CN108158782B - Lower limb passive exercise rehabilitation chair for surgery - Google Patents

Abstract

A passive motion rehabilitation chair for lower extremities for surgery can solve the problems that the treatment of lower extremity movement disorders affects the rehabilitation effect and is time-consuming and labor-intensive due to the level of assisting personnel; The accommodating cavity, the oscillating motor and the pedal board are arranged in the accommodating cavity, the output shaft of the oscillating motor is sequentially provided with a connecting rod, a shifting fork and a first bevel gear, the connecting rod is connected with the half-gear, and the pedal board is provided with a foot groove and a foot groove The bottom surface is provided with a first hole, the first hole is provided with a massage column, the pedal board is provided with a cavity, and the cavity is provided with a jacking device, the jacking device is connected to the rack, the rack and the half-gear are meshed, and a wire is arranged behind the pedal seat The lead screw is connected with a second bevel gear and a square nut, the second bevel gear is meshed with the first bevel gear, a guide block is arranged under the seat, and the guide block is in contact with the square nut; the present invention can complete the lower limbs of the human body without the assistance of personnel Multi-faceted rehabilitation training for movement disorders has a good effect on lower limb movement disorders.

Description

A passive motion rehabilitation chair for lower limbs for surgery

technical field

The invention relates to the field of medical instruments, in particular to a surgical lower limb passive motion rehabilitation chair.

Background technique

Surgical lower extremity passive motion rehabilitation chair is a kind of physical therapy rehabilitation equipment, mainly for rehabilitation training of lower extremity motor dysfunction, including lower extremity movement disorder caused by accident, lower extremity movement disorder caused by stroke sequelae, etc. At present, most of the rehabilitation training for passive movement of the lower limbs adopts manual assistance, which is time-consuming and labor-intensive, and the effect of rehabilitation training is uneven due to the level of the assistants, so the effect of rehabilitation training is difficult to guarantee; The incidence of stroke has been increasing, and the number of people with lower extremity motor dysfunction caused by it is also increasing. Therefore, there is an urgent need for a medical device with good effect for rehabilitation training of lower extremity motor dysfunction.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a lower limb passive motion rehabilitation chair for surgery, which can solve the rehabilitation training of lower limb motor dysfunction, and the rehabilitation effect is affected by the different levels of assisting personnel, and the rehabilitation training Time-consuming and laborious problems.

The technical scheme of the invention is: a passive motion rehabilitation chair for lower limbs for surgery, comprising a seat, the seat is provided with a seat plate, the front end of the seat plate is rotatably connected with a pedal seat, and the pedal seat includes a horizontal plate and a vertical plate; The top surface of the plate extends downward with an accommodating cavity, and the lower part of the accommodating cavity is provided with a swing motor. The output shaft of the swing motor is sequentially provided with a connecting rod, a shifting fork and a first bevel gear along the outward direction of the output shaft. The free end of the connecting rod A half-gear is connected; the upper part of the accommodating cavity is rotatably connected with a pedal board; the top surface of the pedal board is provided with two foot rest grooves, the bottom surface of the foot rest groove is provided with a plurality of first holes, and the first holes are provided with massage columns; The inside of the pedal board is provided with a cavity, and the cavity is provided with a jacking device that can jack up and down the massage column; the jacking device is fixedly connected to the rack, and the rack and the half-gear are engaged; the rear of the vertical plate is provided with a rotatable The upper and lower ends of the screw are connected with the pedal seat through rolling bearings; the lower part of the screw is fixedly connected with a second bevel gear, which meshes with the first bevel gear; the screw is rotatably connected with a square nut; the front end of the seat plate A guide block is arranged below, and the guide block is in contact with the square nut.

The present invention can carry out multi-directional rehabilitation training for human lower limb movement disorder, including knee joint movement, ankle joint movement and foot massage, etc., and has good curative effect on the rehabilitation of lower limb movement disorder. In addition, there is no need for manual assistance during use, and passive exercise training is completely completed by the rehabilitation chair, which eliminates the influence of different levels of assisting personnel on the rehabilitation effect, and is of great help to the user's rehabilitation training.

