Exercise device for improving lower limb muscles of spastic paraplegia patient

Abstract

The invention relates to the technical field of rehabilitation medical equipment, in particular to an exercise device for improving lower limb muscles of a spastic paraplegia patient, the exercise device comprises a moving bed, an angle adjusting set, a base, a threaded positioning plate and a lifting frame, the angle adjusting set is installed on the rear portion of the moving bed, and the angle adjusting set comprises the base abutting against the rear top face of the moving bed; the lower part of the threaded positioning plate is propped against the rear bottom surface of the moving bed. Through an angle adjusting set composed of the base, the threaded positioning plate and the adjusting screw rod, the device can be flexibly installed on a hospital bed, the height of the lifting frame is adjusted according to the rehabilitation stage of a patient and personal requirements, the application range can be widened, and cost can be reduced; meanwhile, the motion amplitude and speed of the swing plate can be controlled by adjusting the threaded rod so as to be suitable for a patient in the initial rehabilitation stage or with weak muscle strength, use safety is ensured, different rehabilitation requirements are met, and then safety and applicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation medical equipment, and more specifically, to an exercise device for improving the lower limb muscles of patients with spastic paraplegia. Background Art

[0002] Spastic paraplegia is a neurodegenerative disease characterized by increased muscle tone and movement disorders in the lower extremities. Regular lower limb muscle exercise is crucial for patients, as long-term lack of activity can lead to muscle atrophy, but exercise can stimulate muscle contraction, maintain muscle strength, and delay muscle degeneration; moreover, appropriate exercise helps improve cardiopulmonary function and overall physical strength, enabling patients to better cope with daily physical demands.

[0003] After retrieval, the authorized document with the Chinese patent publication number CN220175974U discloses a lower limb exercise device. By setting the pedal, limit groove, return spring, and square plate, patients can choose to bend their knees for lower limb exercise during rehabilitation; and through the vertical plate, rotating shaft, and foot placement plate provided, patients can also choose to exercise with their legs spread in a figure-eight shape during rehabilitation, achieving diverse exercise methods and aiming to comprehensively rehabilitate the lower limb muscle groups of orthopedic patients.

[0004] However, the exercise scheme adopted in the above patent mainly relies on the patient's own stepping on the pedal to achieve knee bending exercise when bending the knees, which makes it difficult for some patients with weak leg nerve and muscle strength to use. In addition, the overall device is integrally designed with the bed body, lacking flexibility, and the cost is relatively high when different patients need to perform muscle exercise.

[0005] Therefore, there is an urgent need to develop a more flexible, personalized, and efficient exercise device for improving the lower limb muscles of patients with spastic paraplegia to meet the special needs of patients with spastic paraplegia and improve the rehabilitation effect and quality of life. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides an exercise device for improving the lower limb muscles of patients with spastic paraplegia.

[0007] The technical solution of the present invention is: An exercise device for improving the lower limb muscles of patients with spastic paraplegia, comprising a mobile bed, support rods, an angle adjustment group, a base, a threaded positioning plate, a lifting frame, an adjustment screw rod, a drive group, a swing adjustment group, leg straps and foot straps. The mobile bed is the installation carrier. On both sides of the top of the mobile bed, there are fixed support rods protruding upwards. At the rear of the mobile bed, there is installed an angle adjustment group. The angle adjustment group includes a base abutting against the rear top surface of the mobile bed, and a threaded positioning plate threaded through the base and having its lower part abutting against the rear bottom surface of the mobile bed. A fastener is inserted through the threaded penetration part of the threaded positioning plate and the base. An inclined lifting frame is hinged to the upper side of the base. A limiting chute is opened inside the lifting frame. An adjustment screw rod is threaded through the middle of the base. The upper part of the adjustment screw rod slides into the limiting chute and extends towards both sides of the limiting chute to form a restriction. At the top of the lifting frame, there is rotatably installed a drive group for the patient to swing the lower limbs independently. On both outer sides of the drive group, there are rotatably installed a swing adjustment group directly driving the lower limb movements of the patient. Leg straps are symmetrically arranged on the side of the pedal of the swing adjustment group, and a foot strap is arranged on the other side of the pedal.

[0008] Further, the drive group includes a protective cover, a large gear, a first small gear, a motor, mating teeth, a clamping disc, a cylindrical gear, a pull rod and a first spring. A protective cover is rotatably arranged on the top of the lifting frame. Inside the protective cover, a large gear is rotatably arranged on one side. Below the large gear on one side inside the protective cover, a first small gear is rotatably arranged. The first small gear is rotationally meshed with the large gear. A motor is installed in the inner side of the protective cover corresponding to the front of the first small gear. The output shaft of the motor is connected to the first small gear. Symmetric mating teeth are opened at the bottom of the protective cover. A cylindrical gear is rotatably arranged inside the upper part of the lifting frame corresponding to the lower part of the mating teeth. The cylindrical gear is rotationally meshed with the mating teeth. A clamping disc is arranged outside the rotational connection shaft between the protective cover and the lifting frame. Symmetric notches are opened at the lower part of the clamping disc. A pull rod is slidably penetrated through the inside of the cylindrical gear. The penetrated part of the pull rod abuts against the side surface of the lifting frame, and the upper end of the penetrated part is restricted in one of the notches. A first spring is arranged at the sliding connection part between the end of the pull rod and the inside of the cylindrical gear.

