Anti-bedsore device, using method and bed

Abstract

The invention discloses an anti-bedsore device, a using method and a bed, and relates to the technical field of preventive nursing devices.The anti-bedsore device comprises a mounting carrier, a driving assembly and an air bag assembly, the mounting carrier is provided with a bearing face with a through hole, and the driving assembly can move in the mounting carrier in the horizontal direction or the horizontal plane; the air bag assembly is arranged on the driving assembly and comprises an air bag structure, and at least part of the air bag structure can stretch out of the through hole to act on the human body target part. The driving assembly can drive the air bag assembly to move in the installation carrier in the horizontal direction or the horizontal plane and align at the core pressed area of the human body, the air bag assembly is matched with the through hole design, the supporting effect on the target part of the human body is achieved, it is ensured that the air bag assembly can accurately move to the target through hole position, and the pressure reduction pertinence is improved. The bedsore prevention device is used in the using method. The bed provided by the invention comprises the anti-bedsore device.

Description

Technical Field

[0001] This application relates to the field of preventive care devices, and in particular to an anti-bedsore device and its method of use. Background Technology

[0002] Pressure ulcers (pressure injuries) are a common complication in patients who are bedridden for extended periods. They are primarily caused by prolonged pressure on local tissues, leading to ischemia and necrosis due to impaired blood circulation. Traditional pressure ulcer prevention devices include static support devices and dynamic adjustment devices. Static support devices are represented by static sponges and gel pads, while dynamic adjustment devices are represented by air mattresses. Traditional air mattresses often employ a single-zone inflation / deflation pattern or a simple dual-zone alternating support mode. On the one hand, this single support mode fails to completely relieve local pressure, leaving some areas under constant pressure. On the other hand, the drive mechanism is mostly overall lifting and lowering, lacking precise local position adjustment capabilities and making it difficult to adapt to the physiological structures of patients with different body types. Some devices also exhibit high operating noise and slow adjustment response, affecting patient rest and the nursing experience. Summary of the Invention

[0003] To solve at least one of the above-mentioned technical problems, this application provides an anti-bedsore device and a method of use, and the technical solution adopted is as follows.

[0004] The anti-bedsore device provided in this application includes:

[0005] The mounting carrier has a accommodating space and a bearing surface with through holes; The driving component, disposed within the accommodating space inside the mounting carrier, is capable of moving within the mounting carrier in a horizontal direction or on a horizontal plane; An airbag assembly is disposed on a drive assembly. The airbag assembly includes multiple airbag structures. The drive assembly is used to drive at least one airbag structure to move in a horizontal direction or on a horizontal plane. At least a portion of the airbag structure can extend out of the through hole to act on a target part of the human body.

[0006] In some embodiments of this application, the drive component is movable within the mounting carrier along the length and width directions of the mounting carrier.

[0007] In some embodiments of this application, the airbag structure includes an air storage cavity and a flexible airbag top. The air storage cavity is a rigid structure used to contain gas. The air storage cavity is provided with an inlet and an outlet. The top of the air storage cavity is provided with an opening, and the airbag top seals and covers the opening.

[0008] In some embodiments of this application, the airbag structure includes an air tube disposed on the inner sidewall of the mounting carrier, and the air tube is connected to the air inlet and outlet of the air storage cavity.

[0009] In some embodiments of this application, the anti-bedsore device further includes a compressor, a controller, and a solenoid valve. The compressor is connected to the solenoid valve, and the solenoid valve is connected to the air tube. The solenoid valve also has an exhaust end. The controller is electrically connected to the compressor and the solenoid valve. The solenoid valve is used to switch the air intake state, the closed state, and the exhaust state of the air storage chamber.

[0010] In some embodiments of this application, the airbag assembly includes multiple sets of the airbag structures, the compressor is connected to multiple sets of the solenoid valves, and each solenoid valve is respectively connected to each of the air storage chambers; the controller can independently switch the air intake state, closed state and exhaust state of the multiple sets of airbag structures through the solenoid valves.

