Two multiarticulated hydraulic hand prostheses.
OBJECTIVE
Consumers want new prosthetic hand designs that have increased functionality, better cosmetic appearance, and lower weight.


METHODS
New lightweight hands that fulfill these demands can be designed by integrating a hydraulic system with small fluidic actuators at the digit joints.


RESULTS
Two different designs of lightweight experimental prosthetic hand are presented. The weight of the first hand is reduced by 50% compared to a conventional prosthetic hand, whereas the functionality of the second hand is increased by additional prehension types. Optionally, a tactile feedback system can be integrated. Due to multiple articulated digits and flexible materials, both hands are able to conform to the shape of an object held. This significantly reduces the necessary grip force and results in stable holding of an object. For a natural appearance, the hands are covered with a cosmetic silicone rubber glove.
Pylatiuk
Christian
C
Institute for Applied Computer Sciences (IAI), Forschungszentrum Karlsruhe, Karlsruhe, Germany. pylatiuk@iai.fzk.de
Schulz
Stefan
S
Kargov
Artem
A
Bretthauer
Georg
G
D001186:Artificial Limbs; D001696:Biomechanical Phenomena; D017076:Computer-Aided Design; D004582:Electronics, Medical; D004954:Esthetics; D005246:Feedback; D006225:Hand; D018737:Hand Strength; D006801:Humans; D011474:Prosthesis Design; D012826:Silicone Elastomers; D014110:Touch
D012826:Silicone Elastomers