CN110975095A

CN110975095A - Tube assembly, respiratory mask and ventilation treatment equipment

Info

Publication number: CN110975095A
Application number: CN201911413205.1A
Authority: CN
Inventors: 周明钊; 庄志
Original assignee: BMC Medical Co Ltd
Current assignee: BMC Medical Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-10

Abstract

The invention relates to the field of ventilation treatment equipment and discloses a pipe assembly, a breathing mask and ventilation treatment equipment. When the pipe assembly of the present invention is used, when the first pipe member and the second pipe member are inserted into each other, the valve structure opens the outlet end of the first pipe member to allow the medium to flow from the first pipe member to the second pipe member, while the discharge hole is closed to prevent the medium from flowing out from the discharge hole, so that the medium can only flow from the first pipe member to the second pipe member; when the first pipe member and the second pipe member are separated from each other, the valve structure closes the outlet end of the first pipe member to prevent the medium from flowing out through the outlet end, while the discharge hole is opened to discharge the medium from the discharge hole to the outside at a low flow rate. Therefore, the pipe assembly provided by the invention not only can ensure the effective flowing of the medium, but also can discharge the medium to the outside at a lower flow rate when the first pipe fitting and the second pipe fitting are separated from each other, so that the generation of gas leakage noise when the medium is gas is avoided.

Description

Tube assembly, respiratory mask and ventilation treatment equipment

Technical Field

The present invention relates to the field of ventilatory therapy devices, and in particular to a tube assembly, a respiratory mask comprising the tube assembly and a ventilatory therapy device comprising the respiratory mask.

Background

Existing ventilation therapy devices typically include a host machine for generating therapeutic gas, a patient interface device, typically a respiratory mask of the type nasal mask, oronasal mask, nasal pillow mask, full face mask, and the like, and a ventilation circuit connecting the host machine and the patient interface device. A typical configuration of a respiratory mask includes a frame, a cushion secured to the frame and forming a breathing chamber with the frame, an elbow connected at one end to a ventilation line and at the other end to the frame for delivering therapeutic gas from a motor into the breathing chamber, and headgear connected to the head of a patient for securing the respiratory mask to the head of the patient. In use, the cushion contacts and seals against the face of a patient whose mouth and/or nose is located within the breathing cavity.

However, the above-described ventilation therapy device has the following problems: when a patient wants to suspend treatment and directly separates the breathing mask from the ventilation pipeline, the host machine is still in a working state, so that high air leakage noise is generated at the port of the ventilation pipeline, and equipment alarm is possibly caused due to excessive air leakage.

Disclosure of Invention

It is an object of the present invention to provide a tube assembly, a respiratory mask comprising the tube assembly and a ventilation therapy device comprising the respiratory mask to solve the above problems.

In order to achieve the above object, a first aspect of the present invention provides a pipe assembly including a first pipe member and a second pipe member, the pipe assembly having a connected state in which the first pipe member and the second pipe member are coaxially inserted and a separated state in which the first pipe member and the second pipe member are separated from each other, the first pipe member having an inlet end for connecting a medium source and an outlet end for connecting the second pipe member;

the first pipe has a discharge hole configured to: in the connected state, the discharge hole is closed to allow the medium from the medium source to enter the second pipe member; in the separated state, the discharge hole is opened to discharge the medium from the medium source from the discharge hole to the outside;

the tube assembly includes a valve structure configured to: in the connected state, the valve structure opens the outlet end of the first tube to allow medium from the medium source to enter the second tube; in the separated state, the valve structure closes the outlet port to discharge the medium from the medium source from the discharge hole to the outside.

Optionally, the valve structure includes a valve plate rotatably disposed in the first pipe, a rotation axis of the valve plate is perpendicular to an axial direction of the first pipe, the valve plate is capable of rotating between a first position closing the discharge hole and opening the outlet end of the first pipe and a second position opening the discharge hole and closing the outlet end of the first pipe, wherein:

the edge of the valve plate is abutted against the inner wall surface of the first pipe fitting when the valve plate is arranged at the second position, and the discharge hole is formed in the pipe wall of the first pipe fitting or the valve plate; or

The valve plate is arranged to have a gap between an edge of the valve plate and an inner wall surface of the first pipe when in the second position, and the gap forms the discharge hole.

Optionally, the valve structure includes a valve core movably disposed in the first pipe member along an axial direction of the first pipe member, the discharge hole is opened in a pipe wall of the first pipe member, the second pipe member is opened with a medium flow passage, and the pipe assembly is configured to: in the connected state, the valve element is moved to the upstream of the discharge hole in the medium flow direction, a portion of the second pipe member extending into the first pipe member constitutes the valve structure together with the valve element to close the discharge hole, and the first pipe member communicates with the second pipe member through the medium flow passage; in the separated state, the spool moves to downstream of the discharge hole in a medium flow direction to close the outlet end of the first pipe.

