Oxygen mask

Abstract

An oxygen mask (100), comprising a mask body (10). The mask body (10) has a crease line (11), which divides the mask body (10) into a support portion (12) and a deformable portion (13). The deformable portion (13) can be folded along the crease line (11) towards the side close to the support portion (12), so that the mask body (10) can be switched between a first state and a second state. In the first state, the mask body (10) covers the mouth and the nose, and at least part of the structure thereof is in sealing contact with the mandibular part of a patient's face; and in the second state, the mask body (10) covers the nose, and at least part of the structure thereof is in sealing contact with the philtrum of the patient's face.

Description

Oxygen mask

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202422619956.1, filed on October 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of medical device technology, and more specifically, to an oxygen mask. Background Technology

[0004] During a gastroscopy, medical staff need to insert a fiber optic sensor through the patient's mouth. An oxygen mask covers the patient's mouth. In existing technology, the oxygen mask has an opening through which medical staff guide the fiber optic sensor to the vicinity of the patient's mouth before inserting it into the patient's body. During this process, the fiber optic sensor rubs against the oxygen mask, affecting the medical staff's feel during insertion. Furthermore, because of the oxygen mask's coverage, any manipulation of the patient's mouth by the medical staff will affect the seal between the oxygen mask and the face, preventing the oxygen mask from providing timely oxygen to the patient.

[0005] Application content

[0006] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an oxygen mask that simplifies the operation of inserting a fiber optic sensor into the patient's mouth without affecting the normal oxygen supply to the patient, making it easier for medical staff to use the fiber optic sensor smoothly.

[0007] To achieve the above objectives, an oxygen mask is provided according to an embodiment of this application. The oxygen mask includes a mask body with fold lines dividing it into a support portion and a deformable portion. The deformable portion is foldable along the fold lines towards the support portion, allowing the mask body to switch between a first state and a second state.

[0008] In the first state, the mask body covers the mouth and nose and at least a portion of its structure is sealed to the lower jaw of the patient's face; in the second state, the mask body covers the nose and at least a portion of its structure is sealed to the philtrum of the patient's face.

[0009] According to the embodiments of this application, the oxygen mask can simplify the operation of medical staff to insert fiber optic sensors into the patient's mouth without affecting the normal oxygen supply to the patient, and facilitate the smooth use of fiber optic sensors by medical staff.

[0010] In addition, the oxygen mask according to the above embodiments of this application may also have the following additional technical features:

[0011] According to one embodiment of this application, when the mask body covers the patient's face, the support portion and the patient's face together define a first cavity having a first opening;

[0012] In the first state, the deformable part and the patient's face together define a second cavity with a second opening, and the first opening of the first cavity communicates with the second opening of the second cavity;

[0013] In the second state, the deformable part is folded and disposed within the first cavity, and together with the patient's face, defines a clearance cavity that communicates with the first opening.

[0014] According to one embodiment of this application, the mask body is a one-piece molded plastic part, wherein the thickness of the mask body at the support portion is much greater than the thickness of the mask body at the deformable portion.

[0015] According to one embodiment of this application, the mask body includes a cover and a deformable component, the cover and the deformable component being detachably fixedly connected, and the material used for the cover has a strength much greater than the material used for the deformable component.

[0016] According to one embodiment of this application, the deformable part includes a connecting portion, and the cover includes a mating portion, wherein the connecting portion and the mating portion cooperate to achieve a sealed connection between the deformable part and the cover.

[0017] According to one embodiment of this application, the connecting portion and the mating portion are stacked and bonded together in the thickness direction of the mask body.

[0018] According to one embodiment of this application, the crease line is located on the deformed part, the crease line coincides with the outline of the cover, or the crease line is located outside the outline of the cover.

[0019] According to one embodiment of this application, the oxygen mask further includes a sealing element comprising a sealing film disposed on the inner surface and / or outer surface of the mask body, and at least covering the crease line.

[0020] According to one embodiment of this application, the oxygen mask further includes an inflatable airbag, which is disposed on the edge of the mask body and engages with the patient's face. The inflatable airbag includes an inflation port and an inflation valve is provided at the inflation port.

