A rehabilitation chair for use after orthopedic ACL reconstruction surgery

Abstract

This invention relates to a rehabilitation chair, and more particularly to a rehabilitation chair for use after orthopedic ACL reconstruction surgery. It primarily provides a rehabilitation chair that relies on hand and machine assistance to stretch the leg, ensuring rehabilitation effectiveness, while also allowing adjustment of the leg fixation components to improve its applicability after orthopedic ACL reconstruction surgery. A rehabilitation chair for use after orthopedic ACL reconstruction surgery includes: a support frame, first connecting blocks, a seat plate, hand assistance mechanisms, and an automatic leg flexion and extension mechanism. The support frame has first connecting blocks on all four sides of its top, with the seat plate connected between the first connecting blocks. Hand assistance mechanisms are located on both sides of the seat plate, and the automatic leg flexion and extension mechanism is connected to the bottom of the seat plate. By incorporating the hand assistance mechanisms and the automatic leg flexion and extension mechanism, and through hand assistance and the rotation of the lower leg support plate, the leg is brought into a straight position. Subsequently, continuous stretching of the Achilles tendon and fascia provides rehabilitation training for the lower leg, achieving basic function.

Description

Technical Field

[0001] This invention relates to a rehabilitation chair, and more particularly to a rehabilitation chair for use after orthopedic ACL reconstruction surgery. Background Technology

[0002] After a bone injury, prolonged inactivity can easily lead to joint stiffness. In medical care, rehabilitation training is particularly important for patients. With the development of medicine, more and more rehabilitation devices or related equipment are available, providing excellent conditions for patient rehabilitation. Among them, stretching exercise rehabilitation devices are a common orthopedic rehabilitation device. Through stretching exercise rehabilitation devices, patients can perform corresponding rehabilitation training to exercise their joints and help them recover.

[0003] Current stretching and rehabilitation devices are generally fixed structures, which cannot effectively adapt to different needs of leg stretching rehabilitation. They also lack assistive capabilities, resulting in poor rehabilitation training effects. Therefore, it is necessary to design a rehabilitation chair that relies on hands and machines to assist leg stretching, ensuring rehabilitation effects, while allowing adjustment of the fixed leg components to improve applicability for use after orthopedic ACL reconstruction surgery. Summary of the Invention

[0004] To overcome the shortcomings of existing rehabilitation devices, which are generally fixed structures, unable to effectively adapt to different needs of leg stretching rehabilitation, thus reducing applicability, and lacking assistive capabilities, resulting in poor rehabilitation training effects, the technical problem of this invention is to provide a rehabilitation chair for post-ACL reconstruction surgery that relies on hand and machine assistance to stretch the leg, ensuring rehabilitation effects, while allowing adjustment of the fixed leg components to improve applicability.

[0005] The technical implementation of the present invention is as follows: a rehabilitation chair for use after orthopedic ACL reconstruction surgery, comprising a support frame, a first connecting block, a seat plate, a hand support mechanism and an automatic leg flexion and extension mechanism. The support frame is provided with first connecting blocks on all four sides of the top, and the seat plate is connected between the first connecting blocks. The seat plate is provided with hand support mechanisms on both sides, and the automatic leg flexion and extension mechanism is connected to the bottom of the seat plate.

[0006] In a preferred embodiment of the present invention, the hand-assisted mechanism includes a second connecting block, a connecting frame, an arm placement plate, and a hand grip. The second connecting blocks are provided on both sides of the seat plate, the connecting frame is provided on the top of the second connecting block, the arm placement plate is provided on the top of the connecting frame, and a hand grip is provided on one side of the arm placement plate.

[0007] In a preferred embodiment of the present invention, the automatic leg flexion and extension mechanism includes a support base, a servo motor, a lead screw, a push rod, a first bearing bracket, a second bearing bracket, a calf placement plate, and a foot placement plate. Two support bases are slidably provided on one side of the bottom of the base plate, and a servo motor is rotatably provided between the lower parts of the support bases. A lead screw is provided on the output shaft of the servo motor. Two second bearing brackets are slidably provided on the other side of the bottom of the base plate, and a calf placement plate is rotatably connected between the second bearing brackets. A foot placement plate is provided at the bottom of the calf placement plate, and a first bearing bracket is provided in the middle of the calf placement plate. A push rod is rotatably provided on the first bearing bracket, and the push rod is threadedly connected to the lead screw.

