Adjustable lower limb prosthesis having conical support

Details Adjustable lower limb prosthesis having conical support Adjustable lower limb prosthesis having conical support

1993-07-14

1995-04-11

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

Ankle

623 38, 623 53, 403 90, 403281, 403371, A61F 262, A61F 276

Patent

active

054054109

ABSTRACT:
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.

REFERENCES:
patent: 608812 (1898-08-01), Weller
patent: 3196463 (1965-07-01), Farneth
patent: 3400408 (1968-09-01), Garcia
patent: 3659294 (1972-05-01), Glabiszewski
patent: 3671978 (1972-06-01), May
patent: 3982278 (1976-09-01), May
patent: 5047063 (1991-09-01), Chen
patent: 5116384 (1992-05-01), Wilson et al.
patent: 5139524 (1992-08-01), Aulie et al.
Michael J. Quigley, Prosthetic Methods and Materials, Atlas of Limb Prosthetics, Surgical and Prosthetic Principles, American Academy of Orthopaedic Surgeons, The C.V. Mosby Company, 1981, Chapter 5, pp. 47-62.

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