Breathing machine mask for intensive care unit (ICU)

By designing a quick disassembly and automatic clamping structure in the ventilator mask, the problem of manual operation when replacing the filter of the existing mask is solved, and the convenience and cleanliness of the replacement process are achieved.

CN120114715AInactive Publication Date: 2025-06-10HENGYANG CENT HOSPITAL
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Patent Information

Application Number
CN202510332189.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2025-06-10
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When replacing the filter of the existing ventilator mask, it is necessary to remove the limit plate and manually remove the filter, resulting in contamination of the storage location and affecting the cleanliness.

Method used

A ventilator mask including a quick disassembly structure of the filter block and an automatic clamping structure are designed. The limit cover is separated from the mounting cylinder by the movement of the pressing member, and the automatic clamping rod removes the filter block to avoid manual operation.

Benefits of technology

The convenience and cleanliness of filter block replacement are achieved, which avoids possible pollution during manual removal and improves the safety of the mask.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a respirator mask for ICU (intensive care unit), which relates to the field of respirator masks and comprises a mask body and a lower limiting belt fixedly mounted on the outer side of the mask body. A sealing ring belt is installed at the lower end of the mask body in a nested mode, an installation cylinder is fixedly installed at the upper end of the mask body, an air inlet connector is fixedly installed at the upper end of the mask body, and an upper limiting belt is fixedly installed on the outer side of the mask body. According to the breathing machine mask for ICU intensive care, a positioning block can be separated from a positioning groove, so that a limiting cover is taken down from the upper end of a mounting cylinder, a filter block in the mounting cylinder can be replaced, and the convenience of replacing the filter block in the mask is improved; according to the mask, the rotating tooth cylinder and the movable tooth plate can move, so that the clamping rod is driven to move and automatically clamp the filter block, the filter block is detached in the process of detaching the limiting cover, and the convenience and cleanliness of replacing the filter block of the mask are improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of ventilator masks, and specifically to a ventilator mask for ICU intensive care. Background Art

[0002] A ventilator mask is a medical device that covers a patient's face and delivers oxygen from a ventilator to the patient. During use, an elastic band is required to wear the mask on the patient's face, and then oxygen can be supplied to the inside of the mask through the ventilator, thereby improving the treatment effect of medical staff on the patient. However, there are still certain defects in the use of existing ventilator masks. After long-term use of the ventilator mask, the filter needs to be replaced. To replace the filter, the filter needs to be removed. Since critically ill patients generally need to wear the mask continuously, either directly pick up the mask to replace it or directly replace it during use. In either case, the patient will be exposed to external air for a certain period of time. Under normal circumstances, there will be no problem, but for critically ill patients, there may be risks such as hypoxia or infection; The patent with the patent authorization announcement number CN213964745U discloses a ventilator mask for ICU intensive care. By setting a closing mechanism, the closing mechanism can be retracted when the filter element is in a normal state, without affecting the air circulation and maintaining normal use. When replacing the filter element, a single single sealing plate will continuously stack and unfold, thereby closing the entire channel to prevent unfiltered air from entering the interior, and the filter can be replaced during the normal use of the breathing mask, which is simple and convenient; The patent with the patent authorization announcement number CN220572498U discloses a ventilator mask for ICU intensive care. By setting an adjustment structure to distinguish between the nasal breath and oral breathing of the patient, the internal structure of the sealing ring is used for differentiated use. Compared with the prior art, the breathing mode of the patient is distinguished, so that the patient with nasal breath can achieve the effect of supplying oxygen only to the nose part after the sealing ring is closed, avoiding the occurrence of facial infection and ulceration; by setting a pressing and rotating structure, it is achieved that while replacing the filter for the patient, the filter holes are prevented from contacting the external air, so that external bacteria penetrate into the mask interior and affect the patient's condition. Compared with the prior art, a more hygienic medical environment is provided for the patient, avoiding the influence of external bacteria on the patient and enabling the patient to avoid the risk of infection to a greater extent; In the above-mentioned disclosed patents, the ventilator mask in the patent solves the above-mentioned problems, but the ventilator mask still has the following problems. During the process of replacing the filter inside the ventilator mask, the limiting plate on the outside of the filter element needs to be removed, and then the filter element is taken out. During the removal of the filter element, it needs to be taken out manually by hand or with the help of other tools, and the filter element cannot be automatically taken out. This method is likely to cause pollution in the storage position of the filter element, affecting the cleanliness of the filter element taken out.

