Transactions on Additive Manufacturing Meets Medicine
Vol 1 No 1 (2019): Trans. AMMM
https://doi.org/10.18416/AMMM.2019.1909S03P05

Imaging and Modelling in 3D Printing

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

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

Abstract

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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