Anti-pressure sore air cushion
By employing triangular prism structure in the lower, middle, and upper air bladders of the anti-pressure sore air cushion, combined with independent air pump control, the problem of uncontrollable shape of the inflatable anti-pressure sore air cushion is solved, achieving precise control and assisted turning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU UNIVERSITY OF CHINESE MEDICINE
- Filing Date
- 2025-05-21
- Publication Date
- 2026-07-07
AI Technical Summary
Existing inflatable pressure ulcer prevention cushions have a simple structure and cannot accurately control the inflation and deflation areas, resulting in uncontrollable shape changes and difficulty in assisting with effective turning over.
It adopts a triangular prism structure composed of lower, middle and upper airbags. The inflation and deflation of each airbag is independently controlled by an air pump, which can achieve precise control of the inflation and deflation area and increase the range of inflation angle selection.
It achieves controllability of shape changes during inflation and deflation, improves the convenience and safety of assisted turning, reduces the contact area with the user, and avoids the occurrence of pressure sores.
Smart Images

Figure CN224461925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of medical care equipment, and in particular to an anti-pressure ulcer air cushion. Background Technology
[0002] Existing inflatable pressure ulcer prevention air mattresses are generally simple square structures with simple inflation structures and no reasonable zoning, which makes it impossible to accurately control the deflation area. As a result, the shape changes of the inflatable pressure ulcer prevention air mattress during the inflation and deflation process cannot be controlled, making it difficult to assist in turning over. Utility Model Content
[0003] The aim is to solve at least one of the technical problems existing in the prior art. This utility model provides an anti-pressure sore air cushion that precisely controls the inflation and deflation area, so that the shape change of the air cushion during the inflation and deflation process is within a controllable range, thereby making it easier to assist in turning over.
[0004] To achieve the above objectives, this utility model provides an anti-pressure ulcer air cushion. This utility model relates to the technical field of medical care equipment and discloses an anti-pressure ulcer air cushion, including a first air bladder, a second air bladder, and an air pump. The first and second air bladders are each air bladder groups. The air bladder groups include a lower air bladder, a middle air bladder, and an upper air bladder that are stacked sequentially in the height direction and are respectively connected to the air pump. The lower air bladder, the middle air bladder, and the upper air bladder are all triangular prisms. The lower air bladder includes an inner support surface, a bottom surface, a lower side surface, and a lower contact surface. The inner support surface, the bottom surface, and the lower contact surface are connected sequentially. The bottom surface, the inner support surface, and the lower contact surface are connected to the lower side surfaces on opposite sides. The middle air bladder is connected to the lower contact surface, and the upper air bladder is connected to the middle air bladder. The upper air bladder includes a bearing surface located on the side opposite to the lower air bladder. The inner support surface of the first air bladder is connected to the inner support surface of the second air bladder.
[0005] As a preferred embodiment, the middle airbag and the lower airbag are both right-angled triangular prisms. The middle airbag includes an outer support surface, a middle side surface, a first middle layer contact surface, and a second middle layer contact surface. The outer support surface is perpendicular to the second middle layer contact surface. The outer support surface, the first middle layer contact surface, and the second middle layer contact surface are connected sequentially. The middle side surface is connected to the opposite sides of the outer support surface, the first middle layer contact surface, and the second middle layer contact surface. The first middle layer contact surface is connected to the lower layer contact surface, and the second middle layer contact surface is connected to the upper airbag.
[0006] As a preferred embodiment, the upper airbag is a right-angled triangular prism, and the upper airbag includes an upper outer support surface, an upper side surface, an upper contact surface, and a bearing surface. The upper outer support surface is perpendicular to the upper contact surface. The upper outer support surface, the upper contact surface, and the bearing surface are connected in sequence. The middle side surface is connected to the opposite sides of the upper outer support surface, the upper contact surface, and the bearing surface. The upper contact surface is connected to the second middle contact surface.
