Alternating inflation pressure ulcer prevention mattress
By designing alternating inflatable first and second air bladders on the pressure ulcer prevention pad, combined with inflation channels and an electric air pump, dynamic adjustment of pressure distribution is achieved, solving the problem of pressure concentration in existing technologies and improving the comfort and practicality of the pressure ulcer prevention pad.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN MEDICAL UNIV UNION HOSPITAL
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-23
Smart Images

Figure CN224387679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure ulcer prevention pad technology, specifically a pressure ulcer prevention pad with alternating inflation. Background Technology
[0002] Pressure ulcers (also known as pressure sores) are common complications caused by prolonged pressure on local tissues, leading to impaired blood circulation and subsequently tissue ischemia, hypoxia, and necrosis. Patients who are bedridden for extended periods, the elderly, patients with spinal cord injuries, and patients in the postoperative recovery period are at high risk for pressure ulcers. Pressure ulcers not only cause significant pain for patients but also increase the difficulty and cost of medical care. Therefore, preventing pressure ulcers is an important issue in the field of medical care. Currently, common pressure ulcer prevention devices on the market mainly include water-filled cushions, integral inflatable cushions, and static foam pads. These devices can relieve local pressure to some extent, but they still have the following problems.
[0003] Common pressure ulcer prevention pads include water-filled cushions, fully inflatable cushions, and static foam cushions. However, the pressure distribution of water-filled and fully inflatable cushions is relatively static and cannot be dynamically adjusted, which can easily lead to local pressure concentration and fail to achieve local pressure relief. This can easily cause discomfort and pressure ulcers, reducing the comfort of the cushion and failing to meet the working requirements of pressure ulcer prevention pads. Therefore, an alternating inflation pressure ulcer prevention pad is proposed. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides an alternating inflation anti-pressure sore pad, which solves the technical problem that the pressure distribution of water-filled cushions and overall inflatable cushions is relatively static and cannot be dynamically adjusted, easily leading to local pressure concentration and the inability to achieve local pressure relief.
[0006] Technical solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an alternately inflatable pressure ulcer prevention pad, comprising:
[0008] The bottom seat cushion has first airbags evenly installed on its upper surface, and second airbags installed on the upper surface of the bottom seat cushion between the first airbags. Inflation channels are connected between the first airbags and the second airbags.
[0009] An inflation main channel is installed at the air inlet at the outer end of the inflation channel, and an electric inflation pump is installed at the air outlet at the outer end of the inflation main channel.
[0010] A pad is installed on the left end of the bottom seat cushion. The top two sides of the pad are connected to a first elastic band. The outer end of the first elastic band is connected to a snap-fit block. Each snap-fit block has a clamping block inserted inside. Both sides of the snap-fit block and the clamping block have assembly holes. A pin is inserted into the assembly hole. The top of the pin is connected to a second elastic band. A columnar airbag is installed at the top of the second elastic band.
[0011] Preferably, the inner cavity of the inflation air passage is connected to the inner cavity of the first airbag and the second airbag, and the inner cavity of the main inflation channel is connected to the inner cavity of the inflation air passage, which facilitates inflation.
[0012] Preferably, the bottom of the bottom cushion is covered with a rubber pad, and the bottom of the rubber pad has anti-slip texture. The added rubber pad can improve the anti-slip performance of the bottom cushion after it is placed.
[0013] Preferably, the length of the columnar airbag is greater than the width of the bottom cushion, and a waterproof and stain-resistant coating is laid between the first airbags and on the outside of the second airbag, which facilitates cleaning and disinfection and extends service life.
[0014] Preferably, a rubber block is circumferentially installed inside the assembly hole, and the number of rubber blocks is 3-6 sets, with the outer ends of the clamping blocks all being arc-shaped.
