this article and any supplementary material should be cited as follows: smit g, plettenburg dh, van...

This article and any supplementary material should be cited as follows: Smit G, Plettenburg DH, van der Helm FCT. Design and evaluation of two different finger concepts for body-powered prosthetic hand. J Rehabil Res Dev. 2013;50(9):XX–XX. http://dx.doi.org/10.1682/JRRD.2012.12.0223

Slideshow ProjectDOI:10.1682/JRRD.2012.12.0223JSP

Design and evaluation of two different finger concepts for body-powered

prosthetic handGerwin Smit, MSc, PhD; Dick H. Plettenburg, MSc, PhD;

Frans C. T. van der Helm, MSc, PhD



• Aim– Find efficient energy transmission method for

body-powered prosthetic hand.

• Relevance–Mechanisms in prosthetic hands should have low mass and be able to

deliver pinch force with only small amount of input energy.



Method• Designed and tested pulley-cable finger and hydraulic cylinder finger.

– Compared pulley-cable transmission principle with hydraulic cylinder transmission principle.

• Both fingers had identical dimensions and low mass.

– Measured input energy for several tasks.

(a) (b)

Figure. (a) Pulley-cable finger.(b) Hydraulic cylinder finger.



Results

• Pulley-cable finger required more input energy than hydraulic cylinder finger to perform tasks, especially tasks requiring higher pinch forces.



Conclusion

• Hydraulic cylinder transmission is more efficient transmission for application in body-powered prosthetic fingers.

this article and any supplementary material should be cited as follows: smit g, plettenburg dh, van...

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