Breathing mask

Abstract

The breathing mask comprises a mask body, an air inlet and an air outlet, when the mask body covers a human face, a closed space is defined to form a mask cavity, and the air inlet and the air outlet are formed in the mask body; the first check valve is arranged at the air inlet so as to prevent exhaled air from being mixed into the oxygen pipeline; the second check valve is arranged at the air outlet so as to prevent air outside the cover cavity from being sucked into the cover cavity; and the second check valve and the first check valve are the same in structure and opposite in mounting direction. According to the scheme, the air inlet and the air outlet are separately formed in the breathing mask, the design of the non-return piece is enhanced, and therefore the problem that in the prior art, the breathing mask cannot provide high-flow pure oxygen for a patient is solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical supplies, in particular to a breathing mask. Background Art

[0002] A breathing mask is a medical product, and its main purpose is to supplement oxygen to patients in clinical medicine to relieve symptoms of hypoxia, prevent and treat hypoxemia, etc. However, since the existing breathing masks design the air inlet and outlet on the same pipe, and only set a soft rubber diaphragm at the air inlet as a backflow prevention member, such a structural design cannot meet the use requirements of the breathing mask, because the air inlet and the air outlet are set on the same pipe, although the positions are different, it is still easy to cause oxygen and air to mix, so that high-flow pure oxygen cannot be provided to patients; the soft rubber diaphragm is used as a backflow prevention member, which has insufficient pressure resistance and is easily penetrated by the exhaled gas, so that the backflow prevention effect cannot be achieved, and the exhaled gas is mixed into the oxygen pipeline. Summary of the invention

[0003] In view of this, the present invention provides a breathing mask, which solves the problem in the prior art that the breathing mask cannot provide high-flow pure oxygen to patients by separately arranging the air inlet and the air outlet on the breathing mask and strengthening the design of the anti-return component.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A breathing mask comprises a mask body, an air inlet and an air outlet. When the mask body is placed on a person's face, it forms a closed space to form a mask cavity. The invention is characterized in that the air inlet and the air outlet are respectively arranged on the mask body; the mask body also comprises: a first check valve, which is arranged at the air inlet to block the exhaled gas from mixing into the oxygen pipeline; a second check valve, which is arranged at the air outlet to block the air outside the mask cavity from being sucked into the mask cavity; and the second check valve has the same structure as the first check valve, but is installed in the opposite direction.

[0005] Furthermore, the first check valve includes a valve body, a valve stem and a fixing frame, the valve stem is connected to the middle part of the bottom surface of the valve body, the fixing frame is mounted in the air inlet, and the valve body is fixed to the fixing frame through the valve stem, so that the valve body can be checked in the air inlet direction.

[0006] Furthermore, the valve body has a truncated cone structure with a thick center and thin edges.

[0007] Furthermore, the valve stem also includes an undercut, which is arranged at the middle section of the valve stem to be adapted to fasten the valve body to fit the surface of the mask body.

[0008] Furthermore, the valve body and the valve stem are integrally formed of a flexible material.

[0009] Further, the fixing bracket includes a plurality of spokes and fixing holes. The spokes are evenly distributed around the fixing holes at equal angles and are connected to the inner surface of the air inlet. The valve stem passes through the fixing hole and extends into the oxygen pipeline.

[0010] Further, the air outlet includes a first air outlet and a second air outlet, and the first air outlet and the second air outlet are respectively arranged at lower positions on both sides of the air inlet.

[0011] Further, a sealing airbag is provided around the mask body.

[0012] Further, an inflation port is provided on the sealing airbag.

[0013] The beneficial effects of the present invention are as follows: By separately arranging the air inlet and the air outlet on the mask body, when in use, the exhalation and inhalation pipelines of the patient are separated, avoiding the mixing of the exhalation pipeline and the inhalation pipeline in the prior art, which results in the mixing of air into pure oxygen and cannot meet the functional requirement of providing high-flow pure oxygen for the patient.

