CN113893425A

CN113893425A - Oxygen mask body and oxygen mask

Info

Publication number: CN113893425A
Application number: CN202111265111.1A
Authority: CN
Inventors: 朱越; 冯军; 朱鹏; 冯威如
Original assignee: Beijing Aozhen Medical Technology Co ltd
Current assignee: Beijing Aozhen Medical Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-01-07

Abstract

The invention relates to the technical field of oxygen masks, and discloses an oxygen mask body and an oxygen mask. The oxygen mask body comprises a mask body, a face fitting edge and an oxygen guide cylinder, wherein the mask body comprises a breathing cavity and an oral-nasal area configured to correspond to the mouth and nose of a wearer; the face attaching edge is arranged at the peripheral edge of the mask body; the air inlet end of the oxygen guide cylinder is configured to be capable of being provided with an oxygen connector, the air outlet end of the oxygen guide cylinder is connected to the outer surface of the mask wall of the mouth-nose area and communicated with the breathing cavity, the edge of the cylinder opening of the air outlet end is lower than the inner surface of the mask wall of the mouth-nose area in the whole circle direction or is flush with the inner surface of the mask wall, so that oxygen in the peripheral area in the oxygen guide cylinder diffuses around the edge of the cylinder opening and continues to flow along the inner surface of the mask wall for diffusion, the oxygen flow strength directly flowing to the mouth-nose area of a wearer is effectively weakened, the airflow oppression feeling is remarkably reduced, the oxygen can be uniformly diffused in the mouth-nose area and the peripheral area of the wearer, and the use comfort level of the wearer is improved.

Description

Oxygen mask body and oxygen mask

Technical Field

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

Background

The existing oxygen mask usually comprises a mask body, an oxygen connector is arranged on the mask body and used for being connected with an oxygen delivery tube, wherein an oxygen guide tube extending out of the breathing cavity is arranged on the inner surface of the breathing cavity in the mask body, an oxygen inlet channel is arranged in the oxygen connector, and one end of the oxygen inlet channel is communicated with the oxygen delivery tube while the other end is communicated with the oxygen guide tube. Therefore, when in use, oxygen can enter the breathing cavity through the oxygen inlet channel in the oxygen tube and the oxygen joint and the oxygen guide cylinder in the breathing cavity in sequence so as to be used by a wearer.

However, the applicant researches in practice to find that in the existing oxygen mask, in actual use, a wearer always feels that oxygen is directly splashed in the mouth and nose area, and a wearer with sensitive partial skin can generate obvious airflow oppression feeling, so that the discomfort feeling is generated, and the comfort of the oxygen mask is reduced to a certain extent.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a novel oxygen mask body, which can significantly reduce the flow stress of oxygen, so that oxygen can be uniformly diffused in the nose and mouth of a wearer and the surrounding area thereof, thereby improving the comfort of the wearer.

In order to achieve the above object, the present invention provides an oxygen mask body comprising a mask body, a face-engaging edge, and an oxygen guiding canister, wherein the mask body comprises a breathing cavity and an oronasal region configured to correspond to the nose and mouth of a wearer; the face fit edge is arranged at the peripheral edge of the mask body; the air inlet end of the oxygen guide cylinder is configured to be provided with an oxygen connector, the air outlet end of the oxygen guide cylinder is connected to the outer surface of the mask wall of the mouth-nose area and communicated with the breathing cavity, and the cylinder mouth edge of the air outlet end is lower than or flush with the inner surface of the mask wall of the mouth-nose area in the whole circle direction.

In the technical scheme, because the oxygen mask body comprises the oxygen guide cylinder, the air outlet end of the oxygen guide cylinder is connected to the outer surface of the mask wall in the oral-nasal region and communicated with the breathing cavity, and the cylinder opening edge of the air outlet end is lower than or flush with the inner surface of the mask wall in the oral-nasal region in the whole circle direction, the oxygen flowing in the peripheral region in the oxygen guide cylinder is allowed to continuously flow along the inner surface of the mask wall in the oral-nasal region at the cylinder opening edge of the air outlet end to the periphery for diffusion. Therefore, when the oxygen mask body is used in practice, oxygen enters the air inlet end of the oxygen guide cylinder through the oxygen connector and flows along the oxygen guide cylinder, and when oxygen in the peripheral area of the oxygen guide cylinder flows to the cylinder opening edge of the air outlet end along the oxygen guide cylinder, the oxygen diffuses all around and continues to flow along the inner surface of the mask wall in the oral-nasal area for diffusion, and finally an oxygen ring which basically surrounds the oral-nasal area of a wearer is formed.

