Gasket of ventilation mask and ventilation mask system

Abstract

The utility model relates to a liner of a ventilation mask and a ventilation mask system, and relates to the technical field of ventilation treatment. The ventilation mask system comprises the liner, the wall thickness of the elastic supporting area on the periphery of the liner is larger than the wall thickness of the top contact area and smaller than the wall thickness of the supporting area, that is, the wall thickness of the top contact area of the liner is the smallest, and therefore the liner is an active deformation area making contact with the face of a patient. The outer surface of the top contact area is configured as a patient contact surface which surrounds the periphery of the nostrils of the patient and is used for being in contact with the skin of the patient, that is, the area which is in contact with the face of the patient is only in the top contact area and does not comprise a peripheral elastic supporting area and a supporting area which are used for supporting; therefore, the functional areas with different wall thicknesses of the pad are not interwoven, the boundary is simple and clear, the structure of the pad is simpler, the adaptability of the pad can be improved, the pad can adapt to more patients with different nose shapes, and the universality and the compliance of the pad are improved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation therapy technology, and in particular to a liner for a ventilation mask and a ventilation mask system. Background Technology

[0002] Ventilation mask systems used in ventilation therapy typically include a liner that contacts the patient's face. Because the liner needs to seal tightly against the face, it is generally designed with different wall thicknesses to achieve different functions. For example, thinner areas can be used for active deformation to conform to the patient's face, while thicker areas provide support. To improve sealing and stability, existing liners include a support area within the face-contact area, resulting in a complex interweaving of thinner and thicker sections. This increases the complexity of the liner structure and affects its fit. For instance, a patient with wide nasal wings may experience excessive pressure in the face-contact area; a patient with a wide nasal septum or a wide philtrum may experience excessive pressure in the support area. Therefore, existing liners generally have lower versatility and compliance with most nasal shapes. Utility Model Content

[0003] This utility model provides a liner for a ventilated face mask and a ventilated face mask system to solve at least one of the above-mentioned technical problems.

[0004] According to a first aspect of the present invention, the present invention provides a liner for a ventilated face mask, comprising:

[0005] A pad for contacting the patient’s face, wherein when in contact with the patient’s face the pad is positioned at or below the tip of the patient’s nose, and the pad is provided with an opening.

[0006] The pad includes a support area connected to the opening, a surrounding elastic support area connected to the support area, and a top contact area connected to the surrounding elastic support area. The outer surface of the top contact area is configured as a patient contact surface surrounding the patient's nostrils and for contacting the patient's skin. The wall thickness of the surrounding elastic support area is greater than the wall thickness of the top contact area but less than the wall thickness of the support area.

[0007] In one embodiment, the top contact area is constructed as a sheet-like structure with equal wall thickness.

[0008] In one embodiment, the surrounding elastic support area is configured to have an annular inner surface and an annular outer surface extending circumferentially along the top contact area.

[0009] In one embodiment, the surrounding elastic support area includes a first raised area, a second raised area, and a third recessed area connecting the first raised area and the second raised area. When in use, the first raised area and the second raised area respectively contact the skin of the patient's maxilla on both sides, and the third recessed area contacts the skin around the patient's philtrum. The first raised area, the third recessed area, and the second raised area are connected end to end to form the annular inner surface and the annular outer surface.

[0010] In one embodiment, the support area includes a front support area, a first side support area, a rear support area, and a second side support area arranged sequentially around the opening in a circumferential direction, and the four elastic support areas are respectively connected to the front support area, the first side support area, the rear support area, and the second side support area.

[0011] In one embodiment, the wall thickness of the top contact area is 0.2mm-0.5mm, and the wall thickness of the support area is 1.0mm-1.3mm.

[0012] In one embodiment, the material of the opening is the same as the material of the gasket, and the two are integrally molded.

[0013] The material of the opening is different from the material of the liner, and the hardness of the material of the opening is greater than that of the material of the liner.

[0014] In one embodiment, the system further includes a frame assembly comprising a frame body, bone beam arms extending from both sides of the frame body, and a connector located inside the frame body, the connector being detachably connected to the opening, and an air intake portion provided on the frame body, the air intake portion, the connector, and the gasket being in fluid communication.

