Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1989-07-06
1990-06-12
Isabella, David J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 00000
Patent
active
049329740
ABSTRACT:
Prosthetic device such as bone plates, stem-type prostheses such as femoral or humeral prostheses, or intramedullary rods are substantially improved by utilizing casting techniques that provide columnar or monocrystalline grain structure, with the <001> crystal direction oriented substantially parallel to the neutral axis, thereby increasing flexibility of the prosthesis and increasing loading on the bone, whereby disuse-atrophy is reduced and bone healing is facilitated; similarly, the crystal direction may be oriented to increase the stiffness of the prosthesis to resist tension.
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"Casting and Properties of Unidirectionally-Solidified Superalloys", by M. Gell, C. P. Sullivan and F. L. Versnyder-pp. 1-35.
"The Development of Single Crystal Superalloy Turbine Blades", By M. Gell, D. N. Duhl and A. F. Giamei-Superalloys 1980-pp. 205-214.
"Monocrystaloys--A New Concept in Gas Turbine Materials-The Properties and Characteristics of PWA 1409", by B. J. Piearcey and F. L. VerSnyder-Feb. 2, 1966-pp. 1-28.
Buechel Frederick F.
Pappas Michael J.
Casella Anthony J.
Hespos Gerald E.
Isabella David J.
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