Adjustable leg medical rehabilitation training chair

Abstract

The present application relates to the technical field of medical rehabilitation equipment, and discloses an adjustable leg medical rehabilitation training chair, which comprises a platform, a training chair body is installed on one side above the platform through a support frame, a leg rehabilitation training mechanism is arranged at one end of the training chair body above the platform, the leg rehabilitation training mechanism comprises two knee joint movable structures and one ankle joint movable structure, the knee joint movable structure is used for upwardly lifting the knee joint and swinging the lower limbs during lifting, and the ankle joint movable structure is used for passive rehabilitation training in the early stage after operation and active rehabilitation training in the later stage. The knee joint movable structure and the ankle joint movable structure can be linked in the present application, the hip joint, the knee joint and the ankle joint of the lower limbs of the patient can be effectively moved during passive rehabilitation training, the magnetic flywheel in the ankle joint movable structure can adjust the resistance according to the rehabilitation degree of the patient during active rehabilitation training, and the present application is suitable for rehabilitation training of patients in different periods after operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical rehabilitation equipment, and particularly relates to an adjustable leg medical rehabilitation training chair. BACKGROUND

[0002] During postoperative recovery, if the legs of a patient with leg injury are long-term lack of exercise, muscle atrophy will occur, which affects blood circulation. At this time, the patient needs to be subjected to leg rehabilitation training. Leg rehabilitation training is an important means to help postoperative patients recover leg function, promote recovery of muscle strength, help patients recover joint activity and ultimately recover the ability to walk, climb stairs and other daily life abilities.

[0003] According to the search, the patent document with the publication number CN113288716B provides an intelligent manufacturing adjustable leg medical rehabilitation training chair. In the chair, the legs of a patient are placed on a bracket. The bracket is driven to rotate around a fixed shaft by the cooperation of a drive gear, a three-link mechanism, a sliding block and a push rod, so as to drive the user's legs to open and close, stretch the leg muscles and perform rehabilitation training.

[0004] In the above-mentioned scheme, the patient's legs are placed on the bracket. The bracket can only open outward and close inward, which makes the patient's legs only open and close. The patient's legs can only be stretched. During the stretching training, the patient's hip joint can be moved, while the knee joint and ankle joint of the leg are relatively stationary. The knee joint and ankle joint do not move effectively, and the training effect is not good. The patient's leg recovery speed is slow. SUMMARY

[0005] The present application aims to provide an adjustable leg medical rehabilitation training chair to solve the problem of the inability of the knee joint and ankle joint to move and the slow recovery speed of the patient's leg.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The adjustable leg medical rehabilitation training chair comprises a platform, a training chair body is installed on one side above the platform through a support frame, an oil cylinder is installed between the platform and the training chair body, a leg rehabilitation training mechanism is arranged at one end of the training chair body above the platform, the leg rehabilitation training mechanism comprises two knee joint movement structures and an ankle joint movement structure, the knee joint movement structure is used for lifting the knee joint upward and swinging the lower limbs when lifting, the ankle joint movement structure is used for passive rehabilitation training in the early stage after operation and active rehabilitation training in the later stage, and the two knee joint movement structures and the ankle joint movement structure are used for simultaneously moving the knee joint, the ankle joint and the hip joint of a patient in cooperation; the knee joint movement structure comprises a U-shaped frame, the U-shaped frame is detachably connected to the platform, a sliding cylinder is fixed to the U-shaped frame, the upper end of the sliding cylinder extends above the U-shaped frame, a sliding rod is movably connected in the sliding cylinder, a massage head is fixed to the top end of the sliding rod, the longitudinal cross section of the massage head is in the shape of an isosceles triangle, and a plurality of popliteal fossa massage balls are uniformly and rollingly connected to the upper end surface of the massage head.

[0008] As a further scheme of the present application, an electric guide rail is embedded and installed at the middle position of one side of the top of the platform, a guide block is slidably connected to the electric guide rail, and sliding grooves are formed in the two sides of the top of the platform corresponding to the electric guide rail, and sliding blocks are slidably connected to the two sliding grooves.

[0009] As a further scheme of the present application, the training chair body comprises a backrest, a seat and a small leg support, the backrest and the seat are rotatably connected through a rotating shaft, the bottom end of the oil cylinder is rotatably connected to the platform, and the top end of the oil cylinder is rotatably connected to the backrest, the front end of the seat is two horizontally extending supports, the small leg supports are provided in two, the two small leg supports are fixed and connected to the two supports at the front end of the seat through bolts, and a square hole is reserved between the two small leg supports.