Optionally, the pipe assembly comprises a connecting structure for connecting the first and second pipe elements, the connecting structure being arranged to prevent the first and second pipe elements from separating from each other when in the connected state; and/or

In the connected state, the first and second pipe elements are rotatable relative to each other.

Optionally, the connecting structure comprises a snap and a catch adapted to be disposed on one of the first and second pipe elements and the catch is disposed on the other of the first and second pipe elements.

Optionally, the tube assembly includes a limiting member for preventing the clip from being disengaged from the clip groove when the clip is clipped to the clip groove.

Optionally, the clamping groove is formed in an 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 capable of swinging in a radial direction of the first pipe fitting to be clamped with or separated from the clamping groove; the limiting piece is a sleeve ring which is movably sleeved outside the first pipe fitting or the second pipe fitting along the axial direction of the first pipe fitting; or

The clamping groove is an L-shaped groove formed in the pipe wall of the second pipe fitting, the L-shaped groove comprises an axial part and a radial part, the buckle is a columnar part which is convexly arranged on the pipe wall of the first pipe fitting, and the columnar part can enter the axial part and move to the radial part to realize clamping when the first pipe fitting and the second pipe fitting are spliced; the limiting member is a bump disposed within the radial portion, the bump being capable of releasably stopping the post.

Optionally, the connection structure includes a first protruding portion and a second protruding portion that are matched with each other, the first protruding portion is disposed on an inner wall surface or an outer wall surface of the first pipe, the second protruding portion is disposed on an outer wall surface or an inner wall surface of the second pipe, and the first protruding portion and the second protruding portion are configured to be capable of being clamped or separated through mutual relative rotation of the first pipe and the second pipe.

Optionally, the connection structure comprises first and second magnets of opposite poles, the first magnet being disposed on one of the first and second pipe pieces and the second magnet being disposed on the other of the first and second pipe pieces; or

The connection structure includes first and second mating threads, the first thread being disposed on one of the first and second pipe elements and the second thread being disposed on the other of the first and second pipe elements.

A second aspect of the invention provides a respiratory mask comprising a frame, a cushion mounted to the frame and defining with the frame a breathing chamber, and a tube assembly as described above connected to the frame by the second tube and communicating with the breathing chamber.

A third aspect of the invention provides a ventilation therapy device comprising a respiratory mask as described above.

By adopting the technical scheme, when the first pipe fitting and the second pipe fitting are mutually inserted, 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 simultaneously 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 member and the second pipe member are separated from each other, the valve structure closes the outlet end of the first pipe member to prevent the medium from flowing out through the outlet end, while the discharge hole is opened to discharge the medium from the discharge hole to the outside at a low flow rate. Therefore, the pipe assembly provided by the invention not only can ensure the effective flowing of the medium, but also can discharge the medium to the outside at a lower flow rate when the first pipe fitting and the second pipe fitting are separated from each other, so that the generation of gas leakage noise when the medium is gas is avoided.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a cross-sectional view of a first embodiment of a tube assembly of the present invention, wherein the tube assembly is shown in a disconnected state;

FIG. 2 is a schematic illustration of the tube assembly of FIG. 1 in a connected state;

FIG. 3 is a cross-sectional view of a second embodiment of the tube assembly of the present invention, wherein the tube assembly is in a disconnected state;

FIG. 4 is a cross-sectional view of a third embodiment of the tube assembly of the present invention, wherein the tube assembly is in a disconnected state;

FIG. 5 is a cross-sectional view of a fourth embodiment of the tube assembly of the present invention, wherein the tube assembly is in a disconnected state;

FIG. 6 is an enlarged view of portion A of FIG. 5;

FIG. 7 is a schematic structural view of a fifth embodiment of the tubular assembly of the present invention, wherein the tubular assembly is in a disconnected state;

FIG. 8 is a cross-sectional view of FIG. 7;

FIG. 9 is a schematic illustration of the tube assembly of FIG. 8 in a connected state;

FIG. 10 is a cross-sectional view of a sixth embodiment of a tube assembly of the present invention, wherein the tube assembly is in a disconnected state;

FIG. 11 is a schematic illustration of the tube assembly of FIG. 10 in a connected state;

FIG. 12 is a schematic illustration of the tube assembly of FIG. 9 with a spool stop;

FIG. 13 is a schematic illustration of the tube assembly of FIG. 9 with a different configuration of valve cartridge;

FIG. 14 is a schematic view showing the coupling structure of the first embodiment of the present invention provided to a pipe assembly in a separated state;

