Intelligent body position adjusting system and nursing bed

Abstract

The intelligent body position adjusting system comprises a lower bed frame and a control system, a vertical plate is arranged on the inner side of the lower bed frame, four stand columns are fixedly connected to the upper end of the lower bed frame, and the upper ends of the four stand columns are jointly connected with an upper bed frame; a waist-hip lifting mechanism and a hip joint shaft frame are arranged on the inner side of the upper bed frame, the waist-hip lifting mechanism and a pneumatic tendon are combined, the problems of shearing force elimination and overall posture stability in the turning-over action process are solved, and the risk of skin injury is eradicated fundamentally through the unique action principle of space friction-free rotation; the pneumatic tendon focuses on solving the supporting comfort, the pressure distribution uniformity and the adaptability to individual differences when the patient turns over in place and maintains a lateral position, and ensures that all parts of the body of the patient are uniformly and adaptively supported under a target body position through a rigid-flexible combined and active deformation structure; local high pressure and uncomfortable stability caused by long-time side lying are prevented.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an intelligent body position adjustment system and a nursing bed. Background Art

[0002] Currently, medical assistive devices, exemplified by nursing beds, are becoming increasingly widespread. Common nursing beds are designed to assist patients with essential daily activities while also facilitating functions such as turning and lifting during nursing care. On the one hand, the mobility of those using nursing beds is extremely limited, otherwise they wouldn't require assistance from the bed, thus requiring a simple control method for the bed. On the other hand, the medical staff—doctors, nurses, caregivers, and other caregivers—who provide care for patients with nursing beds generally face heavy workloads, high work intensity, and complex working conditions. Therefore, a simple and efficient control method for the bed is also urgently needed.

[0003] Traditional nursing bed turning mechanisms (such as single-axis tilt and simple airbag lifting) have problems such as stiff movements, large shear force, unstable support, and single adjustment dimension. At the same time, the turning movement is too rough, and the patient's body is lifted up as a whole like a "plank". Huge shear force is generated between the waist and hips and the mattress, which can easily cause skin damage. Shear injuries are an important cause of pressure sores. During the turning process, the patient's body lacks multi-point, gradual, and physiologically consistent support, which makes it easy to slide or distort the posture. The comfort is poor and there is a risk of slipping. It is impossible to finely control the turning angle and posture (such as only tilting the waist and hips and keeping the head stable).

[0004] To this end, we propose an intelligent posture adjustment system and nursing bed to solve the above problems. Summary of the Invention

[0005] 1. Technical problems to be solved In response to the problems existing in the existing technology, the purpose of this application is to provide stroke patients with unclear consciousness or limited limb movement with automatic turning from supine position to various complex lateral positions (such as 30°, 45°, 60°), and effectively avoid skin shear injuries and accidental slipping in the process. Compared with the existing technology, an intelligent posture adjustment system and nursing bed are provided, which achieve the technical problem of effectively avoiding skin shear injuries during turning through the cooperation of the waist and hip support mechanism and the adaptive turning wing plate.

[0006] 2. Technical solution In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0007] An intelligent body position adjustment system and a nursing bed include a lower bed frame and a control system, wherein a vertical plate is provided on the inner side of the lower bed frame, and a column is fixedly connected to the upper end of the lower bed frame, wherein four columns are provided, and the upper ends of the four columns are commonly connected to the upper bed frame, and a waist and hip lifting mechanism and a hip joint axis frame are respectively provided on the inner side of the upper bed frame, wherein two hip joint axis frames are provided, and the waist and hip lifting mechanism is located between the two hip joint axis frames, and a turning wing plate is provided on the hip joint axis frame.

[0008] Furthermore, the waist and hip lifting mechanism includes a Z-shaped frame fixed to the inner side of the upper bed frame, and the Z-shaped frame is arranged in two groups. Each group of the Z-shaped frames is provided with two electric servo push rods, and each of the electric servo push rods is provided with a universal ball joint. The ball head of the universal ball joint is fixedly connected to the telescopic end of the electric servo push rod, and a support plate is connected to the inner ball bowl of the ball head, and an avoidance groove is provided under the support plate.

[0009] Furthermore, the electric servo push rod is distributed in a rectangular shape, the stroke of the electric servo push rod is 150 mm, the thrust is 500 N, the support plate is arranged in an I-shape, the support plate is made of aviation aluminum alloy, and the surface of the support plate is covered with a low friction coefficient, highly transparent skin-friendly material.

