CN219896694U

CN219896694U - Breathing mask equipment

Info

Publication number: CN219896694U
Application number: CN202320075564.6U
Authority: CN
Inventors: 唐红; 马宏远; 黄冬平; 陈清龙; 尹鹏
Original assignee: Shenzhen Comen Medical Instruments Co Ltd
Current assignee: Shenzhen Comen Medical Instruments Co Ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-10-27
Anticipated expiration: 2033-01-10

Abstract

The present utility model provides a respiratory mask apparatus comprising: the mask comprises a mask body, a gas channel and a one-way valve, wherein the gas channel is communicated with the mask body and comprises a gas inlet and a gas outlet, and the one-way valve is arranged at the gas inlet and the gas outlet and is used for controlling the gas inlet of the gas inlet and the gas outlet of the gas outlet. When the breathing mask equipment is in an expiration state, the one-way valve positioned at the air outlet is opened, the one-way valve positioned at the air inlet is closed, and the air in the air channel is discharged through the air outlet; when the breathing mask device is in an inhalation state, the one-way valve positioned at the air outlet is closed, the one-way valve positioned at the air inlet is opened, and the air in the air channel is inhaled through the air inlet. The opening and closing of the one-way valve are controlled, so that the air inlet and the air outlet are controlled to be alternately opened and closed, and the phenomenon that air or bacteria are mixed or infected by the air is avoided when the breathing mask equipment is worn for inhaling.

Description

Breathing mask equipment

Technical Field

The utility model belongs to the technical field of breathing masks, and particularly relates to breathing mask equipment.

Background

Respiratory ventilation disorders in turn affect the physiological and metabolic functions of the body and, if not treated in time, can lead to respiratory failure and death of the patient. In recent years, medical science and technology has been developed, and non-invasive positive pressure ventilation, which is to establish an artificial airway without requiring a tracheal cannula or tracheotomy to perform noninvasive mechanical ventilation, is widely used clinically, so that complications related to the non-invasive positive pressure ventilation can be avoided. The most commonly used is non-invasive positive pressure ventilation through a nasal and oral mask, but in practice, when a patient wears the mask to inhale, external air or germs are easily inhaled, so that air mixing or germ infection is caused, the treatment purpose is not achieved, and the physical health of the patient is affected.

Disclosure of Invention

The technical purpose of the utility model is to provide a breathing mask device, which aims to solve the problem that external air or germs are easy to inhale when the breathing mask is used for inhaling in the prior art.

To solve the above technical problem, the present utility model is realized by a respiratory mask device, comprising: the device comprises a mask, a gas channel and a one-way valve, wherein the gas channel is communicated with the mask, the gas channel also comprises a gas inlet and a gas outlet, and the one-way valve is arranged at the gas inlet and the gas outlet and is used for controlling the gas inlet of the gas inlet and the gas outlet of the gas outlet; when the breathing mask equipment is in an expiration state, the one-way valve positioned at the air outlet is opened, and the one-way valve positioned at the air inlet is closed; and when the breathing mask equipment is in an inhalation state, the one-way valve positioned at the air outlet is closed, and the one-way valve positioned at the air inlet is opened.

In this scheme, through connecting the gas channel on the face guard, set up air inlet and gas outlet on the gas channel to set up the check valve in air inlet and gas outlet department, the air inlet of control air inlet and the gas outlet of gas outlet, the effectual air inlet and the gas outlet of separating. When the breathing mask equipment is in an expiration state, the inside of the gas channel is in positive pressure, the one-way valve positioned at the air outlet is opened, the one-way valve positioned at the air inlet is closed, and the gas in the gas channel is discharged through the air outlet; when the breathing mask device is in an inhalation state, the inside of the gas channel is in negative pressure, the one-way valve positioned at the air outlet is closed, the one-way valve positioned at the air inlet is opened, and gas in the gas channel is inhaled through the air inlet. The opening and closing of the one-way valve are controlled, so that the air inlet and the air outlet are controlled to be alternately opened and closed, and the phenomenon that air or bacteria are mixed or infected by the air is avoided when the breathing mask equipment is worn for inhaling.