Preferably, the inner surface of the edge of the nozzle edge is smoothly connected with the inner surface of the mask wall through an arc surface protruding towards the breathing cavity in the whole circle direction.

Preferably, at least the mouth of the air outlet end of the oxygen guiding cylinder extends in a gradually expanding manner.

Preferably, a plurality of guide ribs which are arranged at intervals in the circumferential direction and extend along the axial direction of the oxygen guide cylinder are formed on the inner surface of the oxygen guide cylinder, a guide area is formed between every two adjacent guide ribs, and the guide ribs do not end before the inner surface of the mask wall.

More preferably, the circumferential spacing of the plurality of flow guide areas is the same; and/or the flow guide ribs are straight flow guide ribs or spiral flow guide ribs.

Preferably, the flow guiding ribs are sheet-shaped, and the height of at least part of the flow guiding ribs is gradually increased in the axial direction from the air inlet end to the air outlet end of the oxygen guiding cylinder; and/or the inner side surface of the flow guide rib facing the center of the oxygen guide cylinder is formed into an outer convex arc surface.

Preferably, the plurality of flow guide ribs are divided into a plurality of first flow guide ribs and a plurality of second flow guide ribs which are the same in number, the height of each first flow guide rib is larger than that of each second flow guide rib, and the first flow guide ribs and the second flow guide ribs are sequentially and alternately arranged.

Preferably, a transition region of the mask body between the nose and mouth region and the face attachment edge is provided with an air permeable structure, the air permeable structure includes a plurality of open openings arranged at intervals in a circumferential direction of the mask body, a plurality of the open openings are sized so that portions of the transition region between adjacent open openings form a connecting strip, and a reinforcing rib extending from the guide shell to the face attachment edge is formed on an inner surface of the connecting strip.

In addition, the invention provides an oxygen mask, which comprises an oxygen joint and the oxygen mask body as described in any of the above, wherein the oxygen joint comprises a connector and a deflection hood, the connector is provided with an oxygen inlet channel, the deflection hood is provided with a deflection concave surface, the deflection hood is connected to the outlet of the oxygen inlet channel, and the deflection concave surface faces to the outlet of the oxygen inlet channel; the connector is installed lead on the inlet end of oxygen section of thick bamboo, the export of oxygen inlet channel with the baffling cover is located lead in the oxygen section of thick bamboo.

In the technical scheme, because the baffle cover of the oxygen connector is provided with a baffle concave surface, the baffle cover is connected at the outlet of the oxygen inlet channel, the baffle concave surface faces the outlet of the oxygen inlet channel, and the outlet of the oxygen inlet channel and the baffle cover are positioned in the oxygen guide cylinder, so that the oxygen flow flowing out of the outlet of the oxygen inlet channel contacts with the baffle concave surface, the baffle concave surface can diffuse the oxygen flow to the periphery by utilizing the concave surface shape of the baffle concave surface to weaken the oxygen flow strength, so that the oxygen flow flows into the oxygen guide cylinder from the periphery of the baffle concave surface and mainly flows forwards in the peripheral area of the oxygen guide cylinder, therefore, as mentioned above, because the cylinder opening edge of the oxygen guide cylinder at the peripheral area is lower than or flush with the inner surface of the mask wall of the oral nose area in the whole circle direction, the oxygen flowing in the peripheral area of the oxygen guide cylinder at the cylinder opening edge of the oxygen outlet end continues to flow to the periphery along the inner surface of the mask wall of the oral nose area to diffuse, and finally, an oxygen ring which basically surrounds the mouth and nose area of the wearer is formed, so that the oxygen flow strength which directly flows to the mouth and nose area of the wearer can be further effectively weakened, the air flow oppression of oxygen can be remarkably reduced, the oxygen can be uniformly diffused in the mouth and nose area of the wearer and the surrounding area of the mouth and nose area of the wearer, and the use comfort of the wearer is improved.

Preferably, a plurality of circumferentially spaced baffle plates are formed on the baffle concave surface, and a baffle space is formed between adjacent baffle plates; and/or the connecting head can be rotatably arranged on the air inlet end of the oxygen guide cylinder.

Finally, the present invention provides an oxygen therapy device comprising an oxygen supply apparatus, an oxygen tube and an oxygen mask as described in any of the above, wherein the oxygen supply apparatus is in communication with the oxygen inlet channel via the oxygen tube.

