Oxygen mask body and oxygen mask

Abstract

The present application relates to oxygen mask technical field, disclose a kind of oxygen mask body and oxygen mask.Oxygen mask body includes mask body, face fitting edge and oxygen guide cylinder, mask body includes breathing cavity and the oral-nasal region configured to correspond with the mouth and nose of wearer;Face fitting edge is arranged in the outer peripheral edge of mask body;The air inlet end of oxygen guide cylinder is configured to be able to install oxygen joint, the air outlet end of oxygen guide cylinder is connected on the face mask wall outer surface of oral-nasal region and is communicated with breathing cavity, the cylinder mouth edge of air outlet end is lower than the face mask wall inner surface of oral-nasal region or flush with it in the direction of whole circle, so that the oxygen of four surrounding areas in oxygen guide cylinder diffuses at the cylinder mouth edge and continues to flow along the face mask wall inner surface to diffuse, effectively weaken the oxygen flow intensity directly flowing to the oral-nasal region of wearer, significantly reduce airflow oppression, so that oxygen can be evenly diffused in the mouth and nose of wearer and its surrounding area, improve the comfort of wearer use.

Description

Technical Field

[0001] This invention relates to the field of oxygen mask technology, specifically to an oxygen mask body and an oxygen mask. Background Technology

[0002] Existing oxygen masks typically include a mask body with an oxygen connector for connecting an oxygen delivery tube. The inner surface of the breathing chamber within the mask body has an oxygen guide tube extending into the breathing chamber. The oxygen connector contains an oxygen inlet channel, one end of which connects to the oxygen delivery tube and the other end to the oxygen guide tube. In this way, during use, oxygen can sequentially enter the breathing chamber through the oxygen delivery tube, the oxygen inlet channel in the oxygen connector, and the oxygen guide tube within the breathing chamber for the wearer's use.

[0003] However, the applicant's research found that in actual use, the wearer of the existing oxygen mask often feels a direct flow of oxygen into the mouth and nose area. Some wearers with sensitive skin will experience a more obvious feeling of air pressure, resulting in discomfort, which reduces the comfort of the oxygen mask to some extent. Summary of the Invention

[0004] To address the above technical problems, one objective of this invention is to provide a novel oxygen mask body that can significantly reduce the pressure of oxygen flow, allowing oxygen to diffuse evenly over the wearer's mouth, nose, and surrounding area, thereby improving the wearer's comfort.

[0005] To achieve the above objectives, the present invention provides an oxygen mask body, which includes a mask body, a face-fitting edge, and an oxygen delivery cylinder. The mask body includes a breathing chamber and a mouth and nose area configured to correspond to the wearer's mouth and nose. The face-fitting edge is located on the outer peripheral edge of the mask body. The inlet end of the oxygen delivery cylinder is configured to install an oxygen connector, and the outlet end of the oxygen delivery cylinder is connected to the outer surface of the mask wall in the mouth and nose area and communicates with the breathing chamber. The edge of the outlet end is lower than or flush with the inner surface of the mask wall in the mouth and nose area in the entire circumferential direction.

[0006] In this technical solution, the oxygen mask body includes an oxygen delivery cylinder. The outlet end of the oxygen delivery cylinder is connected to the outer surface of the mask wall in the mouth and nose area and communicates with the breathing chamber. Furthermore, the edge of the outlet end is lower than or flush with the inner surface of the mask wall in the mouth and nose area throughout the entire circumference. This allows oxygen flowing in the surrounding area of ​​the oxygen delivery cylinder to continue flowing and diffusing along the inner surface of the mask wall in the mouth and nose area at the edge of the outlet end. Thus, in actual use, oxygen enters the inlet end of the oxygen delivery cylinder through the oxygen connector and flows along the cylinder. When the oxygen in the surrounding area of ​​the oxygen delivery cylinder flows to the edge of the outlet end, it diffuses and continues to flow and diffuse along the inner surface of the mask wall in the mouth and nose area, ultimately forming an oxygen ring that essentially surrounds the wearer's mouth and nose area. This effectively reduces the intensity of the oxygen flow directly towards the wearer's mouth and nose area, significantly reducing the pressure sensation of the oxygen flow and allowing the oxygen to diffuse evenly over the wearer's mouth, nose, and surrounding area, improving the wearer's comfort.

[0007] Preferably, the inner surface of the edge of the nozzle is smoothly connected to the inner surface of the mask wall in the entire circumferential direction through an arc-shaped surface that bulges toward the breathing cavity.

