A pressure sore prevention respirator for intensive care unit

Abstract

This invention provides a breathing mask for intensive care units to prevent pressure ulcers, belonging to the field of medical device technology. It includes a mask body, a base assembly, and a strap assembly. The base assembly supports the mask body and distributes pressure. Two sets of expandable cavities are respectively provided on the inner and outer sides of the mask body opening. An inflation assembly is connected to the air inlet of each cavity, and the inflation assembly alternately inflates the two cavities. The strap assembly includes a first strap and a second strap fixedly installed on both sides of the mask body. A telescopic member is provided between the first and second straps, which can move relative to each other in response to respiratory movements. The base assembly includes an outer sleeve and an inner sleeve. In this design, by alternately pressing the push rod, the first and second air bladders are alternately compressed, causing the outer sleeve and inner sleeve to alternately expand, thereby reducing continuous pressure on the patient's face and preventing pressure ulcers.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a breathing mask for use in intensive care units to prevent pressure ulcers. Background Technology

[0002] In intensive care units, patients often require prolonged use of breathing masks for assisted or mechanical ventilation to maintain normal respiratory function. However, traditional breathing masks have a significant technical drawback: they easily cause pressure sores on the patient's face. Pressure sores, also known as pressure ulcers, are caused by prolonged pressure on the skin and subcutaneous tissue, leading to impaired local blood circulation and subsequent tissue damage or even necrosis. In the ICU environment, patients are often bedridden with limited physical activity and may have multiple risk factors such as malnutrition, fragile skin, and impaired blood circulation, making them more susceptible to pressure sores. The use of breathing masks, especially when worn for extended periods, directly compresses certain areas of the face.

[0003] Existing breathing masks are typically designed with soft silicone or rubber to conform to facial contours and provide a seal, ensuring effective delivery of oxygen or positive pressure ventilation. However, while these materials can reduce skin friction and irritation to some extent, they still cannot effectively distribute pressure during prolonged wear, leading to continuous pressure on local tissues and potentially causing pressure ulcers. Furthermore, pressure ulcer prevention depends not only on the design of the breathing mask but also on the daily practices of caregivers and the individual patient's condition. However, due to the complexity of ICU patients' conditions and the high workload of caregivers, it is often difficult to continuously monitor and adjust the wearing of breathing masks in a timely manner.

[0004] In summary, existing breathing masks for intensive care units have significant technical drawbacks during use, namely, they easily exert continuous pressure on facial skin, leading to pressure sores. This problem not only affects patient comfort and recovery outcomes but may also cause serious complications. Therefore, a pressure-sore-preventing breathing mask for intensive care units is proposed. Summary of the Invention

[0005] This invention provides a pressure-ulcer-preventing respiratory mask for intensive care units, addressing the problem that existing intensive care unit respiratory masks easily cause continuous pressure on facial skin during use, leading to pressure ulcers. This issue not only affects patient comfort and recovery outcomes but may also lead to serious complications.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A pressure ulcer prevention breathing mask for intensive care unit includes a mask body, a base assembly, and a strap assembly. The base assembly is used to support the mask body and distribute pressure. The base assembly is provided with two sets of expandable cavities at the inner and outer sides of the opening of the mask body. The air inlet end of the cavity is connected to an inflation assembly, which is used to alternately inflate the two sets of cavities.

[0008] The strap assembly includes a first strap and a second strap fixedly installed on both sides of the cover. An extension member is provided between the first strap and the second strap, and the extension member can move the first strap and the second strap relative to each other in response to breathing movements.

[0009] Optionally, the base assembly includes an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve being adapted to the dimensions of the outer and inner sides of the cover opening, respectively. The outer sleeve and the inner sleeve form independently inflatable and deflated cavities on the outer and inner sides of the cover opening. A connecting seat is fixedly connected between the outer sleeve and the inner sleeve, and the cover opening side is fixedly connected to the connecting seat. A connecting pipe is fixedly connected to the air inlet end of both the outer sleeve and the inner sleeve. The outer sleeve is connected to a first airbag through the connecting pipe, and the inner sleeve is connected to a second airbag through the connecting pipe. The first airbag and the second airbag are detachably installed in the inflation assembly, and the inflation assembly is used to alternately compress the first airbag and the second airbag.

