WO2023072219A1

WO2023072219A1 - Oxygen face mask body and oxygen face mask

Info

Publication number: WO2023072219A1
Application number: PCT/CN2022/128086
Authority: WO
Inventors: 朱越; 冯军; 朱鹏; 冯威如
Original assignee: 北京奥臻医疗科技有限公司
Priority date: 2021-10-28
Filing date: 2022-10-27
Publication date: 2023-05-04

Abstract

An oxygen face mask body and an oxygen face mask. The oxygen face mask body comprises a face mask body (1), a face-fitting edge (3), and an oxygen guide cylinder (4), wherein the face mask body (1) comprises a breathing cavity and a mouth-and-nose region (2) configured to correspond to the mouth and nose of a wearer; the face-fitting edge (3) is arranged at a peripheral edge of the face mask body; and an air intake end of the oxygen guide cylinder (4) is configured to be capable of mounting an oxygen connector (9), an air output end of the oxygen guide cylinder (4) is connected to a face mask wall outer surface (6) of the mouth-and-nose region (2) and is in communication with the breathing cavity, and a cylinder opening edge (7) of the air output end is lower than or flush with a face mask wall inner surface (8) of the mouth-and-nose region (2) in a whole circle direction, so that oxygen in a peripheral area in the oxygen guide cylinder (4) diffuses all around at the cylinder opening edge (7) and continues to flow along the face mask wall inner surface (8) to diffuse, thereby effectively reducing the intensity of an oxygen flow directly flowing to the mouth-and-nose area (2) of the wearer, significantly reducing the sense of pressure of the oxygen flow, allowing the oxygen to uniformly diffuse to the mouth and nose of the wearer and the surrounding area thereof, and increasing the usage comfort degree of the wearer.

Description

Oxygen mask body and oxygen mask

technical field

The present invention relates to the technical field of oxygen masks, in particular to an oxygen mask body and the oxygen mask.

Background technique

Existing oxygen masks usually include a mask body, and the mask body is provided with an oxygen connector, which is used to connect an oxygen delivery tube, wherein the inner surface of the breathing chamber in the mask body has an oxygen guide cylinder stretching out into the breathing chamber, An oxygen inlet channel is arranged in the oxygen joint, and one end of the oxygen inlet channel communicates with the oxygen delivery tube and the other end communicates with the oxygen guide cylinder. In this way, when in use, oxygen can enter the breathing chamber through the oxygen delivery tube, the oxygen inlet channel in the oxygen joint and the oxygen guide cylinder in the breathing chamber in order for the wearer to use.

However, the applicant has found in actual research that in actual use of this existing oxygen mask, the wearer often has a feeling of oxygen flow directly to the mouth and nose area, and some wearers with sensitive skin will have a more obvious Airflow oppressive, resulting in discomfort, which reduces the comfort of oxygen masks to a certain extent.

Contents of the invention

In order to solve the above technical problems, an object of the present invention is to propose a new oxygen mask body, which can significantly reduce the air flow pressure of oxygen, so that oxygen can be evenly diffused in and around the wearer's nose and mouth area, thereby improving the comfort of the wearer.

In order to achieve the above object, the present invention provides an oxygen mask body. The oxygen mask body includes a mask body, a face fitting edge and an oxygen guide cylinder, wherein the mask body includes a breathing chamber and is configured to correspond to the wearer's nose and mouth. The mouth and nose area; the face fitting edge is arranged on the outer peripheral edge of the mask body; the inlet end of the oxygen guide cylinder is configured to install an oxygen connector, and the outlet end of the oxygen guide cylinder is connected to the mouth and nose The outer surface of the mask wall of the area is connected with the breathing cavity, and the mouth edge of the air outlet is lower than or flush with the inner surface of the mask wall of the mouth and nose area in the whole circle direction.

In this technical solution, since the oxygen mask body includes an oxygen guide cylinder, the outlet end of the oxygen guide cylinder is connected to the outer surface of the mask wall in the mouth and nose area and communicates with the breathing chamber, and the edge of the mouth of the outlet end is lower than The inner surface of the mask wall in the mouth and nose area is or is flush with it, which allows the oxygen flowing in the surrounding area in the oxygen guide cylinder to continue to flow around the inner surface of the mask wall in the mouth and nose area to diffuse at the mouth edge of the outlet end. In this way, in the actual use of the oxygen mask body, oxygen enters the intake end of the oxygen guide cylinder through the oxygen connector, and flows along the oxygen guide cylinder, while the oxygen in the surrounding area of the oxygen guide cylinder flows along the oxygen guide cylinder to the outlet. When it is at the edge of the mouth of the mouth of the wearer, it will diffuse around and continue to flow along the inner surface of the mask wall in the mouth and nose area to diffuse, and finally form an oxygen circle that basically surrounds the wearer's mouth and nose area, which can effectively weaken the direct flow to the wearer's mouth. The intensity of oxygen flow in the nasal area can significantly reduce the pressure of oxygen air flow, so that oxygen can be evenly diffused in the wearer's mouth, nose and surrounding areas, improving the comfort of the wearer.

Preferably, the inner surface of the rim of the mouthpiece is smoothly connected with the inner surface of the mask wall through an arc-shaped surface that protrudes toward the breathing cavity in the whole circle direction.

Preferably, at least the mouth of the gas outlet end of the oxygen guide cylinder expands gradually.

Preferably, the inner surface of the oxygen guide cylinder is formed with a plurality of flow guide ribs arranged at intervals in the circumferential direction and extending along the axial direction of the oxygen guide cylinder, and a flow guide area is formed between adjacent flow guide ribs , the ribs do not terminate before the inner surface of the mask wall.

More preferably, the circumferential spacing of the plurality of diversion regions is the same; and/or, the diversion ribs are straight diversion ribs or spiral diversion ribs.

Preferably, the guide ribs are sheet-shaped, and in the axial direction from the inlet end to the outlet end of the oxygen guide cylinder, the height of at least some of the guide ribs gradually increases; and/or, the The inner surface of the flow guide rib facing the center of the oxygen guide cylinder is formed as an outwardly convex arc surface.

Preferably, the multiple guide ribs are divided into a plurality of first guide ribs and a plurality of second guide ribs with the same number, and the height of the first guide ribs is greater than that of the second guide ribs height, wherein the first flow guide ribs and the second flow guide ribs are arranged alternately in sequence.

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, and the breathable structure includes a plurality of The openings are arranged, and the size of the plurality of openings is configured so that the part of the transition area between adjacent openings is formed as a connecting strip, and the inner surface of the connecting strip is formed with a A reinforcing rib extending from the guide tube to the face-fitting edge.

Preferably, the volume of the oxygen guide cylinder is 2000mm3-16000mm3.

Preferably, the mouth area of the gas outlet end is 200mm2-1200mm2.

Preferably, the mouth area of the gas outlet end is 240mm2-1120mm2, and the volume of the oxygen guide cylinder is 2200mm3-15000mm3.

Preferably, the mouth area of the gas outlet end is 300mm2-1000mm2, and the volume of the oxygen guide cylinder is 3000mm3-13000mm3.

Preferably, the mouth area of the gas outlet end is 400mm2-650mm2, and the volume of the oxygen guide cylinder is 4100mm3-7700mm3.

