Exhaust structure of a respiratory mask and respiratory mask

Abstract

This utility model relates to an exhaust structure for a breathing mask and the breathing mask itself, belonging to the field of ventilation therapy technology. The exhaust structure of the breathing mask of this utility model includes one or both of an inlet tube assembly, a padding assembly, and a headband support assembly. The inlet tube assembly is detachably connected to the padding assembly or the headband support assembly, and the inlet tube assembly is used to deliver ventilation gas; wherein, an exhaust port for exhaust is constructed between the mating end faces of the inlet tube assembly and the padding assembly or the headband support assembly.

Description

Technical Field

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

[0002] A breathing mask is used to deliver ventilation gas supplied by a breathing device into the patient's airway at positive pressure to assist breathing; simultaneously, the patient's exhaled waste gas is discharged outside the breathing mask through the vent holes on the mask. Existing breathing masks are generally formed by individually setting vent holes in their pads or frames. These vent holes have a small diameter, making them difficult to clean internally; furthermore, these vent holes are generally injection molded, and after mass production, the steel material of the mold at the vent hole is prone to wear, producing burr defects. Therefore, the mold inserts at the vent holes need to be replaced periodically, resulting in excessive costs. Utility Model Content

[0003] This invention provides an exhaust structure for a breathing mask and a breathing mask in order to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides a breathing mask, including an air inlet assembly, and one or both of a padding assembly and a headband support assembly. The air inlet assembly is detachably connected to the padding assembly or the headband support assembly, and the air inlet assembly is used to deliver ventilation gas.

[0005] An exhaust port for exhausting air is constructed between the end faces of the air intake pipe assembly and the padding assembly or the headband support assembly that cooperate with each other.

[0006] In one embodiment, when the exhaust structure includes a liner assembly, the liner assembly includes a liner and a liner skeleton connected to the liner, and a protrusion is provided on the side of the liner skeleton away from the liner, the protrusion being detachably connected to the intake manifold assembly.

[0007] Wherein, the end face of the protrusion away from the pad frame is the first exhaust hole mating surface, the first exhaust hole mating surface is used to abut against the second exhaust hole mating surface on the air intake pipe assembly, and the exhaust hole includes a groove located on the first exhaust hole mating surface or the second exhaust hole mating surface.

[0008] In one embodiment, the protrusion is provided with an air intake pipe connection hole for connecting to the air intake pipe assembly, and the air intake pipe connection hole penetrates the protrusion along the axial direction of the protrusion;

[0009] The groove is located on the mating surface of the first exhaust port and penetrates the side wall of the intake pipe connection hole radially along the intake pipe connection hole. The groove connects the inner and outer sides of the intake pipe connection hole.

[0010] In one embodiment, the number of grooves is one or more. When there are multiple grooves, the multiple grooves are arranged circumferentially at intervals along the air intake pipe connection hole, or the multiple grooves are parallel to each other in one or more directions.

[0011] In one embodiment, the groove extends axially along the intake pipe connection hole on the first exhaust hole mating surface, and the depth of the groove extension is 0.2mm-2mm.

[0012] In one embodiment, the width of the inner side of the groove is greater than or equal to the width of the outer side of the groove, wherein the inner side of the groove is the side facing the inner wall of the air intake pipe connection hole, and the outer side of the groove is the side facing away from the outer wall of the air intake pipe connection hole.

[0013] In one embodiment, a first connecting portion is provided in the intake pipe connection hole, and the intake pipe assembly includes a second connecting portion provided on the mating surface of the second exhaust hole;

[0014] The second connecting part is used to connect with the first connecting part, and when the two are connected, the first exhaust hole mating surface and the second exhaust hole mating surface abut against each other.

[0015] This utility model also provides a breathing mask, including the above-mentioned exhaust structure, and also includes a headband assembly, the headband assembly being used to fix the exhaust structure to the patient's face.