Drawings

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

Fig. 2 is a perspective view of the oxygen mask body of fig. 1 from another perspective.

FIG. 3 is an enlarged partial cross-sectional structural schematic view of one location of the oxygen mask body of FIG. 1.

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

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

Fig. 6 is a perspective view of an oxygen mask according to an embodiment of the present invention, wherein an oxygen tube is connected to the oxygen connector.

FIG. 7 is an enlarged partial cross-sectional structural schematic view of a location of an oxygen mask provided in accordance with an embodiment of the present invention.

FIG. 8 is a perspective view of an oxygen mask with a view angle of an oxygen connector according to an embodiment of the present invention.

Fig. 9 is a perspective view of another perspective view of the oxygen connector of fig. 8.

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

Fig. 11 is a perspective view of another perspective view of the oxygen connector of fig. 10.

Fig. 12a-12c are simulated views of a first flow of oxygen into the oxygen mask of fig. 6.

Fig. 13a-13c are simulated views of a second flow of oxygen into the oxygen mask of fig. 6.

Fig. 14a-14c are simulated views of a third flow of oxygen into the oxygen mask of fig. 6.

Fig. 15a-15c are simulated views of a fourth flow of oxygen into the oxygen mask of fig. 6.

Fig. 16a-16c are simulated views of a fifth flow of oxygen into the oxygen mask of fig. 6.

Description of the reference numerals

1-mask body, 2-mouth-nose area, 3-face joint edge, 4-oxygen guide cylinder, 5-air outlet end, 6-mask wall outer surface, 7-cylinder mouth edge, 8-mask wall inner surface, 9-oxygen connector, 10-open opening, 11-first flow guide rib, 12-second flow guide rib, 13-connecting bar, 14-reinforcing rib, 15-oxygen mask body, 16-connecting head, 17-baffle cover, 18-oxygen inlet channel, 19-baffle concave surface, 20-baffle plate, 21-oxygen delivery pipe, 22-oxygen mask, 23-arc surface, 24-central support bar and 25-support bar.

Detailed Description

In the following detailed description of the embodiments, reference is made to the accompanying drawings, which form a part hereof. The drawings show, by way of example, specific embodiments in which the invention may be practiced. The embodiments shown 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 terminology, such as "lower," "upper," "left," "right," etc., is used with reference to the orientation of the drawings as described. Because components of embodiments of the present invention can be implemented in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

Referring to fig. 1, 2 and 3, an object of the present invention is to provide an oxygen mask body 15, the oxygen mask body 15 comprising a mask body 1, a face-engaging edge 3 and an oxygen guiding cylinder 4, wherein the mask body 1 comprises a breathing cavity and an oronasal region 2 configured to correspond to the nose and mouth of a wearer, the face-engaging edge 3 is disposed at the peripheral edge of the mask body 1, the air inlet end of the oxygen guiding cylinder 4 is configured to be capable of mounting an oxygen connector 9 (i.e., the oxygen mask body 15 may be a separate product without the oxygen connector 9, in actual use, or when assembled to form an oxygen mask, the oxygen connector 9 may be mounted at the air inlet end of the oxygen guiding cylinder 4), the air outlet end 5 of the oxygen guiding cylinder 4 is connected to the mask wall outer surface 6 of the oronasal region 2 and communicates with the breathing cavity, the breathing cylinder rim 7 of the air outlet end is lower than or flush with the mask wall inner surface 8 of the oronasal region 2 in a full circle direction, that is, the mouth rim 7 of the outlet end does not protrude over the inner face 8 of the mask wall in the oronasal region 2 over the entire circumference.