[0015] In one embodiment, the connector has a shape adapted to the opening, the connector including a first annular portion facing the ventilation mask and a second annular portion connected to the liner, the first annular portion and the second annular portion being in fluid communication, and the ventilation cross-sectional area of ​​the first annular portion being larger than the ventilation cross-sectional area of ​​the second annular portion.

[0016] In one embodiment, the air intake includes an air intake opening, one end of the ventilation gas delivery pipe of the ventilation mask is fixedly connected to the air intake opening, the ventilation gas delivery pipe of the ventilation mask and the air intake opening form a channel for delivering ventilation gas to the pad; the other end of the ventilation gas delivery pipe of the ventilation mask is connected to a rotary joint.

[0017] In one embodiment, the system further includes a headband assembly comprising side headbands connected to the bony beam arm, a top headband connected to the side headbands and surrounding the top of the patient's head, and a back headband connected to the side headbands and surrounding the back of the patient's head. The frame assembly also includes a bony beam sleeve fitted onto the bony beam arm, wherein a headband mounting hole is provided at one end of the bony beam arm away from the frame body, the headband mounting hole being exposed outside the bony beam sleeve, the side headbands passing through the headband mounting hole, and the headband mounting hole being configured such that when the headband assembly is fastened, the top contact area and the surrounding elastic support area deform to move the padding toward a direction that better conforms to the patient's face.

[0018] According to a second aspect of the present invention, the present invention provides a ventilation mask system, including the padding of the ventilation mask described above, a frame assembly connected to the padding, a ventilation gas delivery pipe connected to a positive pressure ventilation device, and a headband assembly detachably connected to the frame assembly.

[0019] Compared with the prior art, the advantages of this utility model are that the wall thickness of the elastic support area around the pad is greater than the wall thickness of the top contact area but less than the wall thickness of the support area. In other words, the wall thickness of the top contact area of ​​the pad is the smallest, and therefore it is the active deformation area that contacts the patient's face. The outer surface structure of the top contact area is a patient contact surface that surrounds the patient's nostrils and is used to contact the patient's skin. That is, the area that contacts the patient's face is only in the top contact area and does not include the surrounding elastic support area and the support area used for support. Therefore, the functional areas of the pad with different wall thicknesses do not intertwine with each other, and their boundaries are simple and clear. This not only makes the structure of the pad simpler, but also improves the adaptability of the pad, allowing the pad to adapt to more patients with different nose shapes, thus improving its versatility and compliance. Attached Figure Description

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0021] Figure 1 This is an exploded view of the ventilation mask system in an embodiment of this utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the pad shown;

[0023] Figure 3 yes Figure 1 Top view of the pad shown;

[0024] Figure 4 This is a top view of the ventilation mask system in an embodiment of this utility model;

[0025] Figure 5yes Figure 4 Sectional view at CC;

[0026] Figure 6 yes Figure 5 Sectional view at DD;

[0027] Figure 7 yes Figure 1 A three-dimensional structural diagram of the connector shown.

[0028] Figure label:

[0029] 1. Padding; 2. Ventilation gas delivery pipe; 3. Frame assembly; 4. Headband assembly;

[0030] 11. Top contact area; 12. Support area; 13. Surrounding elastic support area; 14. Opening; 15. Chamber; 16. Opening of patient contact surface;

[0031] 121. Front support area; 122. First side support area; 123. Rear support area; 124. Second side support area;

[0032] 131. First raised area; 132. Second raised area; 133. Third recessed area;

[0033] 21. Rotary joint; 22. Flexible hose;

[0034] 31. Frame body; 32. Bone beam arm; 33. Connector; 34. Bone beam sleeve;

[0035] 311, Air intake section; 3111, Air intake opening;

[0036] 321. Headband mounting holes;

[0037] 331. First annular portion; 332. Second annular portion;

[0038] 41. Side headband; 42. Top headband; 43. Back headband. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings.

[0040] like Figures 1-7 As shown, this utility model provides a liner for a ventilated face mask and a ventilated face mask system.

