Water pillow mattress for preventing pressure sores
By incorporating a breathable layer, a support layer, a waterproof layer, and intelligent control components into the mattress, the water volume and pressure within the water pillow are automatically adjusted according to the patient's weight and position. This solves the problems of existing mattresses being easily damaged and unable to provide personalized support, thereby improving patient comfort and treatment outcomes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE AFFILIATED SIR RUN RUN SHAW HOSPITAL OF SCHOOL OF MEDICINE ZHEJIANG UNIV
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-15
AI Technical Summary
Existing pressure ulcer prevention mattresses are prone to damage during use, cannot automatically adjust according to the patient's weight and position to provide personalized support, and cannot be set to different working modes according to the patient's condition and treatment needs, affecting comfort and treatment effectiveness.
Employing a breathable layer, support layer, waterproof layer, and intelligent control components, including a flexible piezoresistive sensor, electric valve, and silent water pump, it automatically adjusts the water volume and pressure within the water pillow by detecting the patient's weight and position, providing personalized support and protection.
It improves the stability and comfort of the mattress, and allows for adjustment of the water volume and pressure within the water pillow according to the patient's needs, providing personalized support and improving treatment effectiveness and management efficiency.
Smart Images

Figure CN224235680U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pressure ulcer prevention technology, specifically relating to a water pillow mattress for preventing pressure ulcers. Background Technology
[0002] For stroke, coma, paralysis, and post-operative patients, prolonged bed rest is necessary. However, prolonged bed rest can lead to continuous pressure on local tissues, causing persistent ischemia, hypoxia, malnutrition, and ultimately tissue necrosis. A search revealed application number "CN202220593591.8" disclosing "an anti-pressure ulcer mattress," which describes "an air pump mechanism inflating and deflating the air-filled mattress to transfer and change the pressure points on the patient's body while lying down, thereby avoiding prolonged pressure on any one area of the body. The inflatable mattress can effectively distribute body pressure and prevent pressure injuries." While it's true that inflatable mattresses can effectively distribute body pressure and prevent pressure injuries, the above-mentioned application has the following problems in practical use:
[0003] In actual use, the lack of protective functions makes the mattress prone to damage. It also cannot automatically adjust according to the patient's weight and position to provide personalized support and improve patient comfort. Furthermore, it cannot set different working modes according to the patient's condition and treatment needs to improve treatment effectiveness and management efficiency.
[0004] Therefore, mattresses that offer protective features, personalized support, and the ability to be configured with different working techniques are highly practical. Utility Model Content
[0005] The purpose of this invention is to provide a water pillow mattress for preventing pressure sores, thereby solving the aforementioned technical problems.
[0006] This utility model provides a water pillow mattress for preventing pressure sores, including a bed frame, protective components, and intelligent control components.
[0007] A mattress is movably connected to the top of the bed.
[0008] The protective component includes a breathable layer disposed on the outer wall of the mattress, the breathable layer being a bamboo fiber blended fabric; a support layer disposed inside the breathable layer, the support layer being made of carbon fiber reinforced silicone; a first waterproof layer disposed inside the support layer, the first waterproof layer being made of thermoplastic polyurethane; a second waterproof layer disposed inside the first waterproof layer, the second waterproof layer being made of polyvinyl chloride coated fabric; and a water pillow disposed inside the second waterproof layer, the water pillow having a baffle cotton inside.
[0009] The intelligent control component includes several flexible piezoresistive sensors mounted on the top of the mattress. One end of the water pillow is sealed and connected to several first electric valves. The ends of the several first electric valves are sealed and connected to connecting pipes. The bottoms of the several connecting pipes are sealed and connected to a recovery pipe. One side of the water pillow is sealed and connected to a connecting pipe. The bottoms of the several connecting pipes are sealed and connected to second electric valves. The bottoms of the several second electric valves are sealed and connected to a delivery pipe.
[0010] In one embodiment of this utility model, a water tank is provided at the bottom of the bed, a silent water pump is provided on one side of the water tank, and a suction pipe is sealed and connected to one side of the silent water pump, with the end of the suction pipe sealed and connected to one side of the water tank.
