Patent Description:
The existing ventilation-treatment apparatus generally includes a mainframe for generating treatment gas, a patient-interface device, and a ventilation pipeline connecting a mainframe and the patient-interface device. The patient-interface device generally includes a breathing mask such as a nasal mask, an oral-nasal mask, a nasal pillow mask and a full-surface mask. A typical structure of the breathing mask includes a frame, a pad, a bent pipe and a head band. The pad is fixed to the frame and forms the respiratory cavity with the frame. One end of the bent pipe is connected to the ventilation pipeline, and the other end is connected to the frame to deliver the treatment gas from the mainframe into the respiratory cavity. The head band is connected to the head of the patient to fix the breathing mask to the head of the patient. In usage, the pad contacts the face of the patient and implements the sealing with the surface, and the mouth and/or the nose of the patient is put inside the respiratory cavity.

However, the above-described ventilation-treatment apparatuses has the following problems. In nighttime treatment, some unconscious actions can (such as turning over or rotating head) affect the reliability of the ventilation treatment when the patient is in sleep. In addition, when the patient requires to pause the treatment, he is required to shut down the mainframe, and take down the breathing mask or separate the ventilation pipeline and the mainframe, otherwise, the device will have a very large gas-leakage noise, which affects the rest of the company. When the patient requires to restart the treatment, he is required to wear the breathing mask or connect the ventilation pipeline to the mainframe and start up the mainframe, therefore, the overall comfort of the patient during treatment can be seriously affected due to such tedious operations in the process.

<CIT> discloses a connector comprising a main body with a breathing gases passageway extending therethrough and a flow restricting valve member, wherein at one end of the passageway can engage with a expiratory tube connection of a ventilator, and the flow restricting valve member is associated with the connection to the ventilator for substantially closing off the breathing gases passageway on disconnection of the connector from the ventilator.

<CIT> discloses a flow restriction device for a ventilator, comprising a restricted opening located at the downstream end of the restrictor device and apertures provided in the tubular part of the restrictor device that fits snugly in use inside the open end of the ET tube connector, wherein the apertures are closed or blocked by the inside wall of the ET tube connector and maintains a back pressure when connected; and the apertures are opened allowing the back pressure to fall to activate an alarm when disconnected.

<CIT> discloses a vent system for crap patient interface used in treatment of sleep disordered breathing, comprising a generally cylindrical first portion and a generally cylindrical sleeve portion rotatingly fits over an end of the first portion, wherein the first portion includes an orfice and the sleeve portion includes a series of vent hole set and alternative vent with larger holes, and the assembly can be configured such that a warning, e.g., a noise, can be created when the vent parts are misaligned.

<CIT> discloses a coupler for a breathing circuit for safe delivery of anesthesia gases comprising a body having an inner surface and an outer surface; and a valve that allows gas from the anesthetic gas delivery machine to flow to the breathing apparatus in an opened position and to block gas from flowing from the anesthetic gas delivery machine to the breathing apparatus in a closed position; and a plurality of slot and prong pair so that when the coupler is coupled to the mask or a portion of an airway device or breathing tube are connected to the distal region of the coupler, the slots are either fully covered by the mask to the outer surface or by the breathing tube from inner surface, and when the mask or airway device is removed, the slots are closed by the prongs. <CIT> discloses an anesthetic supply valve and an adapter for masks , wherein the valve fitting having a spring loaded poppet valve activated by a plunger which contacts and is displaced by the adapter on connection to the valve fitting whereby the poppet valve is open on connection to the adapter and closed on separation from the adapter, wherein a plurality of holes are provided on the plunger.

<CIT> discloses a mechanical user connection unit that selects an oxygen flow path within oxygen concentrator, comprising a user connection switch and a proprietary connector, wherein a valve of a flow path selector of the user connector switch remains open when the proprietary connector is connected to the user connection switch, and the flow path selector returns to the right-hand mechanical limit and valves close when the proprietary connector is removed and thereby terminating the flow of high pressure oxygen.

<CIT> discloses an anti-asphyxia valve assembly, comprising a first housing, a diaphragm member having a plurality of individually pivotable sealing members, and a second housing coupled to the end of the first housing over the diaphragm member, and the second housing having a plurality of ports spaced about the second member, wherein the operation state and the closing state of the valve are triggered by the pressure threshold of the gas flow generated by the pressure generating device.

<CIT> discloses discloses an elbow assembly, wherein the first and second ends of the elbow component are coupled to one another and structured to house a dual flap, anti-asphyxia valve (AAV) assembly including a pair of AAVs, wherein the first end includes a pair of ports that may be selectively opened or closed by respective flap portion under alternative conditions. <CIT> discloses an elbow of a breathing mask, comprising an inlet end and an outlet end, and a main body having a rear wall arranged close to a wearer and a front wall arranged away from the wearer, an exhaust structure arranged on the front wall, and an anti-suffocation structure including a safety valve plate and safety valve hole arranged on the front wall and rear wall of the bent pipe body, wherein the valve plate can open or close resulting in the closing or opening of the safety valve hole when the wearer exhales or inhales.

The present invention provides a tube assembly for a ventilation treatment apparatus as defined in claim <NUM>.

The purpose of the present disclosure is to provide a ventilation treatment device and a ventilation treatment method to solve the above-mentioned problems.

In order to achieve the above objective, an aspect of the present disclosure provides a ventilation-treatment apparatus, wherein the ventilation-treatment apparatus includes:.

Optionally, the first valve assembly includes a first valve body, and the first valve body penetrates the first gas hole and is capable of moving reciprocatingly relative to the first gas hole and in an axial direction of the first gas hole, to move between a first opening position of opening the first gas hole and a first closing position of closing the first gas hole;.

Optionally, the first valve assembly includes a first electrical driving member, and the first electrical driving member is configured to be capable of, when the first valve body and the second valve body contact, controlling the first valve body to move to the first opening position, and, when the first valve body and the second valve body are separated, controlling the first valve body to move to the first closing position; and
the second valve assembly includes a second electrical driving member, and the second electrical driving member is configured to be capable of, when the second valve body and the first valve body contact, controlling the second valve body to move to the second opening position, and, when the second valve body and the first valve body are separated, controlling the second valve body to move to the second closing position.

Optionally, the first valve assembly includes a first elastic member, and the first elastic member is configured to be capable of, being compressed to allow the first valve body to move to the first opening position when the first valve body is under a pressure, and, being restored to drive the first valve body to move to the first closing position when the first valve body is released from the pressure; and the second valve assembly comprises a second elastic member, and the second elastic member is configured to be capable of being compressed to allow the second valve body to move to the second opening position when the second valve body is under a pressure, and, being restored to drive the second valve body to move to the second closing position when the second valve is released from the pressure.

Optionally, the first valve body includes a first penetrating part, and a first covering part and a first stopping part that are connected to two ends of the first penetrating part, respectively, the first penetrating part penetrates the first gas hole and forms a radial gap with the first gas hole, the first covering part and the first stopping part are located at an inner side and an outer side of the first gas hole, respectively, the first covering part is configured for covering and opening the radial gap, the first elastic member is a compression spring nested to the first penetrating part, and the first elastic member is connected between the first stopping part and a periphery of the first gas hole; and
the second valve body includes a second penetrating part, and a second covering part and a second stopping part that are connected to two ends of the second penetrating part, the second penetrating part penetrates the second gas hole and forms a radial gap with the second gas hole, the second covering part and the second stopping part are located at an inner side and an outer side of the second gas hole respectively, the second covering part is configured for covering and opening the radial gap, the second elastic member is a compression spring nested to the second penetrating part, and the second elastic member is connected between the second stopping part and a periphery of the second gas hole.

