Rehabilitation bed special for orthopedics department and capable of adjusting elbow supporting angle

Abstract

The invention relates to the technical field of rehabilitation beds for orthopedics, in particular to a rehabilitation bed special for orthopedics and capable of adjusting an elbow supporting angle, which comprises a bed board, fixing seats are mounted on two sides of the bed board, one end of each fixing seat is connected with a first guide pipe, and the outer side of each first guide pipe is communicated with an air pump. A first supporting seat is connected to the end, away from the bed plate, of the first guide pipe, a first air bag is installed in the first supporting seat, and a fixing plate sleeves the outer side of the first guide pipe. After the first supporting seat and the first air bag ascend, friction force can be formed between rubber protruding points and the surface of the arm of the patient, and the arm of the patient is prevented from slipping off after being lifted; through reciprocating lifting of the arm, the arm and the shoulder joint can be actively moved, joint stiffness caused by long-time immobility of a patient is prevented, postoperative rehabilitation is assisted, meanwhile, the long-time drooping state of the arm is prevented, compression on blood vessels is reduced, blood flow blocking is effectively prevented, and the risks of swelling, thrombus and the like are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of orthopedic rehabilitation beds, in particular to an orthopedic special rehabilitation bed capable of adjusting the hand elbow support angle. BACKGROUND

[0002] In orthopedic clinical treatment, patients with arm fracture, rotator cuff injury, elbow joint postoperative and the like often need to be in bed for a long time or keep a specific body position for rehabilitation, and the functional disorders and nursing pain points existing in the process directly promote the technical research and development of the orthopedic special rehabilitation bed capable of adjusting the hand elbow support angle. When the traditional device is used in the early postoperative period, the hand elbow angle needs to be fixed to promote bone healing, but long-term fixation can cause arm muscle atrophy and joint stiffness, thereby causing joint range of motion to decrease, and long-term inactivity of the arm can cause poor blood circulation of the arm, thereby increasing the risks of swelling and thrombosis and the like. SUMMARY

[0003] After the first support seat and the first air bag are raised, the rubber convex points form a friction force with the surface of the patient's arm, so that the patient's arm is prevented from falling after being lifted, and the arm and shoulder joints can be actively moved through reciprocating lifting of the arm, joint stiffness caused by long-term inactivity of the patient is prevented, postoperative rehabilitation is assisted, the state of long-time hanging of the arm is prevented, the compression on blood vessels is reduced, blood flow is effectively prevented from being blocked, and the risks of swelling and thrombosis and the like are reduced.

[0004] To achieve the above object, the application provides the following technical scheme: an orthopedic special rehabilitation bed capable of adjusting the hand elbow support angle, comprising a bed plate, fixed seats are installed on both sides of the bed plate, first guide pipes are connected to one end of the two groups of fixed seats, air pumps are communicated outside the first guide pipes, first support seats are connected to the end, away from the bed plate, of the first guide pipes, and first air bags are installed in the first support seats; fixed plates are sleeved outside the first guide pipes, second guide pipes are slidably arranged on the upper surfaces of the fixed plates, the second guide pipes are communicated with the first guide pipes, second support seats are connected to one end of the second guide pipes away from the fixed plates, second air bags are installed in the second support seats, the second guide pipes are communicated with the second air bags, a plurality of rubber convex points are arranged on the surfaces of the second air bags and the first air bags, the second air bags are communicated with the first air bags, and pressure relief openings are installed at one end of the first air bags. third connecting pipes are connected to one side of the second guide pipes, stop valves B are arranged in the third connecting pipes, gears are connected to one end of the stop valves, and racks are engaged with the outside of the gears.

[0005] Preferably, one side of the first guide pipe is fixedly connected with a second connecting pipe, a stop valve A is arranged in the second connecting pipe, one end of the stop valve A is fixedly connected with a first valve rod, and the other end of the first valve rod extends to the outside through the second connecting pipe and is connected with a rotating disc.