[0010] As a further scheme of the present application, two guide grooves are symmetrically formed in the cylinder wall of the sliding cylinder, the guide grooves comprise vertical segments and arc upward segments, guide rods are fixed to one side of the sliding rod corresponding to the two guide grooves, and one end of each of the two guide rods is inserted into the guide groove on the corresponding side.

[0011] As a further scheme of the present application, the lower end of the sliding rod extends below the sliding cylinder, a wheel seat is arranged at the bottom end of the sliding rod, a roller is installed below the wheel seat through a support, a rotating table is rotatably connected to the top of the wheel seat, the bottom end of the sliding rod is fixed to the rotating table, a spring is sleeved on the lower end of the sliding rod, the bottom end of the spring is fixed to the wheel seat, and the top end of the spring is fixed to the sliding cylinder through a connecting ring.

[0012] As a further scheme of the present application: the ankle joint movement structure comprises a sliding table, the sliding table comprises a mounting table at a middle position and front forks arranged on both sides of the mounting table, an adjustable gravity wheel is arranged on the mounting table through a gravity wheel mounting seat, one end of each of the two front forks is detachably connected with a protruding block through a connecting rod, one side of the protruding block is inclined upward and forms a slope, and a wheel groove is formed in the slope.

[0013] As a further scheme of the present application: the adjustable gravity wheel comprises a circular ring, a magnetic flywheel is arranged in the circular ring, side plates are fixedly connected to both sides of the circular ring, a flywheel shaft is arranged on the magnetic flywheel, both ends of the flywheel shaft are rotatably connected to the side plates on the corresponding sides, an arc-shaped magnet is arranged in the circular ring below the magnetic flywheel, the bottom end of the arc-shaped magnet is rotatably connected to the circular ring through a rotary joint, and an electric push rod is arranged between the top end of the arc-shaped magnet and the inner wall of the circular ring.

[0014] As a further scheme of the present application: both ends of the flywheel shaft are rotatably inserted through the side plates on the corresponding sides, lock discs are arranged on the outer sides of the two side plates and correspond to the sides of the flywheel shaft, lock bolts are arranged between the lock discs and the side plates on the corresponding sides, for connecting and fixing the lock discs and the side plates, connecting barrels are fixed to the outer sides of the two lock discs, and both ends of the flywheel shaft are inserted and fixed in the connecting barrels on the corresponding sides.

[0015] As a further scheme of the present application: a crank is arranged on the outer side of each of the two connecting barrels, a lock barrel is fixed to one end of the crank, one end of each of the two connecting barrels is rotatably inserted into the lock barrel on the corresponding side, a lock bolt is arranged on the lock barrel, for locking the lock barrel and the connecting barrel together, a steering barrel is fixed to the other end of the crank, a pedal is rotatably connected to one side of the steering barrel, and a plurality of foot sole massage balls are rotatably connected to the pedal.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] In the application, the knee joint movement structure and the ankle joint movement structure can be linked, when the foot in the ankle joint movement structure is pressed against and pushes the foot, the massage head in the knee joint movement structure can be lifted up synchronously, so that the lower limbs of the patient can be smoothly bent and stretched, the lower limbs of the patient can be evenly stressed, damage can be avoided, in the process of passive rehabilitation training, the hip joint, the knee joint and the ankle joint of the lower limbs of the patient can be effectively moved, and the patient does not need to exert force by himself, which is more friendly to the patient in the early stage after the operation, meanwhile, the massage head can be used for massage in the popliteal fossa of the knee joint, nerves and blood vessels are relaxed, blood flow of the lower limbs is promoted, the body recovery is beneficial, in active rehabilitation training, the training chair body can be adjusted correspondingly, the patient is more comfortable when sitting on the training chair to exercise, meanwhile, the magnetic flywheel in the ankle joint movement structure can adjust the resistance according to the rehabilitation degree of the patient, which is suitable for rehabilitation training of patients in different periods after the operation, and the adaptability of the product is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 It is a structural schematic view of the application in passive rehabilitation training.

[0020] Figure 2 It is a structural schematic view of the application in active rehabilitation training.

[0021] Figure 3 It is a structural schematic view of the training chair body in the application.