[0041] The ventilation mask system of this utility model includes a liner 1 of the ventilation mask, a frame assembly 3 connected to the liner 1, a ventilation gas delivery pipe 2 connected to a positive pressure ventilation device, and a headband assembly 4 detachably connected to the frame assembly 3. The liner 1 can be sealed to the frame assembly 3, and the other side of the ventilation gas delivery pipe 2 is connected to either the frame assembly 3 or the liner 1.

[0042] When worn, the ventilation mask system has the pad 1 in contact with the patient's face. The frame assembly 3 provides support for the pad 1. The ventilation gas delivery tube 2 delivers ventilation gas through the frame assembly 3 to the pad 1 for the patient's breathing. The headband assembly 4 secures the pad 1 to the patient's face. When in contact with the patient's face, the pad 1 is positioned at or below the tip of the patient's nose; that is, the pad 1 does not extend beyond the tip of the patient's nose to avoid pressure on the nasal tip.

[0043] This utility model provides a pad for a ventilated face mask, such as... Figure 2 As shown, the gasket 1 has an opening 14, and a chamber 15 is provided inside the gasket 1. The opening 14 is in fluid communication with the chamber 15. The opening 14 is used to connect to the frame assembly 3, and the frame assembly 3 is in fluid communication with the ventilation gas delivery pipe 2. Therefore, the ventilation gas delivery pipe 2 can deliver ventilation gas into the chamber 15 of the gasket 1 through the frame assembly 3 and the opening 14 on the gasket 1. Figure 3 As shown, the side of the pad 1 facing the patient is also provided with a patient contact surface opening 16, which is in fluid communication with the chamber 15. Therefore, ventilation gas can be provided to the patient for breathing through the patient contact surface opening 16.

[0044] like Figure 3 , Figure 5 and Figure 6 As shown, the pad 1 includes a support area 12 connected to the opening 14, a top contact area 11 surrounding the patient's nostrils and for contact with the patient's skin, and a periphery elastic support area 13. The periphery elastic support area 13 is connected to the support area 12 and the top contact area 11, respectively. The periphery elastic support area 13 is constructed to have an annular inner surface and an annular outer surface extending circumferentially along the top contact area 11, and the annular inner surface and the annular outer surface of the periphery elastic support area 13 are both complete and continuous annular structures that are connected end to end.

[0045] Therefore, the pad 1 of this invention, as a structure that seals with the patient's face, has a support area 12, a top contact area 11, and a surrounding elastic support area 13, each with different functions. The support area 12 surrounds the opening 14 circumferentially, and the two side edges of the surrounding elastic support area 13 are respectively connected to the edges of the support area 12 and the top contact area 11. Thus, the boundaries between the support area 12, the top contact area 11, and the surrounding elastic support area 13 are simple, clear, and do not intertwine, making the pad's structure simpler. When the pad 1 is worn, the top contact area 11 deforms and sinks downwards. Because the surrounding elastic support area 13 has a complete and continuous annular inner surface and annular outer surface extending circumferentially along the top contact area 11, it can uniformly transmit elastic support force to the top contact area 11, allowing each part of the top contact area 11 to fit more closely to the patient's skin for dynamic sealing. This allows the pad 1 to adapt to the nose shapes of more patients, improving its versatility and conformability.

[0046] Furthermore, the wall thickness of the surrounding elastic support area 13 is greater than the wall thickness of the top contact area 11 but less than the wall thickness of the support area 12. The support area 12 provides the support force required when the pad 1 is worn. In the use of a ventilated mask system, it can be considered a thick adhesive area that does not actively undergo elastic deformation and does not participate in flexible seal adjustment. Therefore, the thickness of the support area 12 can be set relatively thick, for example, 1.0mm-1.3mm.

[0047] Accordingly, the outer surface of the top contact area 11 serves as the patient contact surface, used for contact with the patient's skin. The top contact area 11 can be constructed as a single, continuous sheet structure with uniform wall thickness. In the use of a ventilation mask system, the top contact area 11 is a thin adhesive area that actively undergoes elastic deformation and participates in flexible seal adjustment; therefore, its thickness can be set relatively thin. For example, the wall thickness of the top contact area 11 is 0.2 mm to 0.5 mm.

