A wheelchair waist assist device with four rotating joint axes meeting

Abstract

The invention relates to a wheelchair waist assist device (a device installed on the wheelchair that provides power to the chest and waist to drive the trunk to move) with four rotating joint axes meeting. A motor drive unit, base. The user achieves partial movement of the torso by connecting the chest to the platform and the base to the hips. The present invention is a 2T2R 4-degree-of-freedom parallel mechanism, which can realize the flexion and extension movement, torsion movement and some combined movements of the human trunk, and can meet the rehabilitation movement needs of some SCI (spinal injury) patients and the sitting posture state of some cerebral palsy patients. The structure is relatively simple to meet some daily life requirements (independently picking vegetables, fetching objects, etc.). The motion that can be realized by the moving platform of the device conforms to the principle of human kinematics, which will make the traction motion of the trunk performed by the device more maneuverable, and can improve the rehabilitation quality and life quality of some patients.

Description

technical field [0001] The invention relates to a wheelchair waist assist device (a device installed on the wheelchair to provide power to the thoracic and waist to drive the trunk movement), in particular to a parallel mechanism for assisting the rehabilitation training of spinal cord injury patients and the daily activities of cerebral palsy patients. Background technique [0002] For many people, sitting up on their own doesn't require rethinking. However, for people with impaired trunk motor control, sitting independently can be a difficult balance task. Balanced sitting tasks are difficult for many different demographic groups. The incidence of cerebral palsy per 1000 third graders was 3.1. Of the affected population, 32% had a gross motor function classification system (GMFCS) grade IV or V. They mainly use wheelchairs as their main means of transportation, but it is more troublesome for them to sit inconveniently. Another group affected are patients with spinal co...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wheelchair lumbar booster device in which the axes of the four rotating joints meet, so as to solve the problem that the above-mentioned device does not support the torsional motion that requires a lot of exercise in daily life.

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