[0009] Further, the swing adjustment group includes a swing plate, a guide post, a sliding seat and a pedal. The central shaft at both ends of the large gear penetrates through the side part of the protective cover. The penetrated parts of the central shaft are both provided with swing plates, and the swing plates on both sides are arranged staggeredly. Inside each swing plate, guide posts are symmetrically arranged. Between the symmetric guide posts in each direction, a sliding seat is slidably arranged. A pedal is rotatably arranged on the outer side of the sliding seat.

[0010] Furthermore, the swing adjustment group also includes a base plate, a limiting ring, a second spring, a pusher, a guide frame, a fan-shaped pusher and a limit rod. The side of the slide seat away from the pedal is fixed with a base plate, the side of the base plate facing outward is provided with symmetrical positioning members, and a positioning rod is provided at the lower middle position of the side. Limiting rings are slidably provided on the outside of the two positioning members, and the two limiting rings are close to each other. A second spring is provided between the rod-shaped part inside each limiting ring and the corresponding positioning member. A pusher with an end in a converging inclined surface is slidably provided on the side of the base plate, and the inclined portion of the pusher is in sliding contact with the outside of the two limiting rings. A guide frame is fixed to the outward side of the plate, and limiting grooves adapted to the width of the outer contour of the limiting ring are opened on both sides of the upper part of the guide frame, and a guide groove adapted to the width of the outer contour of the pushing piece is opened on the lower part of the guide frame. Initially, the lower part of the pushing piece slides and protrudes out of the guide groove, and a fan-shaped push piece is rotatably arranged on the outside of the guide frame. The lower part of the fan-shaped push piece extends to the side of the guide frame, and the extension part of the fan-shaped push piece is rotatably connected to the side of the guide frame, and the extension part is in rotational contact with the lower part of the pushing piece. A plurality of limit rods are symmetrically arranged on both sides of the outside of the swing plate. When the limit ring slides out of the limiting groove, its outer part is stuck between two adjacent limit rods.

[0011] Furthermore, the extended portion of the fan-shaped push piece has anti-slip grooves on its surface.

[0012] Furthermore, it also includes a deceleration pressure plate, a guide rod, a spring three, a threaded rod and a tapered column. A deceleration pressure plate is slidably arranged at a position close to the large gear in the upper part of the protective cover, a guide rod is symmetrically arranged on the side of the protective cover away from the large gear, the interior of the deceleration pressure plate is slidably connected to the guide rod, a spring three is arranged between the guide rod and the deceleration pressure plate, a threaded rod is threaded through the top of the protective cover, the lower part of the threaded rod extends into the protective cover, a tapered column is arranged at the bottom of the extending part, and when the tapered column moves downward, its tapered part contacts the deceleration pressure plate, so that the side of the deceleration pressure plate generates friction with the surface of the large gear to achieve deceleration.

[0013] Further, it further includes a ring gear, a second pinion, a transmission shaft, bevel gears, a stabilizer shaft, a pulley set, impact bars, ejector posts, contact bars, massage posts, a rotating shaft and a torsion spring. A ring gear is rotatably arranged at a position on the outside of the sliding seat close to the pedal, and the ring gear is connected to the rotating shaft of the pedal. A second pinion is rotatably arranged below one side of the ring gear on the same pedal, and the second pinion is rotatably meshed with the upper ring gear. A horizontal transmission shaft is rotatably arranged inside the pedal, and the transmission shaft is connected to the central axis of the second pinion. There are two bevel gears. A first bevel gear is arranged at the end of the transmission shaft away from the pinion. A vertical stabilizer shaft is rotatably arranged below the transmission shaft near the inner bottom of the pedal, and a second bevel gear is arranged at the upper part of the stabilizer shaft. The bevel gears in two positions are rotatably meshed. A pulley set is rotatably arranged at the middle position of the inner bottom of the pedal. One pulley of the pulley set is connected to the lower part of the stabilizer shaft. A plurality of symmetric impact bars are arranged on the outer surface of the synchronous belt of the pulley set. A plurality of ejector posts are symmetrically and rotatably arranged on both sides of the inner bottom of the pedal. A contact bar is arranged on the outer surface of each ejector post near the synchronous belt, and the contact bar is rotatably matched with the impact bar to realize the rotation of the ejector post. A plurality of symmetric massage posts are slidably penetrated through the top of the pedal, and each massage post corresponds to above each ejector post. The massage post is in contact with the ejector post, and the adjacent surfaces of the two are inclined and completely fit. A rotating shaft is arranged between the rotating position of each ejector post and the inner bottom of the pedal, and a torsion spring is arranged between each rotating shaft and the corresponding inner part of the ejector post.

