Adapter pipe for breathing mask and breathing mask

Abstract

The utility model provides an adapter tube for a breathing mask and the breathing mask. The adapter tube comprises a tube assembly, the pipe assembly is provided with a connector, a pipe opening and an air path channel. The orifice is connected with an external breathing mask, and the interface is connected with an external trachea; the pipe assembly is provided with a bent part with an air vent, a flexible valve plate is arranged on the bent part, the bent part forms a matching face in the air channel pipeline, and the flexible valve plate can freely rotate to the matching face to seal the air vent after air enters the connector. When the flexible valve plate is attached to the matching surface, at least part of a gap is reserved between the flexible valve plate and the matching surface; the flexible valve plate is arranged at the bent position of the pipe assembly, the state of the flexible valve plate can be freely rotated and switched according to the air inlet condition, so that opening and closing of the ventilation opening are controlled, the air inlet sealing performance and the exhaust connectivity of the air channel can be flexibly adjusted, and the service life of the air channel is prolonged. And the flexible valve plate is attached to the matching surface while a part of gap is reserved when the ventilation opening is closed, so that the comfort and the safety are particularly good.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transmission connecting pipes, in particular to a transfer pipe for a breathing mask and a breathing mask. Background Art

[0002] A breathing mask is a common medical device used to provide oxygen or positive pressure ventilation to patients to help improve respiratory function or treat respiratory diseases. When using a breathing mask, a transfer tube is usually used to connect the mask to an external air supply source (such as a ventilator) so that it can be used in conjunction with the mask.

[0003] Existing transfer tubes are generally equipped with an anti-suffocation valve for switching. During ventilation, the anti-suffocation valve rotates to cover the vent to prevent oxygen leakage and affect gas delivery and treatment effects. When not ventilating, it is necessary to ensure that the anti-suffocation valve can automatically reset to expose the vent, so that the user can expel the exhaled gas through the vent. However, the anti-suffocation valve is prone to insufficient feedback after switching. After switching, it still covers the vent tightly and is difficult to reset quickly, which greatly limits the flexibility of switching adjustment and the comfort of users, and cannot achieve good function switching, resulting in a significant reduction in the effect. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a transfer tube for a breathing mask and a breathing mask to solve the above-mentioned problem.

[0005] The utility model adopts the following scheme:

[0006] The present application provides an adapter tube for a breathing mask, comprising a tube assembly; the tube assembly is provided with an interface and a pipe mouth, and an air path connecting the interface and the pipe mouth; the pipe mouth is used to connect an external breathing mask, and the interface is used to connect an external air pipe; the tube assembly is constructed with a bending portion having an air vent, a flexible valve sheet is arranged on the bending portion, the bending portion forms a mating surface in the air path pipeline, the flexible valve sheet can freely rotate to the mating surface after receiving air intake from the interface to seal the air vent, and at least a partial gap is left between the flexible valve sheet and the mating surface when the flexible valve sheet is abutted against the mating surface.

[0007] As a further improvement, the mating surface is formed opposite to the rear side of the vent, and the flexible valve sheet is detachably arranged on the lower side of the vent, and the air intake of the interface acts on the flexible valve sheet from bottom to top.

[0008] As a further improvement, the matching surface is in the shape of an inclined surface, the flexible valve sheet is rotated onto the matching surface and the fit between the two is between 75% and 90%.

[0009] As a further improvement, the mating surface is integrally formed on the inner wall of the air path in the form of a stepped protrusion, and the lower end of the mating surface is provided with an arc-shaped protrusion connected to the inner wall for contacting the flexible valve sheet first.

[0010] As a further improvement, the flexible valve plate includes a plugging head and a plate body formed of an integral silicone mold, and a snap-fit ​​groove is provided on the tube assembly, and the snap-fit ​​groove is interference-fitted with the plugging head.

[0011] As a further improvement, when the flexible valve plate is in an initial state, the plate body is horizontally placed in the pipe assembly, and the thickness of the plate body is positively correlated with the slope of the matching surface relative to the plate body.

[0012] As a further improvement, the thickness of the sheet body is 0.5 mm to 0.65 mm, and the inclination of the matching surface relative to the sheet body is 50° to 65°.

[0013] As a further improvement, the thickness of the sheet body is 0.59 mm, and the inclination of the matching surface relative to the sheet body is 59°.

[0014] As a further improvement, the pipe assembly includes an L-shaped elbow and a straight pipe joint, the straight pipe joint can be rotatably sleeved on the L-shaped elbow, the bending portion is formed on the L-shaped elbow, the pipe mouth is arranged at the end of the L-shaped elbow, the interface is arranged at the end of the straight pipe joint, and the interface is arranged vertically relative to the pipe mouth.

