Tube assembly, breathing mask and ventilation treatment equipment

Abstract

The invention relates to the field of ventilation treatment equipment, and discloses a tube assembly, a breathing mask and ventilation treatment equipment. The pipe assembly comprises a first pipe fitting and a second pipe fitting, and has a connection state in which the first pipe fitting and the second pipe fitting are coaxially inserted and a separation state in which the first pipe fitting and the second pipe fitting are separated from each other; the pipe assembly comprises a connecting structure used for connecting the first pipe fitting and the second pipe fitting, and the connecting structure is arranged to be capable of preventing the first pipe fitting and the second pipe fitting from being separated from each other when the first pipe fitting and the second pipe fitting are in the connecting state. Therefore, the first pipe fitting and the second pipe fitting can be prevented from being separated under unexpected conditions to influence medium circulation.

Description

[0001] This application is a divisional application of a Chinese patent application with the application number 201911413205.1, the application date of December 31, 2019, and the title of "Tube Assembly, Respiratory Mask and Ventilation Therapy Device". Technical Field

[0002] The present invention relates to the field of ventilation therapy devices, and particularly to a tube assembly, a respiratory mask including the tube assembly, and a ventilation therapy device including the respiratory mask. Background Art

[0003] Existing ventilation therapy devices generally include a main unit for generating treatment gas, a patient interface device, and a ventilation pipeline connecting the main unit and the patient interface device. The patient interface device usually has types of respiratory masks such as nasal masks, oro-nasal masks, nasal pillow masks, and full-face masks. The typical structure of a respiratory mask includes a frame, a gasket, a bent tube, and a headband. The gasket is fixed on the frame and forms a breathing cavity together with the frame. One end of the bent tube is connected to the ventilation pipeline, and the other end is connected to the frame to deliver the treatment gas from the main unit into the breathing cavity. The headband is connected to the patient's head to fix the respiratory mask on the patient's head. During use, the gasket contacts the patient's face and achieves sealing with the face, and the patient's mouth and / or nose are located in the breathing cavity.

[0004] However, the above-mentioned ventilation therapy devices have the following problems: When the patient wants to pause the treatment and directly disconnect the respiratory mask from the ventilation pipeline, since the main unit is still in working state, a large leakage noise will be generated at the port of the ventilation pipeline, and it is also possible to trigger an equipment alarm due to excessive leakage. Summary of the Invention

[0005] The purpose of the present invention is to provide a tube assembly, a respiratory mask including the tube assembly, and a ventilation therapy device including the respiratory mask to solve the above problems.

[0006] To achieve the above purpose, in the first aspect of the present invention, a tube assembly is provided. The tube assembly includes a first pipe fitting and a second pipe fitting. The tube assembly has a connection state in which the first pipe fitting and the second pipe fitting are coaxially inserted and a separation state in which the first pipe fitting and the second pipe fitting are separated from each other. The first pipe fitting has an inlet end for connecting to a medium source and an outlet end for connecting to the second pipe fitting;

[0007] The first pipe fitting has a discharge hole, and the discharge hole is configured such that in the connection state, the discharge hole is closed to allow the medium from the medium source to enter the second pipe fitting; in the separation state, the discharge hole is opened to allow the medium from the medium source to be discharged to the outside from the discharge hole;

[0008] The pipe assembly includes a valve structure configured such that, in the connected state, the valve structure opens the outlet end of the first pipe fitting to allow the medium from the medium source to enter the second pipe fitting; and in the separated state, the valve structure closes the outlet end to allow the medium from the medium source to be discharged to the outside through the discharge hole.

[0009] Optionally, the valve structure includes a valve plate rotatably disposed within the first pipe fitting, the axis of rotation of the valve plate being perpendicular to the axial direction of the first pipe fitting. The valve plate is capable of rotating between a first position where it closes the discharge hole and opens the outlet end of the first pipe fitting, and a second position where it opens the discharge hole and closes the outlet end of the first pipe fitting, where:

[0010] The valve plate is arranged such that in the second position, the edge of the valve plate abuts against the inner wall surface of the first pipe fitting, and the discharge hole is formed in the pipe wall of the first pipe fitting or on the valve plate; or

[0011] The valve plate is arranged such that in the second position, there is a gap between the edge of the valve plate and the inner wall surface of the first pipe fitting, and this gap forms the discharge hole.

[0012] Optionally, the valve structure includes a valve core movably disposed along the axial direction of the first pipe fitting within the first pipe fitting. The discharge hole is formed in the pipe wall of the first pipe fitting, and the second pipe fitting is provided with a medium flow channel. The pipe assembly is configured such that, in the connected state, the valve core moves to the upstream of the discharge hole along the direction of medium flow, and the part of the second pipe fitting extending into the first pipe fitting and the valve core together form the valve structure to close the discharge hole, and the first pipe fitting is communicated with the second pipe fitting through the medium flow channel; in the separated state, the valve core moves to the downstream of the discharge hole along the direction of medium flow to close the outlet end of the first pipe fitting.

[0013] Optionally, the pipe assembly includes a connection structure for connecting the first pipe fitting and the second pipe fitting, and the connection structure is arranged to prevent the first pipe fitting and the second pipe fitting from separating from each other when in the connected state; and / or

[0014] In the connected state, the first pipe fitting and the second pipe fitting can rotate relative to each other.