[0014] By respectively arranging check valves at the air inlet and the air outlet, the exhaled gas is blocked from mixing into the oxygen pipeline and the air outside the mask cavity is blocked from being inhaled into the mask cavity, further increasing the oxygen concentration in the mask cavity.

[0015] Since the first check valve arranged at the air inlet and the second check valve arranged at the air outlet have the same structure and opposite installation directions, only one set of check valve production molds needs to be provided, reducing the design and production costs.

[0016] By designing the valve body into a frustum-shaped structure with a thick center and a thin edge, the compressive strength of the valve body is enhanced and the check valve effect is improved.

[0017] A fixing bracket is arranged at the air inlet. Through the fixing hole, the valve body is fixed at the center of the air inlet, so that when inhaling, oxygen flows evenly from the edge of the valve body, making the oxygen flow more stable. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0019] Figure 1 It is a three-dimensional view of the breathing mask of the first embodiment of the present invention from an angle.

[0020] Figure 2 It is a longitudinal sectional view of the breathing mask of the first embodiment of the present invention.

[0021] Figure 3This is an exploded view of the components of the breathing mask according to the first embodiment of the present invention, with the axis of the air inlet as the reference.

[0022] Figure 4 This is an exploded and enlarged schematic diagram of the first check valve of the breathing mask according to the first embodiment of the present invention.

[0023] Reference numerals: Respiratory masks - 100; Mask body-10; air inlet-20; air outlet-30; First check valve-40; valve body-41; valve stem-42; undercut-421; Fixing frame-43; Spoke-431; Fixing hole-432; Second check valve -50; Sealed airbag-60; inflation port-61; airbag check valve-62; Cover cavity -70. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] Please refer to Figures 1 to 3 The breathing mask 100 includes a mask body 10, an air inlet 20, two air outlets 30, a first check valve 40, two second check valves 50, a closed air bag 60, and a mask cavity 70 formed by forming a closed space when the mask body is covered on a human face. The air inlet 20 and the air outlet 30 are respectively arranged on the mask body 10; the first check valve 40 is arranged at the air inlet 20 to block the exhaled gas from mixing into the oxygen pipeline. The second check valve 50 is arranged at the air outlet 30 to block the air outside the mask cavity 70 from being sucked into the mask cavity 70; the second check valve 50 has the same structure as the first check valve 40, but is installed in the opposite direction. Therefore, in order to avoid redundancy, the following mainly takes the structure and installation method of the first check valve 40 as an example to explain the technical solution of the check valve of this embodiment.

[0026] The mask body 10 is a bowl-shaped structure, and when the mask is placed on a person's face, the mouth and nose can be stored together in the mask cavity 70. The sealed airbag 60 is arranged on the outer periphery of the mask body 10; the sealed airbag 60 also includes an inflation port 61 and an airbag check valve 62, and the inflation port 61 is arranged at the sealed airbag 60 near the chin. The airbag check valve 62 is arranged inside the inflation port 61, so that the gas filled into the sealed airbag 60 will not leak. By inflating the inflation port 61, the sealed airbag 60 can form an airbag ring with a nose pad.

[0027] The air inlet 20 is arranged at the lower middle part of the mask body 10, which is exactly the position where the nostrils are mapped on the mask body 10 when the mask body 10 is covered on the face of a person. This allows oxygen to be inhaled into the body of the patient in the shortest distance when it enters the mask cavity 70 through the oxygen pipeline.

[0028] The air outlet 30 includes a first air outlet and a second air outlet, and the first air outlet and the second air outlet are respectively arranged at the lower positions on both sides of the air inlet 20. This position is exactly the position where the mouth is mapped to the mask body 10 when the mask body 10 is covered on the face of a person. This allows the patient's exhaled gas to be discharged from the mask cavity 70 in the shortest distance.