[0015] The present application further provides a breathing mask, including a mask assembly and the above-mentioned adapter tube for the breathing mask.

[0016] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0017] 1. The adapter tube for a breathing mask of the present application can freely rotate and switch its own state according to the air intake situation through the flexible valve sheet provided at the bending part of the tube assembly, so as to control the opening and closing of the vent, which is conducive to flexible adjustment of the air intake sealing and exhaust connectivity of the air path, especially when the flexible valve sheet is closed, it is close to the matching surface but leaves a partial gap. On the one hand, the flexible valve sheet and the vent are not completely sealed, but have a certain adjustable space, so that the adjustment and control of the vent during air intake is more flexible, and the sealing degree of the vent can be controllably limited according to actual needs. On the other hand, if the valve sheet is completely fitted, resulting in excessive air tightness, it will increase the pressure of gas delivery and cause certain discomfort to the patient's breathing. Leaving a certain gap can avoid excessive air pressure and maintain the comfort and safety of oxygen delivery.

[0018] 2. Although there is a partial gap between the flexible valve sheet and the mating surface, the flexible valve sheet can still be effectively attached to the mating surface to prevent leakage of oxygen from the input gas channel. The existence of the gap does not affect the sealing of the gas channel, but helps to balance the gas flow and pressure. The flexible valve sheet is prone to wear or deformation during long-term use. Leaving a certain gap can reduce the friction between the flexible valve sheet and the mating surface, extending its service life and working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a transfer tube for a breathing mask according to an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Explosion diagram in ;

[0021] Figure 3 It is a cross-sectional view of an adapter tube for a breathing mask according to an embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a flexible valve sheet of a transfer tube for a breathing mask according to an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the adapter tube for the breathing mask of the embodiment of the utility model under other viewing angles;

[0024] Figure 6 This is an application scenario diagram of an adapter tube and a mask assembly for a breathing mask according to an embodiment of the utility model.

[0025] Icons: 1-tube assembly; 2-interface; 3-tube mouth; 4-bending part; 5-vent; 6-flexible valve plate; 7-matching surface; 8-arc-shaped protrusion; 9-plugging head; 10-plate body; 11-clamping groove; 12-exhaust hole; 13-L-shaped elbow; 14-straight pipe joint; 15-oxygen inlet tube; A-mask assembly. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0027] Example

[0028] Combination Figures 1 to 5 The present embodiment provides a transfer tube for a breathing mask, comprising a tube assembly 1. The tube assembly 1 is provided with an interface 2 and a pipe port 3, and an air passage connecting the interface 2 and the pipe port 3. The pipe port 3 is used to connect to an external breathing mask, and the interface 2 is used to connect to an external airway.

[0029] Among them, the tube assembly 1 constructs a bending portion 4 with a vent 5, and a flexible valve sheet 6 is arranged on the bending portion 4. The bending portion 4 forms a mating surface 7 in the air pipeline. After the air is taken in by the interface 2, the flexible valve sheet 6 can be freely rotated to the mating surface 7 to seal the vent 5, and when the flexible valve sheet 6 is abutted against the mating surface 7, at least a partial gap is left between the two.

[0030] The adapter tube for the breathing mask mentioned above can freely rotate and switch its own state according to the intake situation through the flexible valve sheet 6 provided at the bending part of the tube assembly 1, so as to control the opening and closing of the vent 5, which is conducive to the flexible adjustment of the intake sealing and exhaust connectivity of the air path.

[0031] In particular, when the vent 5 is closed, the flexible valve sheet 6 is abutted against the mating surface 7 but leaves a partial gap. On the one hand, the flexible valve sheet 6 and the vent 5 are not completely sealed, but have a certain adjustable space, so that the adjustment and control of the vent 5 during air intake is more flexible, and the sealing degree of the vent 5 can be controllably limited according to actual needs. On the other hand, if the valve sheet is completely fitted and the airtightness is too high, the pressure of gas delivery will increase, causing certain discomfort to the patient's breathing. Leaving a certain gap can avoid excessive air pressure and maintain the comfort and safety of oxygen delivery.

[0032] It is understandable that, although there is a partial gap between the flexible valve plate 6 and the mating surface 7, the flexible valve plate 6 can still be effectively attached to the mating surface 7 to prevent leakage of oxygen input into the gas path, and the existence of the gap does not affect the sealing of the gas path, but helps to balance the gas flow and pressure. In addition, the flexible valve plate 6 is prone to wear or deformation during long-term use, and leaving a certain gap can reduce the friction between the flexible valve plate 6 and the mating surface 7, thereby extending its service life and working stability.