[0048] In the use of the ventilation mask system, the surrounding elastic support area 13 provides elastic support to the top contact area 11, and therefore it is also an area that actively undergoes elastic deformation and participates in flexible seal adjustment. The surrounding elastic support area 13 connects the top contact area and the support area 12 respectively, so its wall thickness can be between the wall thickness of the top contact area 11 and the wall thickness of the support area 12; and the surrounding elastic support area 13 can have a varying thickness, that is, its thickness can vary from a thickness that can transition to the thicker support area 12 to a thickness that can transition to the thinner top contact area 11, that is, the surrounding elastic support area 13 is a thickness gradient transition area.

[0049] Therefore, it can be seen that the support area 12 is a thick adhesive area, the top contact area 11 is a thin adhesive area, and the surrounding elastic support area 13 is a thickness gradient transition area. The boundaries between the three are clear, complete and continuous, and they have their own independent functions while being interconnected with each other. This makes the structure of the pad 1 simpler and can adapt to more patients with different nasal shapes, thereby improving its versatility and compliance.

[0050] like Figure 3 As shown, the surrounding elastic support area 13 includes a first protruding area 131, a second protruding area 132, and a third recessed area 133 connecting the first protruding area 131 and the second protruding area 132. During use, the first protruding area 131 and the second protruding area 132 respectively contact the skin behind the patient's maxilla on both sides of the headband 43, while the third recessed area 133 contacts the skin around the patient's philtrum. The first protruding area 131, the third recessed area 133, and the second protruding area 132 are sequentially connected end-to-end to form the aforementioned annular inner surface and annular outer surface.

[0051] During the use of the ventilation mask system, the third recessed area 133 moves as the top contact area 11 is recessed downwards. Therefore, the part of the top contact area 11 that contacts the tip of the patient's nose and the third recessed area 133 on the surrounding elastic support area 13 that contacts the skin around the patient's philtrum both move and recess downwards as the top contact area 11 is recessed downwards, so as to reduce the support force on the softer skin around the patient's philtrum.

[0052] like Figure 5 and Figure 6 As shown, the support area 12 includes a front support area 121, a first side support area 122, a rear support area 123 and a second side support area 124 arranged sequentially around the opening 14, and the surrounding elastic support areas 13 are connected to the front support area 121, the first side support area 122, the rear support area 123 and the second side support area 124 respectively.

[0053] The front support area 121, the first side support area 122, the rear support area 123, and the second side support area 124, along with the surrounding elastic support area 13, surround the circumference of the opening 14 and form a chamber 15 inside the pad 1. The chamber 15 is in fluid communication with both the opening 14 and the patient contact surface opening 16 on the top contact area 11. In the use of the ventilation mask system, the top contact area 11 surrounds the patient's nostrils and is used for contact with the patient's skin. The patient contact surface of the top contact area 11 has a patient contact surface opening 16, through which ventilation gas can be introduced into the patient's nostrils for breathing.

[0054] The ventilation gas in chamber 15 creates a positive pressure chamber. The continuous positive pressure ventilation gas agitates the top contact area 11, causing it to conform to the skin around the patient's nostrils, preventing the downward-depressed top contact area 11 from forming wrinkles.

[0055] Optionally, the material of the opening 14 is the same as that of the gasket 1 and the two are integrally molded, for example, both are made of silicone and are constructed by integral injection molding.

[0056] Optionally, the material of the opening 14 is different from that of the pad 1, and the hardness of the material of the opening 14 is greater than that of the material of the pad 1. Because the opening 14 needs to be connected to the frame assembly 3, its greater hardness is beneficial to the bonding between it and the frame assembly 3. For example, the surface properties, material composition, and hardness of the material of the opening 14 are different from those of the material of the pad 1, and the opening 14 can be constructed on the pad 1 through secondary processing.

[0057] like Figure 1 and Figure 4 As shown, the frame assembly 3 includes a frame body 31, bone beam arms 32 extending from both sides of the frame body 31, and a connector 33 located inside the frame body 31. Figure 1 As shown, the bone beam arms 32 extend from the patient's cheeks toward the temples on both sides. The connector 33 is detachably connected to the opening 14. An air inlet 311 is also provided on the frame body 31. The air inlet 311, the connector 33, and the pad 1 are in fluid communication.

