Rehabilitation device for myasthenia patient

Abstract

The utility model relates to the field of rehabilitation training instruments, in particular to a rehabilitation device for myasthenia patients, a rehabilitation part comprises a shell, a groove is formed in the shell, a driving motor is arranged in the shell, the output end of the driving motor is connected with a lifting threaded rod, and the top of the lifting threaded rod is movably connected with the top of the inner wall of the groove; a lifting block is arranged on the surface of the lifting threaded rod and located in the groove, a baffle is arranged on the front face of the lifting block, the front face of the baffle extends out of the groove, a clamping groove is formed in the front face of the baffle, a clamping column is arranged on the inner wall of the clamping groove, a rotating plate is movably connected to the surface of the clamping column, and fixing rollers are arranged on the two sides of the rotating plate. A driving motor can be started to enable a lifting threaded rod to rotate, then a lifting block drives a baffle and a connecting structure of the baffle to conduct height change till the position where a fixed roller is located is matched with the height of a patient sitting on the seat, and when the fixed roller can be arranged to be suitable for upper and lower limb exercise actions, a rotating plate can be pushed to rotate.

Description

Technical Field

[0001] This application relates to the field of rehabilitation training equipment technology, and in particular to a rehabilitation device for patients with myasthenia gravis. Background Technology

[0002] Myasthenia gravis refers to a significant decrease in the strength of one or more muscles, resulting in the inability to move the muscles normally. It is primarily caused by lesions in the central and peripheral nervous systems, muscle diseases, and neuromuscular junction disorders. After the central nervous system sends nerve impulses, they are transmitted to the muscles by peripheral nerves, stimulating muscle contraction and producing muscle movement. When any of these processes is abnormal—for example, lesions in the central or peripheral nervous systems can affect the generation and transmission of nerve impulses; lesions at the junction of motor nerves and muscles can prevent nerve impulses from being transmitted normally to the muscles; and muscle diseases or abnormal muscle metabolism can affect normal muscle contraction, all of which can lead to myasthenia gravis. Patients with myasthenia gravis undergo rehabilitation exercises alongside medication. These rehabilitation training devices help patients regain their independent living abilities. The treatment primarily focuses on training daily living skills, joint mobility, fine motor skills, muscle strength, endurance, and cognitive functions. Examples include finger muscle strength training tables, upper and lower limb power bikes, wrist joint rotation trainers, occupational therapy devices, and cognitive graphic boards. These devices assist patients in training their upper and lower limb abilities and fine motor skills to achieve self-care.

[0003] A patent application titled "A Rehabilitation Training Device for Upper and Lower Limb Muscle Strength" (CN220294054U) is published on the Chinese Patent Network. The device includes a housing (1) with two upper support rods (2) fixedly connected to its exterior. Each upper support rod (2) has a first damper (14) installed inside it. A first damping plate (4) is installed at the piston rod end of the first damper (14). A first rotating shaft (3) is rotatably connected to the exterior of each upper support rod (2). A push rod (5) is fixedly connected to the exterior of the first rotating shaft (3). A handle (6) is fixedly connected to the exterior of the push rod (5). A lower support rod (6) is fixedly connected to the exterior of the housing (1). 10) Two second dampers (18) are installed inside the lower support rod (10). A second damping plate (11) is installed at the piston rod end of the second damper (18). A second rotating shaft (8) is rotatably connected to the outside of the box (1). A foot plate (9) is fixedly connected to the outside of the second rotating shaft (8). Cables (16) are fixedly connected to the outside of both the first rotating shaft (3) and the second rotating shaft (8). A counterweight (19) is fixedly connected to the end of the cable (16). A tension spring (17) is fixedly connected to the outside of the counterweight (19). One end of the tension spring (17) is fixedly connected to the inside of the box (1). By setting up upper limb and lower limb muscle strength rehabilitation training mechanisms, each equipped with counterweights and tension springs, users can push them any distance for training, gradually increasing the pushing force to perform upper and lower limb muscle strength rehabilitation training. A first and second buffer mechanism are also included to unload the force from the push rod and pedal, assisting users in resetting the upper and lower limb muscle strength rehabilitation training mechanisms. This prevents safety issues caused by insufficient muscle support in the upper and lower limbs, which could lead to the mechanisms falling back too quickly, thus protecting the personal safety of the users.

