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A compound crank-link mechanism and lower limb rehabilitation training device

A crank-link mechanism and rehabilitation training technology, applied in passive exercise equipment, physical therapy, gymnastics equipment, etc., can solve the problems of patient harm, joint impact, unfavorable popularization and benefit patients

Active Publication Date: 2021-05-04
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 popularization and benefiting the majority of patients; the terminal traction rehabilitation device can simulate the terminal motion trajectory to a certain extent. There are Steel Flex XE-3700 elliptical machines produced by Shidi Fei Company and JOHNSON MX-E5X elliptical machines 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

Method used

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  • A compound crank-link mechanism and lower limb rehabilitation training device
  • A compound crank-link mechanism and lower limb rehabilitation training device
  • A compound crank-link mechanism and lower limb rehabilitation training device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A lower limb rehabilitation training device adopting the above compound crank linkage mechanism, its structure is as follows image 3 As shown, two compound crank linkages are included. Among them, the structure of the compound crank linkage mechanism is as follows: figure 1 As shown, it includes a crank OG, two triangular frames, and a plurality of connecting rods connected to the two triangular frames and the crank OG through the rotating shaft. Among them, the A vertex of the No. 1 triangular frame and the G end of the crank OG pass through the No. 1 connecting rod AG Connection, the B vertex of the first triangle frame is connected with the C vertex of the second triangle frame through the third connecting rod BC, the F vertex of the first triangle frame is connected with the E vertex of the second triangle frame through the fourth connecting rod EF, and the second The E vertex of the triangle frame is connected with the G end of the crank OG through the second con...

Embodiment 2

[0029] Adopt the lower limb rehabilitation training device structure identical with embodiment, difference is:

[0030] 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.

[0031] line segment Length (cm) line segment Length (cm) height 175 DE 317.79 OG 60.34 CE 211.19 AB 313.77 AG 271.53 AF 241.36 EG 422.86 BF 223.26 BC 271.53 cd 387.98 EF 261.21

[0032] After computer simulation, using the compound crank linkage mechanism with the above length, the simulated gait trajectory is as follows: Figure 4 As shown, from which we can find that this trajectory is closer to the gait trajectory of normal people walking.

Embodiment 3

[0034] Adopt the lower limb rehabilitation training device structure identical with embodiment, difference is:

[0035] 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.

[0036] line segment Length (cm) line segment Length (cm) height 175 DE 320.82 OG 58.33 CE 233.32 AB 309.15 AG 291.65 AF 245 EG 437.48 BF 215.82 BC 279.98 cd 419.98 EF 262.49

[0037] After computer simulation, using the compound crank linkage mechanism with the above length, the simulated gait trajectory is as follows: Figure 5 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 composite crank-link mechanism and a lower limb rehabilitation training device. The lower limb rehabilitation training device is composed of left and right composite crank-link mechanisms. The multiple connecting rods connected by the two triangular frames and the cranks can convert the circular motion of the cranks into the simulated gait motion of the D vertex of the second triangular frame through the composite crank link mechanism. Compared with the prior art, the present invention can be scaled up or down according to the height of the patient, and can simulate the gait trajectory and joint angle characteristics of a real person when walking. It is an auxiliary device for the rehabilitation of lower limbs and walking training. It eliminates the adverse impact on the joints and excessive stretching of the muscles in the current general-purpose elliptical machine training, ensures the safety of use, and improves the rehabilitation effect.

Description

technical field [0001] The invention relates to medical rehabilitation equipment, in particular to a composite crank-link 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 muscle atrophy, which hinders 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 single-joint training and multi-joint coordination training, and the movement trajectory is within th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B23/04A61H1/02
Inventor 邹任玲黄云龙胡秀枋徐秀林
Owner UNIV OF SHANGHAI FOR SCI & TECH