[0003] In view of the above problems, it is urgent to innovate and design on the basis of the original mask structure. Summary of the Invention

[0004] The purpose of the present invention is to provide a ventilator mask for ICU intensive care, so as to solve the problem that in the process of replacing the internal filter of the ventilator mask, the limit plate outside the filter body needs to be removed, and then the filter body is taken out. When the filter body is disassembled, it needs to be taken out by hand or with the help of other tools, and the filter body cannot be automatically taken out. This method is likely to cause pollution in the storage position of the filter body, affecting the cleanliness of the filter body removal.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A ventilator mask for ICU intensive care, including a mask main body and a lower limit belt fixedly installed outside the mask main body; A sealing ring belt is nested and installed at the lower end of the mask main body, and an installation cylinder is fixedly installed at the upper end of the mask main body. A filter block is arranged inside the installation cylinder. An air inlet interface is fixedly installed at the upper end of the mask main body, and an upper limit belt is fixedly installed outside the mask main body; A filter block quick disassembly structure, a filter block automatic clamping structure, and a gastric tube automatic limiting structure are arranged outside the mask main body.

[0006] Preferably, the disassembly structure includes an exhaust hole and a limit cover, and the limit cover is snap-fitted at the upper end of the installation cylinder, and exhaust holes are opened inside the limit cover and the installation cylinder.

[0007] Preferably, a movement groove is opened inside the limit cover, and a pressing member is slidably installed inside the movement groove, and two groups of the pressing member and the movement groove are arranged inside the limit cover; A positioning block is fixedly installed outside the pressing member, a positioning groove is opened inside the installation cylinder, and the positioning block is snap-fitted with the positioning groove.

[0008] Preferably, a return spring is arranged inside the movement groove, and both ends of the return spring are fixedly connected to the pressing member and the limit cover respectively. A sponge block is nested and installed inside the limit cover. The sponge block is located inside the movement groove and is in close contact with the pressing member.

[0009] Preferably, the clamping structure includes a sliding toothed plate, and the sliding toothed plate is fixedly installed at the lower end of the pressing member and is located inside the movement groove. A rotating toothed cylinder is rotatably installed inside the movement groove, and the rotating toothed cylinder is meshed with the sliding toothed plate.

[0010] Preferably, the clamping structure further includes a movable toothed plate, which is slidably installed inside the limit cover. A clamping rod is fixedly installed at the lower end of the movable toothed plate. Meanwhile, the movable toothed plate is meshed with the rotating toothed cylinder.

[0011] Preferably, the lower end of the clamping rod is located inside the filter block, and two groups of the clamping rod and the movable toothed plate are symmetrically arranged about the vertical central axis of the rotating toothed cylinder.

[0012] Preferably, the limiting structure includes a fixed block, which is fixedly installed on the outer side of the upper end of the mask body. A docking block is fixedly installed on the outer side of the fixed block. Meanwhile, the docking block is located on the side of the fixed block away from the installation cylinder.

[0013] Preferably, a movable block is slidably installed on the outer side of the docking block. A docking groove is formed inside the movable block, and the docking groove is located on the outer side of the movable block. Meanwhile, curved grooves are formed at the ends of the movable block and the fixed block close to each other.