[0015] Optionally, the connection structure includes a mating snap and a slot, the snap being provided on one of the first pipe fitting and the second pipe fitting, and the slot being provided on the other of the first pipe fitting and the second pipe fitting.

[0016] Optionally, the tube assembly includes a restricting member configured to prevent the buckle from disengaging from the card slot when the buckle is engaged with the card slot.

[0017] Optionally, the card slot is provided on the outer wall surface of the second pipe fitting, the buckle is rotatably connected to the outer wall surface of the first pipe fitting, and the buckle is configured to be able to swing radially along the first pipe fitting to engage with or disengage from the card slot; the restricting member is a collar that is axially movably sleeved outside the first pipe fitting or the second pipe fitting; or

[0018] The card slot is an L-shaped slot formed in the wall of the second pipe fitting. The L-shaped slot includes an axial portion and a circumferential portion. The buckle is a columnar member protruding from the wall of the first pipe fitting. The columnar member can enter the axial portion and move to the circumferential portion to achieve engagement when the first pipe fitting and the second pipe fitting are inserted; the restricting member is a protrusion provided in the circumferential portion, and the protrusion can releasably stop the columnar member.

[0019] Optionally, the connection structure includes a first protrusion and a second protrusion that are adapted to each other. The first protrusion is provided on the inner wall surface or the outer wall surface of the first pipe fitting, and the second protrusion is provided on the outer wall surface or the inner wall surface of the second pipe fitting. The first protrusion and the second protrusion are arranged to be able to achieve engagement or disengagement through the relative rotation of the first pipe fitting and the second pipe fitting with respect to each other.

[0020] Optionally, the connection structure includes a first magnet and a second magnet with opposite magnetic poles. The first magnet is provided on one of the first pipe fitting and the second pipe fitting, and the second magnet is provided on the other of the first pipe fitting and the second pipe fitting; or

[0021] The connection structure includes a first thread and a second thread that are adapted to each other. The first thread is provided on one of the first pipe fitting and the second pipe fitting, and the second thread is provided on the other of the first pipe fitting and the second pipe fitting.

[0022] In a second aspect of the present invention, a breathing mask is provided. The breathing mask includes a frame, a gasket, and the tube assembly described above. The gasket is mounted on the frame and together with the frame defines a breathing cavity. The tube assembly is connected to the frame through the second pipe fitting and communicates with the breathing cavity.

[0023] In a third aspect of the present invention, a ventilation treatment device is provided. The ventilation treatment device includes the breathing mask described above.

[0024] By adopting the above technical solution, when the first pipe fitting and the second pipe fitting are inserted into each other, the valve structure opens the outlet end of the first pipe fitting to allow the medium to flow from the first pipe fitting to the second pipe fitting, and at the same time the discharge hole is closed to prevent the medium from flowing out of the discharge hole, so that the medium can only flow from the first pipe fitting to the second pipe fitting; when the first pipe fitting and the second pipe fitting are separated from each other, the valve structure closes the outlet end of the first pipe fitting to prevent the medium from flowing out through the outlet end, and at the same time the discharge hole is opened to allow the medium to be discharged to the outside at a lower flow rate. Thus, the pipe assembly of the present invention can not only ensure the effective flow of the medium, but also enable the medium to be discharged to the outside at a lower flow rate when the first pipe fitting and the second pipe fitting are separated from each other, thereby avoiding the generation of air leakage noise when the medium is a gas.

[0025] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is a cross-sectional view of the first embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0028] Figure 2 is Figure 1 a schematic diagram of the pipe assembly in

[0029] Figure 3 is a cross-sectional view of the second embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0030] Figure 4 is a cross-sectional view of the third embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0031] Figure 5 is a cross-sectional view of the fourth embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0032] Figure 6 is Figure 5 an enlarged view of part A in

[0033] Figure 7 is a schematic structural diagram of the fifth embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0034] Figure 8 is Figure 7 a cross-sectional view of

[0035] Figure 9 isFigure 8 Schematic diagram of the pipe assembly in a connected state in

[0036] Figure 10 is a cross-sectional view of the sixth embodiment of the pipe assembly in the present invention, where the pipe assembly is in a separated state;

[0037] Figure 11 is Figure 10 Schematic diagram of the pipe assembly in a connected state in

[0038] Figure 12 is Figure 9 Schematic diagram of the pipe assembly in with a valve core position limiting member provided;

[0039] Figure 13 is Figure 9 Schematic diagram of the pipe assembly in with valve cores of different structures provided;

[0040] Figure 14 is a schematic diagram of the connection structure of the first embodiment in the present invention provided on the pipe assembly, where the pipe assembly is in a separated state;

[0041] Figure 15 is Figure 14 Cross-sectional view of the pipe assembly in a connected state in

[0042] Figure 16 is a schematic diagram of the connection structure of the second embodiment in the present invention provided on the pipe assembly, where the pipe assembly is in a separated state;

[0043] Figure 17 is Figure 16 Cross-sectional view of the pipe assembly in a connected state in

[0044] Figure 18 is a schematic diagram of the connection structure of the third embodiment in the present invention provided on the pipe assembly, where the pipe assembly is in a separated state and a collar is sleeved outside the first pipe fitting;

