Spinal malformation correction traction rehabilitation device and rehabilitation method thereof

Abstract

The invention belongs to the technical field of spine correction, and particularly relates to a spine malformation correction traction rehabilitation device and a rehabilitation method thereof. The device aims at solving the problems that existing traction equipment is prone to causing soft tissue injury due to the fact that rigid transmission lacks mechanical buffering, and a passive safety mechanism loses efficacy during power failure. The device comprises two brackets and a rotating shaft, wherein a frame body I and an upper bed plate are arranged on the shaft; a lower bed plate and a traction part are arranged on the frame body II. The traction part adopts an elastic floating transmission design, a screw rod drives a lower bed plate through a T-shaped block and a spring assembly, and impact is absorbed by utilizing elastic deformation when traction force suddenly changes; meanwhile, a mechanical unlocking part is integrated, so that the patient can trigger a cam mechanism through foot actions under emergency conditions such as power failure, threaded connection between a nut and a screw rod is relieved, and active resetting is achieved. The device not only can adjust the angle of the upper body, but also can provide safe traction with flexible buffer protection, and ensures treatment safety.

Description

Technical Field

[0001] This invention relates to the field of spinal correction technology, and more particularly to a spinal deformity correction traction rehabilitation device and its rehabilitation method. Background Technology

[0002] Correction of spinal deformities (such as scoliosis and kyphosis) typically relies on traction therapy. However, existing spinal correction traction devices face the following technical challenges in practical clinical applications: 1. Existing motor-screw traction systems mostly employ a "rigid connection" transmission method, meaning the motor's rotation angle strictly corresponds to the bed board's displacement (displacement control mode). However, the muscles and ligaments surrounding the human spine possess complex viscoelasticity, and patients are highly susceptible to involuntary muscle spasms (resistive contractions) during traction due to pain or psychological stress. In rigid connection mode, once the patient resists, the rigid drive system cannot sense and absorb this change in resistance, leading to a sudden and rapid spike in traction force. This unbuffered, forced stretching can easily cause soft tissue tears or even secondary spinal injury.

[0003] 2. Traditional electric traction beds heavily rely on the power system for operation and reset. In the event of a power outage or control system malfunction, the screw's self-locking characteristic causes the device to lock, forcing the patient to remain in a state of extreme traction for an extended period. At this time, the patient not only faces continuous physical stretching injury but also experiences intense psychological panic. This psychological tension further exacerbates muscle stiffness, making subsequent rescue and reset even more difficult. Existing backup power solutions are merely passive defenses, failing to address the problem of control logic failure and lacking an active escape mechanism that allows the patient to instantly disconnect the mechanical connection in an emergency.

[0004] 3. The midline of force application in patients with spinal deformities is often non-linear. Existing devices are mostly planar linear traction devices, which cannot dynamically adjust the compensatory angle of the upper body according to the stretching changes of the spinal curvature during traction. This results in the traction force not being applied precisely to the deformed apex vertebra, affecting the correction efficiency. Summary of the Invention

[0005] During the research and development process, it was discovered that existing traction devices with rigid drives are prone to injuring soft tissues, and passive failure upon power failure can cause panic. To address clinical needs, an elastic floating transmission system was developed: the screw is buffered by a T-block and a spring I. Elastic deformation absorbs sudden forces, conforming to the gradual rehabilitation process, improving comfort (buffering prevents tearing), and foot-triggered unlocking (cam-linked separation of the nut) allows the patient to actively reset the device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The spinal deformity correction traction rehabilitation device includes: Two supports are rotatably connected by the same axis of rotation. Frame I is fixedly sleeved on the outer wall of the rotating shaft, and an upper bed board for supporting the patient's upper body is fixed to the top of the frame I; Frame II, the top of which is slidably connected via a slide rail to a lower bed board for supporting the patient's lower body; An adjustment unit, disposed between the two supports, is used to drive the frame I to rotate around the rotation axis to adjust the tilt angle of the upper bed board. The adjustment unit includes two electric push rods. A traction unit, disposed within the frame II, is used to drive the lower bed plate to move along the frame II for traction. The traction unit includes a screw, a drive motor, and two sets of unlocking units. The drive motor is drivenly connected to the screw. The unlocking units are used to release the traction unit from driving the lower bed plate when the drive motor is de-energized, so that the lower bed plate can be reset and moved. The traction unit is threadedly engaged with a separable nut component via a screw, and the screw is driven to rotate by the drive motor, thereby moving the lower bed plate connected to the nut component; the unlocking unit is used to drive the nut component to separate from the screw when the power is off.

[0007] In one possible design, the adjusting part further includes a fixing rod II fixed between two supports. The outer wall of the fixing rod II is rotatably fitted with two rotating seats. The two electric push rods are respectively fixed on the corresponding rotating seats. The output shaft ends of the two electric push rods are each fixed with a sleeve. The frame I is fixed inside the frame I. The two sleeves are rotatably fitted on the outer wall of the fixing rod I. The electric push rods drive the fixing rod I to move through the sleeves, thereby causing the frame I to rotate around the rotating axis.

[0008] In one possible design, the traction unit further includes two rotating rods rotatably connected within the lower bed plate. The two rotating rods pass through the same T-shaped block. The screw is parallel to the two rotating rods, and the shaft of the screw passes through a through hole on the T-shaped block. The inner diameter of the through hole is larger than the outer diameter of the screw, allowing the screw to rotate freely within it. Two half-nuts are slidably connected to the side of the T-shaped block near the drive motor. The two half-nuts are joined together to form a circular nut that threads with the screw. A pull rod displacement sensor is also fixed inside the frame II. The movable end of the pull rod displacement sensor is connected to the bottom of the lower bed plate via a fixing block.

[0009] After the traction unit is started, the pull rod displacement sensor monitors the displacement of the lower bed board in real time. When the displacement reaches the set value, the drive motor stops automatically. The entire traction process and angle adjustment process can be carried out independently or in conjunction, and there is no motion interference when operating in conjunction.