[0029] Please refer to Figure 4 The first check valve 40 includes a valve body 41, a valve stem 42 and a fixing frame 43. The valve stem 42 is connected to the middle of the bottom surface of the valve body 41. The fixing frame 43 is mounted in the air inlet 20. The valve body 41 is fixed to the fixing frame 43 through the valve stem 42, so that the valve body 41 can be checked in the air inlet direction. Among them, the valve body 41 presents a truncated cone structure with a thick center and thin edges. The valve stem 42 also includes an undercut 421, which is arranged in the middle section of the valve stem 42 to adapt to fastening the valve body 41 to fit the surface of the mask body 10. The valve body 41 and the valve stem 42 are integrally formed of a flexible material. The flexible material can be a sealing material with elasticity such as silicone, rubber, TPR, etc.

[0030] In addition, the fixing frame 43 includes a plurality of spokes 431 and a fixing hole 432, and the spokes 431 are uniformly distributed around the fixing hole 432 at equal angles and connected to the inner surface of the air inlet 20. The valve stem 42 extends into the oxygen pipeline through the fixing hole 432. The number of the spokes 431 can be two or more, and a better solution is three. The fixing hole 432 is arranged on the central axis of the air inlet 20 through the spokes 431, so that when installed, the valve body 41 is arranged at the center of the air inlet 20 through the valve stem 42 passing through the fixing hole 432, so that the oxygen supply air flow flows uniformly from the edge of the valve body 41 of the first check valve 40 into the cover cavity 70 through the oxygen pipeline, thereby ensuring that the flow rate of the oxygen supply air flow is more stable.

[0031] In addition, for the second check valve 50, its structure is the same as that of the first check valve 40, and it also includes a valve body, a valve stem and a fixing bracket; the fixing bracket is arranged at the air outlet, and the valve body extends into the mask cavity 70 from outside the mask body 10 through the valve stem, so that the valve body prevents reverse flow in the air outlet direction, that is, it blocks the reverse flow effect of the air outside the mask cavity 70 from being inhaled into the mask cavity 70. At the same time, based on the combined action of the first check valve 40, the exhaled gas of the patient cannot flow into the oxygen pipeline through the first check valve 40, thereby avoiding the mixing of the exhaled gas in the oxygen pipeline and resulting in a decrease in the oxygen concentration.

[0032] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and alterations made by those skilled in the art that do not depart from the design spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A breathing mask, comprising a mask body, an air inlet and an air outlet. When the mask body covers the human face, a closed space is formed to form a mask cavity, and it is characterized in that, The air inlet and the air outlet are respectively arranged on the mask body; and further comprising: a first check valve, the first check valve being arranged at the air inlet to prevent the exhaled gas from mixing into the oxygen pipeline; a second check valve, the second check valve being arranged at the air outlet to prevent the air outside the cover cavity from being sucked into the cover cavity; and The second check valve has the same structure as the first check valve, but is installed in opposite directions.

2. The breathing mask according to claim 1, characterized in that: The first check valve includes a valve body, a valve stem and a fixing frame, the valve stem is connected to the middle of the bottom surface of the valve body, the fixing frame is mounted in the air inlet, and the valve body is fixed to the fixing frame through the valve stem, so that the valve body can be checked in the air inlet direction.

3. The breathing mask according to claim 2, characterized in that: The valve body presents a truncated cone structure with a thick center and thin edges.

4. The breathing mask according to claim 2, characterized in that: The valve stem also includes an undercut, which is arranged at the middle section of the valve stem to be adapted to fasten the valve body to fit the surface of the mask body.

5. The breathing mask according to claim 2, wherein: The valve body and the valve stem are integrally formed of a flexible material.

6. The breathing mask according to claim 2, wherein: The fixing frame includes a plurality of spokes and fixing holes, wherein the spokes are evenly distributed around the fixing holes at equal angles and connected to the inner surface of the air inlet, and the valve stem passes through the fixing holes and extends into the oxygen pipeline.

7. The breathing mask according to claim 1, characterized in that: The air outlet comprises a first air outlet and a second air outlet, and the first air outlet and the second air outlet are respectively arranged at lower positions on both sides of the air inlet.

8. The breathing mask according to claim 1, characterized in that: A sealed air bag is arranged around the mask body.

9. The breathing mask according to claim 8, characterized in that: The sealed airbag is provided with an inflation port.

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