[0008] In a preferred embodiment of the present invention, a leg fixing mechanism is further included. The leg fixing mechanism includes a mounting groove plate, an arc-shaped fixing plate, a first limiting block, and an elastic locking block. The mounting groove plate is provided on one side of the top of the seat plate and the lower part of the calf placement plate. The top mounting groove plate is slidably connected to the seat plate. An arc-shaped fixing plate is slidably provided on one side of the mounting groove plate. A first limiting block is provided on both sides of the arc-shaped fixing plate. An elastic locking block is symmetrically slidably provided on the other side of the mounting groove plate. The elastic locking block cooperates with the first limiting block.

[0009] In a preferred embodiment of the present invention, a relaxation mechanism is further included. The relaxation mechanism includes a mounting bracket, a mounting shaft, a spiral spring, a connecting rod, and a backing plate. The mounting bracket is connected to one side of the seat plate. The mounting bracket is rotatably connected to the mounting shaft. Spiral springs are connected to the mounting bracket on both sides of the mounting shaft. Connecting rods are symmetrically arranged on the mounting shaft. The backing plate is connected between the tops of the connecting rods.

[0010] In a preferred embodiment of the present invention, a flexion-extension stopping mechanism is further included. The flexion-extension stopping mechanism includes a connecting bracket, a guide rod, a first return spring, a contact post, a guide groove plate, a second return spring, a mounting block, and a pull rope. The outer side of the support base is connected to the connecting bracket. The lower part of the connecting bracket is slidably provided with a guide rod. A guide groove plate is connected between the guide rods. A contact post is slidably provided on one side of the guide groove plate. A second return spring is connected between the contact post and the guide groove plate. A first return spring is connected between the guide rod and the connecting bracket. Two mounting blocks are provided on the upper part of the calf placement plate. A pull rope is connected between each mounting block and the guide groove plate.

[0011] In a preferred embodiment of the present invention, a limiting mechanism is further included. The limiting mechanism includes a mounting frame, a lower pressure plate, a first limiting spring, a third connecting block, a first contact rod, a first wedge block, a first guide frame, a second limiting spring, a second limiting block, a second contact rod, a second wedge block, a second guide frame, a third limiting spring, and a third limiting block. The mounting frame is provided at the bottom of the seat plate, and the lower pressure plate is slidably provided at the top of the mounting frame. A first limiting spring is connected between the lower pressure plate and the top of the seat plate. A third connecting block is provided at the bottom of the lower pressure plate. First contact rods are provided on both sides of the third connecting block, and second contact rods are provided on both sides of the third connecting block. Two first guide frames are provided on one side of the seat plate. A first wedge block is slidably provided at the lower part of each first guide frame. A second limiting block is provided on one side of each first wedge block. A second limiting spring is connected between the first wedge block and the first guide frame. Two second guide frames are provided on one side of the bottom of the seat plate. A second wedge block is slidably provided at the lower part of each second guide frame. A third limiting block is provided on one side of each second wedge block. A third limiting spring is connected between the second wedge block and the second guide frame.

[0012] In a preferred embodiment of the present invention, a rubber ring is fitted onto the handle.

[0013] The beneficial effects of this invention are as follows: By setting up a hand-assisted mechanism and an automatic leg flexion and extension mechanism, the leg is brought into a straight position through hand assistance and the rotation of the calf support plate. Subsequently, the calf undergoes rehabilitation training by continuously stretching the Achilles tendon and fascia, achieving basic function. By setting up a leg fixation mechanism and a relaxation mechanism, the thigh and calf are fixed to prevent the user from moving arbitrarily and affecting the rehabilitation effect, while providing a relaxing and comfortable resting condition to ensure the later rehabilitation effect. By setting up a flexion and extension stop mechanism and a limit mechanism, the position of the calf support plate is adjusted and fixed according to the user's left and right legs, while the servo motor automatically goes into standby mode, requiring no manual operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the hand-assisted mechanism of the present invention.

[0016] Figure 3 This is a three-dimensional structural diagram of the automatic leg flexion and extension mechanism of the present invention.

[0017] Figure 4 This is a three-dimensional structural diagram of the leg fixing mechanism of the present invention.

[0018] Figure 5 This is a three-dimensional structural diagram of the bending and stretching stopping mechanism of the present invention.

[0019] Figure 6This is a cross-sectional structural diagram of the bending and stretching stopping mechanism of the present invention.

[0020] Figure 7 This is a cross-sectional structural diagram of the limiting mechanism of the present invention.