[0006] Preferably, the first guide pipe is provided with a pressure relief valve on one side, the gas pump is fixedly connected with a first connecting pipe at the output end, and the other end of the first connecting pipe extends to the outside through the fixed plate and the first guide pipe.

[0007] Preferably, a jacking rod is slidably connected in the first guide pipe, the outer diameter of the jacking rod matches the inner diameter of the first guide pipe, a first limiting ring is arranged at one end of the jacking rod, the first limiting ring is fixedly connected with the inner wall of the first guide pipe, and the other end of the jacking rod is connected with a first supporting seat.

[0008] Preferably, a push rod is slidably connected in the second guide pipe, a second limiting ring is fixedly connected with the inner wall of the second guide pipe, and the second limiting ring is located at the lower end of the push rod.

[0009] Preferably, a ball is rotatably connected at one end of the push rod, the push rod is connected with the second supporting seat through the ball, and the ball is rotatably connected with the second supporting seat.

[0010] Preferably, a second valve rod is fixedly connected at one end of the stop valve B, the other end of the second valve rod extends to the outside through a third connecting pipe and is connected with a gear, a rack is fixedly connected with a bed plate, and a protective cover is sleeved on the outer side of the rack.

[0011] Preferably, one end of the second air bag is connected with the second guide pipe through the third connecting pipe, the other end of the second air bag is connected with a hose, and the other end of the hose is connected with the first air bag.

[0012] Preferably, the first supporting seat and the second supporting seat are located in the same plane, the first air bag and the second air bag are located in the same plane, and the rubber convex points are uniformly arranged on the outer surfaces of the first air bag and the second air bag.

[0013] Compared with the prior art, the present application has the following advantages: 1、After the first supporting seat and the first air bag are raised, the rubber convex points form a friction force with the surface of the patient's arm, preventing the patient's arm from slipping after being raised, so that the arm can be actively moved by reciprocating, the arm and shoulder joints can be actively moved, joint stiffness caused by long-term inactivity of the patient can be prevented, postoperative rehabilitation can be assisted, the state of long-term hanging of the arm can be prevented, the pressure on the blood vessels can be reduced, the blood flow can be effectively prevented from being blocked, and the risks of swelling and thrombosis can be reduced.

[0014] 2. This invention provides synchronous massage during forearm rotation, replacing the patient's voluntary movement, maintaining the activity of arm muscles and joints, preventing muscle atrophy or adhesion due to prolonged inactivity, maintaining joint mobility, and reducing stiffness. At the same time, the massage action can help promote local blood circulation in the arm, relieving problems such as slow blood flow and mild swelling caused by prolonged immobility. In addition, through gentle external stimulation, it enhances the sensitivity of the arm skin and muscles, avoiding local sensory dullness caused by long-term lack of activity, and laying the foundation for the subsequent recovery of voluntary movement ability.

[0015] 3. When adjusting the support point of the second support seat, the present invention keeps the air pressure inside the second and first airbags constant, so that the expansion force of the second and first airbags is always moderate. This allows the second and first airbags to generate sufficient force to act on the patient's arm, achieve the expected massage, promote local circulation, and prevent massage failure due to insufficient expansion force. Attached Figure Description

[0016] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is a second schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the first guide tube of the present invention; Figure 4 This is one of the cross-sectional views of the internal structure of the protective cover of the present invention; Figure 5 This is a second cross-sectional view of the internal structure of the protective cover of the present invention; Figure 6 This is a cross-sectional view of the internal structure of the second guide tube of the present invention; Figure 7 This is a partial structural cross-sectional view of the present invention; Figure 8 For the present invention Figure 3 Enlarged view of the structure at point A in the middle.