Further, the one-way valve located at the gas inlet is disposed at the inner side of the gas channel, the one-way valve located at the gas outlet is disposed at the outer side of the gas channel, and the one-way valve can be opened or closed according to the change of the internal pressure of the gas channel.

In this scheme, through setting up the check valve that is located air inlet and gas outlet in the inboard and the outside of gas channel respectively, the inside pressure variation control check valve of gas channel opens and closes when the rethread breathes in and exhales for air inlet and gas outlet can more convenient open in turn and close, utilize the pressure variation that breathes in and exhale to cause simultaneously, do not need to increase extra sensing equipment or controlgear, structurally simpler.

Further, the check valve includes: the sealing piece covers the air inlet and the air outlet, and one end of the sealing piece can rotate relative to the air inlet and the air outlet; and the fixing piece is connected with the other end of the sealing piece and used for limiting the sealing piece to be completely separated from the gas channel. In this scheme, through setting up sealing member and mounting, control opening and closing of air inlet and gas outlet, the operation is more convenient. The sealing element covers the air inlet and the air outlet, can play a sealing role on the air inlet and the air outlet under the action of pressure, so that the corresponding air inlet or air outlet is in a closed state, one end of the sealing element can rotate relative to the air inlet and the air outlet under the action of pressure, and the fixing element prevents the other end of the sealing element from being completely separated from the air channel, so that the corresponding air inlet or air outlet is in an open state.

Further, the sealing member is made of elastic materials, and the sealing member abuts against the edges of the air inlet and the air outlet under the action of pressure.

In this scheme, set up the sealing member as elastomeric element, this elastomeric element butt is in the edge of air inlet and gas outlet under the effect of pressure, and when air inlet or gas outlet were in the closed condition, sealing member can be better seal air inlet or gas outlet to better assurance air inlet and gas outlet open or close in turn.

Further, the elastic material is silica gel or rubber.

In this solution, silica gel or rubber is the preferred choice of elastic material.

Further, the mounting includes: the connecting part penetrates through the sealing piece and is connected with the gas channel; and the limiting part is connected with one end of the connecting part far away from the gas channel, and the size of the connecting part is larger than that of the connecting part.

In this scheme, with the mounting setting including connecting portion and spacing portion, connecting portion are used for wearing to establish the sealing member and are connected with gas passage to with sealing member and gas passage fixed connection, spacing portion is connected with connecting portion, and the size of junction is greater than the size of connecting portion, thereby prevents that sealing member and gas passage from breaking away from, better realization fixed effect.

Further, the seal member is pressed by the gas passage and the stopper portion at the penetration portion of the connecting portion.

In this scheme, when connecting portion wears to establish inside the sealing member, the sealing member is worn to establish the position department by gas passage and spacing portion and is extruded at connecting portion, avoids the sealing member to produce to rock in the junction with connecting portion, influences the sealing performance of sealing member.

Further, the check valve further comprises: the device comprises an abutting piece and an elastic piece, wherein the abutting piece is connected with the gas channel and is arranged at the edges of the gas inlet and the gas outlet, one end of the elastic piece abuts against the abutting piece, and the other end of the elastic piece abuts against the sealing piece.

In this scheme, through set up butt spare and elastic component on the check valve for sealing member on the check valve can be better with air inlet or gas outlet butt, prevent that the condition that sealing member is closed not tight from appearing in the check valve. The abutting piece is arranged on the gas channel and located at the edges of the gas inlet and the gas outlet, and the elastic piece is arranged between the abutting piece and the sealing piece, so that the elastic piece abuts against the sealing piece under the action of the abutting piece, and contact between the sealing piece and the gas channel is guaranteed.

Further, the gas channel is a long-strip-shaped pipeline, one end of the long-strip-shaped pipeline is communicated with the mask, the gas inlet is arranged at the other end of the long-strip-shaped pipeline, and the gas outlet is arranged on the side wall of the long-strip-shaped pipeline.