FIG. 15 is a cross-sectional view of the tube assembly of FIG. 14 in a connected state;

FIG. 16 is a schematic view showing the coupling structure according to the second embodiment of the present invention provided to a pipe assembly in a separated state;

FIG. 17 is a cross-sectional view of the tube assembly of FIG. 16 in a connected state;

FIG. 18 is a schematic view of a third embodiment of the connection structure of the present invention disposed on a pipe assembly, wherein the pipe assembly is in a disconnected state and a collar is disposed around a first pipe element;

FIG. 19 is a cross-sectional view of FIG. 18;

FIG. 20 is a schematic illustration of the tube assembly of FIG. 19 in a connected state;

fig. 21 is a sectional view showing a coupling structure according to a fourth embodiment of the present invention provided to a pipe assembly in a coupled state;

FIG. 22 is a schematic view showing a fifth embodiment of the coupling structure according to the present invention provided to a pipe assembly in a disconnected state;

fig. 23 is an enlarged view of a portion B in fig. 22;

FIG. 24 is a cross-sectional view of the tube assembly of FIG. 22 in a connected state;

fig. 25 is a schematic view of a first projection of a connection structure according to a sixth embodiment of the present invention provided on a first pipe;

fig. 26 is a schematic view showing a second projection of the coupling structure according to the sixth embodiment of the present invention provided on a second pipe;

FIG. 27 is a cross-sectional view of the first tube member of FIG. 25 joined to the second tube member of FIG. 26, wherein an elbow is connected to an end of the second tube member facing away from the first tube member;

FIG. 28 is a schematic view of an embodiment of the ventilation therapy device of the present invention, wherein only the respiratory mask, tube assembly and portions of the ventilation circuit are shown;

fig. 29 is a cross-sectional view of the tube assembly of fig. 28 attached to a respiratory mask and a ventilation circuit.

Description of the reference numerals

211-frame, 212-liner, 213-forehead support, 31-first pipe fitting, 311-discharge hole, 312-buckle, 313-antiskid part, 314-first bulge, 32-second pipe fitting, 321-medium flow channel, 322-clamping groove, 323-lug, 324-second bulge, 33-valve plate, 34-valve core, 35-lantern ring, 36-elbow, 361-anti-asphyxia valve plate, 37-valve core limiting part and 50-vent pipeline.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, use of the terms "top" and "bottom" generally refer to the orientation as shown in the drawings. "inner and outer" refer to the inner and outer contours of the respective component itself.

A first aspect of the present invention provides a pipe assembly comprising a first pipe member 31 and a second pipe member 32, the pipe assembly having a connected state in which the first pipe member 31 and the second pipe member 32 are coaxially inserted and a separated state in which the first pipe member 31 and the second pipe member 32 are separated from each other, the first pipe member 31 having an inlet end for connection to a medium source and an outlet end for connection to the second pipe member 32; the first pipe member 31 has a discharge hole 311, and the discharge hole 311 is configured to: in the connected state, the discharge hole 311 is closed to let the medium from the medium source enter the second pipe member 32; in the separated state, the discharge hole 311 is opened to discharge the medium from the medium source from the discharge hole 311 to the outside; the tube assembly further includes a valve structure configured to: in the connected state, the valve structure opens the outlet end of the first pipe 31 to let medium from the medium source enter the second pipe 32; in the separated state, the valve structure closes the outlet port to allow the medium from the medium source to be discharged from the discharge hole 311 to the outside.

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 31, that is, the medium flow rate of the discharge hole 311 is smaller than the medium flow rate of the outlet end. In use, by designing the hole diameter and number of the discharge holes 311, the flow rate of the medium discharged from the discharge holes 311 can be controlled, so that when the first pipe member 31 and the second pipe member 32 are separated from each other, the medium cannot flow out from the outlet end of the first pipe member 31 but can flow out through the discharge holes 311 at a desired low flow rate.

By adopting the technical scheme, when the first pipe fitting 31 and the second pipe fitting 32 are plugged 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, and simultaneously the discharge hole 311 is closed to prevent the medium from flowing out of 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 member 31 and the second pipe member 32 are separated from each other, the valve structure closes the outlet end of the first pipe member 31 to prevent the medium from flowing out through the outlet end, while the discharge hole 311 is opened to discharge the medium from the discharge hole 311 to the outside at a low flow rate. Thus, the pipe assembly of the present invention can not only ensure effective flow of the medium but also discharge the medium to the outside at a low flow rate when the first pipe member 31 and the second pipe member 32 are separated from each other, thereby preventing generation of leakage noise when the medium is a gas.

