Multifunctional mask of noninvasive ventilator

Abstract

The invention belongs to the technical field of medical equipment, discloses a multifunctional mask of a noninvasive ventilator, and aims to solve the problems that a traditional mask easily causes pressure sores on the face of a user and easily causes abnormal ventilation and even suffocation risks when the mask is worn abnormally. According to the multifunctional mask of the noninvasive ventilator, the pressure sore prevention assembly is arranged on the mask ring body, interactive pressure bearing of the massage air bag and the ring body is achieved by means of air pressure changes during breathing, and the pressure sore prevention assembly is used for relieving oppression of the mask on facial tissue to prevent pressure sores; an anti-suffocation assembly is arranged on the outer end face of the ring body and close to the lower jaw of the face, the emergency airway is triggered to be opened according to whether the air pressure in the mask is abnormal or not, so that air in the mask is communicated with the outside, and the emergency airway is provided for preventing suffocation when ventilation of the mask is abnormal. According to the multifunctional mask of the noninvasive ventilator, pressure sores and suffocation can be effectively prevented, the comfort and safety during mask wearing are improved, and the multifunctional mask has wide application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a multi-functional mask for non-invasive ventilators. Background Art

[0002] The multi-functional mask for non-invasive ventilators, as one of the key devices in the modern medical field, plays an indispensable role in non-invasive ventilation treatment, especially suitable for users who do not require endotracheal intubation or tracheotomy. During the treatment process, users often need to wear this mask for a long time to ensure continuous and effective ventilation support. However, the design of traditional masks has many deficiencies, which not only affect the comfort of users but also may have a negative impact on the treatment effect.

[0003] The main problem of traditional masks is that they are prone to compress the facial skin of users, especially sensitive areas such as the bridge of the nose and cheeks. Prolonged compression may lead to poor blood circulation and thus cause pressure sores. These pressure sores not only bring great pain to users but also may affect the rehabilitation process due to treatment interruption. In addition, the appearance of pressure sores may increase the risk of infection, further threatening the health of users.

[0004] In addition, there are also hidden dangers in the fixation and sealing of traditional masks. If the mask is not fixed firmly or the sealing performance is poor, situations such as displacement or air leakage may occur during the breathing process of users. Displacement may cause the mask to not fit tightly against the face, thereby affecting the ventilation effect; while air leakage may reduce the ventilation efficiency and even pose an asphyxiation risk. These safety hazards seriously threaten the life safety of users.

[0005] After retrieval, the Chinese patent with the publication number CN118416359A proposed a non-invasive ventilator mask, which is provided with a pressure sore prevention component and an auxiliary component on the mask body to relieve facial pressure and prevent the occurrence of pressure sores. At the same time, it is also provided with a monitoring component and a controller to collect the environmental data inside the mask and adjust the pressure sore prevention component through the controller. However, adding the monitoring component and the controller increases the weight of the mask body on the one hand, makes the structure complex and inconvenient to use, and is more likely to cause facial pressure sores. On the other hand, it increases the cost of the mask and is not conducive to popularization. Moreover, it cannot solve the problem of preventing asphyxiation when the air pressure inside the mask is abnormal.

[0006] After retrieval, the Chinese patent with the announcement number CN108671356B proposed a multi-functional non-invasive ventilator mask, which is provided with a pressure sore prevention and sealing device at the rear end face of the mask ring to fit and seal with the patient's face, and uses the method of changing the fitting position and conducting heat to cool down to achieve the effect of preventing pressure sores. However, the air supply of the ventilator is pressurized and supplied into the mask housing after passing through an annular elastic trachea, the device structure is complex and inconvenient to use. In addition, it cannot solve the problem of preventing asphyxiation when the air pressure inside the mask is abnormal.

[0007] Therefore, there is an urgent need in clinical practice for a ventilator mask that can effectively prevent pressure ulcers and asphyxia, so as to improve the comfort and safety of users when using the ventilator, effectively reduce the incidence of complications, reduce the waste of medical resources, and has important social and economic significance. Summary of the Invention

[0008] The purpose of the present invention is to provide a multi-functional mask for non-invasive ventilators to solve the problems raised in the above-mentioned background technology.