[0022] Figure 4 It is a structural schematic view of the platform in the application.

[0023] Figure 5 It is a structural schematic view of the leg rehabilitation training mechanism in the application.

[0024] Figure 6 It is a structural separation view of the knee joint movement structure in the leg rehabilitation training mechanism.

[0025] Figure 7 It is a structural schematic view of the ankle joint movement structure in the leg rehabilitation training mechanism.

[0026] Figure 8 It is a structural separation view of the adjustable gravity wheel in the ankle joint movement structure.

[0027] Figure 9 It is a connection schematic view of the magnetic flywheel and the ring in the adjustable gravity wheel.

[0028] Figure 10 For Figure 9 Enlarged view at A in the middle.

[0029] Reference sign annotation: 1 - platform, 11 - sliding groove, 12 - sliding block, 13 - electric guide rail, 14 - guide block, 2 - training chair body, 21 - chair back, 22 - chair surface, 23 - calf support, 24 - square hole, 25 - armrest, 26 - cushion, 3 - knee joint movement structure, 31 - U-shaped frame, 32 - roller, 33 - wheel seat, 34 - spring, 35 - guide groove, 36 - sliding rod, 37 - massage head, 38 - popliteal massage ball, 39 - guide rod, 310 - sliding cylinder, 311 - connecting ring, 312 - rotating table, 4 - ankle joint movement structure, 41 - sliding table, 42 - gravity wheel mounting seat, 43 - adjustable gravity wheel, 431 - circular ring, 432 - side plate, 433 - locking disc, 434 - connecting cylinder, 435 - crank, 436 - locking cylinder, 437 - steering cylinder, 438 - foot pedal, 439 - foot massage ball, 4310 - magnetic flywheel, 4311 - flywheel shaft, 4312 - rotating joint, 4313 - arc-shaped magnet, 4314 - electric push rod, 44 - connecting rod, 45 - protrusion, 5 - support frame, 6 - oil cylinder. DETAILED DESCRIPTION

[0030] The present application will be described in detail below with reference to the drawings, in which like or similar parts are designated with the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The embodiments listed in the present application are only used to illustrate the present application, and are not used to limit the scope of the present application. Any obvious modification or change made to the present application does not deviate from the spirit and scope of the present application.

[0031] Please refer to Figures 1-2 In the embodiment of the present application, an adjustable leg medical rehabilitation training chair comprises a platform 1, a training chair body 2 is installed on one side above the platform 1 through a support frame 5, an oil cylinder 6 is installed between the platform 1 and the training chair body 2, a leg rehabilitation training mechanism is arranged at one end of the training chair body 2 above the platform 1, the leg rehabilitation training mechanism comprises two knee joint movement structures 3 and one ankle joint movement structure 4, and the two knee joint movement structures 3 and the ankle joint movement structure 4 cooperate with each other to simultaneously move the hip joint, the knee joint and the ankle joint of a patient.

[0032] Please refer to Figures 3-4The training chair body 2 comprises a chair back 21, a chair surface 22 and a small leg support 23, the chair back 21 and the chair surface 22 are connected through a rotating shaft, the bottom end of the oil cylinder 6 is connected to the platform 1 and the top end of the oil cylinder 6 is connected to the chair back 21, the chair back 21 can be turned up or completely laid flat through the oil cylinder 6, the patient is inconvenient to move in two to three weeks after the operation, at this time, the chair back 21 is laid flat, and the patient lies flat on the training chair body 2 to carry out rehabilitation training.

[0033] The chair surface 22 is a rectangle structure, the rear end of the chair surface 22 is connected to the chair back 21 with a larger area, the patient's buttocks can be placed on the chair surface 22, the front end of the chair surface 22 is two forwardly extending horizontal supports, the patient's thighs are placed on the horizontal supports, the small leg support 23 is provided with two, the two small leg supports 23 are respectively connected and fixed to the two horizontal supports of the front end of the chair surface 22 through bolts, and square holes 24 are reserved at the connection positions of the two small leg supports 23 and the two horizontal supports of the front end of the chair surface 22, when the patient lies flat, the patient's thighs are located on the horizontal supports of the chair surface 22, the patient's small legs are located on the small leg supports 23, and at this time, the patient's knee joints are located directly above the square holes 24.