Optionally, the ventilation-treatment apparatus includes a guiding member configured for guiding the contacting between the first valve assembly and the second valve assembly; and/or
the ventilation-treatment apparatus includes a sealing member, and the sealing member is for, when the first valve assembly and the second valve assembly contact, sealing the communication between the first gas hole and the second gas hole.

Optionally, the guiding member includes a first magnet disposed at a periphery of the first gas hole and a second magnet disposed at a periphery of the second gas hole, and magnetic poles of the first magnet and magnetic poles of the second magnet are set oppositely and correspondingly.

Optionally, the headrest is disposed with a protrusion, a slot is disposed at a top of the protrusion, the first gas hole is disposed in the slot, the first magnet extends in a circumferential direction of a slot opening of the slot, the second magnet extends in the periphery of the second gas hole, and the slot opening of the slot is sealable with the head band by attraction between the first magnet and the second magnet; or
the head band is disposed with a protrusion, a slot is disposed at a top of the protrusion, the second gas hole is disposed in the slot, the second magnet extends in a circumferential direction of a slot opening of the slot, the first magnet extends in the periphery of the first gas hole, and the slot opening of the slot is sealable with the headrest by attraction between the first magnet and the second magnet.

Optionally, the guiding member includes a protrusion and a depression that match, the protrusion is disposed at one of the headrest and the head band, the depression is disposed at the other of the headrest and the head band, the first gas hole is disposed at one of the protrusion and the depression, and the second gas hole is disposed at the other of the protrusion and the depression.

Optionally, the sealing member is a sealing ring, and the sealing ring is nested outside the protrusion or inside the depression, to seal the radial gap between the protrusion and the depression when the protrusion is embedded inside the depression.

Optionally, the headrest is disposed with the plurality of first gas holes, the head band is disposed with the plurality of second gas holes, and when the head band and the headrest contact, and a part of the second gas holes are capable of being selectively in communication with a part of the first gas holes one to one correspondingly; and/or
the ventilation-treatment apparatus includes a tube assembly, and the tube assembly is connected to the main body to communicate the respiratory cavity with the gas source.

Optionally, the tube assembly includes a first tube piece and a second tube piece, the tube assembly is provided with a connecting state in which the first tube piece and the second tube piece are coaxially plug-connected and a separating state in which the first tube piece and the second tube piece are separate from each other, and the first tube piece has an inlet end for connecting the gas source and an outlet end for connecting the second tube piece;.

Another aspect of the present disclosure provides a ventilation-control method, wherein the method is performed by using the ventilation-treatment apparatus stated above, the ventilation-treatment apparatus further includes a mainframe serving as the gas source, and the method includes the following steps:.

Another aspect of the present disclosure provides a tube assembly for a ventilation treatment apparatus, wherein the tube assembly is for being connected to a main body of a patient interface device to communicate with a respiratory cavity of the patient interface device with a gas source, wherein the tube assembly includes a first tube piece and a second tube piece, the tube assembly is provided with a connecting state in which the first tube piece and the second tube piece are coaxially plug-connected and a separating state in which the first tube piece and the second tube piece are separated from each other,.

In the tube assembly according to the present disclosure, by using the above technical solutions, when the first tube piece and the second tube piece are plug-connected to each other, the valve member opens the outlet end of the first tube piece to allow the gas to flow from the first tube piece to the second tube piece, and the discharging hole is closed to prevent the gas from flowing out of the discharging hole at the same time, whereby the gas may merely flow from the first tube piece to the second tube piece. When the first tube piece and the second tube piece are separate from each other, the valve member closes the outlet end of the first tube piece to prevent the gas from flowing out of the outlet end, and simultaneously the discharging hole is opened to make the gas to be discharged from the discharging hole to the external at a lower flow rate. Accordingly, the tube assembly according to the present disclosure cannot only ensure the effective flowing of the gas, but also, when the first tube piece and the second tube piece are separate from each other, may enable the gas to be discharged to the external at a lower flow rate, thereby preventing the generation of gas-leakage noise.

The other characteristics and advantages of the present disclosure will be described in detail in the subsequent section of DETAILED DESCRIPTION OF THE EMBODIMENTS.

The above description is merely a summary of the technical solutions of the present disclosure. In order to more clearly know the elements of the present disclosure to enable the implementation according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present disclosure more apparent and understandable, the particular embodiments of the present disclosure are disposed below.

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the figures that are required to describe the embodiments or the prior art will be briefly introduced below. Apparently, the figures that are described below are embodiments of the present disclosure, and a person skilled in the art can obtain other figures according to these figures without paying creative work.

The drawings are intended to provide a further understanding of the present disclosure, and constitute part of the description. The drawings are intended to interpret the present disclosure together with the following particular embodiments, and do not function to limit the present disclosure. In the drawings:.

The particular embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the particular embodiments described herein are merely intended to describe and interpret the present disclosure, and are not intended to limit the present disclosure.

In the present disclosure, unless stated otherwise, the used words of orientation, such as "upper", "lower", "top" and "bottom", generally refer to the orientations shown in <FIG>, and "inner" and "outer" refer to the interior and the exterior with respect to the contours of the components themselves.

An aspect of the present disclosure provides a ventilation-treatment apparatus, wherein the ventilation-treatment apparatus includes:.

By using the above technical solution, when the ventilation-treatment apparatus according to the present disclosure is being used, when the head band <NUM> and the headrest <NUM> contact, the first valve assembly and the second valve assembly contact to open the first gas hole <NUM> and the second gas hole <NUM>, thereby communicating the first chamber <NUM> with the second chamber <NUM>, whereby the gas entering the first chamber <NUM> from the gas source may enter the second chamber <NUM> and further enter the respiratory cavity of the patient-interface device <NUM> for the patient to inhale. When the head band <NUM> and the headrest <NUM> are separated, the first valve assembly and the second valve assembly are separated to close the first gas hole <NUM> and the second gas hole <NUM>, thereby preventing the gas inside the first chamber <NUM> and the second chamber <NUM> from flowing out via the first gas hole <NUM> and the second gas hole <NUM>, respectively. Therefore, the operations on the mainframe, the patient-interface device and the ventilation pipeline when the treatment is paused may be omitted, to implement simple operation and anytime usage which can improve the reliability of the ventilation treatment and the comfort of the patient in the treatment process.

In the above description, the first valve assembly and the second valve assembly may be any structure that may implement the function of opening and closing the gas holes.

According to an embodiment of the present disclosure, the first valve assembly may include a first valve body <NUM>, and the first valve body <NUM> penetrates the first gas hole <NUM> and is capable of moving reciprocatingly relative to the first gas hole (<NUM>) and in an axial direction of the first gas hole (<NUM>), to move between a first opening position of opening the first gas hole (<NUM>) and a first closing position of closing the first gas hole (<NUM>); and the second valve assembly may include a second valve body <NUM>, and the second valve body <NUM> penetrates the second gas hole <NUM> and is capable of moving reciprocatingly relative to the second gas hole (<NUM>) and in an axial direction of the second gas hole (<NUM>), to move between a second opening position of opening the second gas hole (<NUM>) and a second closing position of closing the second gas hole (<NUM>). When the first valve body <NUM> and the second valve body <NUM> contact, the first valve body <NUM> and the second valve body <NUM> move to the first opening position and the second opening position, respectively; and when the first valve body <NUM> and the second valve body <NUM> are separated, the first valve body <NUM> and the second valve body <NUM> move to the first closing position and the second closing position, respectively.