[0004] During use, it was found that both upper and lower limb exercises involve forward pushing movements. However, the height of the upper and lower limb training mechanism is fixed, and there are individual differences among patients. The fixed height of the upper and lower limb training mechanism inevitably causes inconvenience for some patients, affecting the training effect and recovery effect. Utility Model Content

[0005] This application provides a rehabilitation device for patients with myasthenia gravis, in order to solve the technical problem that the inventors recognize that both the upper and lower limbs have forward propulsion movements during exercise, but the upper and lower limb training mechanisms are highly fixed. However, there are individual differences among patients, and the highly fixed upper and lower limb training mechanisms inevitably lead to inconvenience for some patients, affecting the training effect and recovery effect.

[0006] This application provides a rehabilitation device for patients with myasthenia gravis, comprising:

[0007] A seat, comprising a base plate, a support column, and a backrest, wherein the support column is connected to the bottom of the base plate, and the backrest is disposed on the top of the base plate;

[0008] The rehabilitation component comprises two parts, located on either side of the seat. Each component includes a housing with a groove inside. A drive motor is installed inside the housing, and the output end of the drive motor is connected to a lifting threaded rod. The top of the lifting threaded rod is movably connected to the top of the inner wall of the groove. A lifting block is installed on the surface of the lifting threaded rod and inside the groove. A baffle is installed on the front of the lifting block, extending to the outside of the groove. A slot is provided on the front of the baffle, and a locking post is installed on the inner wall of the slot. A rotating plate is movably connected to the surface of the locking post. Fixed rollers are installed on both sides of the rotating plate. An anti-slip pad is installed on the surface of the fixed roller on the side of the rotating plate closer to the seat, and a counterweight plate is installed on the surface of the fixed roller on the side of the rotating plate away from the seat.

[0009] In any of the above technical solutions, a base is further included, wherein there are two bases, and two housings are respectively disposed on the top of the bases. The interior of the two bases is provided with a sliding groove and a limiting groove, the sliding groove and the limiting groove are connected, a slider is slidably connected to the inner wall of the sliding groove, a support plate is disposed on the surface of the slider, the other side of the support plate extends to the outside of the housing, the bottom of the support column is disposed on the top of the support plate, and a rotating threaded rod is movably connected to the front of the inner wall of one of the sliding grooves, the slider is threadedly connected to the surface of the rotating threaded rod, and the front of the rotating threaded rod extends to the outside of the housing.

[0010] In any of the above technical solutions, a top plate is provided at the top of the chair back, a first through hole is provided inside the top plate, a storage cavity and a second through hole are provided inside the chair back, the first through hole, the second through hole and the storage cavity are connected in sequence, a dual-head motor is provided inside the chair back, and there are two first through holes, two second through holes and two storage cavities, which are symmetrically arranged around the center line of the chair back. The output end of the dual-head motor is connected to a rotating shaft, and the other end of the rotating shaft is movably connected to the inner wall of the storage cavity. A connecting line is provided on the surface of the rotating shaft, and the other end of the connecting line passes through the storage cavity, the second through hole and the first through hole in sequence to the outside of the top plate and is connected to a neck restraint strap.

[0011] In any of the above technical solutions, the support column further includes a fixed column and a movable column. The fixed column has a cavity and a first insertion hole inside, and the cavity and the insertion hole are connected. The movable column has a second insertion hole inside, and the movable column is inserted into the fixed column. It also includes a pin, which can pass through the first insertion hole and the second insertion hole in sequence. There are multiple second insertion holes.

[0012] In any of the above technical solutions, a battery is further provided inside the chair back, which is used to power the dual-head motor and the drive motor.

[0013] In any of the above technical solutions, further, the front side of the rotating threaded rod extends to the outside of the housing and is connected to an abutment plate, and a fixing pad is provided on the surface of the housing and on the surface of the rotating threaded rod, the front side of the fixing pad being able to abut against the back side of the abutment plate.

[0014] In any of the above technical solutions, a soft pad is further provided on the front of the chair back and the top of the base plate.

[0015] In any of the above technical solutions, the neck restraint strap has perforations inside, and the neck restraint strap is made of elastic material.

