Bent pipe assembly and breathing mask

Abstract

The utility model provides an elbow assembly and a breathing mask, comprising: an elbow, the two ends of which are respectively provided with a breathing port and an air source interface, and the elbow is also provided with a mounting hole; and the anti-suffocation valve comprises a valve body detachably assembled in the mounting hole and provided with a communication port and a valve plate elastically connected to the valve body and located in the bent pipe, the communication port is used for being communicated with the outside atmosphere, and the valve plate can be bent to seal the air source connector or the communication port so that the breathing port can be communicated with the communication port or the air source connector. The mounting hole is formed in the bent pipe, and the anti-suffocation valve is detachably assembled in the mounting hole, so that the disassembly and assembly difficulty of the anti-suffocation valve is greatly reduced; moreover, the valve body of the anti-suffocation valve is provided with the communicating port communicated with the outside atmosphere, when the valve plate is bent to the sealed air source connector, the breathing port is communicated with the communicating port, it is guaranteed that the outside atmosphere can be breathed into the breathing port when an air source is not connected or the air source is abnormal, and the suffocation phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a curved pipe assembly and a breathing mask. Background Art

[0002] Wearing a breathing mask as a non-invasive ventilation treatment has been widely used to treat obstructive sleep apnea (OSA), chronic obstructive pulmonary emphysema (COPD), etc. The breathing mask is connected to the ventilator through a tube to deliver continuous pressure ventilation (CPAP) or variable pressure ventilation to the patient's airway, such as bi-level pressure ventilation that changes with the patient's respiratory cycle or automatic pressure-adjusting ventilation that changes with the patient's monitoring situation.

[0003] In the related art, the breathing mask includes a bent pipe for accessing the air source, the bent pipe is provided with a breathing port, an air source interface and a connecting port, and an anti-suffocation valve is provided in the bent pipe. When the anti-suffocation valve is in the initial position, the air source interface is sealed, and at this time the connecting port is connected to the breathing port; when the anti-suffocation valve rotates 90° under the pressure of the air source, the connecting port is sealed, and at this time the air source interface is connected to the breathing port. However, since the anti-suffocation valve is in the form of a sheet, the outer dimensions of the anti-suffocation valve are relatively large, which makes it difficult to install the anti-suffocation valve in the bent pipe; moreover, when the anti-suffocation valve is damaged and needs to be replaced, it is difficult to remove the anti-suffocation valve from the bent pipe, resulting in defects in the anti-suffocation structure of the breathing mask. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bent pipe assembly and a breathing mask, aiming to solve the problem of high difficulty in disassembly and assembly of anti-suffocation valve sheets in the related art.

[0005] In order to solve the above technical problems, the utility model provides a first aspect of a curved pipe assembly, comprising:

[0006] The bent pipe has a breathing port and an air source interface at both ends, and the bent pipe is also provided with a mounting hole; and,

[0007] The anti-suffocation valve comprises a valve body which can be detachably assembled on the mounting hole and has a connecting port, and a valve sheet which is elastically connected to the valve body and located in the bent pipe. The connecting port is used to connect to the outside atmosphere, and the valve sheet can be bent to seal the air source interface or the connecting port so that the breathing port is connected to the connecting port or the air source interface.

[0008] Optionally, one of the bent pipe and the valve body is provided with a snap-fit ​​portion, and the other is provided with a snap-fit ​​groove, and the snap-fit ​​portion is snapped into the snap-fit ​​groove.

[0009] Optionally, the snap-fit ​​portion is formed by protruding from the inner circumferential wall of the bent pipe along the radial direction of the mounting hole, the snap-fit ​​groove is arranged on the outer side of the valve body, and the snap-fit ​​groove is arranged around the connecting hole.

[0010] Optionally, the anti-suffocation valve further comprises a first protrusion and a second protrusion formed by protruding from the outer side of the valve body along the radial direction of the mounting hole, and the first protrusion and the second protrusion are spaced apart to form the buckle groove.

