Fig. 3.

Cholecystostomy tube design. a Instructional figure for the graphic designer describing the course of the hollow tube coursing the liver parenchyma and the gap between gallbladder and liver eventually entering the gallbladder. b, c Lower part of the right hepatic segment during the design stage and final 3D-printed model. d, e Gallbladder as it fits with the liver during the design stage, and the final hollow 3D-printed model with a hole in its surface for the hollow tube representing cholecystostomy tube pathway