Application of a parallel robot in lower limb rehabilitation: A brief capability study

Robotic rehabilitation has a significant potential to reduce the clinical labor costs of physiotherapy. Robotic therapy allows patients to have more in-depth repetitive movements while the therapists evaluate the progress of the recovery. This paper investigates the potential of a 6 degrees of freedom parallel robot, designed and built at the University of Birmingham, for use in robotic rehabilitation of stroke patients. The foot trajectories of eight post-stroke patients were recorded and analyzed in a gait laboratory. A graphical user interface (GUI) has been designed, which enables the physiotherapist to select the desired exercise from a dedicated database. Three different rehabilitation exercises were investigated: hip flexion/extension, ankle dorsiflexion /plantarflexion, and marching. The results show that the robot was able to repeat all of these foot trajectories successfully, while being able to lift 200kg load in its dynamic mode. This suggests that the robot has the capability to successfully deliver lower limb rehabilitation exercises.

[1]  Wei Meng,et al.  Recent development of mechanisms and control strategies for robot-assisted lower limb rehabilitation , 2015 .

[2]  A. Ghosal,et al.  Geometric characterization and parametric representation of the singularity manifold of a 6–6 Stewart platform manipulator , 2006 .

[3]  G. Kwakkel,et al.  What Is the Evidence for Physical Therapy Poststroke? A Systematic Review and Meta-Analysis , 2014, PloS one.

[4]  Mozafar Saadat,et al.  Free singularity path planning of hybrid parallel robot , 2013 .

[5]  Dasgupta Bhaskar,et al.  A Newton-Euler formulation for the inverse dynamics of the Stewart platform manipulator , 1998 .

[6]  Ferdinando A. Mussa-Ivaldi,et al.  Robot-assisted adaptive training: custom force fields for teaching movement patterns , 2004, IEEE Transactions on Biomedical Engineering.

[7]  Nikolaos G. Tsagarakis,et al.  Control strategies for ankle rehabilitation using a high performance ankle exerciser , 2010, 2010 IEEE International Conference on Robotics and Automation.

[8]  Alireza Rastegarpanah.  A methodology for the Lower Limb Robotic Rehabilitation system , 2016 .

[9]  C. Burgar,et al.  MIME robotic device for upper-limb neurorehabilitation in subacute stroke subjects: A follow-up study. , 2006, Journal of rehabilitation research and development.

[10]  Sheng Quan Xie,et al.  An iterative fuzzy controller for pneumatic muscle driven rehabilitation robot , 2011, Expert Syst. Appl..

[11]  S A Kautz,et al.  Interlimb influences on paretic leg function in poststroke hemiparesis. , 2005, Journal of neurophysiology.

[12]  A. Ghosal,et al.  An algebraic formulation of kinematic isotropy and design of isotropic 6-6 Stewart platform manipulators , 2008 .

[13]  Mozafar Saadat,et al.  Motion Simulation of a Hybrid Parallel Robot for Ankle Rehabilitation , 2014 .

[14]  Mozafar Saadat,et al.  Lower Limb Rehabilitation Using Patient Data , 2016, Applied bionics and biomechanics.

[15]  Li-Chen Fu,et al.  Output Feedback Sliding Mode Control for a Stewart Platform With a Nonlinear Observer-Based Forward Kinematics Solution , 2013, IEEE Transactions on Control Systems Technology.

[16]  Clément Gosselin,et al.  Maximal singularity-free orientation workspace over a position region of Gough–Stewart platform , 2015, Adv. Robotics.

[17]  Alberto Borboni,et al.  Parallel Robot for Lower Limb Rehabilitation Exercises , 2016, Applied bionics and biomechanics.

[18]  Mingming Zhang,et al.  Effectiveness of robot-assisted therapy on ankle rehabilitation – a systematic review , 2013, Journal of NeuroEngineering and Rehabilitation.

[19]  Jeffrey A. Lewis,et al.  Haptic effects for virtual reality-based post-stroke rehabilitation , 2003, 11th Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2003. HAPTICS 2003. Proceedings..

[20]  K. Srinivasan,et al.  Kinematic and dynamic analysis of Stewart platform-based machine tool structures , 2003, Robotica.

[21]  Mozafar Saadat,et al.  Path planning of the hybrid parallel robot for ankle rehabilitation , 2014, Robotica.