[0011] In some embodiments of this application, pressure sensors are provided inside the trachea, inside the air storage cavity, and on top of the airbag, and each pressure sensor is electrically connected to the controller.

[0012] This application also provides a method of using an anti-bedsore device, including the following steps: Prepare the aforementioned anti-bedsore device; The controller controls the compressor and the solenoid valve to supply air to the airbag structure, and calibrates the correspondence between air pressure and the moving distance of the top of the airbag; Retrieve the corresponding coordinate set of the core pressure area of ​​the human body from the pre-stored ergonomics database; Move the drive component to the position corresponding to the coordinates of the core pressure area, so that the airbag structure reaches the preset detection air pressure, and record the airbag top pressure value corresponding to the core pressure area; Based on the pressure value at the top of the airbag corresponding to the core pressure area, the target part of the human body to be acted upon is determined; The drive assembly and the airbag assembly are activated, causing at least a portion of the airbag structure to extend out of the through-hole.

[0013] In some embodiments of this application, when the drive assembly and the airbag assembly are started to work, the controller controls the compressor and the solenoid valve to independently group and deliver air to multiple groups of the airbag structures. After at least one set of the airbag structures is inflated, the solenoid valve connected to it switches to a closed state to maintain its preset air pressure, so as to keep the top of the airbag continuously in contact with the target part of the human body. At least one set of the airbag structures alternately switches the air intake and exhaust states of the solenoid valve to achieve cyclic inflation and deflation.

[0014] This application also provides a bed including the anti-bedsore device as described above.

[0015] This application has at least the following beneficial effects: The mounting carrier of this application provides a foundation for installing other components. The drive component can move the airbag component horizontally or on a horizontal plane within the mounting carrier, adapting to the pressure point and aligning it with the core pressure area of ​​the human body. The drive component and airbag component are concealed within the mounting carrier, with a lightweight overall design that does not occupy additional space. It can move horizontally or on a horizontal plane within the mounting carrier, resulting in a simple overall structure. The airbag component features a through-hole design, providing support to the target area of ​​the human body and ensuring that the airbag component can move precisely to the target through-hole position, improving the targeted decompression.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0018] Figure 1 This is a schematic diagram of an anti-bedsore device in one embodiment of this application; Figure 2 This is a schematic diagram of the drive assembly and airbag assembly in one embodiment of this application.

[0019] Reference numerals: Mounting carrier 100; Mounting base 110; Cover plate 120; Through hole 121; Drive assembly 200; guide structure 210; mounting bracket 211; drive structure 220; Airbag assembly 300; airbag structure 310; airbag top 311; air storage cavity 312. Detailed Implementation

[0020] The following is combined Figures 1 to 2 The embodiments of this application are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Combination Figure 1 , Figure 2 As shown, the anti-bedsore device provided in this application includes: Mounting carrier 100 has a bearing surface with through holes; The drive component 200 is disposed inside the mounting carrier 100 and is capable of moving within the mounting carrier 100 in a horizontal direction or on a horizontal plane. An airbag assembly 300 is disposed on a drive assembly 200. The airbag assembly 300 includes a plurality of airbag structures 310. The drive assembly 200 is used to drive at least one airbag structure 310 to move in a horizontal direction or on a horizontal plane. At least a portion of the airbag structure 310 can extend out of a through hole 121 to act on a target part of the human body.

[0026] The mounting carrier 100 includes a mounting base 110 and a cover plate 120. The mounting base 110 has a groove structure, which serves as an accommodating space for accommodating the drive assembly 200 and the airbag assembly 300. The cover plate 120 has through holes 121, and its bearing surface is the side that contacts the target part of the human body. The top of the cover plate 120 forms a flat bearing surface, which is a continuous panel structure with an array of through holes 121. The mounting base 110 and the cover plate 120 are two independent components, and the cover plate 120 can be closed onto the mounting base 110. The drive assembly 200 is disposed within the mounting base 110 and can move within a plane within the mounting carrier 100. Specifically, the drive assembly 200 can move relative to the mounting base 110 in two directions.