[0016] In one embodiment, when the exhaust structure of the breathing mask includes a padding assembly and a headband support assembly, the headband support assembly includes a receiving portion and extension arms located on both sides of the receiving portion, the receiving portion being detachably connected to the padding assembly, and the extension arms being connected to the headband assembly.

[0017] In one embodiment, the receiving portion is provided with a pad connection hole, the pad assembly is provided with a first fastening portion, and the inner wall of the pad connection hole is provided with a second fastening portion. When the pad assembly is connected to the pad connection hole, the first fastening portion and the second fastening portion cooperate with each other.

[0018] In one embodiment, there are multiple first fastening parts, and a guide post is provided between two adjacent first fastening parts. The guide post is used to cooperate with the guide groove in the gasket connection hole.

[0019] In one embodiment, a headband fixing hole is provided at one end of the extension arm away from the receiving portion, the headband fixing hole being used to connect to a headband assembly.

[0020] Compared with the prior art, the advantages of this utility model are that by constructing the exhaust port on two different structural components of the breathing mask, such as the end face of the inlet pipe assembly and the padding assembly or headband support assembly that cooperate with each other, on the one hand, the difficulty of processing the mold can be reduced and the service life of the mold can be extended, avoiding the problem of repeatedly replacing the insert at the exhaust port in the prior art, thereby not only reducing costs but also improving production efficiency; on the other hand, since the inlet pipe assembly and the padding assembly or headband support assembly are detachably connected, the exhaust port is also divided into two parts after disassembly, which facilitates cleaning of the inside of the exhaust port. Attached Figure Description

[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the breathing mask in an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the breathing mask in an embodiment of the present invention;

[0024] Figure 3 This is a front view of the breathing mask in an embodiment of the present invention;

[0025] Figure 4 yes Figure 3 Sectional view at AA;

[0026] Figure 5 yes Figure 4 Enlarged view at point A;

[0027] Figure 6 yes Figure 1 A three-dimensional structural schematic diagram of the pad assembly shown;

[0028] Figure 7 yes Figure 1 The front view of the padding assembly shown;

[0029] Figure 8 yes Figure 7 Sectional view at BB;

[0030] Figure 9 yes Figure 1 A three-dimensional structural diagram of the headband support assembly shown;

[0031] Figure 10 yes Figure 1 The front view of the headband support assembly shown;

[0032] Figure 11 yes Figure 10 Sectional view at CC;

[0033] Figure 12 yes Figure 11 Enlarged view at point D;

[0034] Figure 13 yes Figure 1 The diagram shows a three-dimensional structure of the intake manifold assembly.

[0035] Figure label:

[0036] 20. Breathing mask; 21. Padding assembly; 22. Headband support assembly; 23. Inlet tube assembly;

[0037] 24. Vent hole; 210. First vent mating surface; 211. Pad frame; 212. Nose plug;

[0038] 213. First connecting part; 214. First fastening part;

[0039] 215. Protrusion; 2151. Intake pipe connection hole;

[0040] 216. Gasket; 217. Groove; 218. Gasket base; 219. Guide post;

[0041] 221. Receiving part; 222. Pad connection hole; 223. Second fastening part; 224. Extension arm; 225. Guide groove; 226. Headband fixing hole;

[0042] 231. Second connecting part; 232. Second exhaust port mating surface; 233. Inlet end connector;

[0043] 234. Hose; 235. Gasketed connector. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides an exhaust structure for a breathing mask, including an inlet tube assembly 23, and one or both of a padding assembly 21 and a headband support assembly 22. The padding assembly 21 is used to contact the patient's face, the headband support assembly 22 is used to support the padding assembly 21, and the inlet tube assembly 23 is in fluid communication with the padding assembly 21, used to deliver ventilation gas to the padding assembly 21 for the patient's breathing.

[0046] The intake pipe assembly 23 can be detachably connected to the padding assembly 21 or the headband support assembly 22, wherein the intake pipe assembly 23 has an exhaust port 24 on the end face of the padding assembly 21 or the headband support assembly 22 that cooperates with each other.

