Multifunctional constant-temperature air cushion bed for preventing deep venous thrombosis and pressure sores and control method

Abstract

The invention discloses a multifunctional constant-temperature air cushion bed capable of preventing deep venous thrombosis and pressure sores and a control method, and relates to the technical field of medical care equipment, the multifunctional constant-temperature air cushion bed comprises a bed body frame, a mounting bin is arranged at the bottom end of the bed body frame, and a supporting air bag is fixed in the mounting bin; an upper air cushion set, a lower air cushion set, a left air cushion set and a right air cushion set are fixed to the top end of the bed body frame, a waist air cushion set is arranged in the middle of the bed body frame, an air box is arranged on the outer side of the bed body frame, and an inflation assembly is installed on the outer wall of the air box. According to the invention, manual frequent turning over is not needed, inflation and deflation of each air bag are automatically adjusted through the PLC, a patient can be assisted to change the body position, physical exhaustion and manpower demand of nursing personnel are reduced, and meanwhile, the problems of joint injury, wound traction and the like of the patient caused by improper manual operation are avoided; the problems that a traditional air cushion bed is insufficient in supporting and the body slides down when lying on the side can be solved, and the risk that local skin is pressed is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical and nursing equipment technology, and in particular to a multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers, and a control method thereof. Background Technology

[0002] In the field of medical care, the management of body position and prevention of complications for long-term bedridden patients (such as postoperative patients, paralyzed patients, and elderly people with disabilities) is one of the core challenges in clinical nursing.

[0003] In current clinical practice, assisting long-term bedridden patients to change their position mainly relies on manual operation, which presents two major problems: First, nursing staff need to expend a lot of physical strength, and a single operation often requires 2-3 people to cooperate, making it difficult to guarantee a position change frequency of once every 2 hours in scenarios where nursing staff are short-staffed; Second, during manual turning, improper operation can easily lead to joint damage, wound traction, or discomfort caused by poor control of the range of motion.

[0004] Meanwhile, existing nursing methods also have limitations in addressing the two major complications of venous thrombosis and pressure ulcers faced by long-term bedridden patients: for the prevention of venous thrombosis, clinical practice often relies on anticoagulant drugs or the wearing of graded compression stockings, but drugs carry the risk of bleeding, and compression stockings are not suitable for patients with sensitive or damaged skin; for the prevention of pressure ulcers, existing air mattresses can only achieve intermittent inflation and decompression, which can relieve local pressure, but cannot further optimize blood circulation by combining with changes in body position, and some air mattresses are prone to problems such as insufficient side-rolling support and body slippage when patients are lying on their side, which increases the risk of local skin pressure.

[0005] In summary, existing nursing care programs struggle to balance the convenience of "active position adjustment" and the "effectiveness of complication prevention," necessitating a nursing device that can automatically assist patients in lying on their side while simultaneously achieving dual prevention of thrombosis and pressure ulcers. Therefore, this paper presents a multifunctional, temperature-controlled air mattress for preventing deep vein thrombosis and pressure ulcers, along with its control method. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a multifunctional, temperature-controlled air mattress for preventing deep vein thrombosis and pressure ulcers, along with its control method. It eliminates the need for frequent manual turning, automatically adjusting the inflation and deflation of each airbag via a PLC controller. This assists patients in changing positions, reducing the physical exertion and manpower requirements for caregivers. It also avoids joint injuries and wound traction caused by improper manual operation. Furthermore, it solves the problems of insufficient support and slippage when lying on one's side with traditional air mattresses, reducing the risk of local skin pressure and overcoming the deficiencies of existing technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers includes a bed frame. The bottom of the bed frame has an installation compartment containing a support airbag. The top of the bed frame has an upper airbag assembly, a lower airbag assembly, a left airbag assembly, and a right airbag assembly. A lumbar airbag assembly is located in the middle of the bed frame. An air box is located on the outer side of the bed frame, with an inflation component installed on its outer wall. A constant-temperature heating component is located inside the air box. A PLC controller is located at the top corner of the bed frame.

[0008] As a further embodiment of the present invention: the upper air cushion assembly includes an upper airbag, the side wall of the upper airbag is connected to a first inflation tube, and one end of the first inflation tube is connected to one side of the air box.

[0009] As a further embodiment of the present invention: the lower air cushion assembly includes a lower air bladder, the side wall of the lower air bladder is connected to a second inflation tube, and one end of the second inflation tube is connected to one side of the air box.

[0010] As a further embodiment of the present invention: the left air cushion assembly includes a left airbag, the side wall of the left airbag is connected to a third inflation tube, and one end of the third inflation tube is connected to one side of the air box.