[0016] In any of the above technical solutions, the surface of the abutment plate is further provided with anti-slip texture.

[0017] In any of the above technical solutions, a constant force spring is further provided at the bottom of the inner wall of the cavity, and the top of the constant force spring is connected to the bottom of the movable column.

[0018] The main benefits of this application are:

[0019] 1. The lifting threaded rod can be rotated by starting the drive motor, which in turn causes the lifting block to drive the baffle and its connecting structure to change in height until the position of the fixed roller matches the height of the patient sitting in the chair. When the fixed roller is positioned to perform upper and lower limb exercises, the rotating plate can be pushed to rotate, thereby realizing rehabilitation training movements.

[0020] 2. The rotating threaded rod can be driven by the abutment plate to rotate, which in turn causes the slider to move the support plate to change the position of the seat and thus adapt to the individual differences of the patient. At the same time, the seat height can be changed to adapt to the height of the patient by changing the position of the first and second holes through which the pin is inserted.

[0021] 3. After the patient's head passes through the puncture, the top of the neck restraint is brought into contact with the chin. Then, the dual-head motor is activated, and the connecting wire is wound around the rotating shaft. The neck restraint is moved through the connecting wire, thereby stretching the patient's neck and training the patient's neck muscles.

[0022] It should be understood that the foregoing general description and the following detailed description are for illustrative purposes only and do not necessarily limit the scope of this application. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this application. Furthermore, the specification and drawings serve to explain the principles of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram (front view) of the rehabilitation device structure according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram (top sectional view) of the base and support plate and their internal structure according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram (side sectional view) of the chair back and top panel and their internal structure in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram (front sectional view) of the chair back and its internal structure in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram (front sectional view) of the shell and its internal structure in an embodiment of this application.

[0029] Figure 6 This is a schematic diagram (front sectional view) of the structure of the fixed column, movable column, and constant force spring in the embodiments of this application;

[0030] Figure 7 This is a schematic diagram (front view) of the fixed column structure in an embodiment of this application.

[0031] icon:

[0032] 100-Seat; 101-Base plate; 102-Backrest; 103-Top plate; 104-Storage cavity; 105-Dual-head motor; 106-Spindle; 107-Connecting cable; 108-Neck restraint strap; 109-Fixed post; 110-Moving post; 111-Cavity; 112-First insertion hole; 113-Second insertion hole; 114-Pin; 115-Constant force spring; 116-Battery; 117-Cushion; 118-Perforation; 200-Rehabilitation component; 201-Housing; 202-Groove; 203-Drive motor; 204-Lifting threaded rod; 205-Lifting block; 206-Baffle; 207-Slot; 208-Slot column; 209-Turn plate; 210-Fixed roller; 211-Anti-slip pad; 212-Counterweight plate; 213-Base; 214-Slide groove; 215-Limit groove; 216-Slider; 217-Support plate; 218-Rotating threaded rod; 219-Abutting plate; 220-Fixed pad. Detailed Implementation

[0033] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0034] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Please see Figure 1 and Figure 5One or more embodiments provide a rehabilitation device for patients with myasthenia gravis, comprising: a seat 100, the seat 100 including a base plate 101, a support column and a backrest 102, the support column being connected to the bottom of the base plate 101, and the backrest 102 being disposed on the top of the base plate 101; and two rehabilitation components 200, the two rehabilitation components 200 being located on both sides of the seat 100, each rehabilitation component 200 including a housing 201, the housing 201 having a groove 202 inside, a drive motor 203 being disposed inside the housing 201, the output end of the drive motor 203 being connected to a lifting threaded rod 204, the top of the lifting threaded rod 204 being movably connected to the top of the inner wall of the groove 202, and the lifting... A lifting block 205 is provided on the surface of the threaded rod 204 and inside the groove 202. A baffle 206 is provided on the front of the lifting block 205, and the front of the baffle 206 extends to the outside of the groove 202. A slot 207 is provided on the front of the baffle 206. A locking post 208 is provided on the inner wall of the slot 207. A rotating plate 209 is movably connected to the surface of the locking post 208. Fixed rollers 210 are provided on both sides of the rotating plate 209. An anti-slip pad 211 is provided on the surface of the fixed roller 210 on the side of the rotating plate 209 closer to the seat 100. A counterweight plate 212 is provided on the surface of the fixed roller 210 on the side of the rotating plate 209 away from the seat 100. A soft pad 117 is provided on the front of the backrest 102 and the top of the bottom plate 101.