[0027] The airbag assembly 300 is disposed on the moving structure of the drive assembly 200. The airbag structure 310 can be aligned with the moving structure of the drive assembly 200 to the lower part of the through hole 121. The airbag structure 310 can extend from the lower part of the through hole 121 toward the through hole 121. At least a part of the airbag structure 310 can extend out of the through hole 121 and can reciprocate in a direction perpendicular to the bearing surface to act on the target part of the human body.

[0028] Understandably, multiple sets of drive components can be set on the mounting base 110, with each drive component driving at least one airbag structure to provide multi-point support for the target parts of the human body.

[0029] The distribution range of the through holes 121 covers the areas that may be under pressure when the human body is lying down, i.e. the target parts of the human body, to ensure that the airbag structure 310 can be accurately aligned with the target position and extend; the interior of the mounting carrier 100 has a reserved closed receiving space, the size of which is adapted to the overall volume of the drive component 200 and the airbag component 300, for concealed installation of the drive component 200 and the airbag component 300, to avoid the components being exposed and affecting use or causing bumps.

[0030] The target body parts are the core pressure-bearing areas where bedridden patients are prone to bedsores, including the sacrum, hip, scapula, and heel. The drive component 200 can drive the airbag component 300 to move precisely below the through hole 121 corresponding to these target body parts. Then, through the movement of the movable end of the airbag structure 310, part of the structure extends out of the through hole and acts on the target body part to achieve precise decompression.

[0031] The mounting carrier 100 of this application provides a foundation for installing other components. The drive component 200 can move the airbag component 300 within the mounting carrier 100 in a horizontal direction or on a horizontal plane, adapting to pressure points and aligning with the core pressure areas of the human body. The drive component 200 and the airbag component 300 are concealed within the mounting carrier, featuring a lightweight overall design that does not occupy additional space. They can move horizontally or on a horizontal plane within the mounting carrier 100, resulting in a simple overall structure. The airbag component 300 is fitted with a through-hole 121 design, providing support to the target body part and ensuring that the airbag component 300 can move precisely to the target through-hole position, improving pressure relief targeting and significantly enhancing the prevention of bedsores.

[0032] The airbag in this application can also be used to contain other fluids, such as liquids.

[0033] Specifically, the drive component 200 is capable of moving within the mounting carrier 100 along both the length and width directions of the mounting carrier 100. Figure 2 As shown, the length direction of the mounting carrier 100 is the x-direction, and the width direction is the y-direction. The length direction of the mounting carrier 100 is consistent with the length direction of the human torso when lying down, and the width direction is consistent with the left and right limbs of the human body. The drive component 200 has a structure that can move in both directions, and works together to achieve two-dimensional movement, ensuring that the airbag component 300 can reach the position corresponding to the through hole 121 inside the mounting carrier 100.

[0034] In some embodiments, the drive assembly 200 includes a guide structure 210 arranged along the length direction of the mounting carrier 100 and a drive structure 220 arranged along the width direction of the mounting carrier 100. Two parallel guide rails are provided on the bottom or side wall of the mounting base 110, extending along the length direction of the mounting base 110. A mounting bracket 211 is slidably connected to the two guide rails. The mounting bracket 211 is a structure extending along the width direction of the mounting carrier 100. Slider blocks adapted to the guide rails are correspondingly provided at both ends of the mounting bracket. The sliders engage with the guide rails, allowing the mounting bracket to move smoothly in a straight line along the guide rails without jamming or offset. The movement of the mounting bracket 211 along the guide rail can be achieved by driving a corresponding drive motor. The drive motor can be a stepper motor, a brushless DC motor, or a linear motor. When a stepper motor is selected, power is transmitted to the mounting bracket 211 through gear transmission or synchronous belt transmission to achieve precise distance movement. When a brushless DC motor is selected, the smoothness of movement and the quietness are improved. When a linear motor is selected, it can be directly linked with the mounting bracket 211, reducing mechanical transmission parts and improving response speed.