[0011] In one embodiment of this utility model, one end of the silent water pump is sealed and connected to an auxiliary pipe, and the end of the auxiliary pipe is threadedly connected to a connector, the top of which is sealed and connected to the delivery pipe.
[0012] In one embodiment of this utility model, one end of the water tank is sealed and connected to a return pipe, and the end of the return pipe is threadedly connected to an auxiliary head, the top of which is sealed and connected to the recovery pipe.
[0013] In one embodiment of this utility model, the outer walls of several first electric valves and connecting pipes are interwoven with the breathable layer, the support layer, the first waterproof layer, and the second waterproof layer.
[0014] In one embodiment of this utility model, the water pillow is divided into three chambers: head, waist, and legs. One end of the water tank is sealed and connected to a one-way valve, and a controller is provided at one corner of the water tank.
[0015] In one embodiment of this utility model, the flexible piezoresistive sensor, the first electric valve, the second electric valve, and the silent water pump are all electrically connected to the controller, and the controller is electrically connected to an external power supply.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1) The breathable layer allows users to utilize the breathability of the bamboo fiber blend fabric, making the mattress more comfortable. The support layer, made of carbon fiber reinforced silicone, makes the mattress more sturdy and durable, preventing tearing and damage and improving stability. The first waterproof layer works in conjunction with the second waterproof layer, allowing the thermoplastic polyurethane and polyvinyl chloride coated fabric to work together to achieve double waterproofing. The baffle cotton cushions water as it flows through the water pillow, preventing excessive pressure and violent shaking, thus achieving the purpose of protection.
[0018] 2) The flexible piezoresistive sensor allows users to easily activate it via the controller. When the patient is lying on the mattress, the sensor detects the pressure, integrates the total pressure, and calculates the patient's weight based on gravitational acceleration. Multiple flexible piezoresistive sensors can also detect the patient's position and feed this information back to the controller. The controller then adjusts the water level based on the patient's weight and position. When water needs to be added, the controller activates a silent water pump to draw water from the tank through a suction pipe and deliver it to the connector via an auxiliary pipe. The connector then delivers the water to the delivery pipe. At this point, the user opens the second electric valve via the controller to allow water to enter the water pillow. After adding water, the second electric valve is closed. Conversely, when draining water, the controller opens the first electric valve to deliver water from the water pillow through the connector and recovery pipe to the auxiliary head, which then delivers it to the return pipe before finally returning it to the tank. The water volume and pressure in the water pillow can be adjusted according to the patient's weight and position for greater comfort.
[0019] 3) When operating in other modes, such as when it is necessary to increase the support strength for the patient's lower back, water enters the delivery pipe. The user closes two of the second electric valves, leaving only the middle second electric valve open. This allows water to enter the central cavity of the water pillow only through the middle second electric valve. It should be noted that "the water pillow has three cavities from one side to the other: head, waist, and legs. Multiple first and second electric valves correspond to these cavities to achieve the purpose of water intake and drainage." This provides support for the patient's lower back. The other two cavities are treated similarly. This allows the water pillow to automatically adjust according to the patient's weight and position, providing personalized support, improving patient comfort and satisfaction. Different operating modes can be set according to the patient's condition and treatment needs, thereby improving treatment effectiveness and management efficiency. Attached Figure Description
[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the top structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the bottom structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the layered structure of the mattress of this utility model.
[0025] In the diagram: 100, Bed frame; 110, Mattress; 200, Protective components; 210, Breathable layer; 220, Support layer; 230, First waterproof layer; 240, Second waterproof layer; 250, Water pillow; 300, Intelligent control components; 310, Flexible piezoresistive sensor; 320, First electric valve; 330, Connecting pipe; 340, Recycling pipe; 350, Connecting pipe; 360, Second electric valve; 370, Delivery pipe; 400, Water tank; 500, Silent water pump; 600, Suction pipe; 700, Auxiliary pipe; 800, Connector; 900, Return pipe; 1000, Auxiliary head; 1100, One-way valve. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example
[0027] Please see Figure 1-4 A pressure ulcer prevention water pillow mattress includes a bed frame 100, a protective component 200, and a smart control component 300.
[0028] Please refer to the details. Figure 1 A mattress 110 is movably connected to the top of the bed frame 100.
