CN115363838A - Knee varus rehabilitation orthosis - Google Patents

Abstract

The invention discloses a knee varus and valgus rehabilitation orthosis, which comprises a rack, a motor, a link mechanism, a knee joint orthopedic part and an ankle joint orthopedic part; the motor is arranged at the rear end of the frame through the supporting bottom plate; the connecting rod mechanism comprises a transmission rod, a thigh adjusting rod, a shank adjusting rod, a pedal guide rod, a guide connecting plate and a lead screw supporting plate; the transmission rod is connected with the output shaft of the motor and is driven by the motor; the knee joint orthopedic part is arranged at the hinged position of the thigh adjusting rod and the shank adjusting rod; the ankle joint orthopedic part is arranged on the pedal guide rod. The invention has simple structure, high matching degree and convenient use, can better meet the use requirements of different patients, controls the setting of a system, can accurately control the related angle range, the related speed and the related movement time required by the varus and valgus rehabilitation orthopedic treatment required by medical treatment, and improves the correction accuracy; the knee joint orthopedic part and the ankle joint orthopedic part have double functions, so that the correction effect is improved.

Description

Knee varus rehabilitation orthosis

technical field

The invention relates to the technical field of rehabilitation equipment, in particular to a knee valgus rehabilitation orthosis.

Background technique

The knee joint is the largest and most complex joint in the human body. It is one of the most stressed joints. Osteoarthropathy of the knee joint is a common disease, often occurring in middle-aged and elderly people. Secondary knee osteoarthropathy can lead to genu varus and genu valgus deformities, forming commonly known as "X"-shaped and "O"-shaped legs. This is a disease in which the stress on the articular surface of the bone is concentrated and the pressure distribution is abnormal. This disease causes the joint to lose its original directional stability. It not only aggravates the varus or valgus of the knee joint, but also further concentrates the pressure on some points on the articular surface of the knee joint, causing the patient to feel pain when standing or walking , have a great impact on the lives of patients. There are also some knee varus and valgus diseases that occur in childhood and adolescence, which not only affects the physical and mental health of patients, but also brings inconvenience to their lives.

At present, the common method of correcting varus and valgus of the knee joint is to use simple splints, plaster and braces for clamping correction; this treatment method takes a long time to correct and has a single angle. If there is improper clamping, it is likely to lead to more serious Deformity, even compression ulcers; at this time, if it is not corrected in time, or the method is used improperly, it will lead to irreversible deformity of the limbs, which can only be corrected by fracture or osteotomy, which will benefit the patient's body, mind and family. have had a huge impact. Conservative treatment for deformity correction has disadvantages such as complex operation, easy recurrence, and poor generalization. Surgery can also be used to correct deformity; there are disadvantages such as skin necrosis, knee articular cartilage extrusion, joint dislocation, vascular and nerve injury, higher deformity recurrence, and joint stiffness in surgical correction of deformity, and surgical treatment is expensive. , large damage, easy joint stiffness and other disadvantages.

Ilizarov tension-stress law (LTS) is a theory of limb regeneration and functional reconstruction founded by Russian medical expert Ilizarov in the 1950s; it is recognized as the fourth milestone of modern orthopedics; based on Ilizarov tension-stress law theoretical basis, How to adjust the stress of the muscles around the genu varus under a certain stretching effect through external fixation technology, reach the normal mechanical angle, and relieve the pain of the patient is an urgent problem to be solved in clinical rehabilitation.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a knee valgus rehabilitation orthosis, which can effectively correct knee valgus and can be comprehensively adjusted according to the different needs of individual patients. It has a simple structure and is economical and applicable.

The technical scheme adopted in the present invention is:

A knee valgus rehabilitation orthosis, comprising a frame, a motor, a link mechanism, a knee joint orthosis and an ankle joint orthosis;

The frame includes two guide rails, some support rods and a support base plate; the two guide rails are arranged in parallel, guide rails are provided with guide rail grooves on the opposite inner sides, and several support rods are evenly arranged between the two guide rails, and the support base plate is arranged At the rear end of the two guide rails; the motor is set at the rear end of the rack through the supporting bottom plate;