[0033] like Figure 1 and Figure 3 As shown, in this embodiment, the mating surface 7 is formed opposite to the rear side of the vent 5, and the flexible valve sheet 6 is detachably arranged on the lower side of the vent 5, and the air intake of the interface 2 acts on the flexible valve sheet 6 from bottom to top. Thus, the flexible valve sheet 6 receives the air intake of the interface 2, flips upward to be close to the mating surface 7, and then effectively controls the opening and closing of the vent 5. When the air intake is cancelled, the flexible valve sheet 6 is reset to the initial position by its own gravity to improve the accuracy and stability of gas delivery. The air intake acts on the flexible valve sheet 6 from bottom to top, making the blocking of the vent 5 more flexible. Correspondingly, the controllability and adaptability of the flexible valve sheet 6 are particularly good, avoiding the discomfort caused by excessive air pressure to the patient's breathing, which is conducive to the comfort and safety of the user and improves the treatment effect. In addition, the detachable setting of the flexible valve sheet 6 reduces the difficulty of maintenance and replacement, helps to extend the service life of the transfer tube, and reduces maintenance costs.

[0034] like Figure 3 As shown, in this embodiment, the mating surface 7 is in the shape of an inclined plane, and the flexible valve disc 6 is rotated onto the mating surface 7 and the fit between the two is between 75% and 90%. The inclined mating surface 7 helps to better achieve the fit and seal between the flexible valve disc 6 and the mating surface 7, and the fit between the two is between 75% and 90%. When the flexible valve disc 6 is fitted to the mating surface 7, a certain gap is left between the two, and the fit is within a specified range to ensure a compromise between sealing and fit.

[0035] Specifically, the mating surface 7 is integrally formed on the inner wall of the air passage in the form of a stepped protrusion, and the lower end of the mating surface 7 is provided with an arc-shaped protrusion 8 connected with the inner wall, which is used to contact the flexible valve plate 6 first. The protruding mating surface 7 can reduce the swing path of the flexible valve plate 6, which is more conducive to the close matching of the two. The arc-shaped protrusion 8 at the lower end can effectively contact the adjacent flexible valve plate 6, so that an intermediate gap is directly generated between the flexible valve plate 6 and the inclined mating surface 7. In particular, after the air intake is cancelled, the arc-shaped protrusion 8 can effectively act on the flexible valve plate 6, so that it can quickly separate from the mating surface 7.

[0036] Furthermore, the flexible valve plate 6 includes a plugging head 9 and a plate body 10 formed of an integral silicone mold. A snap-fit ​​groove 11 is provided on the pipe assembly 1, and the snap-fit ​​groove 11 is interference-fitted with the plugging head 9. The flexible valve plate 6 made of silicone material has softness and elasticity, which is conducive to the frequent rotation and switching of the valve plate. The plugging head 9 is larger than the size of the snap-fit ​​groove 11 at least along its length and thickness direction, so that the plugging head 9 can be tightly embedded in the snap-fit ​​groove 11 to achieve a stable disassembly and assembly connection.

[0037] In this embodiment, when the flexible valve sheet 6 is in the initial state, the sheet body 10 is horizontally placed in the pipe assembly 1, and the thickness of the sheet body 10 is positively correlated with the slope of the mating surface 7 relative to the sheet body 10. Therefore, the flexible valve sheet 6 is in a horizontal state when not acted upon by gas flow or pressure, and after gas flow or pressure, the flexible valve sheet 6 will make corresponding rotation adjustments. The thickness of the sheet body 10 is positively correlated with the slope of the mating surface 7 relative to the sheet body 10, and the thickness of the flexible valve sheet 6 will be adjusted to adapt to the slope change of the mating surface 7. The thickness of the flexible valve sheet 6 is selected according to the inclination of the mating surface 7 to match the sealing effect and the fit between them.

[0038] Preferably, the thickness of the sheet body 10 is 0.5 mm to 0.65 mm, and the slope of the matching surface 7 relative to the sheet body 10 is 50° to 65°. Preferably, the thickness of the sheet body 10 is 0.59 mm, and the slope of the matching surface 7 relative to the sheet body 10 is 59°. The thickness value and the slope value are always selected to be an integer multiple of one hundred, so that the effect of the close fit between the flexible valve sheet 6 and the matching surface 7 is more significant.

[0039] The vent 5 is configured in a nostril-like structure. A plurality of dense exhaust holes 12 are arranged above the vent 5. The cross section of the exhaust holes 12 is trumpet-shaped and gradually widens from the outside to the inside. Furthermore, the exhaust holes 12 are not in contact with the flexible valve sheet 6 at all times.