[0010] In one possible design, the unlocking part includes a vertical rod that slides through the lower bed plate, a movable frame fixed to the bottom end of the vertical rod, and a spring III sleeved on the vertical rod between the movable frame and the bottom of the lower bed plate; a vertical plate is fixed to the bottom of the lower bed plate, one end of the rotating rod passes through the vertical plate and is slidably sleeved on a cam II through a groove and a slider, and the cam II rotates on one side of the vertical plate, and a pin is fixed to one side of the cam II and slidably disposed in the movable frame; a base is fixed to one side of the T-shaped block, a movable rod slides through the base, one end of the movable rod is fixedly connected to the half nut, and the other end is fixed to a tail plate, and a spring II sleeved on the movable rod is provided between the tail plate and the base; a cam I is rotatably connected to one side of the T-shaped block, and the cam I is slidably sleeved on a groove fixed on the rotating rod through a slider on it, so that it can rotate with the rotating rod and slide along its axial direction, and the protrusion of the cam I cooperates with the tail plate; When the drive motor is de-energized, the vertical rod moves upward, causing the moving frame to move upward against the elastic force of the spring III. The pin drives the cam II and the rotating rod to rotate. The rotating rod drives the cam I to rotate to release the push on the tail plate. The half nut separates from the screw under the action of the spring II.

[0011] In one possible design, the top ends of the two vertical rods are fixed with the same pedal, and an arc-shaped plate is fixed to one side of the pedal; a limiting plate is also fixedly fitted on the outer wall of the vertical rod.

[0012] In one possible design, the tail plate has a limiting groove on the side near the rotating rod, and when the cam I engages in the limiting groove, it pushes the tail plate and the half nut to move closer to the screw.

[0013] In one possible design, a pad is fixed to the top of the lower bed board, and two U-shaped seats are fixed to the side of the pad away from the upper bed board. The pad is also provided with straps for binding the lower legs. The straps are adjustable to fit patients with a lower leg circumference of 30-60cm. The lengths of the upper and lower bed boards can be modularly replaced according to clinical needs to improve the versatility of the device.

[0014] In one possible design, pins are fixed on both sides of the frame I, and arc-shaped grooves are provided on the two brackets to slide with the pins; second connecting plates are fixed on both sides of the frame II, and the two second connecting plates are rotatably sleeved on the outer wall of the rotating shaft.

[0015] In one possible design, the bottom of the lower bed board is provided with a sliding groove, the top of the T-shaped block extends into the sliding groove and is slidably connected to the sliding groove, a sliding rod that slides through the T-shaped block is fixed in the sliding groove, and two springs I are sleeved on the outer wall of the sliding rod, with the two springs I located on both sides of the T-shaped block respectively.

[0016] The rehabilitation method using a spinal deformity correction traction rehabilitation device includes the following steps: S1. Patient positioning and fixation: The patient lies flat on the device with the upper body on the upper bed board and the armpits against the support column, and the lower body on the lower bed board. The legs are placed on the pad board and the lower legs are fixed and limited using U-shaped seats and straps. S2. Traction Operation: Start the drive motor to drive the screw to rotate. At this time, the two half nuts are in the closed state and are threaded with the screw. The screw drives the lower bed board to move through the T-block to apply traction to the patient. During the traction process, the spring I set on both sides of the T-block is used to buffer the traction force. S3, Angle Adjustment: Controls the extension and retraction of the electric push rod, which drives the fixed rod I to move through the sleeve, driving the frame I to rotate around the rotating axis, thereby adjusting the tilt angle of the upper bed board; S4. Power failure emergency reset: When the drive motor is powered off and needs to be reset, the arc plate is lifted upward to move the pedal and vertical rod upward, so that the moving frame moves upward against the resistance of spring III; the moving frame drives cam II and rotating rod to rotate through the pin shaft; the rotating rod drives cam I to rotate to release the thrust on the tail plate, the two half nuts are separated under the action of spring II and the threaded engagement with the screw is released, and the lower bed plate is reset under the action of the body retraction force.

[0017] Beneficial Effects: This invention incorporates an elastic buffer assembly consisting of a T-block, a slide bar, and spring I between the screw drive unit and the lower bed plate. This transforms a "rigid connection" into an "elastic connection." During traction, if the patient experiences muscle spasms leading to a sudden increase in resistance, spring I will be preferentially compressed, using elastic deformation to absorb excess displacement of the drive motor. This mechanism transforms potentially harmful "constant displacement" traction into safe "quasi-constant tension" traction, effectively smoothing out peaks and valleys and avoiding damage to the patient's soft tissues caused by mechanical impact.

[0018] This invention utilizes the patient's active lifting motion with their foot to directly disengage the threaded connection between the half-nut and the screw using a cam lever principle. This design bypasses the electrical control system, granting the patient ultimate control in emergency situations. It not only instantly resets the device using the body's natural retraction force in the event of a power outage but also eliminates the patient's panic psychologically and reduces muscle resistance caused by tension.