[0017] In the diagram: 1. Bed board; 2. Fixed seat; 3. First guide tube; 4. First connecting tube; 5. Air pump; 6. First limiting ring; 7. Push rod; 8. First support seat; 9. First airbag; 10. Rubber protrusion; 11. Fixed plate; 12. Second guide tube; 13. Second connecting tube; 14. First valve stem; 15. Turntable; 16. Push rod; 17. Second limiting ring; 18. Second support seat; 19. Second airbag; 20. Third connecting tube; 21. Second valve stem; 22. Gear; 23. Rack; 24. Protective cover; 25. Hoses; 26. Pressure relief port; 27. Pressure relief valve; 28. Ball bearing. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] Reference Figures 1-8 The present invention provides an orthopedic rehabilitation bed with adjustable elbow support angle, including a bed board 1, fixed seats 2 installed on both sides of the bed board 1, a first guide tube 3 connected to one end of each of the two sets of fixed seats 2, an air pump 5 connected to the outside of the first guide tube 3, a first support seat 8 connected to the end of the first guide tube 3 away from the bed board 1, and a first airbag 9 installed inside the first support seat 8. A fixing plate 11 is sleeved on the outside of the first guide tube 3. A second guide tube 12 slides on the upper surface of the fixing plate 11. The second guide tube 12 is connected to the first guide tube 3. One end of the second guide tube 12 is connected to a second support seat 18. A second airbag 19 is installed inside the second support seat 18. The second guide tube 12 is connected to the second airbag 19. Multiple sets of rubber protrusions 10 are provided on the surfaces of the second airbag 19 and the first airbag 9. The second airbag 19 is connected to the first airbag 9. A pressure relief port 26 is installed at one end of the first airbag 9. The second guide tube 12 is connected to a third connecting tube 20 on one side. A stop valve B is installed inside the third connecting tube 20. A gear 22 is connected to one end of the stop valve B. A rack 23 meshes with the outside of the gear 22.

[0020] In an optional embodiment, a second connecting pipe 13 is fixedly connected to one side of the first guide pipe 3. A shut-off valve A is provided inside the second connecting pipe 13. A first valve stem 14 is fixedly connected to one end of the shut-off valve A. The other end of the first valve stem 14 extends through the second connecting pipe 13 to the outside and is connected to a turntable 15. Before using the device, medical staff can rotate the turntable 15 to drive the first valve stem 14 to rotate. When the first valve stem 14 rotates, it will synchronously drive the shut-off valve A inside the second connecting pipe 13 to rotate. Thus, medical staff can control the closure inside the second connecting pipe 13 by rotating the shut-off valve A.

[0021] In an optional embodiment, a pressure relief valve 27 is provided on one side of the first guide tube 3, and the output end of the air pump 5 is fixedly connected to the first connecting tube 4. The other end of the first connecting tube 4 passes through the fixing plate 11 and extends into the first guide tube 3. The pressure relief valve 27 is initially closed. When using the device, the medical staff places the patient's elbow on the upper end of the first airbag 9. As mentioned above, when the shut-off valve A is closed inside the second connecting tube 13, the medical staff starts the air pump 5. After the air pump 5 is started, the air pump 5 will deliver gas into the first guide tube 3 through the first connecting tube 4.

