Oxygen inhalation mask

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to an oxygen inhalation mask. Comprising an outer-layer mask body and an inner-layer mask body, the inner-layer mask body is located on the inner side of the outer-layer mask body, and an oxygen temporary storage space is formed between the inner-layer mask body and the outer-layer mask body; an oxygen inlet is formed in the outer-layer mask body, the oxygen inlet is used for being connected with an oxygen generator, a telescopic jacket is arranged on the inner side of the inner-layer mask body, the telescopic jacket is communicated with the oxygen temporary storage space, and the oxygen inlet is also communicated with the oxygen temporary storage space; a ventilation assembly is arranged on the inner side of the inner-layer mask body, one end of the ventilation assembly communicates with the oxygen temporary storage space, and the other end of the ventilation assembly is used for being placed in the nasal cavity of the human body. And a waste gas port is formed in the inner-layer cover body and / or the outer-layer cover body. Oxygen can be directly fed into the nasal cavity of the human body, the human body can easily inhale sufficient oxygen, and the oxygen concentration provided by the oxygen inhalation mask can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and in particular relates to an oxygen absorption mask. Background Art

[0002] Oxygen masks are devices that transfer oxygen from an oxygen generator to human lungs, including medical oxygen masks, civilian oxygen masks, and other types. Oxygen masks play an important role in assisting the treatment of diseases and ensuring life safety because they can deliver oxygen to the human body.

[0003] In the prior art, the structure of oxygen masks is also diversified. Some are single-layer masks with air holes and connection holes. The connection holes are used to connect the oxygen generator, and the air holes are used to discharge exhaust gas, such as the oxygen mask structures involved in models such as OP03001, OP03002, OP03005, OP03006, OP03007, OP03008, OP03009, OP03019, OP03020, OP03022, OP03025, OP03026, OP03028, OP03029, QP71131 and QP71134. Some oxygen masks have built-in oxygen bags, which are convenient to carry and use, and do not require additional connection to an oxygen generator. There are also oxygen masks with adjustable concentration and inflatable oxygen masks. Masks with different structures are suitable for different scenarios and people.

[0004] Although there are many types of oxygen masks in the prior art, they are mainly designed and differentiated according to the oxygen delivery form or oxygen concentration. Most of these oxygen masks are worn on the head, including the mouth and nose. There are few structures that connect the mask to the nasal cavity. Oxygen cannot be directly delivered to the nasal cavity, which affects the body's absorption of oxygen. Therefore, it is necessary to improve the existing oxygen mask structure. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an oxygen absorption mask.

[0006] The object of the present invention is to provide an oxygen breathing mask, comprising an outer layer mask body and an inner layer mask body, wherein the inner layer mask body is located inside the outer layer mask body, and an oxygen temporary storage space is formed between the inner layer mask body and the outer layer mask body;

[0007] The outer cover body is provided with an oxygen inlet, and the oxygen inlet is used to connect to the oxygen generator. The inner side of the inner cover body is provided with a retractable jacket, and the retractable jacket is communicated with the oxygen temporary storage space, and the oxygen inlet is also communicated with the oxygen temporary storage space;

[0008] A ventilation component is provided inside the inner layer cover body, one end of the ventilation component is connected to the oxygen temporary storage space, and the other end of the ventilation component is used to be placed in the human nasal cavity;

[0009] The inner cover body and / or the outer cover body are provided with an exhaust port.

[0010] Preferably, in the above-mentioned oxygen mask, the ventilation component is a ventilation hose.

[0011] Preferably, in the above oxygen mask, the sum of the diameter of the ventilation hose and the diameter of the exhaust port is 1 mm to 3 mm smaller than the diameter of the oxygen inlet.

[0012] Preferably, the above oxygen mask, the ventilation assembly includes a connecting tube and an expandable tube, both ends of the connecting tube are open, and one end of the connecting tube is connected to the inner layer cover body and communicates with the oxygen temporary storage space, the other end of the connecting tube is located inside the inner layer cover body and is connected to the expandable tube, the expandable tube includes at least two air guide plates, all of which are connected to the connecting tube;

[0013] The expandable tube comprises a closed structure and an open structure. In the closed structure, the edges of the air guide plates are in contact with each other, and in the open structure, the edges of the air guide plates are separated.