Description of drawings

Figure 1 is a perspective view of the present invention.

Fig. 2 is a perspective partial cross-sectional view of the present invention.

Fig. 3 is a front sectional view of the present invention.

FIG. 4 is an enlarged view of the area A in FIG. 3 .

Fig. 5 is a right sectional view of the third working position of the present invention.

Fig. 6 is a right side sectional view of the present invention in working position one.

Fig. 7 is a right side sectional view of the second working position of the present invention.

Fig. 8 is a perspective view of the half gear of the present invention.

Fig. 9 is a perspective view of the footrest of the present invention.

Fig. 10 is a perspective view of the seat of the present invention.

Detailed ways

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings 1-10.

For the convenience of description, "front", "rear", "left", "right", "upper" and "lower" in this specification are all set according to the arrangement of FIG. 3 .

As can be seen from Figures 1-8, a surgical lower limb passive motion rehabilitation chair includes a seat 1, the seat 1 is provided with a seat plate 2, the front end of the seat plate 2 is rotatably connected with a pedal seat 3, and the pedal seat 3 includes a horizontal plate. 4 and the vertical plate 5; the top surface of the horizontal plate 4 extends downward with an accommodating cavity 6, the inner and lower part of the accommodating cavity 6 is provided with a swing motor 7, and the output shaft of the swing motor 7 is sequentially provided with connecting rods 8 along the outward direction of the output shaft , the shift fork 9 and the first bevel gear 10, the free end of the connecting rod 8 is connected with a half gear 11; the upper part of the accommodating cavity 6 is rotatably connected with a pedal board 12; the top surface of the pedal board 12 is provided with two foot grooves 13 The bottom surface of the foot groove 13 is provided with a plurality of first holes 14, and the first holes 14 are provided with a massage column 15; the pedal board 12 is provided with a cavity 16, and the cavity 16 is provided with a massage column 15 that can be lifted up. The jacking device is fixedly connected to the rack 17, and the rack 17 meshes with the half-gear 11; a rotatable lead screw 18 is arranged behind the vertical plate 5, and the upper and lower ends of the lead screw 18 are connected to the pedal seat through rolling bearings. 3 connection; the lower part of the lead screw 18 is fixedly connected with a second bevel gear 19, which meshes with the first bevel gear 10; the lead screw 18 is rotatably connected with a square nut 20; the front end of the seat plate 2 is provided with a guide block 21 , the guide block 21 is in contact with the square nut 20 .

In order to ensure the implementation effect, the seat 1 is provided with a safety strap 39 , and a foot protection strap 22 is provided around the foot slot 13 .

In order to ensure the implementation effect, the pedal board 12 is rotatably connected in the accommodating cavity 6 through the first rotating shaft 23, and the first rotating shaft 23 is arranged in the left-right direction.

In order to ensure the implementation effect, the first holes 14 are designed in a matrix form.

In order to ensure the implementation effect, the jacking device includes a jacking plate 24, which moves in the left-right direction relative to the pedal board 12; the top surface of the jacking plate 24 is in sliding contact with the top surface of the cavity 16; the bottom surface of the jacking plate 24 is close to the vertical One side of the straight plate 5 is fixedly connected to the rack 17 ; the top surface of the jacking plate 24 extends along its moving direction with multiple rows of wavy sink grooves 25 corresponding to the positions of the first holes 14 .

In order to ensure the implementation effect, the bottom surface of the jacking plate 24 is provided with two first grooves 26 along its moving direction, and the bottom surface of the cavity 16 is provided with two second grooves 27 corresponding to the first grooves 26. The first grooves 26 And a plurality of balls 28 are arranged in the second groove 27 .

In order to ensure the implementation effect, the half gear 11 is provided with a second rotating shaft 29, the second rotating shaft 29 is connected to the pedal board 12 through a rolling bearing, and the half gear 11 extends outward with a first rod 30, and the first rod 30 passes through the joint bearing. It is hingedly connected with the free end of the connecting rod 8 .

