虚拟康复的新进展:基于力触觉反馈的上肢运动功能评估

A New Progress in Virtual Rehabilitation:Assessment of Upper Limb Motor Functions Based on Haptic Feedback Technology

近年来,虚拟现实逐渐被应用于脑卒中等患者的运动功能康复,它通过构建高沉浸感、交互性强的“目标导向性”虚拟康复任务,实现了对上肢运动功能的评估。力触觉反馈技术可为患者提供同虚拟环境交互的力触觉,丰富了虚拟评估任务中的感觉输出;此外,力触觉反馈设备具有高精度的数据采集优势,实现了对上肢运动功能更精准的量化评估。通过梳理相关文献,本文介绍了应用于上肢功能评估的常用力触觉反馈设备及其结构特征,总结了4种典型的基于触力反馈设计的虚拟“导向性”评估任务,归纳了用于上肢运动功能评估的生物力学参数及其对应的上肢运动能力,并对该项技术存在的瓶颈及其进一步发展进行了展望。

In recent years,virtual reality has been gradually applied to the motor rehabilitation for stroke patients.The virtual rehabilitation allows the assessment of upper limb motor function by constructing“task-oriented”virtual rehabilitation tasks with high immersion and strong interaction.The haptic feedback technology provides patients with force and tactile interaction with the virtual environment,enabling the multisensory output in the virtual evaluation task.In addition,haptic devices allow the high-precision data acquisition for accurate assessments of upper limb motor function.By reviewing relevant literatures,we introduce the common-used haptic devices and their structural characteristics in this paper.We summarize typical virtual“Task-oriented”assessment tasks based on haptic devices and the biomechanical parameters used for the assessment of upper limb motor function.At the end of this paper,we propose the bottleneck of haptic-based virtual rehabilitation and prospected its further development.