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

Imaging and Modelling in 3D Printing

Rapid prototyping of an elastic bladder model for in-vitro simulation of the transurethral resection of the prostate

Main Article Content

Christian Damiani (Technische Hochschule Lübeck), Torben Dorbandt (Technische Hochschule Lübeck), Stephan Klein (Technische Hochschule Lübeck), Christoph Knopf (Olympus Winter & Ibe GmbH)


This work presents a fabrication method for an elastic urinary bladder model with near-physiological mechanical and thermal properties using Rapid Prototyping. The model is part of an experimental setup for in-vitro simulation of the Transurethral Resection of the Prostate (TURP). Tensile tests of commercial silicone elastomers, together with FEM simulations were used to find a suitable material for the Bladder-model. A mold was then fabricated by selective laser sintering and the model was manually casted. The mechanical compliance of the finished model shows a reasonable agreement with the predicted behavior, with a max. discrepancy of 15% at 40 mbar.

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