CN211797557U - Bionic knee joint rehabilitation training device with passive resilience function - Google Patents

Abstract

A bionic knee joint rehabilitation training device with a passive rebound function comprises thigh protectors, shank protectors, connecting rod pieces, rotating arms, an air spring balancing device and an electromagnetic lock device. The thigh protective clothing and the shank protective clothing are provided with binding bands for fixing, and are connected with the rotating arm through a connecting rod piece; the connecting rod piece and the connecting part of the rotating arm form an adjusting device; the electromagnetic force lock device comprises an electromagnetic block, a sliding rail, a sliding groove and a top cover, the electromagnetic block slides on the sliding rail, the electromagnetic force lock device and the air spring balancing device are fixed on the rotating arm, and one end of the rotating arm rotates around the motion of the main shaft to realize that the thigh protective tool and the shank protective tool rotate in an angle mode in a plane. The utility model discloses can help the patient to carry out the rehabilitation training of knee joint, the flexible system that air spring balancing unit and electromagnetic locking device constitute has embodied passive resilience characteristic, can avoid the secondary damage that traditional rehabilitation apparatus's rigid motion brought.

Description

Bionic knee joint rehabilitation training device with passive resilience function

Technical Field

The utility model relates to the field of medical rehabilitation instruments, in particular to a knee joint rehabilitation device with energy-saving and passive resilience functions.

Background

At present, can divide into wearing formula and non-wearing formula to knee joint rehabilitation training device, wearing formula generally indicates to dress in the utensil of human shank, possess certain angular range of spacing module control, and supplementary knee joint carries out bucking and extension motion to reach the purpose of early recovered knee joint. The conventional wearable knee joint rehabilitation device is small in size, convenient to operate and suitable for being used by a patient in environments such as a family, but has the defects of insufficient power, poor rehabilitation effect and easiness in causing secondary damage to the patient; compared with a wearable device, the non-wearable device has stronger functions, is not limited to a certain joint (knee, hip and ankle joint), but is used for carrying out rehabilitation training on the whole upper limb or lower limb of a patient, can increase the muscle strength of the patient and improve the muscle control capability of the patient, but the device is huge and high in manufacturing cost, is generally common in a rehabilitation medical center, so that the patient can only recover to the rehabilitation center, and is very inconvenient for the patient with dyskinesia. Meanwhile, corresponding rehabilitation auxiliary personnel are needed to be matched during rehabilitation training, and the operation is complex, time-consuming and labor-consuming.

The driving device of the rehabilitation device is divided into a traditional motor driving device and a gas and liquid device driving device. The motor drive belongs to rigid drive, and is generally matched with a corresponding rotation-to-linear motion mechanism (such as a worm gear) to assist in realizing the flexion and extension motions of the knee joint. However, the motor battery has large energy consumption, high price and heavy weight, so the motor battery is not suitable for long-term wearing by patients; the gas and liquid device belongs to flexible drive and has the phenomenon of insufficient power. In addition, the whole set of system is complex and large in size, and is not suitable for the wearable rehabilitation device. The traditional knee joint rehabilitation training device has the advantages of sound function, huge body with protective measures, high manufacturing cost, time and labor consumption, and inconvenience for patients to carry out rehabilitation training by themselves; although the small-sized rehabilitation instrument is convenient to operate, the traditional motor rigid driving mode easily causes secondary injury to patients. When the two conditions are combined, the utility model relates to a small-size convenient knee joint rehabilitation training device capable of well avoiding secondary injury has very wide application prospect.

The African ostrich is the two-legged animal with the largest weight and the fastest speed existing in the world. The weight of the adult can reach 100 kg, the lasting speed is 50-60 km/h, the lasting speed can last for more than 30 minutes, and the sprinting speed exceeds 70 km/h. High speed running not only benefits from the ostrich foot superiority, but also correlates with the structural characteristics of the midtarsal joints of the ostrich. The passive resilience characteristic is one of the main characteristics of the ligaments of the ostrich midtarsal joint, and is based on the rolling-sliding type joint of the ostrich midtarsal joint, joint engagement-non-engagement change is caused by the interaction of the apophysis and the ligaments in the bending and rotating process, and the passive resilience characteristic means that when the ostrich joint is in the maximum extension state, excessive extension of the joint is prevented due to the limiting effect of the rear part of the distal end of the tibialis midtarsal bone. When the joint is bent at a certain angle, the tarsometatarsal bones are released and return to the original position, i.e., the maximum extension position of the joint.

The utility model discloses based on engineering bionics principle, the device designs the passive resilience characteristic of imitative ostrich midtarsal joint, realizes passive resilience function to reach the patient and can avoid the secondary injury effect when using this utility model to carry out knee joint rehabilitation training, this utility model itself still has simple easy portable moreover, easy and simple to handle, advantages such as energy-conservation.