[0035] A drive structure 220 is mounted on the side of the mounting bracket 211 away from the guide rail. The drive structure 220 includes a ball screw transmission mechanism, wherein the screw is mounted on the mounting bracket 211 and is arranged along the width direction of the mounting carrier 100. The ball screw transmission mechanism is equipped with another drive motor, which can be a stepper motor or a servo motor. The motor is fixedly mounted on one side of the mounting bracket 211 and is connected to the screw drive.

[0036] The airbag assembly 300 is slidably connected to the ball screw transmission mechanism via a slider. When the drive motor on the mounting bracket 211 is started, it drives the ball screw to rotate. The rotational motion is converted into linear motion through the cooperation of the ball screw and the slider, thereby driving the airbag assembly 300 to move along the width direction of the mounting carrier. With the cooperation of the mounting bracket to move along the length direction of the guide rail, the airbag assembly can finally move along the horizontal direction or the horizontal plane.

[0037] Two parallel guide rails are used as the guiding structure 210, which, together with the slider connection of the mounting bracket, significantly improve the stability of the mounting bracket 211's movement along its length, preventing deviation and swaying. This provides a foundation for the precise positioning of the airbag assembly 300 and meets the core requirement of decompression. The mounting bracket 211 is driven along its length by a motor in conjunction with the guide rails, while the airbag assembly is driven by a motor-driven lead screw along its width. This bidirectional drive is efficient, achieving both smooth movement and ensuring accuracy, thus meeting the precise movement requirements of the airbag assembly 300 within the mounting carrier 100 corresponding to the target body part.

[0038] Understandably, multiple sets of guide rails can be arranged, and multiple sets of drive components 200 can drive the connected airbag structure 310 respectively to achieve multi-point support.

[0039] In some embodiments, the airbag structure 310 includes an air storage cavity 312 and a flexible airbag top 311. The air storage cavity 312 is a rigid structure used to contain gas. The air storage cavity 312 is provided with an inlet and an outlet, and an opening is provided at the top of the air storage cavity 312. The airbag top 311 seals and covers the opening. Specifically, the air storage cavity 312 is a rigid cylindrical structure, and the airbag top 311 is a silicone structure, which seals the opening at the top of the air storage cavity 312.

[0040] Specifically, the air storage chamber 312 is made of PC polycarbonate conforming to GB / T11547-2020 standard and is injection molded into a cylindrical structure. The airbag top 311 is made of medical-grade silicone with a Shore hardness of 28°±2° conforming to GB16174-2015 standard, molded into an arc shape. After applying medical-grade epoxy adhesive to the bottom, it is aligned and bonded to the opening of the air storage chamber 312. After alignment and bonding, it is cured at room temperature (25°C) for 24 hours. After curing, a sealing test is performed. It can be used only if there is no pressure drop after being inflated to 0.5MPa and held at pressure for 1 hour.

[0041] The structure of the air storage cavity 312 and the flexible airbag top 311 ensures the rigid guidance and flexible comfort of the airbag structure 310; the opening and air inlet / outlet of the air storage cavity have a clear division of labor, and with the cooperation of sealing and bonding and testing processes, the degree of lifting offset is low and the sealing performance is good.

[0042] In some embodiments, the airbag assembly 300 includes an air tube disposed on the inner sidewall of the mounting carrier 100 and connected to the inlet and outlet of the air storage cavity 312. The air tube is flexible. The air tube disposed on the inner sidewall of the mounting carrier 100 forms a pneumatic pipeline to avoid interference with the drive assembly 200; one end of the air tube is connected to the inlet and outlet of the air storage cavity 312 via a thread or sealing joint, and the connection is sealed to prevent air leakage. One end of the air tube is connected to the air storage cavity 312, and the other end is connected to the air supply end. The flexible air tube ensures that the air path does not detach or leak during movement.

