Transactions on Additive Manufacturing Meets Medicine
Vol 1 No 1 (2019): Trans. AMMM

Scaffolds, Implants and Drug Delivery Systems

Integration of subtractive 3D printing into micromolding of biodegradable implants for spinal cord treatment

Main Article Content

Jana Marina von Poblotzki (Technical University of Hamburg), Hoc Khiem Trieu (Technical University of Hamburg)


Spinal cord injury (SCI) is a life-changing event potentially leading to permanent paralysis. We developed a mechanical microconnector system (mMS) to promote regeneration after SCI. The new micromolding of the mMS starts with a premaster build from a subtractive 3D printing method called selective laser induced etching (SLE). We additionally could facilitate molding of the silicone master through a monolayer coating of Trichloro(1H, 1H, 2H, 2H-perfluorooctyl)silane (FOTS) and Dimethyldichlorosilane (DDMS). This technology enables us to build complex biodegradable implant structures in a range from 25 micrometers up to several millimeters.

Article Details