[0007] As a preferred embodiment, the air pump is provided with an upper connecting pipe, a middle connecting pipe and a lower connecting pipe. The upper connecting pipe is connected to the upper airbag, the middle connecting pipe is connected to the middle airbag, and the lower connecting pipe is connected to the lower airbag.
[0008] As a preferred embodiment, the air pump is equipped with a control button, a valve body, and an airbag controller. The upper connecting pipe, the middle connecting pipe, and the lower connecting pipe are each equipped with a valve body. The valve body and the control button are electrically connected to the airbag controller. The air pump is connected to the outer periphery of the airbag assembly.
[0009] As a preferred embodiment, the first airbag and the second airbag each include a plurality of airbag groups, and adjacent airbag groups are connected by the lower side.
[0010] As a preferred embodiment, the air pumps of adjacent airbag assemblies are connected and fixed.
[0011] As a preferred embodiment, the system also includes a central controller, with the airbag controllers of the plurality of airbag groups electrically connected to the central controller.
[0012] As a preferred embodiment, the connection points of the upper airbag, the middle airbag, and the lower airbag are each provided with an arc surface.
[0013] Compared with existing technologies, the advantages of this invention's anti-pressure ulcer air cushion are as follows: The anti-pressure ulcer air cushion is formed by connecting at least two adjacent airbag groups, with the lower, middle, and upper airbags stacked sequentially along the height direction. After inflation, the lower airbag serves as the support at the bottom of the anti-pressure ulcer air cushion. The lower airbag includes an inner support surface, a bottom surface, a lower side surface, and a lower contact surface. The inner support surface, the bottom surface, and the lower contact surface are sequentially connected to form a triangle. The bottom surface is in contact with the bed surface to ensure a certain contact area, meeting the stability requirements of the anti-pressure ulcer air cushion. The inner support extends in the height direction to maintain a certain height for the lower airbag. On this basis, the middle and upper airbags are stacked. Since the middle and upper airbags are triangular prisms and are used in a stacked manner, the range of inflation angles can be increased. At the same time, since the middle and upper airbags are independent bladders, the inflation of the airbags can be more accurately controlled by the air pump, thereby achieving precise control of the inflation and deflation areas. This ensures that the shape change of the inflatable pressure ulcer prevention airbag during inflation and deflation is within a controllable range, making it easier to assist in turning over. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the anti-pressure sore air cushion according to an embodiment of this utility model.
[0015] Figure 2 This is a front view of the anti-pressure sore air cushion of this utility model embodiment.
[0016] Figure 3 This is a top view of the anti-pressure sore air cushion of this utility model embodiment.
[0017] Figure 4 This is a side view of the anti-pressure sore air cushion of this utility model embodiment.
[0018] Figure 5 This is a schematic diagram of the air pump according to an embodiment of the present invention.
[0019] In the picture:
[0020] 10. First airbag; 11. Second airbag; 12. Airbag assembly; 13. Arc surface; 14. Air pump; 15. Upper connecting pipe; 16. Middle connecting pipe; 17. Lower connecting pipe; 18. Control button;
[0021] 20. Lower airbag; 21. Inner support surface; 22. Bottom surface; 23. Lower side surface; 24. Lower contact surface
[0022] 30. Mid-layer airbag; 31. Mid-outer support surface; 32. Mid-side surface; 33. First mid-layer contact surface; 34. Second mid-layer contact surface;
[0023] 40. Upper airbag; 41. Outer support surface; 42. Upper side surface; 43. Upper contact surface; 44. Bearing surface. Detailed Implementation
[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] In the description of this utility model, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] like Figures 1 to 5 As shown, a preferred embodiment of the present invention provides an anti-pressure sore air cushion, comprising a first airbag 10, a second airbag 11, and an air pump 14. The first airbag 10 and the second airbag 11 are each an airbag assembly 12. The airbag assembly 12 includes a lower airbag 20, a middle airbag 30, and an upper airbag 40, which are stacked sequentially in the height direction and respectively connected to the air pump 14. The lower airbag 20, the middle airbag 30, and the upper airbag 40 are each a triangular prism. The lower airbag 20 includes an inner support surface 21, a bottom surface 22, a lower side surface 23, and a... The lower contact surface 24, the inner support surface 21, the bottom surface 22 and the lower contact surface 24 are connected in sequence. The bottom surface 22, the inner support surface 21 and the lower contact surface 24 are connected to the opposite sides of the lower contact surface 23. The middle airbag 30 is connected to the lower contact surface 24. The upper airbag 40 is connected to the middle airbag 30. The upper airbag 40 includes a bearing surface 44 located on the side opposite to the lower airbag 20. The inner support surface 21 of the first airbag 10 is connected to the inner support surface 21 of the second airbag 11.