In this scheme, set up the gas channel into rectangular pipeline, the one end and the face guard of rectangular pipeline are connected, and the air inlet sets up the other end at rectangular pipeline for the face guard, and the gas outlet sets up on the lateral wall of rectangular pipeline for the distance of air outlet and face guard is less than the distance of air inlet and face guard, more is favorable to the discharge of gas when exhaling.

Further, the respiratory mask device further comprises a storage box, the storage box is connected with the gas channel, and an outlet of the storage box is arranged corresponding to the position of the gas inlet.

In this scheme, through set up the bin at respiratory mask equipment, the bin is connected with gas channel, and the export of bin corresponds the position setting of gas channel air inlet, can store the gas that needs the inhalant in the bin, plays the effect of a switching, avoids directly in directly getting into gas channel with the gas channel air inlet that needs the inhalant.

Compared with the prior art, the breathing mask equipment has the beneficial effects that:

through connecting the gas channel on the face guard, set up air inlet and gas outlet on the gas channel to set up the check valve in air inlet and gas outlet department, through the change of gas channel internal pressure, thereby control the opening and the closure of check valve, and then control air inlet and gas outlet open in turn and close, inhale outside air or germ when avoiding breathing in, cause gaseous mixture or germ to infect.

Drawings

FIG. 1 is a schematic view of the overall structure of a respiratory mask apparatus in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional front view of a respiratory mask apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional front view of a respiratory mask apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a respiratory mask apparatus in a front view at an air inlet of an embodiment of the present utility model;

fig. 5 is a schematic view showing a bottom view of the air outlet of the breathing mask device according to the embodiment of the present utility model.

In the drawings, each reference numeral denotes:

a mask 100; a gas passage 200; an air inlet 210; an air outlet 220; a storage box 300; a seal 410; a fixing member 420; a connection portion 421; a limit part 422; an abutment 430; and an elastic member 440.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1 and 2, in the present embodiment, the respiratory mask 100 apparatus includes: the mask 100, the gas channel 200, the check valve and the storage box 300 are respectively positioned at two ends of the gas channel 200, one end of the gas channel 200 is communicated with the mask 100, and the check valve specifically comprises a sealing element 410, a fixing element 420, an abutting element 430 and an elastic element 440. The gas channel 200 includes a gas inlet 210 and a gas outlet 220, and a check valve is disposed at the gas inlet 210 and the gas outlet 220 for controlling the gas inlet 210 and the gas outlet 220. When the breathing mask 100 device is in the exhalation state, the one-way valve located at the air outlet 220 is open, and the one-way valve located at the air inlet 210 is closed; in the inhaled condition of the respiratory mask 100 apparatus, the one-way valve at the air outlet 220 is closed and the one-way valve at the air inlet 210 is opened.

Specifically, by connecting the gas channel 200 to the mask 100, providing the gas channel 200 with the gas inlet 210 and the gas outlet 220, and providing the check valves at the gas inlet 210 and the gas outlet 220, controlling the gas inlet of the gas inlet 210 and the gas outlet of the gas outlet 220, the gas inlet 210 and the gas outlet 220 can be effectively separated. When the breathing mask 100 is in the exhalation state, the inside of the gas channel 200 is at positive pressure, the one-way valve at the gas outlet 220 is opened, the one-way valve at the gas inlet 210 is closed, and the gas in the gas channel 200 is discharged through the gas outlet 220; when the apparatus of the breathing mask 100 is in the inhalation state, the inside of the gas passage 200 is at a negative pressure, the check valve at the gas outlet 220 is closed, the check valve at the gas inlet 210 is opened, and the gas in the gas passage 200 is inhaled through the gas inlet 210. By controlling the opening and closing of the check valve, the air inlet 210 and the air outlet 220 are controlled to be alternately opened and closed, so that the air or germs are easily inhaled when the breathing mask 100 device is worn for inhalation, and the air mixing or germ infection is avoided.

