Rehabilitation machine for passive movement of myasthenia gravis patient

Abstract

The invention relates to the field of medical instruments, in particular to a rehabilitation machine for passive movement of a myasthenia gravis patient. According to the device, the shanks of the patient can be fully pressed while the shanks, heels and knee joints of the patient fully move, so that the rehabilitation exercise efficiency and effect of the patient can be improved. A rehabilitation machine for passive movement of a myasthenia gravis patient comprises a bottom frame, a seat plate and the like. The top of the bottom frame is fixedly connected with a seat plate. A patient sits on the sitting plate, two feet are placed on the front supporting plate and the rear supporting plate, a nursing person starts a servo motor, the servo motor enables the shanks of the patient to swing up and down in a reciprocating mode, and the heels and knee joints of the patient can move up and down in a reciprocating mode; therefore, the shanks, the heels and the knee joints of the patient can perform sufficient rehabilitation exercises, and the patient can effectively perform rehabilitation exercises.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a passive exercise rehabilitation machine for patients with myasthenia gravis. Background Technology

[0002] Myasthenia gravis is characterized by weakness and fatigue in any muscle that is under voluntary control. The cause is an obstruction of normal signal transmission between nerves and muscles. Patients with myasthenia gravis typically experience weakness in the leg muscles, leading to an inability to voluntarily control muscle movement and thus affecting their ability to walk. Therefore, patients with myasthenia gravis usually undergo passive rehabilitation training to strengthen their muscles.

[0003] Patients with myasthenia gravis typically use rehabilitation machines for exercise. Current myasthenia gravis rehabilitation machines generally involve swinging the patient's legs, which is a relatively simple exercise method and does not facilitate comprehensive rehabilitation of the patient's legs, resulting in poor rehabilitation effects. After the leg swinging exercise, caregivers need to manually massage the patient's legs, which slows down the recovery process. Summary of the Invention

[0004] In view of this, the present invention provides a passive exercise rehabilitation machine for patients with myasthenia gravis that can fully press on the patient's lower leg while allowing the patient's lower leg, heel and knee joint to move fully, thereby improving the efficiency and effect of the patient's rehabilitation exercise.

[0005] The technical solution is: a passive exercise rehabilitation machine for patients with myasthenia gravis, comprising a base frame, a seat, armrests, a backrest, a footrest, a protective cover, a flexion-extension assembly, and a push assembly. The seat is fixedly connected to the top of the base frame, and two armrests are fixedly connected to the base frame. The two armrests are symmetrically arranged, and a backrest is fixedly connected between the two armrests. A footrest is fixedly connected to the lower part of the base frame, and a protective cover is fixedly connected to the lower side of each armrest. The flexion-extension assembly is mounted on the protective cover and connected to the armrests. The push assembly is mounted on the flexion-extension assembly and connected to the footrest and the base frame.

[0006] Furthermore, the bending and extending assembly includes a servo motor, a rotating shaft, gears, a fixed frame, a swing frame, a rack, a front support plate, and a rear support plate. A servo motor is fixedly connected to the outer wall of one of the protective covers. A rotating shaft is fixedly connected to the output shaft of the servo motor. Two gears are fixedly connected to the rotating shaft. The two gears are symmetrically arranged and are located inside the two protective covers respectively. A fixed frame is fixedly connected to the lower part of each of the two handrail frames. A swing frame is rotatably connected to each of the two fixed frames. A rack is fixedly connected to one end of each of the two swing frames. The rack meshes with the gear. A front support plate is rotatably connected to the lower part of each of the two swing frames. A rear support plate is rotatably connected to the lower part of each of the two swing frames.

[0007] Furthermore, the pushing assembly includes an active pulley, a rotating rod, a passive pulley, a transmission belt, protrusions, a support frame, and a pusher. The active pulley is fixedly connected to the rotating shaft, the rotating rod is rotatably connected to the support frame, the passive pulley is fixedly connected to the rotating rod, a transmission belt is wound between the active pulley and the passive pulley, two protrusions are fixedly connected to the rotating rod, the two protrusions are symmetrically arranged, and the two protrusions are respectively located below the two rear support plates. The support frame is fixedly connected to the top of the support frame, and a pusher is slidably connected to the support frame, the pusher contacting the two rear support plates.