[0034] The chair back 21 and the chair surface 22 are both provided with armrests 25, the chair back 21 is provided with a back cushion 26 which is connected through a magic tape, and the position of the back cushion 26 is adjustable, when the patient lies flat, the back cushion 26 can be used as a pillow, and when the chair back 21 is turned up, the back cushion 26 can be used as a waist support.

[0035] A motorized guide rail 13 is embedded and installed at the middle position of one side of the top of the platform 1, a guide block 14 is slidably connected to the motorized guide rail 13, and two sliding grooves 11 are formed at the two sides of the top of the platform 1 corresponding to the motorized guide rail 13, and two sliding blocks 12 are slidably connected in the two sliding grooves 11.

[0036] Please refer to Figures 5-6 The knee joint movement structure 3 comprises a U-shaped frame 31, the U-shaped frame 31 is detachably connected to the platform 1, the position of the U-shaped frame 31 corresponds to the position of the square hole 24, a sliding cylinder 310 is fixed to the U-shaped frame 31, the upper end of the sliding cylinder 310 extends above the U-shaped frame 31, a sliding rod 36 is movably connected in the sliding cylinder 310, the sliding rod 36 can slide up and down in the sliding cylinder 310 or rotate freely, two guide grooves 35 are symmetrically formed in the cylinder wall of the sliding cylinder 310, the guide grooves 35 comprise vertical sections and arc-shaped upward sections, a guide rod 39 is fixed to one side of the rod body of the sliding rod 36 corresponding to the two guide grooves 35, one end of the two guide rods 39 is respectively inserted into the guide groove 35 on the corresponding side, and the guide rod 39 is slidably connected in the guide groove 35.

[0037] The top end of the sliding rod 36 is fixed with a massage head 37, the longitudinal cross section of the massage head 37 is isosceles triangle, the upper end surface of the massage head 37 is uniformly and rollingly connected with a plurality of popliteal fossa massage balls 38, the massage head 37 is located in the square hole 24, the inner side area of the human knee joint is diamond-shaped, which is medically called popliteal fossa, there are many blood vessels and nerves in the popliteal fossa, and the popliteal fossa is a key part connected with the lower limbs, the longitudinal cross section of the massage head 37 is isosceles triangle, which can well adapt to the structure of the popliteal fossa, the massage head 37 can closely contact the popliteal fossa and massage the popliteal fossa to dredge blood vessels.

[0038] The lower end of the sliding rod 36 extends below the sliding cylinder 310, the bottom end of the sliding rod 36 is provided with a wheel seat 33, the lower end of the wheel seat 33 is mounted with a roller 32 through a support, the top of the wheel seat 33 is rotationally connected with a rotating table 312, the bottom end of the sliding rod 36 is fixed on the rotating table 312, the lower end of the sliding rod 36 is sleeved with a spring 34, the bottom end of the spring 34 is fixed on the wheel seat 33, and the top end of the spring 34 is fixed on the sliding cylinder 310 through a connecting ring 311.

[0039] In the embodiment, when the sliding rod 36 moves upward, the rod body will be deflected under the action of the sliding cylinder 310 and the guide groove 35, thereby driving the massage head 37 to synchronously deflect when rising, the massage head 37 abuts against the popliteal fossa of the patient, when the massage head 37 deflects outward, the knee joint will synchronously evert, the knee joint connects the thigh and the shank, when the knee joint is lifted, it synchronously everts, thereby driving the thigh and the shank to synchronously move outward, at the same time, the popliteal fossa massage balls 38 on the massage head 37 will rub and roll with the joint when the knee joint everts, the blood vessels and nerves at the joint are massaged by the rolling massage balls.

[0040] Please refer to Figures 7-10 , the ankle joint movement structure 4 comprises a sliding table 41, the sliding table 41 comprises a mounting table located at a middle position and two front forks arranged on both sides of the mounting table, the two front forks of the sliding table 41 are respectively connected and fixed with the two sliding blocks 12, and the mounting table of the sliding table 41 is connected and fixed with the guide block 14, the sliding table 41 can be moved back and forth on the platform 1 through the electric guide rail 13, an adjustable gravity wheel 43 is mounted on the upper side of the mounting table of the sliding table 41 through a gravity wheel mounting seat 42, one end of each of the two front forks of the sliding table 41 is detachably connected with a protruding block 45 through a connecting rod 44, the protruding block 45 is correspondingly arranged with the roller 32, and the side of the protruding block 45 facing the roller 32 is obliquely upwardly inclined and forms a slope surface, a wheel groove is formed in the slope surface, and the roller 32 is limitingly rolled in the wheel groove.