In this oxygen mask body 15, since the oxygen mask body 15 includes the oxygen guiding cylinder 4, the outlet end 5 of the oxygen guiding cylinder 4 is connected to the mask wall outer surface 6 of the oronasal region 2 and communicates with the breathing chamber, and the cylinder mouth rim 7 of the outlet end 5 is lower than or flush with the mask wall inner surface 8 of the oronasal region 2 in the entire circle direction, which allows the oxygen flowing at the peripheral region inside the oxygen guiding cylinder 4 to continue to flow peripherally along the mask wall inner surface 8 of the oronasal region 2 at the cylinder mouth rim 7 of the outlet end 5 for diffusion. Thus, in practical use of the oxygen mask body 15, oxygen enters the air inlet end of the oxygen guiding cylinder 4 through the oxygen connector 9 (refer to fig. 6) and flows along the oxygen guiding cylinder 4, and when oxygen in the peripheral region in the oxygen guiding cylinder 4 flows to the cylinder mouth edge 7 of the air outlet end 5 along the oxygen guiding cylinder 4, the oxygen diffuses all around and continues to flow along the inner surface 8 of the mask wall in the oronasal region 2 for diffusion, and finally an oxygen ring substantially surrounding the oronasal region 2 of the wearer is formed, which can effectively weaken the intensity of oxygen flow directly flowing to the oronasal region 2 of the wearer, thereby significantly reducing the airflow oppression of the oxygen, enabling the oxygen to uniformly diffuse in the oronasal region and the peripheral region of the wearer, and improving the comfort level of the wearer.

In the oxygen mask body 15, in one embodiment, the angle between the inner surface of the rim of the nozzle rim 7 and the inner surface 8 of the mask wall may be 180 ° to form a flush transition, or the angle between the inner surface of the rim of the nozzle rim 7 and the inner surface 8 of the mask wall may be 180 ° to 270 ° to form a non-flush transition, which may allow oxygen in the peripheral region of the oxygen guide tube 4 to diffuse around as it flows along the oxygen guide tube 4 to the nozzle rim 7 of the outlet end 5 and continue to flow along the inner surface 8 of the mask wall of the oronasal region 2 to diffuse further.

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 3, the rim inner surface of the mouthpiece rim 7 is smoothly connected to the mask wall inner surface 8 through an arc surface 23 protruding toward the breathing chamber in the entire circumferential direction, so that the oxygen in the peripheral region inside the oxygen guiding cylinder 4 smoothly and smoothly flows over the arc surface 23 at the mouthpiece rim 7 through the arc surface 23, smoothly flows onto the mask wall inner surface 8 of the oronasal region 2 while changing direction to diffuse all around, and continues to flow to continue diffusion. Thus, the arcuate surface 23 between the rim inner surface of the nozzle rim 7 and the mask wall inner surface 8 can allow a smooth flow of oxygen from the rim inner surface to the mask wall inner surface 8. Of course, the curvature of the arc-shaped surface 23 can be specifically selected according to actual requirements.

In addition, in the oxygen mask body 15, the oxygen guiding cylinder 4 may be an equal diameter cylinder, that is, the inner diameter of the oxygen guiding cylinder 4 is the same from the air inlet end to the air outlet end 5. Alternatively, in order to facilitate the diffusion of the oxygen flow, referring to fig. 1, 2 and 3, at least the mouth of the outlet end 5 of the oxygen guiding cylinder 4 is extended gradually, for example, the mouth of the outlet end 5 may be formed in a horn shape. For example, the oxygen guide cylinder 4 may include a constant diameter cylinder section and a diverging cylinder section, or the gas guide cylinder 4 may be integrally formed as a diverging cylinder from the gas inlet end to the gas outlet end. Thus, the oxygen in the peripheral area of the oxygen guide cylinder 4 is easier to diffuse to the periphery at the gradually expanded cylinder opening. For example, from a diverging nozzle, through the arcuate surface 23, and onto the mask wall inner surface 8.

In addition, in this oxygen mask body 15, oxygen guide tube 4 can be a circular section of thick bamboo, or can be a polygon section of thick bamboo, can pass through arc transition limit between each limit of a polygon section of thick bamboo and connect, refer to fig. 4, and oxygen guide tube 4 is a triangle section of thick bamboo, passes through arc transition limit smooth connection between the adjacent limit.

In addition, in the oxygen mask body 15, in one embodiment, the inner surface of the oxygen guiding cylinder 4 may be smooth and flat as a whole, for example, referring to fig. 1, the inner surface of the oxygen guiding cylinder 4 may not be provided with a flow guiding rib. Alternatively, in another embodiment, referring to fig. 4, a plurality of guiding ribs arranged at intervals in the circumferential direction and extending along the axial direction of the oxygen guiding cylinder are formed on the inner surface of the oxygen guiding cylinder 4, a guiding area is formed between adjacent guiding ribs, and the guiding ribs terminate before the inner surface 8 of the mask wall, that is, the guiding ribs do not protrude from the inner surface 8 of the mask wall, so that each guiding rib partitions the oxygen flow in the peripheral area inside the oxygen guiding cylinder 4, so that the oxygen flow flows forward in each guiding area, and the partitioning effect of the guiding ribs can further weaken the oxygen flow strength.