[0015] Preferably, each clamping block has a spring connected to its inner end, and the number of springs is 2-4 sets. The inner ends of the springs are all connected to the corresponding positions of the inner cavities of the clamping blocks.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides an alternating inflation anti-pressure sore pad, which has the following beneficial effects:
[0018] This alternating inflation pressure ulcer pad features two independent sets of air bladders, a first air bladder and a second air bladder. The alternating inflation of the first air bladder and the second air bladder allows for dynamic adjustment of pressure distribution, preventing sustained pressure on specific areas and effectively preventing pressure ulcers. Simultaneously, by pressing the clamping block to align the mounting holes, the pin can be inserted into the locking block to complete the installation of the columnar air bladder. The added columnar air bladder supports the lower back, relieves lumbar spine pressure, improves posture, further optimizes pressure distribution, meets the comfort needs of different patients, and enhances the comfort and practicality of the pressure ulcer pad. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the second airbag and inflation airway structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the bottom seat cushion structure of this utility model from below;
[0022] Figure 4 This is a schematic diagram of the pad block structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the assembly structure of the snap-fit block and the pin of this utility model;
[0024] Figure 6 This is a cross-sectional view of the snap-fit block of this utility model.
[0025] In the diagram: 1. Bottom seat cushion; 2. First airbag; 3. Second airbag; 4. Inflation channel; 5. Main inflation channel; 6. Electric air pump; 7. Pad block; 71. First elastic band; 8. Rubber pad; 9. Clip block; 10. Pin; 11. Second elastic band; 12. Columnar airbag; 13. Clamping block; 14. Assembly hole; 15. Spring; 16. Rubber block. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] This utility model provides a technical solution: an alternately inflatable pressure ulcer prevention pad, comprising a bottom cushion 1, a first air bladder 2, a second air bladder 3, an inflation channel 4, an inflation main channel 5, an electric air pump 6, a pad block 7, a first elastic band 71, a rubber pad 8, a snap-fit block 9, a pin 10, a second elastic band 11, a cylindrical air bladder 12, a clamping block 13, an assembly hole 14, a spring 15, and a rubber block 16.
[0028] Please see Figure 1 The upper surface of the bottom seat cushion 1 is evenly equipped with first airbags 2, and the upper surface of the bottom seat cushion 1 is equipped with second airbags 3 located between the first airbags 2. Please refer to [link / reference]. Figure 2 An inflation channel 4 connects the first airbag 2 to the second airbag 3. Please refer to [link / reference]. Figure 3 The bottom of the bottom cushion 1 is covered with a rubber pad 8, and the bottom of the rubber pad 8 has anti-slip texture.
[0029] Please see Figure 2The main inflation channel 5 is installed at the air inlet at the outer end of the inflation channel 4. An electric air pump 6 is installed at the air outlet at the outer end of the main inflation channel 5. The surface of the electric air pump 6 is equipped with a switch with an indicator light, a gear adjustment knob, and a timer adjustment knob, which can adjust the inflation intensity and timed inflation time according to the usage requirements. The inner cavity of the inflation channel 4 is connected to the inner cavity of the first airbag 2 and the second airbag 3. The inner cavity of the main inflation channel 5 is connected to the inner cavity of the inflation channel 4.
[0030] Please see Figure 3 Pad 7 is installed on the left end of the bottom seat cushion 1. Please refer to [link / reference]. Figure 4 Both sides of the top of the pad 7 are connected to a first elastic band 71, and the outer end of the first elastic band 71 is connected to a snap-fit block 9. Please refer to [link / reference]. Figure 5 and Figure 6 Each snap-fit block 9 has a clamping block 13 inserted inside. Both snap-fit blocks 9 and clamping blocks 13 have mounting holes 14 on both sides. Pins 10 are inserted into the mounting holes 14, and the top of each pin 10 is connected to a second elastic band 11. A cylindrical airbag 12 is mounted on the top of the second elastic band 11. By adding two independent sets of airbags, the first airbag 2 and the second airbag 3, the pressure distribution can be dynamically adjusted through alternating inflation of the second airbag 3 and the first airbag 2, avoiding continuous local pressure and effectively preventing pressure sores. Simultaneously, by pressing the clamping block 13 to align the mounting holes 14, the pin 10 can be inserted into the snap-fit block 9, completing the mounting of the cylindrical airbag 12. The added columnar airbag 12 supports the waist, relieves lumbar pressure, improves sitting posture, further optimizes pressure distribution, meets the comfort needs of different patients, and improves the comfort and practicality of the anti-pressure sore cushion. The length of the columnar airbag 12 is greater than the width of the bottom cushion 1. Waterproof and stain-resistant coatings are laid between the first airbag 2 and on the outside of the second airbag 3. Rubber blocks 16 are installed circumferentially inside the mounting hole 14. There are 3-6 sets of rubber blocks 16. The outer ends of the clamping blocks 13 are all arc-shaped. The inner ends of the clamping blocks 13 are all connected to springs 15. There are 2-4 sets of springs 15. The inner ends of the springs 15 are all connected to the corresponding positions of the inner cavity of the snap-fit block 9.