[0014] Preferably, in the above-mentioned oxygen absorption mask, the downstream end of the air guide plate is configured as a bent plate.

[0015] Preferably, in the above oxygen absorption mask, the connecting tube and the air guide plate are connected by an elastic layer.

[0016] Preferably, in the above oxygen absorption mask, the elastic layer is a sandalwood rubber layer.

[0017] Preferably, in the above oxygen mask, the connecting tube is a truncated cone structure, and the diameter of its upstream port is smaller than the diameter of its downstream port.

[0018] Preferably, in the above oxygen mask, the inner cover body is provided with a pit, and the pit is sunken from the outer side of the inner cover body to the inner side; the retractable jacket is provided at the pit, and the retractable jacket is located inside the inner cover body.

[0019] Preferably, in the above oxygen inhalation mask, the portion of the outer cover body where the inner cover body is not provided is a waste discharge space, and waste gas outlets are provided on the inner cover body and the outer cover body at the waste discharge space.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention designs a double-layer oxygen-absorbing mask, which is equipped with an inner layer mask and an outer layer mask, a ventilation component adapted to the nasal cavity, and an oxygen inlet and other components adapted to the inner layer mask, the outer layer mask and the ventilation component. Through the oxygen-absorbing mask, oxygen can be directly delivered to the human nasal cavity, which is conducive to the human body inhaling sufficient oxygen and can ensure the oxygen concentration provided by the oxygen-absorbing mask.

[0022] In the present invention, a retractable jacket is provided on the inner side of the inner layer cover body, and the retractable jacket is communicated with the oxygen temporary storage space. When the oxygen generated by the oxygen generator enters the oxygen temporary storage space via the oxygen inlet, the retractable jacket expands and tightly clamps the nose, such as clamping the bridge of the nose, so that no additional elastic rope is required to wear the oxygen mask. In addition, after the bridge of the nose is clamped by the retractable jacket, the bridge of the nose has a pressing and massaging effect, which can soothe the nasal mucosa, stretch the nasal mucosa, and ventilate the nose to enhance the oxygen delivery effect of the ventilation component. When adjusting the oxygen flow rate, in addition to directly adjusting the oxygen flow rate of the ventilation component, the impact force on the retractable jacket can also be adjusted to produce massage effects of different strengths on the bridge of the nose.

[0023] In the present invention, the expandable tube includes a closed structure and an open structure. The edges of the air guide plates in the closed structure are in contact, and the edges of the air guide plates in the open structure are separated. Oxygen can overflow from the gaps between the edges and can also overflow from the expandable tube mouth. The multi-directional oxygen overflow can fill all parts of the nasal cavity, making it convenient for human body to inhale.

[0024] In the present invention, the sum of the diameter of the ventilation hose and the diameter of the exhaust port is 1 mm to 3 mm smaller than the diameter of the oxygen inlet, so that the pressure in the oxygen temporary storage space is slightly greater than the atmospheric pressure, and there is always a certain impact force on the ventilation hose and the retractable jacket, and the position of the ventilation hose in the human nasal cavity can also be relatively fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the front structure of the oxygen breathing mask according to Example 1 of the present invention.

[0026] Figure 2 This is a schematic diagram of the front structure of the inner cover body of Example 1 of the present invention, and the retractable jacket is not expanded.

[0027] Figure 3 This is a schematic diagram of the side structure of the oxygen breathing mask according to Example 1 of the present invention, in which the retractable jacket is not expanded.

[0028] Figure 4 This is a side view of the oxygen mask in use according to Example 1 of the present invention, in which the retractable jacket has been expanded.

[0029] Figure 5 This is a front view of the inner cover body of Example 1 of the present invention in use, and the retractable jacket has been expanded.