[0011] As a further embodiment of the present invention: the right air cushion assembly includes a right airbag, and a fourth inflation tube is connected to the side wall of the left airbag, with one end of the fourth inflation tube connected to one side of the air box.

[0012] As a further embodiment of the present invention: the waist air cushion assembly includes a waist airbag, the bottom of which is connected to a fifth inflation tube, one end of which is connected to one side of the air box.

[0013] As a further embodiment of the present invention: a first solenoid valve is installed on the first inflation tube, a second solenoid valve is installed on the second inflation tube, a third solenoid valve is installed on the third inflation tube, a fourth solenoid valve is installed on the fourth inflation tube, and a fifth solenoid valve is installed on the fifth inflation tube. The side walls of the upper airbag, lower airbag, left airbag, and right airbag are all provided with deflation nozzles. The side wall of the supporting airbag is connected to a sixth inflation tube, one end of which is connected to the side wall of the air box. A sixth solenoid valve is installed on the sixth inflation tube.

[0014] As a further embodiment of the present invention: the inflation assembly includes an inflation pump installed on the outer wall of the air box, the inflation pump has an air outlet valve on its air nozzle, an air inlet pipe is installed on the air outlet valve, the air inlet pipe is connected to the air box, a pressure gauge is installed on the top of the air box, and the air box is provided with a deflation valve.

[0015] As a further embodiment of the present invention: the constant temperature heating component includes an electric heating block fixed to the inner wall of the bottom end of the air box, and a temperature sensor is installed on one side of the inner wall of the air box. Both the temperature sensor and the electric heating block are electrically connected to the PLC controller.

[0016] The control method for multifunctional constant-temperature air mattresses for preventing deep vein thrombosis and pressure ulcers includes the following steps: Step (1): Equipment initialization, PLC controller self-test and communication status of each electrical component, temperature sensor and pressure gauge collect initial data and transmit to PLC controller; Step (2): Parameter setting, preset the target temperature range and pressure threshold through the PLC controller; Step (3): Dynamic operation, the PLC controller drives each module to work together to achieve pressure balance and constant temperature control; Step (4): Real-time adjustment. Based on the patient's position, control a certain solenoid valve to close through the PLC controller and open the deflation nozzle of the airbag connected to the inflation tube where the solenoid valve is located to deflate the airbag. After the air pressure of the airbag decreases, the pressure on the patient's affected area is reduced until the patient feels comfortable, and then the deflation nozzle of the airbag is closed.

[0017] The beneficial effects of this invention are as follows: 1. No need to rely on frequent manual turning. The PLC controller automatically adjusts the inflation and deflation of each airbag, which can help patients change their position, reduce the physical exertion and manpower requirements of nursing staff, and avoid problems such as joint damage and wound traction caused by improper manual operation. It can also solve the problem of insufficient support and body slippage when lying on the side with a traditional air mattress, and reduce the risk of local skin pressure.

[0018] 2. Enhanced complication prevention and comfort care: The constant temperature heating component keeps the airbag at a suitable temperature of 25℃-40℃, and with dynamic pressure adjustment (0.5-1.5MPa), it can promote blood circulation through pressure changes, help prevent deep vein thrombosis and pressure sores, and can also adjust the corresponding airbag pressure in real time according to the patient's affected area to improve patient comfort. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of the multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers proposed in this invention.

[0020] Figure 2 This is a second-view three-dimensional structural diagram of the multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers proposed in this invention.

[0021] Figure 3 This is a third-view stereoscopic structural diagram of the multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers proposed in this invention.

[0022] Figure 4 This is a partial cross-sectional structural diagram of the multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers proposed in this invention.

[0023] Figure 5 This invention relates to a multifunctional, temperature-controlled air mattress for preventing deep vein thrombosis and pressure ulcers. Figure 3 Enlarged structural diagram at point A in the middle.

[0024] In the diagram: 1. Bed frame; 2. Lower airbag; 3. Right side airbag; 4. Waist airbag; 5. Support airbag; 6. Left side airbag; 7. Upper airbag; 8. First inflation tube; 9. Inflation pump; 10. Inlet tube; 11. Pressure gauge; 12. Air tank; 13. Deflator valve; 14. Second inflation tube; 15. Sixth inflation tube; 16. Third inflation tube; 17. Third solenoid valve; 18. Fourth solenoid valve; 19. First solenoid valve; 20. Second solenoid valve; 21. PLC controller; 22. Mounting compartment; 23. Fifth solenoid valve; 24. Sixth solenoid valve; 25. Support airbag; 26. Fifth inflation tube; 27. Electric heating block; 28. Temperature sensor. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Reference Figure 1-5 A multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers includes a bed frame 1, an installation chamber 22 at the bottom of the bed frame 1, a support airbag 25 fixed inside the installation chamber 22, an upper airbag assembly, a lower airbag assembly, a left airbag assembly, and a right airbag assembly fixed at the top of the bed frame 1, a lumbar airbag assembly in the middle of the bed frame 1, an air box 12 on the outside of the bed frame 1, an inflation component installed on the outer wall of the air box 12, a constant-temperature heating component inside the air box 12, and a PLC controller 21 (model: S7-200SMART) at the top corner of the bed frame 1.