[0019] In this invention, the adjustable part design allows patients to flexibly adjust the tilt angle of their upper body according to their own needs during traction therapy, thereby effectively improving the traction effect and promoting the correction of spinal deformities. The unlocking part in the traction part is cleverly designed, allowing patients to quickly reset the lower bed board in case of emergencies such as power failure of the drive motor, avoiding treatment interruption or adverse consequences due to equipment failure, and ensuring the safety and continuity of the treatment process. In addition, the device has a reasonable overall structure and is easy to operate, providing a more comprehensive, flexible and safe solution for the corrective treatment of spinal deformities. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the spinal deformity correction traction rehabilitation device provided by the present invention. Figure 2 This is a three-dimensional exploded structural diagram of the frame I, frame II, upper bed board, and lower bed board of the spinal deformity correction traction rehabilitation device provided by the present invention; Figure 3 This is a three-dimensional exploded structural diagram of the support, frame I, and rotating shaft of the spinal deformity correction traction rehabilitation device provided by the present invention. Figure 4 This is a three-dimensional structural diagram of the fixed rod II, fixed rod I, and electric push rod of the spinal deformity correction traction rehabilitation device provided by the present invention; Figure 5 This is a three-dimensional exploded structural diagram of the frame I and the pad of the spinal deformity correction traction rehabilitation device provided by the present invention; Figure 6 This is a three-dimensional structural diagram of the support column, T-block, rotating rod, and screw of the spinal deformity correction traction rehabilitation device provided by the present invention; Figure 7 This is a three-dimensional exploded view of the T-shaped block and the lower bed board of the spinal deformity correction traction rehabilitation device provided by the present invention; Figure 8 This is a three-dimensional exploded structural diagram of the T-shaped block, half nut, vertical rod, and pedal of the spinal deformity correction traction rehabilitation device provided by the present invention. Figure 9 This is a three-dimensional exploded structural diagram of cam I, movable rod and cam II of the spinal deformity correction traction rehabilitation device provided by the present invention.

[0021] In the diagram: 1. Bracket; 2. First connecting plate; 3. Rotating shaft; 4. Frame I; 5. Fixed rod I; 6. Fixed rod II; 7. Rotating seat; 8. Electric push rod; 9. Sleeve; 10. Second connecting plate; 11. Support leg; 12. Frame II; 13. Upper bed board; 14. Lower bed board; 15. Support column; 16. Control panel; 17. Headrest; 18. Pad; 19. U-shaped seat; 20. Strap; 21. Sliding groove; 22. Slide rod; 23. T-block; 24. Spring 25. Spring I; 26. Pull rod displacement sensor; 27. Fixing block; 28. Screw; 29. ​​Drive motor; 30. Rotating rod; 31. Half nut; 32. Base; 33. Movable rod; 34. Spring II; 35. Tail plate; 36. Limiting groove; 37. Cam I; 38. Vertical plate; 39. Cam II; 40. Vertical rod; 41. Moving frame; 42. Pin; 43. Spring III; 44. Limiting plate; 45. Pedal; 46. Arc plate; 47. Pin; 48. Arc groove. Detailed Implementation

[0022] 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.

[0023] In one embodiment: Refer to Figures 1-9 The spinal deformity correction traction rehabilitation device relates to the field of spinal correction technology and includes a support frame 1 component, a bed body component, an adjustment unit, a traction unit, and a control unit. The support frame 1 component provides the supporting foundation for the entire device, the bed body component is used to support the patient, the adjustment unit allows for adjustment of the tilt angle of the patient's upper body, the traction unit performs traction on the patient's lower body, and the control unit enables coordinated control and parameter detection of all components. The components work together to achieve personalized and safe traction rehabilitation treatment for patients with spinal deformities.

[0024] Reference Figure 3The support assembly includes two symmetrically arranged supports 1, which are arranged in parallel and spaced apart. To ensure structural stability, multiple first connecting plates 2 are fixedly connected between the two supports 1. The first connecting plates 2 are fixed to the two supports 1 by bolts or welding, and the number is preferably 2-4, which are evenly distributed along the height direction of the supports 1. The first connecting plates 2 can effectively enhance the connection strength between the two supports 1 and prevent relative displacement or shaking of the supports 1 during the operation of the device. The two supports 1 are rotatably connected by the same rotating shaft 3, and are connected to the supports 1 by bearings to ensure that the rotating shaft 3 can rotate flexibly around its own axis. The outer wall of the rotating shaft 3 is fixedly fitted with a frame body I 4. At the same time, the two sides of the frame body II 12 are fixed with second connecting plates 10. The two second connecting plates 10 are rotatably fitted on the outer wall of the rotating shaft 3. The second connecting plates 10 realize the stability of the frame body II 12 and the support 1, thereby allowing the frame body I 4 to rotate around the rotating shaft 3 as the center, providing a structural basis for the angle adjustment of the bed assembly.

[0025] Reference Figures 1-3 The bottom of frame II 12 is fixed with two support legs 11, which are symmetrically arranged at both ends of the bottom of frame II 12 to support frame II 12. Both sides of frame I 4 are fixed with pins 46. Both brackets 1 are provided with arc grooves 47. The curvature of the arc grooves 47 is adapted to the trajectory of frame I 4 rotating around the rotation axis 3. The two pins 46 are respectively slidably embedded in the corresponding arc grooves 47. When frame I 4 rotates, the pins 46 slide synchronously along the arc grooves 47. Through the sliding cooperation between the pins 46 and the arc grooves 47, the rotation range of frame I 4 can be effectively limited, avoiding excessive rotation angle of frame I 4. At the same time, the stability of frame I 4 during rotation is enhanced, preventing it from deviating or shaking.

[0026] Reference Figure 1 , Figure 4 and Figure 6 One of the brackets 1 has a control panel 16 rotatably connected to its top via a damping shaft. The damping shaft allows the control panel 16 to remain fixed at any angle, making it convenient for medical staff or patients to adjust the tilt angle of the control panel 16 according to their operational needs. The control panel 16 is electrically connected to the electric push rod 8, the drive motor 28, and the pull rod displacement sensor 25, and is used to send control commands, receive detection data, and display the device's operating parameters.