[0010] Optionally, the inflation assembly includes a box body with two sets of receiving cavities on both sides for loading a first airbag and a second airbag, respectively. Push rods are slidably inserted into the side walls of the box body, and a compression plate is slidably connected inside the box body. One end of the push rod is fixedly connected to the compression plate.

[0011] Optionally, grooves are provided on the inner walls of the two sets of receiving cavities on the side that are close to each other in the box body, and the two sets of push rods are arranged opposite each other on the inner walls of the two sets of receiving cavities at their far ends. A control mechanism is provided inside the box body. During the alternating compression process, the control mechanism is used to fix or release the compression plate.

[0012] Optionally, the control mechanism includes a first sliding groove formed on the bottom surface of the box body, a second sliding groove formed in the middle of the box body, the first sliding groove and the second sliding groove being connected, the compression plates being all L-shaped, the horizontal part of the compression plates being slidably installed inside the first sliding groove, the horizontal parts of the two sets of compression plates being arranged opposite to each other, a first spring being fixedly connected between the compression plates and the inner surface of the first sliding groove, a limit block being slidably connected inside the second sliding groove, the limit block being an inverted U-shape, a second spring being fixedly connected between the closed end of the limit block and the top surface of the second sliding groove, the outer side of the open end of the limit block being set as an inclined surface, the horizontal part of the compression plates being provided with limit grooves, and the open end of the limit block being inserted into the limit groove.

[0013] Optionally, each of the receiving cavities of the box body is fitted with a cover, and the two sets of covers are connected to each other on one side of the box body by a connecting plate. Guide rods are fixedly connected to both ends of the connecting plate. A cylindrical groove adapted to the guide rod is opened on the inner wall of the box body. A connecting spring is fitted on the outer surface of the guide rod. One end of the connecting spring is fixedly connected to the inner wall of the cylindrical groove, and the other end of the connecting spring is fixedly connected to the end of the guide rod.

[0014] Optionally, the surface of the cover is provided with a breathing valve, the breathing valve includes a cylinder, a valve port is opened on one side of the outer surface of the cylinder, a valve plate is provided inside the cylinder, and a support spring is fixedly connected between the valve plate and the top wall of the cylinder.

[0015] Optionally, the telescopic component includes a sliding sleeve fixedly installed at one end of the second belt body, a movable piece slidably connected inside the sliding sleeve, and one end of the movable piece extending through to the outside of the sliding sleeve and connected to the first belt body.

[0016] Optionally, a connecting rope is fixedly connected to the surface of the valve plate, and the connecting rope passes through the cylinder and is fixedly connected to the sliding sleeve and the movable plate.

[0017] Optionally, when no external force is applied, the support spring positions the valve plate below the valve port, the valve port is not connected to the cover, the connecting rope is taut, and the movable plate is located inside the sliding sleeve.

[0018] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0019] In the above scheme, by alternately pressing the push rod, the first and second airbags are alternately compressed, which causes the outer and inner tubes to alternately expand, thereby reducing continuous pressure on the patient's face and avoiding pressure sores.

[0020] Through the coordinated action of the breathing valve and the telescopic component, the mask's straps automatically loosen during exhalation to reduce pressure, and automatically return to their original position during inhalation to maintain stability. This structural design not only improves the mask's comfort but also enhances its functionality, making it particularly suitable for patients who wear it for extended periods. It helps reduce the risk of pressure sores and improves the overall user experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the pressure ulcer prevention breathing mask for intensive care units according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the base assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the inflatable component of the present invention;

[0024] Figure 4This is a schematic diagram of the cover and connecting plate in the inflatable assembly of the present invention;

[0025] Figure 5 This is a cross-sectional view of the structure of the inflatable assembly of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of a local structure in the image;

[0027] Figure 7 This is a schematic diagram of the structure when the limiting block of the present invention is raised;

[0028] Figure 8 This is a cross-sectional view of the breathing valve and strap assembly of the present invention.