In order to ensure the implementation effect, the outer diameter of the massage column 15 is connected with a circular nut 31 through a thread. The lower section of the first hole 14 is provided with a stop groove 32 that is concentric with the first hole 14 and has a radius larger than that of the circular nut 31. The stop groove 32 passes through Through the top surface of the cavity 16 , the circular nut 31 is located in the stop groove 32 .

In order to ensure the implementation effect, the upper end of the massage column 15 is provided with a spherical chamfer; the lower end of the massage column 15 is provided with a blind hole 33, and a compression spring 34 and a guide column 35 are sequentially arranged in the blind hole 33 along its axial downward direction; the upper end of the guide column 35 Bolts 36 are threadedly connected, and the top surface of the bolts 36 abuts against the bottom surface of the compression spring 34 ;

In order to ensure the implementation effect, one end of the square nut 20 is provided with a chamfer with an involute profile, the guide block 21 is provided with an inclined surface, and a blind groove 38 is provided downward on the inclined surface. catch.

When the present invention is used,

There are three working positions, the first working position, that is, when the fork 9 is moved to the position of the connecting rod 8, the swing motor 7 drives the connecting rod 8 to swing through the fork 9, and the first bevel gear 10 cannot swing; the second working position, that is, the shifting fork 9 When it is set to the position of the first bevel gear 10, the swing motor drives the first bevel gear 10 to swing through the shift fork 9, and the connecting rod 8 cannot swing; the working position is three, that is, the shift fork 9 is in the middle of the connecting rod 8 and the first bevel gear 10. position, neither the connecting rod 8 nor the first bevel gear 10 can swing.

Considering that the user is a person with lower limb movement disorders, when the user is exercising, after sitting on the seat plate 2, first fasten the safety strap 39 to ensure the safety of the user during the rehabilitation training process, and adjust the position of the buttocks so that the popliteal fossa is located at the Above the rotation center of the pedal seat 3; then put both feet in the foot groove 13, and fasten the foot protection straps 22 of the feet to avoid the user's feet leaving the foot groove 13 during passive exercise. Rehabilitation training is interrupted, which affects the rehabilitation training process and the effect of rehabilitation training.

Then adjust the working position according to the needs of rehabilitation training. When adjusted to working position 1, the swing motor 7 drives the connecting rod 8 to swing through the first fork 9. Since the connecting rod 8 is connected with the half gear 11 through the joint bearing, the second rotating shaft 29 passes through The rolling bearing is connected to the pedal board 12, and the pedal board 12 is rotatably connected to the pedal seat 3 through the first rotating shaft 23, so at this time, the swing motor 7 will drive the pedal board 12 to reciprocate around the first rotating shaft 23, and then The user's foot reciprocates around the ankle joint to perform passive exercise rehabilitation training on the user's ankle joint; at the same time, due to the meshing of the half gear 11 and the rack 17, the rack 17 and the jacking plate 24 are fixedly connected, so swinging The motor 7 will synchronously drive the lifting plate 24 to reciprocate left and right in the cavity 16. At this time, since the sink grooves 25 are extended in a wave shape, the sink grooves 25 will drive the corresponding entire row of massage columns 15 to reciprocate up and down in a wave shape. The massage column 15 reciprocates up and down in a wave shape, which plays the role of massaging the sole of the foot, which can well stimulate the acupoints on the sole of the foot and increase the blood circulation of the foot; More active cooperation in the process of rehabilitation training, the effect of rehabilitation training is more obvious.

While the jacking plate 24 reciprocates left and right, the sinking groove 25 rubs the guide wheel 37, so that the guide wheel 37 rotates around its rotating shaft, which reduces the movement resistance, makes the movement smoother and smoother, and the recovery effect is more ideal; When the trough of 25 moves to the position of the guide wheel 37, the massage column 15 is immersed in the first hole 14 to the maximum extent, and when the wave crest of the sink 25 moves to the position of the guide wheel 37, the massage column 15 extends out of the first hole 14 and compresses the maximum length. The spring 34 is compressed to the maximum extent; at the same time, the ball 28 will roll back and forth in the first groove 26 and the second groove 27, which has the effect of maintaining the movement direction of the jacking plate 24 and reducing the movement resistance.