[0021] Figure 8 This is a three-dimensional structural diagram of the relaxation mechanism of the present invention.

[0022] Figure 9 This is an enlarged structural diagram of part A of the present invention.

[0023] The components in the attached diagram are labeled as follows: 1. Support frame, 2. First connecting block, 3. Seat plate, 4. Hand lever mechanism, 41. Second connecting block, 42. Connecting frame, 43. Arm placement plate, 44. Hand grip, 5. Automatic leg flexion and extension mechanism, 51. Support base, 52. Servo motor, 53. Lead screw, 54. Push rod, 55. First bearing bracket, 56. Second bearing bracket, 57. Lower leg placement plate, 58. Foot placement plate, 6. Leg fixing mechanism, 61. Mounting slot plate, 62. Arc-shaped fixing plate, 63. First limit block, 64. Elastic locking block, 7. Flexion and extension stop mechanism, 71. Connecting bracket, 72. Guide rod, 73. First... 74. Position spring, 75. Contact post, 76. Guide groove plate, 77. Second reset spring, 78. Mounting block, 89. Pull rope, 80. Limiting mechanism, 81. Mounting bracket, 82. Lower pressure plate, 83. First limiting spring, 84. Third connecting block, 85. First contact rod, 86. First wedge block, 87. First guide frame, 88. Second limiting spring, 89. Second limiting block, 810. Second contact rod, 811. Second wedge block, 812. Second guide frame, 813. Third limiting spring, 814. Third limiting block, 91. Releasing mechanism, 92. Mounting bracket, 93. Mounting shaft, 94. Spiral spring, 95. Connecting rod, 96. Backing plate. Detailed Implementation

[0024] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0025] Example 1

[0026] A rehabilitation chair for use after orthopedic ACL reconstruction surgery, such as Figure 1 , Figure 2 , Figure 3 and Figure 9As shown, it includes a support frame 1, a first connecting block 2, a seat plate 3, a hand-assisted mechanism 4, and a leg-automatic bending and stretching mechanism 5. The support frame 1 has first connecting blocks 2 symmetrically arranged on the front and rear sides of the top, and the seat plate 3 is connected between the first connecting blocks 2. The seat plate 3 has hand-assisted mechanisms 4 on the front and rear sides, and the bottom of the seat plate 3 is connected to the leg-automatic bending and stretching mechanism 5.

[0027] The hand-assisted mechanism 4 includes a second connecting block 41, a connecting frame 42, an arm placement plate 43, and a hand grip bar 44. The seat plate 3 is provided with a second connecting block 41 on both the front and rear sides. The second connecting block 41 is provided with a connecting frame 42 on the top. The connecting frame 42 is provided with an arm placement plate 43 on the top. The arm placement plate 43 is provided with a hand grip bar 44 on the right side.

[0028] The automatic leg flexion and extension mechanism 5 includes a support base 51, a servo motor 52, a lead screw 53, a push rod 54, a first bearing bracket 55, a second bearing bracket 56, a calf placement plate 57, and a foot placement plate 58. Two support bases 51 are slidably provided on the bottom left side of the base plate 3. A servo motor 52 is rotatably provided between the lower parts of the support bases 51. A lead screw 53 is provided on the output shaft of the servo motor 52. Two second bearing brackets 56 are slidably provided on the bottom right side of the base plate 3. A calf placement plate 57 is rotatably connected between the second bearing brackets 56. A foot placement plate 58 is provided at the bottom of the calf placement plate 57. A first bearing bracket 55 is provided on the middle left side of the calf placement plate 57. A push rod 54 is rotatably provided on the first bearing bracket 55. The push rod 54 is threadedly connected to the lead screw 53.

[0029] The user can sit on the seat 3, place both arms on the armrest 43, and hold the hand grips 44. Then, place the leg requiring rehabilitation on the calf rest 57, with the foot on the footrest 58. Start the servo motor 52. The output shaft of the servo motor 52 rotates, driving the lead screw 53 to rotate. The lead screw 53 rotates, guiding the push rod 54 to move to the right. The push rod 54 moves to the right, driving the calf rest 57 to rotate to the right through the first bearing bracket 55. When the calf rest 57 rotates to a straight position, the servo motor 52 stops operating, causing the subsequent components to stop operating. This keeps the calf in a straight position, performing rehabilitation training by stretching the Achilles tendon and fascia. After maintaining the straight position for several minutes, depending on the user's condition, start the servo motor 52 to rotate in the opposite direction, driving the lead screw 53 to rotate in the opposite direction. The lead screw 53 rotates in the opposite direction, driving the push rod 54 to move to the left to reset. The calf rest 57 rotates to reset, resetting the calf. Stop the servo motor 52, rest for a moment, and then perform a second stretch.