[0047] In some alternative embodiments, the exhaust structure includes a pad assembly 21, which is detachably connected to the headband support assembly 22 and the air inlet assembly 23 of the breathing mask 20, respectively. In this case, an exhaust port 24 for exhaust is formed between the mating end faces of the pad assembly 21 and the air inlet assembly 23.

[0048] In some alternative embodiments, the exhaust structure includes a headband support assembly 22, which is detachably connected to the padding assembly 21 and the air intake assembly 23 of the breathing mask 20, respectively. In this case, an exhaust port 24 for exhaust is formed between the mating end faces of the headband support assembly 22 and the air intake assembly 23.

[0049] In other words, in this invention, by constructing the exhaust port 24 between the mating end faces of two connected structures of the breathing mask 20, such as between the padding assembly 21 and the air inlet assembly 23, or between the headband support assembly 22 and the air inlet assembly 23, the exhaust port 24 is actually composed of two parts, one part of which is located on the padding assembly 21 (or the headband support assembly 22) and the other part is located on the air inlet assembly 23, so that the two connected structures can form a complete exhaust port 24 after mating.

[0050] This structure of the present invention simplifies the manufacturing process of the vent hole 24, thereby reducing the difficulty of processing the mold and extending the service life of the mold. On the other hand, after the two structures are disassembled, the vent hole 24 is also divided into two parts, so that its side wall and interior can be cleaned with a brush, thus improving its cleaning convenience.

[0051] The following description uses an exhaust structure including a pad assembly 21, which is detachably connected to a headband support assembly 22 and an intake pipe assembly 23, as an example.

[0052] Specifically, such as Figure 6 , Figure 7 and Figure 8 As shown, the padding assembly 21 includes a pad 216 and a padding frame 211 connected to the pad 216. The pad 216 and the padding frame 211 can be detachably connected or fixedly connected via a connecting part. Alternatively, the two can be an integrally formed structure.

[0053] like Figure 5 and Figure 6As shown, a protrusion 215 is provided on the side of the padding frame 211 away from the padding 216. The protrusion 215 passes through the headband bracket assembly 22 and is detachably connected to the air intake pipe assembly 23.

[0054] like Figure 6 As shown, the end face of the protrusion 215 away from the padding frame 211 is the first exhaust port mating surface 210, which is used to mate with the second exhaust port mating surface 232 on the intake pipe assembly 23 (see [link]). Figure 13 ( ) to be adjacent, such as Figure 5 and Figure 6 As shown, the exhaust port 24 includes a groove 217 located on the first exhaust port mating surface 210 or the second exhaust port mating surface 232.

[0055] like Figure 5 , Figure 6 and Figure 7 As shown, the description will be based on an example where the exhaust port 24 includes a groove 217 located on the first exhaust port mating surface 210.

[0056] like Figure 5 and Figure 6 As shown, the protrusion 215 is provided with an intake pipe connection hole 2151 for connecting with the intake pipe assembly 23. The intake pipe connection hole 2151 penetrates the protrusion 215 along its axial direction. A groove 217 is located on the first exhaust port mating surface 210 and penetrates the side wall of the intake pipe connection hole 2151 radially. The groove 217 connects the inner and outer sides of the intake pipe connection hole 2151.

[0057] Understandably, the groove 217 extends from the first vent mating surface 210, therefore the end of the groove 217 on the first vent mating surface 210 is an open end (e.g., Figure 6 (As shown).

[0058] Please combine Figure 13 The intake pipe assembly 23 includes a gasket connector 235, which includes a second exhaust port mating surface 232 and a second connecting portion 231 disposed on the second exhaust port mating surface 232. The second connecting portion 231 can be inserted into the intake pipe connecting hole 2151 and connected to the first connecting portion 213 in the intake pipe connecting hole 2151, thereby connecting the intake pipe assembly 23 to the gasket assembly 21.