In the above description, the movement of the first valve body <NUM> and the second valve body <NUM> may adopt pressure driving, electric driving or any other suitable manner.

Particularly, according to an embodiment of the present disclosure, the first valve assembly may include a first electrical driving member, and the first electrical driving member is configured to be capable of, when the first valve body <NUM> and the second valve body <NUM> contact, controlling the first valve body <NUM> to move to the first opening position, and, when the first valve body <NUM> and the second valve body <NUM> are separated, controlling the first valve body <NUM> to move to the first closing position; and the second valve assembly may include a second electrical driving member, and the second electrical driving member is configured to be capable of, when the second valve body <NUM> and the first valve body <NUM> contact, controlling the second valve body <NUM> to move to the second opening position, and, when the second valve body <NUM> and the first valve body <NUM> are separated, controlling the second valve body <NUM> to move to the second closing position. In other words, in the present embodiment, the movement of the first valve body <NUM> and the second valve body <NUM> is electrically driven, and the first valve body <NUM> and the second valve body <NUM> may be electrically operated valves.

According to another embodiment of the present disclosure, the headrest <NUM> and the head band <NUM> may be made to squeeze when contacting each other (for example, by the effect of the weight of the head of the patient), whereby the movement of the first valve body <NUM> and the second valve body <NUM> is implemented by the effect of the mutual squeezing. In other words, in the present embodiment, the movement of the first valve body <NUM> and the second valve body <NUM> is pressure-driven. The first valve assembly may include a first elastic member <NUM>, and the first valve assembly comprises a first elastic member (<NUM>), and the first elastic member (<NUM>) is configured to be capable of, being compressed to allow the first valve body (<NUM>) to move to the first opening position when the first valve body is under a pressure, and, being restored to drive the first valve body (<NUM>) to move to the first closing position when the first valve body (<NUM>) is released from the pressure; and the second valve assembly comprises a second elastic member (<NUM>), and the second elastic member (<NUM>) is configured to be capable of being compressed to allow the second valve body (<NUM>) to move to the second opening position when the second valve body (<NUM>) is under a pressure, and, being restored to drive the second valve body (<NUM>) to move to the second closing position when the second valve is released from the pressure.

In the present disclosure, the first valve body <NUM> and the second valve body <NUM> may have any suitable structures. According to an embodiment of the present disclosure, as shown in <FIG>, the first valve body <NUM> includes a first penetrating part <NUM>, and a first covering part <NUM> and a first stopping part <NUM> that are connected to the two ends of the first penetrating part <NUM>, the first penetrating part <NUM> penetrates the first gas hole <NUM> and forms a radial gap with the first gas hole <NUM>, the first covering part <NUM> and the first stopping part <NUM> are located at the inner side and the outer side of the first gas hole <NUM>, respectively, the first covering part <NUM> is for covering and opening the radial gap, the first stopping part <NUM> is for preventing the first valve body <NUM> from disengaging the first gas hole <NUM>, the second valve body <NUM> includes a second penetrating part <NUM>, and a second covering part <NUM> and a second stopping part <NUM> that are connected to the two ends of the second penetrating part <NUM>, the second penetrating part <NUM> penetrates the second gas hole <NUM> and forms a radial gap with the second gas hole <NUM>, the second covering part <NUM> and the second stopping part <NUM> are located at the inner side and the outer side of the second gas hole <NUM>, respectively, the second covering part <NUM> is for covering and opening the radial gap, and the second stopping part <NUM> is for preventing the second valve body <NUM> from disengaging the second gas hole <NUM>.

In the above embodiment, the first elastic member <NUM> may be a compression spring nested to the first penetrating part <NUM>, and the first elastic member <NUM> may be connected between the first stopping part <NUM> and the periphery of the first gas hole <NUM>. The first elastic member <NUM> may also be configured that one end is connected to the first penetrating part <NUM>, and the other end is connected to the periphery of the first gas hole <NUM> (as shown in <FIG>), in which case the first valve body <NUM> may include merely the first penetrating part <NUM> and the first covering part <NUM> (as shown in <FIG>). The second elastic member <NUM> may be a compression spring nested to the second penetrating part <NUM>, and the second elastic member <NUM> may be connected between the second stopping part <NUM> and the periphery of the second gas hole <NUM>. The second elastic member <NUM> may also be configured that one end is connected to the second penetrating part <NUM>, and the other end is connected to the periphery of the second gas hole <NUM> (as shown in <FIG>), in which case the second valve body <NUM> may include merely the second penetrating part <NUM> and the second covering part <NUM> (as shown in <FIG>).

In usage, when the first valve body <NUM> and the second valve body <NUM> are contacting and squeezing each other, as shown in <FIG>, the first valve body <NUM> is applied an upward force and thus moves upwardly relatively to the first gas hole <NUM>, whereby the first covering part <NUM> gets further away from the first gas hole <NUM> and thus opens the radial gap between the first penetrating part <NUM> and the first gas hole <NUM>, and the first elastic member <NUM> is further compressed; and the second valve body <NUM> is applied a downward force and thus moves downwardly relatively to the second gas hole <NUM>, whereby the second covering part <NUM> gets further away from the second gas hole <NUM> and thus opens the radial gap between the second penetrating part <NUM> and the second gas hole <NUM>, and the second elastic member <NUM> is further compressed. In this case, as shown by the arrow in <FIG>, the gas inside the first chamber <NUM> may enter the second chamber <NUM> via the two radial gaps. Certainly, the gas inside the second chamber <NUM> may enter the first chamber <NUM> via the two radial gaps. When the first valve body <NUM> and the second valve body <NUM> are separated from each other, as shown in <FIG>, the first valve body <NUM> moves downwardly relatively to the first gas hole <NUM> by the effect of the restoration of the first elastic member <NUM>, whereby the first covering part <NUM> gets closer to the first gas hole <NUM> and thus covers the radial gap between the first penetrating part <NUM> and the first gas hole <NUM>; and the second valve body <NUM> moves upwardly relatively to the second gas hole <NUM> by the effect of the restoration of the second elastic member <NUM>, whereby the second covering part <NUM> gets closer to the second gas hole <NUM> and thus covers the radial gap between the second penetrating part <NUM> and the second gas hole <NUM>.

In the present disclosure, the ventilation-treatment apparatus may further include a guiding member for guiding the contacting between the first valve assembly and the second valve assembly.