[0009] The main design idea of the present invention: Trigger the opening of the emergency airway based on whether the air pressure inside the mask changes abnormally, so that the inside of the mask is connected to the outside air flow, ensuring the normal breathing of the user, avoiding the reduction of ventilation efficiency and the risk of asphyxia caused by abnormal mask air pressure, and improving the use safety of the mask.

[0010] At the same time, by means of the pressure change generated inside the mask during breathing, the interactive pressure bearing of the massage airbag and the ring body is realized, generating an effect similar to massage, avoiding the facial tissue and muscles from being continuously compressed, resulting in blood circulation obstruction and the occurrence of pressure ulcers, and improving the comfort of the user wearing the mask.

[0011] To achieve the above object, the present invention provides the following technical solutions: A multi-functional mask for non-invasive ventilators, including a mask body, the end face of the open end of the mask body is provided with a ring body, the inner end face of the ring body is attached to the face, and further includes: A pressure ulcer prevention component, arranged on the ring body, used to relieve the pressure of the mask on the facial tissue and prevent the occurrence of pressure ulcers; An asphyxia prevention component, arranged on the outer end face of the ring body and close to the lower jaw of the face, used to provide an emergency airway when the mask ventilation is abnormal and prevent asphyxia.

[0012] Further preferably, the pressure ulcer prevention component includes: A plurality of massage airbags, arranged on the inner end face of the ring body and evenly distributed along its inner end face; An extrusion airbag, arranged on the outer end face of the ring body and located in the inner cavity of the mask body; Each massage airbag is communicated with the extrusion airbag through a piston hole; A piston rod, arranged in the piston hole.

[0013] Further preferably, the asphyxia prevention component includes: An airway body, provided with a movable groove along its horizontal axis, and a first through hole is arranged on the top wall of the airway body, and the first through hole is communicated with the movable groove; An airway valve, arranged in the movable groove and capable of horizontally moving along the movable groove to open or close the first through hole.

[0014] Further preferably, second through-holes and third through-holes penetrating through the thickness are arranged on the outer wall of the airway valve along its vertical direction, air whistle ventilation pipes are respectively arranged in the second through-hole and the third through-hole, and the two air whistle ventilation pipes are in opposite directions.

[0015] Further preferably, a baffle is arranged in the air whistle ventilation pipe, a conical groove is arranged at one end of the baffle, a slit penetrating through the baffle is arranged at the top of the conical groove, a T-shaped block is arranged in the air whistle ventilation pipe, and both ends of the T-shaped block are connected with the inner wall of the air whistle ventilation pipe.

[0016] Further preferably, a chamfer is arranged on one side of the horizontal section of the T-shaped block far away from the vertical section, the chamfer is close to the slit, and their horizontal axes coincide.

[0017] Further preferably, a spring is arranged on the inner end surface of the movable groove, and the free end of the spring is connected with the airway valve.

[0018] Further preferably, a magnetic sheet is symmetrically arranged on both end faces of the airway valve, and a magnetic rod is further arranged on the inner end surface of the movable groove, and the magnetic rod is located inside the spring.

[0019] Further preferably, a through-hole penetrating through the front and rear walls is arranged on the airway valve, a magnetic column is arranged in the through-hole, and two symmetric magnetic disks are arranged on the airway body, and the magnetic disks are in contact with the magnetic column.

[0020] Further preferably, a sliding groove is arranged on the inner wall of the movable groove, and a sliding block matched with the sliding groove is arranged on the outer wall of the airway valve.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a multi-functional mask for non-invasive ventilator. By arranging a pressure sore prevention component, by means of the pressure change generated in the mask during breathing, the interactive pressure bearing change of the massage airbag and the ring body is realized, generating an effect similar to massage, avoiding the situation that the facial tissue muscles are always in a compressed state, resulting in blood circulation obstruction and pressure sores, and greatly improving the wearing comfort and experience of users.

[0022] The present invention is provided with a forehead airbag communicated with the extrusion airbag. By means of the air pressure change generated in the mask by the user's breathing, the air pressure in the forehead airbag changes repeatedly to massage the forehead, relieve the forehead pressure and prevent forehead pressure sores.