[0022] In an optional embodiment, a push rod 7 is slidably connected inside the first guide tube 3. The outer diameter of the push rod 7 matches the inner diameter of the first guide tube 3. A first limiting ring 6 is provided at one end of the push rod 7, and the outer side of the first limiting ring 6 is fixedly connected to the inner wall of the first guide tube 3. The other end of the push rod 7 is connected to the first support seat 8. As described above, after the gas enters the first guide tube 3, the pressure relief valve 27 is closed at this time, and the second connecting tube 13 is closed through the shut-off valve A. Therefore, the gas will form air pressure after entering the first guide tube 3. Since the air pump 5 has a small air intake into the first guide tube 3, as the air pressure inside the first guide tube 3 gradually increases, it will push the push rod 7 outward in a slow upward state. When the push rod 7 is pushed outward, it will simultaneously push the first support seat 8 and the first airbag 9 upward. When the first airbag 9 rises, it will simultaneously drive the patient's arm to rise. Medical staff control the release of air pressure inside the first guide tube 3 by rotating the pressure relief valve 27. As the air inside the first guide tube 3 gradually releases, the push rod 7 will gradually descend as the air pressure inside the first guide tube 3 releases. When the push rod 7 descends, it will simultaneously drive the patient's arm down. This process is repeated to lift the patient's arm up and down, promoting the movement of the patient's arm and shoulder joints and preventing prolonged hanging from obstructing blood flow in the arm. After the first support seat 8 and the first airbag 9 rise, the rubber protrusions 10 will form friction with the surface of the patient's arm to prevent the patient's arm from slipping after being raised. Thus, by lifting the arm back and forth, the arm and shoulder joints can be actively moved, preventing joint stiffness caused by prolonged immobility and aiding postoperative recovery. At the same time, it prevents the arm from hanging down for a long time, reduces pressure on blood vessels, effectively prevents blood flow obstruction, and reduces the risk of swelling and thrombosis. Furthermore, when using the device, medical staff can control the rise of the push rod 7 by controlling the amount of gas inside the first guide tube 3, thereby controlling the initial height of the first support seat 8 and the first airbag 9. During patient use, the height of the first support seat 8 and the first airbag 9 can be flexibly controlled by the air pump 5 to inflate the first guide tube 3 and the pressure relief valve 27 to release pressure. Thus, patients can freely adjust the support height of the first support seat 8 and the first airbag 9 for their elbows during use.

[0023] In an optional embodiment, a push rod 16 is slidably connected inside the second guide tube 12, and a second limiting ring 17 is fixedly connected to the inner wall of the second guide tube 12. The second limiting ring 17 is located at the lower end of the push rod 16, and the outer diameter of the push rod 16 matches the outer diameter of the second guide tube 12. When there is no air pressure inside the first guide tube 3, the first support seat 8 will be limited by the first limiting ring 6, so that it cannot descend, preventing the first support seat 8 from blocking the output end of the first connecting pipe 4 after descending, thereby preventing gas from entering the interior of the first guide tube 3.

[0024] In an optional embodiment, a ball bearing 28 is rotatably connected to one end of the push rod 16. The push rod 16 is connected to the second support base 18 via the ball bearing 28, and the ball bearing 28 is rotatably connected to the second support base 18. When using the device, the patient's forearm is placed inside the second support base 18. As described above, when using the device, if the medical staff opens the shut-off valve A inside the second connecting pipe 13 and the pressure relief valve 27 is not opened, the gas entering the first guide pipe 3 will enter the second connecting pipe 13. The second connecting pipe 13 will transport the gas to the second guide pipe 12. After the gas enters the second guide pipe 12, it will be transported to the second guide pipe 12. 2. An internal air pressure is generated, which pushes the push rod 16 upward. When the push rod 16 rises, it simultaneously pushes the second support seat 18 upward. When the second support seat 18 rises, it simultaneously pushes the patient's forearm to rotate. Since the second support seat 18 and the push rod 16 are connected by a ball bearing 28, when the second support seat 18 rises, it will rotate synchronously according to the rotation of the patient's arm. After the patient's arm is lifted by the second support seat 18, the medical staff will turn off the air pump 5. As the gas gradually flows out, the push rod 16 will drive the second support seat 18 to gradually descend. This process is repeated to make the patient's forearm rotate back and forth, thereby promoting recovery. According to the lever principle, when the patient places their elbow and forearm inside the second support seat 18 and the first support seat 8, the force borne by the support point further back is greater than that borne by the support point further forward. As a result, after the gas enters the second guide tube 12, the first support seat 8 supporting the patient's elbow is further back, and thus the force borne by the first support seat 8 is greater, making it unable to rise. Furthermore, because the support point of the second support seat 18 is further forward, the push rod 16 can easily lift the patient's forearm.