[0014] Preferably, a sliding rod is slidably installed inside the docking groove. A upper magnetic sheet is fixedly installed at the lower end of the sliding rod, and the sliding rod penetrates through the docking block. A lower magnetic sheet is fixedly installed at the lower end of the docking groove, and the lower magnetic sheet is tightly attracted to the upper magnetic sheet. The upper magnetic sheet and the lower magnetic sheet are of opposite magnetic poles.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the movement of the two groups of pressing members, the positioning block can be separated from the positioning groove, so that the limit cover can be removed from the upper end of the installation cylinder, and the filter block inside the installation cylinder can be replaced, thereby improving the convenience of replacing the filter block inside the mask. 2. Through the movement of the two groups of sliding toothed plates following the pressing members, the rotating toothed cylinder and the movable toothed plate can be moved, thereby driving the clamping rod to move and automatically clamping the filter block. During the disassembly of the limit cover, the disassembly of the filter block is realized, improving the convenience and cleanliness of replacing the filter block of the mask. 3. Further, by automatically taking out the filter block by the clamping rod, it is possible to avoid manual taking or using other tools during the process of taking out the filter block, ensuring the convenience and cleanliness of the installation and disassembly of the filter block. 4. Further, through the setting of the fixed block and the movable block, the gastric tube can be limited, and through the setting of the curved groove, the friction between the curved groove and the gastric tube can be increased, ensuring the stability of the limit of the fixed block and the movable block on the gastric tube. 5. Furthermore, through the setting of the upper magnetic sheet and the lower magnetic sheet, the rapid docking and separation between the docking block and the movable block can be realized, thereby ensuring the convenience of the installation and disassembly of the gastric tube by the mask. Description of the Drawings

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the lower limit belt of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the air inlet interface of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the installation cylinder of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the positioning block of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the pressing member of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the moving toothed plate of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the limit cover of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the fixed block of the present invention; Figure 10 Schematic diagram of the three-dimensional structure of the docking block of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the moving block of the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the sliding rod of the present invention.

[0017] In the figure: 1, mask main body; 2, lower limit belt; 3, upper limit belt; 4, sealing ring belt; 5, installation cylinder; 6, filter block; 7, air inlet interface; 8, exhaust hole; 9, limit cover; 10, pressing member; 11, movement groove; 12, return spring; 13, positioning block; 14, sponge block; 15, sliding toothed plate; 16, rotating toothed cylinder; 17, moving toothed plate; 18, clamping rod; 19, fixed block; 20, moving block; 21, curve groove; 22, docking groove; 23, sliding rod; 24, docking block; 25, positioning groove; 26, upper magnetic sheet; 27, lower magnetic sheet. Detailed implementation manners

[0018] 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.

[0019] Embodiment 1: As shown in this Figures 1-7 embodiment, in order to solve the problem that the internal filter block 6 of the existing ventilator mask is difficult to quickly take out, the process of quickly taking out the internal filter block 6 of the ventilator mask is disclosed, achieving the effect that the ventilator mask is convenient to use. The specific content is as follows: The mask main body 1 and the lower limit belt 2 fixedly installed on the outer side of the mask main body 1; a sealing ring belt 4 is nested and installed at the lower end of the mask main body 1, and an installation cylinder 5 is fixedly installed at the upper end of the mask main body 1. A filter block 6 is arranged inside the installation cylinder 5. An air inlet interface 7 is fixedly installed at the upper end of the mask main body 1, and an upper limit belt 3 is fixedly installed on the outer side of the mask main body 1; a quick-disassembly structure for the filter block 6 is arranged on the outer side of the mask main body 1; the disassembly structure includes an exhaust hole 8 and a limit cover 9, and the limit cover 9 is snap-fitted on the upper end of the installation cylinder 5, and exhaust holes 8 are opened inside the limit cover 9 and the installation cylinder 5; a movement groove 11 is opened inside the limit cover 9, and a pressing member 10 is slidably installed inside the movement groove 11, and two groups of the pressing member 10 and the movement groove 11 are arranged inside the limit cover 9; a positioning block 13 is fixedly installed on the outer side of the pressing member 10, a positioning groove 25 is opened inside the installation cylinder 5, and the positioning block 13 is snap-connected with the positioning groove 25; a return spring 12 is arranged inside the movement groove 11, and both ends of the return spring 12 are fixedly connected with the pressing member 10 and the limit cover 9 respectively, and a sponge block 14 is nested and installed inside the limit cover 9. The sponge block 14 is located inside the movement groove 11, and the sponge block 14 is in close fit with the pressing member 10.