[0008] Furthermore, it also includes a pressing assembly, which is mounted on a fixed frame and connected to a swing frame. The pressing assembly includes a swing arm, a guide plate, a massage frame, and a torsion spring. The lower parts of the two fixed frames are rotatably connected to the swing arm, and the two swing frames are fixedly connected to the guide plate. The two guide plates have guide grooves. The massage frame is rotatably connected between the two swing arms. The massage frame is provided with several massage balls. The massage frame is slidably connected to the guide grooves on the two guide plates. The massage frame is connected to the two swing arms with a torsion spring.

[0009] Furthermore, it also includes an ankle joint mobility component, which is mounted on the swing frame and connected to the massage frame and the front support plate. The ankle joint mobility component includes a limit frame, a fixing block, a fixing strip, a slider, a steel wire rope, and a return spring. Limit frames are fixedly connected to the lower sides of both swing frames. Fixing blocks are fixedly connected to both ends of the massage frame. Fixing strips are fixedly connected to the sides of both front support plates. A slider is slidably connected to the limit frame. One end of a steel wire rope is fixedly connected to the fixing block. The steel wire rope passes through the slider, and the other end of the steel wire rope is fixedly connected to the fixing strip. A return spring is connected between the slider and the limit frame.

[0010] Furthermore, it also includes a cylinder, a piston frame, and a return spring. Two cylinders are fixedly connected to the support bracket, and the two cylinders are arranged symmetrically. A piston frame is slidably connected between the two cylinders. The piston frame contacts two rear support plates, and a return spring is connected between the cylinder and the piston frame.

[0011] Furthermore, it also includes rollers. Two rollers are rotatably connected to the push frame. The two rollers are made of sponge material and are arranged symmetrically.

[0012] Furthermore, the piston frame consists of a fixed frame and two piston rods fixedly connected to the fixed frame, with the two piston rods on the fixed frame arranged symmetrically.

[0013] The beneficial effects are as follows: First, the patient sits on the seat board with both feet placed on the front and rear support boards. The caregiver starts the servo motor, which drives the gears and drive pulley to rotate. The rotation of the gears causes the patient's lower legs to swing upward. Then, the caregiver adjusts the servo motor, which drives the gears and drive pulley to rotate in the opposite direction. The reverse rotation of the gears causes the patient's lower legs to swing downward and return to their original position. The reverse rotation of the drive pulley causes the patient's heels and knees to move up and down repeatedly, allowing the patient's lower legs, heels, and knees to undergo sufficient rehabilitation exercises, thus enabling the patient to effectively perform rehabilitation exercises.

[0014] Second, the upward swing of the swing frame will cause the massage frame to move upward along the guide groove on the guide plate. The upward movement of the massage frame will press on the patient's calf. The downward swing of the swing frame will cause the guide plate to move downward and reset. The downward movement of the guide plate will cause the massage frame to move downward along the guide groove on the guide plate and reset. This process is repeated, and the massage frame continues to move up and down. It can fully exercise the patient's calf, heel and knee joint while fully pressing on the patient's calf, thereby improving the efficiency of the patient's rehabilitation exercise.

[0015] Third, when the massage frame moves upward, it pulls the steel cable, which straightens and causes the slider to move closer to the fixed bar. The straightened cable also pulls the front support plate upward, causing it to swing upward, which in turn causes the patient's foot to swing upward. When the massage frame moves downward to reset, it causes the fixed block to move downward to reset as well. Once the fixed block has moved downward and reset, it no longer pulls the steel cable, thus ceasing to pull the slider and fixed bar. The slider and fixed bar then move downward to reset, causing the front support plate to swing downward to reset. This downward swing of the front support plate causes the patient's foot to swing downward to reset. This process repeats continuously, providing ample rehabilitation exercises for the patient's calves, heels, knees, and feet, resulting in more comprehensive leg rehabilitation and improved recovery outcomes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the first partial three-dimensional structure of the flexion-extension component of the present invention.

[0018] Figure 3 This is a partial three-dimensional structural diagram of the driving component of the present invention.

[0019] Figure 4 This is a schematic diagram of a second partial three-dimensional structure of the flexion-extension component of the present invention.

[0020] Figure 5 For the present invention Figure 1 A magnified three-dimensional structural diagram at point A in the middle.