[0028] This invention relates to an anti-pressure ulcer air cushion, which is formed by connecting at least two adjacent airbag groups 12. The lower airbag 20, the middle airbag 30, and the upper airbag 40 are stacked sequentially along the height direction. After the lower airbag 20 is inflated, it serves as the support for the bottom of the anti-pressure ulcer air cushion. The lower airbag 20 includes an inner support surface 21, a bottom surface 22, a lower side surface 23, and a lower contact surface 24. The inner support surface 21, the bottom surface 22, and the lower contact surface 24 are sequentially connected to form a triangle. The bottom surface 22 is in contact with the bed surface to ensure a certain contact area, thus meeting the stability requirements of the anti-pressure ulcer air cushion. The inner support surface 21 extends in the height direction to maintain a certain height for the lower airbag 20. On this basis, the middle airbag 30 and the upper airbag 40 are superimposed. Since the middle airbag 30 and the upper airbag 40 are triangular prisms and are used in a superimposed manner, the range of inflation angle selection is increased. At the same time, since the middle airbag 30 and the upper airbag 40 are independent bladders, the inflation of the airbags can be more accurately controlled by the air pump 14, thereby achieving precise control of the inflation and deflation area. This ensures that the shape change of the inflatable pressure ulcer prevention airbag during inflation and deflation is within a controllable range, making it easier to assist in turning over.
[0029] It should be noted that a triangular prism is a column formed by extending a certain length from a triangular cross-section.
[0030] In one embodiment, the inner support surface 21 is set perpendicular to the bottom surface 22 to improve the support effect of the lower airbag 20 after inflation.
[0031] Furthermore, such as Figures 1 to 2 As shown, the middle airbag 30 and the lower airbag 20 are both right-angled triangular prisms. The middle airbag 30 includes an outer support surface 31, a middle side surface 32, a first middle layer contact surface 33, and a second middle layer contact surface 34. The outer support surface 31 and the second middle layer contact surface 34 are perpendicular. The outer support surface 31, the first middle layer contact surface 33, and the second middle layer contact surface 34 are connected sequentially. The middle side surface 32 is connected to the opposite sides of the outer support surface 31, the first middle layer contact surface 33, and the second middle layer contact surface 34. The first middle layer contact surface 33 is connected to the lower layer contact surface 24, and the second middle layer contact surface 34 is connected to the upper airbag 40. When the upper airbag 40 is not inflated, the lower airbag 20 and the middle airbag 30, which are both right-angled triangular prisms, connect to form a cuboid after inflation, to meet the user's needs when lying flat.
[0032] Furthermore, such as Figures 1 to 2As shown, the upper airbag 40 is a right-angled triangular prism. The upper airbag 40 includes an upper outer support surface 41, an upper side surface 42, an upper contact surface 43, and a bearing surface 44. The upper outer support surface 41 is perpendicular to the upper contact surface 43. The upper outer support surface 41, the upper contact surface 43, and the bearing surface 44 are connected in sequence. The middle side surface 32 is connected to the opposite sides of the upper outer support surface 41, the upper contact surface 43, and the bearing surface 44. The upper contact surface 43 is connected to the second middle contact surface 34. The upper contact surface 43 is connected to the second middle contact surface 34 to connect the upper airbag 40 and the middle airbag 30. After the upper airbag 40 is inflated, its outer side is higher than its inner side. After the first airbag 10 and the second airbag 11 are connected, the two bearing surfaces 44 form a V-shape, creating a turning limit on the outer side of the upper airbag 40 to prevent the danger of falling from one side during turning. Specifically, when turning is required, the middle airbag 30 and / or the upper airbag 40 of the first airbag 10 are deflated to lower the height of the first airbag 10. The middle airbag 30 and the upper airbag 40 of the second airbag 11 are inflated, so that the height of the second airbag 11 is higher than the height of the first airbag 10, in order to facilitate turning.