[0027] Reference Figure 1 and Figure 2The bed assembly includes an upper bed board 13 and a lower bed board 14, which work together to form a complete bed for the patient to lie flat. The upper bed board 13 is fixed to the top of frame I 4 and adjusts its tilt angle synchronously with the rotation of frame I 4, primarily supporting the patient's upper body. The lower bed board 14 is slidably connected to the top of frame II 12 via a slide rail arranged along the length of frame II 12. The lower bed board 14 can slide back and forth along the slide rail, primarily supporting the patient's lower body. The sliding of the lower bed board 14 provides traction for the patient's lower body. Two [unclear - possibly referring to a specific type of bed board] are rotatably connected to the top of the bed board 13. Two support columns 15 are symmetrically arranged on both sides of the top of the upper bed board 13, corresponding to the patient's armpit position. The outer wall of each support column 15 is covered with a sponge pad, which is 2-5cm thick and made of high-density sponge material. It has good softness and elasticity, which can prevent the support column 15 from directly contacting the patient's armpit, reduce pressure and chafing on the patient's armpit skin, and improve the patient's comfort during use. A headrest 17 is also placed on the top of the upper bed board 13. The headrest 17 is made of memory foam material and can adapt to the shape of the patient's head to provide support for the patient's head and relieve neck muscle tension.

[0028] Reference Figure 5 A pad 18 is fixed to the top of the lower bed board 14. The pad 18 is made of rigid board material, with a soft pad layer 1-3cm thick adhered to its surface. The soft pad layer is made of medical-grade silicone, which has good skin-friendliness and anti-slip properties. The pad 18 allows the patient's thighs and calves to be naturally bent, adapting to the body posture during traction. Two U-shaped seats 19 are fixed to the side of the pad 18 away from the upper bed board 13. The two U-shaped seats 19 are symmetrically arranged, with their openings facing the patient's legs, and are used to restrict the patient's calves. To prevent the lower leg from shifting to the left or right during traction, one end of the pad 18 is fixed with a strap 20 by bolts. The strap 20 is made of high-strength nylon and is 3-5cm wide. The movable end of the strap 20 is connected to the other end of the pad 18 by a buckle. The strap 20 cooperates with the U-shaped seat 19 to bind and fix the patient's lower leg. During the fixation process, the tightness of the strap 20 can be adjusted according to the circumference of the patient's lower leg to ensure the stability of the fixation and avoid binding too tightly and affecting the blood circulation of the patient's leg.

[0029] Reference Figures 2-4The adjustment unit is located between the two supports 1 and is used to adjust the tilt angle of the upper bed board 13 to adapt to the traction needs of different patients, so that the patient can maintain a suitable upper body posture during traction and improve the traction effect. The adjustment unit includes two electric push rods 8, a fixed rod II 6, two rotating seats 7, and two sleeves 9. It also includes a fixed rod I 5 fixed inside the frame I 4. The fixed rod II 6 is fixed between the two supports 1 and located below the rotating shaft 3. The two ends of the fixed rod II 6 are welded and fixed to the two supports 1 respectively to provide fixed support for the adjustment unit. The outer wall of the fixed rod II 6 is rotatably fitted with two rotating seats 7. The rotating seats 7 are connected to the fixed rod II 6 through bearings to ensure that the rotating seats 7 can rotate flexibly around the fixed rod II 6. Both electric push rods 8 are... Fixed to the top of the corresponding rotating seat 7, the electric actuator 8 can be a linear actuator with a stroke range of 50-300mm and a rated thrust of 500-2000N. The extension and retraction of its output shaft can be controlled by the control panel 16, thereby achieving precise angle adjustment. A sleeve 9 is fixed to one end of the output shaft of each of the two electric actuators 8. The sleeve 9 adopts a cylindrical hollow structure, and its inner wall is welded and fixed to the end of the output shaft of the electric actuator 8. A fixing rod I5 is fixed inside the frame I4. The fixing rod I5 is arranged along the width direction of the frame I4, and its two ends are welded and fixed to the inner walls of the two sides of the frame I4 respectively. Both sleeves 9 are rotatably sleeved on the outer wall of the fixing rod I5. The sleeves 9 and the fixing rod I5 are connected by bearings, so that the sleeves 9 can rotate around the fixing rod I5.

[0030] Specifically, when it is necessary to adjust the tilt angle of the upper bed board 13, a command is sent through the control panel 16 to control the output shafts of the two electric push rods 8 to extend and retract synchronously. The extension and retraction of the output shafts of the electric push rods 8 drives the sleeve 9 to rotate along the fixed rod I5, while the rotating seat 7 rotates around the fixed rod II6, thereby driving the frame I4 to rotate around the rotating shaft 3. The frame I4 drives the upper bed board 13 to rotate synchronously, thereby adjusting the tilt angle of the upper bed board 13. During this process, the pins 46 on both sides of the frame I4 slide along the arc grooves 47 on the bracket 1, further ensuring the stability of the rotation of the frame I4. Through the precise control of the electric push rods 8, the tilt angle of the upper bed board 13 can be adjusted arbitrarily within the range of 0°-45° to meet the personalized traction needs of different patients.

[0031] Reference Figure 6The traction unit is located inside frame II 12 and is used to drive the lower bed board 14 to move on frame II 12 to achieve traction of the patient's lower body. The traction unit includes a screw 27, a drive motor 28, two sets of unlocking parts, two rotating rods 29, a T-block 23, two half nuts 30, a pull rod displacement sensor 25 and a fixing block 26, and at least one guide optical axis (not shown in the figure) arranged parallel to the screw 27. The bottom of the T-block 23 is provided with a linear bearing or sliding sleeve that slides with the guide optical axis. The screw 27 is rotatably connected inside frame II 12 and arranged along the length of frame II 12. The two ends of the screw 27 are respectively connected to the inner walls of the two sides of frame II 12 through bearings. A rotating connection ensures that the screw 27 can rotate stably around its own axis. The drive motor 28 is fixed to one side of the frame II 12 via a frame welded from steel plates and fixed to the outer wall of the frame II 12 by bolts. The drive motor 28 can be a servo motor or stepper motor with a rated power of 0.75kW and equipped with a reducer to adjust the output speed to 5-30r / min. The output shaft of the drive motor 28 is fixedly connected to the screw 27 via a coupling. The coupling is an elastic coupling, which can effectively buffer the vibration of the drive motor 28 during operation and ensure the stability of power transmission. When the drive motor 28 is running, it drives the screw 27 to rotate synchronously.