[0043] In some embodiments, the anti-bedsore device further includes a compressor, a controller, and a solenoid valve (not shown in the figure). The solenoid valve has at least three connection ends. The compressor is connected to the solenoid valve, the solenoid valve is connected to the air pipe, and the solenoid valve also has an exhaust end. The controller is electrically connected to the compressor and the solenoid valve. The solenoid valve is used to switch the air intake state, closed state, and exhaust state of the air storage chamber 312. The compressor provides an air source for inflating the airbag structure 310, and its output end is connected to the air intake end of the solenoid valve. The exhaust end of the solenoid valve is connected to the end of the air pipe away from the air storage chamber 312 to realize gas transmission. The exhaust end of the solenoid valve is used to discharge the gas in the air storage chamber. The controller is a PLC controller. The controller is electrically connected to the compressor and the solenoid valve and is used to control the start and stop of the compressor and the state switching of the solenoid valve, thereby realizing the switching of the air intake, closed, and exhaust states of the air storage chamber 312.

[0044] When the gas storage chamber 312 is in the intake state, the controller controls the solenoid valve to open one end of the gas pipe connected to the gas storage chamber 312, opening the end connected to the compressor and starting the compressor; when the gas storage chamber 312 is in the closed state, the controller shuts off the compressor, closes the solenoid valve connected to the compressor, and closes the solenoid valve connected to the gas pipe connected to the gas storage chamber 312; when the gas storage chamber 312 is in the exhaust state, the controller shuts off the compressor, closes the solenoid valve connected to the compressor, opens the exhaust end, and opens the solenoid valve connected to the gas pipe connected to the gas storage chamber 312.

[0045] In some embodiments, the airbag assembly includes multiple airbag structures, and the compressor is connected to multiple sets of solenoid valves, each of which is correspondingly connected to a gas storage chamber 312. The controller can independently switch the air intake, closed, and exhaust states of the multiple airbag structures via the solenoid valves. All solenoid valves are three-way solenoid valves, and the compressor is connected to multiple sets of three-way solenoid valves. One set of airbag structures includes multiple airbag structures, and one three-way solenoid valve corresponds to one set of airbag structures 310. The three-way solenoid valves are connected to branch air pipes via the main air pipe to supply air to each airbag structure in the same set. The controller can independently control the state of each solenoid valve to switch the air intake, closed, and exhaust states of each set of airbag structures, achieving independent group control of the multiple airbag structures.

[0046] In some embodiments, pressure sensors are installed inside the trachea, the air storage cavity, and the top of the airbag, and each pressure sensor is electrically connected to the controller. Air pressure sensors are installed inside the trachea and the air storage cavity 312, and a pressure sensor is installed at the position where the airbag top 311 contacts the human body. Each pressure sensor is electrically connected to the controller. When the bearing surface contacts the human body, based on the recorded pressure value from the pressure sensors on the airbag top 311, and combined with the data from the air pressure sensors, the movement distance of the airbag top 311 is recorded at preset air pressure intervals, establishing a correspondence and storing it in the controller.

[0047] This application also provides a method of using an anti-bedsore device, including the following steps: Prepare bedsore prevention devices; The controller controls the compressor and solenoid valve to supply air to the airbag structure, and calibrates the correspondence between air pressure and the movement distance of the airbag top. Retrieve the corresponding coordinate set of the core pressure area of ​​the human body from the pre-stored ergonomics database; Move the drive component to the position corresponding to the coordinates of the core pressure area, so that the airbag structure reaches the preset detection air pressure, and record the airbag top pressure value corresponding to the core pressure area; Based on the pressure value at the top of the airbag corresponding to the core pressure area, determine the target part of the human body that needs to be acted upon; The drive assembly and airbag assembly are activated, causing at least a portion of the airbag structure to extend out of the through-hole.

[0048] Prepare the anti-bedsore device and check the connection stability of the mounting base 110 and cover plate 120 of the mounting carrier 100, whether the movement of the drive component 200 is obstructed, the airtightness of the airbag structure 310 of the airbag component 300, and the connection status of components such as air tubes and solenoid valves, to ensure that there is no looseness or damage.

