Prosthetic pylon having a compressible medium to support a patie

Details Prosthetic pylon having a compressible medium to support a patie Prosthetic pylon having a compressible medium to support a patie

1997-09-29

2000-07-11

Willse, David H.

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

Leg

623 35, 248609, A61F 260, A61F 262

Patent

active

060866152

ABSTRACT:
A pylon includes a first end portion connected to a patient's leg stump and a second end portion connected to a prosthetic foot. The second end portion includes a piston, and the first end portion includes a piston chamber receiving the piston. The second end portion is thus rotatable and axially movable relative to the first end portion about and along a longitudinal axis of the pylon, respectively. The piston chamber encloses a compressible volume of fluid through which substantially all of the patient's weight applied through the patient's leg stump is supported. The compressible volume of fluid is sealed so that it can be pressurized. Also, a torsional spring couples the piston and piston chamber and resists relative rotation between the piston and piston chamber without supporting any substantial portion of the patient's weight applied through the patient's leg stump to the piston. The present invention thus advantageously provides a pylon which is more cushioned and resilient than conventional pylons.

REFERENCES:
patent: 1783801 (1930-12-01), Leipert
patent: 4038705 (1977-08-01), Owens et al.
patent: 5458656 (1995-10-01), Phillips
patent: 5702488 (1997-12-01), Wood et al.

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