Wherein, according to an embodiment of the valve structure of the present invention, the valve structure comprises a valve sheet 33 rotatably disposed in the first pipe 31, a rotation axis of the valve sheet 33 is perpendicular to an axial direction of the first pipe 31, and the valve sheet 33 is rotatable between a first position (see fig. 2) closing the discharge hole 311 and opening the outlet end of the first pipe 31 and a second position (see fig. 1) opening the discharge hole 311 and closing the outlet end of the first pipe 31. In this case, the valve plate 33 may be disposed in two different ways, one way is to dispose the valve plate 33 in the second position such that the edge of the valve plate 33 abuts against the inner wall surface of the first pipe 31, that is, the valve plate 33 can completely block the outlet end, and at this time, the discharge hole 311 may be formed on the pipe wall of the first pipe 31 (as shown in fig. 1 and 2) or on the valve plate 33 (as shown in fig. 3); the other is to arrange the valve sheet 33 so that, in the second position, there is a gap between the edge of the valve sheet 33 and the inner wall surface of the first pipe member 31, the gap forming the discharge hole 311 (shown in fig. 5 and 6).

That is, 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 31 are both achieved by the valve sheet 33. Of course, the valve plate 33 can also cooperate with the second pipe member 32 to perform the function of the valve structure, depending on the position of the discharge hole 311 on the pipe wall of the first pipe member 31. As shown in fig. 4, the valve plate 33 is connected to the top of the pipe wall of the first pipe 31, and the discharge hole 311 is opened at the bottom of the pipe wall of the first pipe 31, in this case, when the second pipe 32 is inserted into the first pipe 31, the second pipe 32 pushes the valve plate 33 to the first position to open the outlet end of the first pipe 31, and the pipe wall of the second pipe 32 blocks the discharge hole 311. After the second pipe 32 is inserted into the first pipe 31, the outer wall surface of the second pipe 32 is tightly attached to the side surface of the valve sheet 33 and the inner wall surface of the first pipe 31, so as to prevent air leakage.

According to another embodiment of the valve structure of the present invention, as shown in fig. 7 to 11, the valve structure includes a valve core 34 movably disposed in the first pipe 31 in an axial direction of the first pipe 31, a discharge hole 311 opened in a pipe wall of the first pipe 31, and a second pipe 32 opened with a medium flow passage 321, the pipe assembly being configured to: in the connected state, the spool 34 is moved to the upstream of the discharge hole 311 in the medium flow direction (i.e., the direction from the first pipe member 31 to the second pipe member 32), the portion of the second pipe member 32 protruding into the first pipe member 31 constitutes the valve structure together with the spool 34 to close the discharge hole 311, and the first pipe member 31 communicates with the second pipe member 32 through the medium flow passage 321 (see fig. 9 and 11); in the separated state, the spool 34 moves to the downstream of the discharge hole 311 in the medium flow direction to close the outlet end of the first pipe member 31 (see fig. 8 and 10).

In the above description, the valve body 34 may be any member that can move in the first pipe member 31 and can close the outlet end of the first pipe member 31, and for example, the valve body 34 may be a cylindrical body or a spherical body. In use, for example, as shown in fig. 8 and 9, when the second pipe 32 is inserted into the first pipe 31, the second pipe 32 can push the valve element 34 originally located at the second position (see fig. 8) to move rightward to the first position (see fig. 9), at this time, the discharge hole 311 is covered by the pipe wall of the second pipe 32 and is closed, and the medium in the first pipe 31 enters the second pipe 32 through the gap between the valve element 34 and the inner wall surface of the first pipe 31 and the medium flow passage 321; when the second pipe member 32 is separated from the first pipe member 31, the spool 34 is moved from the first position back to the second position by the flow force of the medium, thereby blocking the outlet port and allowing the medium to be discharged through the discharge hole 311.

It is to be understood that, in order to allow the valve body 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 provided with a diameter-variable structure, as shown in fig. 8 to 11.

In order to prevent the spool 34 from moving to the right or turning over when in the first position, thereby affecting the use of the spool 34 and even causing equipment failure, the valve structure may further include a spool stopper 37 disposed in the first pipe 31, wherein the spool stopper 37 is configured to limit the spool 34. Specifically, for example, as shown in fig. 12, the spool stopper 37 may be an annular boss disposed on an inner wall of the first pipe 31, and when the spool 34 is at the first position, a right side surface of the spool 34 may abut against a left side surface of the annular boss, so that the spool 34 cannot move to the right continuously and cannot turn over. Of course, the right side surface of the valve core 34 may have a space with the left side surface of the annular boss, and the space is smaller than the axial length of the valve core 34, so that the valve core 34 can be prevented from being turned in the horizontal direction (i.e., turned left and right); further, the interval between the right side surface of the spool 34 and the left side surface of the annular boss is preferably set smaller than the maximum diameter of the spool 34, so that the spool 34 is prevented from being flipped in the vertical direction (i.e., flipped up and down). Further, for example, as shown in fig. 13, the valve body 34 itself may be made more stable in structure, and the valve body 34 in fig. 13 may have its center of gravity located to the right as compared with the valve body 34 in fig. 12, whereby the stability of the valve body 34 in the first position can be improved. Further, referring to fig. 13, a may be between one-third and two-thirds of c, or a²+b²＝c²This prevents the spool 34 from tipping over. Of course, the present invention is not limited to this, and the valve element stopper 37 may be any member or structure capable of performing the above-described stopper of the valve element 34.