[0011] Optionally, the anti-suffocation valve is flexible, the first protrusion is located inside the bent pipe, and a protrusion height of the first protrusion is smaller than a protrusion height of the buckled portion; the second protrusion is arranged outside the bent pipe, and the second protrusion is flush with an outer surface of the bent pipe.

[0012] Optionally, the buckling portion and the buckling groove are interference fit, and the buckling groove is at least partially a straight line segment.

[0013] Optionally, a supporting slope is provided at one end of the valve body disposed in the bent pipe, and an angle between the supporting slope and the valve plate is an acute angle. When the valve plate is bent to seal the communication port, the valve plate fits against the supporting slope.

[0014] Optionally, the valve sheet includes a fixing portion fixed to the valve body, a bending portion fixed to an end of the fixing portion away from the valve body, and a sealing portion fixed to an end of the bending portion away from the fixing portion, and the thickness of the bending portion is smaller than the thickness of the fixing portion and the sealing portion.

[0015] Optionally, the mounting hole and the breathing port are coaxially arranged, and the air source interface is located between the breathing port and the mounting hole.

[0016] A second aspect of the utility model provides a breathing mask, comprising a mask body and a curved pipe assembly as described above, wherein the curved pipe assembly is connected to the mask body.

[0017] Compared with the related art, the beneficial effects of a bent pipe assembly and a breathing mask in the utility model are as follows: by arranging a mounting hole on the bent pipe and detachably assembling the anti-suffocation valve in the mounting hole, the difficulty of disassembling and assembling the anti-suffocation valve is greatly reduced; moreover, a connecting port connected to the outside atmosphere is provided on the valve body of the anti-suffocation valve, and when the valve plate is bent to the sealed air source interface, the breathing port is connected to the connecting port, ensuring that the breathing port can inhale the outside atmosphere when the air source is not connected or the air source is abnormal, thereby avoiding suffocation; when the valve plate is bent to the sealed connecting port, the breathing port is connected to the air source interface, and the connected air source can be inhaled from the breathing port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the elbow assembly provided by the embodiment of the utility model;

[0020] Figure 2 is a cross-sectional view of a bend pipe assembly provided in an embodiment of the utility model;

[0021] Figure 3 It is an exploded view of the elbow assembly provided in the embodiment of the utility model.

[0022] In the accompanying drawings, each figure mark represents: 1. bent pipe; 11. breathing port; 12. air source interface; 13. mounting hole; 14. snap-fit ​​portion; 2. anti-suffocation valve; 21. valve body; 211. snap-fit ​​groove; 212. supporting slope; 213. connecting port; 22. valve sheet; 221. fixing portion; 222. bending portion; 223. sealing portion; 23. first protruding portion; 24. second protruding portion. DETAILED DESCRIPTION

[0023] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0026] Example:

[0027] The utility model embodiment provides a breathing mask, comprising a mask body and a bend pipe assembly, wherein the bend pipe assembly is connected to the mask body; wherein the bend pipe assembly can be detachably connected or fixedly connected to the mask body.

[0028] See also Figure 1 , Figure 2 and Figure 3 The elbow assembly includes an elbow 1 and an anti-suffocation valve 2. The two ends of the elbow 1 are respectively provided with a breathing port 11 and an air source interface 12, and the elbow 1 is also provided with a mounting hole 13; the anti-suffocation valve 2 includes a valve body 21 that can be detachably assembled in the mounting hole 13 and has a communication port 213, and a valve plate 22 that is elastically connected to the valve body 21 and located in the elbow 1. The communication port 213 is used to connect to the outside atmosphere, and the valve plate 22 can be bent to the sealed air source interface 12 or the communication port 213, so that the breathing port 11 is connected to the communication port 213 or the air source interface 12.