[0027] The upper air cushion assembly includes an upper airbag 7, and a first inflation tube 8 is connected to the side wall of the upper airbag 7. One end of the first inflation tube 8 is connected to one side of the air box 12.

[0028] The lower air cushion assembly includes a lower airbag 2, and a second inflation tube 14 is connected to the side wall of the lower airbag 2. One end of the second inflation tube 14 is connected to one side of the air box 12.

[0029] The left air cushion assembly includes a left airbag 6, and a third inflation tube 16 is connected to the side wall of the left airbag 6. One end of the third inflation tube 16 is connected to one side of the air box 12.

[0030] The right air cushion assembly includes a right airbag 3, and a fourth inflation tube 5 is connected to the side wall of the left airbag 3. One end of the fourth inflation tube 5 is connected to one side of the air box 12.

[0031] The waist air cushion assembly includes a waist airbag 4, with a fifth inflation tube 26 connected to the bottom of the waist airbag 4, and one end of the fifth inflation tube 26 connected to one side of the air box 12.

[0032] A first solenoid valve 19 is installed on the first inflation tube 8, a second solenoid valve 20 is installed on the second inflation tube 14, a third solenoid valve 17 is installed on the third inflation tube 16, a fourth solenoid valve 18 is installed on the fourth inflation tube 5, and a fifth solenoid valve 23 is installed on the fifth inflation tube 26. The side walls of the upper airbag 7, lower airbag 2, left airbag 6, and right airbag 3 are all provided with deflation nozzles. The side wall of the supporting airbag 25 is connected to a sixth inflation tube 15. One end of the sixth inflation tube 15 is connected to the side wall of the air box 12, and a sixth solenoid valve 24 is installed on the sixth inflation tube 15.

[0033] The inflation assembly includes an air pump 9 installed on the outer wall of the air box 12. The air pump 9 has an air outlet valve on its nozzle. An air inlet pipe 10 is installed on the air outlet valve and is connected to the air box 12. A pressure gauge 11 is installed on the top of the air box 12 and a deflation valve 13 is provided on the air box 12.

[0034] The constant temperature heating component includes an electric heating block 27 fixed to the inner wall of the bottom end of the air box 12. A temperature sensor 28 (model: PT100) is installed on the inner wall of one side of the air box 12. Both the temperature sensor 28 and the electric heating block 27 are electrically connected to the PLC controller 21.

[0035] The air pump 9 is used to inflate the air box 12. The gas in the air box 12 enters each airbag through each inflation tube. The electric heating block 27 heats the air in the air box 12, thereby ensuring that each airbag is kept at a constant temperature. Temperature sensor 28 detects the temperature in air chamber 12 and transmits the temperature data to PLC controller 21. PLC controller 21 controls the electric heating block 27 to turn on or off until the temperature in air chamber 12 reaches the preset temperature value.

[0036] Example 1: A control method for a multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers, comprising the following steps: Step (1): Equipment initialization, PLC controller 21 self-tests the communication status of each electrical component, temperature sensor and pressure gauge 11 collect initial data and transmit it to PLC controller 21; Step (2): Parameter setting, preset the target temperature range (25℃-40℃) and pressure threshold (0.5-1.5MPa) through PLC controller 21. Step (3): Dynamic operation, PLC controller 21 drives each module to work together to achieve pressure balance and constant temperature control; Step (4): Real-time adjustment. When the patient’s left limb is uncomfortable, the third solenoid valve 17 is closed by controlling the PLC controller 21 and the air release nozzle of the left airbag 6 is opened to release the air from the left airbag 6. After the air pressure of the left airbag 6 decreases, the pressure on the patient’s affected area is reduced until the patient feels comfortable, and then the air release nozzle of the left airbag 6 is closed.