[0010] Furthermore, the skin-friendly material is medical silicone, the thickness of the medical silicone is 5mm-8mm, the friction coefficient is <0.2, and a sacrum avoidance groove is preset in the center of the support plate, the curvature radius of the avoidance groove is R=120mm--180mm, and the depth is 15-25mm.

[0011] Furthermore, the turning wing plate includes a U-shaped bracket fixed on the hip joint axis frame, and a Hooke's hinge is provided on the U-shaped bracket. The Hooke's hinge includes a base, a cross shaft, a top seat and a floating joint. The Hooke's hinge base is locked on the U-shaped bracket by bolts, and a cross shaft is provided inside the Hooke's hinge. An electric push rod is movably connected to the cross shaft, and the Hooke's hinge top seat is connected to an adaptive fine-tuning mechanism through a floating joint.

[0012] Furthermore, the adaptive fine-tuning mechanism includes a wing plate frame movably connected to the floating joint, three placement slots are provided in the wing plate frame, and wing plates are installed in the placement slots. The wing plate includes two ribs, one of which has a perforation on the side wall, and a pneumatic tendon is connected between the two ribs. The wing plate is made of aviation aluminum alloy, the thickness of the wing plate is 5mm-8mm, and a flexible thin film pressure sensor array is also provided on the upper surface of the wing plate frame.

[0013] Furthermore, a through hole is provided on the side wall of each placement slot of the wing plate frame, and the through hole corresponds one-to-one to the opening of the side wall of the retaining edge, and the air inlet end of the pneumatic tendon passes through the opening and the through hole.

[0014] Furthermore, each through hole of the wing frame is connected to a branch air pipe, and the branch air pipe is connected to the main pipe. The branch air pipe is a rubber hose, and the main pipe is connected to the air tank, and the air tank is connected to the air pump. The air pump is installed on the lower bed frame, and each branch air pipe is provided with a solenoid valve.

[0015] An intelligent body position adjustment system and a control system for a nursing bed: 1. Input: Flexible thin film pressure sensor array: monitors body pressure distribution in real time, converts pressure data into electrical signals, and transmits them to the control system central processor in the processing center; 2. Processing center: Control system central processor: receives electrical signals from the pressure sensor array and performs preliminary processing and data collation; AI algorithm module: electrically connected to the central processing unit, receives processed data, and performs the following tasks: 1. Pressure ulcer risk analysis; 2. Optimal posture calculation; 3. Pressure distribution decision-making; 3. Execution instruction AI algorithm module: generates execution instructions based on analysis results and transmits them to the execution agency; 4. Actuator: Pneumatic muscle: receives execution instructions, performs inflation or deflation adjustments, and adjusts pressure distribution; support mechanism: receives execution instructions, performs lifting or rotation operations, and assists in adjusting body position.

[0016] 5. Output part: Pneumatic tendon and waist and hip lifting mechanism: operate according to the execution instructions to achieve body curve fitting and automatic turning over, completing pressure management and body position adjustment.

[0017] 6. Data system: Recording module: records time, angle, pressure value and other data, and transmits the data to the database through electrical connection; Database: stores historical data for subsequent analysis and reference; Display: displays the current status in real time and issues an alarm signal when necessary, and is electrically connected to the database to obtain and display data.

[0018] Compared with the existing technology, the advantages of this application are: (1) A hip and waist support mechanism is provided, which directly simulates the core action of supporting the waist and hips in the patented care, and decomposes the "turning over" action into "contact friction + frictionless rotation" from the overall rigid tilt in the existing technology to local flexible support, eliminating the harmful shear force between the skin and the mattress from the root.

[0019] (2) Traditional side flaps are usually rigid integral structures that cannot adapt to individual body shape differences of patients. This device combines pneumatic tendons with rigid wing plates. At the same time, each wing plate (802) is independently set. By adjusting the contraction force of the pneumatic tendons at different positions, the wing plate is locally bent and deformed, dynamically adapting to the three-dimensional curved surface contour of the patient's body in the coverage area (such as the concave waist or convex hip when lying on the side), solving the problems of pressure concentration, uneven support, poor comfort, slow airbag response, poor controllability and low positioning accuracy caused by traditional rigid integral structure side flaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall axial structure of this application; Figure 2 This is a schematic diagram of the overall structure of the application when viewed from above; Figure 3 For this application Figure 2 A schematic diagram of the structure at center A; Figure 4 This is a front structural diagram of the present application; Figure 5 This is a schematic diagram of the local structure of the adaptive fine-tuning mechanism of this application; Figure 6 This is a schematic diagram of the upper and lower bed frames of the present application from a top view; Figure 7 This is a flow chart of the control system of this application.