[0059] Furthermore, the diameter of the second exhaust port mating surface 232 is larger than the diameter of the second connecting part 231. Therefore, when the second connecting part 231 is inserted into the intake pipe connecting hole 2151 and connected to the first connecting part 213, the first exhaust port mating surface 210 of the protrusion 215 abuts against the second exhaust port mating surface 232, so that the second exhaust port mating surface 232 can close the open end of the groove 217 mentioned above, thereby forming a complete exhaust port 24 for exhaust.

[0060] The number of grooves 217 can be one or more. For example, when there are multiple grooves 217, the multiple grooves 217 are respectively arranged at intervals along the circumference of the air intake pipe connection hole 2151.

[0061] Understandably, the multiple grooves 217 can also be arranged in other ways, such as the multiple grooves 217 being parallel to each other in one or more directions. For example, one group of grooves 217 in the multiple grooves 217 are arranged sequentially at intervals along the axial direction of the intake pipe connection hole 2151, that is, the group of grooves 217 are parallel to each other in the axial direction of the intake pipe connection hole 2151; or another group of grooves 217 in the multiple grooves 217 are arranged symmetrically along the radial direction of the intake pipe connection hole 2151, that is, the group of grooves 217 are radially distributed in the radial direction of the intake pipe connection hole 2151.

[0062] The arrangement of multiple grooves 217 can be configured as needed. The purpose is to connect the inner and outer sides of the air intake pipe connection hole 2151, so that the exhaust gas in the air intake pipe connection hole 2151 can be discharged to the outside of the air intake pipe connection hole 2151 through the grooves 217.

[0063] like Figure 6 As shown, the groove 217 extends axially along the intake pipe connection hole 2151 on the first exhaust hole mating surface 210, wherein the depth of the groove 217 is 0.2mm-2mm.

[0064] The width of the inner side of the groove 217 is greater than or equal to the width of the outer side of the groove 217. The inner side of the groove 217 faces the inner wall of the intake pipe connection hole 2151, and the outer side of the groove 217 faces away from the outer wall of the intake pipe connection hole 2151. The width of the groove 217 is the circumferential dimension along the intake pipe connection hole 2151. Preferably, the width of the inner side of the groove 217 is greater than the width of the outer side of the groove 217. That is, the groove 217 is constructed as a groove structure that is wider on the inner side and narrower on the outer side, which helps to increase air resistance and reduce airflow velocity and noise.

[0065] Understandably, when the exhaust port 24 includes a groove located on the second exhaust port mating surface 232, the groove can be correspondingly set on the second exhaust port mating surface 232 and set in accordance with the groove setting method described above.

[0066] like Figure 6 and Figure 8 As shown, a first connecting portion 213 is provided in the intake pipe connection hole 2151, and a second connecting portion 231 of the intake pipe assembly 23 is connected to the first connecting portion 213. When the second connecting portion 231 is connected to the first connecting portion 213, the first exhaust port mating surface 210 abuts against the second exhaust port mating surface 232.

[0067] In some alternative embodiments, the first connecting part 213 is internally threaded and the second connecting part 231 is externally threaded, that is, the gasket assembly 21 and the air intake pipe assembly 23 are connected by threads.

[0068] In some alternative embodiments, the first connecting part 213 is one of a snap-fit ​​and a slot, and the second connecting part 231 is the other of a snap-fit ​​and a slot, that is, the gasket assembly 21 and the air intake pipe assembly 23 are connected by a snap-fit.

[0069] In some alternative embodiments, the first connecting portion 213 and the second connecting portion 231 are both magnetic, for example, both are magnets, or one of them is a magnet and the other is a metal that can be attracted by a magnet, that is, the pad assembly 21 and the air intake assembly 23 are connected together by magnetic attraction.