[0023] By providing an anti-asphyxiation component, the present invention triggers the opening of an emergency airway based on whether the air pressure inside the mask changes abnormally, allowing the air flow inside the mask to communicate with the outside world, ensuring the normal breathing of the user, avoiding the reduction of ventilation efficiency and the risk of asphyxiation caused by abnormal mask air pressure, and improving the safety of mask use.

[0024] In the present invention, air-sounding ventilation pipes are provided in both through holes of the airway valve. Through the mutual cooperation of the slit and the T-shaped block, when the mask ventilation is abnormal and the emergency airway is opened through the anti-asphyxiation component, an alarm prompt sound is emitted when the gas flows through both through holes, reminding medical staff or the user's family members to check the mask ventilation status and take corresponding measures in a timely manner, further improving the safety of mask use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional view of the overall structure of the present invention; Figure 2 is a rear view of the overall structure of the present invention; Figure 3 is a three-dimensional view of the anti-pressure ulcer component of the present invention; Figure 4 is a front view of the anti-pressure ulcer component of the present invention; Figure 5 is a three-dimensional view of the extrusion airbag of the present invention; Figure 6 is a rear view of the extrusion airbag of the present invention; Figure 7 is a schematic diagram of the piston rod of the present invention; Figure 8 is a three-dimensional view of the ring body of the present invention; Figure 9 is a three-dimensional view of the airway body of the present invention; Figure 10 is a sectional view of the airway body of the present invention; Figure 11 is a three-dimensional view of the airway valve of the present invention; Figure 12 is a sectional view of the anti-asphyxiation component of the present invention; Figure 13 is a sectional view of the air-sounding ventilation pipe of the present invention; Figure 14 is a sectional view of the disk magnet column of the present invention; Figure 15 is a first modeling schematic diagram of the present invention; Figure 16 is a modeling schematic diagram of the anti-asphyxiation component of the present invention; In the figure: 1. Cover body; 2. Ring body; 3. Ventilator interface; 4. Exhaust hole; 5. Fixing belt; 10. Massage airbag; 11. Squeezing airbag; 12. Piston rod; 13. Hose; 14. Forehead airbag; 15. Piston hole; 20. Airway body; 201. First through hole; 202. Slide groove; 203. Disk; 204. Movable groove; 21. Spring; 22. Airway valve; 221. Second through hole; 222. Slide block; 223. Magnetic column; 224. Third through hole; 23. Magnetic rod; 24. Magnetic sheet; 30. Sound-producing ventilation pipe; 301. Baffle; 302. Conical groove; 303. Slit; 304. T-shaped block. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Embodiment 1: As Figure 1 - Figure 2 and Figure 15 - Figure 16 shown, this embodiment provides a non-invasive ventilator multifunctional face mask, including the main cover body 1 of the face mask. The end face at the open end of the cover body 1 is hermetically provided with a ring body 2, and the other side of the ring body 2 is closely attached to the facial tissue. On the outer wall of the cover body 1, a ventilator interface 3 is provided near the mouth for connecting the ventilator to ensure the airtightness between the face mask and the face, and for connecting the ventilator to provide positive pressure ventilation for the user. When in use, an exhaust hole 4 is provided near the bridge of the nose of the cover body 1 for discharging carbon dioxide gas to prevent carbon dioxide retention and avoid harm to the body. The side wall of the ring body 2 is symmetrically provided with fixing belts 5 for firmly fixing the face mask on the user's face to prevent the face mask from shifting or falling off during the breathing process.

[0029] An anti-pressure ulcer component is provided on the annular body 2. The anti-pressure ulcer component is used to relieve the pressure of the face mask on facial tissues and prevent the occurrence of pressure ulcers. The anti-pressure ulcer component adopts an elastic material and a reasonable structural design, which can effectively disperse and relieve the pressure of the face mask on facial tissues and improve the wearing comfort. The connection side of the annular body 2 and the mask body 1 is located inside the mask body 1, and an anti-asphyxia component is provided near the lower jaw of the face. The anti-asphyxia component is used to provide an emergency airway in case of abnormal ventilation of the face mask to prevent asphyxia. When the face mask is ventilated normally, the anti-asphyxia component is in a closed state. Once the ventilation of the face mask is abnormal, it will immediately open to provide an emergency airway for the user and effectively prevent the occurrence of asphyxia accidents.