[0030] Figure 6 This is a schematic structural diagram of the closed structure of the ventilation assembly of Example 2 of the present invention.

[0031] Figure 7 This is a schematic structural diagram of the open structure of the ventilation assembly of Example 2 of the present invention.

[0032] Figure 8 This is a diagram of the connection structure of the connecting tube, the air guide plate and the elastic layer in Example 2 of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand and implement the technical solution of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings.

[0034] In the description of the present invention, unless otherwise specified, all reagents used are commercially available and all methods used are conventional techniques in the art.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0037] In view of the fact that in the prior art, most oxygen masks are worn on the head, including the mouth and nose, and there is rarely a connection structure between the mask and the nasal cavity, oxygen cannot be directly delivered to the nasal cavity, which affects the body's absorption of oxygen. In order to overcome this technical problem, the present invention provides a new structure of an oxygen mask, see Figure 1, comprising an outer mask body 1 and an inner mask body 2, wherein the inner mask body 2 is located inside the outer mask body 1, and an oxygen temporary storage space 3 is formed between the inner mask body 2 and the outer mask body 1. The inner mask body 2 is used to be worn on the human nose, and the outer mask body 1 can wrap the human mouth and nose, or only wrap the nose. The outer mask body 1 is provided with an oxygen inlet 11, and the oxygen inlet 11 is used to connect the oxygen generator. A retractable jacket 4 is provided on the inner side of the inner mask body 2, and the retractable jacket 4 is connected to the oxygen temporary storage space 3, and the oxygen inlet 11 is also connected to the oxygen temporary storage space 3. When the oxygen generated by the oxygen generator enters the oxygen temporary storage space 3 through the oxygen inlet 11, the retractable jacket 4 expands and tightly clamps the nose, such as clamping the bridge of the nose, so that no additional elastic rope is required to wear the oxygen mask. In addition, a ventilation component 5 is provided inside the inner mask body 2, one end of the ventilation component 5 is connected to the oxygen temporary storage space 3, and the other end of the ventilation component 5 is used to be placed in the human nasal cavity, so that the oxygen in the oxygen temporary storage space 3 can be directly delivered to the nasal cavity, so that the human body can inhale sufficient oxygen, which is beneficial to the human body's absorption of oxygen. An exhaust port 6 is provided on the inner mask body 2 and / or the outer mask body 1 for exhausting exhaust gas.

[0038] In summary, the present invention designs a double-layer oxygen mask, configures an inner mask 2 and an outer mask 1, configures a ventilation assembly 5 adapted to the nasal cavity, and further configures components such as an oxygen inlet 11 adapted to the inner mask 2, the outer mask 1 and the ventilation assembly 5. Oxygen can be directly delivered to the human nasal cavity, which is beneficial for the human body to inhale sufficient oxygen and can ensure the oxygen concentration provided by the oxygen mask.

[0039] In order to explain the structure and working principle of the oxygen breathing mask of the present invention in detail, the present invention provides the following specific embodiments.

[0040] Example 1

[0041] The present invention provides an oxygen breathing mask, see Figure 1 , comprising an outer mask body 1 and an inner mask body 2, wherein the inner mask body 2 is located inside the outer mask body 1, and an oxygen temporary storage space 3 is formed between the inner mask body 2 and the outer mask body 1. The inner mask body 2 is used to be worn on the human nose, the outer mask body 1 can cover the human mouth and nose, or only the nose, and the oxygen temporary storage space 3 is used to temporarily store oxygen.

[0042] Exemplarily, the outer cover body 1 and the inner cover body 2 are both made of medical mask materials, such as polyvinyl chloride or medical TPU, which have high strength, good toughness and anti-fungal properties, and these materials feel comfortable and safe when worn by the human body.