[0038] In this embodiment, the lifting threaded rod 204 can be rotated by starting the drive motor 203, which in turn causes the lifting block 205 to drive the baffle 206 and its connecting structure to change height until the position of the fixed roller 210 matches the height of the patient sitting in the seat 100. When the fixed roller 210 is positioned to perform upper and lower limb exercises, the rotating plate 209 can be pushed to rotate, thereby realizing rehabilitation training movements. During upper limb exercises, the anti-slip mat 211 can be held to drive the rotating plate 209 away from the seat 100 and deflect it, thus realizing the forward push of the upper limb. During lower limb exercises, the ankle can contact the anti-slip mat 211, which will drive the rotating plate 209 away from the seat 100 and deflect it, thus realizing the forward push of the lower limb. There are multiple counterweight plates 212, and the number of counterweight plates 212 can be selected and installed on the corresponding fixed rollers 210 to adapt to the different conditions of patients for exercise.

[0039] Please see Figure 1 and Figure 2In some embodiments, a base 213 is also included, and there are two bases 213. Two housings 201 are respectively disposed on the top of the base 213. The interior of the two bases 213 is provided with a sliding groove 214 and a limiting groove 215, which are connected. A slider 216 is slidably connected to the inner wall of the sliding groove 214. A support plate 217 is disposed on the surface of the slider 216. The other side of the support plate 217 extends to the outside of the housing 201. The bottom of the support column is disposed on the top of the support plate 217. A rotating threaded rod 218 is movably connected to the inner wall of the slide groove 214. A slider 216 is threadedly connected to the surface of the rotating threaded rod 218. The front of the rotating threaded rod 218 extends to the outside of the housing 201. An abutment plate 219 is connected to the front of the rotating threaded rod 218 extending to the outside of the housing 201. A fixing pad 220 is provided on the surface of the housing 201 and on the surface of the rotating threaded rod 218. The front of the fixing pad 220 can abut against the back of the abutment plate 219. The surface of the abutment plate 219 is provided with anti-slip texture.

[0040] In this embodiment, the rotating threaded rod 218 can be rotated by the abutment plate 219. Due to the positional limitation of the rotating threaded rod 218, it can only rotate and cannot be displaced. This causes the slider 216 to drive the support plate 217 to move, and then the support plate 217 drives the seat 100 to move, thereby changing the distance between the seat 100 and the rehabilitation piece 200 to adapt to the individual differences of different patients. After the abutment plate 219 is rotated to the appropriate position, the position of the abutment plate 219 can be fixed by the compression of the fixing pad 220. The anti-slip texture avoids the probability of slippage during the rotation of the abutment plate 219.

[0041] Please see Figure 1 , Figure 3 and Figure 4In some embodiments, a top plate 103 is provided at the top of the chair back 102, and a first through hole 118 is formed inside the top plate 103. A storage cavity 104 and a second through hole 118 are formed inside the chair back 102. The first through hole 118, the second through hole 118 and the storage cavity 104 are connected in sequence. A dual-head motor 105 is provided inside the chair back 102. There are two first through holes 118, two second through holes 118 and two storage cavities 104. 104 is symmetrically arranged along the center line of the backrest 102. The output end of the dual-head motor 105 is connected to the rotating shaft 106. The other end of the rotating shaft 106 is movably connected to the inner wall of the storage cavity 104. The surface of the rotating shaft 106 is provided with a connecting line 107. The other end of the connecting line 107 passes through the storage cavity 104, the second perforation 118 and the first perforation 118 in sequence to the outside of the top plate 103 and is connected to a neck restraint strap 108. The neck restraint strap 108 has a perforation 118 inside and is made of elastic material.

[0042] In this embodiment, after the patient's head passes through the perforation 118, the top of the neck restraint 108 contacts the jaw. Then, the dual-head motor 105 is activated, causing the connecting wire 107 to wrap around the surface of the rotating shaft 106. The connecting wire 107 drives the neck restraint 108 to move, thereby stretching the patient's neck. When the dual-head motor 105 rotates in the opposite direction, the rotating shaft 106 rotates in the opposite direction. As the patient recovers, the neck restraint 108 returns to its starting position. During this process, the patient's neck muscle strength can be trained.

