The US researchers have developed an innovative method for using affordable consumer-grade 3D printers and materials to fabricate custom medical implants that can contain antibacterial and chemotherapeutic compounds for targeted drug delivery. The team has created filament extruders that can make medical-quality 3D printing filaments that have specialised properties for drug delivery. Creating these filaments is a new concept that can result in smart drug delivering medical implants or catheters. (Read: Now a nano pill for better drug delivery). 'After identifying the usefulness of the 3D printers we realised there was an opportunity for rapid prototyping using this fabrication method'