[0008] Preferably, the opening of at least the outlet end of the oxygen delivery cylinder gradually widens and extends.

[0009] Preferably, a plurality of circumferentially spaced guide ribs are formed on the inner surface of the oxygen delivery cylinder and extend along the axial direction of the oxygen delivery cylinder, a guide zone is formed between adjacent guide ribs, and the guide ribs do not terminate before the inner surface of the mask wall.

[0010] More preferably, the circumferential spacing of the plurality of the guide zones is the same; and / or, the guide ribs are straight guide ribs or spiral guide ribs.

[0011] Preferably, the guide ribs are sheet-like, and at least a portion of the guide ribs gradually increase in height in the axial direction from the air inlet end to the air outlet end of the oxygen delivery cylinder; and / or, the inner surface of the guide ribs facing the center of the oxygen delivery cylinder is formed as an outwardly convex arc-shaped surface.

[0012] Preferably, the plurality of guide ribs are divided into a plurality of first guide ribs and a plurality of second guide ribs of equal number, wherein the height of the first guide ribs is greater than the height of the second guide ribs, and the first guide ribs and the second guide ribs are arranged alternately in sequence.

[0013] Preferably, the transition area of ​​the mask body between the mouth and nose area and the face-fitting edge is provided with a breathable structure. The breathable structure includes a plurality of open openings spaced apart in the circumferential direction of the mask body. The size of the plurality of open openings is configured such that the portion of the transition area between adjacent open openings forms a connecting strip. A reinforcing rib extending from the oxygen delivery cylinder to the face-fitting edge is formed on the inner surface of the connecting strip.

[0014] Furthermore, the present invention provides an oxygen mask comprising an oxygen connector and an oxygen mask body as described above. The oxygen connector includes a connector head and a baffle. The connector head has an oxygen inlet channel, and the baffle has a baffle concave surface. The baffle is connected to the outlet of the oxygen inlet channel, and the baffle concave surface faces the outlet of the oxygen inlet channel. The connector head is installed on the inlet end of the oxygen delivery cylinder, and the outlet of the oxygen inlet channel and the baffle are located inside the oxygen delivery cylinder.

[0015] In this technical solution, because the oxygen connector's baffle has a concave baffle surface, and the baffle is connected to the outlet of the oxygen inlet channel with the concave baffle facing the outlet of the oxygen inlet channel, and the outlet of the oxygen inlet channel and the baffle are located inside the oxygen guide cylinder, the oxygen flow from the outlet of the oxygen inlet channel, upon contacting the concave baffle, can utilize its own concave shape to diffuse the oxygen flow to the surrounding area, thereby weakening the oxygen flow intensity. This allows the oxygen flow to flow into the oxygen guide cylinder from around the concave baffle and mainly flow forward in the surrounding area of ​​the oxygen guide cylinder. Thus, as described above, due to the oxygen guide cylinder's... The edge of the outlet is lower than or flush with the inner surface of the mask wall in the mouth and nose area in the entire circumferential direction. Therefore, the oxygen flowing in the surrounding area of ​​the oxygen delivery cylinder continues to flow and diffuse along the inner surface of the mask wall in the mouth and nose area at the edge of the outlet, and finally forms an oxygen ring that basically surrounds the wearer's mouth and nose area. This can further effectively reduce the intensity of the oxygen flow directly to the wearer's mouth and nose area, thereby significantly reducing the pressure of the oxygen flow and allowing the oxygen to be evenly diffused in the wearer's mouth and nose and the surrounding area, improving the wearer's comfort.

[0016] Preferably, a plurality of circumferentially spaced baffles are formed on the concave surface of the deflector and a deflection space is formed between adjacent baffles; and / or, the connector is rotatably mounted on the air inlet end of the oxygen delivery cylinder.

[0017] Finally, the present invention provides an oxygen therapy device, which includes an oxygen supply device, an oxygen delivery pipe, and any of the above-described oxygen masks, wherein the oxygen supply device is connected to the oxygen inlet channel through the oxygen delivery pipe. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of an oxygen mask body provided according to one embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A three-dimensional structural diagram of the oxygen mask body from another perspective.

[0020] Figure 3 yes Figure 1 A partial cross-sectional enlarged structural diagram of one location of the oxygen mask body.

[0021] Figure 4 This is a schematic diagram of the structure of an oxygen mask body according to one embodiment of the present invention, in which guide ribs are arranged on the inner surface of the oxygen delivery cylinder.