[0043] Exemplarily, the size of the outer cover body 1 is designed to be diversified due to different applicable populations, for example, there are extra large sizes: 300 mm to 350 mm in diameter, suitable for adults, and more specific diameter sizes such as 300 mm, 330 mm, and 350 mm; large size: 200 mm to 240 mm in diameter, suitable for children aged 4 years old, and more specific diameter sizes such as 200 mm, 220 mm, and 240 mm; medium size: 180 mm to 200 mm in diameter, suitable for newborns to children aged 4 years old, and more specific diameter sizes such as 180 mm, 1900 mm, and 200 mm; small size: 140 mm to 160 mm in diameter, suitable for premature infants and newborns, and more specific diameter sizes such as 140 mm, 150 mm, and 160 mm.

[0044] Since the inner cover body 2 is located inside the outer cover body 1, the diameter of the inner cover body 2 is designed to be 2 / 5 to 4 / 5 of the diameter of the outer cover body 1. More specifically, the diameter of the inner cover body 2 is designed to be 2 / 5, 3 / 5 or 4 / 5 of the diameter of the outer cover body 1.

[0045] The outer cover body 1 is provided with an oxygen inlet 11, which is used to connect the oxygen generator. The oxygen inlet 11 is communicated with the oxygen temporary storage space 3 and is used to deliver oxygen to the oxygen temporary storage space 3. The oxygen generator is a tank body, an oxygen bag or an oxygen production device storing oxygen. The oxygen inlet 11 can be circular, rectangular, square or elliptical. In order to facilitate the connection of the tank body storing oxygen, the oxygen inlet 11 is preferably set to be circular. An oxygen pipe is set between the oxygen inlet 11 and the oxygen generator to achieve the connection between the oxygen inlet 11 and the oxygen generator. In order to adjust the oxygen flow rate and oxygen concentration, a flow valve is set on the oxygen generator.

[0046] Reference Figure 1 and Figure 2 A retractable jacket 4 is provided on the inner side of the inner mask body 2, and the retractable jacket 4 is connected to the oxygen temporary storage space 3. When the oxygen generated by the oxygen generator enters the oxygen temporary storage space 3 through the oxygen inlet 11, the retractable jacket 4 expands and tightly clamps the nose, such as clamping the bridge of the nose, so that no additional elastic rope is needed to wear the oxygen mask.

[0047] Exemplarily, the retractable jacket 4 adopts an elastic bag, such as an elastic rubber bag or an elastic rubber bag. When the oxygen generator continuously delivers oxygen to the oxygen temporary storage space 3, the gas concentration in the oxygen temporary storage space 3 increases, which can make the retractable jacket 4 expand and play the role of clamping the bridge of the nose.

[0048] In order to make the retractable jacket 4 work more stably, a pit 21 is provided on the inner layer mask 2. The pit 21 is recessed from the outer side of the inner layer mask 2 to the inner side. That is, when the inner layer mask 2 is worn on the nose of a human body, the pit 21 is recessed toward the bridge of the nose. The retractable jacket 4 is provided on the side of the pit 21 facing the bridge of the nose. That is, the retractable jacket 4 is located on the inner side of the inner layer mask 2. When the retractable jacket 4 expands, the bridge of the nose of the human body expands directly. For example, referring to Figure 2 , Figure 2 The center line is the position of the human nose bridge, which is regarded as the inner side of the inner mask body 2; Figure 3 , perpendicular to Figure 3 The position inward from the paper is the position of the bridge of the human nose. The retractable jacket 4 can at least be moved perpendicular to Figure 3 The paper surface direction expands inwards to clamp the human nose bridge placed on the inner mask body 2. Figure 4 and Figure 5 The structure shown in FIG. 4 is after the side of the retractable jacket 4 is expanded. Figure 5 What is shown in FIG. 1 is the positional relationship of the retractable jacket 4 after expansion between the two sides.

[0049] In order to increase wearing comfort, the number of the retractable jackets 4 is two, and they are symmetrically arranged on the inner side of the inner mask body 2 . When worn, the bridge of the human nose is located between the two retractable jackets 4 .