[0030] Example 2: As Figure 3 - Figure 8 and Figure 15 shown, on the basis of Example 1, this example provides a multi-functional face mask for a non-invasive ventilator. The anti-pressure ulcer component includes: a plurality of massage air bags 10, which are arranged on the inner end surface of the annular body 2 and are equally spaced along its inner end surface; an extrusion air bag 11, which is arranged on the outer end surface of the annular body 2 and is located in the inner cavity of the mask body 1; each of the massage air bags 10 is communicated with the extrusion air bag 11 through a piston hole 15; a piston rod 12 is arranged in the piston hole 15 and can slide in the piston hole 15.

[0031] The anti-pressure ulcer component includes massage air bags 10. A plurality of massage air bags 10 are arranged on the inner end surface of the annular body 2, that is, on the side close to the face and equally spaced along the circumference of the annular body 2. The massage air bags 10 are in close contact with the facial tissues to ensure the sealing of the face mask. The massage air bags 10 are made of a flexible and elastic material and can fit the facial contour. An extrusion air bag 11 is arranged on the outer end surface of the annular body 2, that is, on the connection side with the mask body 1 and is located inside the mask body 1 and along the circumference of the annular body 2. The piston rod 12 is hermetically connected to the piston hole 15 to ensure that the piston rod 12 can slide up and down in the piston hole 15 to change the air pressure in the massage air bags 10 and the extrusion air bag 11.

[0032] Preferably, the end surface size of the piston rod 12 near the extrusion air bag 11 is larger than the end surface size of the piston rod 12 near the massage air bag 10. When exhaling, the extrusion air bag 11 is compressed. At this time, the force on the end of the piston rod 12 near the extrusion air bag 11 is greater than that near the massage air bag 10, making it easier for the massage air bag 10 to be squeezed and inflated. In addition, four massage air bags 10 are evenly spaced along the circumference of the annular body 2 on the side close to the face, which can better achieve the massage effect and prevent pressure ulcers.

[0033] During use, when the user exhales, the air pressure inside the mask increases, squeezing the squeeze airbag 11. The internal air pressure rises, pushing the piston rod 12 to slide towards the massage airbag 10, causing the massage airbag 10 to inflate and expand. At this time, the pressure of the mask on the face is mainly borne by the massage airbag 10, and the ring body 2 still maintains a sealed fit with the face, but the pressure it receives decreases. When the user inhales, the squeeze airbag 11 relaxes, the internal air pressure decreases, and the piston rod 12 resets to its initial position. The massage airbag 10 relaxes and automatically resets. At this time, the pressure of the mask on the face is mainly borne by the ring body 2, and the massage airbag 10 still maintains a sealed fit with the face, but the pressure it receives decreases. In this way, a massage cycle is completed. Through the user's periodic exhalation and inhalation, the interactive pressure bearing change between the massage airbag 10 and the ring body 2 is realized, massaging the face, effectively relieving the oppression of the mask on the face, and preventing the occurrence of pressure sores.

[0034] Example 3: As Figure 3 - Figure 8 and Figure 15 shown, on the basis of Example 2, this embodiment provides a non-invasive ventilator multifunctional mask. In order to further improve the comfort and pressure sore prevention effect of the mask, a hose 13 is provided at the position where the ring body 2 is close to the bridge of the nose of the face. The other end of the hose 13 is connected to a forehead airbag 14, and the forehead airbag 14 fits with the user's forehead; the squeeze airbag 11 is connected to the forehead airbag 14 through the hose 13 to form a complete air pressure circulation system. Specifically, the connection end of the squeeze airbag 11 and the hose 13 is provided with an opening, and the squeeze airbag 11 and both ends of the hose 13 are hermetically connected through an elastic elbow.