[0049] When the bearing surface comes into contact with the human body, the target area of ​​the human body to be acted upon is determined based on the recorded pressure value of the pressure sensor 311 on the top of the airbag. Alternatively, caregivers can input basic patient information, such as height and weight, via a touchscreen. The system's built-in algorithm retrieves the corresponding core pressure area coordinate set from a pre-stored ergonomic database based on these parameters. This typically includes the center coordinate range of areas such as the sacrum, coccyx, left and right buttocks, and scapula, and records the corresponding coordinates to the controller.

[0050] The controller controls the compressor and solenoid valve to supply air to the airbag structure 310. Combined with the data from the air pressure sensor, the movement distance of the airbag top 311 is recorded once at each preset air pressure value, and the corresponding relationship is established and stored in the controller.

[0051] The control drive component 200 moves in two directions to the position corresponding to the coordinates of the core pressure-bearing area; the control airbag structure 310 reaches a preset detection pressure, such as 0.1 MPa, and the pressure value of the airbag top 311 corresponding to the core pressure-bearing area is recorded by a pressure sensor. At the same time, the initial pressure distribution map of this area is read through the pressure sensor array. The system analyzes the pressure map, identifies 1-2 core areas with the highest actual pressure and the greatest need for intervention, records their precise coordinates, and determines them as the target parts of the human body.

[0052] The drive assembly 200 and the airbag assembly 300 are activated, causing at least a portion of the airbag structure 310 to extend out of the through hole 121 of the mounting carrier 100 and push towards the target part of the human body.

[0053] It is understandable that the target position of the drive component 200 can be actively set in the controller to push the target part.

[0054] From sensor debugging, parameter calibration, target positioning to operation initiation, the entire process requires no manual intervention, making it suitable for long-term bedridden care scenarios. Precise control of the airbag top extension length and supporting air pressure prevents excessive pressure from causing injury or insufficient pressure from leading to decompression failure. The calibration process ensures the accuracy of the correspondence between air pressure and movement distance, and the stable waiting step in the detection phase reduces pressure data errors. The overall method is logically rigorous, reducing nursing risks. By retrieving coordinate sets, positioning the drive component 200, and calibrating pressure detection, the process accurately identifies target areas of the body under severe pressure, avoiding blind intervention, resulting in more targeted decompression and a more significant effect in preventing bedsores.

[0055] It is understood that the gas pressure range of the gas storage cavity 312 in this application is 0.2~0.4MPa.

[0056] In some embodiments, when the start-up drive assembly 200 and airbag assembly 300 are working, the controller controls the compressor and solenoid valve to independently group and deliver air to multiple airbag structures 310. After at least one set of airbag structures 310 is inflated, the solenoid valve connected to it switches to a closed state to maintain its preset air pressure, which is used to keep the top of the airbag in continuous contact with the target part of the human body. At least one set of airbag structures 310 alternately switches the air intake and exhaust states of the solenoid valve to achieve cyclic inflation and deflation.

[0057] This application takes three sets of airbag structures 310 as an example. The compressor's outlet is connected to the main air pipe, which in turn connects to three branch air pipes. Each branch air pipe corresponds to one end of the air inlet of a solenoid valve. One three-way solenoid valve corresponds to one set of airbag structures 310. The three-way solenoid valve is connected to each branch air pipe via the main air pipe at its air delivery end, supplying air to each airbag structure 310 in the same set. The controller can independently control the state of each solenoid valve, switching the air inlet, closed, and exhaust states of each set of airbag structures 310, thereby achieving independent group control of multiple sets of airbag structures 310.

[0058] Specifically, in calibrating the air pressure and displacement relationship of the airbag structure 310, it is ensured that 0.4MPa corresponds to a 12mm rise, 0.3MPa corresponds to an 8mm rise, and 0.1MPa corresponds to a 6mm depression.

