Tissue regeneration matrices by solid free-form fabrication techniques
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United States of America Patent
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Mar 11, 2003
Grant Date -
N/A
app pub date -
Jun 5, 1995
filing date -
Oct 18, 1993
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Abstract
Solid free-form (SSF) techniques for making medical devices for implantation and growth of cells from polymers or polymer/inorganic composites using computer aided design are described. Examples of SFF methods include stereo-lithography (SLA), selective laser sintering (SLS), ballistic particle manufacturing (BPM), fusion deposition modeling (FDM), and three dimensional printing (3DP). The devices can incorporate inorganic particles to improve the strength of the walls forming the pores within the matrix and to provide a source of mineral for the regenerating tissue. The devices can contain tissue adhesion peptides, or can be coated with materials which reduce tissue adhesion. The macrostructure and porosity of the device can be manipulated by controlling printing parameters. Most importantly, these features can be designed and tailored using computer assisted design (CAD) for individual patients to optimize therapy.
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