[0045] Figure 19 is Figure 18 Cross-sectional view of

[0046] Figure 20 is Figure 19 Schematic diagram of the pipe assembly in a connected state in

[0047] Figure 21 is a cross-sectional view of the connection structure of the fourth embodiment in the present invention provided on the pipe assembly, where the pipe assembly is in a connected state;

[0048] Figure 22 is a schematic diagram of the connection structure of the fifth embodiment in the present invention provided on the pipe assembly, where the pipe assembly is in a separated state;

[0049] Figure 23 is Figure 22 the enlarged view of part B in

[0050] Figure 24 is Figure 22 the cross-sectional view of the pipe assembly in

[0051] Figure 25 is the schematic diagram of the first convex part of the connection structure in the sixth embodiment of the present invention being arranged on the first pipe fitting;

[0052] Figure 26 is the schematic diagram of the second convex part of the connection structure in the sixth embodiment of the present invention being arranged on the second pipe fitting;

[0053] Figure 27 is Figure 25 the cross-sectional view of the first pipe fitting in Figure 26 and the second pipe fitting in

[0054] Figure 28 is the schematic diagram of an embodiment of the ventilation treatment device in the present invention, in which only the breathing mask, the pipe assembly and part of the ventilation pipeline are shown;

[0055] Figure 29 is Figure 28 the cross-sectional view of the pipe assembly connected to the breathing mask and the ventilation pipeline in

[0056] Description of reference numerals

[0057] 211 - Frame, 212 - Pad, 213 - Forehead bracket, 31 - First pipe fitting, 311 - Discharge hole, 312 - Snap, 313 - Anti-slip part, 314 - First convex part, 32 - Second pipe fitting, 321 - Medium flow channel, 322 - Card slot, 323 - Protrusion, 324 - Second convex part, 33 - Valve piece, 34 - Valve core, 35 - Collar, 36 - Elbow pipe, 361 - Anti-asphyxia valve piece, 37 - Valve core limiting part, 50 - Ventilation pipeline. Detailed description of the specific implementation mode

[0058] The following will describe the specific implementation mode of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation mode described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0059] In the present invention, unless otherwise stated, the orientation terms such as "top, bottom" usually refer to the orientation shown in the accompanying drawings. "Inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0060] In a first aspect of the present invention, a pipe assembly is provided. The pipe assembly includes a first pipe fitting 31 and a second pipe fitting 32. The pipe assembly has a connected state in which the first pipe fitting 31 and the second pipe fitting 32 are coaxially inserted, and a separated state in which the first pipe fitting 31 and the second pipe fitting 32 are separated from each other. The first pipe fitting 31 has an inlet end for connecting to a medium source and an outlet end for connecting to the second pipe fitting 32. The first pipe fitting 31 has a discharge hole 311, and the discharge hole 311 is configured such that: in the connected state, the discharge hole 311 is closed to allow the medium from the medium source to enter the second pipe fitting 32; in the separated state, the discharge hole 311 is opened to allow the medium from the medium source to be discharged to the outside through the discharge hole 311. The pipe assembly further includes a valve structure, and the valve structure is configured such that: in the connected state, the valve structure opens the outlet end of the first pipe fitting 31 to allow the medium from the medium source to enter the second pipe fitting 32; in the separated state, the valve structure closes the outlet end to allow the medium from the medium source to be discharged to the outside through the discharge hole 311.

[0061] In the above, it should be noted that the hole area of the discharge hole 311 is smaller than the area of the outlet end of the first pipe fitting 31. That is to say, the medium flow rate through the discharge hole 311 is smaller than the medium flow rate at the outlet end. In use, by designing the aperture diameter and number of the discharge hole 311, the medium flow rate discharged through the discharge hole 311 can be controlled. In this way, when the first pipe fitting 31 and the second pipe fitting 32 are separated from each other, the medium cannot flow out from the outlet end of the first pipe fitting 31 and can only flow out through the discharge hole 311 at a desired lower flow rate.

[0062] By adopting the above technical solution, when the first pipe fitting 31 and the second pipe fitting 32 are inserted into each other, the valve structure opens the outlet end of the first pipe fitting 31 to allow the medium to flow from the first pipe fitting 31 to the second pipe fitting 32. At the same time, the discharge hole 311 is closed to prevent the medium from flowing out through the discharge hole 311, so that the medium can only flow from the first pipe fitting 31 to the second pipe fitting 32. When the first pipe fitting 31 and the second pipe fitting 32 are separated from each other, the valve structure closes the outlet end of the first pipe fitting 31 to prevent the medium from flowing out through the outlet end. At the same time, the discharge hole 311 is opened to allow the medium to be discharged to the outside through the discharge hole 311 at a lower flow rate. Thus, the pipe assembly of the present invention can not only ensure the effective flow of the medium, but also enable the medium to be discharged to the outside at a lower flow rate when the first pipe fitting 31 and the second pipe fitting 32 are separated from each other, thereby avoiding the generation of air leakage noise when the medium is a gas.