In the present invention, when the pipe assembly is in the connection state, the first pipe 31 and the second pipe 32 may be configured to be rotatable relative to each other, or may be configured not to be rotatable. In addition, the pipe assembly may further include a coupling structure for coupling the first pipe member 31 and the second pipe member 32, the coupling structure being configured to prevent the first pipe member 31 and the second pipe member 32 from being separated from each other in the coupled state. Therefore, the first pipe fitting 31 and the second pipe fitting 32 can be prevented from being separated accidentally to influence the medium circulation.

According to an embodiment of the connection structure of the present invention, the connection structure comprises a snap 312 and a catch 322, which are adapted to each other, the snap 312 is disposed on one of the first tube 31 and the second tube 32, and the catch 322 is disposed on the other of the first tube 31 and the second tube 32.

In the above embodiments, the snap 312 and the snap slot 322 may have various arrangements. For example, as shown in fig. 14 and 15, the catch 312 may be provided on an outer wall surface of the second pipe member 32, and the catch 322 may be provided on an inner wall surface of the first pipe member 31, wherein when it is necessary to separate the first pipe member 31 from the second pipe member 32, the catch 312 and the catch 322 may be separated with a strong force.

For example, as shown in fig. 16 and 17, the locking groove 322 may be disposed on an outer wall surface of the second pipe 32, the catch 312 may be rotatably connected to an outer wall surface of the first pipe 31, and the catch 312 may be configured to swing in a radial direction of the first pipe 31 to be locked with or separated from the locking groove 322. Wherein, the clamping groove 322 can be an arc shape or a ring shape extending along the circumferential direction of the second pipe element 32, and the extending length thereof is longer than the corresponding length of the clamping buckle 312 clamped therewith, in this case, one clamping groove 322 can be clamped with a plurality of clamping buckles 312. In addition, in this arrangement, in order to prevent the clip 312 from being disengaged from the slot 322 when the clip 312 is clipped to the slot 322, the clip 312 may be set to have a clipping state of being clipped to the slot 322 and a separating state of being separated from the slot 322, and the clip 312 swings from the clipping state to the separating state only when receiving a force, and the clip 312 is always in the clipping state in a natural state, as shown in fig. 16, when the clip 312 needs to be clipped to the slot 322, the right end of the clip 312 may be pressed to swing the clip 312 to the separating state to allow clipping with the slot 322. An anti-slip portion 313 may be provided on an outer side surface of a right end of the catch 312.

Of course, other means may be used to prevent the clip 312 from being disengaged from the clip slot 322 when the clip is clipped to the clip slot 322. That is, the tube assembly may include a restriction for preventing the catch 312 from being disengaged from the catch 322 when it is caught in the catch 322. For example, as shown in fig. 18-20, the limiting member is a collar 35 that is movably sleeved on the first pipe 31 or the second pipe 32 along the axial direction of the first pipe 31. When the clip 312 is snapped into the detent 322, the collar 35 can be moved to the left to cover the clip 312, thereby preventing the clip 312 from rotating. When the first tube 31 and the second tube 32 need to be separated, the collar 35 is moved to the right to leak the catch 312, and then the catch 312 is rotated to be separated from the catch 322.

It is contemplated that in other embodiments, as shown in fig. 21, the connection structure may include only the collar 35, the collar 35 may be rotatably connected to the first pipe member 31, an inner wall surface of the collar 35 may be provided with an internal thread, and correspondingly, an outer wall surface of the second pipe member 32 may be provided with an external thread, and the internal and external threads may be locked to each other by rotating the collar 35, thereby connecting the first pipe member 31 and the second pipe member 32; when it is desired to separate the first and second

tubular members

31, 32, the collar 35 can be rotated in the opposite direction to withdraw the threads, thereby completing the separation.