[0021] Description of the numbers in the figure: 1. Lower bed frame; 2. Vertical board; 3. Vertical column; 4. Upper bed frame; 5. Waist and hip lifting mechanism; 501. Z-shaped frame; 502. Electric servo push rod; 503. Universal ball joint; 504. Support plate; 6. Hip joint axis frame; 7. Turning mechanism; 701. U-shaped bracket; 702. Hook hinge; 703. Cross axis; 704. Floating joint; 705. Electric push rod; 8. Adaptive fine-tuning mechanism; 801. Wing frame; 802. Wing; 803. Pneumatic tendon; 804. Branch air pipe; 805. Main pipe; 806. Air tank; 807. Air pump. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] Example 1: The present invention provides an intelligent body position adjustment system and a nursing bed. Figure 1-Figure 7 , an intelligent body position adjustment system and a nursing bed, comprising a lower bed frame 1 and a control system, a vertical plate 2 is provided on the inner side of the lower bed frame 1, a vertical column 3 is fixedly connected to the upper end of the lower bed frame 1, four vertical columns 3 are provided, and the upper ends of the four vertical columns 3 are commonly connected to an upper bed frame 4, a waist and hip lifting mechanism 5 and a hip joint axis frame 6 are respectively provided on the inner side of the upper bed frame 4, two hip joint axis frames 6 are provided, the waist and hip lifting mechanism 5 is located between the two hip joint axis frames 6, and a turning mechanism 7 is provided on the hip joint axis frame 6.

[0024] The waist and hip lifting mechanism 5 includes a Z-shaped frame 501 fixed to the inner side of the upper bed frame 4. The Z-shaped frame 501 is arranged in two groups. Each group of Z-shaped frames 501 is provided with two electric servo push rods 502. Each electric servo push rod 502 is provided with a universal ball joint 503. The ball head of the universal ball joint 503 is fixedly connected to the telescopic end of the electric servo push rod 502. The ball bowl inside the ball head is connected to a support plate 504, and an avoidance groove is provided under the support plate 504.

[0025] See the attached drawings in the specification Figure 2 The two hip joint shaft frames 6 pass through the avoidance groove, and the setting of the avoidance groove can prevent the hip joint shaft frames 6 from colliding with the support plate 504.

[0026] The electric servo push rod 502 is distributed in a rectangular shape, the stroke of the electric servo push rod 502 is 150 mm, the thrust is 500 N, the support plate 504 is set to an I-shape, the support plate 504 is made of aviation aluminum alloy, and the surface of the support plate 504 is covered with a low friction coefficient, highly transparent skin-friendly material.

[0027] The skin-friendly material is medical silicone with a thickness of 5mm-8mm and a friction coefficient of <0.2. A sacrum avoidance groove is preset in the center of the support plate 504 with a curvature radius R=120mm--180mm and a depth of 15-25mm.

[0028] The turning mechanism 7 includes a U-shaped bracket 701 fixed on the hip joint axis frame 6, and a Hooke's hinge 702 is provided on the U-shaped bracket 701. The Hooke's hinge 702 includes a base, a cross shaft 703, a top seat and a floating joint 704. The base of the Hooke's hinge 702 is locked on the U-shaped bracket 701 by bolts. A cross shaft 703 is provided inside the Hooke's hinge 702, and an electric push rod 705 is movably connected to the cross shaft 703. The top seat of the Hooke's hinge 702 is connected to the adaptive fine-tuning mechanism 8 through the floating joint 704.

[0029] The adaptive fine-tuning mechanism 8 includes a wing plate frame 801 movably connected to the floating joint 704. Three placement slots are provided in the wing plate frame 801. The wing plate 802 is installed in the placement slot. The wing plate 802 includes two ribs, one of which has a perforation on the side wall. A pneumatic tendon 803 is connected between the two ribs. The wing plate 802 is made of aviation aluminum alloy. The thickness of the wing plate 802 is 3mm-5mm. A flexible thin film pressure sensor array is also provided on the upper surface of the wing plate frame 801.