[0040] like Figure 2 and Figure 5 As shown, in this embodiment, the pipe assembly 1 includes an L-shaped elbow 13 and a straight pipe joint 14, the straight pipe joint 14 is rotatably sleeved on the L-shaped elbow 13, the bending portion is formed on the L-shaped elbow 13, the pipe mouth 3 is arranged at the end of the L-shaped elbow 13, the interface 2 is arranged at the end of the straight pipe joint 14, and the interface 2 is arranged vertically relative to the pipe mouth 3. Among them, the L-shaped elbow 13 and the straight pipe joint 14 are made of plastic, and the straight pipe joint 14 can be rotated or turned on the L-shaped elbow 13, which helps to adjust the flexibility of the gas connection. The interface 2 is arranged vertically relative to the pipe mouth 3, so that the oxygen is input to the pipe assembly 1 to maintain a vertical or nearly vertical output, which helps to optimize the smoothness and efficiency of gas delivery.

[0041] Among them, the L-shaped elbow 13 is a three-way pipe, one of which is the pipe port 3, and the other is connected to the straight pipe joint 14. Another port is opened on the side of the pipe body, which is an oxygen input pipe 15 with a silicone plug, and the air intake of the input pipe will not directly act on the flexible valve plate 6.

[0042] Combination Figure 6 This embodiment further provides a breathing mask, including a mask assembly A and the above-mentioned adapter tube for the breathing mask. Obviously, the mask assembly A is suitable for users to wear and use, and the external airway is connected to the terminal respirator, nebulizer, drug delivery device, etc., which are not listed here.

[0043] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

Claims

1. An adapter tube for a breathing mask, characterized in that: It comprises a tube assembly; the tube assembly is provided with an interface and a pipe mouth, and an air path connecting the interface and the pipe mouth; the pipe mouth is used to connect an external breathing mask, and the interface is used to connect an external air pipe; the tube assembly is constructed with a bending portion having an air vent, a flexible valve sheet is arranged on the bending portion, and a matching surface is formed in the air path pipeline on the bending portion, and the flexible valve sheet can be freely rotated to the matching surface after receiving air from the interface to seal the air vent, and at least a partial gap is left between the flexible valve sheet and the matching surface when the flexible valve sheet is abutted.

2. The adapter tube for a breathing mask according to claim 1, characterized in that: The matching surface is formed directly opposite to the rear side of the vent, and the flexible valve sheet is detachably arranged at the lower side of the vent, and the air intake of the interface acts on the flexible valve sheet from bottom to top.

3. The adapter tube for a breathing mask according to claim 1, characterized in that: The matching surface is in the shape of an inclined surface, and the flexible valve sheet is rotated onto the matching surface and the degree of fit between the two is between 75% and 90%.

4. The adapter tube for a breathing mask according to claim 3, characterized in that: The matching surface is integrally formed on the inner wall of the gas path in the form of a stepped protrusion, and the lower end of the matching surface is provided with an arc-shaped protrusion connected with the inner wall for contacting with the flexible valve sheet first.

5. The adapter tube for a breathing mask according to claim 4, characterized in that: The flexible valve plate comprises a plugging head and a plate body which are integrally formed of silicone. A clamping groove is provided on the pipe assembly, and the clamping groove is interference-fitted with the plugging head.

6. The adapter tube for a breathing mask according to claim 5, characterized in that: When the flexible valve sheet is in an initial state, the sheet body is horizontally placed in the pipe assembly, and the thickness of the sheet body is positively correlated with the slope of the matching surface relative to the sheet body.

7. The adapter tube for a breathing mask according to claim 6, characterized in that: The thickness of the sheet body is 0.5 mm to 0.65 mm, and the inclination of the matching surface relative to the sheet body is 50° to 65°.

8. The adapter tube for a breathing mask according to claim 7, characterized in that: The thickness of the sheet body is 0.59 mm, and the inclination of the matching surface relative to the sheet body is 59°.

9. The adapter tube for a breathing mask according to claim 1, characterized in that: The pipe assembly includes an L-shaped elbow and a straight pipe joint. The straight pipe joint can be rotatably sleeved on the L-shaped elbow. The bending portion is formed on the L-shaped elbow. The pipe mouth is arranged at the end of the L-shaped elbow. The interface is arranged at the end of the straight pipe joint, and the interface is arranged vertically relative to the pipe mouth.

10. A breathing mask, characterized in that: It comprises a mask assembly and a transfer tube for a breathing mask as described in any one of claims 1 to 9.

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