[0050] Reference Figure 3 to Figure 5 , a ventilation component 5 is provided on the inner side of the inner mask body 2, one end of the ventilation component 5 is connected to the oxygen temporary storage space 3, and the other end of the ventilation component 5 is used to be placed in the human nasal cavity, so that the oxygen in the oxygen temporary storage space 3 can be directly delivered to the nasal cavity for the human body to inhale sufficient oxygen. The portion of the outer mask body 1 where the inner mask body 2 is not provided is a waste discharge space 31, and waste gas ports 6 are provided on the inner mask body 2 and the outer mask body 1 at the waste discharge space 31 for discharging waste gas. The waste gas exhaled by the human body can be discharged through the waste gas port 6. For example, when wearing an oxygen mask, the human mouth is placed in the waste discharge space 31, and the waste gas exhaled from the human mouth can be discharged through the waste discharge space 31 and the waste gas port 6.

[0051] Exemplarily, the ventilation component 5 is a ventilation hose. When the oxygen in the temporary oxygen storage space 3 is sufficient, on the one hand, the retractable clamp 4 is used to clamp the bridge of the nose, and on the other hand, the oxygen enters the nasal cavity through the ventilation component 5.

[0052] Exemplarily, the sum of the diameter of the ventilation hose and the diameter of the exhaust port 6 is 1 mm to 3 mm smaller than the diameter of the oxygen inlet 11, so that the speed at which oxygen enters the oxygen temporary storage space 3 is greater than the speed at which oxygen is discharged from the ventilation hose and the exhaust port 6, and because of the size relationship of "1 mm to 3 mm", the pressure in the oxygen temporary storage space 3 is slightly greater than the atmospheric pressure, which always has a certain impact force on the ventilation hose and the retractable jacket 4, and the position of the ventilation hose in the human nasal cavity can also be relatively fixed, and the ventilation hose can maintain the effect of opening for ventilation. On the other hand, according to medical research, when the human nose is blocked, the nasal mucosa is in a state of contraction or expansion, and when the nose is blocked, the oxygen delivery effect of the ventilation component 5 will be affected. Therefore, the present invention has a pressing and massaging effect on the nose bridge after the retractable jacket 4 clamps the nose bridge, which can soothe the nasal mucosa, stretch the nasal mucosa, and ventilate the nose, so as to enhance the oxygen delivery effect of the ventilation component 5. When adjusting the oxygen flow, in addition to directly adjusting the oxygen flow of the ventilation component 5, the impact force on the retractable jacket 4 can also be adjusted to produce massage effects of different strengths on the bridge of the nose.

[0053] In summary, the present invention is designed as an oxygen-absorbing mask with a double-layer cover, equipped with an inner cover 2 and an outer cover 1, equipped with a ventilation assembly 5 and a retractable jacket 4 adapted to the nasal cavity, and also equipped with components such as an oxygen inlet 11 adapted to the inner cover 2, the outer cover 1 and the ventilation assembly 5. Oxygen can be directly delivered to the human nasal cavity, which is conducive to the human body inhaling sufficient oxygen and can ensure the oxygen concentration provided by the oxygen-absorbing mask. Even if the human nose is blocked, it can be alleviated by the oxygen-absorbing mask of the present invention and the ventilation assembly 5 can fully play the role of delivering oxygen to the nose.

[0054] Example 2

[0055] An oxygen mask, which has a structure basically the same as that of embodiment 1, comprises an outer mask body 1 and an inner mask body 2, wherein the inner mask body 2 is located inside the outer mask body 1, and an oxygen temporary storage space 3 is formed between the inner mask body 2 and the outer mask body 1. The inner mask body 2 is used to be worn on the human nose, the outer mask body 1 can wrap the human mouth and nose, or only wrap the nose, the outer mask body 1 is provided with an oxygen inlet 11, and the oxygen inlet 11 is used to connect an oxygen generator, a retractable jacket 4 is provided on the inner side of the inner mask body 2, and the retractable jacket 4 is connected to the oxygen temporary storage space 3, and the oxygen inlet 11 is also connected to the oxygen temporary storage space 3, when the oxygen generated by the oxygen generator enters the oxygen temporary storage space 3 through the oxygen inlet 11, the retractable jacket 4 expands and tightly clamps the nose, such as clamping the bridge of the nose, so that no additional elastic rope is required to wear the oxygen mask. A ventilation assembly 5 is provided inside the inner layer mask body 2, one end of the ventilation assembly 5 is connected to the oxygen temporary storage space 3, and the other end of the ventilation assembly 5 is used to be placed in the human nasal cavity, so that the oxygen in the oxygen temporary storage space 3 can be directly delivered to the nasal cavity for the human body to inhale sufficient oxygen. At this time, the waste gas exhaled from the human mouth does not enter the oxygen temporary storage space 3, avoiding the problem of the exhaled waste gas mixing with oxygen and affecting the oxygen concentration. A waste gas port 6 is provided on the inner layer mask body 2 and / or the outer layer mask body 1 for discharging the waste gas.