[0029] Please see Figure 4The protective component 200 includes a breathable layer 210 disposed on the outer wall of the mattress 110. The breathable layer 210 is made of bamboo fiber blended fabric. Inside the breathable layer 210, there is a support layer 220 made of carbon fiber reinforced silicone. Inside the support layer 220, there is a first waterproof layer 230 made of thermoplastic polyurethane. Inside the first waterproof layer 230, there is a second waterproof layer 240 made of polyvinyl chloride coated fabric. Inside the second waterproof layer 240, there is a water pillow 250. Inside the water pillow 250, there is a partition cotton.
[0030] In one specific embodiment, the breathable layer 210 allows users to utilize the breathability of the bamboo fiber blend fabric, enhancing patient comfort. The support layer 220, made of carbon fiber reinforced silicone, makes the mattress 110 more robust and durable, preventing tearing and improving stability. The first waterproof layer 230 works in conjunction with the second waterproof layer 240, combining thermoplastic polyurethane and polyvinyl chloride coated fabric for double waterproofing. The baffle cotton cushions water as it flows within the water pillow 250, preventing excessive pressure and impact, thus providing protection. The water pillow 250 also evenly distributes the patient's weight, reducing pressure on local tissues and effectively preventing pressure sores. For patients with existing pressure sores, it provides a soft and comfortable support environment, promoting healing.
[0031] Please see Figure 1-3 The intelligent control component 300 includes several flexible piezoresistive sensors 310 disposed on the top of the mattress 110; several first electric valves 320 are sealed and connected to one end of the water pillow 250; connecting pipes 330 are sealed and connected to the ends of the several first electric valves 320; recycling pipes 340 are sealed and connected to the bottom of the several connecting pipes 330; connecting pipes 350 are sealed and connected to one side of the water pillow 250; second electric valves 360 are sealed and connected to the bottom of the several connecting pipes 350; and conveying pipes 370 are sealed and connected to the bottom of the several second electric valves 360.
[0032] In one specific embodiment, a flexible piezoresistive sensor 310 is provided, which can be easily activated by the user via a controller. When the patient is lying on the mattress 110, the flexible piezoresistive sensor 310 can detect the pressure applied, integrate the total pressure, and calculate the patient's weight by combining the total pressure with gravitational acceleration. Furthermore, multiple flexible piezoresistive sensors 310 can detect the patient's position and feed this information back to the controller. The controller will then adjust the settings based on the patient's weight and position, and activate the sensor when water needs to be added. The silent water pump 500 draws water from the water tank 400 through the suction pipe 600 and sends it to the connector 800 through the auxiliary pipe 700. The connector 800 then sends the water to the delivery pipe 370. At this time, the user opens the second electric valve 360 through the controller, allowing water to enter the water conservancy tank 250 for filling. After filling, the second electric valve 360 is closed. Conversely, when draining water, the first electric valve 320 is opened through the controller, allowing water in the water conservancy tank 250 to flow through the connecting pipe 330 and the recovery pipe 34. Water is fed into the auxiliary head 1000 and then into the return pipe 900, finally entering the water tank 400. The water volume and pressure in the water pillow 250 can be adjusted according to the patient's weight and position to make the patient more comfortable. In other working modes, such as when it is necessary to increase the support strength for the patient's waist, water enters the delivery pipe 370. The user closes two of the second electric valves 360, leaving only the middle second electric valve 360 open, so that water can only enter the middle cavity of the water pillow 250 through the middle second electric valve 360. It should be noted that "the water pillow 250 has three cavities from one side to the other, namely the head, waist and leg cavities, and multiple first electric valves 320 and second electric valves 360 correspond to them to achieve the purpose of water intake and drainage." This provides support for the patient's waist, and the other two cavities are the same. Thus, the water pillow 250 can automatically adjust according to the patient's weight and position to provide personalized support, improve the patient's comfort and satisfaction, and set different working modes according to the patient's condition and treatment needs to improve the treatment effect and management efficiency.
[0033] Please see Figure 3 The bottom of the bed 100 is provided with a water tank 400. A silent water pump 500 is provided on one side of the water tank 400. A suction pipe 600 is sealed and connected to one side of the silent water pump 500. The end of the suction pipe 600 is sealed and connected to one side of the water tank 400.
