soft rubber (such as silicone) are often increased to solve the problem of insufficient support. Increasing the thickness and hardness of the soft rubber brings a new problem, that is, the comfort will be greatly reduced and the user experience is poor.

[0003] A breathing mask cushion, a breathing mask and a ventilation therapy device with publication number CN209734713U disclose a cavity for accommodating a nose or mouth and nose, and a contact portion, a connecting portion and an intermediate portion for defining the cavity, wherein the contact portion is used for sealing contact with the patient's face, the connecting portion is used for connecting to the frame of the breathing mask, the intermediate portion is connected between the contact portion and the connecting portion, and a recessed portion extending along the circumference of the cushion and recessed toward the cavity is provided on at least the portion of the intermediate portion corresponding to the patient's nose bridge, and the bisector L of the recessed portion is inclined relative to the vertical plane S in a direction from top to bottom toward a side away from the patient's face; it is disclosed that the cushion in the contact portion with the patient is also single-layered, and its supporting force may be insufficient, which may easily lead to air leakage problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is that if a single-layer liner is used in a breathing mask, the supporting force is insufficient, and if a double-layer liner is used, the comfort is reduced.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] First, a cushion that can form a buffer cavity is provided, including an annular sealing layer adapted to the shape of a human face, the sealing layer wrapping the user's nose and mouth, an annular supporting layer installed on the sealing layer, one end of the sealing layer is connected to one end of the supporting layer by a connecting layer, the sealing layer includes a supporting edge connected to the connecting layer, the supporting edge extends along the length direction of its cross-section with an arc-shaped surrounding edge, a buffer cavity is formed between the supporting layer and the supporting edge, and a cavity opening connected to the buffer cavity is formed between the end face of the supporting layer and the end face of the surrounding edge.

[0007] By introducing gas into the cavity, the volume of the buffer cavity is increased, enabling it to obtain a greater outward expansion pressure, which exerts a reaction force on the face. As a result, the area of the user's face in contact with the sealing layer is larger, improving the sealing performance and enhancing the wearing comfort.

[0008] Furthermore, a nasal bridge part and a chin part are provided on the sealing layer. Wing parts are provided on both sides of the nasal bridge part, and cheek parts are provided between the wing parts and the chin part. By providing a structure on the sealing layer that fits the shape of the face, the adaptability to the human face shape is better when the user uses it, and the wearing is more comfortable.

[0009] Furthermore, an outwardly expanding lip part is provided in the area of the support layer corresponding to the cheek part. The design of the lip part acts on the corner of the mouth of the human face, which is beneficial for making space for the movement and rotation of the lip plane during the use of the face mask.

[0010] Furthermore, a wing is provided between the inner circle of the support layer corresponding to the wing part and the cheek part. The wing contracts inward towards the nasal bridge part and forms a bulge towards the center of the support layer. The wing forms a complement to the concave parts of the nose wing and the face, which is beneficial for increasing the sealing performance of the most easily leaking nose triangle area.

[0011] Furthermore, the spacing distance between the sealing layer and the support layer is ≥0.5 mm, and the spacing between the sealing layer and the support layer gradually expands starting from the connecting layer, presenting a V-shaped structure. By arranging the sealing layer and the support layer in a V-shaped distribution, the convection effect of the buffer cavity can be effectively increased, and the support effect of the buffer cavity is better.

[0012] Furthermore, the thickness of the support edge is greater than the thickness of the peripheral edge. The thickness of the support edge is 0.5 - 2 mm, and the thickness of the support layer is 0.8 - 1.5 mm.

[0013] Furthermore, the thickness of the nasal bridge part and the chin part on the sealing layer is 0.5 - 0.6 mm.

[0014] The present utility model also provides a breathing face mask, including the gasket as described above. A frame is installed on the connecting layer, and a breathing support device is externally connected to the frame.

[0015] Furthermore, a bracket is installed on the frame, a headband is installed on the bracket, a bent pipe is installed on the bracket, and the bent pipe is externally connected to the breathing support device. The gasket is used to strengthen the sealing between the user and the mask, and it can also make the user more comfortable during use.

