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Method for Fabricating Soft Tissue Implants with Microscopic Surface RoughnessA method for fabricating soft tissue implants using a mold. The cavity surface of an initially untextured mold. made of an organic material such as epoxy. is given a thin film coating of material that has pinholes and is resistant to atomic particle bombardment. The mold cavity surface is then subjected to atomic particle bombardment, such as when placed in an isotropic atomic oxygen environment. Microscopic depressions in the mold cavity surface are created at the pinhole sites on the thin film coating. The thin film coating is removed and the mold is then used to cast the soft tissue implant. The thin film coating having pinholes may be created by chilling the mold below the dew point such that water vapor condenses upon it; distributing particles, that can partially dissolve and become attached to the mold cavity surface, onto the mold cavity surface; removing the layer of condensate, such as by evaporation; applying the thin film coating over the entire mold surface; and, finally removing the particles, such as by dissolving or brushing it off. Pinholes are created in the thin film coating at the sites previously occupied by the particles.
Document ID
20000030739
Document Type
Other - Patent
Authors
Banks, Bruce A. (NASA Lewis Research Center Cleveland, OH United States)
Rutledge, Sharon K. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
October 12, 1999
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-5,965,076|NASA-Case-LEW-15805-1
Patent Application
US-Patent-Appl-SN-936492

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