[0022] Figure 5 A schematic diagram of a structure in an oxygen mask body according to an embodiment of the present invention, showing a guide rib arranged on the inner surface of an oxygen delivery cylinder.

[0023] Figure 6 This is a three-dimensional structural schematic diagram of an oxygen mask according to one embodiment of the present invention, wherein the oxygen connector is connected to an oxygen delivery tube.

[0024] Figure 7 This is a partial cross-sectional enlarged structural schematic diagram of a location of an oxygen mask according to one embodiment of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of an oxygen connector in an oxygen mask according to one embodiment of the present invention.

[0026] Figure 9 yes Figure 8 A three-dimensional structural diagram of the oxygen connector from another perspective.

[0027] Figure 10 This is a three-dimensional structural diagram of another oxygen connector in an oxygen mask provided according to one embodiment of the present invention.

[0028] Figure 11 yes Figure 10 A three-dimensional structural diagram of the oxygen connector from another perspective.

[0029] Figures 12a-12c The first flow of oxygen enters Figure 6 A simulation diagram of an oxygen mask.

[0030] Figures 13a-13c The second flow of oxygen enters. Figure 6 A simulation diagram of an oxygen mask.

[0031] Figures 14a-14c The third flow of oxygen enters. Figure 6 A simulation diagram of an oxygen mask.

[0032] Figures 15a-15c The fourth flow of oxygen enters. Figure 6 A simulation diagram of an oxygen mask.

[0033] Figures 16a-16c The fifth flow of oxygen enters. Figure 6 A simulation diagram of an oxygen mask.

[0034] Explanation of reference numerals in the attached figures

[0035] 1-Mask body, 2-Mouth and nose area, 3-Face contact edge, 4-Oxygen delivery cylinder, 5-Outlet end, 6-Outer surface of mask wall, 7-Cylinder opening edge, 8-Inner surface of mask wall, 9-Oxygen connector, 10-Open opening, 11-First guide rib, 12-Second guide rib, 13-Connecting strip, 14-Reinforcing rib, 15-Oxygen mask body, 16-Connector, 17-Baffle, 18-Oxygen inlet channel, 19-Baffle concave surface, 20-Baffle plate, 21-Oxygen delivery pipe, 22-Oxygen mask, 23-Arc-shaped surface, 24-Central support rod, 25-Support strip. Detailed Implementation

[0036] In the following detailed description of embodiments, reference is made to the accompanying drawings, which form part of this description. The drawings illustrate specific embodiments in which the invention is implemented by way of example. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the invention. It is understood that other embodiments may be utilized, and structural or logical changes may be made without departing from the scope of the invention. With respect to the drawings, directional terms such as "down," "up," "left," "right," etc., are used with reference to the orientation of the described drawings. Since components of embodiments of the invention can be implemented in various orientations, these directional terms are for illustrative purposes and not for limiting purposes. Therefore, the following specific embodiments are not intended to be limiting, and the scope of the invention is defined by the appended claims.

[0037] refer to Figure 1 , Figure 2 and Figure 3One object of the present invention is to provide an oxygen mask body 15, which includes a mask body 1, a face-fitting edge 3, and an oxygen delivery cylinder 4. The mask body 1 includes a breathing chamber and a mouth and nose area 2 configured to correspond to the wearer's mouth and nose. The face-fitting edge 3 is disposed on the outer peripheral edge of the mask body 1. The air inlet end of the oxygen delivery cylinder 4 is configured to install an oxygen connector 9 (that is, the oxygen mask body 15 can be a standalone product without the oxygen connector 9; in actual use, or when assembled to form an oxygen mask, the oxygen connector 9 can be installed on the air inlet end of the oxygen delivery cylinder 4). The air outlet end 5 of the oxygen delivery cylinder 4 is connected to the outer surface 6 of the mask wall of the mouth and nose area 2 and communicates with the breathing chamber. The edge 7 of the outlet end is lower than or flush with the inner surface 8 of the mask wall of the mouth and nose area 2 in the entire circumferential direction. That is, the edge 7 of the outlet end does not protrude from the inner surface 8 of the mask wall of the mouth and nose area 2 in the entire circumferential direction.