[0030] See the attached drawings in the specification Figure 5 The wing panel 802 is made of aviation aluminum alloy with a thickness of only 3mm-5mm. This setting ensures that the wing panel can be elastically deformed without breaking. The bending angle of the wing panel 802 is ±15°.

[0031] A through hole is provided on the side wall of each placement slot of the wing plate 802 frame 801, and the through hole corresponds one-to-one to the opening of the side wall of the retaining edge, and the air inlet end of the pneumatic tendon 803 passes through the opening and the through hole.

[0032] See the attached drawings in the specification Figure 5 When the pneumatic tendon 803 is inflated, it expands radially and shortens axially, thereby generating a strong pulling force, just like the contraction of human muscles. At the protruding parts of the bones, the pneumatic tendon 803 deflates and stretches, and the wing plate 802 concave to avoid it. At the concave parts of the body, the pneumatic tendon 803 shortens and the wing plate convexly supports it. The characteristics of shortening when inflated to generate pulling force and lengthening when deflated to release pressure are used to achieve intelligent adjustment that combines rigidity and flexibility, providing sufficient support while flexibly avoiding the bones.

[0033] Each through hole of the wing frame 801 is connected to a branch air pipe 804, which is a rubber hose. The branch air pipe 804 is connected to the main pipe 805, the main pipe 805 is connected to the air tank 806, the air tank 806 is connected to the air pump 807, and the air pump 807 is installed on the lower bed frame 1. Each branch air pipe 804 is provided with a solenoid valve.

[0034] See the attached drawings in the specification Figure 5 When the pneumatic tendon 803 needs to be inflated, the solenoid valve opens, and the compressed air enters the branch air pipe 804 through the main line 805 and then enters the pneumatic tendon 803 to expand it. When the pneumatic tendon 803 needs to be deflated, the solenoid valve controls the discharge of air flow and the pneumatic tendon 803 contracts. The above settings can be controlled individually. Since each pneumatic tendon 803 can be controlled by an independent branch air pipe 804 and a solenoid valve, it can be controlled individually, which means that the pressure of different parts of the body can be adjusted independently to achieve optimal body pressure distribution and comfort.

[0035] An intelligent body position adjustment system and a control system for a nursing bed: 1. Input: Flexible thin film pressure sensor array: monitors body pressure distribution in real time, converts pressure data into electrical signals, and transmits them to the control system central processor in the processing center; 2. Processing center: Control system central processor: receives electrical signals from the pressure sensor array and performs preliminary processing and data collation; AI algorithm module: electrically connected to the central processing unit, receives processed data, and performs the following tasks: 1. Pressure ulcer risk analysis; 2. Optimal posture calculation; 3. Pressure distribution decision-making; 3. Execution instruction AI algorithm module: generates execution instructions based on analysis results and transmits them to the execution agency; 4. Actuator: Pneumatic muscle 803: receives execution instructions, performs inflation or deflation adjustments, and adjusts pressure distribution; support plate 504 mechanism: receives execution instructions, performs lifting or rotation operations, and assists in adjusting body position.

[0036] 5. Output part: Pneumatic tendon 803 and support plate 504 mechanism: operate according to the execution instructions to achieve body curve fitting and automatic turning over, completing pressure management and body position adjustment.

[0037] 6. Data system: Recording module: records time, angle, pressure value and other data, and transmits the data to the database through electrical connection; Database: stores historical data for subsequent analysis and reference; Display: displays the current status in real time and issues an alarm signal when necessary, and is electrically connected to the database to obtain and display data.

