Rapid manufacturing of bioceramic implants by direct writing.

Date
2008-09-18
Authors
Tallis, Andrea
Jones, Jason B.
Wimpenny, D. I. (David I.)
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DOI
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Peer reviewed
Yes
Abstract
Abstract: A new process for the manufacture of customised implants for replacing damaged or diseased bone is being developed at DMU under a UK Government funded project – TSB Direct Writing of Bioceramic Implants. The new process is based on the extrusion of a fine bead of colloidal slurry which is then rapidly cooled to below -40oC to initiate an irreversible freeze casting reaction. When the slurry is returned to room temperature it remains a brittle solid which can be fired at elevated temperatures to generate the required mechanical properties. By sequentially depositing layers of material it is possible to generate a complex 3D object which has an internal lattice structure which enables rapid integration of the implant with the surrounding natural bone to produce a secure, long lasting repair. In this paper the results extrusion and freeze casting trials will be presented and discussed.
Description
Keywords
rapid manufacturing, customised products, custom-fit, mass customisation, bioceramics, direct writing, additive manufacturing
Citation
Tallis, A. Jones, J. and Wimpenny, D. (2008) Rapid manufacturing of bioceramic implants by direct writing. The 2nd International Conference on Additive Technologies, Ptuj, Slovenia.
Research Institute