[0070] like Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the headband support assembly 22 includes a receiving portion 221 and extension arms 224 located on both sides of the receiving portion 221. The receiving portion 221 is provided with padding connection holes 222, such as... Figure 6 As shown, a first fastening part 214 is provided on the outer wall of the protrusion 215, such as... Figure 12 As shown, a second fastening part 223 is provided on the inner wall of the gasket connection hole 222, such as... Figure 5 As shown, when the protrusion 215 is inserted into the gasket connection hole 222, the first fastening part 214 and the second fastening part 223 cooperate with each other.

[0071] One of the first fastening portion 214 and the second fastening portion 223 is configured as a snap fastener, and the other of the first fastening portion 214 and the second fastening portion 223 is configured as a flange. For example, the first fastening portion 214 is configured as a snap fastener protruding outward from the outer wall of the protrusion 215, and the second fastening portion 223 is configured as a flange protruding towards its center from the inner wall of the padding connection hole 222. When the protrusion 215 is inserted into the padding connection hole 222, the snap fastener and the flange engage with each other, thereby fixing the padding assembly 21 and the headband support assembly 22. When separating the two, the padding assembly 21 and the headband support assembly 22 can be separated by slightly deforming the first fastening portion 214 and allowing it to pass over the second fastening portion 223.

[0072] Furthermore, the number of first engaging parts 214 can be multiple, such as... Figure 6 As shown, multiple first engaging portions 214 are spaced apart circumferentially along the protrusion 215. A guide post 219 is provided between two adjacent first engaging portions 214, extending axially along the protrusion 215. Correspondingly, a guide groove 225 extending axially is provided on the inner wall of the padding connection hole 222. When the protrusion 215 is inserted into the padding connection hole 222, the guide post 219 is inserted into the corresponding guide groove 225. On one hand, the cooperation of the guide post 219 and the guide groove 225 guides the padding assembly 21 smoothly into the headband support assembly 22. On the other hand, the guide groove 225 also serves as a circumferential limiting function, thereby preventing relative circumferential movement between the padding assembly 21 and the headband support assembly 22.

[0073] Please continue reading Figure 9 The extension arm 224 is provided with a headband fixing hole 226 at one end away from the receiving part 221. The headband fixing hole 226 is used to connect to the headband assembly (not shown) so that the breathing mask 20 can be fixed to the patient's face.

[0074] In one implementation, such as Figure 7 and Figure 8 As shown, the pad 216 includes a pad base 218 connected to the pad frame 211 and a nasal plug 212 disposed on the side of the pad base 218 away from the pad frame 211. The nasal plug 212 is inserted into the patient's nostril to deliver ventilation air into the patient's nostril. Therefore, it can be understood that there are two nasal plugs 212, which are symmetrically disposed on the pad frame 211. Figure 8 As shown, the nasal plug 212 and the cavities in the pad base 218 are interconnected and connected to the air inlet pipe connection hole 2151 in the protrusion 215. The air inlet pipe connection hole 2151 is connected to the air inlet pipe assembly 23, so that ventilation gas can enter the cavities of the pad base 218 and the nasal plug 212 through the air inlet pipe assembly 23 via the air inlet pipe connection hole 2151, and be introduced into the patient's nostrils for breathing.

[0075] In one embodiment, the pad 216 is configured as a nasal mask pad or an oronasal mask pad, wherein when the pad 216 is configured as a nasal mask pad, it can cover the entire nose of the patient. When the pad 216 is configured as an oronasal mask pad, it can cover the skin below the nostrils, the mouth, and part of the face of the patient; or cover the nose and mouth of the patient.

[0076] like Figure 13As shown, the air inlet assembly 23 also includes a flexible hose 234 located on the side of the second exhaust port mating surface 232 away from the second connecting portion 231, and an air inlet connector 233 connected to the flexible hose 234. The air inlet connector 233 is a rigid connector used to connect to a breathing circuit, which can be connected to a breathing device (e.g., a ventilator) to deliver ventilation gas. The flexible hose 234 is bendable, so it can be adjusted when the patient changes position.