Disclosure of Invention

In order to better solve the problem, the utility model discloses imitate ostrich midtarsal joint passive resilience characteristic, design a knee joint rehabilitation training device that is light, energy-conserving, can avoid the secondary injury. The utility model discloses based on engineering bionics principle, the device designs the passive resilience characteristic of imitative ostrich midtarsal joint, realizes passive resilience function to reach the patient and can avoid the secondary injury effect when using this utility model to carry out knee joint rehabilitation training, this utility model itself still has simple easy portable moreover, easy and simple to handle, advantages such as energy-conservation.

The utility model comprises a connecting rod piece, a thigh protector, a first chute, a main shaft, a shank protector, an air spring balancing device, an electromagnetic lock device, a fastening bolt, a rotating arm and a binding band; the thigh and the shank of the patient are respectively fixed with the thigh protective tool and the shank protective tool through the binding bands, and the thigh protective tool and the shank protective tool are connected with the connecting rod piece through bolts; the connecting rod piece is connected with the rotating arm through a bolt; the first sliding grooves on the rotating arms are connected through a fastening bolt, deep groove ball bearings are embedded in holes at one ends of the rotating arms, and bearings of the two rotating arms are sleeved on the main shaft;

two ends of the gas spring balancing device are respectively fixed on the two rotating arms;

as shown in the figure, the electromagnetic force lock device comprises a slide rail, a top cover, electromagnetic blocks and second sliding grooves, wherein the slide rail is internally provided with the two electromagnetic blocks, the top cover is arranged above the slide rail, the second sliding grooves are arranged at two ends of the slide rail and are respectively arranged on sliding columns on two rotating arms, and the second sliding grooves can move left and right under the limitation of the sliding columns; the two electromagnetic blocks are respectively connected with the two rotating arms, the electromagnetic blocks can slide on the sliding rails, and the two electromagnetic blocks can slide inwards to drive the thigh protective tool and the shank protective tool to bend; the circuit of the electromagnetic force lock device is arranged inside the top cover.

The material of the cavity of the large and lower leg protective gear is medical plastic, and the material is tough, elastic and has good chemical inertia and biological safety. The inside laminating shank material of cavity is soft EVA, and the cavity bandage adopts the mode of nylon fastener to fasten.

The air spring balancing device and the electromagnetic lock device are both fixed between the two rotating arms, the stroke of the air spring balancing device ensures the included angle range of the two rotating arms, and the condition of overlarge or undersize angle can not occur; under the circumstances of electrification of the electromagnetic force lock device, the electromagnetic block can slide along the slide rail and adsorb in opposite directions, the outage magnetic force disappears, and the electromagnetic block is in a free state. The gas spring balancing device and the sliding block are fixed with the rotating arm, and the linear motion of the gas spring balancing device and the sliding block can drive the rotating arm to rotate, so that the knee joint is assisted to perform flexion and extension motions.

The utility model has the advantages that:

the utility model has the advantages of compact and reasonable structure, it has the spout to open on the rotor arm, makes things convenient for the long crowd of different height legs to use, adjusts after dressing to suitable position tightly decide alright carry out the rehabilitation training, and man-machine laminating degree is high, and the size is carried easily for a short time, installs simple convenient operation.

The passive rebound characteristic is realized by the gas spring balancing device and the electromagnetic force lock device, the included angle between the two rotating arms is changed from small to large, namely, the energy consumption is not needed in the process of changing the knee joint from a flexion state to an extension state, and the energy-saving characteristic of the rehabilitation device is embodied.

The rehabilitation device is driven without adopting a rigid driving mode of a traditional motor, the electromagnetic force lock device can ensure enough power, the rotating speed is ensured to accord with the condition of a patient under the action of the bidirectional damping of the air spring, and the secondary damage of the patient caused by rigid driving is avoided.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of another perspective of the present invention.

Fig. 3 is a schematic exploded perspective view of the electromagnetic lock device of the present invention.

Fig. 4 is a schematic structural view of the present invention at the limit position of flexion, and the included angle between the two rotating arms is 70 °.

Fig. 5 is a schematic structural view of the utility model at the extended limit position, and the included angle between the two rotating arms is 170 °.

Wherein: 1. connecting rod pieces; 2. thigh protectors; 3. a first chute; 4. a main shaft; 5. a shank protector; 6. a gas spring balancing device; 8. an electromagnetic force lock device; 81. a slide rail; 82. a top cover; 83. an electromagnetic block; 84. a second chute; 9. tightening the bolt; 10. a bolt; 11. a rotating arm; 12. and (4) binding the bands.