Preferably, assuming that the plane perpendicular to the central axis of the oxygen guide cylinder is the 0° reference plane, in the height direction of the mask body, the center of the upper side mouth edge and the lower side mouth edge of the mouth edge of the outlet end are opposite to each other. An included angle is formed between a line connecting the points and the 0° reference plane, and the degree a of the included angle is: -45≤a≤45.

Preferably, the degree a is: -30≤a≤30, preferably -20≤a≤20, more preferably -10≤a≤10, more preferably 4≤a≤7 or -7≤a≤-4.

Preferably, a nose avoidance opening is formed on the nose corresponding area of the mask body corresponding to the wearer's nose, and the nose avoidance opening extends to the edge of the upper side mouth or is connected to the edge of the upper side mouth. Keeping the preset distance, preferably, the cross-sectional shape of the oxygen guiding cylinder is polygonal, elliptical or circular, or, the cross-sectional shape of the oxygen guiding cylinder includes radially protruding toward the inside of the oxygen guiding cylinder More preferably, the cross-sectional dimension of at least a part of the cylinder section of the oxygen guide cylinder gradually expands in the direction from the air inlet end to the air outlet end.

In addition, the present invention provides an oxygen mask, which includes an oxygen connector and any oxygen mask body described above, wherein the oxygen connector includes a connector and a deflector, and the connector has an oxygen inlet channel, so The baffle has a baffle surface, the baffle is connected to the outlet of the oxygen inlet channel, and the baffle surface faces the outlet of the oxygen inlet channel; the connecting head is installed on the oxygen guide cylinder On the inlet end of the oxygen inlet channel, the outlet of the oxygen inlet channel and the baffle are located in the oxygen guide cylinder.

In this technical scheme, since the baffle of the oxygen connector has a baffle surface, such as a baffle concave surface, the baffle is connected to the outlet of the oxygen inlet channel and the baffle surface faces the outlet of the oxygen inlet channel, and the oxygen inlet channel The outlet and the baffle are located in the oxygen guide cylinder, which can make the oxygen flow flowing out from the outlet of the oxygen inlet channel touch the baffle surface, and the baffle surface (for example, can utilize its own concave shape) can diffuse the oxygen flow to around to weaken the oxygen flow intensity, so that the oxygen flow flows into the oxygen guide cylinder from around the baffle surface and mainly flows forward in the surrounding area of the oxygen guide cylinder. The edge is lower than or flush with the inner surface of the mask wall in the mouth and nose area in the direction of the whole circle, so the oxygen flowing at the surrounding area in the oxygen guide cylinder continues along the mask wall in the mouth and nose area at the mouth edge of the outlet end The inner surface flows around to diffuse, and finally forms an oxygen circle that basically surrounds the wearer's nose and mouth area, which can further effectively weaken the oxygen flow intensity directly to the wearer's mouth and nose area, thereby significantly reducing the air pressure of oxygen Sensation, so that oxygen can be evenly diffused in the wearer's nose and mouth and its surrounding area, improving the wearer's comfort.

Preferably, a plurality of circumferentially spaced baffles are formed on the baffle surface and a baffle space is formed between adjacent baffles; and/or, the connecting head is rotatably mounted on On the intake end of the oxygen guide cylinder.

Finally, the present invention provides an oxygen therapy device, which includes an oxygen supply device, an oxygen delivery tube, and any of the oxygen masks described above, wherein the oxygen supply device communicates with the oxygen inlet channel through the oxygen delivery tube .

Description of drawings

Fig. 1 is a schematic perspective view of a first oxygen mask body provided according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the oxygen mask body in Fig. 1 .

Fig. 3 is a partial cross-sectional enlarged structural schematic diagram of a position of the oxygen mask body in Fig. 1 .

Fig. 4 is a schematic structural diagram of the arrangement of flow guide ribs on the inner surface of the oxygen guide cylinder in an oxygen mask body provided according to an embodiment of the present invention.

Fig. 5 is a structural schematic diagram of a flow guide rib arranged on the inner surface of an oxygen guide cylinder in an oxygen mask body provided according to an embodiment of the present invention.

Fig. 6 is a schematic perspective view of the three-dimensional structure of an oxygen mask provided according to an embodiment of the present invention, wherein the oxygen connector is connected with an oxygen delivery tube.

Fig. 7 is a partial cross-sectional enlarged structural schematic diagram of a position of an oxygen mask provided according to an embodiment of the present invention.

Fig. 8 is a schematic perspective view of an oxygen connector in an oxygen mask provided according to an embodiment of the present invention.

Fig. 9 is a schematic perspective view of the oxygen connector in Fig. 8 .

Fig. 10 is a schematic perspective view of another oxygen connector in an oxygen mask according to an embodiment of the present invention.

FIG. 11 is a schematic perspective view of the oxygen connector in FIG. 10 .

12a-12c are simulations of the flow of a first flow of oxygen into the oxygen mask of FIG. 6 .

13a-13c are simulations of the flow of a second flow of oxygen into the oxygen mask of FIG. 6 .

14a-14c are simulations of the flow of a third flow of oxygen into the oxygen mask of FIG. 6 .

15a-15c are simulation diagrams of a fourth flow of oxygen flowing into the oxygen mask of FIG. 6 .

16a-16c are simulations of a fifth flow rate of oxygen flowing into the oxygen mask of FIG. 6 .

Fig. 17 is a schematic perspective view of the first oxygen mask body according to an embodiment of the present invention.

Fig. 18 is a schematic perspective view of the oxygen mask body in Fig. 17 .

Fig. 19 is a schematic structural view of the oxygen mask body in Fig. 18 viewed from the breathing chamber.

Fig. 20 is a side view (front view) structural schematic view of the oxygen mask body in Fig. 17 .

Fig. 21 is a schematic diagram of an included angle A of an oxygen mask body provided according to an embodiment of the present invention.

Fig. 22 is a schematic diagram of an included angle A of another oxygen mask body provided according to an embodiment of the present invention.

Fig. 23 is a schematic perspective view of a third oxygen mask body provided according to an embodiment of the present invention.

Fig. 24 is a schematic perspective view of the oxygen mask body in Fig. 23 from another perspective.

Fig. 25 is a schematic perspective view of a fourth oxygen mask body according to an embodiment of the present invention.

Fig. 26 is a schematic perspective view of the oxygen mask body in Fig. 25 from another perspective.

Explanation of reference signs

1-mask body, 2-mouth and nose area, 3-facial fitting edge, 4-oxygen cylinder, 5-outlet end, 6-outer surface of mask wall, 7-edge of barrel mouth, 8-inner surface of mask wall, 9- Oxygen connector, 10-open opening, 11-first diversion rib, 12-second diversion rib, 13-connecting bar, 14-strengthening rib, 15-oxygen mask body, 16-connector, 17-deflection Cover, 18-oxygen inlet channel, 19-baffle surface, 20-baffle plate, 21-oxygen tube, 22-oxygen mask, 23-curved surface, 24-central support rod, 25-support bar, 26-top Side mouth edge, 27-lower side mouth edge, 28-nose corresponding area, 29-protruding section, 30-installation hole.

Detailed ways

In the following detailed description of the embodiments, reference is made to the accompanying drawings that form a part hereof. The drawings show, by way of example, specific embodiments in which the invention may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. With respect to the drawings, directional terms, such as "below," "upper," "left," "right," etc., are used with reference to the orientation of the drawings being described. Since components of embodiments of the invention can be implemented in a variety of orientations, these directional terms are used for purposes of description, not limitation. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is defined by the appended claims.