[0034] In one specific embodiment, the presence of a silent water pump 500 allows for quiet operation, ensuring that the pump does not disturb the patient and preventing sleep disturbances.
[0035] Please see Figure 3One end of the silent water pump 500 is sealed and connected to an auxiliary pipe 700. The end of the auxiliary pipe 700 is threadedly connected to a connector 800. The top of the connector 800 is sealed and connected to the delivery pipe 370.
[0036] In one specific embodiment, the connector 800 facilitates connection to the auxiliary tube 700 during use, and can also be separated from the connector 800 for transportation, thus improving work efficiency.
[0037] Please see Figure 3 One end of the water tank 400 is sealed and connected to the return pipe 900. The end of the return pipe 900 is threadedly connected to the auxiliary head 1000. The top of the auxiliary head 1000 is sealed and connected to the recovery pipe 340.
[0038] In one specific embodiment, the water in the water pillow 250 can be easily circulated into the water tank 400 through the return pipe 900, so as to adjust the water volume and water pressure in the water pillow 250.
[0039] Please see Figure 1-4 The outer walls of several first electric valves 320 and connecting pipes 350 are interwoven with the breathable layer 210, the support layer 220, the first waterproof layer 230 and the second waterproof layer 240.
[0040] In one specific embodiment, the first waterproof layer 230 is provided to facilitate cooperation with the second waterproof layer 240, thereby preventing water from draining out of the water cushion 250 and causing leakage.
[0041] Please see Figure 4 The water pillow 250 is divided into three chambers: head, waist and legs. One end of the water tank 400 is sealed and connected to a one-way valve 1100. A controller is set at one corner of the water tank 400.
[0042] In one specific embodiment, the water pillow 250 is divided into three chambers: head, waist, and legs. This allows the user to easily add water to the water pillow 250 using multiple second electric valves 360 that match the head, waist, and leg chambers, and to drain water using the first electric valve 320. Water can be added to or drained from any of the three chambers as needed. For example, when it is necessary to increase the support strength of the waist, more water can be added to the waist chamber and less water to the other two chambers to support the patient's waist, so that they can work together to make the patient more comfortable.
[0043] Please see Figure 1-4 The flexible piezoresistive sensor 310, the first electric valve 320, the second electric valve 360, and the silent water pump 500 are all electrically connected to the controller, which is electrically connected to an external power supply.
[0044] In one specific embodiment, a controller is provided to facilitate power supply control of electrical equipment, enabling the equipment to be powered on when needed, thus avoiding situations where power cannot be supplied when power is required.
[0045] In use, the breathable layer 210 allows users to utilize the breathability of the bamboo fiber blend fabric, making the patient more comfortable. The support layer 220, made of carbon fiber reinforced silicone, makes the mattress 110 more sturdy and durable, preventing tearing and damage and improving stability. The first waterproof layer 230 works in conjunction with the second waterproof layer 240, and the thermoplastic polyurethane and polyvinyl chloride coated fabric work together to achieve double waterproofing. The baffle cotton cushions water as it flows through the water pillow 250, preventing excessive pressure and violent shaking, thus achieving the purpose of protection. The water pillow 250 can also evenly distribute the patient's weight, reducing pressure on local tissues and effectively preventing pressure sores.For patients with existing pressure ulcers, a soft and comfortable supportive environment is provided to promote healing. A flexible piezoresistive sensor 310 is included, which can be easily activated via a controller. When the patient lies on the mattress 110, the sensor detects the pressure applied, integrates the total pressure, and calculates the patient's weight by combining this with gravitational acceleration. Multiple flexible piezoresistive sensors 310 can also detect the patient's position and feed this information back to the controller, which will then adjust the sensor based on the patient's weight. The system is controlled by the user's posture. When water needs to be added, the controller activates the silent water pump 500 to draw water from the water tank 400 through the suction pipe 600 and send it to the connector 800 through the auxiliary pipe 700. The connector 800 then sends the water to the delivery pipe 370. At this time, the user opens the second electric valve 360 through the controller, allowing water to enter the water conservancy tank 250. After adding water, the second electric valve 360 is closed. Conversely, when draining water, the controller opens the first electric valve 320, allowing water to flow from the water conservancy tank 250. Water is fed into the auxiliary head 1000 through the connecting pipe 330 and the recovery pipe 340, and then into the return pipe 900 through the auxiliary head 1000, finally entering the water tank 400. The water volume and pressure in the water pillow 250 can be adjusted according to the patient's weight and position to make the patient more comfortable. Finally, when performing other working modes, such as when it is necessary to increase the patient's lumbar support, water enters the delivery pipe 370. The user closes two of the second electric valves 360, leaving only the middle second electric valve 360 open, so that water can only enter through the middle second electric valve 360. The central cavity of the water pillow 250 is divided into three chambers: one for the head, one for the waist, and one for the legs. Multiple first electric valves 320 and second electric valves 360 correspond to these chambers to facilitate water inflow and outflow. This provides support for the patient's lower back, and the other two chambers are similarly designed. This allows the water pillow 250 to automatically adjust according to the patient's weight and position, providing personalized support, improving patient comfort and satisfaction. Different operating modes can be set according to the patient's condition and treatment needs, thereby improving treatment effectiveness and management efficiency.