[0038] Working Principle: When the control system receives a command to turn over (e.g., a 30° left-side turn), the waist and hip support mechanism 5 is activated first. The four electric servo actuators 502 synchronously lift the support plate 504 vertically, lifting the patient's waist and hips 50mm off the mattress to eliminate friction, prepare for subsequent rotation and turn over, and eliminate initial shear force. The system then controls the differential expansion and contraction of the electric actuators 705. In the lifted state, the expansion and contraction of each electric actuator 705 is precisely controlled (right extension / left contraction), allowing the support plate 504 to rotate smoothly and gradually around the Y-axis parallel to the patient's spine, for example (0°->30°). The lifting height can be adaptively fine-tuned as the angle increases, maintaining a gentle lifting state at all times. At the same time, one-half of the electric actuators 705 can be fine-tuned to compensate for side slip. The core innovation of the existing technology, which shifts from overall rigid tilting to localized flexible support, lies in breaking down the "turning over" action into "friction-free lifting + frictionless rotation," eliminating the harmful shear force between the skin and the mattress from the root. This lifting and frictionless rotation directly simulate the core action of supporting the waist and hips in the patented treatment, eliminating the risk of shear injuries and postural instability / slippage during turning over. This is a profound response of the mechanical structure to biomechanical requirements. At the same time, traditional side-turning boards are usually rigid integral structures that cannot adapt to individual body differences, such as fatness, thinness, scoliosis, and local body deformation during turning, resulting in uneven pressure and support, and poor comfort. Traditional airbag turning devices, although soft, have slow response and poor controllability, making it difficult to achieve complex angles and postures, and lack the ability to actively and dynamically adapt to the patient's body contours. This device decomposes the traditional single-piece side flip plate into multiple independent narrow strip-shaped rigid wing plate frames 801 arranged longitudinally. An independent electric push rod 705 is set under each wing plate frame 801 to control it to rotate around the hip joint axis frame 6. When flipping to the left, the right wing plate frame 801 group rotates to a 25° preparatory angle. The upper surface of each independent wing plate frame 801 is integrated with a flexible film pressure sensor array. The control system scans the body pressure distribution according to the pressure sensor of the flexible film pressure sensor array, and independently and accurately adjusts the air pressure of the pneumatic tendon 803 in the groove of each wing plate 802. By adjusting the contraction force of the pneumatic tendon 803 at different positions, the wing plate 802 is locally bent and deformed, dynamically adapting to the three-dimensional curved surface contour of the patient's body in the coverage area, such as fitting to avoid depression or bulge of the hip when lying on the side; The rotation angles of all wings 802 are coordinated by controlling the overall tilt angle of the electric push rod 705. At the same time, each pneumatic tendon 803 can be fully or partially inflated to achieve local deformation to adapt to the local body surface contour, forming a "whole motion framework + local fine adaptation" structure; Finally, it enters the load-bearing transfer stage. When all the wing panels 802 fit the patient's body curve, the waist and hip lifting mechanism 5 slowly descends in height, and the patient's body weight is gradually transferred to the shaped wing panels 802. When the pressure sensor of the flexible film pressure sensor array detects that the wing panels 802 support the entire area evenly, the lifting mechanism is completely reset to the horizontal position, and the pneumatic tendon 803 group of the wing panels 802 locks the air pressure to maintain a 30° side-lying posture. If the patient moves and causes uneven pressure, the system will readjust the tendon air pressure in real time to maintain adaptation until the wing panels 802 are deflated and flattened after receiving the reset command, completing the full cycle of action. The above-mentioned waist and hip support mechanism 5 focuses on solving the problems of eliminating shear force and stabilizing the overall posture during the turning over action. Through the unique action principle of frictionless rotation in space, it eliminates the risk of skin damage from the root; the pneumatic tendon 803 focuses on solving the support comfort, pressure distribution uniformity and adaptability to individual differences when maintaining the side-lying position after turning over. Through the combination of rigidity and flexibility and the active deformation structure, it ensures that all parts of the patient's body are evenly and adaptively supported in the target position, preventing local high pressure and discomfort caused by long-term side lying.

[0039] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed in the present application based on the technical solution and its improved ideas, which should be covered by the protection scope of the present application.

Claims

1. An intelligent body position adjustment system and a nursing bed, comprising a lower bed frame (1) and a control system, characterized in that: A vertical plate (2) is provided on the inner side of the lower bed frame (1), and a vertical column (3) is fixedly connected to the upper end of the lower bed frame (1), wherein the vertical columns (3) are provided in four pieces, and the upper ends of the four vertical columns (3) are commonly connected to the upper bed frame (4), and a waist and hip lifting mechanism (5) and a hip joint axis frame (6) are provided on the inner side of the upper bed frame (4), respectively, wherein the hip joint axis frame (6) is provided in two pieces, and the waist and hip lifting mechanism (5) is located between the two hip joint axis frames (6), and a turning mechanism (7) is provided on the hip joint axis frame (6).

2. The intelligent body position adjustment system and nursing bed according to claim 1, characterized in that: The waist and hip lifting mechanism (5) comprises a Z-shaped frame (501) fixed on the inner side of the upper bed frame (4), the Z-shaped frame (501) being arranged in two groups, each group of the Z-shaped frames (501) being provided with two electric servo push rods (502), each of the electric servo push rods (502) being provided with a universal ball joint (503), the ball head of the universal ball joint (503) being fixedly connected to the telescopic end of the electric servo push rod (502), the inner ball bowl of the ball head being connected to a support plate (504), and an avoidance groove being provided below the support plate (504).

