Apparatus for making a prosthesis socket

Details Apparatus for making a prosthesis socket Apparatus for making a prosthesis socket

1995-11-15

1998-02-17

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Shaping means employing anatomical body or portion thereof

264573, 264DIG30, 623 33, 623901, 425389, A61F 260

Patent

active

057189250

ABSTRACT:
A definitive socket for residual limb prosthetic use is formed in a single molding step by compressive pressure casting or molding a pre-formed, moldable, hardenable socket material over a residual limb and curing the socket material to a load-bearing hardened condition while it is maintained under peripheral compressive pressure against the residual limb and while the residual limb is tensioned in a distal direction during the casting process. The combination of pressure casting the socket material and applying tension to the residual limb in a distal direction while the socket material is curing results in forming a definitive socket that fits well to the residual limb after curing without substantial rectification. Pressure relief formations, socket coverings, and a prosthesis coupler may be compression molded simultaneously with the socket. A pressure casting system for carrying out the casting of the socket includes a pressure chamber, a compressive pressure applying membrane, a tension reacting system for producing a resultant axial tension in the residual limb within the socket material during forming and hardening of the socket and optionally a load cell to monitor or indicate the tension force applied during molding. The socket material includes a pre-formed tubular sleeve-like reinforcement web of fibers pre-impregnated with an uncured preferably water activatable, moldable, hardenable resin material, with an integrated prosthesis coupler at one end.

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Ossur, hf. brochure for ICECAST Pressurized Casting Instrument, 9 pgs., (Aug. 1993).
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Ossur, h.f. undated brochure for Iceross Icelandic Roll on Silicone Socket (2 pgs.).

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