[0021] Figure 6 This is a three-dimensional structural diagram of the ankle joint mobility component of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the cylinder, piston frame, and return spring of the present invention.

[0023] Figure 8 This is a cross-sectional perspective view of the cylinder, piston frame, and return spring of the present invention.

[0024] Figure 9 For the present invention Figure 2 A magnified three-dimensional structural diagram at point B.

[0025] Reference numerals: 1_Base frame, 2_Seat plate, 3_Armrest frame, 4_Backrest plate, 5_Foot bracket, 6_Protective cover, 71_Servo motor, 72_Rotating shaft, 73_Gear, 74_Fixed frame, 75_Swing frame, 76_Rack and pinion, 77_Front support plate, 78_Rear support plate, 81_Driving pulley, 82_Rotating rod, 83_Passive pulley, 84_Transmission belt, 85_Protrusion, 86_Support frame, 87_Push frame, 91_Swing rod, 92_Guide plate, 93_Massage frame, 94_Torsion spring, 101_Limit frame, 102_Fixed block, 103_Fixed strip, 104_Slider, 105_Wire rope, 106_Reset spring, 111_Cylinder, 112_Piston frame, 113_Return spring, 12_Roller. Detailed Implementation

[0026] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0027] Example 1: Passive exercise rehabilitation machine for patients with myasthenia gravis, such as... Figures 1-5 and Figure 9 As shown, the device includes a base frame 1, a seat board 2, armrests 3, a backrest 4, a footrest 5, a protective cover 6, a flexion-extension assembly, and a push assembly. The seat board 2 is bolted to the top of the base frame 1. Two armrests 3 are riveted to the base frame 1. The two armrests 3 can limit the patient's position and facilitate more stable exercise. The two armrests 3 are symmetrically arranged. The backrest 4 is bolted between the two armrests 3. The backrest 4 can improve the patient's comfort during exercise. The footrest 5 is bolted to the lower part of the base frame 1. The protective cover 6 is bolted to the lower side of each of the two armrests 3. The flexion-extension assembly for swinging the patient's lower leg is set on the protective cover 6 and is connected to the armrests 3. The push assembly for pushing the patient's heel and knee joint is set on the flexion-extension assembly and is connected to the footrest 5 and the base frame 1.

[0028] The flexion-extension assembly for swinging the patient's lower leg includes a servo motor 71, a rotating shaft 72, gears 73, a fixed frame 74, a swing frame 75, a rack 76, a front support plate 77, and a rear support plate 78. A servo motor 71 is bolted to the outer wall of one of the protective covers 6. A rotating shaft 72 is connected to the output shaft of the servo motor 71 via a key. Two gears 73 are connected to the rotating shaft 72 via a key. The two gears 73 are symmetrically arranged and located within the two protective covers 6. Fixed frames 74 are bolted to the lower parts of both handrails 3. Swing frames 75 are rotatably connected to both fixed frames 74. A rack 76 is bolted to one end of each swing frame 75, and the rack 76 meshes with the gear 73. A front support plate 77 and a rear support plate 78 are rotatably connected to the lower parts of both swing frames 75.

[0029] The pushing assembly for pushing the patient's heel and knee joint includes an active pulley 81, a rotating rod 82, a passive pulley 83, a transmission belt 84, a protrusion 85, a support frame 86, and a pusher 87. The active pulley 81 is connected to the rotating shaft 72 via a flat key. The rotating rod 82 is rotatably connected to the foot support 5. The passive pulley 83 is connected to the rotating rod 82 via a flat key. The transmission belt 84 is wound between the active pulley 81 and the passive pulley 83. Two protrusions 85 are riveted to the rotating rod 82. The two protrusions 85 are symmetrically arranged and located below the two rear support plates 78. The support frame 86 is bolted to the top of the foot support 5. The pusher 87 is slidably connected to the support frame 86 and contacts the two rear support plates 78.