[0043] Please see Figure 1 , Figure 6 and Figure 7 In some embodiments, the support column includes a fixed column 109 and a movable column 110. The fixed column 109 has a cavity 111 and a first insertion hole 112 inside, and the cavity 111 and the insertion hole are connected. The movable column 110 has a second insertion hole 113 inside, and the movable column 110 is inserted into the fixed column 109. It also includes a pin 114, which can pass through the first insertion hole 112 and the second insertion hole 113 in sequence. There are multiple second insertion holes 113. A constant force spring 115 is provided at the bottom of the inner wall of the cavity 111, and the top of the constant force spring 115 is connected to the bottom of the movable column 110.

[0044] In this embodiment, when adjusting the height of the seat 100 according to the patient's height, the pin 114 can be pulled out, and then the base plate 101 can be pulled or pressed down. When the height is appropriate, the first socket 112 and the second socket 113 can be overlapped. At this time, the pin 114 can be inserted into the first socket 112 and the second socket 113, thereby fixing the position of the seat 100.

[0045] Please see Figure 1 , Figure 4 and Figure 5 In some embodiments, a battery 116 is provided inside the backrest 102, which is used to power the dual-head motor 105 and the drive motor 203.

[0046] In this embodiment, the battery 116 can supply power to the dual-head motor 105 and the drive motor 203. The battery 116 can be charged via a charging cable or a charging port. The charging method adopts existing technology. The output terminals of the dual-head motor 105 and the drive motor 203 can be equipped with encoders. The encoders can monitor the rotation angle, speed, and direction of the output terminals of the dual-head motor 105 and the drive motor 203. The battery 116 can supply power to the encoders.

[0047] It should be noted that the specific models and specifications of the dual-head motor 105, drive motor 203, battery 116 and encoder in this disclosure need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be described in detail here. Its power supply and its principle are clear to those skilled in the art, so they will not be described in detail here. The connection and installation of its various parts and the signal transmission principle are well known in the field.

[0048] Specifically, the working principle of the rehabilitation device for patients with myasthenia gravis provided in this application is as follows:

[0049] The rotating threaded rod 218 can be rotated by the abutment plate 219. Due to the positional limitation of the rotating threaded rod 218, the rotating threaded rod 218 can only rotate and cannot achieve displacement, so that the slider 216 drives the support plate 217 to move, and then drives the seat 100 to move through the support plate 217, so as to change the distance between the seat 100 and the rehabilitation component 200.

[0050] When the height of the seat 100 can be adjusted according to the patient's height, the pin 114 can be pulled out, and then the base plate 101 can be pulled or pressed down. When the height is appropriate, the first socket 112 and the second socket 113 can be overlapped. At this time, the pin 114 can be inserted into the first socket 112 and the second socket 113 to fix the position of the seat 100.

[0051] The lifting threaded rod 204 can be rotated by starting the drive motor 203, which in turn causes the lifting block 205 to drive the baffle 206 and its connecting structure to change in height until the position of the fixed roller 210 matches the height of the patient sitting in the seat 100.

[0052] During upper limb exercises, the anti-slip mat 211 can be held to drive the rotating plate 209 away from the seat 100 and deflect it, thus achieving a forward pushing motion of the upper limb. During lower limb exercises, the ankle can contact the anti-slip mat 211, which will drive the rotating plate 209 away from the seat 100 and deflect it, thus achieving a forward pushing motion of the lower limb. There are multiple counterweight plates 212, and the number of counterweight plates 212 can be selected and installed on the corresponding fixed rollers 210 to suit the different conditions of different patients for exercise.