3. The intelligent body position adjustment system and nursing bed according to claim 2, characterized in that: The electric servo push rod (502) is distributed in a rectangular shape, has a stroke of 150 mm, and a thrust of 500 N. The support plate (504) is arranged in an I-shape, and is made of aviation aluminum alloy. The surface of the support plate (504) is covered with a low-friction, highly transparent, skin-friendly material.

4. The intelligent body position adjustment system and nursing bed according to claim 3, characterized in that: The skin-friendly material is medical silica gel, the thickness of the medical silica gel is 5mm-8mm, the friction coefficient is <0.2, and a sacrum avoidance groove is preset in the center of the support plate (504), the curvature radius of the avoidance groove is R=120mm--180mm, and the depth is 15mm-25mm.

5. The intelligent body position adjustment system and nursing bed according to claim 1, characterized in that: The turning mechanism (7) includes a U-shaped bracket (701) fixed on the hip joint axis frame (6), a Hooke's hinge (702) is provided on the U-shaped bracket (701), and the Hooke's hinge (702) includes a base, a cross shaft (703), a top seat and a floating joint (704). The base of the Hooke's hinge (702) is locked on the U-shaped bracket (701) by bolts, a cross shaft (703) is provided inside the Hooke's hinge (702), an electric push rod (705) is movably connected to the cross shaft (703), and the top seat of the Hooke's hinge (702) is connected to an adaptive fine-tuning mechanism (8) through a floating joint (704).

6. The intelligent body position adjustment system and nursing bed according to claim 1, characterized in that: The adaptive fine-tuning mechanism (8) includes a wing plate frame (801) movably connected to a floating joint (704), three placement slots are provided in the wing plate frame (801), and wing plates (802) are installed in the placement slots. The wing plate (802) includes two ribs, one of which has a perforation provided on its side wall, and a pneumatic tendon (803) is connected between the two ribs. The wing plate (802) is made of aviation aluminum alloy, and the thickness of the wing plate (802) is 5 mm to 8 mm. A flexible film pressure sensor array is also provided on the upper surface of the wing plate frame (801).

7. The intelligent body position adjustment system and nursing bed according to claim 6, characterized in that: A through hole is provided on the side wall of each placement slot of the wing plate frame (801), and the through hole corresponds one-to-one with the opening of the side wall of the retaining edge, and the air inlet end of the pneumatic tendon (803) passes through the opening and the through hole.

8. The intelligent body position adjustment system and nursing bed according to claim 1, characterized in that: Each through hole of the wing frame (801) is connected to a branch air pipe (804), the branch air pipe (804) being a rubber hose, the branch air pipe (804) being connected to a main pipe (805), the main pipe (805) being connected to an air storage tank (806), the air storage tank (806) being connected to an air pump (807), the air pump (807) being mounted on the lower bed frame (1), and each branch air pipe (804) being provided with a solenoid valve.

9. The intelligent body position adjustment system and the control system of the nursing bed according to claim 1, characterized in that:

1. Input: Flexible thin film pressure sensor array: monitors body pressure distribution in real time, converts pressure data into electrical signals, and transmits them to the control system central processor in the processing center; 2. Processing center: Control system central processor: receives electrical signals from the pressure sensor array and performs preliminary processing and data collation; AI algorithm module: electrically connected to the central processing unit, receives processed data, and performs the following tasks:

1. Pressure ulcer risk analysis; 2. Optimal posture calculation; 3. Pressure distribution decision-making; 3. Execution instruction AI algorithm module: generates execution instructions based on analysis results and transmits them to the execution agency; 4. Actuator: Pneumatic tendon (803): receives execution instructions, performs inflation or deflation adjustment, and adjusts pressure distribution; waist and hip lifting mechanism (5): receives execution instructions, performs lifting or rotation operations, and assists in adjusting body position; 5. Output part: pneumatic tendon (803) and waist and hip lifting mechanism (5): according to the execution instruction operation, realize body curve fitting and automatic turning over, complete pressure management and body position adjustment; 6. Data system: Recording module: records time, angle, pressure value and other data, and transmits the data to the database through electrical connection; Database: stores historical data for subsequent analysis and reference; Display: Displays the current status in real time and issues an alarm signal when necessary. It is electrically connected to the database to obtain and display data.

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