The link mechanism includes a transmission rod, a thigh adjustment rod, a calf adjustment rod, a pedal guide rod, a guide connecting plate and a screw support plate; , driven by a motor; two thigh adjustment rods are arranged symmetrically and vertically at both ends of the transmission rod, and the rear ends of the two calf adjustment rods are hingedly connected with the front ends of the two thigh adjustment rods; the pedal guide rod is arranged between the two guide rails near the front end of the frame The two ends of the pedal guide rod are slidingly arranged in the guide rail grooves of the two guide rails; the two guide connecting plates are correspondingly arranged on the two ends of the pedal guide rod, and the lower part of the rear side of the two guide connecting plates is provided with connecting holes. The front ends of the shank connecting rods are respectively connected to the two guide connecting plates through connecting holes; the two lead screw support plates are relatively arranged on the inner side of the two guide connecting plates, and the lower ends of the two lead screw support plates are also installed on the pedal guide rods;

The knee orthopedic part is arranged at the hinge position of the thigh adjustment rod and the calf adjustment rod; the knee orthopedic part includes a thigh support plate, a calf support plate and an elastic correction belt; the thigh support plate is arranged between the front ends of the two thigh adjustment rods, The calf support plate is set between the rear ends of the two calf support rods, and the two ends and the middle of the thigh support plate and the calf support plate are provided with long holes for the installation of the elastic correction belt; the middle part of the elastic correction belt is provided with a spacer belt, and the elastic correction The two ends of the belt and the lower end of the interval belt pass through the long holes on the thigh support plate and the calf support plate respectively;

The ankle orthopedic part includes a bottom plate, an adjustment screw, a movable foot pedal and a fixing belt; the bottom plate is a rectangular plate, and the lower and upper sides of the bottom plate are respectively provided with perforations and threaded through holes, and the two bottom plates pass through the lower end. The perforations are set side by side on the pedal guide rod, the adjusting screw is set through the threaded through hole on the top of the two bottom plates, and the two ends of the adjusting screw are respectively set through the two screw support plates; the two movable pedals are respectively set on the On the two base plates, a U-shaped edge protection is arranged on the movable footboard, and long holes are arranged on both sides of the U-shaped edge protection, and the fixing belt is arranged on the movable footboard through the long hole for installation.

Specifically, the lower end of the movable pedal is hingedly connected to the bottom plate through a pin shaft, a slider is arranged on the front surface of the bottom plate, an arc-shaped chute is arranged on the rear surface of the movable pedal, and the upper end of the movable pedal passes through The matching of the arc chute and the slide block is connected with the upper end of the base plate.

Specifically, both the thigh adjustment rod and the calf adjustment rod are telescopic rods with adjustable lengths; they can be used by patients of different heights.

Specifically, the rear end of the frame is also provided with a limit cover plate, and the two ends of the limit cover plate are respectively provided with limit grooves corresponding to the two thigh adjustment rods, and the limit grooves and the support base plate jointly limit the height of the thigh adjustment rods. The range of the included angle θ when moving relative to the guide rail is 0°-90°.

Specifically, a rotating handle is provided at one end of the adjusting screw.

Specifically, the knee valgus rehabilitation orthosis also includes a controller system, the control system includes a single-chip controller and a motor driver; the single-chip controller controls the motor driver, and the motor driver drives the motor to drive the transmission rod to move.

More specifically, the single-chip controller is provided with a display screen and buttons.

More specifically, the single-chip controller selects and sets the rotation angle, frequency and time of the drive rod driven by the motor through buttons.

When in use, adjust the telescopic length of the thigh adjustment rod and the calf adjustment rod according to the height of the patient, pass the patient's legs through the elastic orthopedic belts on the thigh support board and the calf support board respectively, and pass the correction direction and position according to the patient's needs. The elastic correction belt fixes the patient's thigh and calf on the thigh support board and the calf support board respectively; the patient's feet are placed on the movable foot board and fixed by the fixing belt, and the distance and position of the feet are adjusted by adjusting the screw. Treatment requirements, select the required movement angle range, speed and time through the buttons of the single-chip controller, the single-chip controller controls the motor driver to drive the motor to drive the transmission rod with the set parameters, and drive a series of actions of the linkage mechanism, the pedal guide rod Move back and forth along the guide rail groove of the guide rail, and drive the ankle joint orthopedic part to swing in the front and rear direction with the pedal guide rod as the fulcrum. During the exercise, the patient's knee joint and ankle joint are corrected at the same time.