[0063] Among them, according to an embodiment of the valve structure in the present invention, the valve structure includes a valve plate 33 rotatably disposed in the first pipe fitting 31. The rotation axis of the valve plate 33 is perpendicular to the axial direction of the first pipe fitting 31. The valve plate 33 can be in a first position where the discharge hole 311 is closed and the outlet end of the first pipe fitting 31 is opened (see Figure 2)rotates between the second position where the discharge hole 311 is opened and the outlet end of the first pipe fitting 31 is closed (see Figure 1 ). In this case, the valve plate 33 can be arranged in two different ways. One way is to arrange the valve plate 33 so that the edge of the valve plate 33 abuts against the inner wall surface of the first pipe fitting 31 in the second position. That is to say, the valve plate 33 can completely block the outlet end. At this time, the discharge hole 311 can be opened on the pipe wall of the first pipe fitting 31 (as shown in Figure 1 and Figure 2 ), or it can be opened on the valve plate 33 (as shown in Figure 3 ); Another way is to arrange the valve plate 33 so that there is a gap between the edge of the valve plate 33 and the inner wall surface of the first pipe fitting 31 in the second position, and this gap forms the discharge hole 311 (as shown in Figure 5 and Figure 6 ).

[0064] That is to say, in the above manner, the opening and closing of the discharge hole 311 and the opening and closing of the outlet end of the first pipe fitting 31 are both realized by the valve plate 33. Of course, according to the different positions of the discharge hole 311 on the pipe wall of the first pipe fitting 31, the valve plate 33 can also cooperate with the second pipe fitting 32 to realize the function of the valve structure. As shown in Figure 4 , the valve plate 33 is connected to the top of the pipe wall of the first pipe fitting 31, and the discharge hole 311 is opened at the bottom of the pipe wall of the first pipe fitting 31. In this case, when the second pipe fitting 32 is inserted into the first pipe fitting 31, the second pipe fitting 32 pushes the valve plate 33 to the first position to open the outlet end of the first pipe fitting 31, and at the same time, the pipe wall of the second pipe fitting 32 will block the discharge hole 311. It should be noted that after the second pipe fitting 32 is inserted into the first pipe fitting 31, the outer wall surface of the second pipe fitting 32 is closely attached to the side surface of the valve plate 33 and the inner wall surface of the first pipe fitting 31 to prevent air leakage.

[0065] According to another embodiment of the valve structure of the present invention, as shown in Figures 7 - 11 , the valve structure includes a valve core 34 movably arranged in the first pipe fitting 31 along the axial direction of the first pipe fitting 31. The discharge hole 311 is opened on the pipe wall of the first pipe fitting 31, and the second pipe fitting 32 is provided with a medium flow channel 321. The pipe assembly is configured as follows: in the connected state, the valve core 34 moves to the upstream of the discharge hole 311 along the medium flow direction (that is, the direction from the first pipe fitting 31 to the second pipe fitting 32), and the part of the second pipe fitting 32 extending into the first pipe fitting 31 and the valve core 34 together form the valve structure to close the discharge hole 311, and the first pipe fitting 31 is communicated with the second pipe fitting 32 through the medium flow channel 321 (see Figure 9 and Figure 11 ); in the separated state, the valve core 34 moves to the downstream of the discharge hole 311 along the medium flow direction to close the outlet end of the first pipe fitting 31 (see Figure 8 andFigure 10 ).

[0066] In the above, the valve core 34 can be any component that can move in the first pipe 31 and can block the outlet end of the first pipe 31. For example, the valve core 34 can be a columnar body or a spherical body. Figure 8 and Figure 9 As shown, when the second pipe member 32 is inserted into the first pipe member 31, the second pipe member 32 can push the first pipe member 31 which is originally located at the second position (see Figure 8 ) moves the valve core 34 to the right to the first position (see Figure 9 ), at this time, the discharge hole 311 is covered and closed by the tube wall of the second tube 32, and the medium in the first tube 31 enters the second tube 32 through the gap between the valve core 34 and the inner wall surface of the first tube 31 and the medium flow channel 321; when the second tube 32 is separated from the first tube 31, the valve core 34 will move from the first position back to the second position under the action of the flow force of the medium, thereby blocking the outlet end and allowing the medium to be discharged through the discharge hole 311.

[0067] It can be understood that in order to enable the valve core 34 to block the outlet end when in the second position and to generate a gap with the inner wall surface of the first pipe member 31 when moving to the first position, the first pipe member 31 is configured as a variable diameter structure, such as Figures 8 - 11 shown.

[0068] In order to prevent the valve core 34 from continuing to move rightward or flipping when in the first position, thereby affecting the use of the valve core 34 and even causing equipment failure, the valve structure may further include a valve core stopper 37 disposed in the first pipe 31, and the valve core stopper 37 is configured to limit the valve core 34. Specifically, for example Figure 12 As shown, the valve core limiter 37 can be an annular boss provided on the inner wall of the first pipe member 31. When the valve core 34 is in the first position, the right side surface of the valve core 34 can abut against the left side surface of the annular boss, so that the valve core 34 cannot continue to move to the right and cannot flip. Of course, there can also be a gap between the right side surface of the valve core 34 and the left side surface of the annular boss, and the gap is smaller than the axial length of the valve core 34, so that the valve core 34 can be prevented from flipping in the horizontal direction (i.e., flipping left and right); further, the gap between the right side surface of the valve core 34 and the left side surface of the annular boss is preferably set to be smaller than the maximum diameter of the valve core 34, so that the valve core 34 can be prevented from flipping in the vertical direction (i.e., flipping up and down). In addition, for example Figure 13 As shown, the valve core 34 itself can also be made more stable in structure. Figure 12 Compared with the valve core 34, Figure 13 The center of gravity of the valve core 34 is to the right, which can improve the stability of the valve core 34 when it is in the first position. Figure 13, the magnitude of a can be between one-third and two-thirds of c, or a 2 + b 2 = c 2 , which can prevent the valve core 34 from flipping. Of course, the present invention is not limited thereto, and the valve core limiting member 37 can be any component or structure capable of performing the above-mentioned limiting on the valve core 34.