And according to the different needs of different users, the maximum length of the massage column 15 extending out of the first hole can be adjusted by adjusting the position of the circular nut 31 on the massage column 15, and the length of the guide column 35 can be adjusted by adjusting the bolt 36. The maximum compression length of the compression spring 34 can be adjusted to achieve different massage strength requirements; by adjusting the swing speed of the swing motor 7, the swing speed of the pedal board 12 and the frequency of the up and down reciprocating motion of the massage column 15 are adjusted to achieve different Ankle movement speed and foot massage frequency.

When the user's knee joint needs to be moved, it only needs to be adjusted to the second working position. At this time, the swing motor 7 drives the first bevel gear 10 to swing through the shift fork 9; The two bevel gears 19 are fixedly connected to the lead screw 18, the lead screw 18 is connected to the square nut 20 by threads, the square nut 20 abuts the blind groove 38, the upper and lower ends of the lead screw 18 are fixed on the pedal seat 3 through rolling bearings, and the pedal seat 3 It is rotatably connected to the seat 1, and the blind slot 18 is arranged on the guide block 21. Therefore, the swinging of the swing motor 7 will drive the lead screw 18 to swing, thereby causing the square nut 20 to reciprocate up and down along the blind slot 38. Since the blind slot 38 is set on an inclined plane , so the pedal seat 3 will reciprocate around the seat 1 and passively move the user's knee joint; the swing speed of the pedal seat 3 is controlled by the swing speed of the swing motor 7, and the swing speed of the swing motor 7 can be adjusted according to different users. The swing speed is adjusted accordingly, so that the effect of rehabilitation training is more obvious and the scope of use is wider; at the same time, the lead screw 18 is set as a multi-head lead screw, and the transmission ratio of the first bevel gear 10 and the second bevel gear 19 is less than 1 , which can effectively enlarge the swing angle of the swing motor, thereby ensuring that the swing angle of the pedal seat 3 can reach a maximum of 80°, and achieve a good effect of moving the knee joint; in addition, the square nut 20 and the blind slot 38 are set to be gradually abutted. The chamfering of the opening line contour can ensure that the pedal seat 3 swings smoothly and at a constant speed during the swinging process, which is safer and more effective for the user's rehabilitation training.

When all the rehabilitation training is over, adjust the fork 9 to the working position three and turn off the power.

The power source of the present invention is the swing motor 7, so that the speed and angle of the passive movement can be adjusted according to the needs of different users, and the massage intensity can be adjusted according to the needs of different users by adjusting the circular nut 31 and the bolt 36. Corresponding adjustment, the use range is larger and the use effect is more obvious, and it has a good rehabilitation training effect on different degrees of lower limb movement disorders caused by different incentives; in addition, the present invention does not require manual assistance, and completely relies on the rehabilitation chair to complete the passive movement of the lower limbs, avoiding the need for manual assistance. It solves the problem of unsatisfactory rehabilitation effect caused by the uneven level of assisting staff.

Claims (8)