[0056] The difference from the first embodiment is that the structure of the ventilation assembly 5 of the present embodiment is shown in FIG. Figure 6 to Figure 8 , including a connecting tube 51 and an expandable tube 52. Both ends of the connecting tube 51 are open, and one end of the connecting tube 51 is connected to the inner cover body 2 and communicates with the oxygen temporary storage space 3. The other end of the connecting tube 51 is located on the inner side of the inner cover body 2 and is connected to the expandable tube 52. The expandable tube 52 includes at least two air guide sheets 521. All the air guide sheets 521 are connected to the connecting tube 51 and can form a tubular structure.

[0057] The expandable tube 52 includes a closed structure and an expanded structure, wherein the closed structure is Figure 6 , the edges of the air guide plates 521 are in contact, and the open structure is shown in FIG. Figure 7 The edges of the air guide plates 521 are separated, and oxygen can escape from the gaps between the edges. Figure 7 The openable tube 52 on the right side overflows, and the multi-directional oxygen overflow can fill all parts of the nasal cavity, making it convenient for human body to inhale.

[0058] Exemplarily, the air guide sheet 521 is made of an elastic sheet, such as an elastic plastic sheet.

[0059] In order to reduce the probability of the nasal exhaled waste gas entering the expandable tube 52, one method is to control the oxygen flow rate to configure the internal pressure of the oxygen temporary storage space 3 to be slightly greater than one atmosphere, so that the exhaled waste gas cannot enter the expandable tube 52 due to the pressure difference. Another method is to set the downstream end of the air guide plate 521 to Figure 6 and Figure 7 The waste gas exhaled from the nose encounters the curved sheet, and is diverted along the curved surface and diverted to other locations, such as from the waste gas port 6 at the lower end of the outer mask body 1. Figure 7 direction of the arrow.

[0060] Continue to refer to Figure 8 In order to protect the nasal mucosa and reduce the wear of the expandable tube 52 on the nasal mucosa, the connecting tube 51 and the air guide sheet 521 are connected by an elastic layer 522. When the oxygen supply is stopped, the elastic layer 522 automatically rebounds to restore the expandable tube 52 to a closed structure. When oxygen is supplied, the elastic layer 522 limits the movement distance of the air guide sheet 521 to prevent it from being over-opened, such as only opening 5 to 15 degrees. The elastic layer 522 is made of elastic material, such as an elastic rubber layer.

[0061] Exemplarily, the connecting tube 51 is a truncated cone structure, and its upstream port diameter is smaller than the downstream port diameter. When the oxygen supply is stopped, the elastic layer 522 automatically rebounds to restore the expandable tube 52 to the closed structure, and is embedded in the truncated cone structure to limit the expandable tube 52 so that the expandable tube 52 maintains the closed structure.

[0062] It should be noted that, in the above embodiments, an elastic rope can be provided on the outer mask body 1 to fix the oxygen mask on the patient's head.

[0063] In the above embodiment, carbon dioxide and water absorbing materials, such as alkali metal oxides, porous activated carbon, desiccant, etc., may also be provided at the exhaust port 6 to reduce the interference of exhaust gas with oxygen.

