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Transtibial Prosthesis With Passive Variable Ankle Stiffness

Detailed Technology Description

Universityof Delaware researchers Nenno and Wetzel have invented the dynamic rate-dependent, elastically-deformabledevice which can be stretched and recovered at low elongation rates. This deviceconsists of one or morefilaments and a fluid that substantially fills the remaining volume inside theelastically-deformable confinement member.This dynamicligament of Nenno and Wetzel is combined with an existing or modifiedtranstibial prosthesis. Thus the technology here is a prosthesis that providesvariable ankle stiffness to the wearer via a shear thickening fluidligament/tendon. This device will be the only rate-responsive prosthesis in themarket that will allow for variable ankle stiffness without an external powersource and thus would better emulate non-physiological gait than existingprosthesis.

Countries

United States

Application No.

Patent Pending

Country/Region

USA

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