[0069] In the present invention, when the pipe assembly is in the connected state, the first pipe fitting 31 and the second pipe fitting 32 can be arranged to be rotatable relative to each other, or can be arranged not to be rotatable. In addition, the pipe assembly may further include a connection structure for connecting the first pipe fitting 31 and the second pipe fitting 32, and the connection structure is arranged to prevent the first pipe fitting 31 and the second pipe fitting 32 from separating from each other when in the connected state. Thus, it is possible to avoid the separation of the first pipe fitting 31 and the second pipe fitting 32 in the event of an accident and affect the medium flow.

[0070] According to an embodiment of the connection structure in the present invention, the connection structure includes a snap 312 and a slot 322 that are adapted to each other. The snap 312 is provided on one of the first pipe fitting 31 and the second pipe fitting 32, and the slot 322 is provided on the other of the first pipe fitting 31 and the second pipe fitting 32.

[0071] In the above embodiment, the snap 312 and the slot 322 can have various setting methods. For example Figure 14 and Figure 15 as shown, the snap 312 can be provided on the outer wall surface of the second pipe fitting 32, and the slot 322 can be provided on the inner wall surface of the first pipe fitting 31. When it is necessary to separate the first pipe fitting 31 and the second pipe fitting 32, the snap 312 and the slot 322 can be separated by applying force.

[0072] For example Figure 16 and Figure 17 as shown, the slot 322 can be provided on the outer wall surface of the second pipe fitting 32, and the snap 312 is rotatably connected to the outer wall surface of the first pipe fitting 31. The snap 312 is configured to be able to swing radially along the first pipe fitting 31 to engage or disengage with the slot 322. Among them, the slot 322 can be an arc or a ring extending circumferentially along the second pipe fitting 32, and its extension length is greater than the corresponding length of the snap 312 engaged therewith. In this case, one slot 322 can be engaged with multiple snaps 312. In addition, in this setting method, in order to prevent the snap 312 from disengaging from the slot 322 when engaged with the slot 322, the snap 312 can be set to have an engaged state engaged with the slot 322 and a separated state separated from the slot 322, and the snap 312 only swings from the engaged state to the separated state when a force is applied, and the snap 312 is always in the engaged state in the natural state, as Figure 16As shown, when it is necessary to snap the buckle 312 into the slot 322, the right end of the buckle 312 can be pressed to first swing the buckle 312 into a separated state to allow it to be snapped into the slot 322. An anti-slip portion 313 can be provided on the outer side surface of the right end of the buckle 312.

[0073] Of course, other components can also be used to prevent the buckle 312 from disengaging from the slot 322 when the buckle 312 is snapped into the slot 322. That is to say, the pipe assembly can include a restricting member for preventing the buckle 312 from disengaging from the slot 322 when the buckle 312 is snapped into the slot 322. For example Figures 18 - 20 As shown, the restricting member is a collar 35 that is axially movably sleeved outside the first pipe fitting 31 or the second pipe fitting 32. When the buckle 312 is snapped into the slot 322, the collar 35 can be moved to the left to cover the buckle 312, thereby preventing the buckle 312 from rotating. When it is necessary to separate the first pipe fitting 31 from the second pipe fitting 32, first move the collar 35 to the right to expose the buckle 312, and then rotate the buckle 312 to separate it from the slot 322.

[0074] It can be envisioned that in other embodiments, such as Figure 21 As shown, the connection structure may also only include the collar 35. The collar 35 is rotatably connected to the first pipe fitting 31. An internal thread can be provided on the inner wall surface of the collar 35. Correspondingly, an external thread can be provided on the outer wall surface of the second pipe fitting 32. By rotating the collar 35, the internal and external threads can be locked with each other, thereby connecting the first pipe fitting 31 and the second pipe fitting 32; when it is necessary to separate the first pipe fitting 31 and the second pipe fitting 32, the collar 35 can be rotated in the opposite direction to make the threads disengage, thereby completing the separation.

[0075] For example Figures 22 - 24 As shown, the slot 322 is an L-shaped groove formed in the wall of the second pipe fitting 32. The L-shaped groove includes an axial portion and a circumferential portion. The buckle 312 is a columnar member protruding from the wall of the first pipe fitting 31. The columnar member can enter the axial portion and move to the circumferential portion when the first pipe fitting 31 and the second pipe fitting 32 are inserted to achieve snapping. In this case, in order to prevent the buckle 312 from disengaging from the slot 322 when the buckle 312 is snapped into the slot 322, as Figure 23 As shown, the restricting member can be a protrusion 323 provided in the circumferential portion. The protrusion 323 can releasably stop the columnar member. During use, by rotating the first pipe fitting 31 or the second pipe fitting 32, the columnar member can move past the protrusion 323 and move to the left of the protrusion 323 to achieve limiting. When it is necessary to separate the first pipe fitting 31 from the second pipe fitting 32, by rotating the first pipe fitting 31 or the second pipe fitting 32 in the opposite direction, the columnar member can move past the protrusion 323 and move to the right of the protrusion 323, and then disengage from the slot 322.