In addition, each flow guiding rib can be arranged according to actual needs, so that the circumferential intervals of the plurality of flow guiding areas are different, or the circumferential intervals of some flow guiding areas in the plurality of flow guiding areas are different, and the circumferential intervals of other flow guiding areas in the plurality of flow guiding areas are the same. Alternatively, in one embodiment, the plurality of flow guiding areas, i.e., all flow guiding areas, have the same circumferential spacing, which may result in substantially the same flow guiding area in each flow guiding area, which may result in more uniform oxygen flow in the peripheral region of the oxygen guiding cylinder 4.

In addition, in the oxygen mask body, the flow guide ribs may have various shapes, for example, may have a triangular shape or a trapezoidal shape, or may have a sheet shape. In addition, at least a part of the height of the flow guiding ribs gradually increases in the axial direction from the inlet end to the outlet end of the oxygen guiding cylinder 4 (as shown by the arrows in fig. 5), referring to fig. 5, so that the height of the flow guiding ribs is higher at the outlet end position, and the depth of the flow guiding areas is larger, which can better separate and guide the oxygen flow, further weakening the oxygen flow strength, and making the oxygen flow in each flow guiding area more easily flow along the inner surface 8 of the mask wall.

In addition, as shown in fig. 5, the inner side surface of the flow guiding rib facing to the center of the oxygen guiding cylinder is formed into an outer convex arc surface, and the outer convex arc surface is more beneficial to guiding the oxygen flow to flow forwards. For example, the inner side surface of the axially straight extending sheet-like flow guide rib facing the center of the oxygen guide cylinder is formed as an outer convex arc surface.

In addition, the heights of the flow guide ribs can be the same or different. For example, in one embodiment, referring to fig. 4, the 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, the number of the first flow guide ribs 11 is the same as the number of the second flow guide ribs 12, the height of the first flow guide ribs 11 is greater than that of the second flow guide ribs 12, and the first flow guide ribs 11 and the second flow guide ribs 12 are sequentially and alternately arranged. For example, in fig. 4, three first flow guiding ribs 11 and three second flow guiding ribs 12 are alternately arranged once, so that the three first flow guiding ribs 11 can effectively separate the oxygen flow in the peripheral region of the oxygen guiding cylinder 4, and between the adjacent first flow guiding ribs 11, one second flow guiding rib 12 can further separate the oxygen flow between the adjacent first flow guiding ribs 11, and of course, because the height of the second flow guiding rib 12 is smaller, the oxygen flows separated by the second flow guiding ribs 12 can be mutually pulled on the surface to rapidly flow forward.

In addition, the flow guide rib can have various extending modes, for example, the flow guide rib can be a straight flow guide rib which extends straightly, or can be a spiral flow guide rib which extends spirally, or can be a non-spiral flow guide rib which extends in a curve. For example, in fig. 4, the air guide ribs are straight air guide ribs. In addition, the spiral flow guiding ribs can guide the oxygen flow in the peripheral area in the oxygen guiding cylinder 4, so that the oxygen flow spirally flows forwards to improve the flow uniformity of the oxygen flow, and the oxygen flow can flow into the inner surface 8 of the mask wall in a certain spiral direction when leaving the cylinder opening edge 7, for example, the oxygen flow can flow through the arc-shaped surface 23 in a certain spiral direction and flow into the inner surface 8 of the mask wall. This may further enhance the diffusivity of the oxygen flow to enhance the uniformity of mixing of the oxygen flow with the air entering the breathing chamber.

In addition, referring to fig. 1, 2 and 3, the transition region of the mask body 1 between the oronasal region 2 and the face engaging edge 3 is provided with an air permeable structure. The ventilation structure can allow the exhaled air of the wearer to be exhausted to the external environment, and in addition, air in the external environment is also allowed to enter the breathing cavity, so that the wearer can have the feeling similar to natural breathing when wearing the oxygen mask body, and the feeling of respiratory urgency is not generated.