[0014] Further, when the pulley set runs reciprocally, the impact bars continuously impact the contact bars. The contact bars are rotated by the impact force and drive the ejector posts to rotate, and the ejector posts continuously push the massage posts according to their inclined surfaces. Each massage post forms a wavy and orderly undulating shape to activate the tendons and veins of the lower limbs.

[0015] The beneficial effects are as follows: 1. The angle adjustment group composed of the base, the threaded positioning plate and the adjusting screw rod enables the device to be flexibly installed on a hospital bed and adjust the height of the lifting frame according to the patient's rehabilitation stage and personal needs, which can expand the application range and reduce costs. At the same time, the movement amplitude and speed of the swing plate can be controlled by adjusting the threaded rod to be suitable for patients in the initial stage of rehabilitation or with weak muscle strength, ensuring the use safety and adapting to different rehabilitation needs, thereby improving the safety and applicability.

[0016] 2. The locking mechanism of the limiting ring and the limiting rod in the swing adjustment group allows the sliding seat to remain stable at the set height position, ensuring that the patient maintains the correct posture throughout the training process. In addition, the design of the leg straps and foot straps increases the patient's sense of security and comfort, and also prevents the device from sliding or falling off during use.

[0017] 3. For patients who have begun to recover some of their lower limb strength, they can actively participate in exercise under the guidance of medical staff, and activate a series of internal mechanical transmission structures (such as the ring gear, pinion 2, drive shaft, etc.) by stepping back on the pedal, ultimately achieving a massage effect. This helps to activate the muscles and veins of the lower limbs, improve blood circulation, and also enhance the patient's enthusiasm and self-confidence in rehabilitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the general assembly structure of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the angle adjustment group and the swing adjustment group of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the angle adjustment group and the swing adjustment group of the present invention, wherein the protective cover is a side section.

[0021] Figure 4 The figure is a schematic diagram of the cross-sectional structure of the protective cover of the present invention after being cut open to show its interior.

[0022] Figure 5 The figure is a schematic diagram of the cross-sectional structure of the lifting frame of the present invention after being cut open to show its interior.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of components such as the pedal, the swing plate and the guide column of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the slide seat, gear ring, guide frame and other components of the present invention.

[0025] Figure 8 The exploded view shows the components such as the slide seat, guide frame and pusher of the present invention.

[0026] Figure 9 It is a schematic diagram of the state in which the pusher of the present invention squeezes open two adjacent limiting rings.

[0027] Figure 10 The figure is a schematic diagram of the cross-sectional structure of the pedal and the sliding seat of the present invention after being cut open to show the interior thereof.

[0028] Figure 11 The figure is a schematic diagram of the cross-sectional structure of the pedal of the present invention after half-cutting to show its interior.

[0029] Figure 12 The exploded view shows the top column, massage column, torsion spring and other components of the present invention.

[0030] Names and serial numbers of components in the figure: 1. Moving bed, 11. Support rod, 2. Angle adjustment group, 21. Base, 22. Threaded positioning plate, 23. Lifting frame, 24. Adjusting screw rod, 3. Driving group, 31. Protective cover, 311. Large gear, 312. Small gear I, 313. Motor, 32. Matching tooth, 33. Clamping disc, 34. Cylindrical gear, 35. Pull rod, 36. Spring I, 4. Swing adjustment group, 41. Swing plate, 42. Guide post, 43. Slide seat, 431. Base plate, 432. Limiting ring, 433. Spring II, 434. Pushing member, 435. Guide frame, 436. Sector-shaped pushing member, 437. Limiting rod, 44. Pedal, 5. Deceleration pressing plate, 51. Guide rod, 52. Spring III, 53. Threaded rod, 54. Tapered column, 6. Leg strap, 61. Foot strap, 7. Tooth ring, 71. Small gear II, 711. Transmission shaft, 72. Bevel gear, 73. Stabilizing shaft, 74. Pulley group, 75. Impact bar, 76. Top column, 761. Contact bar, 77. Massage column, 78. Rotating shaft, 79. Torsion spring. Detailed implementation mode