[0021] According to one embodiment of this application, the support portion is provided with an oxygen hole, and the oxygen hole is provided with an oxygen delivery pipe connector;

[0022] And / or, the oxygen mask further includes fixing strips on both sides of the support portion, wherein the end of the fixing strip on one side of the support portion away from the mask body is connected to the end of the fixing strip on the other side away from the mask body, and the fixing strip is elastic.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of the structure of the oxygen mask covering the patient's face in the first state according to an embodiment of this application;

[0026] Figure 2 is a schematic diagram of the structure of the oxygen mask according to an embodiment of the present application covering the patient's face in a second state;

[0027] Figure 3 is a schematic diagram of the structure of the oxygen mask according to an embodiment of this application in the first state;

[0028] Figure 4 is a structural schematic diagram of the oxygen mask according to an embodiment of this application in the second state;

[0029] Figure 5 is a structural schematic diagram of the oxygen mask according to an embodiment of this application in the first state;

[0030] Figure 6 is a structural schematic diagram of the oxygen mask according to an embodiment of this application in the second state.

[0031] Reference numerals: Oxygen mask 100, mask body 10, crease line 11, support part 12, deformable part 13, first cavity 121, first opening 1211, second cavity 131, second opening 1311, clearance cavity 132, cover 2, mating part 21, deformable part 3, connecting part 31, oxygen port 4, inflatable airbag 5, fixing strap 6. Detailed Implementation

[0032] This application is based on the inventor's discoveries and understanding of the following facts and problems:

[0033] Before a painless gastroscopy or colonoscopy, patients will be given intravenous anesthesia. The central nervous system will be temporarily suppressed after intravenous anesthesia. An oxygen mask of 100% will be placed over the patient's face to increase the oxygen content in the patient's mouth and nose, improve the patient's blood oxygen saturation, help the patient breathe, and avoid hypoxia caused by the respiratory system not working properly.

[0034] Because medical staff need to insert a fiber optic sensor through the patient's mouth during gastroscopy, and the oxygen mask 100 covers the patient's mouth, in the existing technology, the oxygen mask 100 has an opening. Medical staff use the opening to send the fiber optic sensor to the vicinity of the patient's mouth and then insert it into the patient's body. During this process, the fiber optic sensor will rub against the oxygen mask 100, affecting the feel of the medical staff when inserting the fiber optic sensor. Furthermore, because the oxygen mask 100 covers the patient's mouth, the process of medical staff operating on the patient's mouth will affect the seal between the oxygen mask 100 and the face, and the oxygen mask 100 cannot provide timely oxygen to the patient.

[0035] Therefore, this application embodiment designs an oxygen mask 100 that can have different states. During medical staff operation, it covers the patient's nose to supply oxygen and exposes the patient's mouth outside the oxygen mask 100 to facilitate medical staff operation. When medical staff do not need to operate, it covers both the patient's mouth and nose to better supply oxygen to the patient. Thus, it can not only ensure that the patient can obtain sufficient oxygen throughout the examination process, maintain the patient's blood oxygen saturation, and ensure the patient's life safety, but also avoid the oxygen mask 100 from interfering with the medical staff's examination operations, and facilitate the smooth use of fiber optic sensors by medical staff.

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0037] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] The oxygen mask 100 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0040] As shown in Figures 1-6, the oxygen mask 100 according to an embodiment of this application includes: a mask body 10.

[0041] The mask body 10 covers the patient's face during the examination. The mask body 10 has a first state and a second state. In the first state, the mask body 10 covers the patient's mouth and nose. Since the oxygen mask 100 covers the patient's mouth and nose at the same time, it can increase the oxygen content near the patient's nose and mouth, provide sufficient oxygen to the patient, maintain the patient's blood oxygen saturation, and ensure the patient's life safety.

[0042] In the second state, the mask body 10 covers the nose. At this time, the oxygen mask 100 only covers the patient's nose, which can increase the oxygen content near the patient's nose, provide oxygen to the patient, maintain the patient's blood oxygen saturation, and ensure the patient's life safety. In addition, since the patient's mouth is no longer covered by the mask body 10, the oxygen mask 100 can avoid interfering with the medical staff's operation of inserting fiber optic sensors into the patient's mouth, making it easier for medical staff to use fiber optic sensors smoothly.