Of course, it should be noted that the air permeable structure may have various types, for example, in one type of the air permeable structure, the air permeable structure may be a plurality of air holes formed in a part of the transition region in a gathering manner, and of course, the number, size and shape of the air holes may be set according to actual requirements. Alternatively, in another type of the air permeable structure, referring to fig. 1 and 2, the air permeable structure includes a plurality of openings 10 arranged at intervals in the circumferential direction of the mask body 1, the plurality of openings 10 are sized such that the transition region between the adjacent openings 10 is formed as a connecting strip 13, and a reinforcing rib 14 extending from the guide shell 4 to the face attaching edge 3 is formed on the inner surface of the connecting strip 13. That is, the open openings 10 may have a large size, and in addition, the number and shape of the open openings 10 may be set according to the requirement, for example, the number of the open openings 10 may be 3, 4 or 5, and the shape may be a circular hole, a square hole or an elliptical hole, for example, the shape of each open opening 10 may be as shown in fig. 1, 2 and 6. The open mouth 10 may allow the wearer to speak and drink naturally. For example, the open opening 10 under the mask body 1 may allow the wearer to drink directly with a cup or may allow a straw to pass through so that the wearer drinks through the straw.

In addition, in the oxygen mask body 15, the oxygen mask body 15 may be made of a soft material, so that the oxygen mask body 15 may be deformed to adapt to the face shape change of different wearers. Alternatively, the oxygen mask body 15 may be made of a hard material, and in this case, the face attachment edge 3 may have flexibility so as to be more suitable for being worn by different wearers, and the soft face attachment edge 3 may adapt to the face shape change of different wearers.

Another object of the present invention is to provide an oxygen mask 22, referring to fig. 6 and 7, the oxygen mask 22 comprises an oxygen connector 9 and an oxygen mask body 15 as described in any of the above, wherein the oxygen connector 9 comprises a connector 16 and a baffle 17, the connector has an oxygen inlet channel 18, the baffle 17 has a concave baffle surface 19, the baffle 17 is connected to the outlet of the oxygen inlet channel 18, and the concave baffle surface 19 faces the outlet of the oxygen inlet channel 18; the connector 16 is arranged on the air inlet end of the oxygen guide cylinder 4, and the outlet of the oxygen inlet channel 18 and the baffle cover 17 are positioned in the oxygen guide cylinder 4.

In this oxygen mask 22, since the baffle cover 17 of the oxygen connector 9 has the concave baffle surface 19, the baffle cover 17 is connected at the outlet of the oxygen inlet passage 18 and the concave baffle surface 19 faces the outlet of the oxygen inlet passage 18, and the outlet of the oxygen inlet passage 18 and the baffle cover 17 are located in the oxygen guiding cylinder 4, which can make the oxygen flow flowing out from the outlet of the oxygen inlet passage 18 contact the concave baffle surface 19, the concave baffle surface 19 can diffuse the oxygen flow to the periphery by its own concave shape to weaken the oxygen flow strength, so that the oxygen flow flows into the oxygen guiding cylinder 4 from the periphery of the concave baffle surface 19 and mainly flows forward in the peripheral area of the oxygen guiding cylinder 4, for example, referring to the edge part of the view showing the oxygen flow in fig. 12a, so that, as described above, since the cylinder outlet edge 7 of the outlet end 5 of the oxygen guiding cylinder 4 is lower than or flush with the mask wall inner surface 8 of the oral-nasal area 2 in the whole circle direction, that is, the inner surface 8 of the mask wall does not protrude from the oral-nasal region 2, so that the oxygen flowing in the peripheral region of the oxygen guiding cylinder 4 continues to flow along the inner surface 8 of the mask wall in the oral-nasal region 2 at the rim 7 of the mouth of the air outlet end 5 to spread, and finally forms an oxygen ring substantially surrounding the oral-nasal region of the wearer, which can further effectively weaken the flow intensity of the oxygen directly flowing to the oral-nasal region of the wearer, thereby significantly reducing the flow pressure of the oxygen, enabling the oxygen to uniformly spread in the oral-nasal region and the peripheral region of the wearer, and improving the comfort of the wearer.

In addition, in this oxygen mask, the shape of the baffle shield 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 can be omitted from the concave baffle surface 19 of the baffle housing 17. Alternatively, with reference to one embodiment described with reference to fig. 8 and 9 and another embodiment shown in fig. 10 and 11, the concave baffle surface 19 is formed with a plurality of circumferentially spaced baffle plates 20, and adjacent baffle plates 20 define baffle spaces therebetween. Thus, the oxygen flow is divided into a plurality of smaller oxygen flows deflected in the deflecting space by the plurality of flow baffles 20 after contacting the concave deflecting surface 19, and the plurality of smaller oxygen flows flow edgewise along the deflecting space and enter the peripheral region of the oxygen guide 4, so that the flow baffles 20 can sufficiently disperse the oxygen flow entering through the oxygen inlet passage 18 to further weaken the intensity of the oxygen flow. In addition, the plurality of baffle plates 20 may be evenly distributed at circumferential intervals, or unevenly distributed.