Owing to adopting above-mentioned technical scheme, the present invention has following advantage:

The present invention has the advantages of simple structure, high degree of coordination, and convenient use, which can meet the needs of different patients. The setting of the control system can accurately control the range of angles, speeds, and movements required for valgus rehabilitation and orthopedics required by medical treatment. time, improve the accuracy of correction; the double function of the knee orthopedic part and the ankle orthopedic part improves the correction effect.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic diagram of the frame of the present invention.

Fig. 3 is a structural schematic diagram of the linkage mechanism of the present invention.

Fig. 4 is a schematic diagram of the partial connection between the knee orthopedic part and the link mechanism of the present invention.

Fig. 5 is a schematic diagram of the partial connection between the ankle joint orthosis and the link mechanism of the present invention.

Fig. 6 is a schematic diagram of the connection between the movable footboard and the bottom plate of the present invention.

Fig. 7 is a schematic diagram of the bottom plate of the present invention.

Fig. 8 is a schematic diagram of the rear panel of the movable footboard of the present invention.

Fig. 9 is a schematic diagram of the included angle of the range of motion between the guide rail and the thigh adjustment rod of the present invention.

In the figure: 1-frame, 11-guide rail, 12-support rod, 13-support bottom plate, 14-limit cover plate, 2-link mechanism, 21-transmission rod, 22-thigh adjustment rod, 23-calf adjustment Rod, 24-pedal guide rod, 25-guiding connecting plate, 26-screw support plate, 3-knee joint orthopedic part, 31-thigh support plate, 32-calf support plate, 33-elastic correction belt, 331-spacer belt , 4-ankle orthopedic part, 41-bottom plate, 411-pin shaft, 412-slider, 42-adjusting screw, 421-rotating handle, 43-movable foot pedal, 431-U-shaped edge protection, 432-arc Shaped chute, 44-fixed belt.

Detailed ways

The present invention will be further explained below in conjunction with the accompanying drawings and examples, and the protection scope of the present invention cannot be limited by this. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

A kind of knee valgus rehabilitation orthosis combined with accompanying drawings 1-9 includes a frame 1 , a motor, a link mechanism 2 , a knee joint orthosis 3 and an ankle joint orthosis 4 .

Frame 1 comprises two guide rails 11, several support rods 12 and support base plate 13; 11, the support base plate 13 is arranged at the rear end of the two guide rails 11; the motor is arranged at the rear end of the frame 1 through the support base plate 13.

The link mechanism 2 comprises a transmission rod 21, a thigh adjustment rod 22, a shank adjustment rod 23, a pedal guide rod 24, a guide connecting plate 25 and a lead screw support plate 26; the transmission rod 21 is arranged between the two guide rails 11 at the rear end of the frame 1 , the motor is arranged at the rear end of the frame 1 corresponding to the transmission rod 21, the transmission rod 21 is connected with the output shaft of the motor, and is driven by the motor; The rear end of the rod 23 is hingedly connected with the front ends of the two thigh adjustment rods 22, and the thigh adjustment rod 22 and the calf adjustment rod 23 are telescopic rods with adjustable length; the pedal guide rod 24 is arranged between the two guide rails 11 near the front end of the frame The two ends of the pedal guide rod 24 are slidingly arranged in the grooves of the guide rails 11 of the two guide rails 11; the two guide connecting plates 25 are correspondingly arranged on the two ends of the pedal guide rod 24, and the rear side lower parts of the two guide connecting plates 25 are arranged There are connecting holes, and the front ends of the two shank connecting rods are respectively connected with the two guide connecting plates 25 through the connecting holes; The lower end also passes through the pedal guide rod 24 .

The knee orthopedic part 3 is arranged at the hinge position of the thigh adjustment rod 22 and the calf adjustment rod 23; the knee orthopedic part 3 includes a thigh support plate 31, a calf support plate 32 and an elastic correction belt 33; the thigh support plate 31 is arranged on two thighs Between the front ends of the adjustment rods 22, the calf support plate 32 is arranged between the rear ends of the two calf support bars 12, and the two ends and the middle of the thigh support plate 31 and the calf support plate 32 are provided with long holes for the installation of the elastic correction belt 33 The middle part of the elastic correction belt 33 is provided with a spacer belt 331, and the lower ends of the elastic correction belt 33 and the lower end of the spacer belt 331 pass through the long holes on the thigh support plate 31 and the calf support plate 32 respectively.

