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Gait-simulating lower limb rehabilitation training device based on combined crank-rod mechanisms
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A crank-link mechanism and rehabilitation training technology, which is applied to training equipment for adjusting coordination, training equipment for adjusting cardiovascular system, muscle training equipment, etc., can solve the problems of complex machine structure, patient harm, high cost, etc. The training effect is comprehensive, the simulation trajectory is real, and the effect is good.
Active Publication Date: 2019-06-04
UNIV OF SHANGHAI FOR SCI & TECH
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At present, the main products of lower limb rehabilitation training devices in the market are multi-joint traction lower limb rehabilitation devices and terminal traction rehabilitation devices: the multi-joint traction lower limb rehabilitation devices can realize single-joint training and multi-joint coordination training, and the movement trajectory is within the working space Freely programmable, the multi-joint traction lower limb rehabilitation device can simulate the gait trajectory with high accuracy, but the machine structure is complicated and the cost is high, which is not conducive to benefiting the majority of patients; the terminal traction rehabilitation device simulates the terminal motion trajectory to a certain extent , the representative products are the Steel Flex XE-3700 elliptical machine produced by Shidi Fei Company, the JOHNSON MX-E5X elliptical machine produced by Qiaoshan Company, etc.
These devices take the ankle as the turning point, and the motion trajectory is an ellipse, which cannot accurately simulate the gait trajectory and joint characteristics of people when they walk, and will impact the joints and cause excessive stretching of the muscles. great harm
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Embodiment 1
[0032] A gait simulation lower limb rehabilitation training device based on a composite crank-link mechanism 1, characterized in that the rehabilitation training device includes two composite crank-link mechanisms 1, pedals 2, active and passive training switching units 3, and a base 5 , bracket 6 and handrail 7, its external structure is as follows figure 1 shown.
[0033] Wherein, each compound crank-link mechanism 1 includes a crank OG, two triangular frames, and a plurality of connecting rods connected to the two triangular frames and the crank OG through rotating shafts, wherein, the A vertex of the No. 1 triangular frame and the G of the crank OG The ends are connected through the No. 1 connecting rod AG, the B vertex of the No. 1 triangular frame is connected with the C vertex of the No. 2 triangular frame through the No. 3 connecting rod BC, and the F vertex of the No. 1 triangular frame is connected with the No. The E vertex of the No. 2 triangular frame is connected...
Embodiment 2
[0043] Adopt the lower limb rehabilitation training device structure identical with embodiment, difference is:
[0044] In this embodiment, the lengths of the connecting rods, the side lengths of the triangle frame, the lengths of the cranks and the heights of the lower limb rehabilitation trainers are shown in Table 2.
[0045]
[0046]
[0047] After computer simulation, using the compound crank linkage mechanism with the above length, the simulated gait trajectory is as follows: Figure 7 As shown, from which we can find that this trajectory is closer to the gait trajectory of normal people walking.
Embodiment 3
[0049] Adopt the lower limb rehabilitation training device structure identical with embodiment, difference is:
[0050] In this embodiment, the lengths of the connecting rods, the side lengths of the triangle frame, the lengths of the cranks and the heights of the lower limb rehabilitation trainers are shown in Table 3.
[0052] After computer simulation, using the compound crank linkage mechanism with the above length, the simulated gait trajectory is as follows: Figure 8 As shown, from which we can find that this trajectory is closer to the gait trajectory of normal people walking.
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Abstract
The invention relates to a gait-simulating lower limbrehabilitation training device based on combined crank-rod mechanisms. The device comprises two combined crank-rod mechanisms, pedal plates and anactive and passive training switching unit, through the combined crank-rod mechanisms, the circling motion of the active and passive training switching unit and the gait simulating motion of the pedal plates can be converted, and thus the active rehabilitation training and passive rehabilitation training of a lower limb rehabilitation trainee can be realized. Compared with the prior art, the gait-simulating lower limbrehabilitation training device provided by the invention has the advantages that through the combined crank-rod mechanisms, the circling motion of cranks can be converted into the gait simulating movement of the D vertexes of No.2 triangular frames, and the track of the gait simulating movement most conforms to the gait track generated when a person walks. In addition, the device is provided with two modes including the active rehabilitation training and passive rehabilitation training, and thus the training effect is more comprehensive.
Description
technical field [0001] The invention relates to the technical field of medical rehabilitation equipment, in particular to a gait simulation lower limb rehabilitation training device based on a compound crank linkage mechanism. Background technique [0002] One of the most common sequelae of stroke and brain injury is limb dysfunction. For such patients, long-term bed rest will lead to muscleatrophy, which will hinder the recovery of the disease and future rehabilitation. Passive training in the early stage and active training in the later stage can maintain and restore the range of motion of the patient's joints, help restore the main motor functions of the limbs, and improve the patient's daily life ability. At present, the main products of lower limb rehabilitation training devices in the market are multi-joint traction lower limb rehabilitation devices and terminal traction rehabilitation devices: the multi-joint traction lower limb rehabilitation devices can realize sin...
Claims
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