[0041] The adjustable gravity wheel 43 comprises a circular ring 431, a magnetic flywheel 4310 is arranged in the circular ring 431, both sides of the circular ring 431 are clamped and fixed with side plates 432, a flywheel shaft 4311 is arranged on the magnetic flywheel 4310, both ends of the flywheel shaft 4311 are rotatably connected to the side plates 432 on the corresponding sides, an arc-shaped magnet 4313 is arranged below the magnetic flywheel 4310 in the inside of the circular ring 431, the arc-shaped magnet 4313 is matched with the wheel surface of the magnetic flywheel 4310, the bottom end of the arc-shaped magnet 4313 is rotatably connected to the circular ring 431 through a rotary joint 4312, and an electric push rod 4314 is arranged between the top end of the arc-shaped magnet 4313 and the inner wall of the circular ring 431.

[0042] Both ends of the flywheel shaft 4311 are rotatably penetrated through the side plates 432 on the corresponding sides, both sides of the two side plates 432 are provided with locking discs 433 corresponding to one side of the flywheel shaft 4311, locking bolts are arranged between the locking discs 433 and the side plates 432 on the corresponding sides, for connecting and fixing the locking discs 433 and the side plates 432, so that the locking discs 433 cannot rotate freely any more, the outer sides of the two locking discs 433 are fixedly provided with connecting barrels 434, both ends of the flywheel shaft 4311 are inserted and fixed in the connecting barrels 434 on the corresponding sides, the outer sides of the two connecting barrels 434 are provided with cranks 435, one end of each crank 435 is fixedly provided with a locking barrel 436, one end of each connecting barrel 434 is rotatably inserted into the locking barrel 436 on the corresponding side, the locking barrel 436 is provided with a locking bolt, for locking the locking barrel 436 and the connecting barrel 434 together, so that they cannot rotate freely any more, the other end of each crank 435 is fixedly provided with a steering barrel 437, one side of the steering barrel 437 is rotatably connected with a pedal 438, and a plurality of foot sole massage balls 439 are uniformly and rollingly connected on the pedal 438.

[0043] In the embodiment, the directions of the two pedals 438 can be adjusted, and within two to three weeks after the operation, the patient can only lie down and cannot independently carry out rehabilitation training, and can only move the lower limbs through simple movements, at this time, the two pedals 438 are adjusted to the state as shown in FIG. 4b, the lower limbs are bent inward by pushing the shanks through the pedals 438, when the patient can sit up and has a certain activity ability, the pedals 438 are adjusted to the state as shown in FIG. 4c, and the patient independently carries out rehabilitation training by treading the pedals 438, in the later stage of the rehabilitation training, the activity ability of the lower limbs of the patient is gradually enhanced, at this time, the distance between the arc-shaped magnet 4313 and the magnetic flywheel 4310 can be controlled through the electric push rod 4314, the resistance during flywheel rotation is changed by controlling the distance, the flywheel resistance is timely increased as the leg strength of the patient is gradually enhanced, so that better rehabilitation training effect is achieved. Figure 1 Figure 2

[0044] Working principle: ​​

[0045] This device has two working states, which can be adjusted according to the patient's postoperative recovery level. During the two to three weeks after surgery, the patient has limited mobility and needs to rest in bed most of the time. At this time, the training chair body 2 can be adjusted to... Figure 1 In the state shown (passive rehabilitation training), the patient lies flat on the training chair with the patient's buttocks placed at the rear end of the chair seat 22, the patient's thighs placed on the two side supports at the front end of the chair seat 22, and the patient's lower legs placed on the two lower leg supports 23. After the patient is in position, the ankle joint movement structure 4 is moved to the side of the patient's foot via the electric guide rail 13. The two foot pedals 438 in the ankle joint movement structure 4 are adjusted so that the two foot pedals 438 are simultaneously pressed against the side of the patient's foot. After adjustment, the two foot pedals 438 are fixed in place by the cooperation of the locking disc 433 and the locking cylinder 436, so that they can no longer drive the crank 435 to rotate.