[0030] Example 2

[0031] Based on Example 1, such as Figure 1 , Figure 4 and Figure 8As shown, it also includes a leg fixing mechanism 6, which includes a mounting groove plate 61, an arc-shaped fixing plate 62, a first limiting block 63, and an elastic locking block 64. The top right side of the seat plate 3 and the lower right side of the calf placement plate 57 are both provided with mounting groove plates 61. The top mounting groove plate 61 is slidably connected to the seat plate 3. The front side of the mounting groove plate 61 is slidably provided with an arc-shaped fixing plate 62. The arc-shaped fixing plate 62 is provided on both sides of the arc-shaped fixing plate 62. The rear side of the mounting groove plate 61 is symmetrically slidably provided with elastic locking blocks 64. The elastic locking blocks 64 cooperate with the first limiting blocks 63.

[0032] It also includes a relaxation mechanism 9, which includes a mounting bracket 91, a mounting shaft 92, a spiral spring 93, a connecting rod 94, and a backing plate 95. The mounting bracket 91 is connected to the left side of the seat plate 3, and the mounting shaft 92 is rotatably connected to the right side of the mounting bracket 91. The spiral spring 93 is connected to the mounting bracket 91 on both the front and rear sides of the mounting shaft 92. The connecting rod 94 is symmetrically arranged on the front and rear of the mounting shaft 92, and the backing plate 95 is connected to the top right side of the connecting rod 94.

[0033] After sitting properly, the user can pull the curved fixing plate 62 around the thigh and calf and move it backward. The backward movement of the curved fixing plate 62 causes the first limiting block 63 to move backward and contact the elastic locking block 64. The elastic locking block 64 moves outward. When the first limiting block 63 moves to a point where it no longer contacts the elastic locking block 64, the elastic locking block 64 automatically resets and moves inward to lock the first limiting block 63. This fixes the leg. With rehabilitation training, after the training is completed, pushing the elastic locking block 64 outward will release it from its position. Limit block 63 drives the arc-shaped fixing plate 62 to move forward and reset. Stop pushing the elastic locking block 64 to allow it to automatically reset. During the rest period, the user can lean against the backrest 95 to rest. The backrest 95 rotates backward under force to provide a more comfortable relaxation condition. At this time, the backrest 95 rotates backward, which drives the mounting shaft 92 to rotate through the connecting rod 94. The spiral spring 93 deforms. After resting, the user sits upright and no longer applies force to the backrest 95. The spiral spring 93 resets and drives the backrest 95 to rotate and reset through the mounting shaft 92.

[0034] Example 3

[0035] Based on Example 2, such as Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, it also includes a flexion-extension stopping mechanism 7, which includes a connecting bracket 71, a guide rod 72, a first return spring 73, a contact post 74, a guide groove plate 75, a second return spring 76, a mounting block 77, and a pull rope 78. The outer side of the support base 51 is connected to the connecting bracket 71. The lower part of the connecting bracket 71 is slidably provided with a guide rod 72. The left side of the guide rod 72 is connected to the guide groove plate 75. The right side of the guide groove plate 75 is slidably provided with a contact post 74. The left side of the contact post 74 is connected to the guide groove plate 75 with a second return spring 76. The guide rod 72 is connected to the left side of the connecting bracket 71 with a first return spring 73. The upper left side of the calf placement plate 57 is provided with two mounting blocks 77. The left side of each mounting block 77 is connected to the guide groove plate 75 with a pull rope 78.