For example, as shown in fig. 22-24, the locking groove 322 is an L-shaped groove opened on the wall of the second pipe element 32, the L-shaped groove includes an axial portion and a radial portion, and the locking buckle 312 is a cylindrical member protrudingly disposed on the wall of the first pipe element 31, and the cylindrical member can enter the axial portion and move to the radial portion to realize locking when the first pipe element 31 is plugged with the second pipe element 32. In this case, in order to prevent the catch 312 from being disengaged from the catch 322 when it is caught in the catch 322, as shown in fig. 23, the restricting member may be a projection 323 provided in the radial portion, and the projection 323 can releasably catch the column. In use, the column can be moved past the projection 323 to the left of the projection 323 to achieve the limit by rotating the first tube 31 or the second tube 32. When it is necessary to separate the first tube 31 and the second tube 32, the column can be moved to the right side of the projection 323 beyond the projection 323 and then separated from the engaging groove 322 by rotating the first tube 31 or the second tube 32 in the opposite direction.

It should be noted that, in the above description, the positions of the buckle 312 and the slot 322 may be exchanged. In addition, the structure of the buckle 312 and the slot 322 is not limited to the above structure, and other structures capable of implementing the functions are also within the protection scope of the present invention.

According to another embodiment of the connection structure of the present invention, as shown in fig. 25 to 27, the connection structure includes a first protrusion 314 and a second protrusion 324 which are matched with each other, the first protrusion 314 is disposed on an inner wall surface or an outer wall surface of the first pipe 31, the second protrusion 324 is disposed on an outer wall surface or an inner wall surface of the second pipe 10, and the first protrusion 314 and the second protrusion 324 are configured to be able to be engaged with or disengaged from each other by rotating the first pipe 31 and the second pipe 32 relative to each other. Specifically, as shown in fig. 25, the first protruding portion 314 may be T-shaped, as shown in fig. 26, the second protruding portion 324 may include two protruding portions arranged at intervals along the circumferential direction of the second pipe 32, when the second pipe 32 is inserted into the first pipe 31, the first protruding portion 314 and the second protruding portion 324 are avoided from each other, after the second pipe is inserted, the first pipe 31 or the second pipe 32 is rotated, the first protruding portion 314 and the second protruding portion 324 are axially and relatively clamped, and at this time, an axial portion of the first protruding portion 314 is clamped between the two protruding portions to achieve rotation limitation. Of course, the first and

second protrusions

314 and 324 are not limited to the structure shown in fig. 25 and 26, and other structures capable of achieving rotational clamping are also within the scope of the present invention.

It should be noted that, in the above embodiment of the connection structure, the connection structure may include a plurality of snaps 312 and a plurality of slots 322. The plurality of catches 312 and the plurality of catching grooves 322 may be respectively disposed at intervals along the circumferential direction of the first pipe 31 and the second pipe 32.

According to still another embodiment of the coupling structure of the present invention, the coupling structure may include a first magnet and a second magnet having opposite poles, the first magnet being disposed on one of the first pipe 31 and the second pipe 32, and the second magnet being disposed on the other of the first pipe 31 and the second pipe 32. After the first pipe 31 and the second pipe 32 are inserted, further connection can be realized through the adsorption of the first magnet and the second magnet.

According to still another embodiment of the connection structure of the present invention, the connection structure may include first and second threads that are adapted, the first thread being provided on one of the first and

second pipe elements

31 and 32, and the second thread being provided on the other of the first and

second pipe elements

31 and 32. That is, the first pipe member 31 and the second pipe member 32 may be connected to each other by a screw provided on the inner wall surface or the outer wall surface.

The connection structure of the present invention is not limited to the above-described embodiment, and the connection structure may be in other forms. For example, a magnetically attractable metal (e.g., iron) may be attached to the second pipe member 32, and an electromagnet device and a switch may be provided on the first pipe member 31; or the first pipe element 31 and the second pipe element 32 are respectively provided with corresponding electric buckles and corresponding electric grooves. When the second pipe fitting 32 is inserted into the first pipe fitting 31, the switch is closed to form a loop, the electromagnet is magnetic after being electrified and attracts metal on the second pipe fitting 32, so that the first pipe fitting 31 and the second pipe fitting 32 are not easy to separate; or after the loop is formed, the electric button acts to fasten the fastening groove on the second pipe element 32. When separating first pipe fitting 31 and second pipe fitting 32, operating switch, lose magnetism after the electro-magnet outage or the electronic knot of outage back recovers, alright separate first pipe fitting 31 and second pipe fitting 32 easily.

In the present invention, the pipe assembly may further comprise an elbow 36, the elbow 36 being connected to an end of the second pipe member 32 facing away from the first pipe member 31. The elbow 36 and the second tube member 32 may be configured to rotate relative to each other or may be configured to be non-rotatable. The elbow 36 and the second tube member 32 may also be formed integrally. An anti-asphyxia flap 361 may also be disposed within elbow 36 to ensure one-way flow of media.