[0046] Then, the electric guide rail 13 is activated again to move the ankle joint mobility structure 4 back and forth. When the ankle joint mobility structure 4 moves to the left, the foot pedal 438 pushes the patient's lower leg to the left against the sole of the foot. At the same time, when the ankle joint mobility structure 4 moves to the left, the cooperation between the protrusion 45 and the roller 32 will drive the knee joint mobility structure 3 to move upward. The massage head 37 in the knee joint mobility structure 3 is placed against the popliteal fossa area on the inside of the patient's knee joint. When the massage head 37 moves upward, it will lift the knee joint, causing the patient's thigh and lower leg to bend inward, and the ankle joint... The joint movement structure 4 and the knee joint movement structure 3 work together to perform flexion and extension exercises on the patient's legs. In addition, the massage head 37 in the knee joint movement structure 3 will deflect outward during the upward lifting process through the cooperation of the slide rod 36, slide cylinder 310 and guide groove 35. When the massage head 37 deflects outward, it will drive the leg to deflect outward at the same time. When the patient's leg performs flexion and extension exercises, it swings outward in sync, thereby activating the hip joint. In summary, in the supine position, this device can simultaneously activate the patient's hip joint, knee joint and ankle joint.

[0047] Three weeks after the surgery, when the patient has regained some mobility, the device can be adjusted to the following position: Figure 2The shown state (active rehabilitation training), through the oil cylinder 6, the chair back 21 is pushed to one side, the amplitude of the lifting is adjusted according to the needs of the patient, the patient sits on the chair surface 22, and the small leg support 23 and the knee joint movement structure 3 are removed at the same time, so that the patient's small leg is in a suspended state when sitting, then move the ankle joint movement structure 4 and adjust the foot pedal 438, so that the patient's two feet can step on the foot pedal 438 at the same time, unlock the crank 435, so that the foot pedal 438 can drive the magnetic flywheel 4310 to rotate when stepping on, the patient exercises independently, and as the rehabilitation degree is continuously improved, the resistance of the magnetic flywheel 4310 can be appropriately increased, the resistance control is realized through the cooperation of the electric push rod 4314 and the arc-shaped magnet 4313, and in the independent training, the lower limb joints are fully moved, and the massage ball arranged at the instep massages the instep, promotes blood circulation, and accelerates rehabilitation.

[0048] It is obvious to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0049] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An adjustable leg medical rehabilitation training chair, comprising a platform (1), a training chair body (2) is installed on one side above the platform (1) through a support frame (5), characterized in that, The training chair body (2) comprises a backrest (21), a seat (22) and a shank support (23), an upper end of the platform (1) corresponding to the training chair body (2) is provided with a leg rehabilitation training mechanism, the leg rehabilitation training mechanism comprises two knee joint movable structures (3) and an ankle joint movable structure (4), the knee joint movable structure (3) is used for lifting the knee joint upward and swinging the lower limbs when being lifted, the ankle joint movable structure (4) is used for passive rehabilitation training in the early stage after surgery and active rehabilitation training in the later stage, and the two knee joint movable structures (3) and the ankle joint movable structure (4) are used for simultaneously moving the knee joint, the ankle joint and the hip joint of a patient in cooperation. The front end of the seat (22) is provided with two horizontal supports extending forward, the shank supports (23) are provided in two, and the two shank supports (23) are respectively connected and fixed with the two supports at the front end of the seat (22) through bolts, and square holes (24) are reserved between the supports and the shank supports (23) to pass through when the knee joint movable structure (3) moves up and down. The knee joint movable structure (3) comprises a U-shaped frame (31), the U-shaped frame (31) is detachably connected on the platform (1), a sliding cylinder (310) is fixed on the U-shaped frame (31), the upper end of the sliding cylinder (310) extends above the U-shaped frame (31), a sliding rod (36) is movably connected in the sliding cylinder (310), a massage head (37) is fixed at the top end of the sliding rod (36), the longitudinal cross section of the massage head (37) is an isosceles triangle, and a plurality of popliteal fossa massage balls (38) are uniformly and rollingly connected on the upper end surface of the massage head (37); two guide grooves (35) are symmetrically formed in the cylinder wall of the sliding cylinder (310), the guide groove (35) comprises a vertical section and an arc upward section, and a guide rod (39) is fixed on one side of the rod body of the sliding rod (36) corresponding to the two guide grooves (35). When the sliding rod (36) moves upward, the rod body is deflected under the action of the sliding cylinder (310) and the guide groove (35), so as to drive the massage head (37) to be deflected synchronously when rising, and when the massage head (37) is deflected outward, the knee joint is deflected synchronously, so as to drive the thigh and the shank to move outward synchronously.