With reference to Fig. 1, Fig. 2 and Fig. 3, an object of the present invention is to provide a kind of oxygen mask body 15, and this oxygen mask body 15 comprises mask body 1, face fitting edge 3 and oxygen guide cylinder 4, wherein, mask body 1 Comprising a breathing chamber and a mouth and nose region 2 configured to correspond to the wearer's mouth and nose, the face fitting edge 3 is arranged on the peripheral edge of the mask body 1, and the air inlet end of the oxygen guide cylinder 4 is configured to be capable of installing an oxygen joint 9 ( That is, the oxygen mask body 15 can be used as a separate product and does not include the oxygen connector 9, in actual use, or when assembling to form an oxygen mask, the oxygen connector 9 can be installed on the inlet end of the oxygen guide cylinder 4), and the The air outlet end 5 of the oxygen cylinder 4 is connected to the mask wall outer surface 6 of the mouth and nose area 2 and communicates with the breathing chamber, and the mouth edge 7 of the air outlet end is lower than the mask wall inner surface 8 of the mouth and nose area 2 in the whole circle direction or connected with It is flush, that is, the mouth edge 7 of the outlet end does not protrude beyond the inner surface 8 of the mask wall of the mouth and nose area 2 in the direction of the entire circle.

In this oxygen mask body 15, since the oxygen mask body 15 includes the oxygen guide cylinder 4, the gas outlet end 5 of the oxygen guide cylinder 4 is connected on the mask wall outer surface 6 of the mouth and nose area 2 and communicates with the breathing cavity, and the gas outlet end 5 The mouth edge 7 of the mouthpiece is lower than the mask wall inner surface 8 of the mouth and nose area 2 in the whole circle direction or is flush with it, which allows the oxygen flowing in the surrounding area in the oxygen guide cylinder 4 to flow at the mouth edge 7 of the outlet end 5 Continue to flow along the inner surface 8 of the mask wall of the mouth and nose area 2 to diffuse. Like this, this oxygen mask body 15 is in actual use, and oxygen enters the inlet end of oxygen guide cylinder 4 through oxygen connector 9 (referring to Fig. 6), and flows along oxygen guide cylinder 4, and the surrounding area in oxygen guide cylinder 4 When the oxygen flows along the oxygen guide cylinder 4 to the mouth edge 7 of the outlet end 5, it will diffuse around and continue to flow along the inner surface 8 of the mask wall in the mouth and nose area 2 to diffuse, and finally form a shape that basically surrounds the wearer's mouth. The oxygen circle in the nose area 2, which can effectively reduce the intensity of the oxygen flow directly to the wearer's mouth and nose area 2, thereby significantly reducing the air pressure of the oxygen, so that the oxygen can be evenly diffused in the wearer's mouth, nose and other areas. The surrounding area enhances the comfort of the wearer.

In the oxygen mask body 15, in one embodiment, the angle between the edge inner surface of the mouth edge 7 and the mask wall inner surface 8 can be 180° for a flush transition connection, or, the inner edge of the mouth edge 7 The angle between the surface and the inner surface 8 of the mask wall can be between 180°-270° to form a non-straight transition connection, and this straight transition connection or non-straight transition connection can allow the area around the oxygen guide cylinder 4 to Oxygen diffuses around when flowing along the oxygen guide cylinder 4 to the mouth edge 7 of the outlet end 5 and continues to flow along the mask wall inner surface 8 of the mouth and nose region 2 to continue to diffuse.

In other embodiments, in order to improve the smoothness of the air flow while adapting to the extended contour of the mask body 1, referring to Fig. 1 and Fig. 3, the inner surface of the mouth rim 7 protrudes toward the breathing cavity in the whole circle direction. The arc-shaped surface 23 of the mask wall is smoothly connected with the inner surface 8 of the mask wall. Like this, through the arc-shaped surface 23, the oxygen in the surrounding area in the oxygen guide cylinder 4 flows smoothly and smoothly through the arc-shaped surface 23 at the edge 7 of the cylinder mouth. While diffusing to the surroundings, it flows smoothly onto the inner surface 8 of the mask wall of the mouth and nose area 2, and continues to flow to continue diffusing. Therefore, the arcuate surface 23 between the rim inner surface of the barrel rim 7 and the mask wall inner surface 8 can allow the oxygen flow to flow smoothly from the rim inner surface to the mask wall inner surface 8. Of course, the arc curvature of the arc surface 23 can be specifically selected according to actual requirements.

In addition, in the oxygen mask body 15 , the oxygen guiding cylinder 4 can be an isometric cylinder, that is, the inner diameter of the air guiding cylinder 4 is the same from the air inlet end to the air outlet end 5 . Or, in order to facilitate the diffusion of the oxygen flow, referring to Fig. 1, Fig. 2 and Fig. 3, at least the mouth of the gas outlet 5 of the oxygen guide cylinder 4 gradually expands, for example, the mouth of the gas outlet 5 can be formed into a trumpet shape. For example, the oxygen guiding cylinder 4 may include a section of equal diameter and a section of gradually diverging cylinder, or the air guiding cylinder 4 is integrally formed as a gradually expanding cylinder from the inlet end to the outlet end. In this way, the oxygen in the surrounding area in the oxygen guide cylinder 4 is more likely to diffuse to the surroundings at the gradually expanding cylinder mouth. For example, it flows into the inner surface 8 of the mask wall through the arc-shaped surface 23 from the barrel mouth extending gradually.

In addition, in the oxygen mask body 15, the oxygen guide cylinder 4 can be a circular cylinder, or can be a polygonal cylinder, and the sides of the polygonal cylinder can be connected by arc-shaped transition edges. Referring to FIG. 4, the oxygen guide cylinder 4 is Triangular cylinder, adjacent sides are smoothly connected by arc-shaped transition sides.

In addition, in the oxygen mask body 15, in one embodiment, the inner surface of the oxygen guide cylinder 4 can be smooth and flat as a whole, for example, referring to FIG. Alternatively, in other embodiments, referring to FIG. 4 , a plurality of flow guide ribs arranged at intervals in the circumferential direction and extending along the axial direction of the oxygen guide cylinder are formed on the inner surface of the oxygen guide cylinder 4 , and the adjacent flow guide ribs The diversion area is formed between the diversion ribs, and the diversion ribs terminate before the inner surface 8 of the mask wall, that is, the diversion ribs do not protrude from the inner surface 8 of the mask wall. Separation allows the oxygen flow to flow forward in each diversion area, and the separation effect of the diversion ribs can further weaken the intensity of the oxygen flow.

In addition, each diversion rib can be set according to actual needs, so that the circumferential spacing of multiple diversion areas is different, or the circumferential spacing of some of the plurality of diversion areas can be different, so that multiple The circumferential spacing of the other guide areas in the guide areas is the same. Or, in one embodiment, a plurality of diversion areas, that is, the circumferential distances of all diversion areas are the same, which can make the diversion area of each diversion area approximately the same, so that the oxygen guide cylinder 4 can be made Oxygen flow in the area is more uniform.

In addition, in the oxygen mask body, the flow guide ribs can have various shapes, for example, they can be triangular or trapezoidal, or can be sheet-like. In addition, in the axial direction from the air inlet end of the oxygen guide cylinder 4 to the air outlet end (as shown by the arrow in Figure 5), the height of at least part of the guide ribs gradually increases, referring to Figure 5, so, due to the position of the air outlet end , the height of the diversion ribs is higher, so the depth of the diversion area formed is larger, which can better separate and guide the oxygen flow, further weaken the oxygen flow intensity, and make it easier for the oxygen flow in each diversion area to follow The inner surface 8 of the mask wall flows.