In this embodiment, the storage tank 300 is connected to the gas channel 200, and the outlet of the storage tank 300 is disposed corresponding to the position of the gas inlet 210. Specifically, as shown in fig. 1 and 2, the storage box 300 is communicated with the gas channel 200, so that the gas to be inhaled can be stored in the storage box 300, which plays a role of switching, and the gas to be inhaled is prevented from directly entering the gas channel 200 through the gas inlet 210. In addition, the outlet of the storage tank 300 is arranged corresponding to the position of the gas inlet 210 of the gas channel 200, the joint at the inlet of the storage tank 300 can be connected with an external gas supply device, the joint at the inlet of the storage tank 300 can be designed according to the legal standard, or the joint meeting the legal standard can be directly selected, so that the gas supply device can be conveniently connected with a pipeline of the gas supply device, and the gas can be better input into the storage tank 300. Of course, in other embodiments, the gas inlet 210 of the gas channel 200 may be directly connected to an external gas supply.

As shown in fig. 2, 3 and 4, the check valve at the gas inlet 210 is disposed at the inner side of the gas passage 200, and the check valve at the gas outlet 220 is disposed at the outer side of the gas passage 200, and the check valve can be opened or closed according to the change of the internal pressure of the gas passage 200. That is, the check valve of the gas inlet 210 is disposed at the inner side of the gas channel 200, when the check valve of the gas inlet 210 is opened, the corresponding gas inlet 210 is also in an opened state, so that the gas in the storage tank 300 can enter the gas channel 200, and when the check valve of the gas inlet 210 is closed, the corresponding gas inlet 210 is also in a closed state, so that the gas in the storage tank 300 is prevented from entering the gas channel 200; the check valve of the air outlet 220 is disposed at the outer side of the air channel 200, when the check valve of the air outlet 220 is opened, the corresponding air outlet 220 is also in an opened state, so that the air in the air channel 200 can be discharged from the air outlet 220, and when the check valve of the air outlet 220 is closed, the corresponding air outlet 220 is also in a closed state, so that the air in the air channel 200 can be prevented from being discharged. By arranging the check valves at the air inlet 210 and the air outlet 220 at the inner side and the outer side of the air channel 200 respectively, and controlling the opening and closing of the check valves by utilizing the pressure change in the air channel 200 during inspiration and expiration, the air inlet 210 and the air outlet 220 can be opened and closed more conveniently and alternately, and meanwhile, the pressure change caused by inspiration and expiration is utilized, so that no additional sensing equipment or control equipment is needed, and the structure is simpler.

As described above, as shown in fig. 2, 3 and 4, the check valve in this embodiment includes the sealing member 410 and the fixing member 420, the sealing member 410 covers the gas inlet 210 and the gas outlet 220, one end of the sealing member 410 is rotatable relative to the gas inlet 210 and the gas outlet 220, and the fixing member 420 is connected to the other end of the sealing member 410 to limit the sealing member 410 from completely separating from the gas channel 200. Specifically, the sealing member 410 may be sized to cover the air inlet 210 and the air outlet 220, one end of the sealing member 410 may rotate relative to the air inlet 210 and the air outlet 220, and the air inlet 210 and the air outlet 220 may be in an open or closed state by the contact and separation of the sealing member 410 and the air inlet 210 or the air outlet 220, and when the sealing member 410 contacts the air inlet 210 or the air outlet 220, the sealing member 410 blocks the air inlet 210 or the air outlet 220, so that the corresponding air inlet 210 or air outlet 220 is in a closed state; when one end of the sealing member 410 is separated from the gas inlet 210 or the gas outlet 220 by rotation, the corresponding gas inlet 210 or gas outlet 220 is in an opened state, and the other end of the sealing member 410 is fixed to the gas passage 200 by the fixing member 420, preventing the sealing member 410 from being completely separated from the gas passage 200. By providing the sealing member 410 and the fixing member 420, the opening and closing of the gas inlet 210 and the gas outlet 220 are controlled, so that the operation is more convenient, and of course, in other embodiments, the check valve may also be selected from other structures existing in the prior art, so long as the check valve can control the opening and closing of the gas inlet 210 or the gas outlet 220 according to the change of the pressure in the gas channel 200.