[0029] [Figure Labels]

[0030] 1. Cover;

[0031] 2. Base support assembly; 21. Outer sleeve; 22. Inner sleeve; 23. Connecting seat; 24. Connecting tube; 25. First airbag; 26. Second airbag;

[0032] 3. Inflatable assembly; 31. Box body; 32. Cover body; 33. Groove body; 34. Connecting plate; 35. Compression plate; 36. Push rod; 37. Cylindrical groove; 38. Guide rod; 39. Connecting spring;

[0033] 4. Strap assembly; 41. First strap body; 42. Movable piece; 43. Sliding sleeve; 44. Second strap body; 45. Connecting rope;

[0034] 5. Breathing valve; 51. Cylinder; 52. Valve plate; 53. Valve port; 54. Support spring;

[0035] 6. Control mechanism; 61. First slide groove; 62. Second slide groove; 63. Limiting groove; 64. Limiting block; 65. First spring; 66. Second spring. Detailed Implementation

[0036] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 3As shown, an embodiment of the present invention provides a pressure ulcer prevention respiratory mask for intensive care units, including a mask body 1, a base assembly 2, and a strap assembly 4. The mask body 1 is the main part of the mask, used to cover the patient's mouth and nose area to ensure the delivery of oxygen or positive pressure ventilation. The base assembly 2 is used to support the mask body 1 and distribute pressure. The base assembly 2 is provided with two sets of expandable cavities on the inner and outer sides of the opening of the mask body 1, respectively. The air inlet end of the cavity is connected to an inflation assembly 3, which is used to alternately inflate the two sets of cavities. By inflating, the cavities deform, thereby changing the degree of fit of the mask body 1 to the patient's face.

[0038] like Figure 8 As shown, the strap assembly 4 includes a first strap 41 and a second strap 44 fixedly installed on both sides of the cover 1. An elastic element is provided between the first strap 41 and the second strap 44. The elastic element can move the first strap 41 and the second strap 44 relative to each other in response to breathing movements, reducing continuous pressure on the skin. Specifically,

[0039] like Figure 2 As shown, the base assembly 2 includes an outer sleeve 21 and an inner sleeve 22. The outer sleeve 21 and the inner sleeve 22 are adapted to the dimensions of the outer and inner sides of the opening of the cover 1, respectively. The outer sleeve 21 and the inner sleeve 22 form independently inflatable and deflated cavities on the outer and inner sides of the opening of the cover 1. A connecting seat 23 is fixedly connected between the outer sleeve 21 and the inner sleeve 22 to ensure the stability of the overall structure. The opening side of the cover 1 is fixedly connected to the connecting seat 23. The air inlet ends of the outer sleeve 21 and the inner sleeve 22 are both fixedly connected to the connecting pipe 24. The outer sleeve 21 is connected to the first airbag 25 through the connecting pipe 24, and the inner sleeve 22 is connected to the second airbag 26 through the connecting pipe 24. The first airbag 25 and the second airbag 26 are detachably installed in the inflation assembly 3. The inflation assembly 3 is used to alternately compress the first airbag 25 and the second airbag 26. By alternately compressing, the outer sleeve 21 and the inner sleeve 22 alternately expand, thereby avoiding local continuous pressure.

[0040] like Figure 5 As shown, the inflation assembly 3 includes a box body 31. Two sets of receiving cavities are provided on both sides of the box body 31, which are used to load the first airbag 25 and the second airbag 26 respectively. Push rods 36 are slidably inserted into the side walls of the box body 31. A compression plate 35 is slidably connected inside the box body 31. One end of the push rod 36 is fixedly connected to the compression plate 35.

[0041] like Figure 3 As shown, grooves 33 are provided on the inner walls of the two sets of accommodating cavities on the side of the box body 31. Two sets of push rods 36 are arranged opposite each other on the inner walls of the two sets of accommodating cavities at the far ends. A control mechanism 6 is provided inside the box body 31. During the alternating compression process, the control mechanism 6 is used to fix or release the compression plate 35.