According to an embodiment of the guiding member according to the present disclosure, the guiding member may include a first magnet <NUM> disposed at the periphery of the first gas hole <NUM> and a second magnet <NUM> disposed at the periphery of the second gas hole <NUM>, and the magnetic poles of the first magnet <NUM> and the magnetic poles of the second magnet <NUM> are set oppositely and correspondingly. When the headrest <NUM> and the head band <NUM> contact, the first magnet <NUM> may attract the second magnet <NUM>, whereby the first valve assembly and the second valve assembly are aligned and contacted. In addition, the first magnet <NUM> and the second magnet <NUM> that are attracted together may seal the communication between the first gas hole <NUM> and the second gas hole <NUM>. It should be noted that the first magnet <NUM> may be disposed at the inner side or the outer side of the periphery of the first gas hole <NUM>, and the second magnet <NUM> may be disposed at the inner side or the outer side of the periphery of the second gas hole <NUM>. Preferably, as shown in <FIG>, the first magnet <NUM> is disposed on the inner side of the periphery of the first gas hole <NUM>, and the second magnet <NUM> is disposed on the inner side of the periphery of the second gas hole <NUM>, which may prevent damaging or falling of the first magnet <NUM> and the second magnet <NUM> after long-term usage of and friction between the headrest <NUM> and the head band <NUM>.

Optionally, as shown in <FIG>, the head band <NUM> may be disposed with a protrusion <NUM>, a slot <NUM> is disposed at the top of the protrusion <NUM>, the second gas hole <NUM> is disposed in the slot <NUM>, the second magnet <NUM> extends in the circumferential direction of the slot opening of the slot <NUM>, the first magnet <NUM> extends in the periphery of the first gas hole <NUM>, and the slot opening of the slot <NUM> is sealable with the headrest <NUM> by the attraction between the first magnet <NUM> and the second magnet <NUM>. Such a configuration may further improve the leak proofness of the communication between the first gas hole <NUM> and the second gas hole <NUM>. In addition, it may be understood that, in another embodiment, the protrusion <NUM> may also be disposed at the headrest <NUM>. In this case, the first magnet <NUM> extends in the circumferential direction of the slot opening of the slot <NUM>, the second magnet <NUM> extends in the periphery of the second gas hole <NUM>, and the slot opening of the slot <NUM> is sealable with the head band <NUM> by the attraction between the first magnet <NUM> and the second magnet <NUM>.

In the above embodiment, the first electrical driving member and the second electrical driving member may be configured for, when the first magnet <NUM> and the second magnet <NUM> are attracting, controlling the first valve body <NUM> and the second valve body <NUM> to move to the opening position, and, when the first magnet <NUM> and the second magnet <NUM> are separated, controlling the first valve body <NUM> and the second valve body <NUM> to move to the closing position.

According to another embodiment of the guiding member according to the present disclosure, as shown in <FIG>, the guiding member may include a protrusion <NUM> and a depression <NUM> that match, the protrusion <NUM> is disposed at one of the headrest <NUM> and the head band <NUM>, the depression <NUM> is disposed at the other of the headrest <NUM> and the head band <NUM>, the first gas hole <NUM> is disposed at one of the protrusion <NUM> and the depression <NUM>, and the second gas hole <NUM> is disposed at the other of the protrusion <NUM> and the depression <NUM>. It should be noted that a slot <NUM> may be disposed at the top of the protrusion <NUM>, and the first gas hole <NUM> or the second gas hole <NUM> is disposed in the slot <NUM>. When the headrest <NUM> and the head band <NUM> contact, the protrusion <NUM> may be embedded into the depression <NUM>, whereby the first valve assembly and the second valve assembly are aligned and contacted. In addition, the protrusion <NUM> and the depression <NUM> that are embedded into each other may further improve the leak proofness of the communication between the first gas hole <NUM> and the second gas hole <NUM>. Certainly, the first magnet <NUM> and the second magnet <NUM> may also be further disposed at the protrusion <NUM> and the depression <NUM>, respectively.

In the present disclosure, in order to ensure the leak proofness of the communication between the first gas hole <NUM> and the second gas hole <NUM>, the ventilation-treatment apparatus may include a sealing member, and the sealing member is for, when the first valve assembly and the second valve assembly contact, sealing the communication between the first gas hole <NUM> and the second gas hole <NUM>. Particularly, in the embodiment shown in <FIG>, the sealing member may be formed by the first magnet <NUM> and the second magnet <NUM>, the sealing member may also be formed by a sealing ring that is nested outside the protrusion <NUM> and extends beyond the upper end surface of the protrusion <NUM>, and when the first valve assembly and the second valve assembly contact, the sealing ring may contact and squeeze the periphery of the first gas hole <NUM> to implement the sealing. In the embodiment shown in <FIG> and <FIG>, the sealing member may be a sealing ring <NUM>, and the sealing ring <NUM> is nested outside the protrusion <NUM> or inside the depression <NUM>, to, when the protrusion <NUM> is embedded inside the depression <NUM>, seal the radial gap between the protrusion <NUM> and the depression <NUM>. The sealing ring <NUM> may be a silica-gel piece, and when the protrusion <NUM> is embedded inside the depression <NUM>, the sealing ring <NUM> is properly squeezed to implement the sealing. In addition, in the structure of the sealing ring shown in <FIG>, the sealing ring <NUM> may serve to guide the protrusion <NUM> to be embedded into the depression <NUM>.

In the above embodiment, the mode of the electric driving of the movement of the first valve body <NUM> and the second valve body <NUM> may include: when the protrusion <NUM> is embedded inside the depression <NUM>, forming an electrifying loop or triggering a contact switch, and in turn controlling the first valve body <NUM> and the second valve body <NUM> to move to the opening position; and when the protrusion <NUM> is separated from the depression <NUM>, disconnecting the electrifying loop or triggering a contact switch, and in turn controlling the first valve body <NUM> and the second valve body <NUM> to move to the closing position.

In the present disclosure, the headrest <NUM> may be disposed with a plurality of first gas holes <NUM>, the head band <NUM> may be disposed with a plurality of second gas holes <NUM>, and when the head band <NUM> and the headrest <NUM> contact, and a part of the second gas holes <NUM> are capable of being selectively in communication with a part of the first gas holes <NUM> one to one correspondingly. In other words, no matter whether the headrest <NUM> and the head band <NUM> locally contact or totally contact, as long as they contact, the first gas hole <NUM> and the second gas hole <NUM> at the correspondingly contacting parts may be in communication with each other to make the gas inside the headrest <NUM> to enter the head band <NUM>, while the first gas hole <NUM> and the second gas hole <NUM> at the no-contacting area are closed, whereby no gas leakage happens. Accordingly, the ventilation-treatment apparatus according to the present disclosure, in the process of nighttime treatment, no matter whether the patient turns the body, turns the head or performs another action, may perform the ventilation treatment as long as the head band <NUM> contacts the headrest <NUM>, which may effectively ensure the reliability of the ventilation treatment, and improve the flexibility of the usage of the ventilation-treatment apparatus.

In the present disclosure, the patient-interface device <NUM> may be a breathing mask such as a nasal mask, an oral-nasal mask, a nasal pillow mask and a full-surface mask. For example, as shown in <FIG> and <FIG>, the main body <NUM> of the patient-interface device <NUM> may include a frame <NUM> and a pad <NUM>, the pad <NUM> is mounted to the frame <NUM> and defines the respiratory cavity with the frame <NUM>, and the head band <NUM> is connected to the frame <NUM>. The head band <NUM> may include a main head-band body and a connecting band for connecting the main head-band body to the frame <NUM>, the main head-band body may cover the afterbrain and the two lateral sides of the head of the patient, the second chamber <NUM> is defined by the main head-band body, and the connecting band defines a communicating cavity for communicating the second chamber <NUM> and the respiratory cavity. As shown in <FIG>, the frame <NUM> may be disposed with a connecting opening <NUM> for the connecting band to connect and communicate the respiratory cavity and the communicating cavity.