[0025] In an optional embodiment, a second valve stem 21 is fixedly connected to one end of the shut-off valve B, and the other end of the second valve stem 21 extends through the third connecting pipe 20 to the outside and connects to the gear 22. The rack 23 is fixedly connected to the bed plate 1, and a protective cover 24 is sleeved on the outside of the rack 23. In special circumstances, when the patient needs to avoid a certain part of the forearm, the second guide tube 12 can be slid on the surface of the fixing plate 11 to move the position of the second guide tube 12 and the second support seat 18. When the second guide tube 12 moves, it will drive the third connecting tube 20 to move simultaneously. When the third connecting tube 20 moves, it will drive the gear 22 to move simultaneously through the second valve stem 21. When the gear 22 moves, it will contact the rack 23, so the gear 22 will rotate through the rack 23. When the gear 22 rotates, it will drive the second valve stem 21 to rotate simultaneously. When the second valve stem 21 rotates, it will rotate the shut-off valve B inside the third connecting tube 20 simultaneously. The closer the second guide tube 12 is to the first guide tube 3, the smaller the shut-off valve B opens. Conversely, when the shut-off valve B is away from the first guide tube 3, the larger the shut-off valve B opens inside the third connecting tube 20.

[0026] In an optional embodiment, one end of the second airbag 19 is connected to the second guide tube 12 via a third connecting tube 20, and the other end of the second airbag 19 is connected to a hose 25. The other end of the hose 25 is connected to the first airbag 9. As mentioned above, the initial amount of gas delivered by the third connecting tube 20 is less than the gas supply of the air pump 5. As a result, after the gas enters the push rod 16, it will slowly push the push rod 16 upward. At the same time, some gas will enter the third connecting tube 20. After the gas enters the third connecting tube 20, it will enter the second airbag 19 through the third connecting tube 20. The gas entering the second airbag 19 will enter the first airbag 9 through the hose 25. When the gas enters the second airbag 19 and the first airbag 9, it will cause the second airbag 19 and the first airbag 9 to inflate. After the gas enters the first airbag 9, it will be discharged outward through the pressure relief valve 27.

[0027] In an optional embodiment, the first support base 8 and the second support base 18 are located on the same plane, and the first airbag 9 and the second airbag 19 are located on the same plane. Rubber protrusions 10 are evenly arranged on the outer surfaces of the first airbag 9 and the second airbag 19. As described above, when the second airbag 19 and the first airbag 9 inflate, they will push the rubber protrusions 10 to squeeze the patient's arm, thereby massaging the patient's arm. At this time, the second support base 18 rises and pushes the patient's forearm to rotate. When the patient's forearm rotates, the expansion of the second airbag 19 and the first airbag 9 will massage the patient's arm. At the same time, when the patient's forearm descends, the weight of the arm will squeeze the second support base 18 to descend. When the second support base 18 descends, it will push the push rod 16 into the interior of the second guide tube 12. This pushes the air pressure inside the second guide tube 12 into the second airbag 19 and the first airbag 9, causing the second airbag 19 and the first airbag 9 to inflate again. This prevents the patient's arm from stiffening due to inability to move independently. By simultaneously massaging the forearm during rotation, it replaces the patient's independent movement, maintains the activity of arm muscles and joints, prevents muscle atrophy or adhesion due to prolonged inactivity, maintains joint mobility, and reduces the occurrence of stiffness. At the same time, the massage action can help promote local blood circulation in the arm, relieve problems such as slow blood flow and slight swelling caused by prolonged inactivity. In addition, through gentle external stimulation, it enhances the sensitivity of the arm skin and muscles, avoids local sensory dullness caused by long-term lack of activity, and lays the foundation for the subsequent recovery of independent movement ability. Furthermore, when adjusting the support point of the second support seat 18, according to the lever principle, the further back the support point of the second support seat 18 is, the greater the downward pressure exerted on the second support seat 18 by the forearm during descent. This results in the gas inside the second guide tube 12 rapidly entering the second airbag 19 and the first airbag 9 during the rapid descent of the push rod 16, leading to greater expansion force in the second airbag 19 and the first airbag 9, causing excessive compression and discomfort to the patient. Conversely, the further forward the support point of the second support seat 18 is, the less downward pressure exerted on the second support seat 18 during descent. This results in a lower flow rate of compressed gas entering the second airbag 19 and the first airbag 9 during the descent of the push rod 16. The smaller the pressure, the less the expansion force of the second airbag 19 and the first airbag 9, resulting in insufficient massage effect on the patient's arm. Consequently, the further back the support point of the second support seat 18 is, the smaller the opening of the shut-off valve B inside the third connecting pipe 20. Conversely, the further forward the support point of the second support seat 18 is, the larger the opening of the shut-off valve B inside the third connecting pipe 20. This ensures that the air pressure entering the second airbag 19 and the first airbag 9 remains constant, thus maintaining a moderate expansion force. This allows the second airbag 19 and the first airbag 9 to generate sufficient force to act on the patient's arm, achieving the desired massage effect, promoting local circulation, and preventing massage failure due to insufficient expansion force.