[0042] like Figures 5 to 7As shown, the control mechanism 6 includes a first slide groove 61 formed on the bottom surface of the inner side of the box 31, and a second slide groove 62 formed in the middle of the box 31. The first slide groove 61 and the second slide groove 62 are connected. The compression plates 35 are all L-shaped. The horizontal part of the compression plates 35 is slidably installed inside the first slide groove 61. The horizontal parts of the two sets of compression plates 35 are arranged opposite each other. A first spring 65 is fixedly connected between the compression plates 35 and the inner surface of the first slide groove 61. A limit block 64 is slidably connected inside the second slide groove 62. The limit block 64 is set as an inverted U-shape. A second spring 66 is fixedly connected between the closed end of the limit block 64 and the top surface of the second slide groove 62. The outer side of the open end of the limit block 64 is set as an inclined surface. A limit groove 63 is formed on the horizontal part of the compression plates 35. The open end of the limit block 64 is inserted into the limit groove 63.

[0043] In actual operation, by alternately pressing the push rod 36, the first airbag 25 and the second airbag 26 are alternately compressed, which causes the outer sleeve 21 and the inner sleeve 22 to alternately expand, thereby reducing continuous pressure on the patient's face and avoiding the occurrence of pressure sores.

[0044] In this embodiment, the alternating expansion and contraction process of the outer sleeve 21 and inner sleeve 22 is specifically illustrated by pressing the left push rod 36 first, followed by the right push rod 36. First, when the operator presses the left push rod 36, the push rod 36 moves inward along the sliding direction of the housing 31. One end of the push rod 36 is fixedly connected to the compression plate 35, so the movement of the push rod 36 causes the compression plate 35 to slide inward together. The compression plate 35 applies pressure to the first airbag 25 in the left receiving cavity, causing it to compress and deform. The gas inside the first airbag 25 enters the cavity of the outer sleeve 21 through the connecting tube 24. At this time, the outer sleeve 21 is in an inflated state, conforming to the patient's face and serving to support the housing 1. Additionally, when the left push rod 36 is pressed, the horizontal part of the compression plate 35 causes the first spring 65 to move. This causes the compression plate 35 to undergo elastic deformation, thereby storing a certain amount of elastic potential energy. At the same time, the horizontal part of the compression plate 35 moves inside the first slide groove 61. Since the opening end of the limiting block 64 is designed with a slope, the compression plate 35 will push the limiting block 64 to move upward along the second slide groove 62 during the movement, and compress the second spring 66. When the limiting groove 63 on the horizontal part of the compression plate 35 is aligned with the opening end of the limiting block 64, the compressed second spring 66 is reset, driving the limiting block 64 to move into the limiting groove 63 and fix the compression plate 35.

[0045] After ventilation for a period of time, the operator presses the right-side push rod 36. The push rod 36 also moves inward along the sliding direction of the housing 31, pushing the right-side compression plate 35 to slide inward, compressing the second airbag 26. The internal gas enters the cavity of the inner sleeve 22 through the connecting tube 24, causing the inner sleeve 22 to expand, thereby changing its fit with the patient's face. At this time, the horizontal part of the right-side compression plate 35 moves in the first slide groove 61. Since the horizontal part of the compression plate 35 is fixedly connected to the inner surface of the first slide groove 61, when the right-side push rod 36 is pressed, the first spring 65 is also compressed, storing elastic potential energy. At the same time, the vertical part of the right-side compression plate 35 pushes the limiting block 64 to slide along the second slide groove 62. The opening end of the limiting block 64 is designed with a bevel. When the vertical part of the compression plate 35 contacts the limiting block 64, the bevel structure will guide the limiting block 64 to move upward along the second slide groove 62, compressing the second spring 66. At this time, the limiting block 64 moves out of the limiting groove 63 on the left compression plate 35, and the first spring 65 on the left side drives the left compression plate 35 to rebound, so that the first airbag 25 on the left side is no longer compressed, and the gas inside it flows back to the first airbag 25 through the connecting pipe 24. The outer sleeve 21 then contracts and returns to its original shape. At this time, the outer sleeve 21 is no longer in an expanded state, but gradually retracts, thereby reducing the pressure on the outside of the patient's face; when the right push rod 36 is fully pressed into place, the limiting groove 63 of the right compression plate 35 will align with the open end of the limiting block 64, and the elastic force of the second spring 66 will cause the limiting block 64 to return downward, and the open end of the limiting block 64 will be inserted into the limiting groove 63 of the right compression plate 35, thereby fixing the position of the right compression plate 35 and preventing it from rebounding after compression.