Optionally, the connecting band may include an upper side band <NUM> and a lower side band <NUM>, both of the upper side band <NUM> and the lower side band <NUM> may be connected to the frame <NUM> (as shown in <FIG>), and at least one of the upper side band <NUM> and the lower side band <NUM> has the communicating cavity.

In addition, in the embodiment shown in <FIG>, the main body <NUM> may also include a forehead support <NUM> connected to the frame <NUM>, the upper side band <NUM> is connected to the forehead support <NUM>, and the lower side band <NUM> is connected to the frame <NUM>. In this case, if the communicating cavity is to be disposed at the upper side band <NUM>, the forehead support <NUM> may be disposed with a hollow structure that communicates the communicating cavity with the respiratory cavity.

In the present disclosure, in order to prevent the headrest <NUM> and the head band <NUM> from being crushed to block the gas flowing, a honeycomb component or another supporting component may be disposed inside the headrest <NUM> and the head band <NUM>. That also facilitates improving the comfort of the head.

In the present disclosure, as shown in <FIG>, the ventilation-treatment apparatus may further include a mainframe <NUM> serving as the gas source and a ventilation pipeline <NUM> for communicating the mainframe <NUM> with the headrest <NUM>.

In addition, as shown in <FIG>, the ventilation-treatment apparatus may further include a tube assembly <NUM>, and the tube assembly <NUM> is connected to the main body <NUM> to communicate the respiratory cavity with the gas source. Particularly, one end of the tube assembly <NUM> may be connected to the frame <NUM>, and the other end may be connected to the ventilation pipeline <NUM>. In this case, the ventilation-treatment apparatus may adopt two modes of the ventilation, wherein one is to ventilate by using the headrest <NUM> and the head band <NUM>, and the other is to ventilate by using the tube assembly <NUM>. In usage, a suitable ventilation mode may be selected according to actual situations. It should be noted that, when the ventilation by using the headrest <NUM> and the head band <NUM> is adopted, the tube assembly <NUM> and the ventilation pipeline <NUM> may be disconnected, and the tube assembly <NUM> may be blocked by using a plug. Certainly, optionally, the tube assembly <NUM> may also be taken down from the frame <NUM>, and the opening for connecting the tube assembly <NUM> on the frame <NUM> is blocked by using a plug. When the ventilation by using the tube assembly <NUM> is adopted, optionally, the first valve assembly is disposed at one of the tube assembly <NUM> and the ventilation pipeline <NUM>, and the second valve assembly is disposed at the other of the tube assembly <NUM> and the ventilation pipeline <NUM>. In usage, when the tube assembly <NUM> and the ventilation pipeline <NUM> are connected, the first gas hole <NUM> and the second gas hole <NUM> are opened, and when the tube assembly <NUM> and the ventilation pipeline <NUM> are disconnected, the first gas hole <NUM> and the second gas hole <NUM> are closed.

In the usage of current ventilation-treatment apparatuses, when the patient intends to pause the treatment and thus directly disengages the breathing mask from the ventilation pipeline, because the mainframe is still in the operating state, that results in a large gas-leakage noise at the port of the ventilation pipeline, and a device alarming might be triggered because of a too large gas-leakage amount. In order to solve the above problems, the present disclosure provides a novel tube assembly <NUM>. The tube assembly <NUM> may include a first tube piece <NUM> and a second tube piece <NUM>, the tube assembly <NUM> has a connecting state in which the first tube piece <NUM> and the second tube piece <NUM> are coaxially plug-connected and a separating state in which the first tube piece <NUM> and the second tube piece <NUM> are separate from each other, and the first tube piece <NUM> has an inlet end for connecting the gas source and an outlet end for connecting the second tube piece <NUM>; the first tube piece <NUM> has a discharging hole <NUM>, and the discharging hole <NUM> is configured so that, in the connecting state, the discharging hole <NUM> is closed to make the gas from the gas source to enter the second tube piece <NUM>, and in the separating state, the discharging hole <NUM> is opened to make the gas from the gas source to be discharged from the discharging hole <NUM> to the external; and the tube assembly <NUM> further includes a valve member, and the valve member is configured so that, in the connecting state, the valve member opens the outlet end of the first tube piece <NUM> to make the gas from the gas source to enter the second tube piece <NUM>, and in the separating state, the valve member closes the outlet end to make the gas from the gas source to be discharged from the discharging hole <NUM> to the external.

In the above description, it should be noted that the hole area of the discharging hole <NUM> is less than the area of the outlet end of the first tube piece <NUM>; in other words, the ventilation capacity of the discharging hole <NUM> is less than the ventilation capacity of the outlet end. In usage, by configuring the hole diameter and the quantity of the discharging hole <NUM>, the flow rate of the gas discharged from the discharging hole <NUM> may be controlled, whereby, when the first tube piece <NUM> and the second tube piece <NUM> are separate from each other, the gas cannot flow out of the outlet end of the first tube piece <NUM>, and may merely flow out of the discharging hole <NUM> at a desired lower flow rate.

In usage, when the patient intends to pause the treatment (for example, getting up and going to the bathroom), it is merely required to separate the first tube piece <NUM> and the second tube piece <NUM>. At this point, the outlet end of the first tube piece <NUM> is closed, the discharging hole <NUM> is opened, the first tube piece <NUM> discharges the gas at a controllable flow rate, and the ventilation-treatment apparatus may operate normally and does not make an alarm due to gas leakage or pipeline falling, whereby the bed partner is not disturbed. Furthermore, the ventilation-treatment apparatus may be used and stopped at any time, and does not influence other actions of the patient, with easy and convenient operation and usage, and good safety and sanitary.

In the tube assembly <NUM> according to the present disclosure, by using the above technical solutions, when the first tube piece <NUM> and the second tube piece <NUM> are plug-connected to each other, the valve member opens the outlet end of the first tube piece <NUM> to allow the gas to flow from the first tube piece <NUM> to the second tube piece <NUM>, and the discharging hole <NUM> is closed to prevent the gas from flowing out of the discharging hole <NUM> at the same time, whereby the gas may merely flow from the first tube piece <NUM> to the second tube piece <NUM>. When the first tube piece <NUM> and the second tube piece <NUM> are separate from each other, the valve member closes the outlet end of the first tube piece <NUM> to prevent the gas from flowing out of the outlet end, and simultaneously the discharging hole <NUM> is opened to make the gas to be discharged from the discharging hole <NUM> to the external at a lower flow rate. Accordingly, the tube assembly according to the present disclosure cannot only ensure the effective flowing of the gas, but also, when the first tube piece <NUM> and the second tube piece <NUM> are separate from each other, may enable the gas to be discharged to the external at a lower flow rate, thereby preventing the generation of gas-leakage noise.

In other words, in the above modes, both of the opening and closing of the discharging hole <NUM> and the opening and closing of the outlet end of the first tube piece <NUM> are implemented by using the valve plate <NUM>. Certainly, according to the different positions of the discharging hole <NUM> in the tube wall of the first tube piece <NUM>, the valve plate <NUM> may also cooperate with the second tube piece <NUM> to implement the function of the valve member. As shown in <FIG>, the valve plate <NUM> is connected to the top of the tube wall of the first tube piece <NUM>, and the discharging hole <NUM> is disposed at the bottom of the tube wall of the first tube piece <NUM>. In this case, when the second tube piece <NUM> is inserted into the first tube piece <NUM>, the second tube piece <NUM> pushes the valve plate <NUM> to the first position to open the outlet end of the first tube piece <NUM>, and simultaneously the tube wall of the second tube piece <NUM> blocks the discharging hole <NUM>. It should be noted that, after the second tube piece <NUM> has been inserted into the first tube piece <NUM>, the outer wall surface of the second tube piece <NUM> is closely adhered to the side surface of the valve plate <NUM> and the inner wall surface of the first tube piece <NUM>, to prevent gas leakage.