[0043] Specifically, the mask body 10 switches between two states by unfolding and folding. In order to ensure that the mask body 10 can change precisely between the first state and the second state during the folding process rather than deforming in other directions, the mask body 10 has a crease line 11, which divides the mask body 10 into a support part 12 and a deformable part 13.

[0044] The strength of the mask body 10 at the crease line 11 is different from the strength of the rest of the mask body 10. The strength at the crease line 11 is lower and it is more prone to deformation. During the folding process, medical staff can fold the deformable part 13 along the crease line 11 towards the side closer to the support part 12. The mask body 10 is bent at the crease line 11 so that the mask body 10 can switch between the first state and the second state.

[0045] In the first state, at least a portion of the structure of the mask body 10 is sealed and engaged with the patient's lower jaw. At this time, the at least portion of the structure of the mask body 10 that is sealed and engaged with the patient's lower jaw can surround the patient's mouth and, together with the remaining portion of the structure surrounding the patient's nose, define a space that can simultaneously cover the patient's mouth and nose. Thus, the mask body 10 can simultaneously cover the patient's nose and mouth, thereby increasing the oxygen content near the patient's nose and mouth, providing sufficient oxygen supply to the patient, maintaining the patient's blood oxygen saturation, and ensuring the patient's life safety.

[0046] In the second state, at least a portion of the mask body 10 is sealed to the philtrum of the patient's face. In this state, the at least portion of the mask body 10 that is sealed to the philtrum avoids obstructing the patient's mouth, and together with the remaining portion surrounding the patient's nose, defines a space that covers only the patient's nose. This increases the oxygen content near the patient's nose, providing oxygen to the patient, maintaining the patient's blood oxygen saturation, and ensuring the patient's safety. Furthermore, since the patient's mouth is no longer covered by the mask body 10, the oxygen mask 100 avoids interfering with medical personnel's procedures for inserting fiber optic sensors into the patient's mouth, facilitating the smooth use of the fiber optic sensors by medical personnel.

[0047] According to the embodiment of this application, the oxygen mask 100 can simplify the operation of medical staff to insert fiber optic sensors into the patient's mouth without affecting the normal oxygen supply to the patient, and facilitate the smooth use of fiber optic sensors by medical staff.

[0048] Referring to the embodiments shown in Figures 1-6, when the mask body 10 covers the patient's face, the support portion 12 and the patient's face together define a first cavity 121 with a first opening 1211, and the crease line 11 defines the first opening 1211. The first cavity 121 can at least cover the area above the patient's nose. By delivering oxygen into the first cavity 121, the oxygen content in the patient's nose can be increased, ensuring normal oxygen supply to the patient.

[0049] In the first state, the deformable part 13 and the patient's face together define a second cavity 131 with a second opening 1311. The first opening 1211 of the first cavity 121 communicates with the second opening 1311 of the second cavity 131, and the crease line 11 defines both the first opening 1211 and the second opening 1311. Thus, the deformable part 13 closes the first opening 1211, the support part 12 closes the second opening 1311, and the cavity formed by the first cavity 121 and the second cavity 131 is closed, allowing the oxygen mask 100 to stably supply oxygen to the patient.

[0050] In the second state, the mask body 10 is bent at the crease line 11, and the deformable part 13 is folded and disposed in the first cavity 121, and together with the patient's face, defines a clearance cavity 132 that communicates with the first opening 1211. In the second state, the deformable part 13 can close the first opening 1211, so that the first cavity 121 can be sealed, ensuring that the oxygen mask 100 can stably supply oxygen to the patient, increase the oxygen content near the patient's nose, provide oxygen to the patient, maintain the patient's blood oxygen saturation, and ensure the patient's life safety.

[0051] Since the deformable part 13 is folded and disposed inside the first cavity 121, the deformable part 13 occupies part of the space inside the first cavity 121 and defines a clearance cavity 132 with an opening. This opening overlaps with the first opening 1211. This part of the space can clear the patient's mouth, so that the patient's mouth is outside the coverage area of ​​the mask body 10. The patient's mouth is no longer covered by the mask body 10, which can prevent the oxygen mask 100 from affecting the medical staff's operation of inserting the fiber optic sensor into the patient's mouth, and facilitate the smooth use of the fiber optic sensor by the medical staff.