[0030] During rehabilitation exercises, the patient sits on seat 2 with both feet placed on the front support plate 77 and the rear support plate 78, hands on armrests 3, and back against the backrest plate 4. The caregiver then starts servo motor 71. Servo motor 71 drives shaft 72 to rotate via output shaft. The rotation of shaft 72 drives gear 73 and drive pulley 81 to rotate. Gear 73 moves rack 76 downwards, causing swing frame 75 to swing upwards. This upward swinging of swing frame 75 causes the front support plate 77 and the rear support plate 78 to swing upwards, which in turn causes the patient's lower legs to swing upwards. The drive pulley 81 rotates... The drive belt 84 drives the driven pulley 83 to rotate, which in turn drives the rotating rod 82 to rotate, which in turn drives the protrusion 85 to rotate. Subsequently, the nursing staff adjusts the servo motor 71, which drives the rotating shaft 72 to rotate in the opposite direction via the output shaft. The reverse rotation of the rotating shaft 72 drives the gear 73 and the drive pulley 81 to rotate in the opposite direction. The reverse rotation of the gear 73 drives the rack 76 to move upward and reset. The upward movement and reset of the rack 76 drives the swing frame 75 to swing downward and reset. The downward swing and reset of the swing frame 75 drives the front support plate 77 and the rear support plate 78 to swing downward and reset. The repositioning process causes the patient's lower leg to swing downwards and reposition. The reverse rotation of the active pulley 81 drives the passive pulley 83 to rotate in the opposite direction via the transmission belt 84. This reverse rotation of the passive pulley 83 drives the rotating rod 82 to rotate in the opposite direction, which in turn drives the protrusion 85 to rotate in the opposite direction. The protrusion 85 then contacts the rear support plate 78. When the convex surface of the protrusion 85 rotates in the opposite direction and contacts the rear support plate 78, the protrusion 85 will push against the rear support plate 78 and move upwards. This upward movement of the rear support plate 78 causes the patient's heel to move upwards. Simultaneously, the upward movement of the rear support plate 78 pushes the pusher 87 upwards, which in turn pushes the patient's knee joint downwards. As the convex surface of the protrusion 85 rotates in the opposite direction until it disengages from the rear support plate 78, the rear support plate 78 will move downwards and reset under the action of gravity. The patient's heel will also move downwards and reset under the action of inertia. At the same time, the rear support plate 78 will no longer push the pusher 87 as it moves downwards and resets. The pusher 87 will then move downwards under the action of gravity and no longer push the patient's knee joint. The patient's knee joint will then move downwards and reset under the action of inertia. This process is repeated to allow the patient's calf, heel, and knee joint to undergo sufficient rehabilitation exercises, thus enabling the patient to effectively perform rehabilitation exercises. After the rehabilitation exercises are completed, the nursing staff will turn off the servo motor 71.

[0031] Example 2: Based on Example 1, such as Figure 2 , Figure 3 and Figure 9As shown, it also includes a pressing assembly for pressing the patient's legs. The pressing assembly is mounted on a fixed frame 74 and connected to a swing frame 75. The pressing assembly includes a swing rod 91, a guide plate 92, a massage frame 93, and a torsion spring 94. The lower parts of the two fixed frames 74 are rotatably connected to the swing rod 91. The two swing frames 75 are bolted to the guide plate 92. The two guide plates 92 have guide grooves. The massage frame 93 is rotatably connected between the two swing rods 91. The massage frame 93 is provided with several massage balls. The massage frame 93 is slidably connected to the guide grooves on the two guide plates 92. The massage frame 93 and the two swing rods 91 are connected to the torsion spring 94 through hooks.

[0032] The upward swing of the swing frame 75 causes the guide plate 92 to move upward. The upward movement of the guide plate 92 causes the massage frame 93 to move upward along the guide groove on the guide plate 92. The upward movement of the massage frame 93 causes the swing arm 91 to swing upward, and the torsion spring 94 is twisted. The upward movement of the massage frame 93 presses on the patient's calf. The downward swing of the swing frame 75 to reset causes the guide plate 92 to move downward to reset. The downward movement of the guide plate 92 to reset causes the massage frame 93 to move downward along the guide groove on the guide plate 92 to reset. The downward movement of the massage frame 93 to reset causes the swing arm 91 to swing downward to reset, and the torsion spring 94 returns to its original position. This process repeats continuously, and the massage frame 93 continuously moves up and down, which can fully exercise the patient's calf, heel, and knee joint while fully pressing on the patient's calf, thereby improving the efficiency of the patient's rehabilitation exercise.