[0046] In summary, by alternately pressing the two sets of push rods 36, the operator can alternately expand and contract the outer sleeve 21 and the inner sleeve 22, thereby changing the support position of the mask and avoiding pressure sores caused by long-term pressure on the same part of the face.

[0047] The push rod 36 is manually driven, allowing the operator to compress the cuff by manually pressing it. This method is simple and intuitive, suitable for scenarios where equipment operation requirements are not high or flexible control is needed. However, in practical applications, the push rod 36 can also be driven by other power mechanisms to achieve more automated and intelligent operation, improving efficiency and adapting to different clinical needs. For example, an electric drive device, such as a motor or electromagnetic drive mechanism, can be used to automatically press the push rod 36 through a control circuit. In this case, the electric drive can automatically adjust the compression frequency and force according to a preset program or real-time sensor data, reducing the workload of medical staff while improving the accuracy and stability of the equipment.

[0048] The interval between compressions using lever 36 can be flexibly set according to the patient's actual condition to achieve the best pressure relief effect. In manual operation mode, medical staff can manually adjust the compression frequency and interval based on the pressure on the patient's face, skin condition, and respiratory rate.

[0049] Furthermore, the inflation component 3 may also consist of a micro air pump, a solenoid valve, and a controller, which can realize the automatic alternating inflation and deflation of the airbag through a preset program.

[0050] like Figure 4 As shown, each of the cavity openings of the box body 31 is fitted with a cover 32. The two sets of covers 32 are connected to each other on one side outside the box body 31 by a connecting plate 34. Guide rods 38 are fixedly connected to both ends of the connecting plate 34. A cylindrical groove 37 adapted to the guide rod 38 is opened on the inner wall of the box body 31. A connecting spring 39 is fitted on the outer surface of the guide rod 38. One end of the connecting spring 39 is fixedly connected to the inner wall of the cylindrical groove 37, and the other end of the connecting spring 39 is fixedly connected to the end of the guide rod 38.

[0051] In the closed state, the cover 32 covers the opening of the receiving cavity and fits tightly against the box 31 to prevent external dust or foreign objects from entering. At this time, the connecting plate 34 connects the two covers 32, enabling them to move synchronously. The guide rod 38 is fixed at both ends of the connecting plate 34 and inserted into the cylindrical groove 37 on the inner wall of the box 31, serving as a guide to ensure that the cover 32 remains stable during opening and closing, without shifting or jamming. When it is necessary to open the cover 32, the operator pulls the connecting plate 34 outward, causing the two covers 32 to move outward simultaneously. At this time, the guide rod 38 slides in the cylindrical groove 37, and the connecting spring 39 is stretched, generating elastic deformation and storing elastic potential energy. As the cover 32 gradually leaves the opening of the receiving cavity, the first airbag 25 and the second airbag 26 inside the receiving cavity are exposed, facilitating installation or removal by the operator. When closing the cover 32, the operator pushes the connecting plate 34, causing the two covers 32 to move inward and cover the opening of the receiving cavity again. At this time, the guide rod 38 slides in the cylindrical groove 37, the connecting spring 39 is compressed, releasing elastic potential energy and helping the cover 32 to return to its original position more smoothly. After the cover 32 completely covers the receiving cavity, the connecting spring 39 returns to its original state, ensuring a tight fit between the cover 32 and the box 31, forming a sealed structure.