Further, the sealing member 410 is made of an elastic material, and the elastic material abuts against the edges of the air inlet 210 and the air outlet 220 under the action of pressure. In this embodiment, the elastic material is specifically selected from silica gel or rubber, and when the air inlet 210 or the air outlet 220 is in a closed state, the sealing member 410 can better seal the air inlet 210 or the air outlet 220, so that the air inlet 210 and the air outlet 220 can be better ensured to be alternately opened or closed, and the sealing member 410 is set to be silica gel or rubber and can be better matched with the pressure in the air channel 200 to rotate, so as to control the opening and closing of the air inlet 210 or the air outlet 220. Of course, in other embodiments, the sealing member 410 may not be made of an elastic material, and even if an elastic material is used, an elastic material other than silica gel or rubber may be used, so long as the sealing member can cover the air inlet 210 or the air outlet 220, and the air tightness of the air inlet 210 or the air outlet 220 is ensured and the sealing member can rotate.

As shown in fig. 3 and 4, the fixing member 420 includes a connecting portion 421 and a limiting portion 422, the connecting portion 421 is disposed through the sealing member 410 and connected to the gas channel 200, the limiting portion 422 is connected to an end of the connecting portion 421 away from the gas channel 200, and a size of the connecting portion 421 is larger than a size of the connecting portion 421. Specifically, the fixing member 420 is provided at one end of the sealing member 410, and when the sealing member 410 rotates with respect to the gas passage 200, the fixing member 420, which is connected to one end of the sealing member 410, prevents the end of the sealing member 410 from rotating with respect to the gas passage 200, thereby preventing the sealing member 410 from being completely separated from the gas passage 200. In this embodiment, the fixing member 420 specifically includes a connecting portion 421 and a limiting portion 422, one end of the connecting portion 421 is fixed on the gas channel 200, the sealing member 410 is connected with the gas channel 200 through the connecting portion 421, after the connecting portion 421 passes through the sealing member 410, the limiting portion 422 is disposed at the other end of the connecting portion 421, and at the connection between the limiting portion 422 and the connecting portion 421, the size of the limiting portion 422 is larger than that of the connecting portion 421, at this time, the sealing member 410 is fixed between the limiting portion 422 and the gas channel 200, and the sealing member 410 at this point will not rotate relative to the gas channel 200, and when one end of the sealing member 410 rotates along with the pressure of the gas channel 200, it will not separate from the gas channel 200.

Further, the sealing member 410 is pressed by the gas passage 200 and the limiting portion 422 at the penetrating portion of the connecting portion 421. That is, when the connection portion 421 is inserted into the seal 410, the seal 410 is pressed by the gas channel 200 and the limiting portion 422 at the insertion portion of the connection portion 421, so as to prevent the seal 410 from shaking at the connection portion with the connection portion 421, and to affect the sealing performance of the seal 410.

In this embodiment, the fixing member 420 specifically adopts the connection portion 421 and the limiting portion 422 to fix the sealing member 410, and in the actual manufacturing process, the fixing member and the gas channel 200 may be integrally injection molded, and then the elastic clamping of the sealing member 410 is utilized between the limiting portion 422 and the gas channel 200. The connecting portion 421 and the gas passage 200 may be integrally injection molded, and the sealing member 410 may be sleeved on the connecting portion 421 and then connected to the limiting portion 422.