[0036] It also includes a limiting mechanism 8, which includes a mounting frame 81, a lower pressure plate 82, a first limiting spring 83, a third connecting block 84, a first contact rod 85, a first wedge block 86, a first guide frame 87, a second limiting spring 88, a second limiting block 89, a second contact rod 810, a second wedge block 811, a second guide frame 812, a third limiting spring 813, and a third limiting block 814. The mounting frame 81 is provided at the bottom of the base plate 3, and the lower pressure plate 82 is slidably provided at the top of the mounting frame 81. The first limiting spring 83 is connected between the lower pressure plate 82 and the top of the base plate 3. The third connecting block 84 is provided at the bottom of the lower pressure plate 82, and the third connecting block 84 is provided on both the front and rear sides of the left side. A contact rod 85 is provided, and a second contact rod 810 is provided on both the front and rear sides of the right side of the third connecting block 84. Two first guide frames 87 are provided on the bottom left side of the seat plate 3. A first wedge block 86 is slidably provided on the lower part of each first guide frame 87. A second limiting block 89 is provided on the left side of the first wedge block 86. A second limiting spring 88 is connected between the first wedge block 86 and the left side of the first guide frame 87. Two second guide frames 812 are provided on the bottom right side of the seat plate 3. A second wedge block 811 is slidably provided on the lower part of each second guide frame 812. A third limiting block 814 is provided on the right side of the second wedge block 811. A third limiting spring 813 is connected between the second wedge block 811 and the left side of the second guide frame 812.

[0037] When adjustment of the left and right legs is required, pushing the second bearing bracket 56 and support base 51 causes the upper components to move backward, and the upper mounting slot plate 61 also moves backward. After adjustment to the appropriate position, the user sits on the seat plate 3 and presses the lower pressure plate 82 downward, compressing the first limiting spring 83. The downward movement of the lower pressure plate 82 drives the first contact rod 85 and the second contact rod 810 downward through the third connecting block 84. The downward movement of the first contact rod 85 presses the first wedge block 86 to move to the left, stretching the second limiting spring 88. The rear first wedge block 86 moves to the left, causing the second limiting block 89 to move to the left and lock the front support base. 51. This fixes the servo motor 52. Simultaneously, the second contact rod 810 moves downward, pressing the second wedge block 811 to move to the right. The third limiting spring 813 is compressed, and the rear second wedge block 811 moves to the right, causing the third limiting block 814 to move to the right and lock the rear side of the calf placement plate 57. This fixes the calf placement plate 57. Similarly, when the second bearing bracket 56 and the support base 51 are in the front, the front first wedge block 86 moves to the left, causing the second limiting block 89 to move to the left and lock the rear support base 51. The front second wedge block 811 moves to the right, causing the third limiting block 814 to move to the right and lock the calf placement plate 57. The front side of the leg placement plate 57 prevents the servo motor 52 and the lower leg placement plate 57 from moving. In conjunction with rehabilitation, the lower leg placement plate 57 rotates to the right, causing the mounting block 77 to tighten the pull rope 78. The tightening of the pull rope 78 causes the guide groove plate 75 to move to the right, compressing the first reset spring 73. The guide groove plate 75 then moves to the right, causing the contact post 74 to move to the right and contact the standby button of the servo motor 52. The servo motor 52 then enters standby mode and stops operating, thereby stopping the operation of its subsequent components. The second reset spring 76 acts as a buffer. After stretching, the servo motor 52 is activated in reverse, causing the lower leg placement plate 57 to rotate to the left to reset. Spring 73 resets, causing guide plate 75 and contact post 74 to move to the left and reset. Pull rope 78 resets. After reset, servo motor 52 stops operating. After use, the user gets up and no longer applies force to the lower pressure plate 82. First limit spring 83 resets, causing lower pressure plate 82 to move upward. Third connecting block 84 moves upward, causing first contact rod 85 and second contact rod 810 to move upward. First wedge block 86 and second wedge block 811 are no longer under force. Second limit spring 88 and third limit spring 813 reset, causing second limit block 89 and third limit block 814 to move to the left and no longer jam the lower leg placement plate 57 and support base 51.