[0028] Working principle: Before using the device, medical staff can rotate the turntable 15 to drive the first valve stem 14 to rotate. When the first valve stem 14 rotates, it will synchronously drive the shut-off valve A inside the second connecting pipe 13 to rotate. Thus, the medical staff can control the closure inside the second connecting pipe 13 by rotating the shut-off valve A. When using the device, medical staff place the patient's elbow on the upper end of the first airbag 9. As mentioned above, when the shut-off valve A is closed inside the second connecting pipe 13, the medical staff starts the air pump 5. After the air pump 5 is started, it will deliver gas into the first guide pipe 3 through the first connecting pipe 4. After the gas enters the first guide pipe 3, because the pressure relief valve 27 is closed at this time, and the second connecting pipe 13 is closed through the shut-off valve A, the gas will form pressure inside the first guide pipe 3. Since the air pump 5 enters the first guide pipe 3 with a small amount of air, as the air pressure inside the first guide pipe 3 gradually increases, it will push the push rod 7 outward in a slow upward state. When the push rod 7 is pushed outward, it will push the push rod outward simultaneously. The first support seat 8 and the first airbag 9 rise. When the first airbag 9 rises, it will simultaneously drive the patient's arm to rise. At this time, the medical staff will control the air pressure inside the first guide tube 3 to be released by rotating the pressure relief valve 27. As the gas inside the first guide tube 3 is gradually released, the push rod 7 will gradually descend as the air pressure inside the first guide tube 3 is released. When the push rod 7 descends, it will simultaneously drive the patient's arm to descend. This process is repeated to lift the patient's arm up and down, promote the movement of the patient's arm and shoulder joints, and prevent the arm from being hung down for a long time, thus hindering blood flow. After the first support seat 8 and the first airbag 9 rise, the rubber protrusion 10 will form friction with the surface of the patient's arm to prevent the patient's arm from slipping after being raised. Furthermore, when using the device, medical staff can control the rise of the push rod 7 by controlling the amount of gas inside the first guide tube 3, thereby controlling the initial height of the first support seat 8 and the first airbag 9. During patient use, the height of the first support seat 8 and the first airbag 9 can be flexibly controlled by the air pump 5 to inflate the first guide tube 3 and the pressure relief valve 27 to release pressure. Thus, patients can freely adjust the support height of the first support seat 8 and the first airbag 9 for their elbows during use. If medical staff open the shut-off valve A inside the second connecting tube 13 and the pressure relief valve 27 is not opened, the gas entering the first guide tube 3 will enter the second connecting tube 13. The second connecting tube 13 will deliver the gas to the second guide tube 12. After the gas enters the second guide tube 12, it will create air pressure inside the second guide tube 12, thereby pushing the push rod 16 to rise. When the push rod 16 rises, it will simultaneously push the second support seat 18 to rise. When the second support seat 18 rises, it will simultaneously push the patient's forearm to rotate. After the patient's arm is lifted by the second support seat 18, the medical staff will turn off the air pump 5. As the gas gradually leaks out, the push rod 16 will drive the second support seat 18 to gradually descend, and so on, causing the patient's forearm to rotate back and forth. The initial gas supply from the third connecting pipe 20 is less than the gas supply from the air pump 5. Therefore, after the gas enters the push rod 16, it slowly pushes the push rod 16 upwards. Simultaneously, some gas enters the third connecting pipe 20. After entering the third connecting pipe 20, the gas flows through it into the second airbag 19. The gas entering the second airbag 19 then flows through the hose 25 into the first airbag 9. When the gas enters both the second and first airbags, it causes them to inflate. The gas expands and, after entering the first airbag 9, it is discharged outward through the pressure relief valve 27. When using the device, medical staff can control the rise of the push rod 7 through the amount of gas inside the first guide tube 3, thereby controlling the initial height of the first support seat 8 and the first airbag 9. During patient use, the height of the first support seat 8 and the first airbag 9 can be flexibly controlled by the air pump 5 to inflate the first guide tube 3 and the pressure relief valve 27 to release the pressure. Thus, the patient can freely adjust the support height of the first support seat 8 and the first airbag 9 for the elbow during use. When the second airbag 19 and the first airbag 9 inflate, they push the