[0029] By arranging a mounting hole 13 on the bent pipe 1 and the anti-suffocation valve 2 can be detachably assembled on the mounting hole 13, the difficulty of disassembling and assembling the anti-suffocation valve 2 is greatly reduced; moreover, a connecting port 213 connected to the outside atmosphere is provided on the valve body of the anti-suffocation valve 2. When the valve plate 22 is bent to the sealed air source interface 12, the breathing port 11 is connected to the connecting port 213, ensuring that the breathing port 11 can breathe in the outside atmosphere when the air source is not connected or the air source is abnormal, thereby avoiding suffocation; when the valve plate 22 is bent to the sealed connecting port 213, the breathing port 11 is connected to the air source interface 12, and the connected air source can be inhaled from the breathing port 11.

[0030] It should be noted that the bending of the valve plate 22 is driven by gas pressure. When the gas source interface 12 is connected to the gas source, the pressure generated by the gas will drive the valve plate 22 to bend in the direction of the connecting port 213 until it abuts against the valve body and seals the connecting port 213; when the gas source interface 12 is not connected to the gas source, the valve plate 22 is bent in the direction of the gas source interface 12 under the action of the rebound force until it abuts against the inner circumferential wall of the bent pipe 1 and seals the gas source interface 12.

[0031] In some embodiments, one of the elbow 1 and the valve body 21 is provided with a buckle connection portion 14, and the other is provided with a buckle connection groove 211, and the buckle connection portion 14 is buckled into the buckle connection groove 211. Figure 2 and Figure 3 As shown, the buckle part 14 is formed by protruding from the inner peripheral wall of the elbow 1 along the radial direction of the mounting hole 13, and the buckle groove 211 is provided on the outer side of the valve body 21, and the buckle groove 211 is provided around the communication hole, that is, the buckle part 14 and the buckle groove 211 are both annular, which is convenient for forming the elbow 1 and the anti-suffocation valve 2. According to actual needs, the buckle groove 211 can also be provided on the inner peripheral wall of the elbow 1, and the buckle part 14 can be provided on the outer side of the valve body 21.

[0032] See also Figure 2 and Figure 3 The anti-suffocation valve 2 also includes a first protrusion 23 and a second protrusion 24 protruding from the outer side of the valve body 21 along the radial direction of the mounting hole 13, and the first protrusion 23 and the second protrusion 24 are spaced to form a buckle groove 211. Specifically, the anti-suffocation valve 2 is flexible, the first protrusion 23 is located in the elbow 1, and the protrusion height of the first protrusion 23 is less than the protrusion height of the buckle 14, so that the buckle 14 can be buckled into the buckle groove 211 when the valve body 21 is installed in the mounting hole 13; the second protrusion 24 is arranged outside the elbow 1, and the second protrusion 24 is flush with the outer surface of the elbow 1, which can improve the aesthetics of the elbow assembly. According to actual needs, the anti-suffocation valve 2 can be made of soft rubber, such as silicone and rubber.

[0033] See also Figure 3 The buckle portion 14 and the buckle groove 211 are in interference fit, which can prevent the valve body 21 from rotating relative to the elbow 1; moreover, the buckle groove 211 is at least partially a straight segment, which can further prevent the valve body 21 from rotating relative to the elbow 1, thereby preventing the valve plate 22 from deviating relative to the gas source interface 12. According to actual needs, the cross section of the buckle groove 211 can be semicircular, rectangular or other polygonal.

[0034] See also Figure 2 and Figure 3 The end of the valve body 21 disposed in the elbow 1 is provided with a support slope 212, and the angle between the support slope 212 and the valve disc 22 is an acute angle. When the valve disc 22 is bent to seal the communication port 213, the valve disc 22 fits the support slope 212. The support slope 212 can avoid the valve disc 22 rotating 90° before sealing the communication port 213, which is beneficial to reduce the damage to the valve disc 22 when rotating and improve the service life of the valve disc 22. According to actual needs, the angle between the support slope 212 and the valve disc 22 can be 30°, 45°, 60°, etc.