[0035] When the user exhales, the squeeze airbag 11 is compressed, the internal air pressure rises, and the air flow is pushed to move towards the forehead airbag 14 through the hose 13. At this time, the air pressure in the forehead airbag 14 rises and the bearing pressure increases. When the user inhales, the forehead airbag 14 relaxes, and the air flow flows back to the squeeze airbag 11 through the hose 13 and resets to the initial state. At this time, the air pressure in the forehead airbag 14 decreases and the bearing pressure decreases. The forehead is massaged through the repeated change of the air pressure in the forehead airbag 14, relieving the forehead pressure and preventing forehead pressure sores.

[0036] The ring body 2 is made of a hydrogel material. The hydrogel material has high hydrophilicity and high water content, and can form a soft interface when contacting the skin, effectively dispersing pressure. Its water content can reach 70%-90%, which can simulate a moist environment and reduce skin dryness and damage. At the same time, the hydrogel also has good plasticity and can adaptively deform according to the facial contour, further improving the pressure dispersion effect.

[0037] The massage airbag 10 is made of silicone material. The silicone material has high softness, good elasticity and biocompatibility. Its soft texture can effectively reduce the friction and hard compression on the facial skin and evenly disperse the pressure. For example, the Shore hardness of some silicone materials can be as low as 30-40A, which can significantly reduce the local pressure while ensuring the stability of the mask structure. Moreover, the silicone material has good air permeability, can reduce the stuffy and humid feeling of the skin, and reduce the probability of pressure sores.

[0038] Embodiment 4: As Figure 9 - Figure 16 shown, on the basis of Embodiment 1, this embodiment provides a non-invasive ventilator multifunctional mask. The anti-asphyxia component includes: an airway body 20, which is provided with a movable groove 204 along its horizontal axis. A first through hole 201 is opened on the side wall of the airway body 20. An opening matching the first through hole 201 is opened on the mask body 1. The gas inside and outside the mask body 1 is circulated through the first through hole 201. The first through hole 201 is communicated with the movable groove 204; an airway valve 22, which is arranged in the movable groove 204 and can move horizontally along the movable groove 204 to open or close the first through hole 201.

[0039] Specifically, the airway body 20 is fixedly installed on the side of the ring body 2 connected to the mask body 1, and its installation position is close to the facial jaw area and is located inside the mask body 1. The airway body 20 is a hollow cylindrical structure with one end open. The cross-section of the airway valve 22 matches the cross-section of the cavity of the airway body 20, which is convenient for the airway valve 22 to slide in the cavity of the airway body 20 and maintain a sealed connection.

[0040] On the outer wall of the airway valve 22, a second through hole 221 and a third through hole 224 penetrating its thickness are arranged along its vertical direction. The second through hole 221, the third through hole 224 and the first through hole 201 are arranged side by side along the sliding direction of the airway valve 22, and the apertures of the second through hole 221 and the third through hole 224 are both consistent with the aperture of the first through hole 201. The second through hole 221 and the third through hole 224 are respectively opened on both sides of the first through hole 201. When the airway valve 22 slides back and forth in the movable groove 204, the second through hole 221 and the third through hole 224 can respectively cooperate with the first through hole 201 to form an air flow channel to realize the gas circulation inside and outside the mask body 1. Air whistle ventilation pipes 30 are respectively arranged in the second through hole 221 and the third through hole 224, and the two air whistle ventilation pipes 30 are in opposite directions, and are used to emit an alarm prompt sound when gas flows through the air whistle ventilation pipes 30.

[0041] A baffle 301 is arranged inside the pneumatic sound pipe 30. One end of the baffle 301 is provided with a conical groove 302, and the top of the conical groove 302 is provided with a slit 303 penetrating through the baffle 301 for guiding and regulating the air flow. A T-shaped block 304 is arranged inside the pneumatic sound pipe 30, and both ends of the T-shaped block 304 are connected to the inner wall of the pneumatic sound pipe 30.

[0042] A chamfer is arranged on one side of the horizontal section of the T-shaped block 304 away from the vertical section, and the chamfer is close to the slit 303, and their horizontal axes coincide.

[0043] The T-shaped block 304 in the pneumatic sound pipe 30 in the second through hole 221 is located below the baffle 301, and the conical groove 302 is opened on the upper end surface of the baffle 301; the T-shaped block 304 in the pneumatic sound pipe 30 in the third through hole 224 is located above the baffle 301, and the conical groove 302 is opened on the lower end surface of the baffle 301.