[0032] Reference Figure 6 and Figure 8Two rotating rods 29 are rotatably connected inside the lower bed plate 14, arranged along the length of the frame II 12, and located on both sides of the screw 27. The two ends of the two rotating rods 29 are rotatably connected to the inner wall of the lower bed plate 14 via bearings, ensuring that the rotating rods 29 can rotate flexibly. The screw 27 is located between the two rotating rods 29. A T-shaped block 23 is fitted onto the outer wall of the two rotating rods 29. The middle of the T-shaped block 23 has a through hole adapted to the rotating rod 29, through which the rotating rod 29 passes. One end of the screw 27 passes through the T-shaped block 23, which has a through hole adapted to the screw 27 for the screw 27 to pass through. The guide shaft is used to bear radial loads, ensuring that the lower T-shaped block 23 moves smoothly in a straight line. The screw 27 only provides axial driving force. Two half-nuts 30 are slidably connected to the side of the T-shaped block 23 closest to the drive motor 28. The opposing surfaces of the two half nuts 30 are provided with threaded teeth, which, when spliced ​​together, form a complete circular nut. This circular nut is compatible with the thread on the screw 27, enabling a threaded connection with the screw 27. When the two half nuts 30 are spliced ​​together, the circular nut engages with the screw 27 threadedly. When the screw 27 rotates, it can drive the T-shaped block 23 to move along the rotating rod 29 and the screw 27. When the two half nuts 30 are separated, the threaded engagement with the screw 27 is released, and the T-shaped block 23 can move freely along the rotating rod 29. The frame II 12 is provided with a dust cover for covering the screw 27 and the rotating rod 29. The dust cover is detachably connected to the frame II 2. The sliding contact surface of the slide rail is provided with a sealing protective sleeve. The dust cover and the sealing protective sleeve can effectively prevent fabric fibers, dust and other contaminants from entering the transmission components, avoid jamming failures, and improve the long-term operational reliability of the device in the medical environment.

[0033] Reference Figure 6 and Figure 7 The pull rod displacement sensor 25 is fixed on the inner wall of the frame II 12 away from the drive motor 28. The pull rod displacement sensor 25 can be a displacement detection element with a range of 0-500mm and an accuracy of not less than ±0.1mm. It can detect the displacement of its moving end in real time. The moving end of the pull rod displacement sensor 25 is fixed with a fixing block 26. The top of the fixing block 26 is fixed to the bottom of the lower bed plate 14 by bolts. When the lower bed plate 14 moves, it drives the fixing block 26 to move synchronously, thereby pulling the moving end of the pull rod displacement sensor 25 to extend and retract. The pull rod displacement sensor 25 transmits the detected displacement signal to the control panel 16 to realize real-time monitoring of the traction distance of the lower bed plate 14.

[0034] Reference Figure 5 , Figure 6 , Figure 8 and Figure 9The unlocking mechanism is used to manually move the lower bed board 14 when the drive motor 28 is de-energized and cannot drive the screw 27 to rotate in the reverse direction to reset the lower bed board 14. This prevents the patient from being in a traction state for a long time. The two sets of unlocking mechanisms are symmetrically arranged. Each set of unlocking mechanisms includes a vertical rod 39, a moving frame 40, a spring III 42, a vertical plate 37, a cam II 38, a pin 41, a base 31, a movable rod 32, a tail plate 34, a spring II 33, and a cam I 36. The vertical rod 39 slides through the lower bed board 14, and the axis of the vertical rod 39 is perpendicular to the top surface of the lower bed board 14. A sliding sleeve is provided between the vertical rod 39 and the lower bed board 14, and the sliding sleeve is fixed to the lower bed board 14. Inside the bed board 14, the vertical rod 39 is ensured to slide up and down along the sliding sleeve. The bottom end of the vertical rod 39 slides to the bottom of the lower bed board 14 and is fixed with a movable frame 40. The top of the movable frame 40 and the bottom of the lower bed board 14 are fixed with a spring III 42 through a spring seat. The spring III 42 is a compression spring, made of stainless steel, with a wire diameter of 0.8-1.5mm, an outer diameter of 10-20mm, a free length of 30-50mm, and an elastic coefficient of 1-3N / mm. The spring III 42 is sleeved on the outer wall of the vertical rod 39. In its natural state, the spring III 42 applies a downward elastic force to the movable frame 40, keeping the movable frame 40 in its initial position.

[0035] Reference Figure 6 , Figure 8 and Figure 9 A vertical plate 37 is fixed to the bottom of the lower bed plate 14. The vertical plate 37 is arranged perpendicular to the rotating rod 29 and is fixedly connected to the bottom of the lower bed plate 14 by bolts. One end of the rotating rod 29 passes through the vertical plate 37. A cam II 38 is rotatably connected to one side of the vertical plate 37. The middle of the cam II 38 is provided with a sliding groove that matches the rotating rod 29. The outer wall of the rotating rod 29 is provided with a slider that is embedded in the sliding groove. This allows the cam II 38 to slide on the outer wall of the rotating rod 29 through the sliding groove and the slider. When the cam II 38 rotates, it can drive the rotating rod 29. 9. The cam II 38 can slide along the axis of the rotating rod 29. A pin 41 is fixed on one side of the cam II 38. The pin 41 is arranged in a direction perpendicular to the end face of the cam II 38 and is welded and fixed to the edge of the cam II 38. The pin 41 is slidably embedded in the moving frame 40. The moving frame 40 is provided with an elongated hole that matches the pin 41. The pin 41 can slide in the elongated hole. When the moving frame 40 moves up and down, the pin 41 drives the cam II 38 to rotate around the vertical plate 37, thereby driving the rotating rod 29 to rotate.