[0016] Furthermore, an assembly groove is provided at the position of the frame corresponding to the connecting layer, a rib is provided on the connecting layer to cooperate with the assembly groove, and a circular support ring is provided on the outer side of the rib. By detachably connecting the frame and the gasket, the breathing face mask can be cleaned.

[0017] The utility model has the following beneficial effects: by arranging a buffer cavity between the sealing layer and the support layer, when inflating the buffer cavity, the volume of the buffer cavity increases, so that it obtains a greater outward expansion pressure, forming a reaction force on the face. The area of the user's face in contact with the sealing layer is larger, which can improve the sealing performance and increase the wearing comfort; the setting of the wing also makes the gasket form a complement with the concave parts of the nose wing and the face, which is beneficial to increasing the sealing performance of the nose triangle part where air leakage is most likely to occur, and can adapt to different face shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0019] Figure 1 is a schematic structural diagram of this embodiment;

[0020] Figure 2 is a schematic structural diagram of the sealing layer of this embodiment;

[0021] Figure 3 is a schematic structural diagram of the support layer of this embodiment;

[0022] Figure 4 is a schematic wearing diagram of this embodiment;

[0023] Figure 5 is an exploded view of this embodiment;

[0024] Figure 6 is Figure 1 a cross-sectional view along line A-A;

[0025] Figure 7 is Figure 6 an enlarged view of part B of

[0026] Figure 8 is Figure 6 an enlarged view of part C of

[0027] Figure 9 is a schematic diagram of the thickness distribution of the sealing layer of this embodiment;

[0028] Figure 10 is a first usage state diagram of this embodiment;

[0029] Figure 11 is a second usage state diagram of this embodiment;

[0030] Figure 12 It is a schematic structural diagram of a breathing mask;

[0031] Figure 13 It is a cross-sectional view of the breathing mask;

[0032] Figure 14 It is a schematic structural diagram of the connection layer. Specific embodiments

[0033] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings through specific embodiments.

[0034] It should be noted that all directional indications in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0035] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The present utility model provides a gasket that can form a buffer cavity, such as Figure 1 , Figure 2 and Figure 3 as described, including a sealing gasket 10, which is composed of an annular sealing layer 11 adapted to the human face and an annular support layer 12. The sealing layer 11 is adapted to the user's face. Specifically, a bridge of the nose portion 102 and a chin portion 104 are provided on the sealing layer 11. Wing portions 101 are provided on both sides of the bridge of the nose portion 102, and cheek portions 103 are provided between the wing portions 101 and the chin portion 104. When the sealing gasket 10 is attached to the user's face, the user's mouth and nose are wrapped by the annular sealing layer 11 at this time.

[0038] As Figure 4 shown, when the gasket is worn, the sealing layer 11 fits closely to the human face, and the bridge of the nose part 102, the chin part 104, the nose wing part 101, and the cheek part 103 fit closely to the human face to prevent air leakage.

[0039] As Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, in order to ensure that the gasket 10 is more comfortable to wear, the cross-section of the sealing layer 11 is arc-shaped, the outer side of the arc fits to the human face, the support layer 12 is located inside the arc, one end of the sealing layer 11 is connected to one end of the support layer 12 through the connecting layer 13, the spacing distance between the sealing layer 11 and the support layer 12 should be ≥0.5mm, and the spacing between the two gradually expands from the connecting layer 13, presenting a V-shaped structure. The part of the sealing layer 11 that starts from the connecting layer 13 and contacts the user's face is the support edge 111, and the end of the sealing layer 11 from the support edge 111 is the peripheral edge 112.

[0040] For more comfortable wearing, as Figure 9 shown, in the bridge of the nose part 102 and the chin part 104 of the sealing layer 11, the sealing layer 11 should be designed to form a concave shape complementary to the protrusions of the nose and chin to fit the human face features, and the thickness in the above parts should be designed to be thinner, with a thickness of 0.5 - 0.6mm. The thickness of the support edge 111 should be designed to be between 0.5 - 2mm. The support edge 111 is thicker than the peripheral edge 112, mainly playing an auxiliary support role. The peripheral edge 112 mainly plays a role in fitting the face and achieving sealing. The G area is distributed along the two relatively vertical sides of the cheek part 103 where the support edge 111 is thicker, with a thickness of 1.0 - 2.0mm. The I area is the thinner area of the support edge 111, with a thickness of 0.5 - 0.6mm, mainly distributed in the bridge of the nose part 102 and the chin part 104. Between the G areas on both sides of the support edge 111, the I and L parts form a concave position. During the user's use of the mask, the I area adapts to the bridge of the nose position, and the G areas on both sides of the I area adapt to stabilize the positions on both sides of the nose wings. Similarly, the L area adapts to the chin protrusion position, and the G areas on both sides of the L area adapt to stabilize the positions on both sides of the chin, making it more fit the human face features, and can adapt to different face shapes including high / low nose bridges, wide / narrow face shapes, etc., and can be widely adapted.