[0052] like Figure 8As shown, a breathing valve 5 is provided on the surface of the mask 1. The breathing valve 5 is used to release the gas exhaled by the patient, control the airflow inside the mask, and prevent facial pressure due to excessive air pressure. The breathing valve 5 includes a cylinder 51, a valve port 53 is opened on one side of the outer surface of the cylinder 51, a valve plate 52 is provided inside the cylinder 51, and a support spring 54 is fixedly connected between the valve plate 52 and the top wall of the cylinder 51. The telescopic component includes a sliding sleeve 43 fixedly installed at one end of the second belt 44, and the sliding sleeve 43 is slidably connected inside. There is a movable piece 42, one end of which extends through to the outside of the sliding sleeve 43 and is connected to the first belt body 41. The first belt body 41 and the second belt body 44 are elastic. A connecting rope 45 is fixedly connected to the surface of the valve piece 52. The connecting rope 45 passes through the cylinder 51 and the sliding sleeve 43 and is fixedly connected to the movable piece 42. When there is no external force, the support spring 54 keeps the valve piece 52 below the valve port 53. The valve port 53 is not connected to the cover body 1. The connecting rope 45 is taut. The movable piece 42 is located inside the sliding sleeve 43.

[0053] In the intensive care unit, patients wearing breathing masks have a certain degree of spontaneous breathing ability, and the breathing masks can assist ventilation and oxygenation. In this embodiment, when the patient exhales, the air pressure inside the mask 1 rises accordingly. At this time, the breathing valve 5 begins to function, releasing excess gas and preventing excessive air pressure from compressing the patient's face. During the patient's exhalation, the increased air pressure inside the mask 1 pushes the valve plate 52 upward, thereby opening the valve port 53, allowing the exhaled gas to escape through the valve port 53 and reducing the internal pressure of the mask 1. Simultaneously, as the valve plate 52 moves, the connecting rope 45 is pulled, changing from a taut state to a loose state. At this time, one end of the connecting rope 45 no longer applies a continuous tension to the moving piece 42 inside the sliding sleeve 43, and the moving piece 42 can slide freely within the sliding sleeve 43. Since the first band 41 is fixedly connected to the movable piece 42, and the first band 41 and the second band 44 are elastic, when the movable piece 42 is no longer under the traction of the connecting rope 45, the first band 41 drives the movable piece 42 to move out of the sliding sleeve 43. This relative movement of the first band 41 and the second band 44 causes the mask's fixing straps to automatically loosen when the patient exhales, reducing the pressure on the patient's face. After exhalation, the air pressure inside the mask 1 drops, the support spring 54 returns to its original state, pressing the valve piece 52 back below the valve port 53, closing the valve port 53, restoring the airtightness of the mask 1. At the same time, the valve piece 52 resets, pulling the connecting rope 45 to reset the movable piece 42, causing the first band 41 and the second band 44 to reset, restoring the fixed support for the patient's face.

[0054] Through the linkage between the breathing valve 5 and the telescopic component, the mask's strap assembly 4 automatically loosens when the patient exhales, reducing pressure; and automatically returns to its original position during inhalation, maintaining stability. This structural design not only improves the comfort of the mask but also enhances its functionality, making it particularly suitable for patients who wear it for extended periods. It helps reduce the risk of pressure sores and improves the overall user experience.

[0055] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A pressure ulcer prevention breathing mask for intensive care units, comprising a mask body, a base assembly, and a strap assembly, characterized in that, The base support assembly is used to support the cover and distribute pressure. The base support assembly is provided with two sets of expandable cavities at the positions inside and outside the opening of the cover. The air inlet end of the cavity is connected to an inflation assembly, which is used to alternately inflate the two sets of cavities. The strap assembly includes a first strap and a second strap fixedly installed on both sides of the cover. An extension member is provided between the first strap and the second strap, and the extension member can move the first strap and the second strap relative to each other in response to breathing movements.