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A rehabilitation chair for use after orthopedic ACL reconstruction surgery, characterized in that it includes: a support frame (1), a first connecting block (2), a seat plate (3), a hand-assisted mechanism (4), and an automatic leg flexion and extension mechanism (5), wherein the support frame (1) is provided with first connecting blocks (2) on all four sides of the top, the seat plate (3) is connected between the first connecting blocks (2), the seat plate (3) is provided with hand-assisted mechanisms (4) on both sides of the seat plate (3), and the automatic leg flexion and extension mechanism (5) is connected to the bottom of the seat plate (3); The hand-assisted mechanism (4) includes: a second connecting block (41), a connecting frame (42), an arm placement plate (43), and a hand grip (44). The second connecting block (41) is provided on both sides of the seat plate (3). The connecting frame (42) is provided on the top of the second connecting block (41). The arm placement plate (43) is provided on the top of the connecting frame (42). The hand grip (44) is provided on one side of the arm placement plate (43). The automatic leg flexion and extension mechanism (5) includes: a support base (51), a servo motor (52), a lead screw (53), a push rod (54), a first bearing bracket (55), a second bearing bracket (56), a calf placement plate (57), and a foot placement plate (58). Two support bases (51) are slidably provided on one side of the bottom of the seat plate (3). A servo motor (52) is rotatably provided between the lower parts of the support bases (51). A lead screw (53) is provided on the output shaft of the servo motor (52). Two second bearing brackets (56) are slidably provided on the other side of the bottom of the seat plate (3). A calf placement plate (57) is rotatably connected between the second bearing brackets (56). A foot placement plate (58) is provided at the bottom of the calf placement plate (57). A first bearing bracket (55) is provided in the middle of the calf placement plate (57). A push rod (54) is rotatably provided on the first bearing bracket (55). The push rod (54) is threadedly connected to the lead screw (53). It also includes a leg fixing mechanism (6), which includes: a mounting groove plate (61), an arc-shaped fixing plate (62), a first limiting block (63), and an elastic locking block (64). The top side of the seat plate (3) and the lower part of the calf placement plate (57) are provided with mounting groove plates (61). The top mounting groove plate (61) is slidably connected to the seat plate (3). An arc-shaped fixing plate (62) is slidably provided on one side of the mounting groove plate (61). A first limiting block (63) is provided on both sides of the arc-shaped fixing plate (62). An elastic locking block (64) is symmetrically slidably provided on the other side of the mounting groove plate (61). The elastic locking block (64) cooperates with the first limiting block (63). It also includes a flexion-extension stop mechanism (7), which includes: a connecting bracket (71), a guide rod (72), a first return spring (73), a contact post (74), a guide groove plate (75), a second return spring (76), a mounting block (77), and a pull rope (78). The support base (51) is connected to the outside of the connecting bracket (71). The lower part of the connecting bracket (71) is provided with a guide rod (72). The guide rod (72) is connected to the guide groove plate (75). The guide groove plate (75) is provided to one side of the guide groove plate (75). The second return spring (76) is connected between the contact post (74) and the guide groove plate (75). The first return spring (73) is connected between the guide rod (72) and the connecting bracket (71). The lower leg placement plate (57) is provided with two mounting blocks (77). The mounting blocks (77) are connected to the guide groove plate (75) with a pull rope (78). It also includes a limiting mechanism (8), which includes: a mounting bracket (81), a lower pressure plate (82), a first limiting spring (83), a third connecting block (84), a first contact rod (85), a first wedge block (86), a first guide frame (87), a second limiting spring (88), a second limiting block (89), a second contact rod (810), a second wedge block (811), a second guide frame (812), a third limiting spring (813), and a third limiting block (814). The bottom of the seat plate (3) is provided with a mounting bracket (81), and the top of the mounting bracket (81) is provided with a sliding lower pressure plate (82). The lower pressure plate (82) is connected to the top of the seat plate (3) with a first limiting spring (83). The bottom of the lower pressure plate (82) is provided with a third connecting block (84). 84) Both sides are provided with first contact rods (85), both sides of the third connecting block (84) are provided with second contact rods (810), one side of the seat plate (3) is provided with two first guide frames (87), the lower part of the first guide frame (87) is provided with a first wedge block (86), one side of the first wedge block (86) is provided with a second limiting block (89), the first wedge block (86) and the first guide frame (87) are connected by a second limiting spring (88), one side of the bottom of the seat plate (3) is provided with two second guide frames (812), the lower part of the second guide frame (812) is provided with a second wedge block (811), one side of the second wedge block (811) is provided with a third limiting block (814), the second wedge block (811) and the second guide frame (812) are connected by a third limiting spring (813).

2. A rehabilitation chair for postoperative ACL reconstruction surgery according to claim 1, characterized in that, It also includes a relaxation mechanism (9), which includes: a mounting bracket (91), a mounting shaft (92), a spiral spring (93), a connecting rod (94), and a backing plate (95). The mounting bracket (91) is connected to one side of the seat plate (3), and the mounting shaft (92) is rotatably connected between the mounting brackets (91). The spiral springs (93) are connected to the mounting brackets (91) on both sides of the mounting shaft (92). The connecting rods (94) are symmetrically arranged on the mounting shaft (92), and the backing plate (95) is connected between the tops of the connecting rods (94).

3. A rehabilitation chair for postoperative ACL reconstruction surgery according to claim 2, characterized in that, A rubber ring is fitted on the grip bar (44).

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