2. The adjustable leg medical rehabilitation training chair according to claim 1, characterized in that, An electric guide rail (13) is embedded and installed at the middle position of one side of the top of the platform (1), a guide block (14) is slidably connected on the electric guide rail (13), and slide grooves (11) are formed in the top of the platform (1) corresponding to the two sides of the electric guide rail (13).

3. The adjustable leg medical rehabilitation training chair according to claim 1, characterized in that, The backrest (21) and the seat (22) are rotatably connected through a rotating shaft, an oil cylinder (6) is installed between the platform (1) and the training chair body (2), the bottom end of the oil cylinder (6) is rotatably connected on the platform (1), and the top end of the oil cylinder (6) is rotatably connected on the backrest (21).

4. The adjustable leg medical rehabilitation training chair according to claim 2, characterized in that, The lower end of the slide rod (36) extends below the slide cylinder (310), and the bottom end of the slide rod (36) is provided with a wheel seat (33), the lower side of the wheel seat (33) is provided with a roller (32) through a support, the top of the wheel seat (33) is rotatably connected with a rotating table (312), the bottom end of the slide rod (36) is fixed on the rotating table (312), the lower end of the slide rod (36) is sleeved with a spring (34), the bottom end of the spring (34) is fixed on the wheel seat (33), and the top end of the spring (34) is fixed on the slide cylinder (310) through a connecting ring (311).

5. The adjustable leg medical rehabilitation training chair according to claim 4, characterized in that, The ankle joint moving structure (4) comprises a sliding table (41), the sliding table (41) comprises a mounting table at a middle position and two front forks arranged on both sides of the mounting table, the two front forks of the sliding table (41) are connected with two sliding blocks (12) respectively, the mounting table of the sliding table (41) is connected with a guide block (14), the sliding table (41) is moved left and right on the platform (1) through an electric guide rail (13), an adjustable gravity wheel (43) is arranged on the upper side of the mounting table through a gravity wheel mounting seat (42), one end of each of the two front forks is detachably connected with a protruding block (45) through a connecting rod (44), the protruding block (45) is arranged in correspondence with the roller (32), one side of the protruding block (45) is inclined upward and forms a slope, and a wheel groove is formed in the slope; and the roller (32) is limited to roll in the wheel groove.

6. The adjustable leg medical rehabilitation training chair according to claim 5, characterized in that, The adjustable gravity wheel (43) comprises a ring (431), a magnetic flywheel (4310) is arranged in the ring (431), side plates (432) are fixedly connected to the two sides of the ring (431), a flywheel shaft (4311) is arranged on the magnetic flywheel (4310), the two ends of the flywheel shaft (4311) are rotatably connected to the side plates (432) on the corresponding sides, an arc-shaped magnet (4313) is arranged in the ring (431) below the magnetic flywheel (4310), the bottom end of the arc-shaped magnet (4313) is rotatably connected to the ring (431) through a rotary joint (4312), and an electric push rod (4314) is arranged between the top end of the arc-shaped magnet (4313) and the inner wall of the ring (431).

7. The adjustable leg medical rehabilitation training chair according to claim 6, characterized in that, The two ends of the flywheel shaft (4311) are rotatably inserted through the side plates (432) on the corresponding sides, lock discs (433) are arranged on the sides of the flywheel shaft (4311) outside the two side plates (432), lock bolts are arranged between the lock discs (433) and the side plates (432) on the corresponding sides, the lock bolts are used for connecting and fixing the lock discs (433) and the side plates (432), connecting barrels (434) are fixed to the outer sides of the two lock discs (433), and the two ends of the flywheel shaft (4311) are inserted and fixed in the connecting barrels (434) on the corresponding sides.

8. The adjustable leg medical rehabilitation training chair according to claim 7, characterized in that, Both outer sides of the connecting barrels (434) are provided with cranks (435), one end of each crank (435) is fixedly provided with a lock barrel (436), one end of each connecting barrel (434) is rotatably inserted into the corresponding lock barrel (436), the lock barrel (436) is provided with a locking bolt, which is used for locking the lock barrel (436) and the connecting barrel (434) together, the other end of the crank (435) is fixedly provided with a steering barrel (437), one side of the steering barrel (437) is rotatably connected with a foot pedal (438), a plurality of sole massage balls (439) are uniformly and rollably connected on the foot pedal (438).

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