[0044] In the normal state, the emergency airway is not opened, and the slit 303 and the T-shaped block 304 will not interfere with the gas flow. Once the emergency airway is opened, when the gas flows through the slit 303 and the T-shaped block 304, a sound is generated and a prompt alarm sound is emitted to remind medical staff or the user's family members to pay attention to the ventilation state of the face mask and take corresponding measures in time.

[0045] Specifically, the second through hole 221 cooperates with the first through hole 201 to exhale the air flow from the inside of the cover body 1 to the outside, so the installation directions of the slit 303 and the T-shaped block 304 are outward. The third through hole 224 cooperates with the first through hole 201 to inhale the air flow from the outside to the inside of the cover body 1, so the installation directions of the slit 303 and the T-shaped block 304 inside it are inward.

[0046] Embodiment 5: As Figure 9 - Figure 16 shown, on the basis of Embodiment 4, this embodiment provides a non-invasive ventilator multifunctional face mask. To ensure that the airway valve 22 slides stably and smoothly in the airway body 20, a spring 21 is arranged on the inner end surface of the moving groove 204, and the free end of the spring 21 is connected to the airway valve 22.

[0047] Sliding grooves 202 are arranged on the inner wall of the moving groove 204, and sliding blocks 222 are arranged on the outer wall of the airway valve 22 and are matched with the sliding grooves 202. Limit parts are arranged at both ends of the sliding grooves 202 to prevent the sliding blocks 222 from sliding out of the sliding grooves 202.

[0048] During use, when the spring 21 is in the restored state, the second through-hole 221 and the third through-hole 224 are respectively located on both sides of the first through-hole 201. The airway valve 22 seals the first through-hole 201. At this time, the emergency airway is closed, the air pressure in the cover body 1 is normal, and the user breathes normally through the face mask. When the air pressure in the cover body 1 is abnormally higher than the upper threshold value, the airflow in the cover body 1 flows into through the open end of the movable groove 204 and pushes the airway valve 22 to slide towards the inner end of the movable groove 204. At this time, the spring 21 is compressed, the second through-hole 221 slides to the position of the first through-hole 201, and the passage of the second through-hole 221 coincides with the passage of the first through-hole 201 to open the emergency airway, and the airflow in the cover body 1 is pushed out to the outside, and the user breathes through the emergency airway.

[0049] When the air pressure in the cover body 1 is abnormally lower than the lower threshold value, the air pressure in the cover body 1 decreases, pulling the airway valve 22 to slide towards the open end of the movable groove 204. At this time, the spring 21 is stretched, the third through-hole 224 slides to the position of the first through-hole 201, and the passage of the third through-hole 224 coincides with the passage of the first through-hole 201 to open the emergency airway, and the outside airflow is sent into the cover body 1, and the user breathes through the emergency airway.

[0050] A magnetic sheet 24 is symmetrically arranged on each of the two end faces of the airway valve 22, and a magnetic rod 23 is further arranged on the inner end face of the movable groove 204, and the magnetic rod 23 is located inside the spring 21. The magnetic rod 23 and the magnetic sheet 24 cooperate with each other by generating suction force, enhancing the stability of the airway valve 22 in the normal state.

[0051] In order to further enhance the stability of the airway valve 22 in the airway body 20, a through-hole penetrating the front and rear walls of the airway valve 22 is provided, a magnetic column 223 is arranged in the through-hole, and two symmetric magnetic disks 203 are arranged on the airway body 20. The magnetic disks 203 are in contact with the magnetic column 223, restricting the radial movement of the airway valve 22 and ensuring the smoothness and accuracy of the airway valve 22 during sliding. Considering the influence of fluctuations during normal breathing and preventing the accidental triggering of the opening of the emergency airway during normal breathing, the magnetic disks 203 and the magnetic column 223 are provided to avoid the accidental triggering of the emergency airway and can reset it when needed.

