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LOPES (exoskeleton)

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LOPES aims to support and not take over those tasks that the patient is unable to perform without help using an impedance control scheme. This will lead to a more active participation from the patient's side. The tradeoff for more active walking will likely be a smaller overall distance during therapy sessions. The implication of selective function support is that the robot will have two extreme modes in which it should be able to function, these are:

  • Patient in charge: The goal of the robot is to minimize the interaction forces between the patient and the robot in order for the patient to walk freely without feeling the robot. This mode will be active mostly for the non-paretic side of the patient and during those phases of the walking cycle that the robot does not need to assist.
  • Robot in charge: The goal of this mode is to take control of the patient. The robot will take over the functions which the patient is unable to perform. The robot will most likely operate somewhere between these extremes offering some support at those phases when it is needed to guide the patient towards desirable behavior.

The first prototype has been completed. This prototype has 8 actuated DOF (series elastic actuation[5]) following the design.[6] Clinical evaluations will be done in the course of 2007.[needs update][citation needed]

References

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  1. ^ Colombo, Gery; Jörg, Matthias; Schreier, R; Dietz, Volker (2000). "Treadmill training of paraplegic patients using a robotic orthosis". Journal of Rehabilitation Research and Development. 37 (6): 693–700. PMID 11321005.
  2. ^ Schmidt, H; Sorowka, D; Hesse, Stefan; Bernhardt, R (2003). "Development of a Robotic Walking Simulator for Gait Rehabilitation". Biomedizinische Technik. 48 (10): 281–286. doi:10.1515/bmte.2003.48.10.281. PMID 14606269. S2CID 29801731.
  3. ^ Jezernik, Sašo; Colombo, Gery; Morari, Manfred (2004). "Automatic Gait-Pattern Adaptation Algorithms for Rehabilitation With a 4-DOF Robotic Orthosis". IEEE Transactions on Robotics and Automation. 20 (3): 574. doi:10.1109/TRA.2004.825515. S2CID 14766299.
  4. ^ C. Krewer, F.M., B. Husemann, S. Heller, J. Quintern, E. Koenig. Energy expenditure of hemiparetic patients and healthy subjects: walking in a lokomat vs. on a treadmill. in Evidence-Based Medicine in Neurorehabilitation. 2004. Zürich.
  5. ^ "Series Elastic Actuators Description". Archived from the original on 10 February 2012.
  6. ^ Veneman, J.F.; Ekkelenkamp, R.; Kruidhof, R.; Van Der Helm, F.C.T.; Van Der Kooij, H. (2005), "Design of a Series Elastic and Bowdencable-Based Actuation System for Use as Torque-Actuator in Exoskeleton-Type Training Robots", 9th International Conference on Rehabilitation Robotics, 2005. ICORR 2005, pp. 496–499, doi:10.1109/ICORR.2005.1501150, ISBN 0-7803-9003-2, S2CID 18471782
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