[0033] Furthermore, such as Figure 5 As shown, the air pump 14 is equipped with an upper connecting pipe 15, a middle connecting pipe 16, and a lower connecting pipe 17. The upper connecting pipe 15 is connected to the upper airbag 40, the middle connecting pipe 16 is connected to the middle airbag 30, and the lower connecting pipe 17 is connected to the lower airbag 20. The upper connecting pipe 15, the middle connecting pipe 16, and the lower connecting pipe 17 are each individually connected to different airbags to facilitate the individual inflation and deflation of the upper airbag 40, the middle airbag 30, and the lower airbag 20, thereby improving the accuracy and ease of operation.
[0034] Furthermore, the air pump 14 is equipped with a control button 18, a valve body, and an airbag controller. The upper connecting pipe 15, the middle connecting pipe 16, and the lower connecting pipe 17 are respectively equipped with valve bodies. The valve bodies and the control button 18 are electrically connected to the airbag controller. The air pump 14 is connected to the outer periphery of the airbag assembly 12 so that the control button 18 is exposed on the outer periphery of the first airbag 10 and the second airbag 11 for easy use and operation.
[0035] As one embodiment, such as Figures 1 to 4 As shown, the air pump 14 is connected to the lower side 23 or the middle outer support surface 31, so that the control button 18 is exposed for easy use and operation.
[0036] As one embodiment, the air pump 14 can both pump air and evacuate air, and this air pump 14 is the prior art.
[0037] Furthermore, such as Figures 1 to 4 As shown, the first airbag 10 and the second airbag 11 each include multiple airbag groups 12, and adjacent airbag groups 12 are connected by the lower side surface 23. The multiple airbag groups 12 are connected to allow for individual control of each group, resulting in more precise control. By partially deflating and partially inflating the airbag groups 12, the bearing surfaces 44 of the multiple airbag groups 12 are connected to form a concave-convex surface. Different degrees of inflation and deflation control the degree of concavity and convexity. The protruding positions provide support for the user, while the concave positions do not contact the user, thereby reducing and changing the contact surface with the user and preventing prolonged contact between the user lying flat and the bearing surface 44, which could cause ventilation problems.
[0038] Furthermore, such as Figures 1 to 4 As shown, the air pumps 14 of adjacent airbag groups 12 are connected and fixed, which improves the overall connection of multiple airbag groups 12 and facilitates movement.
[0039] Furthermore, it also includes a central controller, with each of the airbag controllers of the multiple airbag assemblies 12 electrically connected to the central controller. The central controller integrates and controls the multiple airbag controllers, improving control convenience and making operation easier.
[0040] Furthermore, such as Figures 1 to 4 As shown, the connection points of the upper airbag 40, the middle airbag 30, and the lower airbag 20 are each provided with an arc surface 13. The arc surface 13 is designed to prevent scratches to the user and improve safety during use.
[0041] In summary, this utility model embodiment provides an anti-pressure ulcer air cushion, which is formed by connecting at least two adjacent airbag groups 12. The lower airbag 20, the middle airbag 30, and the upper airbag 40 are stacked sequentially along the height direction. After the lower airbag 20 is inflated, it serves as the support for the bottom of the anti-pressure ulcer air cushion. The lower airbag 20 includes an inner support surface 21, a bottom surface 22, a lower side surface 23, and a lower contact surface 24. The inner support surface 21, the bottom surface 22, and the lower contact surface 24 are sequentially connected to form a triangle. The bottom surface 22 is in contact with the bed surface to ensure a certain area of contact with the bed surface, thus meeting the stability requirements of the anti-pressure ulcer air cushion. The inner support surface 21 extends in the height direction to maintain a certain height for the lower airbag 20. On this basis, the middle airbag 30 and the upper airbag 40 are superimposed. Since the middle airbag 30 and the upper airbag 40 are triangular prisms and are used in a superimposed manner, the range of inflation angle selection is increased. At the same time, since the middle airbag 30 and the upper airbag 40 are independent bladders, the inflation of the airbags can be more accurately controlled by the air pump 14, thereby achieving precise control of the inflation and deflation area. This ensures that the shape change of the inflatable pressure ulcer prevention airbag during inflation and deflation is within a controllable range, making it easier to assist in turning over.