In addition, as shown in FIG. 5 , the inner surface of the guide rib facing the center of the oxygen guide cylinder is formed as a convex arc surface, which is more conducive to guiding the oxygen flow forward. For example, the inner surface of the sheet-shaped flow guiding rib extending straight in the axial direction toward the center of the oxygen guiding cylinder is formed as an outwardly convex arc surface.

In addition, the heights of the diversion ribs may be the same or different. For example, in one embodiment, with reference to Fig. 4, a plurality of flow guide ribs are divided into a plurality of first flow guide ribs 11 and a plurality of second flow guide ribs 12 with the same number, and the height of the first flow guide ribs 11 is greater than The height of the second flow guide ribs 12, wherein the first flow guide ribs 11 and the second flow guide ribs 12 are arranged alternately in sequence. For example, in Fig. 4, three first flow guide ribs 11 and three second flow guide ribs 12 are alternately arranged at one time, so that the three first flow guide ribs 11 can divert the oxygen flow in the surrounding area of the oxygen guide cylinder 4 Effectively separated, and between adjacent first flow guide ribs 11, a second flow guide rib 12 can further separate the oxygen flow between adjacent first flow guide ribs 11, of course, due to the second The height of the diversion ribs 12 is relatively small, so the oxygen flows separated by the second diversion ribs 12 can pull each other on the surface to flow forward rapidly.

In addition, the diversion ribs can have multiple extension methods. For example, the diversion ribs can be straight and straight, or can be helical diversion ribs, or can be non-helical diversion ribs with curved extensions. ribs. For example, in Fig. 4, the diversion ribs are straight diversion ribs. In addition, the spiral guide ribs can guide the oxygen flow in the surrounding area of the oxygen guide cylinder 4, so that the oxygen flow spirals forward to improve the flow uniformity of the oxygen flow, and can make the oxygen flow flow when it leaves the edge 7 of the cylinder mouth. Flow into the inner surface 8 of the mask wall with a certain rotation direction, for example, flow through the arc surface 23 with a certain rotation direction and flow into the inner surface 8 of the mask wall. This can further improve the diffusivity of the oxygen flow, so as to improve the uniformity of mixing of the oxygen flow and the air entering the breathing chamber.

In addition, referring to FIG. 1 , FIG. 17 , FIG. 23 and FIG. 25 , the transition area of the mask body 1 between the nose and mouth area 2 and the face fitting edge 3 is provided with a breathable structure. The breathable structure can allow the wearer's exhaled gas to be discharged into the external environment. In addition, it also allows the air in the external environment to enter the breathing chamber, which allows the wearer to have a feeling similar to natural breathing when wearing the oxygen mask body. And there is no sense of urgency to breathe.

Of course, it should be noted that the air-permeable structure can have multiple types, for example, in one type of the air-permeable structure, the air-permeable structure can be a plurality of air holes formed by gathering on a part of the transition region, of course, the number, size and shape of the air holes It can be set according to actual needs. Or, in another type of air-permeable structure, referring to Fig. 1 and Fig. 2, the air-permeable structure includes a plurality of openings 10 arranged at intervals in the circumferential direction of the mask body 1, and the size of the plurality of openings 10 is configured such that the transition The part between the adjacent openings 10 is formed as a connecting strip 13 , and the inner surface of the connecting strip 13 is formed with a reinforcing rib 14 extending from the guide tube 4 to the face fitting edge 3 . For example, it extends from the oxygen guide cylinder 4 to the face fitting edge 3 . That is, the opening 10 can have a larger size. In addition, the number and shape of the opening 10 can be set according to requirements. For example, the number of the opening 10 can be 3, 4 or 5, and the shape can be A circular hole, a square hole, or an oval hole, for example, the shape of each opening 10 may be as shown in FIGS. 1 , 2 and 6 . The open opening 10 can allow the wearer to speak and drink naturally. For example, the opening 10 below the mask body 1 can allow the wearer to drink directly from a water cup, or can allow a straw to pass through, so that the wearer can drink through the straw.

In addition, in the oxygen mask body 15, the oxygen mask body 15 can be made of soft materials, so that the oxygen mask body 15 can be deformed to adapt to the face shape changes of different wearers. Or, the oxygen mask body 15 can be made of a hard material. At this time, in order to be more suitable for different wearers to wear, the face fitting edge 3 can have softness, and the soft face fitting edge 3 can adapt to different wearers. Face shape changes.

In addition, with reference to Figures 17-20, the present invention also provides an oxygen mask body, which includes a mask body 1, a face fitting edge 3 and an oxygen guide cylinder 4, wherein the mask body 1 includes a breathing chamber and is configured as In the mouth and nose area corresponding to the wearer's mouth and nose, the face fitting edge 3 is arranged on the peripheral edge of the mask body 1 to fit the wearer's facial contour when in use, and the oxygen guide cylinder 4 includes an air inlet end and an air outlet end 5 And the oxygen delivery channel section between the inlet end and the outlet end 5, the inlet end is configured to be capable of installing an oxygen joint 9, the outlet end 5 is connected to the mouth and nose area and communicates with the breathing cavity, and the mouth edge 7 of the outlet end 5 is on the The whole circle direction is lower than or flush with the inner surface 8 of the mask wall in the mouth and nose area; wherein, the volume of the oxygen guiding cylinder 4 is 2000mm ³ -16000mm ³ .

In addition, what needs to be explained here is that, in the oxygen mask body, the cylinder wall thickness of the oxygen guide cylinder 4 is relatively thin and negligible, and the volume of the oxygen guide cylinder 4 is the volume of the oxygen guide cylinder 4 .

In the oxygen mask body, since the volume of the oxygen guide cylinder 4 is 2000mm ³ -16000mm ³ , through such a volume of the oxygen guide cylinder, the oxygen concentration in the oxygen guide cylinder can be increased to the effective concentration while slowing down the oxygen flow rate. The required time is short, the inhaled oxygen concentration level remains stable, and the oxygen concentration is sufficient. Even if the wearer's breathing rate and oxygen flow rate change, the oxygen mask body can still ensure an effective and stable oxygen inhalation concentration and ensure the effect of oxygen inhalation therapy. Simultaneously, because the cylinder mouth edge of gas outlet 5 is lower than the mask wall inner surface 8 of mouth and nose area in the whole circle direction or flush with it, this allows the oxygen that flows around the area in the oxygen guide cylinder 4 to flow at the outlet of gas outlet 5. The edge of the barrel mouth continues to flow along the inner surface of the mask wall in the mouth and nose area to spread around. In this way, in the actual use of the oxygen mask body, oxygen enters the oxygen guide cylinder 4 through the oxygen connector and flows along the oxygen guide cylinder 4, while the oxygen in the surrounding area of the oxygen guide cylinder 4 flows along the oxygen guide cylinder 4 to the outlet. When it is at the edge of the barrel mouth of the end 5, it will diffuse around and continue to flow along the inner surface 8 of the mask wall in the mouth and nose area to diffuse, and finally form an oxygen circle that basically surrounds the wearer's mouth and nose area, which can effectively weaken the direct flow to the wearer. The strength of the oxygen flow in the wearer's mouth and nose area can be significantly reduced, so that the oxygen can be evenly diffused in the wearer's mouth, nose and surrounding areas, and there will be no discomfort such as nasal dryness and headache, which improves wearing The user's comfort.