rubber protrusions 10 to squeeze the patient's arm, thereby massaging the patient's arm. At the same time, the second support seat 18 rises and pushes the patient's forearm to rotate. When the patient's forearm rotates, the expansion of the second airbag 19 and the first airbag 9 will massage the patient's arm. At the same time, when the patient's forearm descends, the weight of the arm will squeeze the second support seat 18 to descend. When the second support seat 18 descends, it will push the push rod 16 to move downward inside the second guide tube 12, thereby pushing the air pressure inside the second guide tube 12 into the second airbag 19 and the first airbag 9, thereby causing the second airbag 19 and the first airbag 9 to inflate again, thereby repeatedly massaging the patient's arm and preventing the patient from being unable to move independently, which would cause the arm to stiffen. In special circumstances, when the patient needs to avoid a certain part of the forearm, the second guide tube 12 can be slid on the surface of the fixing plate 11 to move the position of the second guide tube 12 and the second support seat 18. When the second guide tube 12 moves, it will drive the third connecting tube 20 to move simultaneously. When the third connecting tube 20 moves, it will drive the gear 22 to move simultaneously through the second valve stem 21. When the gear 22 moves, it will contact the rack 23, so the gear 22 will rotate through the rack 23. When the gear 22 rotates, it will drive the second valve stem 21 to rotate simultaneously. When the second valve stem 21 rotates, it will rotate the shut-off valve B inside the third connecting tube 20 simultaneously. The closer the second guide tube 12 is to the first guide tube 3, the smaller the shut-off valve B is opened. Conversely, when the shut-off valve B is far away from the first guide tube 3, the larger the shut-off valve B is opened inside the third connecting tube 20. When the support point of the second support seat 18 is further back, the downward pressure exerted on the second support seat 18 by the forearm during descent will be greater. This will cause the gas inside the second guide tube 12 to rapidly enter the second airbag 19 and the first airbag 9 during the rapid descent of the push rod 16, resulting in greater expansion force in the second airbag 19 and the first airbag 9, causing excessive compression and discomfort to the patient. Conversely, when the support point of the second support seat 18 is further forward, the downward pressure exerted on the second support seat 18 by the forearm during descent will be less, thus... When the push rod 16 descends, the flow rate of the compressed gas entering the second airbag 19 and the first airbag 9 is relatively low, resulting in a smaller expansion force of the second airbag 19 and the first airbag 9, which cannot provide a massage effect on the patient's arm. Consequently, the further back the support point of the second support seat 18 is, the smaller the opening of the shut-off valve B inside the third connecting pipe 20 is. Conversely, the further forward the support point of the second support seat 18 is, the larger the opening of the shut-off valve B inside the third connecting pipe 20 is, thus keeping the amount of air pressure entering the second airbag 19 and the first airbag 9 constant.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable orthopedic rehabilitation bed for supporting the angle of the elbow, comprising a bed board (1), characterized in that: Both sides of the bed board (1) are provided with fixed seats (2), one end of the two groups of fixed seats (2) is connected with first guide pipes (3), the outer side of the first guide pipe (3) is communicated with an air pump (5), one end of the first guide pipe (3) away from the bed board (1) is connected with a first support seat (8), and the first support seat (8) is internally provided with a first air bag (9). The outer side of the first guide pipe (3) is sleeved with a fixed plate (11), the upper surface of the fixed plate (11) is slidably provided with a second guide pipe (12), the second guide pipe (12) is communicated with the first guide pipe (3), one end of the second guide pipe (12) away from the fixed plate (11) is connected with a second support seat (18), the second support seat (18) is internally provided with a second air bag (19), the second guide pipe (12) is communicated with the second air bag (19), a plurality of rubber convex points (10) are arranged on the surfaces of the second air bag (19) and the first air bag (9), the second air bag (19) is communicated with the first air bag (9), and one end of the first air bag (9) is provided with a pressure relief port (26). One side of the second guide pipe (12) is connected with a third connecting pipe (20), the third connecting pipe (20) is internally provided with a stop valve B, one end of the stop valve is connected with a gear (22), and the outer side of the gear (22) is meshed with a rack (23).

2. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, One side of the first guide pipe (3) is fixedly connected with a second connecting pipe (13), the second connecting pipe (13) is internally provided with a stop valve A, one end of the stop valve A is fixedly connected with a first valve rod (14), and the other end of the first valve rod (14) extends to the outside of the second connecting pipe (13) and is connected with a rotating disc (15).

3. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 2, wherein, One side of the first guide pipe (3) is provided with a pressure relief valve (27), the output end of the air pump (5) is fixedly connected with a first connecting pipe (4), the other end of the first connecting pipe (4) extends to the inside of the first guide pipe (3) through the fixed plate (11) and the first guide pipe (3).

4. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, The first guide pipe (3) is internally and slidably connected with a jacking rod (7), the outer diameter of the jacking rod (7) matches the inner diameter of the first guide pipe (3), one end of the jacking rod (7) is provided with a first limiting ring (6), the outer side of the first limiting ring (6) is fixedly connected with the inner wall of the first guide pipe (3), and the other end of the jacking rod (7) is connected with the first support seat (8).

5. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, The second guide pipe (12) is internally and slidably connected with a push rod (16), the inner wall of the second guide pipe (12) is fixedly connected with a second limiting ring (17), the second limiting ring (17) is located at the lower end of the push rod (16), and the outer diameter of the push rod (16) matches the outer diameter of the second guide pipe (12).

6. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 5, wherein, One end of the push rod (16) is rotatably connected with a ball (28), the push rod (16) is connected with the second support seat (18) through the ball (28), and the ball (28) is rotatably connected with the second support seat (18).

7. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, One end of the stop valve B is fixedly connected with a second valve rod (21), the other end of the second valve rod (21) extends to the outside through the third connecting pipe (20) and is connected with a gear (22), and the rack (23) is fixedly connected with the bed board (1), and a protective cover (24) is sleeved on the outside of the rack (23).

8. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, One end of the second air bag (19) is connected with the second guide pipe (12) through the third connecting pipe (20), and the other end of the second air bag (19) is connected with a hose (25), and the other end of the hose (25) is connected with the first air bag (9).

9. The adjustable elbow support angle orthopedic rehabilitation bed as claimed in claim 1, wherein, The first support seat (8) and the second support seat (18) are located in the same plane, and the first air bag (9) and the second air bag (19) are located in the same plane, and the rubber convex points (10) are uniformly arranged on the outer surfaces of the first air bag (9) and the second air bag (19).

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