[0020] When using this ICU intensive care ventilator mask, first install this ventilator mask outside the patient's mouth and nose. In this process, it is necessary to install this ventilator mask on the outer side of the patient's face through the lower limit belt 2 and the upper limit belt 3. Then, the air inlet interface 7 can be docked with the ventilator interface. During the docking process, the angle of the ventilator intake pipe can be adjusted by rotating the air inlet interface 7. After this ventilator mask is installed, oxygen can be supplied to the patient through the mask main body 1. During the oxygen supply process, the gas exchange inside and outside the mask main body 1 is completed through the filter block 6 inside the installation cylinder 5, and the gas entering the mask main body 1 from the outside can be filtered through the filter block 6 to ensure the cleanliness of the gas. And after this ventilator mask is used for a period of time, the filter block 6 will be contaminated. At this time, the filter block 6 needs to be replaced. During the replacement process of the filter block 6; Medical staff are required to press two sets of pressing members 10 and make the two sets of pressing members 10 move closer to each other. During the movement of the pressing members 10, the positioning blocks 13 will be driven to move synchronously. During the movement of the positioning blocks 13, they will move away from the positioning grooves 25. During this process, the pressing members 10 will squeeze the sponge blocks 14 and cause the sponge blocks 14 to contract. At the same time, the return springs 12 will be stretched by the pressing members 10 and the limit covers 9, causing the return springs 12 to expand. And after the positioning grooves 25 are separated from the positioning blocks 13, the limit covers 9 can be separated from the mounting cylinders 5. At this time, the filter blocks 6 inside the mounting cylinders 5 can be taken out and the filter blocks 6 can be replaced, so as to ensure the convenience of using the mask and reduce the probability of infection for patients using the mask.

[0021] Embodiment 2: As shown in this embodiment Figures 1-8 shown, in order to solve the problem that the existing mask needs to manually take the filter block 6, the process of automatically taking the filter block 6 is disclosed, achieving the effect of greatly reducing the infection probability of the ventilator mask. The specific content is as follows: An automatic clamping structure for the filter block 6 is provided on the outer side of the mask body 1. The clamping structure includes a sliding toothed plate 15, and the sliding toothed plate 15 is fixedly installed at the lower end of the pressing member 10, and the sliding toothed plate 15 is located inside the movement groove 11. A rotating toothed cylinder 16 is rotatably installed inside the movement groove 11, and the rotating toothed cylinder 16 is meshed with the sliding toothed plate 15; the clamping structure further includes a moving toothed plate 17, and the moving toothed plate 17 is slidably installed inside the limit cover 9, and a clamping rod 18 is fixedly installed at the lower end of the moving toothed plate 17. At the same time, the moving toothed plate 17 is meshed with the rotating toothed cylinder 16; the lower end of the clamping rod 18 is located inside the filter block 6, and two sets of the clamping rods 18 and the moving toothed plate 17 are symmetrically arranged about the vertical central axis of the rotating toothed cylinder 16.

[0022] When using the ventilator mask for ICU intensive care, it is necessary to take out the filter block 6 from the inside of the mounting cylinder 5 and replace it. During the replacement of the filter block 6, it is necessary to remove the limit cover 9 from the upper end of the mounting cylinder 5. During the process of the pressing members 10 moving closer to each other, the pressing members 10 will drive the sliding toothed plate 15 to slide synchronously inside the movement groove 11. During the movement of the sliding toothed plate 15, the rotating toothed cylinder 16 meshed with it will be driven to rotate. The rotation of the rotating toothed cylinder 16 will drive the moving toothed plate 17 meshed with it to move. The movement of the moving toothed plate 17 will drive the clamping rod 18 to move synchronously. At this time, the clamping rods 18 will move closer to each other and clamp the filter block 6, and when the limit cover 9 is separated from the mounting cylinder 5, the filter block 6 will be taken out from the inside of the mounting cylinder 5, thus avoiding manually or with the help of other tools to take out the filter block 6 and ensuring the cleanliness and convenience of the process of taking out the filter block 6.