In addition, the oxygen mask body of the present application also has obvious clinical significance for reducing the intensity of the oxygen flow directly to the wearer's mouth and nose area. Because when breathing, the nasal mucosa of the human body will continuously secrete water to moisten the inhaled air, so that the nasal cavity will not be dry. Excessive oxygen flow intensity directly flowing to the wearer's mouth and nose area will directly take away a large amount of nasal mucosal moisture during inhalation, resulting in dryness and discomfort of the wearer's nasal cavity. Because the oxygen mask body of the present application can effectively weaken the oxygen flow intensity directly flowing to the wearer's mouth and nose area, and can significantly reduce the airflow pressure of oxygen, it can objectively avoid directly taking away the moisture secreted by the nasal mucosa. As a result, the wearer's nasal cavity always maintains good mucous membrane moisture to moisten the inhaled air, and there will be no discomfort such as nasal dryness and headaches, which improves the comfort of treatment.

In addition, the oxygen mask body of the present application is also very conducive to the rapid discharge of the carbon dioxide exhaled by the wearer, so as to avoid carbon dioxide remaining in the oxygen mask body. In the existing oxygen mask, there are many storage areas in the mask body, so that part of the carbon dioxide exhaled by the patient will enter and remain in these storage areas and will not be easily discharged. When the patient inhales, it will directly cause the patient to repeatedly inhale carbon dioxide. This is particularly unfavorable to patients, especially critically ill patients. Because repeated inhalation of carbon dioxide will directly lead to increased heart rate and accelerated breathing rate. For some seriously ill patients, it may also lead to carbon dioxide retention, which will disturb the internal environment of the human body, thereby affecting the blood pH value, and may cause respiratory acidosis, which will affect treat. However, in the oxygen mask body of the present application, since the mouth edge of the outlet end is lower than the inner surface of the mask wall in the mouth and nose area or is flush with it in the whole circle direction, it can completely avoid the occurrence of carbon dioxide storage areas in the mask body, thus wearing The carbon dioxide exhaled by the patient cannot be retained, which can completely avoid repeated inhalation of carbon dioxide, so it has a more significant clinical therapeutic effect, especially for critically ill patients.

In addition, in order to further improve the stability of oxygen inhalation concentration and ensure the therapeutic effect of oxygen inhalation, in some embodiments, the area of the barrel opening of the air outlet end 5 is 200mm ² -1200mm ² . Through such a mouth area, an appropriate oxygen area can be formed at the nose and mouth of the wearer. At the same time, combined with the volume of the oxygen guide cylinder 4 of 2000mm ³ -16000mm ³ , the oxygen concentration in the oxygen guide cylinder can be further increased to the effective concentration. The required time is short, the inhaled oxygen concentration level remains stable, and the oxygen concentration is sufficient, so even if the wearer's breathing rate and oxygen flow rate change, the oxygen mask body can still ensure an effective and stable oxygen inhalation concentration, ensuring the effect of oxygen inhalation therapy .

In addition, in order to further improve the stability of oxygen inhalation concentration and ensure the effect of oxygen inhalation therapy, the time required for the oxygen concentration in the oxygen guide cylinder to rise to the effective concentration is maintained to maintain the level of inhaled oxygen concentration, and the maximum inhaled oxygen concentration level achieves a better effect , in some embodiments, the area of the mouth of the gas outlet end 5 is 240mm ² -1120mm ² , and the volume of the oxygen guide cylinder 4 is 2200mm ³ -15000mm ³ . In order to make the oxygen concentration in the oxygen guide cylinder rise to the time required for the effective concentration, maintain the inhaled oxygen concentration level, and achieve a better effect at the maximum inhaled oxygen concentration level, in some preferred embodiments, the area of the cylinder mouth of the gas outlet 5 is 300mm ² -1000mm ² , the volume of the oxygen guide cylinder 4 is 3000mm ³ -13000mm ³ . In order to make the oxygen concentration in the oxygen guide cylinder rise to the time required for the effective concentration, maintain the inhaled oxygen concentration level, and achieve the optimal effect of the maximum inhaled oxygen concentration level, in some further preferred embodiments, the area of the cylinder mouth of the gas outlet end 5 is 400mm ² -650mm ² , the volume of the oxygen guide cylinder 4 is 4100mm ³ -7700mm ³ .

In addition, what needs to be explained here is that, between 200mm ² -1200mm ² , the area of the cylinder mouth of the gas outlet 5 can be any value, for example, you can refer to the specific values in the following Table 1 (the area size is the first row from left to right , then the second row from left to right, then the third row from left to right).

Table 1

In addition, it should be noted here that, between 2000mm ³ -16000mm ³ , the volume of the oxygen guide cylinder 4 can be any value, for example, you can refer to the specific values in the following Table 2 (the volume is the first row from left to right , then the second row from left to right, then the third row from left to right).

Table 2

In addition, with reference to Fig. 21 and Fig. 22, in some embodiments, it is assumed that the plane perpendicular to the central axis of the oxygen guide cylinder 4 is the 0° reference plane P, in the height direction of the mask body 1 (such as the direction of the double arrow shown in Fig. 17 , in addition , the height direction refers to the up and down direction of the face of the wearer wearing the oxygen mask body), the line L between the center points of the upper side mouth edge 26 and the lower side mouth edge 27 relative to the cylinder mouth edge 7 of the outlet end 5 ( An angle A is formed between the dashed line in FIG. 21 or FIG. 22) and the 0° reference plane P, and the degree a of the angle A is: -45≤a≤45. That is, relative to the 0° datum plane, the range of the included angle A is from the line L turning 45° counterclockwise from the 0° datum plane to the line L turning 45° clockwise from the 0° datum plane, so that the included angle A The range is 45°--45°. Alternatively, the line L may extend horizontally. The angle range of the included angle A has positive and negative values because the oxygen mask body can be adjusted up and down to be worn.

The degree a of the included angle A formed between the line L between the center points of the upper side mouth edge 26 and the lower side mouth edge 27 relative to the mouth edge of the gas outlet end 5 of the oxygen guide cylinder 4 and the 0° reference plane P is : -45≤a≤45, through such an included angle A, an appropriate oxygen diffusion interval can be formed between the mouth edge of the air outlet end and the wearer's mouth and nose area. In addition, when the volume of the oxygen guide cylinder 4 is ^{2000mm3-16000mm3} , the time required for the oxygen concentration in the oxygen guide cylinder to rise to the effective concentration can be shortened, the inhaled oxygen concentration ^level remains stable, and the oxygen concentration is sufficient, even if When the breathing rate and oxygen flow rate of the wearer change, the oxygen mask body can still ensure an effective and stable oxygen inhalation concentration and ensure the effect of oxygen inhalation therapy. Simultaneously, because the cylinder mouth edge of gas outlet 5 is lower than the mask wall inner surface 8 of mouth and nose area in the whole circle direction or flush with it, this allows the oxygen that flows around the area in the oxygen guide cylinder 4 to flow at the outlet of gas outlet 5. The edge of the barrel continues to flow along the inner surface of the mask wall in the mouth and nose area to diffuse and fill the oxygen diffusion gap. In this way, in the actual use of the oxygen mask body, oxygen enters the oxygen guide cylinder 4 through the oxygen connector and flows along the oxygen guide cylinder 4, while the oxygen in the surrounding area of the oxygen guide cylinder 4 flows along the oxygen guide cylinder 4 to the outlet. When it is at the edge of the barrel mouth of the end 5, it will diffuse around and continue to flow along the inner surface 8 of the mask wall in the mouth and nose area to diffuse, and finally form an oxygen circle that basically surrounds the wearer's mouth and nose area, which can effectively weaken the direct flow to the wearer. The strength of the oxygen flow in the wearer's mouth and nose area can be significantly reduced, so that the oxygen can be evenly diffused in the wearer's mouth, nose and surrounding areas, and the comfort of the wearer can be improved.