2. The pressure ulcer prevention breathing mask for intensive care units according to claim 1, characterized in that, The base assembly includes an outer sleeve and an inner sleeve, which are adapted to the dimensions of the outer and inner sides of the cover opening, respectively. The outer sleeve and the inner sleeve form independently inflatable and deflated cavities on the outer and inner sides of the cover opening. A connecting seat is fixedly connected between the outer sleeve and the inner sleeve, and the cover opening side is fixedly connected to the connecting seat. A connecting pipe is fixedly connected to the air inlet end of both the outer sleeve and the inner sleeve. The outer sleeve is connected to a first airbag through the connecting pipe, and the inner sleeve is connected to a second airbag through the connecting pipe. The first airbag and the second airbag are detachably installed in the inflation assembly, which is used to alternately compress the first airbag and the second airbag.

3. The pressure ulcer prevention breathing mask for intensive care units according to claim 2, characterized in that, The inflation assembly includes a box body with two sets of receiving cavities on both sides for loading a first airbag and a second airbag, respectively. Push rods are slidably inserted into the side walls of the box body, and a compression plate is slidably connected inside the box body. One end of the push rod is fixedly connected to the compression plate.

4. The pressure ulcer prevention breathing mask for intensive care units according to claim 3, characterized in that, The inner wall of the two sets of receiving cavities on the same side of the box body is provided with grooves. The two sets of push rods are arranged opposite each other on the inner wall of the two sets of receiving cavities at opposite ends. The box body is provided with a control mechanism. During the alternating compression process, the control mechanism is used to fix or release the compression plate.

5. The pressure ulcer prevention breathing mask for intensive care units according to claim 4, characterized in that, The control mechanism includes a first sliding groove on the bottom surface of the box body, a second sliding groove in the middle of the box body, the first sliding groove and the second sliding groove being connected, the compression plates are all L-shaped, the horizontal part of the compression plates is slidably installed inside the first sliding groove, the horizontal parts of the two sets of compression plates are arranged opposite each other, a first spring is fixedly connected between the compression plate and the inner surface of the first sliding groove, a limit block is slidably connected inside the second sliding groove, the limit block is set as an inverted U-shape, a second spring is fixedly connected between the closed end of the limit block and the top surface of the second sliding groove, the outer side of the open end of the limit block is set as an inclined surface, the horizontal part of the compression plate is provided with a limit groove, and the open end of the limit block is inserted into the limit groove.

6. The pressure ulcer prevention breathing mask for intensive care units according to claim 5, characterized in that, Each of the box's accommodating cavity openings is fitted with a cover. Two sets of covers are connected to each other on one side of the box exterior via a connecting plate. Guide rods are fixedly connected to both ends of the connecting plate. A cylindrical groove adapted to the guide rod is formed on the inner wall of the box interior. A connecting spring is fitted on the outer surface of each guide rod. One end of the connecting spring is fixedly connected to the inner wall of the cylindrical groove, and the other end of the connecting spring is fixedly connected to the end of the guide rod.

7. The pressure ulcer prevention breathing mask for intensive care units according to claim 1, characterized in that, The surface of the cover is provided with a breathing valve, which includes a cylinder. A valve port is opened on one side of the outer surface of the cylinder. A valve plate is provided inside the cylinder. A support spring is fixedly connected between the valve plate and the top wall of the cylinder.

8. The pressure ulcer prevention breathing mask for intensive care units according to claim 7, characterized in that, The telescopic component includes a sliding sleeve fixedly installed at one end of the second belt body. A movable piece is slidably connected inside the sliding sleeve, and one end of the movable piece extends through to the outside of the sliding sleeve and is connected to the first belt body.

9. The pressure ulcer prevention breathing mask for intensive care units according to claim 8, characterized in that, A connecting rope is fixedly connected to the surface of the valve plate, and the connecting rope passes through the cylinder and is fixedly connected to the sliding sleeve and the moving plate.

10. The pressure ulcer prevention breathing mask for intensive care units according to claim 9, characterized in that, When no external force is applied, the supporting spring positions the valve plate below the valve port, the valve port is not connected to the cover, the connecting rope is taut, and the movable plate is located inside the sliding sleeve.

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