[0041] As Figure 3As shown, the thickness of the support layer 12 is between 0.8 and 1.5 mm. At the same time, in the area of the support layer 12 corresponding to the cheek part 103, lip edge parts 1031 extend outward to both sides. The lip edge parts 1031 are designed to act on the corners of the human mouth, which is beneficial for the lip plane movement during the use of the face mask and rotates to make room. Different face shapes, including wide / narrow, thick / thin lips, etc., can be widely adapted. At the same time, in the transition area between the inner circle of the support layer 12 corresponding to the nasal wing part 101 and the cheek part 103, wing guards 1032 are provided. The shape of the wing guards 1032 shrinks into the nasal bridge part 102 and forms a bulge towards the center of the support layer 12, forming a complement to the concave part of the nasal wing and the face, which is beneficial for increasing the sealing performance of the nose triangular part where air leakage is most likely to occur. Different nasal shapes, such as wide / narrow, thick / thin, etc., can be widely adapted.

[0042] As Figure 10 and Figure 11 shown, a buffer cavity 14 is formed between the support edge 111 in the sealing layer 11 and the support layer 12. There is an orifice 15 between the end of the support layer 12 and the surrounding edge 112. When the user wears the breathing face mask, the sealing layer 11 is deformed by the force of the face, causing the surrounding edge 112 to approach the support layer 12, reducing the orifice 15. When inflating into the orifice 15, the buffer cavity 14 is filled with gas, which can make the buffer cavity 14 have a certain supporting force. In the prior art, the sealing performance between the gasket and the human face is mainly provided by the pulling force of the headband. The greater the pulling force applied by the headband (the tighter it is pulled), the better the sealing performance, but the comfort of the user is worse. On the contrary, the comfort is better and the sealing performance is worse. During the use of this device, when the sealing gasket 10 is in use, a buffer cavity 14 that is nearly closed and hollow and filled with gas will be formed, which can effectively increase the contact area between the face and the sealing gasket. Even if the pulling force applied by the headband is greater, it can effectively reduce the pressure on the face, improve comfort, and reduce the occurrence of pressure sores.

[0043] Considering that the sealing gasket 10 is in direct contact with the user's face, the material should be selected as a soft, comfortable, airtight, and biocompatible flexible material, preferably silicone rubber. At the same time, the sealing layer 11, the support layer 12, and the connecting layer 13 are integrally formed.

[0044] The present utility model also provides a breathing face mask, including Figure 12 、 Figure 13 and Figure 14 shown, including the sealing gasket 10 as described above. A frame 21 is installed on the sealing gasket 10, wherein the frame 21 is connected to the connecting layer 13. A bracket 20 is installed on the frame 21, and a headband 22 is installed on the bracket 20 for fixing the breathing face mask on the user's head. A bent pipe 30 is provided on the bracket 20, and the bent pipe 30 is externally connected to a breathing support device.

[0045] As Figure 10and Figure 11 As shown, when the user uses the breathing mask, the treatment gas enters the gasket 10 from the elbow 30. A certain air pressure will be formed inside the gasket 10, and the air pressure will increase as the pressure of the treatment gas increases. The higher the air pressure, the easier it is for the gasket 10 to leak air. At this time, the user needs to apply greater pressure to the headband 22 to achieve good sealing. The treatment gas enters the buffer chamber 14 from the cavity opening 15, forming a certain convection. The convective gas can further increase the volume of the buffer chamber 14, enabling it to obtain a greater outward expansion pressure and forming a reaction force on the face. The area of the user's face in contact with the sealing layer 11 is larger, which can improve the sealing performance and increase the wearing comfort.