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the specific implementation mode and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0032] Example: An exercise device for improving the lower limb muscles of patients with spastic paraplegia, as Figures 1 - 11As shown, it includes a mobile bed 1, a support rod 11, an angle adjustment group 2, a base 21, a threaded positioning plate 22, a lifting frame 23, an adjustment screw 24, a drive group 3, a swing adjustment group 4, a leg strap 6 and a foot strap 61. The mobile bed 1 is the installation carrier. The mobile bed 1 is a prior art and serves as the basis of the entire device, providing a platform for patients to lie flat for lower limb muscle exercise. On both sides of the top of the mobile bed 1, there are fixed upwardly protruding support rods 11. The support rods 11 are auxiliary components for patients to rely on when lying down or getting up. The angle adjustment group 2 is installed at the rear of the mobile bed 1. The angle adjustment group 2 includes a base 21 abutting against the rear top surface of the mobile bed 1, and a threaded positioning plate 22 threaded through the base 21 and abutting against the rear bottom surface of the mobile bed 1 at the lower part. A fastener is provided through the threaded penetration of the threaded positioning plate 22 and the base 21 to allow the flexible installation of the device on a hospital bed. An inclined lifting frame 23 is hinged to the upper side of the base 21. A limiting chute is provided inside the lifting frame 23. An adjustment screw 24 is threaded through the middle of the base 21. The upper part of the adjustment screw 24 slides into the limiting chute and extends towards both sides of the limiting chute to form a restriction. The adjustment screw 24 is used to adjust the height of the lifting frame 23 to adapt to the body position requirements of different patients, improve the application range of the device and reduce costs. The drive group 3 for realizing the independent swing of the patient's lower limbs is rotatably installed at the top of the lifting frame 23. The swing adjustment group 4 directly driving the patient's lower limb movement is rotatably installed on both outer sides of the drive group 3. The lifting frame 23 is used in cooperation with the adjustment screw 24 and can adjust its angle relative to the base 21, thereby changing the position of the swing adjustment group 4 to ensure the comfort of the patient and achieve the best exercise effect. Leg straps 6 are symmetrically arranged on the side of the pedal 44 of the swing adjustment group 4, and a foot strap 61 is arranged on the other side of the pedal 44.

[0033] As Figures 1 - 5As shown in the figure, the drive group 3 includes a protective cover 31, a large gear 311, a first small gear 312, a motor 313, mating teeth 32, a clamping disc 33, a cylindrical gear 34, a pull rod 35 and a first spring 36. A protective cover 31 is rotatably arranged on the top of the lifting frame 23 to protect the internal mechanical components and serve as the housing of the drive group 3. A large gear 311 is rotatably arranged on one side inside the protective cover 31. A first small gear 312 is rotatably arranged below the large gear 311 on one side inside the protective cover 31. The first small gear 312 is rotationally meshed with the large gear 311. A motor 313 is installed in the inner side of the protective cover 31 corresponding to the front of the first small gear 312. The output shaft of the motor 313 is connected to the first small gear 312. The first small gear 312 is meshed with the large gear 311 to transmit the power of the motor 313 to the large gear 311. Symmetric mating teeth 32 are provided at the bottom of the protective cover 31. A cylindrical gear 34 is rotatably arranged in the upper part of the lifting frame 23 corresponding to the lower part of the mating teeth 32. The cylindrical gear 34 is rotationally meshed with the mating teeth 32 to realize the angular adjustment of the whole protective cover 31. A clamping disc 33 is arranged outside the rotation connection shaft between the protective cover 31 and the lifting frame 23. Symmetric notches are provided at the lower part of the clamping disc 33. A pull rod 35 is slidably arranged through the inside of the cylindrical gear 34. The penetrating part of the pull rod 35 abuts against the side surface of the lifting frame 23, and the upper end of the penetrating part is limited in one of the notches. The clamping disc 33 cooperates with the pull rod 35 to control the angular change of the protective cover 31. A first spring 36 is arranged at the sliding connection part between the end of the pull rod 35 and the inside of the cylindrical gear 34. The pull rod 35 controls the position of the clamping disc 33 through the elastic action of the first spring 36 to realize the locking and release of the angle of the protective cover 31.

[0034] As Figures 2 - 4 and Figures 6 - 11 shown in the figure, the swing adjustment group 4 includes a swing plate 41, a guide post 42, a sliding seat 43 and a pedal 44. The two ends of the central axis of the large gear 311 penetrate through the side part of the protective cover 31, and swing plates 41 are arranged at the penetrating parts of the central axis. The swing plates 41 swing as the large gear 311 rotates, driving the calf and foot fixed by the leg strap 6 and the foot strap 61 on the pedal 44 to perform knee flexion and extension movements. The swing plates 41 on both sides are arranged staggeredly. Guide posts 42 are symmetrically arranged inside each swing plate 41. A sliding seat 43 is slidably arranged between the symmetric guide posts 42 in all directions. The guide posts 42 provide guidance for the sliding seat 43 to ensure that it slides along the set path. A pedal 44 is rotatably arranged on the outer side of the sliding seat 43.