In addition, in the oxygen mask, the oxygen joint 9 may have various types. For example, in one type, referring to fig. 8 and 9, a central support rod 24 may extend from a central position of the internal channel of the connecting head 16, an annular oxygen inlet channel 18 is formed between an inner surface of the internal channel of the connecting head 16 and an outer surface of the central support rod 24, a baffle housing 17 is connected to the extending end of the central support rod 24, and a plurality of baffle plates 20 are uniformly arranged on the baffle concave surface 19 of the baffle housing 17 at circumferential intervals. Or, referring to fig. 10 and 11, a plurality of support bars 25 are axially disposed on the outlet end face of the channel wall of the oxygen inlet channel 18, the edge of the baffle housing 17 is connected to the plurality of support bars 25, and since the plurality of support bars 25 are disposed on the outlet end face of the oxygen inlet channel 18, the space occupied by the oxygen inlet channel 18 can be avoided, so that the oxygen flow can flow in the oxygen inlet channel 18 more easily, and in addition, when the oxygen flow flows out from the outlet end of the oxygen inlet channel 18, a part of the oxygen can be separated by the plurality of support bars 25 when diffusing to the periphery, so that the oxygen can pass through the space between the adjacent support bars 25, which can further reduce the intensity of the oxygen flow, and similarly, a plurality of baffle plates 20 are uniformly disposed on the baffle concave surface 19 of the baffle housing 17 at circumferential intervals. Of course, in addition to the exemplary embodiment shown in fig. 8 and 9 and the exemplary embodiment shown in fig. 10 and 11, the baffle 17 can also be arranged on the connection head 16 in other ways, for example, a connection strip is arranged on the outer surface of the connection head 16, and the outer surface of the baffle 17 is connected to the connection strip, which also makes it possible to fixedly connect the baffle 17.

In addition, in the oxygen mask 22, the connector 16 may be fixedly mounted on the air inlet end of the oxygen guide 4. Alternatively, the connector 16 can be rotatably mounted on the air inlet end of the oxygen guiding cylinder 4, so that the wearer can rotate the connector 16 according to his/her needs to adjust the position of the oxygen mask 22 relative to the oxygen therapy tube 21. For example, when the wearer needs to lie down, the connector 16 can be rotated to adjust the relative position between the oxygen mask 22 and the oxygen tube 21, thereby improving comfort.

Furthermore, the present invention provides an oxygen therapy device comprising an oxygen supply apparatus (not shown) communicating with the oxygen inlet passage 18 through the oxygen supply tube 21, the oxygen supply apparatus being capable of providing a flow of oxygen, an oxygen supply tube 21 and an oxygen mask 22 as described in any of the above.

Fig. 12a-16c are simulated views of different flow rates of oxygen into the oxygen mask of fig. 6. It can be seen that when the oxygen flow entering from the oxygen inlet passage 18 contacts the concave baffle surface 19 of the baffle housing 17 at different flow rates, the concave baffle surface 19 can diffuse the oxygen flow to the periphery to weaken the intensity of the oxygen flow due to the baffle effect of the concave baffle surface 19, so that the oxygen flow flows into the oxygen guiding cylinder 4 from the periphery of the concave baffle surface 19 and mainly flows forward in the peripheral area of the oxygen guiding cylinder 4, for example, as shown in the edge portion of the view of fig. 12a, at which time, since the opening edge 7 of the air outlet end 5 of the oxygen guiding cylinder 4 is lower than or flush with the inner surface 8 of the mask wall in the oral-nasal area 2 in the whole circle direction, the oxygen flowing in the peripheral area of the oxygen guiding cylinder 4 continues to flow to the periphery along the inner surface 8 of the mask wall in the oral-nasal area 2 at the opening edge 7 of the air outlet end 5, for example, as shown in fig. 12c, In fig. 13c, 14c, 15c and 16c, the oxygen flow shown at the edge portion of the view will follow the inner surface 8 of the mask wall, for example, the oxygen flow shown in fig. 12 b-16 b follows the inner surface 8 of the mask wall, which ultimately forms an oxygen ring substantially around the oronasal region of the wearer, which may further effectively weaken the intensity of the oxygen flow directly to the oronasal region of the wearer, thereby significantly reducing the flow constriction of oxygen, enabling oxygen to be uniformly diffused to the oronasal region and the surrounding region of the wearer, and improving the comfort of use for the wearer.