[0046] The frame 21 can be detachably connected to the gasket 10. Specifically, an assembly groove 212 is provided at the position of the frame 21 corresponding to the connection layer 13. A rib 131 is provided on the connection layer 13 of the gasket 10, and a support ring 132 is provided on the outer side of the rib 131. The rib 131 is inserted into the assembly groove 212. The rib 131 mainly forms an embedded assembly relationship with the assembly groove 212 of the frame 21. The support ring 132 is located on the rib 131, forming a closed loop around the gasket 10, with a height of 0.3 - 0.8 mm. There are 2 support rings 132, mainly used to increase the connection strength of the assembly. Through the detachable connection, it is convenient to clean the breathing mask.

[0047] At the same time, the frame 21 and the gasket 10 can also be integrally formed and connected, making the frame 21 and the gasket 10 an inseparable whole, with a more solid connection.

[0048] It should be understood that the above description of the specific embodiments of the present invention is only for explaining the technical route and features of the present invention. Its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present invention should be covered by the protection scope of the present invention.

Claims

1. A cushion capable of forming a buffer cavity, characterized in that, It includes an annular sealing layer (11) adapted to the shape of the human face. The sealing layer (11) wraps around the user's nose and mouth. An annular support layer (12) is installed on the sealing layer (11). One end of the sealing layer (11) and one end of the support layer (12) are connected by a connecting layer (13). The interval between the sealing layer (11) and the support layer (12) gradually expands starting from the connecting layer (13), presenting a V-shaped structure. The sealing layer (11) includes a supporting edge (111) connected to the connecting layer (13). The supporting edge (111) extends along the length direction of its cross-section with an arc-shaped surrounding edge (112). A buffer cavity (14) is formed between the support layer (12) and the supporting edge (111). An orifice (15) communicating with the buffer cavity (14) is formed between the end face of the support layer (12) and the end face of the surrounding edge (112). The inner side of the support layer (12) extends outward at the position corresponding to the mouth.

2. The gasket capable of forming a buffer cavity according to claim 1, wherein A nasal bridge part (102) and a chin part (104) are provided on the sealing layer (11). Nasal wing parts (101) are provided on both sides of the nasal bridge part (102). Cheek parts (103) are provided between the nasal wing parts (101) and the chin part (104).

3. The gasket capable of forming a buffer cavity according to claim 2, wherein An outwardly expanding lip edge part (1031) is provided in the area of the support layer (12) corresponding to the cheek part (103).

4. The gasket capable of forming a buffer cavity according to claim 2, wherein A wing (1032) is provided between the inner circle of the support layer (12) corresponding to the nasal wing part (101) and the cheek part (103). The wing (1032) contracts inward towards the nasal bridge part (102) and forms a bulge towards the center of the support layer (12).

5. A gasket capable of forming a buffer cavity according to claim 1, characterized in that, The interval distance between the sealing layer (11) and the support layer (12) ≥ 0.5 mm.

6. A gasket capable of forming a buffer cavity according to claim 1, characterized in that, The thickness of the supporting edge (111) is greater than the thickness of the surrounding edge (112). The thickness of the supporting edge (111) is 0.5 - 2 mm, and the thickness of the support layer (12) is 0.8 - 1.5 mm.

7. The gasket capable of forming a buffer cavity according to claim 2, characterized in that, The thickness of the nasal bridge part (102) and the chin part (104) on the sealing layer (11) is 0.5 - 0.6 mm.

8. A breathing mask, characterized in that, It includes a gasket according to any one of claims 1 - 7. A frame (21) is installed on the connecting layer (13). A breathing support device is externally connected to the frame (21).

9. A breathing mask according to claim 8, characterized in that, A bracket (20) is installed on the frame (21). A headband (22) is installed on the bracket (20). A bent pipe (30) is installed on the bracket (20). A breathing support device is externally connected to the bent pipe (30).

10. A breathing mask according to claim 8, characterized in that, An assembly groove (212) is provided at the position of the frame (21) corresponding to the connecting layer (13). A rib (131) cooperating with the assembly groove (212) is provided on the connecting layer (13). An annular support ring (132) is provided on the outer side surface of the rib (131).

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