Abstract
The rapid prototyping (RP) technology has advanced in various fields such as verification of design, and functional test. Recently, researchers have studied bio-materials to fabricate functional bio-RP parts. In this research, a nano composite deposition system (NCDS) was developed to fabricate three-dimensional functional parts for bio-applications. In the hybrid process, the material removal process by mechanical micro machining and/or the deposition process are combined. NCDS uses biocompatible or biodegradable polymer resin as matrix and various bioceramics to form bio-composite materials. To test drug release rate in vivo environment, two different types of drug delivery system (DDS) were fabricated using the bio-composite materials. 1) Container type DDS used poly(DL-lactide-co-glycolide acid)(50:50) and 5-fluorouracil as the drug composite while polycaprolactone(PCL) served as the container of the drug. 2) Scaffold type DDS formed porous microstructure with poly(DL-lactide-co-glycolide acid)(50:50) and 5-fluorouracil composite. The effect of geometry of the DDS on release rate of drug is under investigation.
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