[0076] It should be noted that in the above, the buckle 312 and the card slot 322 can be swapped in terms of their set positions. Additionally, the buckle 312 and the card slot 322 are not limited to the above structures, and other structures capable of achieving their functions are also within the protection scope of the present invention.

[0077] According to another embodiment of the connection structure in the present invention, as Figures 25 - 27 shown, the connection structure includes a first convex portion 314 and a second convex portion 324 that are adapted to each other. The first convex portion 314 is provided on the inner wall surface or the outer wall surface of the first pipe fitting 31, and the second convex portion 324 is provided on the outer wall surface or the inner wall surface of the second pipe fitting 32. The first convex portion 314 and the second convex portion 324 are arranged to be able to achieve clamping or separation through the relative rotation of the first pipe fitting 31 and the second pipe fitting 32 with respect to each other. Specifically, as Figure 25 shown, the first convex portion 314 can be T-shaped, as Figure 26 shown, the second convex portion 324 may include two convex portions that are spaced apart from each other along the circumferential direction of the second pipe fitting 32. When the second pipe fitting 32 is inserted into the first pipe fitting 31, the first convex portion 314 and the second convex portion 324 are mutually avoided. After the insertion, by rotating the first pipe fitting 31 or the second pipe fitting 32, the first convex portion 314 and the second convex portion 324 are axially opposite to achieve clamping. At this time, the axial portion of the first convex portion 314 is clamped between the two convex portions to achieve rotational limitation. Of course, the first convex portion 314 and the second convex portion 324 are not limited to Figure 25 and Figure 26 the structures shown in, and other structures capable of achieving rotational clamping are also within the protection scope of the present invention.

[0078] It should be noted that in the above embodiment of the connection structure, the connection structure may include a plurality of buckles 312 and a plurality of card slots 322. The plurality of buckles 312 and the plurality of card slots 322 may be respectively arranged at intervals along the circumferential direction of the first pipe fitting 31 and the second pipe fitting 32.

[0079] According to yet another embodiment of the connection structure in the present invention, the connection structure may include a first magnet and a second magnet with opposite magnetic poles. The first magnet is provided on one of the first pipe fitting 31 and the second pipe fitting 32, and the second magnet is provided on the other of the first pipe fitting 31 and the second pipe fitting 32. When the first pipe fitting 31 and the second pipe fitting 32 are inserted, further connection can be achieved through the adsorption effect of the first magnet and the second magnet.

[0080] According to yet another embodiment of the connection structure in the present invention, the connection structure may include a first thread and a second thread that are adapted to each other. The first thread is provided on one of the first pipe fitting 31 and the second pipe fitting 32, and the second thread is provided on the other of the first pipe fitting 31 and the second pipe fitting 32. That is to say, the first pipe fitting 31 and the second pipe fitting 32 can be connected to each other through the threads provided on the inner wall surface or the outer wall surface.

[0081] The connection structure of the present invention is not limited to the above embodiments, and other ways can also be adopted for the connection structure. For example, a metal (such as iron) that can be magnetically attracted can be attached to the second pipe fitting 32, and an electromagnet device and a switch can be provided on the first pipe fitting 31; or corresponding electric fasteners and fastening grooves can be provided on the first pipe fitting 31 and the second pipe fitting 32 respectively. When the second pipe fitting 32 is inserted into the first pipe fitting 31, the switch is closed to form a circuit. After the electromagnet is energized, it has magnetism and attracts the metal on the second pipe fitting 32, so that the first pipe fitting 31 and the second pipe fitting 32 are not easily separated; or after the circuit is formed, the electric fastener acts to fasten the fastening groove on the second pipe fitting 32. When separating the first pipe fitting 31 and the second pipe fitting 32, operate the switch. After the electromagnet is powered off, it loses magnetism or the electric fastener returns to its original state after being powered off, and then the first pipe fitting 31 and the second pipe fitting 32 can be easily separated.

[0082] In the present invention, the pipe assembly may further include an elbow 36, and the elbow 36 is connected to one end of the second pipe fitting 32 that is away from the first pipe fitting 31. The elbow 36 and the second pipe fitting 32 can be arranged to be rotatable relative to each other, or can be arranged not to be rotatable. The elbow 36 and the second pipe fitting 32 can also be integrally formed. An anti-asphyxiation valve plate 361 can also be provided inside the elbow 36 to ensure the one-way flow of the medium.

[0083] In the present invention, the switches at the outlet end of the first pipe fitting 31 and the discharge hole 311 can also be automatically controlled. For example, when the first pipe fitting 31 is connected to the second pipe fitting 32, an electrical signal can be generated (such as through circuit connection, sensors, touch switches, etc.). This signal controls the opening of the outlet end of the first pipe fitting 31 and the closing of the discharge hole 311; when the first pipe fitting 31 is separated from the second pipe fitting 32, the connection between the first pipe fitting 31 and the second pipe fitting 32 is disconnected, and no electrical signal is generated. At this time, the outlet end of the first pipe fitting 31 is closed, and the discharge hole 311 is opened for controllable flow exhaust.