[0037] Example 2, a control method for a multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers, includes the following steps: Step (1): Equipment initialization, PLC controller 21 self-tests the communication status of each electrical component, temperature sensor and pressure gauge 11 collect initial data and transmit it to PLC controller 21; Step (2): Parameter setting: preset the target temperature range of 25℃-40℃ and the pressure threshold of 0.5 MPa-1.5 MPa through PLC controller 21; Step (3): Dynamic operation, PLC controller 21 drives each module to work together to achieve pressure balance and constant temperature control; Step (4): Real-time adjustment. When the patient’s upper body is uncomfortable, the first solenoid valve 19 is closed by controlling the PLC controller 21 and the upper airbag 7’s air release nozzle is opened to release the air from the upper airbag 7. After the air pressure of the upper airbag 7 decreases, the pressure on the patient’s affected area is reduced until the patient feels comfortable, and then the upper airbag 7’s air release nozzle is closed.

[0038] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers, comprising a bed frame (1), characterized in that, The bottom end of the bed frame (1) is provided with an installation compartment (22), and a support airbag (25) is fixed inside the installation compartment (22). The top end of the bed frame (1) is fixed with an upper air cushion group, a lower air cushion group, a left air cushion group and a right air cushion group, and a waist air cushion group is provided in the middle of the bed frame (1). An air box (12) is provided on the outside of the bed frame (1). An inflation component is installed on the outer wall of the air box (12). A constant temperature heating component is provided inside the air box (12). A PLC controller (21) is provided at the top corner of the bed frame (1).

2. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 1, characterized in that, The upper air cushion assembly includes an upper airbag (7), and a first inflation tube (8) is connected to the side wall of the upper airbag (7). One end of the first inflation tube (8) is connected to one side of the air box (12).

3. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 2, characterized in that, The lower air cushion assembly includes a lower airbag (2), and a second inflation tube (14) is connected to the side wall of the lower airbag (2). One end of the second inflation tube (14) is connected to one side of the air box (12).

4. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 3, characterized in that, The left air cushion assembly includes a left airbag (6), and a third inflation tube (16) is connected to the side wall of the left airbag (6). One end of the third inflation tube (16) is connected to one side of the air box (12).

5. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 4, characterized in that, The right air cushion assembly includes a right airbag (3), and the side wall of the left airbag (3) is connected to a fourth inflation tube (5), one end of which is connected to one side of the air box (12).

6. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 5, characterized in that, The waist air cushion assembly includes a waist airbag (4), the bottom of which is connected to a fifth inflation tube (26), one end of which is connected to one side of the air box (12).

7. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 6, characterized in that, A first solenoid valve (19) is installed on the first inflation tube (8), a second solenoid valve (20) is installed on the second inflation tube (14), a third solenoid valve (17) is installed on the third inflation tube (16), a fourth solenoid valve (18) is installed on the fourth inflation tube (5), and a fifth solenoid valve (23) is installed on the fifth inflation tube (26). The side walls of the upper airbag (7), lower airbag (2), left airbag (6), and right airbag (3) are all provided with air release nozzles. The side wall of the supporting airbag (25) is connected to a sixth inflation tube (15). One end of the sixth inflation tube (15) is connected to the side wall of the air box (12). A sixth solenoid valve (24) is installed on the sixth inflation tube (15).

8. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 7, characterized in that, The inflation assembly includes an inflation pump (9) installed on the outer wall of the air box (12). The inflation pump (9) has an air outlet valve on its nozzle and an air inlet pipe (10) installed on the air outlet valve. The air inlet pipe (10) is connected to the air box (12). A pressure gauge (11) is installed on the top of the air box (12). The air box (12) is equipped with a vent valve (13).

9. The multifunctional constant-temperature air mattress for preventing deep vein thrombosis and pressure ulcers according to claim 8, characterized in that, The constant temperature heating assembly includes an electric heating block (27) fixed to the inner wall of the bottom end of the air box (12). A temperature sensor (28) is installed on one side of the inner wall of the air box (12). The temperature sensor (28) and the electric heating block (27) are both electrically connected to the PLC controller (21).

10. A control method for an air mattress based on any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Equipment initialization, PLC controller (21) self-tests and communicates with each electrical component, temperature sensor and pressure gauge (11) collect initial data and transmit it to PLC controller (21). Step 2: Parameter setting, preset the target temperature range and pressure threshold through the PLC controller (21); Step 3: Dynamic operation, the PLC controller (21) drives each module to work together to achieve pressure balance and constant temperature control; Step 4: Real-time adjustment. Based on the patient's position, control a certain solenoid valve to close through the PLC controller (21) and open the air release nozzle of the airbag connected to the inflation tube where the solenoid valve is located to release the airbag. After the air pressure of the airbag decreases, the pressure on the patient's affected area is reduced until the patient feels comfortable, and then the air release nozzle of the airbag is closed.

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