It will be appreciated by persons skilled in the art that the above embodiments are illustrative and not restrictive. Different features which are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the drawings, the specification, and the claims. Any reference signs in the claims shall not be construed as limiting the scope. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims

1. An oxygen mask body, comprising:

a mask body (1), the mask body (1) comprising a breathing cavity and an oronasal region (2) configured to correspond to an oronose of a wearer;

a face engaging edge (3), the face engaging edge (3) being provided at an outer peripheral edge of the mask body (1);

lead an oxygen section of thick bamboo (4), the inlet end configuration of leading an oxygen section of thick bamboo (4) is for can installing oxygen joint (9), give vent to anger end (5) and connect on the face guard wall surface (6) of the nose area of mouth (2) and with the breathing cavity intercommunication, the nozzle rim (7) of the end of giving vent to anger is less than in the whole circle direction face guard wall internal surface (8) of the nose area of mouth (2) or parallel and level with it.

2. The oxygen mask body according to claim 1, wherein the rim inner surface of the mouthpiece rim (7) is smoothly connected to the mask wall inner surface (8) in a full circle direction by an arc-shaped face that is convex toward the breathing chamber.

3. The oxygen mask body according to claim 1, wherein at least the mouth of the outlet end (5) of the oxygen guiding canister (4) is divergent.

4. The oxygen mask body according to any one of claims 1 to 3, wherein the oxygen guiding cylinder (4) has a plurality of circumferentially spaced ribs formed on an inner surface thereof and extending in an axial direction of the oxygen guiding cylinder, and adjacent ribs form flow guiding areas therebetween, and the ribs terminate before the inner surface (8) of the mask wall.

5. The oxygen mask body of claim 4, wherein the plurality of flow guide areas are equally circumferentially spaced; and/or the flow guide ribs are straight flow guide ribs or spiral flow guide ribs.

6. The oxygen mask body according to claim 4, wherein the flow guiding ribs are sheet-shaped, and at least part of the flow guiding ribs gradually increase in height in an axial direction from an air inlet end to an air outlet end of the oxygen guiding cylinder (4);

and/or the presence of a gas in the gas,

the inner side surface of the flow guide rib facing the center of the oxygen guide cylinder is formed into an outer convex arc surface.

7. The oxygen mask body according to claim 4, wherein the plurality of flow guiding ribs are divided into a plurality of first flow guiding ribs (11) and a plurality of second flow guiding ribs (12) which are the same in number, the height of the first flow guiding ribs (11) is greater than that of the second flow guiding ribs (12), and the first flow guiding ribs (11) and the second flow guiding ribs (12) are sequentially and alternately arranged.

8. The oxygen mask body according to claim 1, wherein a transition region of the mask body (1) between the oronasal region (2) and the face engaging edge (3) is provided with a ventilation structure comprising a plurality of open openings (10) spaced apart in a circumferential direction of the mask body (1), a plurality of the open openings (10) being sized such that portions of the transition region between adjacent open openings (10) are formed as connecting strips (13), and reinforcing ribs (14) extending from the baffle cylinder (4) to the face engaging edge (3) are formed on an inner surface of the connecting strips (13).

9. An oxygen mask, comprising an oxygen connection (9) and an oxygen mask body (15) according to any one of claims 1 to 8, wherein,

the oxygen connector (9) comprises a connector (16) and a deflection cover (17), the connector is provided with an oxygen inlet channel (18), the deflection cover (17) is provided with a deflection concave surface (19), the deflection cover (17) is connected at the outlet of the oxygen inlet channel (18), and the deflection concave surface (19) faces to the outlet of the oxygen inlet channel (18);

the connector (16) is installed on the air inlet end of the oxygen guide cylinder (4), the outlet of the oxygen inlet channel (18) and the baffle cover (17) are located in the oxygen guide cylinder (4).

10. The oxygen mask according to claim 9, wherein the concave baffle surface (19) is formed with a plurality of circumferentially spaced baffle plates (20) and adjacent ones of the baffle plates (20) define baffle spaces therebetween; and/or the connecting head (16) can be rotatably arranged on the air inlet end of the oxygen guide cylinder (4).