[0059] The three airbag structures 310 are designated as groups A, B, and C, with each row parallel to the width of the mounting carrier 100 forming one group. The controller can independently control the state of each solenoid valve to achieve cyclic inflation and deflation of multiple airbag structures 310. Group B is located between groups A and C. In the first stage of the working cycle, group A airbag structure 310 is inflated to 0.4 MPa and raised 12 mm to form a support surface, supporting the first core pressure zone. After group A airbag structure 310 is inflated, its connected solenoid valve switches to a closed state to maintain its preset air pressure, ensuring the airbag top remains in contact with the target body part. Group B airbag structure 310 maintains a 0.3 MPa support state to bear the weight of the main body, maintaining stability while adhering to the body. Group C airbag structure 310 can be selected to inflate or deflate as needed to achieve fine-tuning of local pressure. That is, group C airbag structure 310 alternately switches the air intake and exhaust states of the solenoid valve to achieve cyclic inflation and deflation. In the second stage, group C airbag structure 310 is inflated to 0.4 MPa and raised 12 mm to form a support surface, supporting the core pressure area; group B airbag structure 310 maintains a support state of 0.3 MPa to bear the weight of the main body and remains stable without switching groups; group A airbag structure 310 can be inflated or deflated as needed to achieve fine-tuning of local pressure. In the third stage, group B airbag structure 310 is inflated to 0.4 MPa and raised 12 mm to form a support surface, supporting the core pressure area; groups A and C airbag structures 310 can be inflated or deflated as needed to achieve fine-tuning of local pressure. These three stages alternate, limiting the pressure time on the same area to a short range, thus effectively preventing the formation of pressure ulcers. The fixed support group design in the first two stages solves the problem of the body easily tipping over when the airbag is raised on one side, ensuring the stability of the patient's position. The third stage switches to a central support group and a bilateral freely switchable mode. With the central main support point stable, the airbags on both sides flexibly adapt to changes in the patient's position. This avoids the limitations of the first two stages of support group in terms of flexibility, and also prevents the body from shifting due to flexible adjustments, achieving dynamic balance. At the same time, the pebble-shaped airbag top 311, made of medical-grade silicone with a radius of 20mm, can closely conform to the curves of the human body. With multiple displacement adjustments of 12mm~8mm~6mm, it adapts to the physiological structure of patients of different body types, upgrading from passive support to active conformation.

[0060] Understandably, the pressure sensor monitors the pressure in the core area in real time, and if the peak pressure in any area exceeds 4 kPa, the system will automatically switch modes in advance.

[0061] The anti-bedsore device of this application can be designed to adapt to different body shapes. For slender body types, weighing ≤65kg: the spacing of the through holes 121 is smaller, the coverage area of ​​the core area is reduced, and the positioning of the airbag components 300 is more concentrated on key points such as both sides of the spine and the center of the buttocks; Standard body type, weight 65-90kg: moderate coverage of the core area, and the 121 through holes are adapted to the natural distribution of the back, buttocks and back of the thighs of a normal human body; For overweight individuals (weight ≥ 90kg): The core area coverage is expanded, and the spacing of the 121 through holes is larger than that of the corresponding standard body type. The 300 positioning of the airbag components is more dispersed, avoiding excessive local pressure concentration.

[0062] This application also provides a bed including the aforementioned anti-bedsore device. The anti-bedsore device is disposed on the upper side of the bed and can be positioned against the core pressure area of ​​the body when a person is lying on the bed to prevent bedsores or to treat bedsores.

[0063] In some specific embodiments, the ball screw drive mechanism uses a micro stepper motor with a power of 50W; the compressor is a low-noise air compressor with a power of 450W, a working pressure of 0.2-0.4MPa, and an operating noise of less than or equal to 40dB. The mounting carrier 100 is made of medical-grade ABS plastic conforming to GB / T12672-2009 standard, and is manufactured into a rectangular frame with dimensions of 110cm×80cm×7cm through injection molding. The surface of the frame is machined with an array of through holes 121, with a hole diameter of 30mm and a spacing of 35mm, for guiding the positioning and limiting of the movable airbag assembly 300. A Φ8mm air tube and electrical cable channel are pre-embedded inside the frame. Linear guide rails are installed on the sides; a 5mm thick medical rubber anti-slip pad is attached to the bottom of the frame, and a 30mm chamfer is reserved around the perimeter. The air storage chamber 312 of the airbag structure 310 is a cylindrical structure with a diameter of 25mm and a length of 40mm, formed by injection molding, with an internal volume of 5ml. The top of the airbag 311 is made of medical silicone with a Shore hardness of 28°±2° and conforming to the GB16174-2015 standard. It is molded into an arc-shaped top with R=20mm, which can closely fit the curvature of the human body. With multiple displacement adjustments of 12mm~8mm~6mm, it can adapt to the physiological structure of patients of different body types, upgrading from passive support to active fit.

