Development of a Tele-Rehabilitation System for Outcome Evaluation of Physical Therapy
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This paper presents a portable tele-assessment system designed for remote evaluation of the hypertonic elbow joint of neurologically impaired patients. A patient’s upper limb was securely strapped to a portable limb-stretching device which is connected through Internet to a portable haptic device by which a clinician remotely moved the patient’s elbow joint and felt the resistance from the patient. Elbow flexion angle and joint torques were measured from both master and slave devices and bilaterally fed back to their counterparts. In order to overcome problems associated with the network latency, two different tele-operation schemes were proposed depending on relative speed of tasks compared to the amount of time delay. For slow movement tasks, the bilateral tele-operation was achieved in real-time by designing control architectures after causality analysis. For fast movement tasks, we used a semi-real-time tele-operation scheme which provided the clinicians with stable and transparent feeling. The tele-assessment system was verified experimentally on patients with stroke. The devices were made portable and low cost, which makes it potentially more accessible to patients in remote areas.
Abstract
This paper presents a portable tele-assessment system designed for remote evaluation of the hypertonic elbow joint of neurologically impaired patients. A patient’s upper limb was securely strapped to a portable limb-stretching device which is connected through Internet to a portable haptic device by which a clinician remotely moved the patient’s elbow joint and felt the resistance from the patient. Elbow flexion angle and joint torques were measured from both master and slave devices and bilaterally fed back to their counterparts. In order to overcome problems associated with the network latency, two different tele-operation schemes were proposed depending on relative speed of tasks compared to the amount of time delay. For slow movement tasks, the bilateral tele-operation was achieved in real-time by designing control architectures after causality analysis. For fast movement tasks, we used a semi-real-time tele-operation scheme which provided the clinicians with stable and transparent feeling. The tele-assessment system was verified experimentally on patients with stroke. The devices were made portable and low cost, which makes it potentially more accessible to patients in remote areas.
참고문헌 (19)
- Moseley AM., "The effect of casting combined with stretching on passive ankle dorsiflexion in adults with traumatic head injuries", Physical Therapy, 77, pp.240~247 (1997)
- Hepburn GR., "Case studies: contracture and stiff joint manage- ment with Dynasplint", J. Orthop. Sports Physical Therapy, 8, pp.498~504 (1987)
- Salter RB, "The biological concept of continuous passive motion of synovial joints", Clin. Orthop. Rel. Res, 242, pp.12~25 (1989)
- Krebs HI, "Robot-Aided Neurorehabilitation", IEEE Trans. Rehab, 6, pp.75~87 (1998)
- Reinkensmeyer DJ, "Guidance-based quantification of arm impairment following brain injury: a pilot study", IEEE Trans. Rehab, 7, pp.1~11 (1999)
- Klutke PJ, "Practical evaluation of standard-based low-cost video conferencing in telemedicine and epidemiological applications", Medical Informatics and the Internet in Medicine, 24, pp.135~145 (1999)
- Tam SF, "Evaluating the efficacy of tele-cognitive rehabilitation for functional performance in three case studies", Occupational Therapy International, 10, pp.20~38 (2003)
- Lawrence D, "Stability and transparency in bilateral teleoperaton", IEEE Trans. Robotics and Automation, 9, pp.624~637 (1993)
- Anderson R, "Bilateral control of teleoperators with time delay", IEEE Trans. on Automatic Control, 34, pp.494~501 (1989)
- Niemeyer G,and Slotine JJ.Stable Adaptive Teleoperation, "IEEE Journal of Oceanic Engineering", 16, pp.152~162 (1991)
- Adams R, "Stable Haptic Interaction with Virtual Environments", IEEE Trans. Robotics and Automation, 15, pp.465~474 (1999)
- Hashtrudi-Zaad K, "Analysis of control architectures for teleoperation systems with impedance", adm- ittance master and slave manipulators, 2001, pp.20, 419~445
- Hannaford B, "Time-Domain Passivity Control of Haptic Interfaces", IEEE Trans. Robotics and Automation, 18, pp.1~10 (2002)
- Park HS, "Causality analysis using bond-graph and its significance in bilateral teleoperation", Proc. of IEEE, 2002, 2991~2998
- Park HS, "Significance of Causality Analysis for Transparent Teleoperation" (2005), Proc. of IEEE Int. Conf. on Robotics and Automation.
- Rosenberg RC, "Exploiting Bond Graph Causality in Physical System Models", ASME J. Dyn. Sys. Measurement and Control, 109, pp.378~383 (1987), 378-383
- Slotine JJ, "Applied Nonlinear Control" (1991), Prentice-Hall
- Condliffe EG, "Reliability of elbow stretch reflex assessment in chronic post-stroke hemiparesis", Clinical Neurophysiology, 116, pp.1870~1878 (2005)
- Obraczka K, "Network latency metrics for server proximity" (2000), Proc. Of Global Telecommunications Conference