[0038] In this oxygen mask body 15, since the oxygen mask body 15 includes an oxygen delivery cylinder 4, the outlet end 5 of the oxygen delivery cylinder 4 is connected to the outer surface 6 of the mask wall in the mouth and nose area 2 and communicates with the breathing chamber, and the edge 7 of the outlet end 5 is lower than or flush with the inner surface 8 of the mask wall in the mouth and nose area 2 in the entire circumferential direction, this allows the oxygen flowing in the surrounding area inside the oxygen delivery cylinder 4 to continue to flow and diffuse along the inner surface 8 of the mask wall in the mouth and nose area 2 at the edge 7 of the outlet end 5. Thus, in actual use, the oxygen in the oxygen mask body 15 is delivered through the oxygen connector 9 (see reference). Figure 6 The oxygen enters the inlet of the oxygen delivery cylinder 4 and flows along the cylinder. When the oxygen in the surrounding area of ​​the oxygen delivery cylinder 4 flows to the edge 7 of the outlet 5, it spreads around and continues to flow along the inner surface 8 of the mask wall of the mouth and nose area 2, eventually forming an oxygen ring that basically surrounds the wearer's mouth and nose area 2. This can effectively reduce the intensity of the oxygen flow directly to the wearer's mouth and nose area 2, thereby significantly reducing the pressure of the oxygen flow and allowing the oxygen to be evenly diffused in the wearer's mouth and nose and the surrounding area, improving the wearer's comfort.

[0039] In one embodiment of the oxygen mask body 15, the included angle between the inner surface of the edge 7 of the cylinder opening and the inner surface 8 of the mask wall can be 180° for a flush transition connection, or the included angle between the inner surface of the edge 7 of the cylinder opening and the inner surface 8 of the mask wall can be between 180° and 270° to form a non-straight transition connection. This straight or non-straight transition connection allows oxygen in the surrounding area of ​​the oxygen delivery cylinder 4 to flow along the oxygen delivery cylinder 4 to the edge 7 of the cylinder opening at the outlet end 5, diffuse around and continue to flow along the inner surface 8 of the mask wall in the mouth and nose area 2 for further diffusion.

[0040] In other embodiments, in order to improve the smoothness of airflow while adapting to the extended contour of the mask body 1, reference is made to... Figure 1 and Figure 3 The inner surface of the nozzle edge 7 is smoothly connected to the inner surface 8 of the mask wall via an arc-shaped surface 23 protruding towards the breathing cavity. This allows oxygen from the surrounding area of ​​the oxygen delivery cylinder 4 to flow smoothly and steadily across the nozzle edge 7, changing direction to diffuse outwards while simultaneously flowing steadily onto the inner surface 8 of the mask wall in the mouth and nose area 2, where it continues to flow and diffuse. Therefore, the arc-shaped surface 23 between the inner surface of the nozzle edge 7 and the inner surface 8 of the mask wall allows oxygen to flow smoothly from the inner surface of the edge to the inner surface of the mask wall. Of course, the curvature of the arc-shaped surface 23 can be specifically selected according to actual needs.

[0041] Additionally, in the oxygen mask body 15, the oxygen delivery cylinder 4 can be a cylinder of uniform diameter, meaning that the inner diameter of the delivery cylinder 4 is the same from the inlet end to the outlet end 5. Alternatively, to facilitate the diffusion of oxygen flow, refer to... Figure 1 , Figure 2 and Figure 3 The oxygen delivery cylinder 4 has at least one outlet end 5 that gradually expands; for example, the outlet end 5 may be funnel-shaped. For instance, the oxygen delivery cylinder 4 may include a section of constant diameter cylinder and a gradually expanding section, or the oxygen delivery cylinder 4 may be integrally formed as a gradually expanding cylinder from the inlet end to the outlet end. In this way, oxygen in the surrounding area of ​​the oxygen delivery cylinder 4 diffuses more easily to the surroundings at the gradually expanding outlet. For example, it flows from the gradually expanding outlet onto the inner surface 8 of the mask wall through the arcuate surface 23.

[0042] Additionally, in the oxygen mask body 15, the oxygen delivery cylinder 4 can be a circular cylinder or a polygonal cylinder, and the sides of the polygonal cylinder can be connected by arc-shaped transition edges, as shown in the reference. Figure 4 The oxygen delivery cylinder 4 is a triangular cylinder, with adjacent sides smoothly connected by arc-shaped transition edges.

