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This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller.

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Presentation on theme: "This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller."— Presentation transcript:

1 This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller. J Rehabil Res Dev. 2014;51(5):711–26. http://dx.doi.org/10.1682/JRRD.2013.05.0120 Slideshow Project DOI:10.1682/JRRD.2013.05.0120JSP Design and evaluation of prosthetic shoulder controller Joseph E. Barton, PhD; John D. Sorkin, MD, PhD

2 This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller. J Rehabil Res Dev. 2014;51(5):711–26. http://dx.doi.org/10.1682/JRRD.2013.05.0120 Slideshow Project DOI:10.1682/JRRD.2013.05.0120JSP Aim – Develop 2-degree-of-freedom (DOF) shoulder position transducer to control sensing shoulder protraction- retraction and elevation-depression of powered prosthetic humerus. – Develop evaluation protocol based on Fitts’ law to assess device’s performance. Relevance – Study supports development of powered prosthetic shoulder joints for people with shoulder disarticulation and very high-level transhumeral amputation.

3 This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller. J Rehabil Res Dev. 2014;51(5):711–26. http://dx.doi.org/10.1682/JRRD.2013.05.0120 Slideshow Project DOI:10.1682/JRRD.2013.05.0120JSP Method Developed and tested: – 3 control assemblies designed to convert shoulder motion into control signals. – Body socket designed worn on side of thorax that had experienced amputation. Socket sensed shoulder motion via: – Steel rods through proprioceptive and tactile feedback. – Nylon rod through proprioceptive feedback.

4 This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller. J Rehabil Res Dev. 2014;51(5):711–26. http://dx.doi.org/10.1682/JRRD.2013.05.0120 Slideshow Project DOI:10.1682/JRRD.2013.05.0120JSP Results Transducers providing resistance to shoulder movement performed better than those providing no resistance. Position control scheme (effector velocity proportional to shoulder position) performed better than velocity control scheme. Transducer could control motion along any 2 DOFs. Transducer could be used in 4-DOF control scheme by sequentially controlling 2 DOFs at a time.

5 This article and any supplementary material should be cited as follows: Barton JE, Sorkin JD. Design and evaluation of prosthetic shoulder controller. J Rehabil Res Dev. 2014;51(5):711–26. http://dx.doi.org/10.1682/JRRD.2013.05.0120 Slideshow Project DOI:10.1682/JRRD.2013.05.0120JSP Conclusion Evaluation protocol has general applicability for researchers and practitioners. – Researchers: compare different prosthesis designs and control schemes – Practitioners: evaluate and train people with amputation in prosthesis use.

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