[0036] Reference Figure 6 , Figure 8 and Figure 9A base 31 is fixedly welded to one side of the T-shaped block 23 to provide sliding support for the movable rod 32. The movable rod 32 slides through the base 31, which has a sliding hole that matches the movable rod 32, ensuring that the movable rod 32 can slide flexibly along the sliding hole. One end of the movable rod 32 near the screw 27 is fixedly connected to the half nut 30 by bolts or welding. The other end of the movable rod 32 is fixed with a tail plate 34, which is arranged perpendicular to the movable rod 32 and welded to the end of the movable rod 32. A spring II 33 is fixed between the tail plate 34 and the base 31 through a spring seat. The spring II 33 is made of stainless steel with a wire diameter of 0.6-1.2mm, an outer diameter of 8-15mm, a free length of 25-45mm, and an elastic modulus of 0.5-2N / mm. The spring II 33 is sleeved on the outer wall of the movable rod 32. In its natural state, the spring II 33 supports the tail plate 37. 4. Apply a thrust to drive the half-nuts 30 to move away from the screw 27, keeping the two half-nuts 30 separated. A cam I 36 is rotatably connected to one side of the T-block 23. The middle of the cam I 36 is provided with a slider that matches the rotating rod 29. The outer wall of the rotating rod 29 is provided with a groove, and the slider is embedded in the groove, so that the cam I 36 slides on the outer wall of the rotating rod 29 through the groove and the slider. When the rotating rod 29 rotates, it can drive the cam I 36 to rotate synchronously. At the same time, the cam I 36 can slide along the axis of the rotating rod 29. The cam I 36 cooperates with the tail plate 34. When the cam I 36 rotates to the point where the protruding end contacts the tail plate 34, it can push the tail plate 34 to move towards the screw 27, thereby driving the movable rod 32 and the half-nuts 30 to move towards the screw 27, so that the two half-nuts 30 are spliced ​​together to form a round nut, which is threadedly connected to the screw 27.

[0037] Reference Figure 9 The tail plate 34 is provided with a limiting groove 35 on the side near the rotating rod 29. The limiting groove 35 is an arc-shaped groove, and its curvature matches the curvature of the protruding end of the cam I 36. When the cam I 36 pushes the tail plate 34 to move towards the screw 27 until the two half nuts 30 are fully spliced, the protruding end of the cam I 36 is embedded in the limiting groove 35. The limiting groove 35 positions the cam I 36 to prevent the cam I 36 from rotating without external force, ensuring that the two half nuts 30 always remain spliced ​​and guaranteeing the stability of the traction process.

[0038] Reference Figure 5 , Figure 6 and Figure 8The top of each of the two vertical rods 39 is fixed with the same pedal 44. The pedal 44 is made of rectangular plate with anti-slip texture on the surface to increase friction with the patient's toes. An arc plate 45 is fixed to one side of the pedal 44. The arc plate 45 is bent away from the upper bed board 13, so that the patient can lift the arc plate 45 upward with his toes. The outer walls of both vertical rods 39 are fixed with limiting plates 43. The limiting plates 43 are made of circular plate and are welded to the outer walls of the vertical rods 39. They are located between the lower bed board 14 and the pedal 44 and are used to limit the vertical rods 39 to prevent them from moving too far downward under the elastic force of the spring III 42. This ensures that there is a 5-10mm gap between the arc plate 45 and the lower bed board 14 for the patient's toes to fit in.

[0039] An emergency operating lever that can be manually pulled or pressed by the operator is also provided on or near the pedal 44. In addition to the patient operating it with their toes, medical staff can also manually pull the emergency operating lever (not shown in the figure) located on the side of the pedal 44 to move the vertical rod 39 upward, thereby triggering the unlocking mechanism.

[0040] Reference Figure 1 , Figure 4 and Figure 6The control components are centered around the control panel 16, integrating a controller, power supply module, signal acquisition module, and drive module. The controller uses an STM32F103 microcontroller as the core of the entire device, responsible for receiving user operation commands, processing sensor detection signals, and outputting drive control signals. The power supply module uses an AC / DC power adapter with an input voltage of 220V AC and an output voltage of 12V DC, providing stable power to electrical components such as the controller, electric push rod 8, drive motor 28, and rod displacement sensor 25. The signal acquisition module is connected to the rod displacement sensor 25, used to receive the displacement detection signal transmitted by the rod displacement sensor 25 and convert it into a digital signal for transmission to the controller. The drive module includes an electric push rod 8 drive circuit and a motor drive circuit. The electric push rod 8 drive circuit uses a relay module to receive control signals output by the controller. The controller receives PWM signals from the controller to control the start, stop, and extension / retraction direction of the electric push rod 8. The motor drive circuit uses an L298N drive module to receive PWM signals from the controller and control the start, stop, rotation direction, and speed of the drive motor 28. The control panel 16 is equipped with a power switch, angle adjustment buttons, traction start / stop buttons, traction speed adjustment knob, and a display screen. The power switch controls the power supply to the entire device. The angle adjustment buttons include "up" and "down" buttons for adjusting the tilt angle of the upper bed board 13. The traction start / stop button controls the start and end of the traction process. The traction speed adjustment knob adjusts the speed of the drive motor 28, thereby adjusting the traction speed. The display screen uses an LCD1602 display to show parameters such as the tilt angle of the upper bed board 13, traction distance, traction speed, and device operating status in real time, facilitating real-time monitoring and adjustment by medical staff.

[0041] The controller is configured to: receive angle setting commands input by the user through the control panel 16, control the two electric push rods 8 to extend and retract synchronously to adjust the upper bed board 13 to the target tilt angle; after receiving a traction command, control the drive motor 28 to rotate at the set speed and direction to perform traction or reset operations; at the same time, receive feedback signals from the pull rod displacement sensor 25 in real time, and control the drive motor 28 to stop when the traction distance reaches the set value.