The ankle joint orthopedic part 4 comprises a base plate 41, an adjustment screw 42, a movable pedal 43 and a fixed belt 44; the base plate 41 is a rectangular plate, and the lower end side and the upper end side of the base plate 41 are respectively provided with perforations and threaded through holes. The two base plates 41 are arranged side by side on the pedal guide rod 24 through the perforations at the lower ends, and the adjusting screw 42 is arranged through the threaded through holes at the upper ends of the two base plates 41, and the two ends of the adjusting screw 42 pass through the two screw support plates 26 respectively. Setting, one end of the adjusting lead screw 42 is provided with a rotary handle 421; two movable pedals 43 are arranged on two base plates 41 respectively, and the lower ends of the movable pedals 43 are hingedly connected with the base plate 41 through a pin shaft 411, and the front plate surface of the base plate 41 A slide block 412 is arranged on the top, and an arc-shaped chute 432 is arranged on the rear plate surface of the movable foot pedal 43, and the upper end of the movable foot pedal 43 is connected with the upper end of the base plate 41 through the cooperation of the arc-shaped chute 432 and the slide block 412; Pedal 43 is provided with U-shaped edge protection 431, and U-shaped edge protection 431 two sides are provided with installation elongated holes, and fixed belt 44 is arranged on movable pedal 43 through installation elongated holes.

Preferably, the rear end of the frame 1 is also provided with a limit cover 14, and the two ends of the limit cover 14 are respectively provided with limit grooves corresponding to the two thigh adjustment rods 22, and the limit groove and the support base plate 13 jointly limit the legs. The included angle θ of the adjusting rod 22 when moving relative to the guide rail 11 ranges from 0° to 90°.

Preferably, the knee valgus rehabilitation orthosis also includes a controller system, the control system includes a single-chip controller and a motor driver; the single-chip controller is provided with a display screen and buttons, the single-chip controller is connected with the motor driver, and the motor driver drives the motor to drive the drive The rod 21 moves; the single-chip controller selects and sets the rotation angle, frequency and time of the motor driving the transmission rod 21 through buttons.

When in use, adjust the telescopic length of the thigh adjustment rod 22 and the calf adjustment rod 23 according to the height of the patient, pass the patient's legs through the elastic orthopedic belts on the thigh support plate 31 and the calf support plate 32 respectively, and correct the direction according to the patient's needs and position, the patient's thigh and calf are respectively fixed on the thigh support plate 31 and the calf support plate 32 through the elastic correction belt 33; the patient's feet are placed on the movable foot board 43, and are fixed by the fixing belt 44. Bar 42 adjusts the distance and position of both feet. According to the treatment requirements, the required range of motion angle, speed and time are selected through the buttons of the single-chip controller. A series of actions of the link mechanism 2, the pedal guide rod 24 moves back and forth along the guide rail 11 groove of the guide rail 11, and drives the ankle joint orthopedic part 4 to swing in the front-rear direction with the pedal guide rod 24 as the fulcrum. Orthopedic treatment of joints and ankles.

The unspecified parts of the present invention are prior art.

The embodiments selected herein for the purpose of disclosing the invention of the present invention are considered suitable at present, but it should be understood that the present invention is intended to include all changes and improvements of the embodiments belonging to the concept and scope of the invention .

Claims (8)

1. A knee varus and valgus rehabilitation orthosis is characterized in that: comprises a frame, a motor, a connecting rod mechanism, a knee joint orthopedic part and an ankle joint orthopedic part;

the rack comprises two guide rails, a plurality of support rods and a support bottom plate; the two guide rails are arranged in parallel, guide rail grooves are formed in the inner side edges of the guide rails facing the guide rails, the plurality of support rods are uniformly arranged between the two guide rails, and the support bottom plate is arranged at the rear ends of the two guide rails; the motor is arranged at the rear end of the frame through the supporting bottom plate;