[0077] This invention also provides a breathing mask 20, which includes the exhaust structure or inlet tube assembly 23, the padding assembly 21, and the headband support assembly 22 described above. The breathing mask 20 of this invention also includes a headband assembly for wearing on a patient's head, thereby securing the padding assembly 21 to the patient's face. As described above, the headband assembly can pass through the headband fixing hole 226 to connect to the headband support assembly 22.

[0078] 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. An exhaust structure of a respiratory mask, characterized by, It includes an air intake assembly, and one or both of a padding assembly and a headband support assembly, wherein the air intake assembly is detachably connected to the padding assembly or the headband support assembly, and the air intake assembly is used to deliver ventilation gas; An exhaust port for exhausting air is constructed between the end faces of the air intake pipe assembly and the padding assembly or the headband support assembly that cooperate with each other.

2. The exhaust structure according to claim 1, characterized by, When the exhaust structure includes a liner assembly, the liner assembly includes a liner and a liner skeleton connected to the liner, and a protrusion is provided on the side of the liner skeleton away from the liner, and the protrusion is detachably connected to the intake pipe assembly. Wherein, the end face of the protrusion away from the pad frame is the first exhaust hole mating surface, the first exhaust hole mating surface is used to abut against the second exhaust hole mating surface on the air intake pipe assembly, and the exhaust hole includes a groove located on the first exhaust hole mating surface or the second exhaust hole mating surface.

3. The exhaust structure according to claim 2, characterized in that, The protrusion is provided with an air intake pipe connection hole for connecting with the air intake pipe assembly, and the air intake pipe connection hole penetrates the protrusion along the axial direction of the protrusion. The groove is located on the mating surface of the first exhaust hole and penetrates the side wall of the intake pipe connection hole radially along the intake pipe connection hole. The groove connects the inner and outer sides of the intake pipe connection hole. The number of grooves can be one or more. When there are multiple grooves, the multiple grooves are arranged at circumferential intervals along the air intake pipe connection hole, or the multiple grooves are parallel to each other in one or more directions.

4. The exhaust structure according to claim 3, characterized in that, The groove extends axially along the intake pipe connection hole on the mating surface of the first exhaust hole, and the depth of the groove is 0.2mm-2mm; and / or The width of the inner side of the groove is greater than or equal to the width of the outer side of the groove, wherein the inner side of the groove is the side facing the inner wall of the air intake pipe connection hole, and the outer side of the groove is the side facing away from the outer wall of the air intake pipe connection hole.

5. The exhaust structure according to claim 3 or 4, characterized in that, The intake pipe connection hole is provided with a first connection part, and the intake pipe assembly includes a second connection part provided on the mating surface of the second exhaust hole; The second connecting part is used to connect with the first connecting part, and when the two are connected, the first exhaust hole mating surface and the second exhaust hole mating surface abut against each other.

6. A breathing mask, characterized in that, The exhaust structure, including any one of claims 1-5, further includes a headband assembly for securing the exhaust structure to the patient's face.

7. The breathing mask according to claim 6, characterized in that, When the exhaust structure of the breathing mask includes a padding assembly and a headband support assembly, the headband support assembly includes a receiving portion and extension arms located on both sides of the receiving portion. The receiving portion is used to be detachably connected to the padding assembly, and the extension arms are used to be connected to the headband assembly.

8. The breathing mask according to claim 7, characterized in that, The receiving part is provided with a pad connection hole, the pad assembly is provided with a first fastening part, and the inner wall of the pad connection hole is provided with a second fastening part. When the pad assembly is connected to the pad connection hole, the first fastening part and the second fastening part cooperate with each other.

9. The breathing mask according to claim 8, characterized in that, There are multiple first fastening parts, and a guide post is provided between two adjacent first fastening parts. The guide post is used to cooperate with the guide groove in the gasket connection hole.

10. The breathing mask according to any one of claims 7-9, characterized in that, The extension arm has a headband fixing hole at one end away from the receiving part, which is used to connect to the headband assembly.

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