[0064] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A device for preventing bedsores, characterized in that, include: The mounting carrier has a accommodating space and a bearing surface with through holes; The driving component, disposed within the accommodating space inside the mounting carrier, is capable of moving within the mounting carrier in a horizontal direction or on a horizontal plane; An airbag assembly is disposed on a drive assembly. The airbag assembly includes multiple airbag structures. The drive assembly is used to drive at least one airbag structure to move in a horizontal direction or on a horizontal plane. At least a portion of the airbag structure can extend out of the through hole to act on a target part of the human body.

2. The anti-bedsore device according to claim 1, characterized in that: The drive component is capable of moving within the mounting carrier along the length and width directions of the mounting carrier.

3. The anti-bedsore device according to claim 2, characterized in that: The airbag structure includes an air storage cavity and a flexible airbag top. The air storage cavity is a rigid structure used to contain gas. The air storage cavity is provided with an air inlet and an outlet. The top of the air storage cavity is provided with an opening, and the airbag top seals and covers the opening.

4. The anti-bedsore device according to claim 3, characterized in that: The airbag structure includes an air tube, which is disposed on the inner side wall of the mounting carrier and connected to the air inlet and outlet of the air storage cavity.

5. The anti-bedsore device according to claim 4, characterized in that: The anti-bedsore device also includes a compressor, a controller, and a solenoid valve. The compressor is connected to the solenoid valve, and the solenoid valve is connected to the air tube. The solenoid valve also has an exhaust end. The controller is electrically connected to the compressor and the solenoid valve. The solenoid valve is used to switch the air intake state, closed state, and exhaust state of the air storage chamber.

6. The anti-bedsore device according to claim 5, characterized in that: The airbag assembly includes multiple sets of airbag structures, and the compressor is connected to multiple sets of solenoid valves, which are respectively connected to each of the air storage chambers. The controller can independently switch the air intake, closed and exhaust states of the multiple sets of airbag structures through the solenoid valves.

7. The anti-bedsore device according to claim 6, characterized in that: Pressure sensors are installed inside the trachea, inside the air storage cavity, and on top of the airbag, and each pressure sensor is electrically connected to the controller.

8. A method of using the anti-bedsore device as described in claim 7, characterized in that, Includes the following steps: Prepare the aforementioned anti-bedsore device; The controller controls the compressor and the solenoid valve to supply air to the airbag structure, and calibrates the correspondence between air pressure and the moving distance of the top of the airbag; Retrieve the corresponding coordinate set of the core pressure area of ​​the human body from the pre-stored ergonomics database; Move the drive component to the position corresponding to the coordinates of the core pressure area, so that the airbag structure reaches the preset detection air pressure, and record the airbag top pressure value corresponding to the core pressure area; Based on the pressure value at the top of the airbag corresponding to the core pressure area, the target part of the human body to be acted upon is determined; The drive assembly and the airbag assembly are activated, causing at least a portion of the airbag structure to extend out of the through-hole.

9. The method of use according to claim 8, characterized in that: When the drive assembly and the airbag assembly are started to work, the controller controls the compressor and the solenoid valve to independently group and deliver air to multiple groups of the airbag structures; After at least one set of the airbag structures is inflated, the solenoid valve connected to it switches to a closed state to maintain its preset air pressure, so as to keep the top of the airbag continuously in contact with the target part of the human body. At least one set of the airbag structures alternately switches the air intake and exhaust states of the solenoid valve to achieve cyclic inflation and deflation.

10. A bed, characterized in that, Includes the anti-bedsore device as described in any one of claims 1 to 7 above.

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