As described above, as shown in fig. 1 and 5, the check valve further includes an abutting member 430 and an elastic member 440, wherein the abutting member 430 is connected with the gas channel 200 and disposed at the edge of the gas inlet 210 and the gas outlet 220, and one end of the elastic member 440 abuts against the abutting member 430 and the other end abuts against the sealing member 410. Specifically, an abutment member 430 and an elastic member 440 are disposed at the other end of the sealing member 410 connected to the fixing member 420, and the abutment member 430 and the elastic member 440 are disposed at the edges of the gas inlet 210 and the gas outlet 220, wherein the abutment member 430 has an L-shaped structure, one end of the abutment member 430 is fixed to the gas passage 200, the other end extends in the direction of the sealing member 410, and the elastic member 440 is disposed between the abutment member 430 and the elastic member 440. By utilizing the elastic force of the elastic element 440, the sealing element 410 on the check valve can better abut against the air inlet 210 or the air outlet 220, so as to prevent the check valve from being closed loosely. Of course, the elastic member 440 preferably selects a compression spring having a smaller elastic force, which provides an elastic force smaller than the pressure generated in the gas passage 200 upon exhalation or inhalation.

As shown in fig. 1 and 2, in this embodiment, the gas channel 200 is a long-strip-shaped pipe, one end of the long-strip-shaped pipe is communicated with the mask 100, the gas inlet 210 is disposed at the other end of the long-strip-shaped pipe, and the gas outlet 220 is disposed on the side wall of the long-strip-shaped pipe, so that the distance between the gas outlet 220 and the mask 100 is smaller than the distance between the gas inlet 210 and the mask 100, which is more beneficial to the discharge of gas during exhalation. Of course, in other embodiments, the gas passages 200 may be configured in other shapes as desired, and the gas inlets 210 and the gas outlets 220 may be configured as desired without strict regulation.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A respiratory mask apparatus, comprising: the device comprises a mask, a gas channel and a one-way valve, wherein the gas channel is communicated with the mask, the gas channel also comprises a gas inlet and a gas outlet, and the one-way valve is arranged at the gas inlet and the gas outlet and is used for controlling the gas inlet of the gas inlet and the gas outlet of the gas outlet;

when the breathing mask equipment is in an expiration state, the one-way valve positioned at the air outlet is opened, and the one-way valve positioned at the air inlet is closed;

when the breathing mask equipment is in an inhalation state, the one-way valve positioned at the air outlet is closed, and the one-way valve positioned at the air inlet is opened;

the one-way valve positioned at the air inlet is arranged at the inner side of the air channel, the one-way valve positioned at the air outlet is arranged at the outer side of the air channel, and the one-way valve can be opened or closed according to the change of the internal pressure of the air channel;

the check valve includes:

the sealing piece covers the air inlet and the air outlet, and one end of the sealing piece can rotate relative to the air inlet and the air outlet;

and the fixing piece is connected with the other end of the sealing piece and used for limiting the sealing piece to be completely separated from the gas channel.

2. The respiratory mask apparatus according to claim 1, wherein the material of the seal is an elastic material, the seal abutting edges of the air inlet and the air outlet under pressure.

3. The respiratory mask apparatus according to claim 2, wherein the elastic material is a silicone or rubber.

4. The respiratory mask apparatus according to claim 1, wherein the securing member comprises:

the connecting part penetrates through the sealing piece and is connected with the gas channel;

and the limiting part is connected with one end of the connecting part far away from the gas channel, and the size of the connecting part is larger than that of the connecting part.

5. The respiratory mask apparatus according to claim 4, wherein the seal is compressed by the gas passage and the stopper portion at a penetration portion of the connecting portion.

6. The respiratory mask apparatus according to claim 1, wherein the one-way valve further comprises:

the device comprises an abutting piece and an elastic piece, wherein the abutting piece is connected with the gas channel and is arranged at the edges of the gas inlet and the gas outlet, one end of the elastic piece abuts against the abutting piece, and the other end of the elastic piece abuts against the sealing piece.

7. The respiratory mask apparatus according to any one of claims 1-6, wherein the gas passage is an elongated conduit, one end of the elongated conduit is in communication with the mask, the gas inlet is disposed at the other end of the elongated conduit, and the gas outlet is disposed on a side wall of the elongated conduit.

8. The respiratory mask apparatus according to any one of claims 1-6, further comprising a reservoir connected to the gas passage, wherein an outlet of the reservoir is positioned corresponding to the position of the gas inlet.