1. A passive motion rehabilitation chair for surgical lower limbs, characterized in that it comprises a seat (1), the seat (1) is provided with a seat plate (2), and the front end of the seat plate (2) is rotatably connected with a pedal seat (3). ), the pedal seat (3) includes a horizontal plate (4) and a vertical plate (5); the top surface of the horizontal plate (4) extends downward with an accommodating cavity (6), and the inner and lower part of the accommodating cavity (6) is provided with a swing motor (7), the output shaft of the swing motor (7) is provided with a connecting rod (8), a shifting fork (9) and a first bevel gear (10) in sequence along the outward direction of the output shaft, and the free end of the connecting rod (8) A half-gear (11) is hingedly connected; a pedal board (12) is rotatably connected to the upper part of the accommodating cavity (6); ) bottom surface is provided with a plurality of first holes (14), the first holes (14) are provided with massage columns (15); the inside of the pedal board (12) is provided with a cavity (16), and the cavity (16) is provided with There is a jacking device that can jack up and put down the massage column (15); the jacking device is fixedly connected to the rack (17), and the rack (17) and the half gear (11) are meshed; the rear of the vertical plate (5) is provided with A rotatable lead screw (18), the upper and lower ends of the lead screw (18) are connected with the pedal seat (3) through rolling bearings; the lower part of the lead screw (18) is fixedly connected with a second bevel gear (19), the second bevel gear (19) ) meshes with the first bevel gear (10); a square nut (20) is rotatably connected to the lead screw (18); a guide block (21) is provided under the front end of the seat plate (2), and the guide block (21) is connected to the square nut ( 20) are in contact with each other; the half gear (11) is provided with a second rotating shaft (29), the second rotating shaft (29) is connected to the pedal board (12) through a rolling bearing, and the half gear (11) extends outward with a first A rod (30), the first rod (30) is hingedly connected with the free end of the connecting rod (8) through a joint bearing; One end of the square nut (20) is provided with a chamfer with an involute profile, the guide block (21) is provided with an inclined surface, and the inclined surface is provided with a blind groove (38) downward. Slot (38) abuts. 2 . The surgical lower limb passive motion rehabilitation chair according to claim 1 , wherein the seat ( 1 ) is provided with a safety strap ( 39 ), and a foot protection strap is provided around the foot groove ( 13 ). 3 . (twenty two). 3. A surgical lower extremity passive motion rehabilitation chair according to claim 1, characterized in that the footrest (12) is rotatably connected to the accommodating cavity (6) through the first rotating shaft (23), and the first rotating The axis (23) is set in the left and right directions. 4 . The passive motion rehabilitation chair for lower limbs for surgery according to claim 1 , wherein the first holes ( 14 ) are designed in a matrix shape. 5 . 5 . The passive motion rehabilitation chair for lower limbs for surgery according to claim 1 , wherein the jacking device comprises a jacking plate (24), and the jacking plate (24) moves in the left and right directions relative to the pedal board (12). 6 . ; The top surface of the jacking plate (24) is in sliding contact with the top surface of the cavity (16); the bottom surface of the jacking plate (24) is close to the side of the vertical plate (5) and the rack (17) is fixedly connected; the jacking plate (24) ) The top surface is extended along its movement direction with multiple rows of wavy sink grooves (25) corresponding to the positions of the first holes (14). 6 . The passive motion rehabilitation chair for lower limbs for surgery according to claim 1 , wherein the bottom surface of the jacking plate ( 24 ) is provided with two first grooves ( 26 ) along its moving direction, and the cavity ( 16 ) ) on the bottom surface corresponding to the first grooves (26) are provided with two second grooves (27), and a plurality of balls (28) are provided in the first grooves (26) and the second grooves (27). 7 . The passive motion rehabilitation chair for lower limbs for surgery according to claim 1 , wherein the outer diameter of the massage column ( 15 ) is threadedly connected with a circular nut ( 31 ), and the lower section of the first hole ( 14 ) is provided with a circular nut ( 31 ). 8 . A stop groove (32) that is concentric with the first hole (14) and has a radius greater than that of the circular nut (31), the stop groove (32) penetrates the top surface of the cavity (16), and the circular nut (31) is located at the stop position slot (32). 8 . The passive motion rehabilitation chair for lower limbs for surgery according to claim 5 , wherein the upper end of the massage column ( 15 ) is provided with a spherical chamfer; the lower end of the massage column ( 15 ) is provided with a blind hole ( 33 ). A compression spring (34) and a guide post (35) are arranged in the hole (33) in turn along its axial direction downward; the upper end of the guide post (35) is threadedly connected with a bolt (36), the top surface of the bolt (36) and the compression spring (34) The bottom surfaces are in contact with each other; the lower end of the guide post (35) is rotatably connected with a guide wheel (37), and the guide wheel (37) abuts against the sinker (25).

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