[0043] In addition, in one embodiment of the oxygen mask body 15, the inner surface of the oxygen delivery cylinder 4 can be entirely smooth and flat, for example, refer to Figure 1 The inner surface of the oxygen delivery cylinder 4 may not have guide ribs. Alternatively, in other embodiments, refer to... Figure 4 Multiple circumferentially spaced guide ribs extending along the axial direction of the oxygen delivery cylinder 4 are formed on the inner surface of the oxygen delivery cylinder 4. A guide zone is formed between adjacent guide ribs. The guide ribs terminate before the inner surface 8 of the mask wall, that is, the guide ribs do not protrude from the inner surface 8 of the mask wall. In this way, each guide rib separates the oxygen flow in the surrounding area of ​​the oxygen delivery cylinder 4, so that the oxygen flow flows forward in each guide zone. This separation effect of the guide ribs can further reduce the intensity of the oxygen flow.

[0044] Additionally, the guide ribs can be configured according to actual needs, resulting in different circumferential spacing between multiple guide zones. Alternatively, some guide zones can have different circumferential spacing, while others have the same circumferential spacing. In one embodiment, the circumferential spacing of all guide zones is the same, ensuring that the guiding area of ​​each zone is approximately the same. This results in a more uniform oxygen flow around the oxygen cylinder 4.

[0045] Furthermore, the guide ribs in the oxygen mask body can have various shapes, such as triangular or trapezoidal, or sheet-like. Additionally, in the axial direction from the inlet end to the outlet end of the oxygen delivery cylinder 4 (e.g., Figure 5 (As indicated by the arrow in the image), the height of at least some of the guide ribs gradually increases, as shown in the reference. Figure 5 In this way, because the guide ribs are relatively high at the outlet, the depth of the guide zone is relatively large. This can better separate and guide the oxygen flow, further weaken the oxygen flow intensity, and make the oxygen flow in each guide zone more likely to flow along the inner surface 8 of the mask wall.

[0046] In addition, such as Figure 5 As shown, the inner surface of the guide ribs facing the center of the oxygen cylinder is formed into a convex arc shape, which is more conducive to guiding the oxygen flow forward. For example, the inner surface of the axially straight, sheet-like guide ribs facing the center of the oxygen cylinder is formed into a convex arc shape.

[0047] Furthermore, the heights of the various guide ribs can be the same or different. For example, in one embodiment, refer to... Figure 4 The multiple guide ribs are divided into an equal number of first guide ribs 11 and a equal number of second guide ribs 12. The height of the first guide ribs 11 is greater than the height of the second guide ribs 12. The first guide ribs 11 and the second guide ribs 12 are arranged alternately. For example, in Figure 4 In the middle, three first guide ribs 11 and three second guide ribs 12 are arranged alternately. In this way, the three first guide ribs 11 can effectively separate the oxygen flow in the surrounding area of ​​the oxygen cylinder 4, and between adjacent first guide ribs 11, one second guide rib 12 can further separate the oxygen flow between adjacent first guide ribs 11. Of course, since the height of the second guide rib 12 is small, the oxygen flow separated by the second guide rib 12 can be pulled to each other on the surface to flow forward quickly.

[0048] Furthermore, the guide ribs can have various extension methods. For example, they can be straight guide ribs extending in a straight line, spiral guide ribs extending in a spiral shape, or non-spiral guide ribs extending in a curve. For example, in Figure 4In the middle, the guide ribs are straight. Additionally, the spiral guide ribs can guide the oxygen flow in the surrounding area of ​​the oxygen delivery cylinder 4, causing the oxygen flow to spiral forward, thereby improving the uniformity of the oxygen flow. Furthermore, the oxygen flow can flow in a certain swirling direction onto the inner surface 8 of the mask wall when leaving the cylinder opening edge 7; for example, it can flow in a certain swirling direction over the arc-shaped surface 23 and into the inner surface 8 of the mask wall. This can further improve the diffusion of the oxygen flow, thereby improving the uniformity of the mixing between the oxygen flow and the air entering the breathing chamber.

[0049] Additionally, refer to Figure 1 , Figure 2 and Figure 3 The mask body 1 has a breathable structure in the transition area between the mouth and nose area 2 and the face-fitting edge 3. The breathable structure allows the wearer's exhaled air to escape into the external environment, and also allows air from the external environment to enter the breathing cavity. This allows the wearer to have a feeling similar to natural breathing when wearing the oxygen mask body, without causing a feeling of breathing difficulty.