[0053] After the patient's head passes through the perforation 118, the top of the neck restraint 108 is brought into contact with the jaw. Then, the dual-head motor 105 is activated, causing the connecting line 107 to wrap around the surface of the rotating shaft 106. The connecting line 107 drives the neck restraint 108 to move, thereby stretching the patient's neck. When the dual-head motor 105 rotates in the opposite direction, the rotating shaft 106 rotates in the opposite direction. As the patient recovers, the neck restraint 108 returns to its starting position. This process can train the patient's neck muscle strength.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rehabilitation device for patients with myasthenia gravis, characterized in that, include: A seat, comprising a base plate, a support column, and a backrest, wherein the support column is connected to the bottom of the base plate, and the backrest is disposed on the top of the base plate; The rehabilitation component comprises two parts, located on either side of the seat. Each component includes a housing with a groove inside. A drive motor is installed inside the housing, and the output end of the drive motor is connected to a lifting threaded rod. The top of the lifting threaded rod is movably connected to the top of the inner wall of the groove. A lifting block is installed on the surface of the lifting threaded rod and inside the groove. A baffle is installed on the front of the lifting block, extending to the outside of the groove. A slot is provided on the front of the baffle, and a locking post is installed on the inner wall of the slot. A rotating plate is movably connected to the surface of the locking post. Fixed rollers are installed on both sides of the rotating plate. An anti-slip pad is installed on the surface of the fixed roller on the side of the rotating plate closer to the seat, and a counterweight plate is installed on the surface of the fixed roller on the side of the rotating plate away from the seat.

2. The rehabilitation device for patients with myasthenia gravis according to claim 1, characterized in that, It also includes a base, of which there are two. The two housings are respectively disposed on the top of the base. The interior of the two bases is provided with a sliding groove and a limiting groove. The sliding groove and the limiting groove are connected. A slider is slidably connected to the inner wall of the sliding groove. A support plate is disposed on the surface of the slider. The other side of the support plate extends to the outside of the housing. The bottom of the support column is disposed on the top of the support plate. A rotating threaded rod is movably connected to the front of the inner wall of one of the sliding grooves. The slider is threadedly connected to the surface of the rotating threaded rod. The front of the rotating threaded rod extends to the outside of the housing.

3. The rehabilitation device for patients with myasthenia gravis according to claim 1, characterized in that, The chair back has a top plate at the top, and a first through hole is formed inside the top plate. The chair back has a storage cavity and a second through hole inside, and the first through hole, the second through hole and the storage cavity are connected in sequence. A dual-head motor is installed inside the chair back. There are two first through holes, two second through holes and two storage cavities. The two first through holes, two second through holes and two storage cavities are symmetrically arranged around the center line of the chair back. The output end of the dual-head motor is connected to a rotating shaft. The other end of the rotating shaft is movably connected to the inner wall of the storage cavity. A connecting line is provided on the surface of the rotating shaft. The other end of the connecting line passes through the storage cavity, the second through hole and the first through hole in sequence to the outside of the top plate and is connected to a neck restraint strap.

4. The rehabilitation device for patients with myasthenia gravis according to claim 1, characterized in that, The support column includes a fixed column and a movable column. The fixed column has a cavity and a first insertion hole inside, and the cavity and the insertion hole are connected. The movable column has a second insertion hole inside, and the movable column is inserted into the fixed column. It also includes a pin, which can pass through the first insertion hole and the second insertion hole in sequence. There are multiple second insertion holes.

5. A rehabilitation device for patients with myasthenia gravis according to claim 3, characterized in that, A battery is installed inside the chair back, which powers the dual-head motor and the drive motor.

6. A rehabilitation device for patients with myasthenia gravis according to claim 2, characterized in that, The front side of the rotating threaded rod extends to the outside of the housing and is connected to an abutment plate. A fixing pad is provided on the surface of the housing and on the surface of the rotating threaded rod. The front side of the fixing pad can abut against the back side of the abutment plate.

7. A rehabilitation device for patients with myasthenia gravis according to claim 1, characterized in that, The front of the chair back and the top of the base plate are provided with cushions.

8. A rehabilitation device for patients with myasthenia gravis according to claim 3, characterized in that, The neck restraint has perforations inside and is made of elastic material.

9. A rehabilitation device for patients with myasthenia gravis according to claim 6, characterized in that, The surface of the abutment plate is provided with anti-slip texture.

10. A rehabilitation device for patients with myasthenia gravis according to claim 4, characterized in that, A constant force spring is provided at the bottom of the inner wall of the cavity, and the top of the constant force spring is connected to the bottom of the movable column.

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