Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Socket holder
Patent
1990-12-04
1994-12-27
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Socket holder
623 31, 623 32, 623 38, A61F 260, A61F 278, A61F 268, A61F 280
Patent
active
053761294
ABSTRACT:
A method and apparatus for making prosthetic socket preforms, a method for making prosthetic sockets, and a socket attachment component are disclosed. The method of making preforms of the present invention involves the blowmolding of memory plastics with a cooling step prior to parison expansion to enhance the molded-in stresses of the resulting preform. The blowmolding apparatus of the present invention comprises two mold halves having specially designed knifing sections and a modified blow pin. The method for making prosthetic sockets involves heat- and vacuum-forming memory plastic preforms over a positive cast of a residual limb after preheating of the cast to prevent heat-sinking. The socket attachment component disclosed is adapted for molding with a prosthetic socket during heat- and vacuum-forming, is configured to receive a sleeve attachment shaft, and possesses an integral male member for attaching the component and socket to an artificial limb shaft using bolts or screws.
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Coombes et al., "Memory Plastics for Prosthetic and Orthotic Applications," Prosthetics and Orthotics International, 12:143-151, Dec. 1988.
Greenwood et al., "Application of Memory Plastics to the Production of Prostheses," Report 1986 Bio-Engineering Center Roe Hampton University College, London, 47-51, 1986.
Staros et al., "Veterans Administration Prosthetics Center Research Report," Bulletin of Prosthetics Research, 232-242, Spring 1970.
Walsh et al., "A Computerized System to Manufacture Prostheses for Amputees in developing Countries," Journal of Prosthetics and Orthotics, vol. 1, 3:165-181, Apr. 1989.
Wilson et al., "A Material for Direct Forming of Prosthetic Sockets," Artificial Limbs, vol. 14, 1:53-56, Spring 1970.
Faulkner Virgil W.
Walsh Nicolas E.
Board of Regents , The University of Texas System
Green Randall L.
Nguyen Dinh X.
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