[0084] In the present invention, parameters of the discharge holes 311 (such as the number, diameter, thickness, inner cone, outer cone, hydrophobic material, etc.) can be specially designed to further control the flow rate and reduce noise. For example, when the discharge holes 311 are provided on the tube wall of the first pipe fitting 31, one of the inner wall surface and the outer wall surface of the tube wall can be formed of a hydrophobic material or a hydrophilic material, or coated with a hydrophobic material or a hydrophilic material. The other wall surface can be formed or coated with the other of the hydrophobic material and the hydrophilic material. The discharge holes 311 can be arranged in a structure with different ventilation areas at both ends, such as a trapezoid or an hourglass shape. Specifically, when the tube assembly is applied to a breathing mask, the structure of the discharge holes 311 can be set according to the depth of the mask in the sagittal plane (which divides the human body into left and right parts, and the left and right cutting planes are the sagittal planes). When the depth is small, that is, the patient's face is close to the discharge holes 311, the area of the proximal discharge holes can be made larger than that of the distal discharge holes to prevent the occurrence of large noise caused by air flow crossing; when the depth is large, that is, the patient's face is far from the discharge holes 311, the area of the proximal discharge holes can be made larger than that of the distal discharge holes to facilitate the evacuation of the discharged gas. In addition, a flow disturbance structure (such as a flow disturbance piece) can be provided between the structures from the proximal end to the distal end to reduce the noise of gas discharge.

[0085] In the present invention, the number, size, spacing and overall arrangement of the discharge holes 311 can be set in various ways. For example, the diameter range of the discharge holes 311 can be 0.4 mm - 1.5 mm, preferably 0.6 mm - 0.8 mm. The thickness of the position where the discharge holes 311 are provided can be 1 mm - 20 mm.

[0086] In the second aspect of the present invention, a breathing mask is provided, as Figure 28 and Figure 29 shown, the breathing mask includes a frame 211, a gasket 212 and the above-mentioned tube assembly. The gasket 212 is installed on the frame 211 and together with the frame 211 defines a breathing cavity. The tube assembly is connected to the frame 211 through a second pipe fitting 32 and communicates with the breathing cavity.

[0087] Wherein, when the tube assembly further includes an elbow 36, the tube assembly is connected to the frame 211 through the elbow 36.

[0088] In the third aspect of the present invention, a ventilation treatment device is provided, and the ventilation treatment device includes the above-mentioned breathing mask.

[0089] Wherein, the ventilation treatment device may further include a main machine for generating treatment gas and a ventilation pipeline 50 for connecting the main machine and the breathing mask. The main machine is the medium source mentioned above. One end of the ventilation pipeline 50 is connected to the air outlet of the main machine, and the other end is connected to the inlet end of the first pipe fitting 31.

[0090] In use, when the patient wants to pause the treatment (such as getting up to go to the bathroom), the first pipe fitting 31 can be separated from the second pipe fitting 32. At this time, the outlet end of the first pipe fitting 31 is closed, and the discharge hole 311 is opened. The first pipe fitting 31 can exhaust air with controllable flow rate, and the ventilation treatment device can work normally without alarming due to air leakage or pipeline detachment, thus not affecting the bed partner. Moreover, the ventilation treatment device can be used and stopped at any time, without affecting the patient's other activities, with simple operation, convenient use, safety and hygiene.

[0091] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0092] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0093] In addition, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, it should also be regarded as the content disclosed by the present invention.

Claims

1. A pipe assembly, characterized in that, The pipe assembly includes a first pipe fitting (31) and a second pipe fitting (32). The pipe assembly has a connected state in which the first pipe fitting (31) and the second pipe fitting (32) are coaxially inserted, and a separated state in which the first pipe fitting (31) and the second pipe fitting (32) are separated from each other. The pipe assembly includes a connection structure for connecting the first pipe fitting (31) and the second pipe fitting (32). The connection structure is configured to prevent the first pipe fitting (31) and the second pipe fitting (32) from separating from each other when in the connected state.

2. The pipe assembly according to claim 1, wherein the connection structure includes a mating buckle (312) and a slot (322). The buckle (312) is provided on one of the first pipe fitting (31) and the second pipe fitting (32), and the slot (322) is provided on the other of the first pipe fitting (31) and the second pipe fitting (32). Preferably, the pipe assembly includes a restricting member for preventing the buckle (312) from disengaging from the slot (322) when the buckle (312) is engaged with the slot (322).

3. The pipe assembly according to claim 2, characterized in that, The slot (322) is provided on the outer wall surface of the second pipe fitting (32). The buckle (312) is rotatably connected to the outer wall surface of the first pipe fitting (31). The buckle (312) is configured to be able to swing radially along the first pipe fitting (31) to engage or disengage with the slot (322).

4. The pipe assembly according to claim 3, wherein the buckle (312) is configured to always be in the engaged state in the natural state and can only swing from the engaged state to the separated state when subjected to an external force; and / or the restricting member includes a collar (35) sleeved outside the first pipe fitting (31). The collar (35) is configured to be able to move axially along the first pipe fitting (31) to cover the buckle (312) to prevent it from swinging or to expose the buckle (312) to allow it to swing.