the connecting rod mechanism comprises a transmission rod, a thigh adjusting rod, a shank adjusting rod, a pedal guide rod, a guide connecting plate and a screw rod supporting plate; the transmission rod is arranged between the two guide rails at the rear end of the rack, and the transmission rod is connected with an output shaft of the motor and driven by the motor; the two thigh adjusting rods are symmetrically and vertically arranged at the two ends of the transmission rod, and the rear ends of the two shank adjusting rods are hinged with the front ends of the two thigh adjusting rods; the pedal guide rod is arranged between the two guide rails close to the front end of the rack, and the two ends of the pedal guide rod are arranged in the guide rail grooves of the two guide rails in a sliding manner; the two guide connecting plates are correspondingly arranged at the two ends of the pedal guide rod, the lower parts of the rear side edges of the two guide connecting plates are provided with connecting holes, and the front ends of the two shank connecting rods are respectively connected with the two guide connecting plates through the connecting holes; the two lead screw supporting plates are oppositely arranged on the inner sides of the two guide connecting plates, and the lower ends of the two lead screw supporting plates are also arranged on the pedal guide rod in a penetrating manner;

the knee joint orthopedic part is arranged at the position where the thigh adjusting rod is hinged with the shank adjusting rod; the knee joint orthopedic part comprises a thigh supporting plate, a shank supporting plate and an elastic correcting belt; the thigh supporting plate is arranged between the front ends of the two thigh adjusting rods, the shank supporting plate is arranged between the rear ends of the two shank supporting rods, and the two ends and the middle part of the thigh supporting plate and the shank supporting plate are provided with long holes for installing elastic correcting belts; the middle part of the elastic correction belt is provided with a spacing belt, and the two ends of the elastic correction belt and the lower end of the spacing belt respectively penetrate through the long holes in the thigh supporting plate and the shank supporting plate;

the ankle joint orthopedic part comprises a bottom plate, an adjusting screw rod, a movable pedal and a fixing belt; the bottom plates are rectangular plates, the side edges of the lower ends and the side edges of the upper ends of the bottom plates are respectively provided with a through hole and a threaded through hole, the two bottom plates are arranged on the pedal guide rod in parallel through the through holes of the lower ends, the adjusting screw rod penetrates through the threaded through holes of the upper ends of the two bottom plates to be arranged, and the two ends of the adjusting screw rod penetrate through the two screw rod supporting plates respectively; the two movable foot pedals are respectively arranged on the two bottom plates, the movable foot pedals are provided with U-shaped protective edges, two side edges of the U-shaped protective edges are provided with installation long holes, and the fixing belts are arranged on the movable foot pedals through the installation long holes.

2. The knee varus and valgus rehabilitation orthosis of claim 1, wherein: the lower end of the movable pedal is hinged with the bottom plate through a pin shaft, a sliding block is arranged on the front plate surface of the bottom plate, an arc-shaped sliding groove is arranged on the rear plate surface of the movable pedal, and the upper end of the movable pedal is connected with the upper end of the bottom plate through the matching of the arc-shaped sliding groove and the sliding block.

3. The knee varus and valgus rehabilitation orthosis of claim 1, characterized in that: the thigh adjusting rod and the shank adjusting rod are telescopic rods with adjustable lengths.

4. The knee varus and valgus rehabilitation orthosis of claim 1, wherein: the rear end of the rack is also provided with a limiting cover plate, two ends of the limiting cover plate are respectively provided with a limiting groove corresponding to the two thigh adjusting rods, and the limiting groove and the supporting base plate jointly limit the range of an included angle theta between the thigh adjusting rods and the guide rail when the thigh adjusting rods move relative to the guide rail to be 0-90 degrees.

5. The knee varus and valgus rehabilitation orthosis of claim 1, wherein: one end of the adjusting screw rod is provided with a rotating handle.

6. The knee varus and valgus rehabilitation orthosis of claim 1, wherein: the knee internal and external turning rehabilitation orthosis also comprises a controller system, and the control system comprises a single chip microcomputer controller and a motor driver; the single chip microcomputer controller controls the motor driver, and the motor driver drives the motor to drive the transmission rod to act.

7. The knee varus and valgus rehabilitation orthosis of claim 6, wherein: and the singlechip controller is provided with a display screen and keys.

8. The knee varus and valgus rehabilitation orthosis of claim 6, wherein: the single chip microcomputer controller selectively sets the rotation angle, the frequency and the time of the motor driving the transmission rod through the keys.

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