[0042] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.
Claims
1. An anti-pressure sore air cushion, characterized in that: The device includes a first airbag, a second airbag, and an air pump. The first and second airbags are each airbag groups. Each airbag group includes a lower airbag, a middle airbag, and an upper airbag that are stacked sequentially in the height direction and are respectively connected to the air pump. The lower airbag, the middle airbag, and the upper airbag are all triangular prisms. The lower airbag includes an inner support surface, a bottom surface, a lower side surface, and a lower contact surface. The inner support surface, the bottom surface, and the lower contact surface are connected sequentially. The bottom surface, the inner support surface, and the lower contact surface are connected to the opposite sides of the lower surface. The middle airbag is connected to the lower contact surface, and the upper airbag is connected to the middle airbag. The upper airbag includes a bearing surface located on the side opposite to the lower airbag. The inner support surface of the first airbag is connected to the inner support surface of the second airbag.
2. The pressure ulcer prevention air cushion according to claim 1, characterized in that: The middle airbag and the lower airbag are both right-angled triangular prisms. The middle airbag includes an outer support surface, a middle side surface, a first middle layer contact surface, and a second middle layer contact surface. The outer support surface and the second middle layer contact surface are perpendicular. The outer support surface, the first middle layer contact surface, and the second middle layer contact surface are connected in sequence. The middle side surface is connected to the opposite sides of the outer support surface, the first middle layer contact surface, and the second middle layer contact surface. The first middle layer contact surface is connected to the lower layer contact surface, and the second middle layer contact surface is connected to the upper airbag.
3. The pressure ulcer prevention air cushion according to claim 2, characterized in that: The upper airbag is a right-angled triangular prism. The upper airbag includes an upper outer support surface, an upper side surface, an upper contact surface, and a bearing surface. The upper outer support surface is perpendicular to the upper contact surface. The upper outer support surface, the upper contact surface, and the bearing surface are connected in sequence. The middle side surface is connected to the opposite sides of the upper outer support surface, the upper contact surface, and the bearing surface. The upper contact surface is connected to the second middle contact surface.
4. The pressure ulcer prevention air cushion according to claim 1, characterized in that: The air pump is equipped with an upper connecting pipe, a middle connecting pipe and a lower connecting pipe. The upper connecting pipe is connected to the upper airbag, the middle connecting pipe is connected to the middle airbag and the lower connecting pipe is connected to the lower airbag.
5. The pressure ulcer prevention air cushion according to claim 4, characterized in that: The air pump is equipped with a control button, a valve body, and an airbag controller. The upper, middle, and lower connecting pipes are each equipped with a valve body. The valve body and the control button are electrically connected to the airbag controller. The air pump is connected to the outer periphery of the airbag assembly.
6. The pressure ulcer prevention air cushion according to claim 4, characterized in that: The first airbag and the second airbag each include a plurality of airbag groups, and adjacent airbag groups are connected by the lower side.
7. The pressure ulcer prevention air cushion according to claim 6, characterized in that: The air pumps of adjacent airbag assemblies are connected and fixed.
8. The pressure ulcer prevention air cushion according to claim 5, characterized in that: It also includes a master controller, and the airbag controllers of the multiple airbag groups are electrically connected to the master controller.
9. The pressure ulcer prevention air cushion according to claim 1, characterized in that: The connection points of the upper airbag, the middle airbag, and the lower airbag are each provided with an arc surface.