[0050] Of course, it should be noted that breathable structures can have various types. For example, one type of breathable structure can consist of multiple air holes clustered together on a portion of the transition area. The number, size, and shape of these air holes can be customized according to specific requirements. Alternatively, another type of breathable structure... (See reference...) Figure 1 and Figure 2 The breathable structure includes a plurality of openings 10 spaced apart in the circumferential direction of the mask body 1. The dimensions of the plurality of openings 10 are configured such that the transition area between adjacent openings 10 forms a connecting strip 13. A reinforcing rib 14 extending from the oxygen delivery cylinder 4 to the face-fitting edge 3 is formed on the inner surface of the connecting strip 13. That is, the openings 10 can have a large size. Furthermore, the number and shape of the openings 10 can be set according to requirements. For example, the number of openings 10 can be 3, 4, or 5, and the shape can be circular, square, or elliptical. For example, the shape of each opening 10 can be as follows: Figure 1 , Figure 2 and Figure 6 As shown in the diagram. The opening 10 allows the wearer to speak and drink naturally. For example, the opening 10 at the bottom of the mask body 1 allows the wearer to drink directly from a cup, or allows a straw to pass through, so that the wearer can drink through a straw.

[0051] Alternatively, the oxygen mask body 15 can be made of a soft material, allowing it to deform to adapt to different wearers' face shapes. Or, the oxygen mask body 15 can be made of a rigid material; in this case, to better suit different wearers, the face-fitting edge 3 can be flexible, adapting to different wearers' face shapes.

[0052] Another object of the present invention is to provide an oxygen mask 22, see reference. Figure 6 and Figure 7 The oxygen mask 22 includes an oxygen connector 9 and an oxygen mask body 15 as described above. The oxygen connector 9 includes a connector 16 and a baffle 17. The connector has an oxygen inlet channel 18, and the baffle 17 has a baffle concave surface 19. The baffle 17 is connected to the outlet of the oxygen inlet channel 18, and the baffle concave surface 19 faces the outlet of the oxygen inlet channel 18. The connector 16 is installed on the inlet end of the oxygen delivery cylinder 4, and the outlet of the oxygen inlet channel 18 and the baffle 17 are located inside the oxygen delivery cylinder 4.

[0053] In this oxygen mask 22, since the baffle 17 of the oxygen connector 9 has a baffle concave surface 19, the baffle 17 is connected to the outlet of the oxygen inlet channel 18 and the baffle concave surface 19 faces the outlet of the oxygen inlet channel 18. Furthermore, the outlet of the oxygen inlet channel 18 and the baffle 17 are located inside the oxygen delivery cylinder 4. This allows the oxygen flow from the outlet of the oxygen inlet channel 18 to contact the baffle concave surface 19. The baffle concave surface 19, with its concave shape, diffuses the oxygen flow to the surrounding area to weaken the oxygen flow intensity. This allows the oxygen flow to flow from around the baffle concave surface 19 into the oxygen delivery cylinder 4 and primarily flow forward in the surrounding area of ​​the oxygen delivery cylinder 4. For example, see reference... Figure 12a The green portion represents the oxygen flow. As described above, since the edge 7 of the outlet 5 of the oxygen delivery cylinder 4 is lower than or flush with the inner surface 8 of the mask wall of the mouth and nose area 2 in the entire circumferential direction, that is, it does not protrude from the inner surface 8 of the mask wall of the mouth and nose area 2, the oxygen flowing in the surrounding area of ​​the oxygen delivery cylinder 4 continues to flow and diffuse along the inner surface 8 of the mask wall of the mouth and nose area 2 at the edge 7 of the outlet 5, and finally forms an oxygen ring that basically surrounds the wearer's mouth and nose area. This can further effectively reduce the intensity of the oxygen flow directly to the wearer's mouth and nose area, thereby significantly reducing the pressure of the oxygen flow and allowing the oxygen to diffuse evenly in the wearer's mouth and nose and the surrounding area, improving the wearer's comfort.

[0054] Furthermore, in this oxygen mask, the shape of the deflector 17 can be umbrella-shaped, or bowl-shaped, and the cross-section can be circular or polygonal. Additionally, the deflector concave surface 19 of the deflector 17 may not contain any baffles 20 of any shape. Alternatively, refer to... Figure 8 and Figure 9 One embodiment described above and Figure 10 and Figure 11 In another embodiment shown, a plurality of circumferentially spaced baffles 20 are formed on the baffle concave surface 19, with baffle spaces formed between adjacent baffles 20. Thus, upon contact with the baffle concave surface 19, the oxygen flow is divided by the baffles 20 into multiple smaller oxygen flows that are baffled within the baffle spaces. These smaller oxygen flows flow along the baffle spaces towards the edges and enters the surrounding area of ​​the oxygen delivery cylinder 4. Therefore, the baffles 20 can effectively disperse the oxygen flow entering through the oxygen inlet channel 18, further reducing the intensity of the oxygen flow. Furthermore, the baffles 20 can be circumferentially spaced evenly or non-uniformly distributed.