In the present invention, the opening and closing of the outlet end of the first pipe 31 and the opening and closing of the discharge hole 311 may be automatically controlled. For example, when the first pipe 31 is connected to the second pipe 32, an electrical signal (e.g., a circuit, a sensor, a tact switch, etc.) may be generated, which controls the outlet end of the first pipe 31 to open and the outlet hole 311 to close; after the first pipe 31 is separated from the second pipe 32, the first pipe 31 is disconnected from the second pipe 32, no electric signal is generated, the outlet end of the first pipe 31 is closed, the discharge hole 311 is opened, and the controllable flow rate is discharged.

In the present invention, parameters (such as number, diameter thickness, inner cone, outer cone, hydrophobic material, etc.) of the discharge holes 311 can be designed specifically to further control the flow rate and reduce noise. For example, when the discharge holes 311 are provided on the pipe wall of the first pipe member 31, one of the inner wall surface and the outer wall surface of the pipe wall may be formed of or coated with a hydrophobic material or a hydrophilic material. The other wall may be formed from or coated with the other of the hydrophobic material and the hydrophilic material. The discharge holes 311 may be provided in a structure having different vent areas at both ends, for example, a trapezoidal or hourglass shape. Specifically, when the tube assembly is applied to a respiratory mask, the vent holes 311 can be arranged according to the depth of the mask in the direction of the sagittal plane (the human body is cut into a left part and a right part, and the left and right sections are the sagittal plane), when the depth is small, namely the face of a patient is closer to the vent holes 311, the area of the vent holes at the near end can be larger than that of the vent holes at the far end, and the condition that the airflow is crossed to cause high noise can be prevented; when the depth is large, that is, the face of the patient is far from the discharge hole 311, the area of the proximal discharge hole is larger than that of the distal discharge hole, so that the discharged gas can be easily evacuated. Additionally, flow disrupting structures (e.g., spoilers) may be disposed between the proximal and distal structures to reduce noise from the gas discharge.

In the present invention, the number, size, spacing, and overall arrangement of the discharge holes 311 may be variously set. For example, the diameter of the discharge holes 311 may range from 0.4mm to 1.5mm, preferably from 0.6mm to 0.8 mm. The thickness of the discharge holes 311 may be set to 1mm to 20 mm.

A second aspect of the present invention provides a respiratory mask, as shown in fig. 28 and 29, comprising a frame 211, a cushion 212, and the above-described tube assembly, the cushion 212 being mounted to the frame 211 and defining with the frame 211 a breathing chamber, the tube assembly being connected to the frame 211 by a second tube member 32 and communicating with the breathing chamber.

Wherein, in case the tube assembly further comprises an elbow 36, said tube assembly is connected to the frame 211 via the elbow 36.

Wherein the ventilation therapy device may further comprise a host machine for generating therapeutic gas and a ventilation line 50 for connecting the host machine to the respiratory mask. The main unit is the medium source, and one end of the ventilation pipeline 50 is connected to the air outlet of the main unit, and the other end is connected to the inlet end of the first pipe 31.

When the ventilation treatment equipment is used, when a patient wants to pause treatment (such as getting up to a toilet), the first pipe fitting 31 and the second pipe fitting 32 are separated, at the moment, the outlet end of the first pipe fitting 31 is closed, the discharge hole 311 is opened, the first pipe fitting 31 can discharge air with a controllable flow, and the ventilation treatment equipment can work normally and cannot give an alarm due to air leakage or pipeline falling, so that bed partners cannot be influenced. Moreover, the ventilation treatment equipment can be used and stopped at any time, does not influence other activities of the patient, and has the advantages of simple and convenient operation, convenient use, safety and sanitation.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A pipe assembly, characterized in that it comprises a first pipe element (31) and a second pipe element (32), said pipe assembly having a connected condition in which said first pipe element (31) is coaxially plugged with said second pipe element (32) and a disconnected condition in which said first pipe element (31) and said second pipe element (32) are disconnected from each other, said first pipe element (31) having an inlet end for connection to a source of a medium and an outlet end for connection to said second pipe element (32);

the first pipe member (31) has a discharge hole (311), the discharge hole (311) being configured to: in the connected state, the discharge opening (311) is closed to let the medium from the medium source enter the second pipe member (32); in the separated state, the discharge hole (311) is opened to discharge the medium from the medium source from the discharge hole (311) to the outside;

the tube assembly includes a valve structure configured to: in the connected state, the valve structure opens the outlet end of the first pipe (31) for medium from the medium source to enter the second pipe (32); in the separated state, the valve structure closes the outlet end to allow medium from the medium source to be discharged from the discharge hole (311) to the outside.