[0042] In another embodiment: Refer to Figure 6 and Figure 7The bottom of the lower bed plate 14 is provided with a sliding groove 21, which extends along the length of the lower bed plate 14. A T-shaped block 23 is slidably connected in the sliding groove 21, and the top of the T-shaped block 23 extends into the sliding groove 21. A slide rod 22 is also fixed in the sliding groove 21, which is arranged along the length of the sliding groove 21. The slide rod 22 slides through the T-shaped block 23, allowing the T-shaped block 23 to slide stably along the slide rod 22. Two springs I 24 are sleeved on the outer wall of the slide rod 22. The springs I 24 are compression springs made of stainless steel with a wire diameter of 1.2-2.0 mm, an outer diameter of 15-25 mm, a free length of 40-60 mm, and an elastic modulus of 2-5 N / mm. The ends of the two springs I24 that are close to each other are fixedly connected to the two sides of the T-shaped block 23 through spring seats, and the ends of the two springs I24 that are far apart from each other are fixedly connected to the inner wall of the corresponding sliding groove 21 through spring seats. Through the elastic action of the springs I24, they can play a role in giving way and buffering when the T-shaped block 23 drives the lower bed board 14 to move.

[0043] It should be understood that, in order to ensure the long-term stable operation of the device, dust covers can be installed on moving parts such as screw 27, slide rail and rotating shaft 3, or regular lubrication and maintenance can be performed. After long-term use, it is recommended that the above transmission components be cleaned and lubricated by professionals every 3 months. The dust cover should be checked for sealing status regularly, and if it is damaged, it should be replaced in time to ensure the protective effect.

[0044] The rehabilitation method using a spinal deformity correction traction rehabilitation device includes the following steps: S1. The patient lies on the upper bed board 13 and the lower bed board 14, with the upper body on the upper bed board 13 and the lower body on the lower bed board 14. Two support columns 15 are located under the patient's armpits. The pad 18 allows the patient's thighs and calves to bend, and the U-shaped seat 19 restricts the two calves. The straps 20 restrict the patient's two calves, so that the patient's lower body can be pulled when the lower bed board 14 moves later. S2. During traction, the screw 27 is driven to rotate by the drive motor 28. Since the two half nuts 30 are spliced ​​into a round nut under the push of the cam I 36, the rotation of the screw 27, in cooperation with the round nut, drives the lower bed board 14 to move through the T-block 23, thus initially completing the traction operation of the lower body. In addition, the T-block 23 slides in the sliding groove 21, and under the elastic action of the two springs I 24, it can play a role in giving way and buffering when the T-block 23 drives the lower bed board 14 to move, so as to avoid excessive traction and cause harm to the patient. S3. Furthermore, the tilt angle of the frame I4 can be adjusted according to the patient's needs, so that the patient can control the tilt angle of the upper body during traction and improve the traction effect. Specifically, the extension and retraction of the output shaft of the electric push rod 8 drives the fixed rod I5 to move, and then the fixed rod I5 drives the frame I4 to rotate around the rotation axis 3. S4. During the traction process of the drive motor 28 driving the screw 27, if the drive motor 28 is de-energized and cannot drive the screw 27 to rotate in the opposite direction to reset the lower bed board 14, the patient's toes lift the arc plate 45 and the pedal 44 upwards. The pedal 44 drives the vertical rod 39 and the moving frame 40 to move upwards against the elastic force of the spring Ⅲ 42. The moving frame 40 and the pin 41 cooperate to drive the rotating rod 29 to rotate through the cam Ⅱ 38. The rotating rod 29 drives the cam Ⅰ 36 to rotate. The cam Ⅰ 36 releases the push on the tail plate 34. The half nut 30 moves away from the screw 27 under the elastic force of the spring Ⅱ 33. The two half nuts 30 separate, releasing the threaded engagement with the screw 27. Then, the lower bed board 14 resets under the natural extension and contraction of the body, releasing the traction operation and avoiding the problem of the lower bed board 14 not being able to reset due to power failure.

[0045] However, as is well known to those skilled in the art, the working principles and electrical connections of the drive motor 28, the rod displacement sensor 25, the control panel 16, and the electric push rod 8 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0046] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0047] The above description is only a preferred embodiment 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 spinal deformity correction traction rehabilitation device, characterized in that, The utility model relates to a kind of adjustable traction bed, including: Two supports (1), same rotating shaft (3) is rotatably connected between two the support (1); Frame I (4), fixedly set in the outer wall of the rotating shaft (3), the top of frame I (4) is fixed with the upper bed board (13) for supporting the upper body of patient; Frame II (12), the top of frame II (12) is slidably connected with the lower bed board (14) for supporting the lower body of patient by slide rail; Adjusting part, set between two the support (1), for driving frame I (4) rotates around rotating shaft (3) to adjust the inclination angle of the upper bed board (13), the adjusting part includes two electric push rods (8); Traction part, set in frame II (12), for driving the lower bed board (14) moves along frame II (12) to carry out traction, the traction part includes screw rod (27), drive motor (28) and two groups of unlocking part, the drive motor (28) is drivingly connected with the screw rod (27), the unlocking part is used to when the drive motor (28) is powered off, the drive of the traction part to the lower bed board (14) is released to make the lower bed board (14) can reset movement; Wherein, the traction part is threadedly cooperated with a separable nut member by screw rod (27), and the drive motor (28) drives screw rod (27) to rotate, in turn drive the lower bed board (14) connected with the nut member moves;The unlocking part is used to drive the nut member and the screw rod (27) are separated when power off.

2. The spinal deformity correction traction rehabilitation device of claim 1, wherein, The adjusting part further includes fixed rod II (6) fixed between two supports (1), the outer wall of fixed rod II (6) is rotatably sleeved with two rotating seats (7), two the electric push rod (8) is respectively fixed on corresponding rotating seat (7), the output shaft end of two the electric push rod (8) is fixed with sleeve (9), frame I (4) is fixed with fixed rod I (5), two the sleeve (9) are rotatably sleeved in the outer wall of fixed rod I (5);The electric push rod (8) drives fixed rod I (5) to move by the sleeve (9), in turn drive frame I (4) rotates around rotating shaft (3).