According to another embodiment of the valve member according to the present disclosure, as shown in <FIG>, the valve member includes a valve core <NUM> that is movably disposed inside the first tube piece <NUM> in the axial direction of the first tube piece <NUM>, the discharging hole <NUM> is disposed in the tube wall of the first tube piece <NUM>, and the second tube piece <NUM> is disposed with a gas flowing channel <NUM>. The tube assembly <NUM> is configured so that, in the connecting state, the valve core <NUM> moves to the upstream position of the discharging hole <NUM> in the direction of the gas flowing (i.e., the direction from the first tube piece <NUM> to the second tube piece <NUM>), the part of the second tube piece <NUM> that protrudes into the first tube piece <NUM> forms, together with the valve core <NUM>, the valve member to close the discharging hole <NUM>, and the first tube piece <NUM> communicates with the second tube piece <NUM> via the gas flowing channel <NUM> (referring to <FIG>); and in the separating state, the valve core <NUM> moves to the downstream position of the discharging hole <NUM> in the direction of the gas flowing to close the outlet end of the first tube piece <NUM> (referring to <FIG> and <FIG>).

In the above description, the valve core <NUM> may be any component that is capable of moving inside the first tube piece <NUM> and capable of blocking the outlet end of the first tube piece <NUM>; for example, the valve core <NUM> may be a cylindrical body or a spherical body. In usage, for example, as shown in <FIG> and <FIG>, when the second tube piece <NUM> is inserted into the first tube piece <NUM>, the second tube piece <NUM> may push the valve core <NUM>, which is originally located at the second position (referring to <FIG>), to move rightwardly to the first position (referring to <FIG>), at which point the discharging hole <NUM> is covered by the tube wall of the second tube piece <NUM> and thus closed, and the gas inside the first tube piece <NUM> enters the second tube piece <NUM> via the gap between the valve core <NUM> and the inner wall surface of the first tube piece <NUM> and the gas flowing channel <NUM>. When the second tube piece <NUM> and the first tube piece <NUM> are separate, the valve core <NUM> moves, by the effect of the mobilization force of the gas, from the first position back to the second position, thereby blocking the outlet end, to make the gas to be discharged via the discharging hole <NUM>.

It may be understood that, in order to enable the valve core <NUM> to block the outlet end at the second position and generate the gap with the inner wall surface of the first tube piece <NUM> when the valve core <NUM> moves to the first position, while the first tube piece <NUM> is configured to be of a non-constant-diameter structure, as shown in <FIG>.

In order to prevent the valve core <NUM> from, in the first position, continuing to move rightwardly or turning over, to affect the usage of the valve core <NUM> or even make failure of the device, the valve member may further include a valve-core stopper <NUM> disposed inside the first tube piece <NUM>, and the valve-core stopper <NUM> is configured so that it may limit the valve core <NUM>. Particularly, for example, as shown in <FIG>, the valve-core stopper <NUM> may be an annular boss disposed on the inner wall of the first tube piece <NUM>, and when the valve core <NUM> is in the first position, the right side surface of the valve core <NUM> is capable of abutting the left side surface of the annular boss, whereby the valve core <NUM> cannot continue to move rightwardly, and cannot turn over. Certainly, the right side surface of the valve core <NUM> may also have a gap with the left side surface of the annular boss, wherein the gap is less than the axial length of the valve core <NUM>, which may prevent turning-over of the valve core <NUM> in the horizontal direction (i.e., left-right turning-over). Optionally, the gap between the right side surface of the valve core <NUM> and the left side surface of the annular boss is preferably set to be less than the maximum diameter of the valve core <NUM>, which may prevent turning-over of the valve core <NUM> in the vertical direction (i.e., up-down turning-over). In addition, for example, as shown in <FIG>, the valve core <NUM> may also be made to be more stable itself in structure. As compared with the valve core <NUM> in <FIG>, the center of gravity of the valve core <NUM> in <FIG> is deviated to right, which may improve the stability of the valve core <NUM> in the first position. Optionally, referring to <FIG>, the magnitude of a may be between one third and two thirds of c, or a<NUM>+b<NUM>=c<NUM>, which may prevent turning-over of the valve core <NUM>. Certainly, the present disclosure is not limited thereto, and the valve-core stopper <NUM> may be any component or structure that may limit the valve core <NUM> as described above.

In the present disclosure, when the tube assembly <NUM> is in the connecting state, the first tube piece <NUM> and the second tube piece <NUM> may be configured to be capable of rotating relatively to each other, and may also be configured to be not capable of rotating. In addition, the tube assembly <NUM> may further include a connecting structure for connecting the first tube piece <NUM> and the second tube piece <NUM>, and the connecting structure is configured to be capable of preventing the first tube piece <NUM> and the second tube piece <NUM> from separating from each other in the connecting state. That may prevent the first tube piece <NUM> and the second tube piece <NUM> from being separated accidentally to affect the gas flowing.

According to an embodiment of the connecting structure according to the present disclosure, the connecting structure includes a clip <NUM> and a clipping slot <NUM> that match, the clip <NUM> is disposed at one of the first tube piece <NUM> and the second tube piece <NUM>, and the clipping slot <NUM> is disposed at the other of the first tube piece <NUM> and the second tube piece <NUM>.

In the above embodiment, the clip <NUM> and the clipping slot <NUM> may be configured in various modes. For example, as shown in <FIG> and <FIG>, the clip <NUM> may be disposed on the outer wall surface of the second tube piece <NUM>, and the clipping slot <NUM> may be disposed on the inner wall surface of the first tube piece <NUM>, wherein when it is required to separate the first tube piece <NUM> and the second tube piece <NUM>, the clip <NUM> and the clipping slot <NUM> may be separated by using a heavy force.

For example, as shown in <FIG>, the clipping slot <NUM> may be disposed on the outer wall surface of the second tube piece <NUM>, the clip <NUM> may be rotatably connected to the outer wall surface of the first tube piece <NUM>, and the clip <NUM> is configured to be capable of swinging in the radial direction of the first tube piece <NUM> to be snap-fitted to or separated from the clipping slot <NUM>. The clipping slot <NUM> may be of an arc shape or annular shape that extends in the circumferential direction of the second tube piece <NUM>, and its length of extension is greater than the corresponding length of its snap fitting to the clip <NUM>; in this case, one clipping slot <NUM> may be snap-fitted to a plurality of clips <NUM>. In addition, in such a mode of configuration, in order to prevent the clip <NUM> from disengaging from the clipping slot <NUM> when it is snap-fitted to the clipping slot <NUM>, the clip <NUM> may be configured to have a snap-fitting state in which it is snap-fitted to the clipping slot <NUM> and a separating state in which it is separated from the clipping slot <NUM>. Furthermore, the clip <NUM> swings from the snap-fitting state to the separating state merely when it is applied a force, and the clip <NUM> is always in the snap-fitting state naturally. As shown in <FIG>, when it is required to snap-fit the clip <NUM> to the clipping slot <NUM>, the right end of the clip <NUM> may be pressed to firstly make the clip <NUM> to swing to the separating state to allow it to be snap-fitted to the clipping slot <NUM>. A slide-proof part <NUM> may be disposed on the outer side surface of the right end of the clip <NUM>.