[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A water pillow mattress for preventing pressure sores, characterized in that, include: A bed frame (100) with a mattress (110) movably connected to its top. The protective component (200) includes a breathable layer (210) disposed on the outer wall of the mattress (110), the breathable layer (210) being a bamboo fiber blended fabric, a support layer (220) disposed inside the breathable layer (210), the support layer (220) being made of carbon fiber reinforced silicone, a first waterproof layer (230) disposed inside the support layer (220), the first waterproof layer (230) being made of thermoplastic polyurethane, a second waterproof layer (240) disposed inside the first waterproof layer (230), the second waterproof layer (240) being made of polyvinyl chloride coated fabric, a water pillow (250) disposed inside the second waterproof layer (240), and a partition cotton disposed inside the water pillow (250). The intelligent control component (300) includes several flexible piezoresistive sensors (310) disposed on the top of the mattress (110), one end of the water pillow (250) is sealed and connected to several first electric valves (320), the ends of several first electric valves (320) are sealed and connected to connecting pipes (330), the bottom of several connecting pipes (330) is sealed and connected to a recovery pipe (340), one side of the water pillow (250) is sealed and connected to a connecting pipe (350), the bottom of several connecting pipes (350) is sealed and connected to a second electric valve (360), and the bottom of several second electric valves (360) is sealed and connected to a delivery pipe (370).
2. The pressure ulcer prevention water pillow mattress according to claim 1, characterized in that: The bottom of the bed (100) is provided with a water tank (400), and a silent water pump (500) is provided on one side of the water tank (400). A suction pipe (600) is sealed and connected to one side of the silent water pump (500), and the end of the suction pipe (600) is sealed and connected to one side of the water tank (400).
3. The pressure ulcer prevention water pillow mattress according to claim 2, characterized in that: One end of the silent water pump (500) is sealed and connected to an auxiliary pipe (700), and the end of the auxiliary pipe (700) is threadedly connected to a connector (800). The top of the connector (800) is sealed and connected to the delivery pipe (370).
4. The pressure ulcer prevention water pillow mattress according to claim 2, characterized in that: One end of the water tank (400) is sealed and connected to a return pipe (900), and the end of the return pipe (900) is threadedly connected to an auxiliary head (1000). The top of the auxiliary head (1000) is sealed and connected to the recovery pipe (340).
5. The pressure ulcer prevention water pillow mattress according to claim 1, characterized in that: The outer walls of several of the first electric valves (320) and connecting pipes (350) are interwoven with the breathable layer (210), the support layer (220), the first waterproof layer (230) and the second waterproof layer (240).
6. The pressure ulcer prevention water pillow mattress according to claim 4, characterized in that: The water pillow (250) is divided into three chambers: head, waist and legs. One end of the water tank (400) is sealed and connected to a one-way valve (1100). A controller is provided at one corner of the water tank (400).
7. A pressure ulcer prevention water pillow mattress according to claim 6, characterized in that: The flexible piezoresistive sensor (310), the first electric valve (320), the second electric valve (360), and the silent water pump (500) are all electrically connected to the controller, which is electrically connected to an external power supply.