[0052] In addition to bending at the crease line 11, the deformation of the deformable part 13 is as follows: in the first state, the deformable part 13 protrudes outward from the crease line 11 towards the first cavity 121, and in the second state, it is recessed inward from the crease line 11 towards the first cavity 121. The deformable part 13 undergoes deformation with different bending states during the switching between the first state and the second state.

[0053] In some embodiments, in the first state, the second cavity 131 covers the patient's mouth and the first cavity 121 covers the patient's nose. Since the first opening 1211 is connected to the second opening 1311, the oxygen delivered into the first cavity 121 can enter the second cavity 131 through the first opening 1211 and the second opening 1311, thus delivering oxygen into the second cavity 131. The oxygen content in the second cavity 131 increases, thereby increasing the oxygen content near the patient's mouth.

[0054] In the second state, the first cavity 121 covers the patient's nose, the deformable part 13 is folded and disposed inside the first cavity 121 and located below the patient's nose, the cavity defined by the support part 12 and the deformable part 13 covers the patient's nose, and the oxygen mask 100 can stably supply oxygen to the patient by increasing the oxygen concentration near the patient's nose, maintain the patient's blood oxygen saturation, and ensure the patient's life safety.

[0055] In other embodiments, the second cavity 131 covers at least a portion of the patient's mouth, and the first cavity 121 covers another portion of the patient's mouth while simultaneously covering the area above the patient's nose. Since the first opening 1211 is connected to the second opening 1311, oxygen delivered into the first cavity 121 can enter the second cavity 131 through the first opening 1211 and the second opening 1311. Both the first cavity 121 and the second cavity 131 have a high oxygen concentration, which increases the oxygen content near the patient's nose and mouth, provides sufficient oxygen to the patient, maintains the patient's blood oxygen saturation, and ensures the patient's life safety.

[0056] In the second state, the first cavity 121 covers the area above the patient's nose and another part of the mouth. The deformable part 13 is folded and disposed inside the first cavity 121 and located below the patient's nose. The avoidance cavity 132 defined by the deformable part 13 isolates the other part of the mouth covered by the first cavity 121 from the cavity defined by the support part 12 and the deformable part 13. The cavity defined by the support part 12 and the deformable part 13 only covers the area above the patient's nose. The oxygen mask 100 can stably supply oxygen to the patient by increasing the oxygen concentration near the patient's nose, maintain the patient's blood oxygen saturation, and ensure the patient's life safety.

[0057] In some embodiments, the mask body 10 is a one-piece molded plastic part, wherein the thickness of the mask body 10 at the support portion 12 is much greater than the thickness of the mask body 10 at the deformable portion 13. The one-piece molded plastic part helps to ensure the sealing performance of the mask body 10. Furthermore, plastic materials have different properties under different thickness conditions. The support portion 12 is thicker, thus the support portion 12 has higher strength and hardness, and the structure of the support portion 12 of the mask body 10 is not easily deformed by external forces, ensuring that the mask body 10 can be stably supported above the face. The deformable portion 13 is thinner to reduce the strength of the mask body 10 at the deformable portion 13. The deformable portion 13 of the mask body 10 can deform under external forces without being damaged. There is a thickness difference at the junction of the deformable portion 13 and the support portion 12, and the crease formed here is more easily folded and deformed.

[0058] In other embodiments, as shown in Figures 5 and 6, the mask body 10 includes a shell 2 and a deformable member 3. The shell 2 is made of a material with significantly greater strength than the material used in the deformable member 3. The shell 2 and the deformable member 3 can be made of different materials. The shell 2 is made of a transparent material with high hardness and strength to support the mask body 10 and ensure that the mask body 10 can be stably supported above the face. The deformable member 13 can be made of a soft material with toughness and elasticity, such as thin plastic or rubber, to ensure that the deformable member 13 can fold and deform into the first cavity 121 or produce different bends. A certain degree of toughness ensures that the shape of the deformable member 13 remains consistent during multiple deformations, ensuring that the state of the mask body 10 can stably switch between the first state and the second state.