Certainly, another component may also be used to prevent the clip <NUM> from disengaging from the clipping slot <NUM> when it is snap-fitted to the clipping slot <NUM>. In other words, the tube assembly <NUM> may include a limiting member, and the limiting member is for preventing the clip <NUM> from disengaging from the clipping slot <NUM> when it is snap-fitted to the clipping slot <NUM>. For example, as shown in <FIG>, the limiting member is a lantern ring <NUM> that is movably nested outside the first tube piece <NUM> or the second tube piece <NUM> in the axial direction of the first tube piece <NUM>. When the clip <NUM> is snap-fitted to the clipping slot <NUM>, the lantern ring <NUM> may be moved leftwardly to cover the clip <NUM>, thereby preventing the clip <NUM> from rotating. When it is required to separate the first tube piece <NUM> and the second tube piece <NUM>, firstly the lantern ring <NUM> is moved rightwardly to expose the clip <NUM>, and subsequently the clip <NUM> is rotated till it is separated from the clipping slot <NUM>.

It may be envisaged that, in another embodiment, as shown in <FIG>, the connecting structure may also merely include the lantern ring <NUM>, the lantern ring <NUM> is rotatably connected to the first tube piece <NUM>, and the inner wall surface of the lantern ring <NUM> may be disposed with an internal thread. Correspondingly, the outer wall surface of the second tube piece <NUM> may be disposed with an external thread, and the internal thread and the external thread may be mutually locked by rotating the lantern ring <NUM>, whereby the first tube piece <NUM> and the second tube piece <NUM> are connected. When it is required to separate the first tube piece <NUM> and the second tube piece <NUM>, the lantern ring <NUM> may be rotated in the opposite direction, whereby the threads are released, to complete the separation.

For example, as shown in <FIG>, the clipping slot <NUM> is an L-shaped slot disposed in the tube wall of the second tube piece <NUM>, the L-shaped slot includes an axial part and a radial part, the clip <NUM> is a cylindrical piece that is protrusively disposed on the tube wall of the first tube piece <NUM>, and the cylindrical piece is capable of, when the first tube piece <NUM> and the second tube piece <NUM> are plug-connected, entering the axial part and moving to the radial part to implement the snap fitting. In this case, in order to prevent the clip <NUM> from disengaging from the clipping slot <NUM> when it is snap-fitted to the clipping slot <NUM>, as shown in <FIG>, the limiting member may be a lug <NUM> disposed inside the radial part, and the lug <NUM> may releasably stop the cylindrical piece. In usage, by rotating the first tube piece <NUM> or the second tube piece <NUM>, the cylindrical piece may move over the lug <NUM> and move to the left side of the lug <NUM> to implement the limiting. When it is required to separate the first tube piece <NUM> and the second tube piece <NUM>, the first tube piece <NUM> or the second tube piece <NUM> may be rotated in the opposite direction, whereby the cylindrical piece moves over the lug <NUM> and moves to the right side of the lug <NUM>, and in turn disengages the clipping slot <NUM>.

It should be noted that, in the above description, the clip <NUM> and the clipping slot <NUM> may exchange the positions. In addition, the clip <NUM> and the clipping slot <NUM> are not limited to the above-described structures, and other structures that may implement their function also fall within the protection scope of the present disclosure.

According to another embodiment of the connecting structure according to the present disclosure, as shown in <FIG>, the connecting structure includes a first protrusion <NUM> and a second protrusion <NUM> that match, the first protrusion <NUM> is disposed on the inner wall surface or the outer wall surface of the first tube piece <NUM>, the second protrusion <NUM> is disposed on the outer wall surface or the inner wall surface of the second tube piece <NUM>, and the first protrusion <NUM> and the second protrusion <NUM> are configured to be capable of snap-fitting or separating by the rotation relative to each other of the first tube piece <NUM> and the second tube piece <NUM>. Particularly, as shown in <FIG>, the first protrusion <NUM> may be T-shaped. As shown in <FIG>, the second protrusion <NUM> may include two convex parts that are separated in the circumferential direction of the second tube piece <NUM>. When the second tube piece <NUM> is plug-connected to the first tube piece <NUM>, the first protrusion <NUM> and the second protrusion <NUM> are made to avoid each other, and after the plug connection, by rotating the first tube piece <NUM> or the second tube piece <NUM>, the first protrusion <NUM> and the second protrusion <NUM> may face each other axially to implement the snap fitting, at which point the axial part of the first protrusion <NUM> is snap-fitted between the two convex parts to implement the rotary limiting. Certainly, the first protrusion <NUM> and the second protrusion <NUM> are not limited to the structures shown in <FIG>, and other structures that may implement the rotary snap fitting also fall within the protection scope of the present disclosure.

It should be noted that, in the above-described embodiments of the connecting structure, the connecting structure may include a plurality of clips <NUM> and a plurality of clipping slots <NUM>. The plurality of clips <NUM> and the plurality of clipping slots <NUM> may be disposed separately in the circumferential directions of the first tube piece <NUM> and the second tube piece <NUM>, respectively.

According to yet another embodiment of the connecting structure according to the present disclosure, the connecting structure may include a first magnet and a second magnet which magnetic poles are opposite, the first magnet is set at one of the first tube piece <NUM> and the second tube piece <NUM>, and the second magnet is set at the other of the first tube piece <NUM> and the second tube piece <NUM>. After the first tube piece <NUM> and the second tube piece <NUM> have been plug-connected, further connection may be implemented by the attraction between the first magnet and the second magnet.

According to still another embodiment of the connecting structure according to the present disclosure, the connecting structure may include a first thread and a second thread that match, the first thread is disposed at one of the first tube piece <NUM> and the second tube piece <NUM>, and the second thread is disposed at the other of the first tube piece <NUM> and the second tube piece <NUM>. In other words, the first tube piece <NUM> and the second tube piece <NUM> may be interconnected by the threads disposed on the inner wall surfaces or the outer wall surfaces.

The connecting structure according to the present disclosure is not limited to the above-described embodiments, and the connecting structure may also have other embodiments. For example, the second tube piece <NUM> may be disposed with a metal that may be magnetically attracted (for example, iron), and the first tube piece <NUM> may be disposed with an electromagnet device and a switch. Alternatively, the first tube piece <NUM> and the second tube piece <NUM> are disposed with an electric buckle and a buckle slot that match. When the second tube piece <NUM> is inserted into the first tube piece <NUM>, the switch is closed to form a loop, and the electromagnet, when electrified, has magnetism, to attract the metal on the second tube piece <NUM>, whereby the first tube piece <NUM> and the second tube piece <NUM> do not easily disengage. Alternatively, after the loop has been formed, the electric buckle acts to buckle the buckle slot in the second tube piece <NUM>. When the first tube piece <NUM> and the second tube piece <NUM> are to be separated, the switch is operated, and the electromagnet, when powered off, loses the magnetism, or the electric buckle, when powered off, is restored, whereby the first tube piece <NUM> and the second tube piece <NUM> may be easily separated.