2. The tube assembly of claim 1,

the valve structure comprises a valve plate (33) rotatably arranged in the first pipe (31), the rotation axis of the valve plate (33) is perpendicular to the axial direction of the first pipe (31), the valve plate (33) can rotate between a first position closing the outlet hole (311) and opening the outlet end of the first pipe (31) and a second position opening the outlet hole (311) and closing the outlet end of the first pipe (31), wherein:

the edge of the valve plate (33) is abutted against the inner wall surface of the first pipe fitting (31) when the valve plate (33) is arranged at the second position, and the discharge hole (311) is formed in the pipe wall of the first pipe fitting (31) or formed in the valve plate (33); or

The valve plate (33) is arranged to have a gap between an edge of the valve plate (33) and an inner wall surface of the first pipe (31) when in the second position, the gap forming the drain hole (311).

3. The pipe assembly according to claim 1, wherein the valve structure comprises a spool (34) movably disposed in the first pipe member (31) in an axial direction of the first pipe member (31), the discharge hole (311) is opened in a pipe wall of the first pipe member (31), the second pipe member (32) is opened with a medium flow passage (321), the pipe assembly is configured to: in the connected state, the valve element (34) is moved to the upstream of the discharge hole (311) in the medium flow direction, the portion of the second pipe member (32) protruding into the first pipe member (31) constitutes the valve structure together with the valve element (34) to close the discharge hole (311), and the first pipe member (31) communicates with the second pipe member (32) through the medium flow passage (321); in the separated state, the spool (34) moves downstream of the discharge port (311) in a medium flow direction to close the outlet end of the first pipe (31).

4. The pipe assembly of any one of claims 1-3,

the pipe assembly comprises a connecting structure for connecting the first pipe member (31) and the second pipe member (32), the connecting structure being arranged to prevent the first pipe member (31) and the second pipe member (32) from being separated from each other in the connected state; and/or

In the connected state, the first and second pipe members (31, 32) are rotatable relative to each other.

5. The pipe assembly of claim 4, wherein the connection structure comprises a mating catch (312) and a catch (322), the catch (312) being disposed on one of the first and second pipe elements (31, 32) and the catch (322) being disposed on the other of the first and second pipe elements (31, 32).

6. The tube assembly of claim 5, comprising a restraint for preventing the catch (312) from disengaging from the catch (322) when the catch is snapped into the catch (322).

7. The tube assembly of claim 6,

the clamping groove (322) is arranged 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), and the buckle (312) is configured to swing along the radial direction of the first pipe fitting (31) so as to be clamped with or separated from the clamping groove (322); the limiting part is a sleeve ring (35) which is movably sleeved outside the first pipe element (31) or the second pipe element (32) along the axial direction of the first pipe element (31); or

The clamping groove (322) is an L-shaped groove formed in the pipe wall of the second pipe fitting (32), the L-shaped groove comprises an axial part and a radial part, the buckle (312) is a columnar part which is convexly arranged on the pipe wall of the first pipe fitting (31), and the columnar part can enter the axial part and move to the radial part to realize clamping when the first pipe fitting (31) and the second pipe fitting (32) are plugged; the limiting member is a lug (323) arranged in the radial part, and the lug (323) can releasably stop the column.

8. The pipe assembly of claim 4, wherein the connecting structure comprises a first boss (314) and a second boss (324) which are adapted, the first boss (314) being disposed on an inner wall surface or an outer wall surface of the first pipe (31), the second boss (324) being disposed on an outer wall surface or an inner wall surface of the second pipe (10), the first boss (314) and the second boss (324) being configured to be able to be snapped into or out of engagement by relative rotation of the first pipe (31) and the second pipe (32) with respect to each other.

9. The tube assembly of claim 4,

the connection structure comprises a first magnet and a second magnet of opposite poles, the first magnet being provided on one of the first pipe (31) and the second pipe (32), the second magnet being provided on the other of the first pipe (31) and the second pipe (32); or

The connection structure comprises a first thread and a second thread which are matched, the first thread is arranged on one of the first pipe fitting (31) and the second pipe fitting (32), and the second thread is arranged on the other of the first pipe fitting (31) and the second pipe fitting (32).

10. A respiratory mask, characterized in that it comprises a frame (211), a cushion (212) and a tube assembly according to any one of claims 1 to 9, said cushion (212) being mounted to said frame (211) and defining with said frame (211) a breathing chamber, said tube assembly being connected to said frame (211) by said second tube member (32) and communicating with said breathing chamber.

11. A ventilation therapy device, characterized in that it comprises a respiratory mask according to claim 10.