For example, in one embodiment, the mouth area of the gas outlet end 5 of the oxygen guide cylinder 4 is 200mm ² -1200mm ² , the volume of the oxygen guide cylinder 4 is 2000mm ³ -16000mm ³ , and the degree of the included angle A is a°, where -45≤a≤45, through the mouth area, the volume of the oxygen guide cylinder 4, and the included angle A, even if the breathing frequency and oxygen flow rate of the wearer change, the oxygen mask body can still further ensure effective and stable inhalation. Oxygen concentration to ensure the effect of oxygen inhalation therapy.

In addition, in the prior art, no one has ever studied the oxygen inhalation effect of patients from the structural relationship between the oxygen guide cylinder and the oxygen mask body. After the inventor proposed the above-mentioned inventive concept, the above-mentioned technical effects were confirmed after a large number of clinical tests were carried out. In addition, in order to further increase the time required for the oxygen concentration in the oxygen guide cylinder to reach the effective concentration, maintain the inhaled oxygen concentration level, improve the stability of the oxygen inhalation concentration, and ensure the effect of oxygen inhalation therapy, in some embodiments, the degree a is: -30≤a≤30. In order to further increase the time required for the oxygen concentration in the oxygen guide cylinder to reach the effective concentration and maintain the inhaled oxygen concentration level, in some preferred embodiments, the degree a is: -20≤a≤20. In order to increase the time required for the oxygen concentration in the oxygen guide cylinder to the effective concentration, maintain the inhaled oxygen concentration level, and achieve a better effect at the maximum inhaled oxygen concentration level, in some further preferred embodiments, the degree a is: -10≤ a≤10. In order to make the oxygen concentration in the oxygen guide cylinder rise to the time required for the effective concentration, maintain the inhaled oxygen concentration level, and achieve the optimal effect of the maximum inhaled oxygen concentration level, in some further preferred embodiments, the degree a is: 4≤a ≤7, or, -7≤a≤-4. In addition, it should be noted here that the degree a may be any specific value between -45 and 45, for example, a may be 0, -5, 5, 15 or 25.

In addition, referring to FIG. 20 , in the up-down direction of FIG. 20 , the top outer contour line of the mask body 1 may extend along the connecting line L in the height direction.

In addition, in the oxygen mask body, in some implementations, the angle between the inner surface of the edge of the mouthpiece and the inner surface of the mask wall can be 180° for a flush transition connection, or, the inner surface of the edge of the mouthpiece and the inner surface of the mask wall The angle between the inner surfaces of the walls can be between 180°-270° to form a non-straight transition connection, which allows the oxygen in the surrounding area of the oxygen guide cylinder to flow along the guide tube. When the oxygen cylinder flows to the edge of the cylinder mouth of the outlet end, it diffuses around and continues to flow along the inner surface of the mask wall in the mouth and nose area to continue to diffuse.

In other embodiments, in order to improve the smoothness of air flow while adapting to the extended contour of the mask body 1, referring to FIG. The surface is smoothly connected with the inner surface of the mask wall. In this way, through the curved surface, the oxygen in the surrounding area of the oxygen guide cylinder flows smoothly and smoothly through the curved surface at 7 places on the edge of the cylinder mouth. Flows onto the inside surface of the mask wall in the nose and mouth area and continues to flow for continued diffusion. Therefore, the arc-shaped surface between the inner surface of the rim of the mouthpiece rim 7 and the inner surface of the mask wall can allow the oxygen flow to flow smoothly from the inner surface of the rim to the inner surface of the mask wall. Of course, the arc curvature of the arc surface can be specifically selected according to actual needs.

In addition, in some embodiments, referring to Fig. 20 to Fig. 22, a nose avoidance opening (not shown in the figures) is formed on the nose corresponding area 28 of the mask body 1 corresponding to the wearer's nose, and the nose avoidance opening extends to the upper A preset distance is maintained at the edge 26 of the side opening or from the edge 26 of the upper side opening. In this way, the wearer's nose can be prevented from touching the mask body 1, thereby improving wearing comfort. For example, in the oxygen mask body shown in FIG. 21 , since the nose corresponding region 28 extends away from the face, the nose corresponding region 28 may not be formed with a nose avoidance opening, or may be formed with a nose avoidance opening. For another example, in the oxygen mask body shown in FIG. 22 , since the connection line L rotates clockwise relative to the 0° reference plane, the nose corresponding area 28 extends toward the face. At this time, the nose corresponding area 28 can be A nose avoidance opening is formed, and of course, the nose corresponding region 28 may not be formed with a nose avoidance opening.

In addition, in the oxygen mask body, the cross-sectional shape of the oxygen guide cylinder 4, such as the oxygen delivery channel section, can have various forms, but it should be noted that no matter what the cross-sectional shape of the oxygen guide cylinder 4 is, it only needs to meet the requirements of the air outlet. The mouth area of the end 5 is 150mm ² -1200mm ² and the volume of the oxygen guide cylinder 4 is 1500mm ³ -16000mm ³ . For example, in some embodiments, the cross-sectional shape of the oxygen guide cylinder 4 is a polygon, and the polygon can be a triangle, a square (refer to FIG. 1 and FIG. 3 ), a rectangle, a trapezoid, a pentagon or a hexagon, etc. For example, in some other embodiments, the cross-sectional shape of the oxygen guide cylinder 4 is circular, refer to FIG. 23 and FIG. 24 . For another example, in some other embodiments, the cross-sectional shape of the oxygen guide cylinder 4 is elliptical. For another example, in some other embodiments, the cross-sectional shape of the oxygen guide cylinder 4 includes a protruding section 29 protruding radially inside the oxygen guide cylinder, for example, the cross-sectional shape of the oxygen guide cylinder 4 is a quincunx shape or a pentagonal shape ( Refer to Figure 25 and Figure 26). Of course, the cross-sectional shape of the oxygen guide cylinder 4 can also be other shapes.

In addition, in some embodiments, the cross-sectional size of the oxygen guide cylinder 4, such as at least a part of the oxygen delivery channel section, gradually expands in the direction from the inlet end to the gas outlet end 5, so that the cross-sectional size can be enlarged gradually. While ensuring the oxygen concentration, the oxygen flow rate is further slowed down to reduce the pressure of the airflow, so that the oxygen can be evenly diffused in the wearer's mouth, nose and surrounding areas, thereby ensuring the effect of oxygen inhalation therapy and improving the comfort of the wearer. In addition, in some embodiments, the entire length of the oxygen guide cylinder 4 in the axial direction expands gradually in the direction from the air inlet end to the air outlet end 5 . In addition, in an optional embodiment, the cross-sectional size of the oxygen guide cylinder 4 may change in a stepwise manner in the axial direction. In addition, in some embodiments, the oxygen guide cylinder 4 may be an isometric cylinder, that is, the inner diameter of the air guide cylinder 3 is the same from the inlet end to the air outlet end.