In the present disclosure, the tube assembly <NUM> may further include a bent pipe <NUM>, and the bent pipe <NUM> is connected to the end of the second tube piece <NUM> that is further from the first tube piece <NUM>. The bent pipe <NUM> and the second tube piece <NUM> may be configured to be capable of rotating relatively to each other, and may also be configured to be not capable of rotating. The bent pipe <NUM> and the second tube piece <NUM> may also be formed integrally. An anti-suffocation valve plate <NUM> may be disposed inside the bent pipe <NUM>, to ensure the unidirectional flowing of the gas. In such a case, the tube assembly <NUM> is connected to the frame <NUM> by the bent pipe <NUM>.

In the present disclosure, the opening and closing of the outlet end of the first tube piece <NUM> and the opening and closing of the discharging hole <NUM> may also be automatically controlled. For example, after the first tube piece <NUM> and the second tube piece <NUM> have been connected, an electric signal may be generated (for example, by using a loop connection, a sensor, a touch switch and so on), and the signal controls the outlet end of the first tube piece <NUM> to open and the discharging hole <NUM> to close. After the first tube piece <NUM> and the second tube piece <NUM> have been separated, the connection between the first tube piece <NUM> and the second tube piece <NUM> is broken, and no electric signal is generated, at which point the outlet end of the first tube piece <NUM> is closed, and the discharging hole <NUM> is opened, to discharge the gas at a controllable flow rate.

In the present disclosure, the parameters of the discharging hole <NUM> (such as the quantity, the diameter thickness, the hole inner cone, the outer cone and the hydrophobic material) may be particularly set to further control the flow rate and reduce the noise. For example, when the discharging hole <NUM> is disposed in the tube wall of the first tube piece <NUM>, one of the inner wall surface and the outer wall surface of the tube wall may be formed by using a hydrophobic material or a hydrophilic material, or be spread-coated with a hydrophobic material or a hydrophilic material. The other of the wall surfaces may be formed or spread-coated by the other of a hydrophobic material and a hydrophilic material. The discharging hole <NUM> may be configured to be of a structure in which the ventilation areas at the two ends are different, for example a trapezoid or a hourglass shape. Particularly, when the tube assembly <NUM> is applied to a breathing mask, the discharging hole <NUM> may be configured according to the depth of the mask in the direction of the sagittal section (cutting a human body into a left part and a right part, the section interface between the left part and the right part refers to a sagittal plane). When the depth is lower, or, in other words, the face of the patient has a lower distance from the discharging hole <NUM>, it may be set that the proximal discharging-hole area is greater than the distal discharging-hole area, to prevent gas-flow intersection to make a large noise. When the depth is higher, or, in other words, the face of the patient has a higher distance from the discharging hole <NUM>, it may be set that the proximal discharging-hole area is greater than the distal discharging-hole area, which facilitates the dissipation of the discharged gas. In addition, a turbulent member (for example, a spoiler) may be disposed between the proximal component and the distal component, thereby reducing the noise of the gas discharging.

In the present disclosure, the quantity, the size, the spacing and the overall layout of the discharging holes <NUM> may have various embodiments. For example, the diameter of the discharging hole <NUM> may range <NUM>-<NUM>, preferably <NUM>-<NUM>. The thickness of the position where the discharging hole <NUM> is disposed may be <NUM>-<NUM>.

Another aspect of the present disclosure provides a ventilation-control method, wherein the method is performed by using the ventilation-treatment apparatus stated above, and the method includes the following steps:.

generating a first signal when the first valve assembly and the second valve assembly contact, and according to the first signal, controlling the mainframe <NUM> to start up or increase the ventilation capacity (i.e., increasing the gas flow rate from the mainframe <NUM> to the ventilation pipeline <NUM>); and/or.

generating a second signal when the first valve assembly and the second valve assembly are separated, and according to the second signal, controlling the mainframe <NUM> to shut down or reduce the ventilation capacity (i.e., reducing the gas flow rate from the mainframe <NUM> to the ventilation pipeline <NUM>).

In the present disclosure, the action of the mainframe <NUM> preferably happens after the actions of the first valve body <NUM> and the second valve body <NUM>. In addition, the method may further include: after the mainframe <NUM> has been started up, when the head band <NUM> and the headrest <NUM> disengage, enabling the ventilation-treatment apparatus to emit an alarm; according to the first signal, controlling the first valve body <NUM> and the second valve body <NUM> to move to the opening position; and according to the second signal, controlling the first valve body <NUM> and the second valve body <NUM> to move to the closing position.

In the present disclosure, in order to generate the first signal and the second signal, a heat sensing device or a pressure detecting device may be disposed at the headrest <NUM>. In usage, when the heat sensing device has sensed heat within a particular distance range, or when the pressure detecting device has detected the pressure by the head of the patient, the first signal is generated. When the heat sensing device does not sense heat within the particular distance range, or when the pressure detecting device does not detect the pressure by the head of the patient, the second signal is generated. It may be understood that the heat sensing device or the pressure detecting device may also be disposed at any other suitable position, for example a mattress.

According to an embodiment of the present disclosure, the pressure detecting device is disposed at the surface of the headrest <NUM>. When the patient lies down and prepares to accept the treatment, the head band <NUM> and the headrest <NUM> contact, and the first valve body <NUM> and the second valve body <NUM> automatically move to the opening position under the pressure of the head, to form a ventilation channel. At this point, the pressure detecting device detects the pressure, generates the first signal, and controls the mainframe <NUM> to start to operate in turn according to the first signal. When the patient gets up, the head band <NUM> and the headrest <NUM> are separated, and the first valve body <NUM> and the second valve body <NUM> automatically move to the closing position. At this point, the pressure detecting device does not detect the pressure, generates the second signal, and controls the mainframe <NUM> to stop operating in turn according to the second signal.

Claim 1:
A tube assembly for a ventilation treatment apparatus, wherein the tube assembly is for being connected to a main body (<NUM>) of a patient interface device (<NUM>) to communicate a respiratory cavity of the patient interface device (<NUM>) with a gas source, wherein the tube assembly (<NUM>) comprises a first tube piece (<NUM>) and a second tube piece (<NUM>), the tube assembly (<NUM>) is provided with a connecting state in which the first tube piece (<NUM>) and the second tube piece (<NUM>) are coaxially plug-connected and a separating state in which the first tube piece (<NUM>) and the second tube piece (<NUM>) are separated from each other, the tube assembly (<NUM>) further comprises a valve member;
wherein the first tube piece (<NUM>) is provided with an inlet end for connecting the gas source and an outlet end for connecting the second tube piece (<NUM>);
wherein the valve member is configured so that, in the connecting state, the valve member opens the outlet end of the first tube piece (<NUM>) to make the gas from the gas source to enter the second tube piece (<NUM>), and
characterized in that
the first tube piece (<NUM>) comprises a discharging hole (<NUM>), and the discharging hole (<NUM>) is configured so that, in the connecting state, the discharging hole (<NUM>) is closed to make the gas from the gas source to enter the second tube piece (<NUM>), and in the separating state, the discharging hole (<NUM>) is opened to make the gas from the gas source to be discharged outside from the discharging hole (<NUM>); and
the valve member is configured so that, in the separating state, the valve member closes the outlet end to make the gas from the gas source to be discharged outside from the discharging hole (<NUM>).