[0058] like Figure 2 and Figure 7 As shown, the connector 33 has a shape adapted to the opening 14, for example, both are approximately triangular, circular, rectangular, or other irregular shapes. The connector 33 includes a first annular portion 331 facing the ventilated gas delivery pipe 2 and a second annular portion 332 connected to the gasket 1. The first annular portion 331 and the second annular portion 332 are in fluid communication, and the ventilated cross-sectional area of ​​the first annular portion 331 is larger than that of the second annular portion 332. That is, the opening size formed on the side of the connector 33 connected to the frame body 31 is larger than the opening size formed on the side of the connector 33 connected to the gasket 1, thereby ensuring that fluctuations in gas pressure in the chamber 15 of the gasket 1 are avoided.

[0059] The first annular portion 331 is located inside the frame body 31, and the two can be constructed by integral injection molding; or the first annular portion 331 can also be fixed to the inside of the frame body 31 by mechanical snap-fit ​​connection, ultrasonic welding or other methods.

[0060] like Figure 1As shown, the headband assembly 4 includes side headbands 41 connected to the bony trabecular arm 32, a top headband 42 connected to the side headbands 41 and surrounding the top of the patient's head, and a back headband 43 connected to the side headbands 41 and surrounding the back of the patient's head. Figure 1 As shown, the end of the bone beam arm 32 away from the frame body 31 is provided with a headband mounting hole 321. The side headband 41 passes through the headband mounting hole 321 and then folds back, and is fixed by a self-adhesive structure such as Velcro.

[0061] The headband mounting hole 321 is designed with an opening angle that allows the top contact area 11 and the surrounding elastic support areas 13 to deform when the headband assembly 4 is tightened, causing the padding 1 to move towards a more closely conforming position to the patient's face. Specifically, the tension exerted by the side headband 41 on the bony arms 32 and frame body 31 of the frame assembly 3 through the headband mounting hole 321, the support force transmitted by the frame body 31 to the padding 1 through the connector 33, and the elastic support force transmitted by the padding 1 to the top contact area 11 through the surrounding elastic support areas 13 together form a sealed and stable connection between the padding 1 and the patient's face. When the patient tightens the headband assembly 4, the bony arms 32 can be pulled from the patient's cheeks towards the temples, allowing the padding 1 to fit more closely to the patient's face.

[0062] like Figure 1 As shown, the frame assembly 3 also includes a bone beam sleeve 34 fitted onto the bone beam arm 32, and the headband mounting hole 321 is exposed on the outside of the bone beam sleeve 34. The bone beam sleeve 34 is a soft silicone sleeve that can protect the bone beam arm 32 and does not hinder the connection between the bone beam arm 32 and the headband assembly 4.

[0063] The connector 33, frame body 31, and bone beam arm 32 can all be made of plastic materials, such as, but not limited to, PC, PP, or ABS. Furthermore, the connector 33, frame body 31, and bone beam arm 32 can all be made of the same material, or at least two of them can be made of different materials.

[0064] like Figure 1 As shown, the ventilation gas delivery pipe 2 is connected to the frame body 31 and is in fluid communication with the air inlet 311. Specifically, the air inlet 311 includes an air inlet opening 3111, and the ventilation gas delivery pipe 2 includes a flexible hose 22. One end of the flexible hose 22 is fixedly connected to the air inlet opening 3111, and the flexible hose 22 and the air inlet opening 3111 form a channel for delivering ventilation gas to the liner 1. The other end of the flexible hose 22 is connected to a rotary joint 21, which can be connected to a ventilation gas source to deliver ventilation gas to the frame assembly 3 and the liner 1.

[0065] The flexible hose 22 can be compressed or stretched within a certain range, and the rotary joint 21 can rotate 360° relative to the flexible hose 22, thereby reducing the impact of hose drag on the pad 1, frame assembly 3 and headband assembly 4.