[0031] This design incorporates two independent inflatable airbags, the first airbag 2 and the second airbag 3. By alternating the inflation of the second airbag 3 and the first airbag 2, the pressure distribution can be dynamically adjusted to avoid continuous local pressure and effectively prevent pressure sores. Simultaneously, by pressing the clamping block 13 to align the mounting hole 14, the pin 10 can be inserted into the snap-fit block 9 to complete the installation of the columnar airbag 12. The added columnar airbag 12 can support the waist, relieve lumbar spine pressure, improve sitting posture, further optimize pressure distribution, meet the comfort needs of different patients, and improve the comfort and practicality of the anti-pressure sore pad.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pressure ulcer prevention pad with alternating inflation, characterized in that, include: The bottom seat cushion (1) has a first airbag (2) evenly installed on its upper surface. The bottom seat cushion (1) has a second airbag (3) installed on its upper surface between the first airbags (2). An inflation channel (4) is connected between the first airbags (2) and the second airbag (3). The main inflation channel (5) is installed at the air inlet at the outer end of the inflation channel (4), and the air outlet at the outer end of the main inflation channel (5) is equipped with an electric inflation pump (6). A pad (7) is installed on the left end of the bottom cushion (1). The top two sides of the pad (7) are connected to a first elastic band (71). The outer end of the first elastic band (71) is connected to a snap-fit block (9). A clamping block (13) is inserted inside the snap-fit block (9). The snap-fit block (9) and the clamping block (13) are provided with assembly holes (14) on both sides. A pin (10) is inserted inside the assembly hole (14). The top end of the pin (10) is connected to a second elastic band (11). A columnar airbag (12) is installed at the top end of the second elastic band (11).
2. The pressure ulcer prevention pad with alternating inflation according to claim 1, characterized in that: The inner cavity of the inflation channel (4) is connected to the inner cavity of the first airbag (2) and the second airbag (3), and the inner cavity of the inflation main channel (5) is connected to the inner cavity of the inflation channel (4).
3. The pressure ulcer prevention pad with alternating inflation according to claim 1, characterized in that: The bottom of the bottom cushion (1) is covered with a rubber pad (8), and the bottom of the rubber pad (8) has anti-slip texture.
4. The pressure ulcer prevention pad with alternating inflation according to claim 1, characterized in that: The length of the columnar airbag (12) is greater than the width of the bottom cushion (1), and a waterproof and stain-resistant coating is laid between the first airbag (2) and on the outside of the second airbag (3).
5. The pressure ulcer prevention pad with alternating inflation according to claim 1, characterized in that: Rubber blocks (16) are installed circumferentially inside the assembly hole (14). The number of rubber blocks (16) is 3-6 sets, and the outer ends of the clamping blocks (13) are all arc-shaped.
6. The pressure ulcer prevention pad with alternating inflation according to claim 1, characterized in that: The inner ends of each clamping block (13) are connected to springs (15), and the number of springs (15) is 2-4 sets. The inner ends of each spring (15) are connected to the corresponding positions of the inner cavity of the snap-fit block (9).