[0023] Embodiment 3: As shown in this embodimentFigures 1-3 and Figures 8-12 As shown in Figures 8-12 , to solve the problem that existing face masks are difficult to be suitable for nasogastric tubes, the process of using a face mask in combination with a nasogastric tube is disclosed, achieving the effect that the face mask can feed patients. The specific content is as follows: An automatic nasogastric tube limiting structure is arranged on the outer side of the face mask body 1. The limiting structure includes a fixing block 19, and the fixing block 19 is fixedly installed on the outer side of the upper end of the face mask body 1. A docking block 24 is fixedly installed on the outer side of the fixing block 19, and the docking block 24 is located on the side of the fixing block 19 away from the installation cylinder 5. A moving block 20 is slidably installed on the outer side of the docking block 24. A docking groove 22 is formed inside the moving block 20, and the docking groove 22 is located on the outer side of the moving block 20. Curve grooves 21 are formed at the ends of the moving block 20 and the fixing block 19 close to each other. A sliding rod 23 is slidably installed inside the docking groove 22. An upper magnetic sheet 26 is fixedly installed at the lower end of the sliding rod 23, and the sliding rod 23 penetrates through the docking block 24. A lower magnetic sheet 27 is fixedly installed at the lower end of the docking groove 22, and the lower magnetic sheet 27 is tightly attracted to the upper magnetic sheet 26, and the upper magnetic sheet 26 and the lower magnetic sheet 27 are of opposite magnetic poles.

[0024] When using this ventilator face mask, it is necessary to judge whether the patient needs to be fed according to the patient's condition. When wearing this face mask for a patient who needs to eat, the nasogastric tube needs to be installed at the same time. During this process, the nasogastric tube needs to be installed in the curve groove 21 formed between the fixing block 19 and the moving block 20. During this process, it is necessary to pull the sliding rod 23 to slide upward inside the docking groove 22. At the same time, when the sliding rod 23 moves upward, it will drive the upper magnetic sheet 26 to move upward and separate the upper magnetic sheet 26 from the lower magnetic sheet 27. And when the sliding rod 23 moves upward, it will move away from the docking block 24. After the docking block 24 is separated from the sliding rod 23, the moving block 20 can be separated from the fixing block 19. At this time, the docking block 24 will slide inside the docking groove 22, and at this time, the fixing block 19 and the moving block 20 will move away from each other, and at the same time, the curve groove 21 will be in an open state. Then the nasogastric tube can be placed inside the curve groove 21 and one end of the nasogastric tube can be placed inside the patient's nasal cavity. At this time, the above process needs to be operated in the reverse direction to make the fixing block 19 and the moving block 20 contact each other, so as to limit the nasogastric tube inside the curve groove 21, completing the automatic limiting process of the face mask for the nasogastric tube, so that the patient can be fed while wearing this ventilator face mask, improving the convenience of using this ventilator face mask and increasing the overall practicality.

[0025] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0026] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilator mask for ICU critical care, comprising a mask body (1) and a lower limit belt (2) fixedly mounted on the outside of the mask body (1); Features: A sealing ring belt (4) is nested and installed at the lower end of the mask body (1), and a mounting cylinder (5) is fixedly installed at the upper end of the mask body (1), and a filter block (6) is arranged inside the mounting cylinder (5), an air inlet interface (7) is fixedly installed at the upper end of the mask body (1), and an upper limit belt (3) is fixedly installed on the outer side of the mask body (1); The outer side of the mask body (1) is provided with a filter block (6) quick disassembly structure, the outer side of the mask body (1) is provided with a filter block (6) automatic clamping structure, and the outer side of the mask body (1) is provided with a gastric tube automatic limiting structure.