[0033] Example 3: Based on Example 2, such as Figure 6 and Figure 9 As shown, it also includes an ankle joint movement component for moving the patient's forefoot. The ankle joint movement component is mounted on the swing frame 75 and is connected to the massage frame 93 and the front support plate 77. The ankle joint movement component includes a limit frame 101, a fixing block 102, a fixing strip 103, a slider 104, a steel wire rope 105, and a return spring 106. The lower sides of the two swing frames 75 are bolted to the limit frame 101. The two ends of the massage frame 93 are riveted to the fixing blocks 102. The sides of the two front support plates 77 are bolted to the fixing strips 103. The slider 104 is slidably connected to the limit frame 101. One end of the steel wire rope 105 is bolted to the fixing block 102. The steel wire rope 105 passes through the slider 104. The other end of the steel wire rope 105 is bolted to the fixing strip 103. The return spring 106 is hooked between the slider 104 and the limit frame 101.

[0034] When the massage frame 93 moves upward, it causes the fixing block 102 to move upward. The upward movement of the fixing block 102 pulls the steel wire rope 105, causing it to straighten. This straightening of the steel wire rope 105 causes the slider 104 to move closer to the fixing bar 103, compressing the return spring 106. The straightening of the steel wire rope 105 also pulls the fixing bar 103 upward, causing it to move. This upward movement of the fixing bar 103 causes the front support plate 77 to swing upward, which in turn causes the patient's feet to swing upward. When the massage frame 93 moves downward to reset, it causes the fixing block 102 to move downward to reset. The repositioning mechanism stops pulling the steel wire rope 105, thus preventing the steel wire rope 105 from pulling the slider 104 and the fixing bar 103. The repositioning spring 106 will then reset and drive the slider 104 to reset. Under the influence of gravity, the fixing bar 103 will move downwards to reset. The downward movement of the fixing bar 103 will cause the front support plate 77 to swing downwards to reset. The downward swing of the front support plate 77 will cause the patient's foot to swing downwards to reset. This process repeats, allowing for comprehensive rehabilitation exercises for the patient's calf, heel, knee joint, and foot, thereby improving the patient's rehabilitation outcome.

[0035] Example 4: Based on Example 3, such as Figure 2 , Figure 7 and Figure 8 As shown, it also includes a cylinder 111, a piston frame 112, and a return spring 113. Two cylinders 111 are bolted to the support frame 5. The two cylinders 111 are symmetrically arranged. The piston frame 112 is slidably connected between the two cylinders 111. The piston frame 112 consists of a fixed frame and two piston rods fixedly connected to the fixed frame. The two piston rods on the fixed frame are symmetrically arranged. The piston frame 112 contacts two rear support plates 78. The return spring 113 is connected between the cylinders 111 and the piston frame 112 through a hook.

[0036] When the rear support plate 78 swings downward, the patient's foot will swing backward due to inertia, which will also cause the rear support plate 78 to swing backward. The rear support plate 78 will contact the piston frame 112 when it swings backward. The rear support plate 78 will push the piston frame 112 to move away from the front support plate 77. The return spring 113 will be compressed, which can buffer the backward swing of the rear support plate 78, thus protecting the patient when performing rehabilitation exercises. When the rear support plate 78 stops swinging backward, the return spring 113 will return to its original position and drive the rear support plate 78 to return to its original position.

[0037] Example 5: Based on Example 4, such as Figure 4As shown, it also includes rollers 12. Two rollers 12 are rotatably connected to the push frame 87. The two rollers 12 are made of sponge material and are arranged symmetrically.

[0038] The roller 12 can reduce the friction between the patient's knee joint and the pusher 87, thereby improving the patient's comfort during rehabilitation exercises.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A passive exercise rehabilitation machine for patients with myasthenia gravis, characterized in that, The device includes a base frame (1), a seat (2), armrests (3), a backrest (4), a footrest (5), a protective cover (6), a flexion-extension assembly, and a push assembly. The base frame (1) is fixedly connected to the top of the seat (2). Two armrests (3) are fixedly connected to the base frame (1). The two armrests (3) are arranged symmetrically. The backrest (4) is fixedly connected between the two armrests (3). The footrest (5) is fixedly connected to the lower part of the base frame (1). The protective cover (6) is fixedly connected to the lower side of both armrests (3). The flexion-extension assembly for swinging the patient's lower leg is set on the protective cover (6) and is connected to the armrests (3). The push assembly for pushing the patient's heel and knee joint is set on the flexion-extension assembly and is connected to the footrest (5) and the base frame (1).

2. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 1, characterized in that, The bending and stretching assembly includes a servo motor (71), a rotating shaft (72), gears (73), a fixed frame (74), a swing frame (75), a rack (76), a front support plate (77), and a rear support plate (78). A servo motor (71) is fixedly connected to the outer wall of one of the protective covers (6). A rotating shaft (72) is fixedly connected to the output shaft of the servo motor (71). Two gears (73) are fixedly connected to the rotating shaft (72). The two gears (73) are symmetrically arranged. 73) Located inside two protective covers (6), each of the two handrails (3) is fixedly connected to a fixed frame (74) at its lower part. Each of the two fixed frames (74) is rotatably connected to a swing frame (75). Each of the two swing frames (75) is fixedly connected to a rack (76) at one end. The rack (76) meshes with a gear (73). Each of the two swing frames (75) is rotatably connected to a front support plate (77) at its lower part. Each of the two swing frames (75) is rotatably connected to a rear support plate (78) at its lower part.

3. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 2, characterized in that, The pushing assembly includes an active pulley (81), a rotating rod (82), a passive pulley (83), a transmission belt (84), a protrusion (85), a support frame (86), and a pusher (87). The active pulley (81) is fixedly connected to the rotating shaft (72). The rotating rod (82) is rotatably connected to the foot bracket (5). The passive pulley (83) is fixedly connected to the rotating rod (82). The transmission belt (84) is wound between the active pulley (81) and the passive pulley (83). Two protrusions (85) are fixedly connected to the rotating rod (82). The two protrusions (85) are symmetrically arranged and located below the two rear support plates (78). The support frame (86) is fixedly connected to the top of the foot bracket (5). The pusher (87) is slidably connected to the support frame (86) and contacts the two rear support plates (78).

4. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 3, characterized in that, It also includes a pressing assembly for pressing the patient's legs. The pressing assembly is mounted on a fixed frame (74) and connected to a swing frame (75). The pressing assembly includes a swing rod (91), a guide plate (92), a massage frame (93), and a torsion spring (94). The lower parts of the two fixed frames (74) are rotatably connected to the swing rod (91). The two swing frames (75) are fixedly connected to the guide plate (92). The two guide plates (92) have guide grooves. The massage frame (93) is rotatably connected between the two swing rods (91). The massage frame (93) is provided with several massage balls. The massage frame (93) is slidably connected to the guide grooves on the two guide plates (92). The massage frame (93) is connected to the two swing rods (91) with a torsion spring (94).

5. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 4, characterized in that, It also includes an ankle joint movement component for moving the patient's forefoot. The ankle joint movement component is mounted on the swing frame (75) and connected to the massage frame (93) and the front support plate (77). The ankle joint movement component includes a limit frame (101), a fixing block (102), a fixing strip (103), a slider (104), a steel wire rope (105), and a return spring (106). The limit frames (101) are fixedly connected to the lower sides of both swing frames (75). Both ends of the massage frame (93) are... A fixing block (102) is fixedly connected, and fixing strips (103) are fixedly connected to the sides of the two front support plates (77). A slider (104) is slidably connected to the limiting frame (101). One end of a steel wire rope (105) is fixedly connected to the fixing block (102). The steel wire rope (105) passes through the slider (104). The other end of the steel wire rope (105) is fixedly connected to the fixing strip (103). A return spring (106) is connected between the slider (104) and the limiting frame (101).

6. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 5, characterized in that, It also includes a cylinder (111), a piston frame (112), and a return spring (113). Two cylinders (111) are fixedly connected to the support bracket (5). The two cylinders (111) are arranged symmetrically. The piston frame (112) is slidably connected between the two cylinders (111). The piston frame (112) contacts the two rear support plates (78). The return spring (113) is connected between the cylinder (111) and the piston frame (112).

7. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 6, characterized in that, It also includes rollers (12), and two rollers (12) are rotatably connected to the push frame (87). The two rollers (12) are made of sponge material and are arranged symmetrically.

8. The passive exercise rehabilitation machine for patients with myasthenia gravis according to claim 6, characterized in that, The piston frame (112) consists of a fixed frame and two piston rods fixedly connected to the fixed frame, with the two piston rods on the fixed frame arranged symmetrically.

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