[0055] Furthermore, the oxygen connector 9 in this oxygen mask can be of various types. For example, in one type, refer to Figure 8 and Figure 9 A central support rod 24 can extend from the center of the internal channel of the connector 16. An annular oxygen inlet channel 18 is formed between the inner surface of the internal channel of the connector 16 and the outer surface of the central support rod 24. A baffle 17 is connected to the extended end of the central support rod 24, and multiple baffles 20 are evenly spaced circumferentially on the baffle concave surface 19 of the baffle 17. Alternatively, refer to... Figure 10 and Figure 11 Multiple circumferentially spaced support bars 25 are axially arranged on the outlet end face of the oxygen inlet channel 18. The edge of the baffle 17 is connected to the multiple support bars 25. Since the multiple support bars 25 are arranged on the outlet end face of the oxygen inlet channel 18, the space occupied by the oxygen inlet channel 18 can be avoided, making it easier for oxygen to flow within the oxygen inlet channel 18. In addition, when the oxygen flows out from the outlet end of the oxygen inlet channel 18, some of the oxygen diffuses to the surroundings but can be separated by the multiple support bars 25, thus passing through the gaps between adjacent support bars 25. This can further reduce the intensity of the oxygen flow. Similarly, multiple baffles 20 are circumferentially spaced evenly arranged on the baffle concave surface 19 of the baffle 17. Of course, in addition to Figure 8 and Figure 9 The illustrated embodiments and Figure 10 and Figure 11 In the embodiment shown, the baffle 17 can also be disposed on the connector 16 in other ways. For example, a connecting strip is disposed on the outer surface of the connector 16, and the outer surface of the baffle 17 is connected to the connecting strip, which can also achieve a fixed connection of the baffle 17.

[0056] Additionally, in this oxygen mask 22, the connector 16 can be fixedly mounted on the air inlet end of the oxygen delivery tube 4. Alternatively, the connector 16 can be rotatably mounted on the air inlet end of the oxygen delivery tube 4, allowing the wearer to adjust the position of the oxygen mask 22 relative to the oxygen delivery tube 21 according to their needs. For example, when the wearer needs to lie down, they can rotate the connector 16 to adjust the relative position between the oxygen mask 22 and the oxygen delivery tube 21, thereby improving comfort.

[0057] In addition, the present invention also provides an oxygen therapy device, which includes an oxygen supply device (not shown), an oxygen delivery tube 21 and an oxygen mask 22 as described above, wherein the oxygen supply device is connected to the oxygen inlet channel 18 through the oxygen delivery tube 21 and can provide an oxygen flow.

[0058] Figures 12a-16c For different flow rates of oxygen Figure 6 A simulation diagram of an oxygen mask. It can be seen that, at different flow rates, when the oxygen flow entering from the oxygen inlet channel 18 contacts the baffle concave surface 19 of the baffle 17, the baffle concave surface 19 diffuses the oxygen flow to the surrounding area to weaken the oxygen flow intensity. This causes the oxygen flow to flow from around the baffle concave surface 19 into the oxygen guide cylinder 4 and mainly flow forward in the surrounding area of ​​the oxygen guide cylinder 4. For example, refer to... Figure 12a The green portion represents the oxygen flow. At this point, because the edge 7 of the outlet 5 of the oxygen delivery cylinder 4 is lower than or flush with the inner surface 8 of the mask wall in the mouth and nose area 2 along the entire circumferential direction, the oxygen flowing in the surrounding area of ​​the oxygen delivery cylinder 4 continues to diffuse outwards along the inner surface 8 of the mask wall in the mouth and nose area 2 at the edge 7 of the outlet 5. For example, refer to... Figure 12c , Figure 13c , Figure 14c , Figure 15c and Figure 16c In the diagram, the green section shows the oxygen flow that will follow the inner surface 8 of the mask wall, for example, as shown in the reference diagram. Figures 12b-16b The red section shows the oxygen flow flowing along the inner surface 8 of the mask wall, which ultimately forms an oxygen ring that basically surrounds the wearer's mouth and nose area. This can further effectively reduce the intensity of the oxygen flow that flows directly to the wearer's mouth and nose area, thereby significantly reducing the pressure of the oxygen flow and allowing the oxygen to be evenly diffused in the wearer's mouth and nose and the surrounding area, improving the wearer's comfort.