2. A ventilator mask for ICU critical care according to claim 1, characterized in that: The disassembly structure comprises an exhaust hole (8) and a limit cover (9), wherein the limit cover (9) is snap-fitted and mounted on the upper end of the mounting tube (5), and the exhaust hole (8) is provided inside the limit cover (9) and the mounting tube (5).

3. A ventilator mask for ICU critical care according to claim 2, characterized in that: The limiting cover (9) is provided with a moving groove (11) inside, and a pressing piece (10) is slidably mounted inside the moving groove (11), and two groups of the pressing piece (10) and the moving groove (11) are arranged inside the limiting cover (9); a positioning block (13) is fixedly mounted on the outside of the pressing piece (10), a positioning groove (25) is provided inside the mounting tube (5), and the positioning block (13) is engaged and connected with the positioning groove (25).

4. A ventilator mask for ICU critical care according to claim 3, characterized in that: A return spring (12) is arranged inside the movement groove (11), and two ends of the return spring (12) are respectively fixedly connected to the pressing piece (10) and the limiting cover (9), and a sponge block (14) is nested and installed inside the limiting cover (9), the sponge block (14) is located inside the movement groove (11), and the sponge block (14) and the pressing piece (10) are tightly fitted.

5. The ICU intensive care ventilator mask according to claim 1, characterized in that: The clamping structure comprises a sliding tooth plate (15), and the sliding tooth plate (15) is fixedly mounted on the lower end of the pressing member (10), and the sliding tooth plate (15) is located inside the moving groove (11), and a rotating gear cylinder (16) is rotatably mounted inside the moving groove (11), and the rotating gear cylinder (16) is meshingly connected with the sliding tooth plate (15).

6. A ventilator mask for ICU critical care according to claim 5, characterized in that: The clamping structure also includes a movable tooth plate (17), and the movable tooth plate (17) is slidably mounted inside the limiting cover (9), and a clamping rod (18) is fixedly mounted on the lower end of the movable tooth plate (17), and the movable tooth plate (17) is meshingly connected with the rotating tooth cylinder (16).

7. A ventilator mask for ICU critical care according to claim 1, characterized in that: The lower end of the clamping rod (18) is located inside the filter block (6), and two groups of the clamping rod (18) and the movable tooth plate (17) are symmetrically arranged front and back about the vertical center axis of the rotating tooth cylinder (16).

8. The ICU intensive care ventilator mask according to claim 1, characterized in that: The limiting structure comprises a fixing block (19), wherein the fixing block (19) is fixedly mounted on the outer side of the upper end of the mask body (1), and a docking block (24) is fixedly mounted on the outer side of the fixing block (19), and the docking block (24) is located on a side of the fixing block (19) away from the mounting tube (5).

9. A ventilator mask for ICU critical care according to claim 8, characterized in that: A moving block (20) is slidably mounted on the outer side of the docking block (24), and a docking groove (22) is provided inside the moving block (20). The docking groove (22) is located on the outer side of the moving block (20), and a curved groove (21) is provided at one end of the moving block (20) and the fixed block (19) that are close to each other.

10. A ventilator mask for ICU critical care according to claim 9, characterized in that: A sliding rod (23) is slidably mounted inside the docking groove (22), and an upper magnetic sheet (26) is fixedly mounted on the lower end of the sliding rod (23), and the sliding rod (23) passes through the docking block (24), and a lower magnetic sheet (27) is fixedly mounted on the lower end of the docking groove (22), and the lower magnetic sheet (27) is tightly attracted to the upper magnetic sheet (26), and the upper magnetic sheet (26) and the lower magnetic sheet (27) have opposite magnetic poles.

Citation Information

Patent Citations

  • Breathing machine mask for intensive care unit (ICU)

    CN213964745U

  • Breathing machine mask for intensive care unit (ICU)

    CN220572498U