In addition, in the oxygen mask body, the oxygen mask body can be made of soft materials, so that the oxygen mask body can be deformed to adapt to the face shape changes of different wearers. Or, the oxygen mask body can be made of hard material. At this time, in order to be more suitable for different wearers to wear, the face fitting edge 3 can have softness, and the soft face fitting edge 3 can adapt to the face shapes of different wearers. Variety.

Another object of the present invention is to provide a kind of oxygen mask 22, with reference to Fig. 6 and Fig. 7, this oxygen mask 22 comprises oxygen connector 9 and above any described oxygen mask body 15, and wherein, oxygen connector 9 comprises connector 16 and The baffle 17, the connector has an oxygen inlet passage 18, the baffle 17 has a baffle surface 19, such as a baffle concave surface or a baffle convex surface, the baffle 17 is connected at the outlet of the oxygen inlet passage 18, and the baffle surface 19 Toward the outlet of the oxygen inlet channel 18; the connector 16 is installed on the inlet end of the oxygen guide cylinder 4, for example, an installation hole 30 is formed on the end wall of the inlet end, and a section of the cylinder of the connector 16 can be rotatably installed on the inlet port. In the installation hole 30 at the end, the outlet of the oxygen inlet channel 18 and the baffle 17 are located in the oxygen guide cylinder 4 .

In this oxygen mask 22, since the baffle 17 of the oxygen connector 9 has a baffle 19, the baffle 17 is connected to the outlet of the oxygen inlet channel 18 and the baffle 19 is towards the outlet of the oxygen inlet 18, and the inlet The outlet of the oxygen channel 18 and the baffle 17 are located in the oxygen guide cylinder 4, which can make the oxygen flow flowing out from the outlet of the oxygen inlet channel 18 contact the baffle surface 19, and the baffle surface 19 can utilize its own surface shape Such as a concave shape or a convex shape, the oxygen flow is diffused around to weaken the oxygen flow intensity, so that the oxygen flow flows into the oxygen guide cylinder 4 from around the baffle surface 19 and mainly flows forward in the surrounding area of the oxygen guide cylinder 4, For example can refer to the edge part of the view that represents oxygen flow in Fig. 12a, like this, as mentioned above, because the cylinder mouth edge 7 of the gas outlet end 5 of oxygen guide cylinder 4 is lower than in the mask wall of mouth and nose region 2 on the whole circle direction Surface 8 or flush with it, that is, the face mask wall inner surface 8 that does not protrude from the mouth and nose area 2, therefore, the oxygen that flows around the area in the oxygen guide cylinder 4 continues along the cylinder mouth edge 7 at the outlet end 5. The mask wall inner surface 8 of the mouth and nose area 2 flows to the surroundings to diffuse, and finally forms an oxygen circle substantially surrounding the wearer's mouth and nose area, which can further effectively weaken the oxygen flow intensity directly flowing to the wearer's mouth and nose area, This can significantly reduce the airflow pressure of oxygen, enable the oxygen to diffuse evenly in the wearer's nose and mouth and its surrounding areas, and improve the comfort of the wearer.

In addition, in this oxygen mask, the shape of the deflector 17 may be an umbrella shape, or may be a bowl shape, and the cross section may be a circular shape, or may be a polygonal shape. In addition, the baffle plate 20 of any shape may not be provided in the baffle surface 19 of the baffle cover 17 . Alternatively, referring to an embodiment described in FIG. 8 and FIG. 9 and another embodiment shown in FIG. 10 and FIG. 11, a plurality of circumferentially spaced baffles 20 are formed on the baffle surface 19, and adjacent A baffle space is formed between the baffles 20 . In this way, after the oxygen flow touches the baffle surface 19, it will be divided into a plurality of smaller oxygen flows that are baffled in the baffle space by a plurality of baffles 20, and the plurality of smaller oxygen flows flow along the direction of the baffle space. The edge flows and enters the surrounding area of the oxygen guide cylinder 4, therefore, the baffle plate 20 can fully disperse the oxygen flow coming in through the oxygen inlet channel 18, so as to further weaken the oxygen flow intensity. In addition, the plurality of baffles 20 may be uniformly distributed or non-uniformly distributed in the circumferential direction.

In addition, in this oxygen mask, the oxygen connector 9 may have various types. For example, in one type, with reference to FIGS. 8 and 9 , a central support rod 24 can protrude from the center of the inner passage of the connector 16 , and the inner surface of the inner passage of the connector 16 and the outer surface of the central support rod 24 An annular oxygen inlet channel 18 is formed between them, and the baffle 17 is connected to the protruding end of the central support rod 24 , and the deflection surface 19 of the baffle 17 is uniformly arranged with a plurality of baffles 20 in the circumferential direction. Or, with reference to Fig. 10 and Fig. 11, a plurality of circumferentially spaced support bars 25 are axially arranged on the outlet end face of the channel wall of the oxygen inlet channel 18, and the edge of the baffle 17 is connected with a plurality of support bars 25, because A plurality of support bars 25 are arranged on the outlet end face of the oxygen inlet channel 18, which can avoid taking up the space of the oxygen inlet channel 18, so that the oxygen flow is easier to flow in the oxygen inlet channel 18. In addition, the oxygen flow from the oxygen inlet channel 18 When the outlet end of the outlet flows out, a part of the oxygen can be separated by a plurality of support bars 25 when diffusing to the surroundings, so that it can pass through the space between adjacent support bars 25, which can further slow down the oxygen flow intensity. Similarly, the baffle A plurality of baffles 20 are evenly spaced on the deflector surface 19 of the cover 17 in the circumferential direction. Of course, in addition to the embodiments shown in FIGS. 8 and 9 and the embodiments shown in FIGS. 10 and 11 , the baffle 17 can also be arranged on the connector 16 in other ways, for example, on the outer surface of the connector 16 A connecting bar is provided, and the outer surface of the baffle 17 is connected with the connecting bar, which can also realize the fixed connection of the baffle 17 .

In addition, in the oxygen mask 22 , the connecting head 16 can be fixedly installed on the intake end of the oxygen guide cylinder 4 . Or, the connecting head 16 can be rotatably installed on the intake end of the oxygen guide cylinder 4, so that the wearer can rotate the connecting head 16 according to his own needs to adjust the position of the oxygen mask 22 relative to the oxygen delivery tube 21. For example, when the wearer needs to lie down, the connecting head 16 can be turned to adjust the relative position between the oxygen mask 22 and the oxygen delivery tube 21, thereby improving the comfort.

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 any oxygen mask 22 described above, wherein the oxygen supply device passes through the oxygen delivery tube 21 and enters The oxygen channel 18 communicates, and the oxygen supply device can provide oxygen flow.