[0059] Those skilled in the art will understand that the above embodiments are exemplary and not restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on a study of the drawings, specification, and claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. No reference numerals in the claims should be construed as limiting the scope of protection. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. An oxygen mask body, characterized in that, include: The mask body (1) includes a breathing cavity and a mouth and nose area (2) configured to correspond to the mouth and nose of the wearer. Face-fitting edge (3), the face-fitting edge (3) is set on the outer peripheral edge of the mask body (1), the face-fitting edge (3) can be deformed to adapt to the changes in the face shape of different wearers; An oxygen delivery cylinder (4) is configured to have an oxygen connector (9) installed at its inlet end and an outlet end (5) connected to the outer surface (6) of the mask wall in the mouth and nose area (2) and communicating with the breathing chamber. The internal space of the oxygen delivery cylinder (4) is configured to accommodate a baffle (17) for the oxygen connector (9). The edge (7) of the outlet end is lower than or flush with the inner surface (8) of the mask wall in the mouth and nose area (2) in the whole circumference direction. The oxygen guide tube (4) has a plurality of circumferentially spaced guide ribs that extend along the axial direction of the oxygen guide tube on its inner surface, and a guide zone is formed between adjacent guide ribs; the plurality of guide ribs are divided into a plurality of first guide ribs (11) and a plurality of second guide ribs (12) of the same number, the height of the first guide ribs (11) is greater than the height of the second guide ribs (12), and the first guide ribs (11) and the second guide ribs (12) are arranged alternately in sequence.

2. The oxygen mask body according to claim 1, characterized in that, The inner surface of the edge of the cylinder (7) is smoothly connected to the inner surface of the mask wall (8) in the whole circumference direction through an arc-shaped surface protruding towards the breathing cavity.

3. The oxygen mask body according to claim 1, characterized in that, The opening of at least the outlet end (5) of the oxygen delivery cylinder (4) gradually widens and extends.

4. The oxygen mask body according to any one of claims 1-3, characterized in that, The guide rib terminates before the inner surface (8) of the mask wall.

5. The oxygen mask body according to claim 4, characterized in that, The circumferential spacing of the multiple flow guiding zones is the same; and / or, the flow guiding ribs are straight flow guiding ribs or spiral flow guiding ribs.

6. The oxygen mask body according to claim 4, characterized in that, The guide ribs are sheet-shaped, and in the axial direction from the air inlet end to the air outlet end of the oxygen guide cylinder (4), at least a portion of the height of the guide ribs gradually increases; And / or, The inner surface of the guide rib facing the center of the oxygen cylinder is formed into an outwardly convex arc shape.

7. The oxygen mask body according to claim 1, characterized in that, The mask body (1) has a breathable structure in the transition area between the mouth and nose area (2) and the face-fitting edge (3). The breathable structure includes a plurality of open openings (10) spaced apart in the circumferential direction of the mask body (1). The size of the plurality of open openings (10) is configured such that the portion of the transition area between adjacent open openings (10) forms a connecting strip (13). A reinforcing rib (14) extending from the oxygen delivery cylinder (4) to the face-fitting edge (3) is formed on the inner surface of the connecting strip (13).

8. An oxygen mask, characterized in that, Includes an oxygen connector (9) and an oxygen mask body (15) as described in any one of claims 1-7, wherein, The oxygen connector (9) includes a connector (16) and a baffle (17). The connector has an oxygen inlet channel (18), and the baffle (17) has a baffle concave surface (19). The baffle (17) is connected to the outlet of the oxygen inlet channel (18), and the baffle concave surface (19) faces the outlet of the oxygen inlet channel (18). The connector (16) is installed on the air inlet end of the oxygen delivery cylinder (4), and the outlet of the oxygen inlet channel (18) and the baffle (17) are located inside the oxygen delivery cylinder (4).

9. The oxygen mask according to claim 8, characterized in that, Multiple circumferentially spaced baffles (20) are formed on the deflector concave surface (19), and a deflector space is formed between adjacent baffles (20); and / or, the connector (16) is rotatably mounted on the air inlet end of the oxygen delivery cylinder (4).

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