[0035] See also Figure 2 and Figure 3The valve plate 22 includes a fixing portion 221 fixed to the valve body 21, a bending portion 222 fixed to one end of the fixing portion 221 away from the valve body 21, and a sealing portion 223 fixed to one end of the bending portion 222 away from the fixing portion 221. The fixing portion 221, the bending portion 222 and the sealing portion 223 are all in sheet shape. The thickness of the bending portion 222 is less than that of the fixing portion 221 and the sealing portion 223, which can reduce the bending difficulty of the valve plate 22. Therefore, the valve plate 22 can be bent under the premise of low air source pressure, thereby improving the application range of the anti-suffocation valve 2. According to actual needs, the valve body 21 is provided with an installation groove, which is provided on one side of the valve body 21 close to the air source interface 12, and the fixing portion 221 is fixed in the installation groove.

[0036] See also Figure 1 Figure 2 The mounting hole 13 and the breathing port 11 are coaxially arranged, the air source interface 12 is located between the breathing port 11 and the mounting hole 13, and the air source interface 12 is closer to the mounting hole 13, which can reduce the length of the valve plate 22 and help reduce the difficulty of bending the valve plate 22.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe bending assembly, characterized in that: include: The bent pipe has a breathing port and an air source interface at both ends, and the bent pipe is also provided with a mounting hole; and, The anti-suffocation valve comprises a valve body which can be detachably assembled on the mounting hole and has a connecting port, and a valve sheet which is elastically connected to the valve body and located in the bent pipe. The connecting port is used to connect to the outside atmosphere, and the valve sheet can be bent to seal the air source interface or the connecting port so that the breathing port is connected to the connecting port or the air source interface.

2. The elbow assembly according to claim 1, characterized in that: One of the bent pipe and the valve body is provided with a buckling portion, and the other is provided with a buckling groove, and the buckling portion is buckled into the buckling groove.

3. The elbow assembly according to claim 2, characterized in that: The buckle connection portion is formed by protruding from the inner peripheral wall of the bent pipe along the radial direction of the mounting hole, and the buckle connection groove is arranged on the outer side of the valve body, and the buckle connection groove is arranged around the communication port.

4. The elbow assembly according to claim 3, characterized in that: The anti-suffocation valve further includes a first protrusion and a second protrusion formed by protruding from the outer side of the valve body along the radial direction of the mounting hole, and the first protrusion and the second protrusion are spaced apart to form the buckle groove.

5. The elbow assembly according to claim 4, characterized in that: The anti-suffocation valve is flexible, the first protrusion is located in the bent pipe, and the protrusion height of the first protrusion is smaller than the protrusion height of the buckle portion; The second protrusion is arranged outside the curved pipe, and the second protrusion is flush with the outer surface of the curved pipe.

6. The elbow assembly according to claim 3, characterized in that: The buckling portion and the buckling groove are interference fit, and at least part of the buckling groove is a straight line segment.

7. The elbow assembly according to claim 1, characterized in that: One end of the valve body disposed in the bent pipe is provided with a supporting inclined surface, and the angle between the supporting inclined surface and the valve plate is an acute angle. When the valve plate is bent to seal the communication port, the valve plate fits against the supporting inclined surface.

8. The elbow assembly according to claim 1, characterized in that: The valve plate includes a fixing portion fixed to the valve body, a bending portion fixed to one end of the fixing portion away from the valve body, and a sealing portion fixed to one end of the bending portion away from the fixing portion, and the thickness of the bending portion is smaller than the thickness of the fixing portion and the sealing portion.

9. The elbow assembly according to claim 1, characterized in that: The mounting hole and the breathing port are coaxially arranged, and the air source interface is located between the breathing port and the mounting hole.

10. A breathing mask, characterized in that: It comprises a mask body and an elbow assembly as described in any one of claims 1 to 9, wherein the elbow assembly is connected to the mask body.

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