Detailed Description

As shown in fig. 1 and 2, the present invention includes a connecting rod 1, a thigh protector 2, a first chute 3, a main shaft 4, a shank protector 5, a gas spring balancing device 6, an electromagnetic lock device 8, a fastening bolt 9, a bolt 10, a rotating arm 11 and a binding band 12; the thigh and the shank of the patient are respectively fixed with the thigh protective tool 2 and the shank protective tool 5 through the binding bands 12, and the thigh protective tool 2 and the shank protective tool 5 are connected with the connecting rod piece 1 through the bolts 10; the connecting rod piece 1 is connected with the rotating arm 11 through a bolt; the first sliding chutes 3 on the rotating arms 11 are connected through the fastening bolts 9, deep groove ball bearings are embedded in holes at one ends of the rotating arms 11, and bearings of the two rotating arms 11 are sleeved on the main shaft 4;

two ends of the gas spring balancing device 6 are respectively fixed on the two rotating arms 11;

as shown in fig. 3, the electromagnetic force lock device 8 includes a sliding rail 81, a top cover 82, an electromagnetic block 83 and a second sliding slot 84, the sliding rail 81 has two electromagnetic blocks 83 therein, the top cover 82 is disposed on the sliding rail 81, the two ends of the sliding rail 81 have the second sliding slots 84, the two second sliding slots 84 are respectively disposed on sliding posts on the two rotating arms 11, and the second sliding slots 84 can move left and right under the limitation of the sliding posts; the two electromagnetic blocks 83 are respectively connected with the two rotating arms 11, the electromagnetic blocks 83 can slide on the slide rails 81, and the two electromagnetic blocks 83 can drive the thigh protector 2 and the shank protector 5 to bend when sliding inwards; the lines of the electromagnetic force lock device 8 are installed inside the top cover 82.

Utilize the utility model discloses when carrying out knee joint rehabilitation, including following step:

1) the patient wears the rehabilitation device and fastens his or her legs with the thigh protector 2 and the shank protector 5 by using the band 12, and adjusts the first chute 3 according to his or her comfort level to fix the leg protector with the fastening bolt 9

2) Before the device works, the damping coefficient of the gas spring balancing device 6 is adjusted, and the stroke of a piston rod of the gas spring balancing device 6 is adjusted to be maximum; the electromagnetic blocks 83 are adjusted to the two ends of the sliding rail 81, and the knee joint opening and closing angle is 170 degrees at the moment, as shown in fig. 5.

3) When the device works, the electromagnetic force lock device 8 is electrified, the electromagnetic block 83 can oppositely adsorb and slide along the slide rail 81, the electromagnetic block 83 is fixed with the rotating arm 11, so that the linear motion of the electromagnetic block 83 can drive the rotating arm 11 to rotate, the knee joint can be bent from the stretching limit position in an auxiliary way, and the air spring balancing device 6 has a bidirectional damping effect, so that the knee joint of the air spring balancing device 6 is bent at a low speed, as shown in fig. 4, the bending limit included angle of the two rotating arms is 70 degrees

When the knee joint is in the flexion limit position, the electromagnetic force lock device 8 is powered off, the magnetic force disappears, at the moment, the spring of the air spring balancing device 6 is in a compression state and is to be restored to the initial state under the action of no external force, the spring of the air spring balancing device 6 is connected with the piston rod, so the spring is slowly restored to push the piston rod under the condition of damping, and the piston rod and the cylinder barrel of the air spring are respectively fixed with the rotating arms 11, so that the included angle between the two rotating arms 11 can be driven to be increased, and the knee joint is assisted to be slowly opened from the flexion limit.

And (3) repeating the step 2) and the step 3) to obtain a normal working process of the device, and assisting the knee joint to perform the actions of extension, flexion and extension.

The device is equipped with safety module, is located 6 one end knobs of air spring balancing unit, and the compression volume of spring can be invariable at any time to the self-locking mode, and whole device stop work avoids unexpected emergence.

Claims (1)

1. The utility model provides a bionical knee joint rehabilitation training device with passive kick-back function which characterized in that: the device comprises a connecting rod piece (1), a thigh protector (2), a first sliding chute (3), a main shaft (4), a shank protector (5), an air spring balancing device (6), an electromagnetic lock device (8), a fastening bolt (9), a bolt (10), a rotating arm (11) and a binding belt (12); the thigh and the shank of the patient are respectively fixed with the thigh protective clothing (2) and the shank protective clothing (5) through the binding bands (12), and the thigh protective clothing (2) and the shank protective clothing (5) are connected with the connecting rod piece (1) through the bolts (10); the connecting rod piece (1) is connected with the rotating arm (11) through a bolt; the first sliding grooves (3) on the rotating arms (11) are connected through fastening bolts (9), deep groove ball bearings are embedded in holes at one ends of the rotating arms (11), and bearings of the two rotating arms (11) are sleeved on the main shaft (4);

two ends of the gas spring balancing device (6) are respectively fixed on the two rotating arms (11);

the electromagnetic force lock device (8) comprises a sliding rail (81), a top cover (82), electromagnetic blocks (83) and second sliding grooves (84), wherein the sliding rail (81) is internally provided with the two electromagnetic blocks (83), the top cover (82) is arranged above the sliding rail (81), the two ends of the sliding rail (81) are provided with the second sliding grooves (84), the two second sliding grooves (84) are respectively arranged on sliding columns on the two rotating arms (11), and the second sliding grooves (84) can move left and right under the limitation of the sliding columns; the two electromagnetic blocks (83) are respectively connected with the two rotating arms (11), the electromagnetic blocks (83) can slide on the sliding rails (81), and the two electromagnetic blocks (83) can slide inwards to drive the thigh protector (2) and the shank protector (5) to bend.

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