The Ohio Willow Wood Company

Joseph Arbogast

Robert E Arbogast

James M Colvin

Eric K Bartkus

An adjustable lower limb prosthesis has a pylon connected to both a prosthetic foot and to the stump adapter by way of a foot/pylon joint and a pylon/stump joint, respectively. Each of the joints is similar and includes a tapered socket holding a truncated conical wedge sleeve. The wedge sleeve has a bore which may be angled with respect to the cone axis, and into which the pylon is fitted. A cap locks the wedge sleeve in the bore and locks the pylon in the wedge sleeve. For adjusting the prosthesis, a set of wedge sleeves are available to the prosthetist, each having a bore with a different offset with respect to the conical axis of the sleeve. The prosthetist selects the appropriate sleeve based upon a prior determination using a temporary pylon and an alignment adapter. The correct foot wedge sleeve and circumferential alignment of the wedge sleeve are set with the aid of discs having offset holes.

Adjustable lower limb prosthesis having conical support

A lower limb prosthesis as a prosthetic foot and an elongate rod formed substantially of unidirectional long fibers embedded in a thermoplastic matrix, the fibers extending substantially parallel to the length of the rod. An adjustment apparatus for the prosthesis includes a pair of pods which may be clamped to the rod and rotated at controlled angles once the thermoplastic rod has been heated to its deformation temperature.

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Mount Sterling, OH, United States of America

Joseph Arbogast