[0059] In some embodiments, the housing 2 and the deformable part 3 are detachably fixedly connected. Due to long-term deformation, the service life of the deformable part 3 is much shorter than that of the housing 2. The detachable fixed connection between the deformable part 3 and the housing 2 can increase the service life of the housing 2 part in the mask body 10. After the deformable part 3 is damaged, only the deformable part 3 needs to be replaced, which reduces the usage cost of the oxygen inhalation mask 100.

[0060] Referring to Figures 5 and 6, the deformable part 3 includes a connecting part 31, and the cover 2 includes a mating part 21. The connecting part 31 and the mating part 21 cooperate to achieve a sealed connection between the deformable part 3 and the cover 2.

[0061] In some embodiments, the connecting portion 31 and the mating portion 21 are stacked in the thickness direction of the mask body 10 to increase the connection area between the deformable member 3 and the cover 2, ensuring the stability of the connection between the cover 2 and the deformable member 3. The connecting portion 31 and the mating portion 21 can be connected by adhesive bonding. The adhesive bonding method is not limited to glue, Velcro, etc. Adhesive bonding can simplify the connection between the connecting portion 31 and the mating portion 21 and ensure the sealing of the connection between the connecting portion 31 and the mating portion 21.

[0062] As shown in Figures 5 and 6, the deformable part 3 needs to deform during the state change of the mask body 10. The deformation of the deformable part 3 includes two parts: one part is the bending deformation at the position of the crease line 11, and the other part is the bending deformation of the deformable part 13 inward or outward. The crease line 11 and the deformable part 13 are both located in the deformable part 3, so as to utilize the soft, tough and elastic material of the deformable part 3 for deformation. The crease line 11 coincides with the outline of the cover 2. The strength is higher at the cover 2 or the part where the cover 2 and the deformable part 3 coincide. The strength change is greater at the junction of the cover 2 and the deformable part 3. During the bending of the deformable part 3, the deformable part 3 is more likely to fold at the junction of the deformable part 3 and the cover 2, that is, at the outline of the cover 2.

[0063] In other embodiments, the crease line 11 may also be located outside the outline of the housing 2 to avoid the bending of the deformable part 3 being affected by the housing 2.

[0064] In some embodiments, the deformable member 3 undergoes different treatments on both sides of the crease line 11. For example, the side of the crease line 11 away from the deformable portion 13 is hardened, while the material of the deformable portion 13 remains soft and has toughness and elasticity. Alternatively, the deformable member 3 is thinned at the crease. When the deformable member 3 is deformed by external force, the thinned crease deforms first and bends towards the side closer to the support portion 12.

[0065] Furthermore, since the crease line 11 changes the most during the transformation process between the first and second states, and the strength at the crease is lower than that of the rest of the mask body 10, the crease is easily damaged during repeated folding, resulting in a reduction in the sealing performance of the mask body 10.

[0066] Therefore, the oxygen mask 100 also includes a sealing element, which includes a sealing film. The sealing film is disposed on the inner surface and / or outer surface of the mask body 10 and at least covers the crease line 11. The sealing film can be a polyvinyl chloride film. The sealing film of this material can maintain the sealing performance during multiple bending and deformation processes, has higher fatigue strength, and will not be damaged during multiple deformation and folding processes. It can ensure the sealing performance at the crease line 11 after damage occurs at the crease line 11.

[0067] In some embodiments, the sealant further includes a sealing strip, which is disposed at the connection between the housing 2 and the deformable member 3 to ensure the sealing performance at the connection between the housing 2 and the deformable member 3.

[0068] Referring to the embodiments shown in Figures 3-6, the oxygen mask 100 also includes an inflatable airbag 5. The inflatable airbag 5 is located on the edge of the mask body 10 and is engaged with the patient's face. The inflatable airbag 5 can ensure a stable fit and seal between the mask body 10 and the patient's face. For different patients' facial structures, the inflatable airbag 5 can adapt during inflation to ensure that it can fit different patients' different facial structures.