[0035] As Figures 6 - 9As shown, the swing adjustment group 4 also includes a base plate 431, a limiting ring 432, a second spring 433, a pusher 434, a guide frame 435, a fan-shaped pusher 436 and a limit rod 437. The side of the slide 43 away from the pedal 44 is fixed with a base plate 431 to provide a mounting basis for other components. A symmetrical positioning member is provided on the outward side of the base plate 431, and a positioning rod is provided at the middle and lower position of the side. The outsides of the two positioning members are both slidably penetrated with a limiting ring 432, and the two limiting rings 432 are close to each other. A second spring 433 is provided between the rod-shaped portion inside each limiting ring 432 and the corresponding positioning member. The second spring 433 provides the elastic force required for the limiting ring 432 to reset. A pusher 434 with a converging inclined surface at the end is slidably provided on the side of the base plate 431. The inclined portion of the pusher 434 is in sliding contact with the outsides of the two limiting rings 432. A guide frame 435 is fixed on the outward side of the base plate 431. The guide frame 435 has limiting grooves on both sides of the upper part that are adapted to the width of the outer contour of the limiting ring 432, and the guide frame 435 has a guide groove on the lower part that is adapted to the width of the outer contour of the pushing member 434. The guide frame 435 provides a sliding path for the pushing member 434 to ensure the correct movement of the pushing member 434 and the limiting ring 432. Initially, the lower part of the pushing member 434 slides and protrudes out of the guide groove, and a fan-shaped pushing member 436 is rotatably arranged on the outside of the guide frame 435. The extended part of the fan-shaped pushing member 436 has anti-slip grooves on the surface, and the lower part of the fan-shaped pushing member 436 extends to the side of the guide frame 435. The extended part of the fan-shaped pushing member 436 is rotatably connected to the side of the guide frame 435, and the extended part is in rotational contact with the lower part of the pushing member 434. A plurality of limiting rods 437 are symmetrically arranged on both sides of the outside of the swing plate 41. When the limiting ring 432 slides out of the limiting groove, its outside is stuck between two adjacent limiting rods 437 to lock the position of the slide seat 43.

[0036] like Figure 4 As shown, it also includes a deceleration pressure plate 5, a guide rod 51, a spring three 52, a threaded rod 53 and a tapered column 54. The deceleration pressure plate 5 is slidably arranged at a position close to the large gear 311 in the upper part of the protective cover 31, and the guide rod 51 is symmetrically arranged on the side of the protective cover 31 away from the large gear 311. The interior of the deceleration pressure plate 5 is slidably connected with the guide rod 51, and the guide rod 51 provides a sliding guide for the deceleration pressure plate 5. A spring three 52 is arranged between the guide rod 51 and the deceleration pressure plate 5. A threaded rod 53 is arranged through the top thread of the protective cover 31, and the lower part of the threaded rod 53 extends into the protective cover 31. A tapered column 54 is arranged at the bottom of the extending part, and the threaded rod 53 is used to adjust the position of the tapered column 54. When the tapered column 54 moves downward, its tapered portion contacts the deceleration pressure plate 5, so that the side of the deceleration pressure plate 5 and the surface of the large gear 311 generate friction, thereby achieving deceleration and limiting the movement amplitude and speed, protecting the safety of patients. The present invention is suitable for patients in the early stages of rehabilitation or with weak muscle strength to prevent injuries caused by excessive movement amplitude.

[0037] like Figures 7 - 12As shown in the figure, it further includes a toothed ring 7, a second pinion 71, a transmission shaft 711, a bevel gear 72, a stabilizing shaft 73, a pulley group 74, an impact bar 75, a top column 76, a contact bar 761, a massage column 77, a rotating shaft 78 and a torsion spring 79. A toothed ring 7 is rotatably arranged at a position outside the sliding seat 43 close to the pedal 44. The toothed ring 7 is connected to the rotating shaft of the pedal 44. The pedal 44 drives the toothed ring 7 to rotate. When the patient steps on the pedal 44, the toothed ring 7 is driven to rotate. A second pinion 71 is rotatably arranged below one side of the toothed ring 7 on the pedal 44. The second pinion 71 is rotatably meshed with the upper toothed ring 7. A horizontal transmission shaft 711 is rotatably arranged inside the pedal 44. The transmission shaft 711 is connected to the central axis of the second pinion 71. There are two bevel gears 72. A first bevel gear 72 is arranged at the end of the transmission shaft 711 away from the pinion. The second pinion 71 is meshed with the toothed ring 7, further driving the transmission shaft 711 and the bevel gear 72 to rotate. A vertical stabilizing shaft 73 is rotatably arranged at the bottom inside the pedal 44 close to the lower part of the transmission shaft 711. A second bevel gear 72 is arranged at the upper part of the stabilizing shaft 73. The two bevel gears 72 at two positions are rotatably meshed. The two bevel gears 72 are meshed with each other, transmitting the power of the transmission shaft 711 to the stabilizing shaft 73. A pulley group 74 is rotatably arranged at the middle position of the bottom inside the pedal 44. One pulley of the pulley group 74 is connected to the lower part of the stabilizing shaft 73. Symmetrically arranged impact bars 75 are arranged on the outer surface of the synchronous belt of the pulley group 74. A plurality of top columns 76 are symmetrically and rotatably arranged on both sides of the bottom inside the pedal 44. A contact bar 761 is arranged on the outer surface of each top column 76 close to the synchronous belt. The contact bar 761 is rotatably matched with the impact bar 75, so as to realize the rotation of the top column 76. A plurality of symmetric massage columns 77 are slidably penetrated through the top of the pedal 44. The massage columns 77 are made of rubber material. Each massage column 77 corresponds to each top column 76 above. The massage column 77 is in contact with the top column 76. The adjacent surfaces of the two are inclined and completely fit. A rotating shaft 78 is arranged between the rotation position of each top column 76 and the bottom inside the pedal 44. The rotating shaft 78 ensures the smooth rotation of the top column 76. A torsion spring 79 is arranged between each rotating shaft 78 and the corresponding top column 76. The torsion spring 79 provides the elastic force required for the top column 76 to reset; when the pulley group 74 runs reciprocally, the impact bar 75 continuously impacts the contact bar 761. The contact bar 761 rotates under the impact force and drives the top column 76 to rotate. The top column continuously pushes the massage column 77 according to its inclined surface. Each massage column 77 forms a wavy and orderly undulating shape to activate the lower limb tendons and promote blood circulation and muscle vitality during the rehabilitation process.