[0066] Although the present invention 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 the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention 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 breathable face mask, characterized in that, The pad is used to contact the patient's face, and when in contact with the patient's face, the pad is positioned at or below the tip of the patient's nose, and the pad is provided with an opening. The pad includes a support area connected to the opening, a surrounding elastic support area connected to the support area, and a top contact area connected to the surrounding elastic support area. The outer surface of the top contact area is configured as a patient contact surface surrounding the patient's nostrils and for contacting the patient's skin. The wall thickness of the surrounding elastic support area is greater than the wall thickness of the top contact area but less than the wall thickness of the support area.

2. The liner of the ventilated face mask according to claim 1, characterized in that, The top contact area is constructed as a sheet-like structure with equal wall thickness.

3. The liner of the ventilated face mask according to claim 1 or 2, characterized in that, The surrounding elastic support area is constructed to have an annular inner surface and an annular outer surface extending circumferentially along the top contact area.

4. The liner of the ventilated face mask according to claim 3, characterized in that, The surrounding elastic support area includes a first raised area, a second raised area, and a third recessed area connecting the first raised area and the second raised area. When in use, the first raised area and the second raised area respectively contact the skin of the patient's maxilla on both sides, and the third recessed area contacts the skin around the patient's philtrum. The first raised area, the third recessed area, and the second raised area are connected end to end to form the annular inner surface and the annular outer surface.

5. The liner of the ventilated face mask according to claim 3, characterized in that, The support area includes a front support area, a first side support area, a rear support area, and a second side support area arranged sequentially around the opening. The four elastic support areas are respectively connected to the front support area, the first side support area, the rear support area, and the second side support area.

6. The liner of the ventilated face mask according to claim 1 or 2, characterized in that, The wall thickness of the top contact area is 0.2mm-0.5mm, and the wall thickness of the support area is 1.0mm-1.3mm.

7. The liner of the ventilated face mask according to claim 1 or 2, characterized in that, The material of the opening is the same as the material of the liner, and the two are integrally molded. The material of the opening is different from the material of the liner, and the hardness of the material of the opening is greater than that of the material of the liner.

8. The liner of the ventilated face mask according to claim 1 or 2, characterized in that, It also includes a frame assembly, which includes a frame body, bone beam arms extending from both sides of the frame body, and a connector located inside the frame body. The connector is detachably connected to the opening. The frame body is also provided with an air intake. The air intake, the connector, and the pad are in fluid communication.

9. The liner of the ventilated face mask according to claim 8, characterized in that, The connector has a shape adapted to the opening, and the connector includes a first annular portion facing the ventilation mask and a second annular portion connected to the liner. The first annular portion and the second annular portion are in fluid communication, and the ventilation cross-sectional area of ​​the first annular portion is larger than the ventilation cross-sectional area of ​​the second annular portion.

10. The liner of the ventilated face mask according to claim 8, characterized in that, The air intake includes an air intake opening, and one end of the ventilation gas delivery pipe of the ventilation mask is fixedly connected to the air intake opening. The ventilation gas delivery pipe of the ventilation mask and the air intake opening form a channel for delivering ventilation gas to the pad. The other end of the ventilation gas delivery pipe of the ventilation mask is connected to a rotary joint.

11. The liner of the ventilated face mask according to claim 8, characterized in that, It also includes a headband assembly, which includes side headbands that are connected to the trabecular arm, a top headband that is connected to the side headbands and surrounds the top of the patient's head, and a back headband that is connected to the side headbands and surrounds the back of the patient's head. The frame assembly also includes a bone beam sleeve fitted onto the bone beam arm. The end of the bone beam arm away from the frame body is provided with a headband mounting hole. The headband mounting hole is exposed outside the bone beam sleeve. The side headband passes through the headband mounting hole. The headband mounting hole is configured such that when the headband assembly is tightened, the top contact area and the surrounding elastic support area deform to move the padding toward a direction that better conforms to the patient's face.

12. A ventilation mask system, characterized in that, The mask includes the padding of any one of claims 1-11, and further includes a frame assembly connected to the padding, a ventilation gas delivery tube connected to a positive pressure ventilation device, and a headband assembly detachably connected to the frame assembly.

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