5. The pipe assembly according to claim 3 or 4, wherein the slot (322) is an arc or a ring extending circumferentially along the second pipe fitting (32). The extending length of the slot (322) is greater than the corresponding length of the buckle (312) engaged therewith. Preferably: the connection structure includes a plurality of the buckles (312) and one slot (322). The plurality of buckles (312) are arranged at intervals circumferentially along the first pipe fitting (31), and the plurality of buckles (312) are engaged with one slot (322); or the connection structure includes a plurality of the buckles (312) and a plurality of the slots (322). The plurality of buckles (312) are arranged at intervals circumferentially along the first pipe fitting (31), and the plurality of slots (322) are arranged at intervals circumferentially along the second pipe fitting (32). The plurality of buckles (312) are engaged with the plurality of slots (322) in a one-to-one correspondence.

6. The pipe assembly according to claim 2, wherein The snap fastener (312) is provided on the outer wall surface of the second pipe fitting (32), the card slot (322) is provided on the inner wall surface of the first pipe fitting (31), and the snap fastener (312) and the card slot (322) are configured to be clamped or separated under the action of an axial force along the pipe assembly; or The card slot (322) is an L-shaped slot opened on the pipe wall of the second pipe fitting (32). The L-shaped slot includes an axial portion and a circumferential portion. The snap fastener (312) is a columnar member protruding from the pipe wall of the first pipe fitting (31). The columnar member can enter the axial portion and move to the circumferential portion during the insertion of the first pipe fitting (31) and the second pipe fitting (32) to achieve clamping. Preferably, the limiting member is a convex block (323) provided in the circumferential portion, and the convex block (323) can releasably stop the columnar member.

7. The pipe assembly according to claim 1, wherein In the connected state, the first pipe fitting (31) and the second pipe fitting (32) can rotate relative to each other.

8. The tube assembly according to claim 1, wherein, The connection structure includes a collar (35). The collar (35) is sleeved outside the first pipe fitting (31) and is rotatably connected to the first pipe fitting (31). The inner wall surface of the collar (35) is provided with internal threads, and the outer wall surface of the second pipe fitting (32) is provided with external threads adapted to the internal threads; or The connection structure includes a first convex portion (314) and a second convex portion (324) that are adapted to each other. The first convex portion (314) is provided on the inner wall surface or the outer wall surface of the first pipe fitting (31), and the second convex portion (324) is provided on the outer wall surface or the inner wall surface of the second pipe fitting (32). The first convex portion (314) and the second convex portion (324) are configured to be clamped or separated by the relative rotation of the first pipe fitting (31) and the second pipe fitting (32) with respect to each other.

9. The pipe assembly according to claim 8, wherein, The connection structure includes a plurality of the first convex portions (314) and a plurality of the second convex portions (324). The plurality of the first convex portions (314) and the plurality of the second convex portions (324) are respectively arranged at intervals along the circumferences of the first pipe fitting (31) and the second pipe fitting (32) and correspond to each other one by one; and / or The first convex portion (314) includes a T-shaped convex provided on the inner wall surface of the first pipe fitting (31). The T-shaped convex includes an axial portion extending along the axis of the first pipe fitting (31) and a circumferential portion extending along the circumference of the first pipe fitting (31). The second convex portion (324) includes two convex portions provided on the outer wall surface of the second pipe fitting (32) and spaced apart from each other along the circumference of the second pipe fitting (32). The connection structure is configured to rotate the first pipe fitting (31) or the second pipe fitting (32) so that the axial portion of the first convex portion (314) is clamped between the two convex portions to achieve rotational limitation.

10. The tube assembly according to claim 1, characterized in that, The connection structure adopts the following one setting method: Method 1: The connection structure includes a first magnet and a second magnet with opposite magnetic poles. The first magnet is disposed on one of the first pipe fitting (31) and the second pipe fitting (32), and the second magnet is disposed on the other of the first pipe fitting (31) and the second pipe fitting (32). Method 2: The connection structure includes a magnetically attracted metal part disposed on one of the first pipe fitting (31) and the second pipe fitting (32), and an electromagnet device disposed on the other of the first pipe fitting (31) and the second pipe fitting (32). The electromagnet device can be energized to attract the magnetically attracted metal part when the first pipe fitting (31) is inserted into the second pipe fitting (32), and can be de-energized to separate from the magnetically attracted metal part when the first pipe fitting (31) is separated from the second pipe fitting (32). Method 3: The connection structure includes an electric buckle disposed on one of the first pipe fitting (31) and the second pipe fitting (32), and a buckle groove disposed on the other of the first pipe fitting (31) and the second pipe fitting (32). The electric buckle can be energized to buckle the buckle groove when the first pipe fitting (31) is inserted into the second pipe fitting (32), and can be de-energized to separate from the buckle groove when the first pipe fitting (31) is separated from the second pipe fitting (32).

11. A breathing mask, characterized in that, The breathing mask includes a frame (211), a gasket (212), and the pipe assembly according to any one of claims 1-10. The gasket (212) is installed on the frame (211) and together with the frame (211) defines a breathing cavity. The pipe assembly is connected to the frame (211) through the second pipe fitting (32) and communicates with the breathing cavity.

12. A ventilation treatment device, characterized in that, The ventilation treatment device includes the pipe assembly according to any one of claims 1-10 or the breathing mask according to claim 11.

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