[0052] When the air pressure in the cover body 1 rises above the upper threshold value, at this time, the pressure received by the airway valve 22 is sufficient to overcome the suction force between the magnetic disk 203 and the magnetic column 223 and the elastic force of the spring 21, pushing the airway valve 22 towards the side close to the spring 21. The second through-hole 221 slides to the position of the first through-hole 201 and maintains a certain stability, opening the emergency airway to timely release the gas in the face mask. When the air pressure in the cover body 1 decreases, that is, when the face mask ventilation is normal, the airway valve 22 returns to the middle initial position under the influence of the elastic force of the spring 21 and the suction force between the magnetic disk 203 and the magnetic column 223, thereby closing the emergency airway and breathing normally through the face mask.

[0053] When the air pressure inside the cover 1 drops by more than the lower threshold value, for example, in case of air leakage, or blockage of the air intake passage, etc., the air pressure decreases sharply and cannot be replenished. At this time, the negative pressure suction force on the airway valve 22 is sufficient to overcome the elastic force of the spring 21 and the suction force between the magnetic disk 203 and the magnetic column 223, pushing the airway valve 22 to the side away from the spring 21. The third through-hole 224 slides to the position of the first through-hole 201 and maintains a certain stability, opening the emergency airway to timely supplement the gas inside the mask.

[0054] The working principle and operation process of the present invention are as follows: First, connect the ventilator well through the ventilator interface 3, fix the mask on the user's face through the fixing belt 5, and keep the ring body 2 in close contact with the facial tissue. Finally, start the ventilator and adjust the working pressure, time and other information of the ventilator.

[0055] Secondly, during the normal use of the user, by means of the air pressure change generated in the cover 1 by the user's breathing cycle, the compression or release state of the extrusion airbag 11 is changed, so as to realize that the massage airbag 10 and the ring body 2 interact to bear the pressure of the mask on the face, and the air pressure in the forehead airbag 14 changes in compression and release, massaging the facial tissue to avoid the facial tissue being in a compressed state all the time and causing pressure sores.

[0056] Thirdly, the anti-asphyxia component will open the emergency airway according to whether the air pressure change inside the cover 1 is abnormal to prevent asphyxia. When the air pressure inside the cover 1 is higher than the upper threshold value, or the negative pressure is lower than the lower threshold value, the emergency airway will be triggered to open, connecting the inside of the cover 1 with the outside world to ensure the normal breathing of the user. And when the air flow passes through the emergency airway, an alarm prompt sound will be emitted to remind the medical staff to check the ventilation state of the cover 1 and take corresponding measures in time.

[0057] The ring body 2 made of hydrogel material and the massage airbag 10 made of silicone material are in sealed contact with the patient's face to ensure the tightness of the mask. When exhaling, the pressure inside the mask increases, the gas increases, the extrusion airbag 11 is extruded, and the gas inside it pushes the piston rod 12 downward to extrude the massage airbag 10, so that the pressure received by the massage airbag 10 is amplified. As it expands, the contact part with it is lifted, and the four groups of distributed massage airbags 10 bear the pressure of contacting the face. The rest of the ring body 2 remains sealed, but the pressure received is reduced to the minimum; when inhaling, the massage airbag 10 is no longer affected by the piston rod 12, returns to its normal size, and resets the piston rod 12 and the extrusion airbag 11. By means of the pressure change inside the mask generated by breathing, the interactive pressure bearing change of the massage airbag 10 and the ring body 2 is realized, producing an effect similar to massage, avoiding the local facial muscles being compressed all the time, resulting in blocked blood circulation and pressure sores.

[0058] The anti-suffocation component will make corresponding changes when the air pressure in the mask exceeds the upper and lower limits. When the air pressure in the mask exceeds a certain limit, or the negative pressure reaches a certain level, it will trigger the opening of the emergency channel, connecting the mask with the outside world, and when the airflow passes through this channel, the structure inside the air whistle ventilation tube 30 will generate a prompt alarm sound. Considering the influence of normal breathing fluctuations, to prevent false triggering, magnetic and spring structures are set to avoid false triggering, and it can be reset.