[0038] Before exercising the lower limb muscles of patients with spastic paraplegia, first abut the base 21 against the rear top surface of the hospital bed (i.e., the mobile bed 1), thread the threaded positioning plate 22 through the base 21, and fix the two with fasteners, so that the two are firmly fixed to the rear part of the mobile bed 1 to complete the installation of the device; After installation, the patient lies flat on the hospital bed with the legs naturally relaxed. The leg strap 6 and the foot strap 61 on the pedal 44 are respectively fixed on the patient's calf and foot. After that, according to the patient's rehabilitation needs, turn the adjusting screw 24 to adjust the rotation height of the lifting frame 23 to adapt to the body positions and rehabilitation stages of different patients. When the adjusting screw 24 rotates clockwise, it drives the lifting frame 23 to rotate downward, and when it rotates counterclockwise, it moves upward. The swing adjustment group 4 at the top of the lifting frame 23 will move along with it to ensure the patient's comfort and achieve the best exercise effect. To simulate the lower limb movement states of patients in different environments, pull out the pull rod 35 outward. The first spring 36 will immediately stretch and deform, and the pull rod 35 will no longer block the positioning disk 33. At this time, the positioning disk 33 can rotate, that is, the overall angle of the protective cover 31 can be changed. When necessary, the medical staff support the side of the protective cover 31 and push the protective cover 31 left or right, so that the cylindrical gear 34 on the lifting frame 23 rotates and meshes with the mating teeth 32, realizing the change of the overall angle of the swing adjustment group 4. After the adjustment is completed, release the pull rod 35, and the pull rod 35 will reset with the contraction force of the first spring 36 and re-block the positioning disk 33 to ensure the fixed position of the protective cover 31. Above, the preparation work is completed. Start the motor 313. The motor 313 drives the first pinion 312 to drive the large gear 311 to rotate, and then the entire drive group 3 starts to operate. Synchronously, the central shaft of the large gear 311 will drive the swing plate 41 to swing and rotate accordingly, and the pedal 44 on the swing plate 41 will move together. The patient's lower limbs will perform knee flexion and extension movements when the swing plate 41 rotates. In addition, to ensure the safety of the patient during the exercise process, the threaded rod 53 can be rotated clockwise to move downward on the top of the protective cover 31. It drives the tapered column 54 to move downward. The tapered part of the tapered column 54 finally contacts the deceleration pressing plate 5, so that the deceleration pressing plate 5 contacts the surface of the large gear 311, generating frictional force to prevent the excessive movement of the swing plate 41 and protect the safety of the patient's lower limbs. To give full play to the exercise effect, the medical staff can rotate the sector-shaped pusher 436. The sector-shaped pusher 436 will contact the pusher 434. The pusher 434 slides into the guide frame 435 along the guide groove under the contact force, and its inclined surface will gradually contact the limiting ring 432. After the sector-shaped pusher 436 completely rotates to cover the guide groove, the pusher 434 also slides along the positioning rod and squeezes open two adjacent limiting rings 432, so that the two slide outward from the positioning part along the limiting groove. Moreover, before that, the patient can lift or lower the leg to make the slide seat 43 slide along the guide post 42 to change the lifting height of the patient's leg. After adjusting to the appropriate height, the limiting ring 432 will also be squeezed to the extreme position by the pusher 434 and stuck between two adjacent limiting rods 437 outside the swing rod. During this process, the second spring 433 will contract accordingly. When the height of the slide seat 43 needs to be adjusted later, rotate the sector-shaped pusher 436 again to make it no longer cover the guide groove, and the second spring 433 will stretch and reset and drive the limiting frame to return to its original position. For patients whose lower limb strength has gradually recovered, they can carry out independent exercises under the guidance of medical staff. While swinging their lower limbs, the patients can step on the pedal 44 in a way of stepping back. The pedal 44 will drive the gear ring 7 to rotate, making the gear ring 7 rotate and mesh with the second small gear 71. The second small gear 71 will drive the transmission roller and the bevel gear 72 to rotate. The two bevel gears 72 will drive the stable shaft 73 to rotate through rotational meshing. When the rotating stable shaft 73 drives the pulley set 74 to operate, the impact strip 75 of the synchronous belt on it will continuously impact the contact strip 761. The contact strip 761 will rotate under the impact force and drive the top column 76 to rotate. The top column 76 will continuously push the massage column 77 according to its inclined plane. Each massage column 77 will form a wave-like and orderly undulating shape, so as to activate the tendons and veins of the lower limbs and promote blood circulation.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A training device for improving the lower limb muscles of patients with spastic paraplegia, comprising a mobile bed (1), the mobile bed (1) being a mounting carrier, characterized in that: The mobile bed (1) also comprises a support rod (11), an angle adjustment group (2), a base (21), a threaded positioning plate (22), a lifting frame (23), an adjusting screw (24), a driving group (3), a swing adjustment group (4), a leg strap (6) and a foot strap (61). The two sides of the top of the mobile bed (1) are fixed with support rods (11) protruding upwards. The rear of the mobile bed (1) is equipped with an angle adjustment group (2). The angle adjustment group (2) comprises a base (21) abutting against the rear top surface of the mobile bed (1), and a threaded positioning plate (22) with a thread penetrating through the base (21) and a lower part abutting against the rear bottom surface of the mobile bed (1). A tightening screw is provided at the threaded penetration of the threaded positioning plate (22) and the base (21). The base (21) has an upper side hinged with an inclined lifting frame (23), a limit slot is provided inside the lifting frame (23), an adjusting screw (24) is provided through a thread in the middle of the base (21), the upper part of the adjusting screw (24) slides into the limit slot and extends toward both sides of the limit slot to form a limit, a driving group (3) for realizing the patient's autonomous swinging of the lower limbs is rotatably installed on the top of the lifting frame (23), a swing adjustment group (4) for directly driving the patient's lower limbs to move is rotatably installed on both sides of the outside of the driving group (3), a leg strap (6) is symmetrically provided on the side of the pedal (44) of the swing adjustment group (4), and a foot strap (61) is provided on the other side of the pedal (44).

2. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 1, characterized in that: The driving group (3) comprises a protective cover (31), a large gear (311), a small gear (312), a motor (313), matching teeth (32), a positioning plate (33), a cylindrical gear (34), a pull rod (35) and a spring (36). The top of the lifting frame (23) is rotatably provided with a protective cover (31), a large gear (311) is rotatably provided on one side of the inner part of the protective cover (31), a small gear (312) is rotatably provided on one side of the inner part of the protective cover (31) corresponding to the lower part of the large gear (311), and the small gear (312) is rotatably meshed with the large gear (311). The inner part of the protective cover (31) is provided with a motor (313) corresponding to the front of the small gear (312), and the output shaft of the motor (313) is connected to the small gear (312). The protective cover (31) is connected with a gear one (312), the bottom of the protective cover (31) is provided with symmetrical matching teeth (32), and a cylindrical gear (34) is rotatably arranged below the matching teeth (32) in the upper part of the lifting frame (23), and the cylindrical gear (34) is rotatably engaged with the matching teeth (32). A locking plate (33) is arranged outside the rotation connection shaft between the protective cover (31) and the lifting frame (23), and a symmetrical notch is arranged at the lower part of the locking plate (33). A pull rod (35) is slidably arranged inside the cylindrical gear (34), and the penetration portion of the pull rod (35) abuts against the side of the lifting frame (23), and the upper end of the penetration portion is limited in one of the notches, and a spring one (36) is arranged at the sliding connection between the end of the pull rod (35) and the inside of the cylindrical gear (34).

3. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 2, characterized in that: The swing adjustment group (4) comprises a swing plate (41), a guide column (42), a slide seat (43) and a pedal (44). Both ends of the central axis of the large gear (311) penetrate the side of the protective cover (31). The penetrating portion of the central axis is provided with a swing plate (41), and the swing plates (41) on both sides are arranged in a staggered manner. The guide columns (42) are symmetrically arranged inside each swing plate (41). The slide seats (43) are slidably arranged between the guide columns (42) symmetrical in all directions, and the pedal (44) is rotatably arranged on the outward side of the slide seat (43).

4. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 3, characterized in that: The swing adjustment group (4) further comprises a base plate (431), a limiting ring (432), a second spring (433), a pusher (434), a guide frame (435), a fan-shaped pusher (436) and a limit rod (437). The base plate (431) is fixed to the side of the slide seat (43) away from the pedal (44). A symmetrical positioning member is provided on the outward side of the base plate (431), and a positioning rod is provided at the middle and lower position of the side. The outsides of the two positioning members are both slidably penetrated by a limiting ring (432). The two limiting rings (432) are close to each other. A second spring (433) is provided between the rod-shaped portion inside each limiting ring (432) and the corresponding positioning member. A pusher (434) having an end in a converging inclined surface is slidably provided on the side of the base plate (431). The inclined portion of the pusher (434) is in sliding contact with the outsides of the two limiting rings (432). A guide frame (435) is fixed to the outward side of the base plate (431). Limiting grooves adapted to the width of the outer contour of the limiting ring (432) are opened on both sides of the upper part of the guide frame (435). A guide groove adapted to the width of the outer contour of the pushing member (434) is opened on the lower part of the guide frame (435). Initially, the lower part of the pushing member (434) slides and protrudes outside the guide groove. A fan-shaped pushing member (436) is rotatably arranged on the outside of the guide frame (435). The lower part of the fan-shaped pushing member (436) extends to the side of the guide frame (435). The extension of the fan-shaped pushing member (436) is rotatably connected to the side of the guide frame (435), and the extension is in rotational contact with the lower part of the pushing member (434). A plurality of limiting rods (437) are symmetrically arranged on both sides of the outside of the swing plate (41). When the limiting ring (432) slides out of the limiting groove, its outer part is stuck between two adjacent limiting rods (437).

5. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 4, characterized in that: The extended portion of the fan-shaped push piece (436) is provided with anti-slip grooves on its outer surface.

6. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 5, characterized in that: The invention also comprises a deceleration pressure plate (5), a guide rod (51), a spring three (52), a threaded rod (53) and a cone column (54). The deceleration pressure plate (5) is slidably arranged at a position close to the large gear (311) in the upper part of the protective cover (31). The guide rod (51) is symmetrically arranged on a side of the protective cover (31) away from the large gear (311). The interior of the deceleration pressure plate (5) is slidably connected to the guide rod (51). The spring three (52) is arranged between the guide rod (51) and the deceleration pressure plate (5). The threaded rod (53) is arranged through the top thread of the protective cover (31). The lower part of the threaded rod (53) extends into the protective cover (31). The bottom of the extending part is provided with a cone column (54). When the cone column (54) moves downward, its cone-shaped part contacts the deceleration pressure plate (5), so that the side of the deceleration pressure plate (5) and the surface of the large gear (311) generate friction, thereby achieving deceleration.

7. A training device for improving lower limb muscles of patients with spastic paraplegia as claimed in claim 6, characterized in that: The invention also includes a ring gear (7), a second pinion gear (71), a transmission shaft (711), a bevel gear (72), a stabilizing shaft (73), a pulley group (74), an impact bar (75), a top column (76), a touch bar (761), a massage column (77), a rotating shaft (78) and a torsion spring (79). The ring gear (7) is rotatably arranged at a position near the pedal (44) outside the slide seat (43). The ring gear (7) is connected to the rotating shaft of the pedal (44). The pedal (44) is rotatably arranged below one side of the ring gear (7). 1), the second pinion gear (71) is rotatably engaged with the upper gear ring (7), a horizontal transmission shaft (711) is rotatably arranged inside the pedal (44), the transmission shaft (711) is connected to the central axis of the second pinion gear (71), there are two bevel gears (72), the first bevel gear (72) is arranged at the end of the transmission shaft (711) away from the pinion gear, a vertical stabilizing shaft (73) is rotatably arranged below the bottom of the pedal (44) near the transmission shaft (711), and a second bevel gear (72) is arranged on the upper part of the stabilizing shaft (73), The bevel gears (72) in two directions are rotatably meshed, a pulley group (74) is rotatably arranged at the middle position of the inner bottom of the pedal (44), one pulley of the pulley group (74) is connected to the lower part of the stabilizing shaft (73), a synchronous belt of the pulley group (74) is symmetrically arranged with a plurality of impact strips (75), and a plurality of top columns (76) are symmetrically and rotatably arranged on both sides of the inner bottom of the pedal (44), and a touch strip (761) is arranged on the outer surface of each top column (76) near the synchronous belt, and the touch strip (761) and the impact strip (75) are rotatably arranged. The top column (76) is combined to realize the rotation of the top column (76). A plurality of symmetrical massage columns (77) are slidably arranged on the top of the pedal (44). Each massage column (77) corresponds to the top of each top column (76). The massage columns (77) and the top column (76) are in contact with each other, and the adjacent surfaces of the two are inclined and completely fitted. A rotating shaft (78) is arranged between each top column (76) and the rotation point at the bottom of the pedal (44), and a torsion spring (79) is arranged between each rotating shaft (78) and the inside of the corresponding top column (76).

8. The training device for improving the lower limb muscles of patients with spastic paraplegia as claimed in claim 7, characterized in that: When the pulley assembly (74) reciprocates, the impact strip (75) continuously impacts the touch strip (761), and the touch strip (761) rotates due to the impact force and drives the top column (76) to rotate, and the top column (76) continuously pushes the massage column (77) according to its inclined surface, and each massage column (77) forms an orderly undulating wave shape to activate the tendons and veins of the lower limbs.

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