12a-16c are simulation diagrams of different flow rates of oxygen flow into the oxygen mask of FIG. 6 . It can be seen that, under different flow rates, when the oxygen flow entering from the oxygen inlet channel 18 contacts the baffle surface 19 of the baffle cover 17, due to the baffle effect of the baffle surface 19, the baffle surface 19 can divert the oxygen flow Diffusion to all around to weaken the oxygen flow intensity, so that the oxygen flow flows into the oxygen guide cylinder 4 from around the baffle surface 19 and mainly flows forward in the surrounding area of the oxygen guide cylinder 4, for example, it can be referred to Fig. The edge portion of the view, at this time, because the mouth edge 7 of the outlet end 5 of the oxygen guide cylinder 4 is lower than the mask wall inner surface 8 of the mouth and nose area 2 in the whole circle direction or is flush with the mask wall inner surface 8, therefore, The oxygen flowing in the surrounding area in the oxygen guide cylinder 4 continues to flow around the inner surface 8 of the mask wall of the mouth and nose area 2 at the mouth edge 7 of the outlet end 5 to diffuse, for example, refer to Fig. 12c, Fig. 13c, Fig. 14c , in Fig. 15c and Fig. 16c, the oxygen flow shown in the edge part of the view will flow along the inner surface 8 of the mask wall, for example refer to the flow of oxygen shown in Fig. 12b-Fig. The oxygen circle basically surrounds the wearer's mouth and nose area, which can further effectively reduce the intensity of oxygen flow directly to the wearer's mouth and nose area, thereby significantly reducing the pressure of oxygen airflow and allowing oxygen to spread evenly across the wearer The nose and mouth and its surrounding area enhance the comfort of the wearer.

Those skilled in the art should understand that the above-mentioned embodiments are illustrative rather than restrictive. Different technical features in different embodiments can be combined to achieve beneficial effects. Those skilled in the art should be able to understand and implement other modified embodiments of the disclosed embodiments on the basis of studying the drawings, specification and claims. Any reference signs in the claims should not be construed as limiting the scope. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to obtain beneficial effects.

Claims

An oxygen mask body, characterized in that it comprises:

A mask body (1) comprising a breathing chamber and a mouth and nose region (2) configured to correspond to the wearer's mouth and nose;

The face fitting edge (3), the face fitting edge (3) is arranged on the peripheral edge of the mask body (1);

An oxygen guide cylinder (4), the inlet end of the oxygen guide cylinder (4) is configured to be capable of installing an oxygen connector (9), and the outlet end (5) is connected to the outer surface of the mask wall of the mouth and nose area (2) ( 6) above and communicated with the breathing cavity, the mouth edge (7) of the gas 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 whole circle direction.
The oxygen mask body according to claim 1, wherein the edge inner surface of the mouth edge (7) passes through the arc surface protruding towards the breathing chamber and the inner surface of the mask wall in the whole circle direction. (8) Smooth connection.
The oxygen mask body according to claim 1, characterized in that at least the mouth of the outlet end (5) of the oxygen guide cylinder (4) expands gradually.
The oxygen mask body according to any one of claims 1-3, characterized in that, the inner surface of the oxygen guide cylinder (4) is formed with a plurality of circumferential intervals arranged along the axial direction of the oxygen guide cylinder Extended diversion ribs, a diversion area is formed between adjacent diversion ribs, and the diversion ribs terminate before the inner surface (8) of the mask wall.
The oxygen mask body according to claim 4, wherein the plurality of diversion regions have the same circumferential spacing; and/or, the diversion ribs are straight diversion ribs or spiral diversion ribs.
The oxygen mask body according to claim 4, characterized in that, the guide ribs are sheet-shaped, and in the axial direction from the inlet end to the outlet end of the oxygen guide cylinder (4), at least part of the The height of the diversion ribs gradually increases;

and / or,

The inner surface of the flow guiding rib facing the center of the oxygen guiding cylinder is formed as an outwardly convex arc surface.
The oxygen mask body according to claim 4, characterized in that, a plurality of said diversion ribs are divided into a plurality of first diversion ribs (11) and a plurality of second diversion ribs (12) with the same number, The height of the first flow guide rib (11) is greater than the height of the second flow guide rib (12), wherein the first flow guide rib (11) and the second flow guide rib (12) are sequentially Arranged alternately.
The oxygen mask body according to claim 1, characterized in that, the transition area between the mouth and nose area (2) and the face fitting edge (3) of the mask body (1) is provided with an air-permeable structure, the breathable structure includes a plurality of openings (10) arranged at intervals in the circumferential direction of the mask body (1), and the size of the plurality of openings (10) is configured such that the transition area is located The part between the adjacent openings (10) is formed as a connecting strip (13), and the inner surface of the connecting strip (13) is formed with a joint from the guide tube (4) to the face. Ribs (14) extending from the edge (3).
The oxygen mask body according to claim 1, characterized in that the volume of the oxygen guide cylinder (4) is 2000mm 3 -16000mm 3 .
The oxygen mask body according to claim 9, characterized in that, the mouth area of the gas outlet end (5) is 200mm 2 -1200mm 2 .
The oxygen mask body according to claim 10, characterized in that, the mouth area of the gas outlet (5) is 240mm 2 -1120mm 2 , and the volume of the oxygen guide cylinder (4) is 2200mm 3 -15000mm 3 .
The oxygen mask body according to claim 11, characterized in that, the mouth area of the gas outlet (5) is 300mm 2 -1000mm 2 , and the volume of the oxygen guide cylinder (4) is 3000mm 3 -13000mm 3 .
The oxygen mask body according to claim 12, characterized in that, the mouth area of the gas outlet (5) is 400mm 2 -650mm 2 , and the volume of the oxygen guide cylinder (4) is 4100mm 3 -7700mm 3 .
The oxygen mask body according to claim 1, characterized in that, assuming that the plane perpendicular to the central axis of the oxygen guide cylinder (4) is the 0° reference plane (P), in the height direction of the mask body (1) , the connection line between the center points of the upper side mouth edge (26) and the lower side mouth edge (27) of the barrel mouth edge (7) of the gas outlet (5) and the 0° reference plane (P) An included angle (A) is formed between them, and the degree a of the included angle is: -45≤a≤45.
The oxygen mask body according to claim 14, characterized in that the degree a is: -30≤a≤30, preferably -20≤a≤20, more preferably -10≤a≤10, more preferably 4≤a ≤7 or -7≤a≤-4.
The oxygen mask body according to claim 1, characterized in that a nose avoidance opening is formed on the nose corresponding area (28) of the mask body (1) corresponding to the wearer's nose, and the nose avoidance opening Extending to the upper side mouth edge (26) or keeping a preset distance from the upper side mouth edge (26), preferably, the cross-sectional shape of the oxygen guide cylinder (4) is polygonal, elliptical or Or, the cross-sectional shape of the oxygen guide cylinder (4) includes a protruding section (29) protruding radially toward the inside of the oxygen guide cylinder, more preferably, the oxygen guide cylinder (4) The cross-sectional dimension of at least a part of the cylinder section expands gradually in the direction from the air inlet end to the air outlet end (5).
An oxygen mask, characterized in that it comprises an oxygen connector (9) and the oxygen mask body (15) according to any one of claims 1-16, wherein,

The oxygen joint (9) includes a connector (16) and a baffle (17), the connector has an oxygen inlet channel (18), and the baffle (17) has a baffle (19), the The baffle (17) is connected to the outlet of the oxygen inlet passage (18), and the deflector surface (19) is towards the outlet of the oxygen inlet passage (18);

The connector (16) is installed on the inlet end of the oxygen guide cylinder (4), and the outlet of the oxygen inlet passage (18) and the baffle (17) are located at the oxygen guide cylinder (4). )Inside.
The oxygen mask according to claim 17, characterized in that, a plurality of circumferentially spaced baffles (20) are formed on the baffle surface (19), and one of the adjacent baffles (20) A baffle space is formed between them; and/or, the connecting head (16) is rotatably installed on the inlet end of the oxygen guide cylinder (4).