[0064] It should be noted that the component connection relationships not specifically mentioned in the present invention are assumed to adopt the existing technology. Since they do not involve the invention point and are widely used in the existing technology, the structural connection relationships are not described in detail.

[0065] It should be noted that when the present invention involves a numerical range, it should be understood that the two endpoints of each numerical range and any value between the two endpoints can be selected. Since the steps and methods used are the same as those in the embodiments, in order to avoid redundancy, the present invention describes a preferred embodiment. Although the preferred embodiments of the present invention have been described, once those skilled in the art know the basic inventive concept, they can make other changes and modifications to these embodiments, and these changes and modifications all fall within the scope of the present invention.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. If these modifications and variations of the present invention fall within the scope of the equivalent technology of the present invention, the present invention is also intended to include these modifications and variations.

Claims

1. An oxygen mask, characterized in that: It comprises an outer cover body (1) and an inner cover body (2), wherein the inner cover body (2) is located inside the outer cover body (1), and an oxygen temporary storage space (3) is formed between the inner cover body (2) and the outer cover body (1); The outer cover body (1) is provided with an oxygen inlet (11), and the oxygen inlet (11) is used to connect to an oxygen generator. The inner side of the inner cover body (2) is provided with a retractable jacket (4), and the retractable jacket (4) is used to clamp the nose of a human body. The retractable jacket (4) is in communication with the oxygen temporary storage space (3), and the oxygen inlet (11) is in communication with the oxygen temporary storage space (3); A ventilation component (5) is provided on the inner side of the inner layer cover body (2), one end of the ventilation component (5) is connected to the oxygen temporary storage space (3), and the other end of the ventilation component (5) is used to be placed in the human nasal cavity; The inner cover body (2) and / or the outer cover body (1) are provided with an exhaust gas outlet (6).

2. The oxygen breathing mask according to claim 1, characterized in that: The ventilation component (5) is a ventilation hose.

3. The oxygen breathing mask according to claim 2, characterized in that: The sum of the diameter of the ventilation hose and the diameter of the exhaust port (6) is 1 mm to 3 mm smaller than the diameter of the oxygen inlet (11).

4. The oxygen breathing mask according to claim 1, characterized in that: The ventilation assembly (5) comprises a connecting tube (51) and an expandable tube (52), both ends of the connecting tube (51) are open, one end of the connecting tube (51) is connected to the inner layer cover (2) and communicates with the oxygen temporary storage space (3), and the other end of the connecting tube (51) is located inside the inner layer cover (2) and is connected to the expandable tube (52); The expandable tube (52) comprises at least two air guide sheets (521), and all the air guide sheets (521) are connected to the connecting tube (51); The expandable tube (52) comprises a closed structure and an open structure, wherein the edges of the air guide plates (521) of the closed structure are in contact with each other, and the edges of the air guide plates (521) of the open structure are separated.

5. The oxygen breathing mask according to claim 4, characterized in that: The downstream end of the air guide sheet (521) is configured as a bent sheet.

6. The oxygen breathing mask according to claim 4, characterized in that: The connecting pipe (51) and the air guide sheet (521) are connected via an elastic layer (522).

7. The oxygen breathing mask according to claim 6, characterized in that: The elastic layer (522) is a sandalwood rubber layer.

8. The oxygen breathing mask according to claim 4, characterized in that: The connecting pipe (51) is a truncated cone-shaped structure, and the diameter of its upstream port is smaller than the diameter of its downstream port.

9. The oxygen breathing mask according to claim 1, characterized in that: The inner cover body (2) is provided with a pit (21), and the pit (21) is recessed from the outer side of the inner cover body (2) to the inner side; The retractable jacket (4) is arranged at the recess (21), and the retractable jacket (4) is located on the inner side of the inner cover body (2).

10. The oxygen breathing mask according to claim 1, characterized in that: The portion of the outer cover body (1) where the inner cover body (2) is not provided is a waste discharge space (31), and waste gas outlets (6) are provided on both the inner cover body (2) and the outer cover body (1) at the waste discharge space (31).

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