[0069] Furthermore, since the deformable part 13 matches the facial structure of the patient at different locations in the first and second states, in the first state the edge of the deformable part 13 matches the patient's lower jaw, and in the second state the edge of the deformable part 13 matches the patient's philtrum, the two different facial structures have significant differences in height and shape. In order to ensure that this part of the structure can seal with the patient's face in both the first and second states, the inflatable airbag 5 can compensate for the difference in height or shape between the patient's face and the edge of the mask body 10. Through the fit of the inflatable airbag 5, the airtightness of the oxygen mask 100 is ensured.

[0070] The inflatable airbag 5 includes an inflation port, and an inflation valve is provided at the inflation port. The inflation valve only allows gas to be inflated into the inflatable airbag 5 from the outside.

[0071] Referring to Figures 3-6, the support part 12 is provided with an oxygen port 4, and the oxygen port 4 is provided with an oxygen supply pipe connector. The oxygen supply machine supplies oxygen to the cavity defined by the mask body 10 through the oxygen supply pipe connector provided at the oxygen port 4. The oxygen port 4 is located on the support part 12, which can prevent the opening of the oxygen port 4 from affecting the switching of the mask body 10 between the first state and the second state.

[0072] Referring to Figures 1-6, the oxygen mask 100 also includes fixing strips 6 on both sides of the support portion 12. The end of the fixing strip 6 on one side of the support portion 12 away from the mask body 10 is connected to the end of the fixing strip 6 on the other side away from the mask body 10. The fixing strips 6 are elastic. During the patient intubation process, the patient always maintains a left lateral decubitus position, and it is difficult to fix the oxygen mask 100 on the patient's face. The setting of the fixing strips 6 can ensure the stability of the oxygen mask 100 on the patient's face and ensure that the oxygen mask 100 stably supplies oxygen to the patient.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An oxygen mask, wherein, include: The mask body has creases that divide it into a support portion and a deformable portion. The deformable portion can be folded along the creases towards the support portion, allowing the mask body to switch between a first state and a second state. In the first state, the mask body covers the mouth and nose and at least a portion of its structure is sealed to the lower jaw of the patient's face; in the second state, the mask body covers the nose and at least a portion of its structure is sealed to the philtrum of the patient's face.

2. The oxygen mask according to claim 1, wherein, When the mask body covers the patient's face, the support portion and the patient's face together define a first cavity with a first opening; In the first state, the deformable part and the patient's face together define a second cavity with a second opening, and the first opening of the first cavity communicates with the second opening of the second cavity; In the second state, the deformable part is folded and disposed within the first cavity, and together with the patient's face, defines a clearance cavity that communicates with the first opening.

3. The oxygen mask according to claim 1 or 2, wherein, The mask body is a one-piece molded plastic part, wherein the thickness of the mask body at the support part is much greater than the thickness of the mask body at the deformable part.

4. The oxygen mask according to any one of claims 1-3, wherein, The mask body includes a cover and a deformable component. The cover and the deformable component are detachably and fixedly connected. The material used for the cover has a strength much greater than that used for the deformable component.

5. The oxygen mask according to claim 4, wherein, The deformable component includes a connecting portion, and the cover includes a mating portion. The connecting portion and the mating portion cooperate to achieve a sealed connection between the deformable component and the cover.

6. The oxygen mask according to claim 5, wherein, The connecting part and the mating part are stacked and bonded together in the thickness direction of the mask body.

7. The oxygen mask according to any one of claims 4-6, wherein, The crease line is located on the deformed part, the crease line coincides with the outline of the cover, or the crease line is located outside the outline of the cover.

8. The oxygen mask according to any one of claims 1-7, wherein, It also includes a sealant comprising a sealing film disposed on the inner and / or outer surface of the mask body, and at least covering the crease line.

9. The oxygen mask according to any one of claims 1-8, wherein, It also includes an inflatable airbag, which is located on the edge of the mask body and is attached to the patient's face. The inflatable airbag includes an inflation port and an inflation valve is provided at the inflation port.

10. The oxygen mask according to any one of claims 1-9, wherein, The support is provided with an oxygen hole, and the oxygen hole is provided with an oxygen delivery pipe connector; And / or, the oxygen mask further includes fixing strips on both sides of the support portion, wherein one end of the fixing strip on one side of the support portion away from the mask body is connected to the other end of the fixing strip on the other side away from the mask body, and the fixing strip is elastic.

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