[0059] When the pressure in the mask is high, the pressure thrust of the airway valve 22 overcomes the suction between the disk 203 and the magnetic column 223 and the elastic force of the spring 21, pushes the airway valve 22 to the far right, switches to the left exhaust channel, and maintains a certain stability. When the pressure decreases, it returns to the middle original position under the elastic force of the spring 21 and the suction of the magnetic column 223 of the disk 203. When the pressure in the mask is low, the gas decreases sharply and cannot be replenished, the elastic force of the spring 21 overcomes the suction of the magnetic column 223 of the disk 203 and the gas force on the airway valve 22, switches to the right air intake channel, replenishes the gas in the mask in time, and emits an alarm sound.

[0060] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A non-invasive ventilator multifunctional mask, comprising a mask body (1), wherein an annular body (2) is arranged on the end face of the open end of the mask body (1), and the inner end face of the annular body (2) is attached to the face, and is characterized in that, Further comprising: A pressure ulcer prevention component, disposed on the ring body (2), for relieving the compression of the face mask on facial tissues and preventing pressure ulcers from occurring; An asphyxia prevention component, disposed on the outer end face of the ring body (2) and close to the lower jaw of the face, for providing an emergency airway when the ventilation of the face mask is abnormal and preventing asphyxia.

2. The multifunctional mask of a non-invasive ventilator according to claim 1, wherein The pressure ulcer prevention component includes: A plurality of massage air bags (10), disposed on the inner end face of the ring body (2) and equally spaced along its inner end face; An extrusion air bag (11), disposed on the outer end face of the ring body (2) and located in the inner cavity of the mask body (1); Each of the massage air bags (10) is communicated with the extrusion air bag (11) through a piston hole (15); A piston rod (12), disposed in the piston hole (15).

3. The non-invasive ventilator multifunctional face mask according to claim 1, wherein, The asphyxia prevention component includes: An airway body (20), provided with a movable groove (204) along its horizontal axis, and a first through hole (201) is provided on the top wall of the airway body (20), and the first through hole (201) is communicated with the movable groove (204); An airway valve (22), disposed in the movable groove (204) and capable of horizontally moving along the movable groove (204) to open or close the first through hole (201).

4. The non-invasive ventilator multi-functional face mask according to claim 3, wherein, On the outer wall of the airway valve (22), a second through hole (221) and a third through hole (224) penetrating through its thickness are provided along its vertical direction, and air whistle ventilation pipes (30) are respectively disposed in the second through hole (221) and the third through hole (224), and the two air whistle ventilation pipes (30) are in opposite directions.

5. The non-invasive ventilator multifunctional face mask according to claim 4, wherein A baffle (301) is disposed in the air whistle ventilation pipe (30), one end of the baffle (301) is provided with a tapered groove (302), a slit (303) penetrating through the baffle (301) is provided at the top of the tapered groove (302), and a T-shaped block (304) is disposed in the air whistle ventilation pipe (30), and both ends of the T-shaped block (304) are connected to the inner wall of the air whistle ventilation pipe (30).

6. The non-invasive ventilator multifunctional face mask according to claim 5, wherein, A chamfer is provided on the horizontal section of the T-shaped block (304) on the side far from the vertical section, and the chamfer is close to the slit (303), and their horizontal axes coincide.

7. The non-invasive ventilator multifunctional face mask according to claim 3, characterized in that, A spring (21) is provided on the inner end face of the movable groove (204), and the free end of the spring (21) is connected to the airway valve (22).

8. The non-invasive ventilator multifunctional face mask according to claim 7, wherein, Two magnetic sheets (24) are symmetrically disposed on the two end faces of the airway valve (22), and a magnetic rod (23) is further disposed on the inner end face of the movable groove (204), and the magnetic rod (23) is located inside the spring (21).

9. The non-invasive ventilator multifunctional face mask according to claim 8, characterized in that, A through hole penetrating through its front and rear walls is provided on the airway valve (22), a magnetic column (223) is disposed in the through hole, and two symmetric magnetic disks (203) are provided on the airway body (20), and the magnetic disks (203) are in contact with the magnetic column (223).

10. The non-invasive ventilator multifunctional face mask according to claim 9, wherein, A sliding groove (202) is provided on the inner wall of the movable groove (204), and a sliding block (222) matching with the sliding groove (202) is provided on the outer wall of the airway valve (22).

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