3. The spinal deformity correction traction rehabilitation device of claim 2, wherein, The traction part further comprises two rotating rods (29) rotatably connected in the lower deck (14), one end of each of the two rotating rods (29) penetrates the same T-shaped block (23), the screw rod (27) is parallelly arranged between the two rotating rods (29), and the shank of the screw rod (27) penetrates a through hole in the T-shaped block (23), the inner diameter of the through hole is larger than the outer diameter of the screw rod (27), so that the screw rod (27) can freely rotate therein, and two half nuts (30) are slidably connected to the side of the T-shaped block (23) close to the driving motor (28), the two half nuts (30) are spliced to form a circular nut which is threadedly connected with the screw rod (27); the frame II (12) further comprises a pull rod displacement sensor (25) fixed therein, and the movable end of the pull rod displacement sensor (25) is connected to the bottom of the lower deck (14) through a fixed block (26).

4. The spinal deformity correction traction rehabilitation device of claim 3, wherein, The unlocking part comprises a vertical rod (39) slidingly penetrating the lower deck (14), and a moving frame (40) is fixed to the bottom end of the vertical rod (39), and a spring III (42) is arranged between the moving frame (40) and the bottom of the lower deck (14) and surrounds the vertical rod (39); the bottom of the lower deck (14) is fixed with a vertical plate (37), one end of the rotating rod (29) penetrates the vertical plate (37) and is slidably sleeved with a cam II (38) through a sliding groove and a sliding block, and the cam II (38) is rotatably arranged on one side of the vertical plate (37), and one side of the cam II (38) is fixed with a pin shaft (41) slidingly arranged in the moving frame (40); one side of the T-shaped block (23) is fixed with a base (31), and a movable rod (32) slidingly penetrates the base (31), one end of the movable rod (32) is fixedly connected with the half nut (30), and the other end is fixed with a tail plate (34), and a spring II (33) is arranged between the tail plate (34) and the base (31) and surrounds the movable rod (32); one side of the T-shaped block (23) is rotatably connected with a cam I (36), and the cam I (36) is slidably sleeved with the sliding groove fixed on the rotating rod (29) through the sliding block on the cam I (36), so that the cam I (36) can rotate with the rotating rod (29) and slide along the axial direction of the rotating rod (29), and the protruding part of the cam I (36) is matched with the tail plate (34).

5. The spinal deformity correction traction rehabilitation device of claim 4, wherein, The top ends of the two vertical rods (39) are fixed with the same pedal (44), and one side of the pedal (44) is fixed with an arc-shaped plate (45); the outer wall of the vertical rod (39) is further fixedly sleeved with a limiting plate (43).

6. The spinal deformity correction traction rehabilitation device of claim 5, wherein, The side of the tail plate (34) close to the rotating rod (29) is provided with a limiting groove (35), and when the cam I (36) is clamped into the limiting groove (35), the tail plate (34) and the half nut (30) are pushed to move towards the screw rod (27).

7. The spinal deformity correction traction rehabilitation device of claim 6, wherein, The top of the lower deck (14) is fixed with a pad plate (18), one side of the pad plate (18) away from the upper deck (13) is fixed with two U-shaped seats (19), and the pad plate (18) is further provided with a binding belt (20) for binding the lower leg.

8. The spinal deformity correction traction rehabilitation device of claim 7, wherein, The frame body I (4) is fixed with a pin column (46) on both sides, and the two supports (1) are provided with an arc-shaped slot (47) in sliding fit with the pin column (46); the frame body II (12) is fixed with a second connecting plate (10) on both sides, and the two second connecting plates (10) are rotatably sleeved on the outer wall of the rotating shaft (3).

9. The spinal deformity correction traction rehabilitation device of claim 8, wherein, The bottom of the lower bed plate (14) is provided with a sliding groove (21), the top of the T-shaped block (23) extends into the sliding groove (21) and is in sliding connection with the sliding groove (21), the sliding groove (21) is fixed with a sliding rod (22) sliding through the T-shaped block (23), and the outer wall of the sliding rod (22) is sleeved with two springs I (24), and the two springs I (24) are located on both sides of the T-shaped block (23) respectively.

10. A method of rehabilitation using the spinal deformity correction traction rehabilitation device according to claim 9, wherein, The method comprises the following steps: S1, the patient lies flat on the device, the upper body is located on the upper bed plate (13) and the armpits are abutted against the supporting column (15), the lower body is located on the lower bed plate (14), and the legs are placed on the pad plate (18) and fixed and limited by the U-shaped seat (19) and the binding belt (20); S2, the driving motor (28) is started to drive the screw rod (27) to rotate, at this time, the two half nuts (30) are in a closed state and are in threaded fit with the screw rod (27), the screw rod (27) drives the lower bed plate (14) to move through the T-shaped block (23) and implements traction on the patient; in the traction process, the spring I (24) arranged on both sides of the T-shaped block (23) is used for buffering the traction force; S3, the electric push rod (8) is controlled to stretch out and retract, the fixed rod I (5) is driven to move through the sleeve (9), the frame body I (4) is driven to rotate around the rotating shaft (3), so that the inclination angle of the upper bed plate (13) is adjusted; S4, when the driving motor (28) is powered off and needs to be reset, the arc-shaped plate (45) is lifted upward to drive the pedal (44) and the vertical rod (39) to move upward, so that the moving frame (40) moves upward against the resistance of the spring III (42); the moving frame (40) drives the cam II (38) and the rotating rod (29) to rotate through the pin shaft (41); the rotating rod (29) drives the cam I (36) to rotate to release the thrust on the tail plate (34), the two half nuts (30) are separated under the action of the spring II (33) and release the threaded fit with the screw rod (27), and the lower bed plate (14) is reset under the body retraction force. ​ ​

Images