Simulation operation in the 3D printed ASD models
Five 3D printed ASD models were selected for the simulation exercises,
of which four models were one-hole ASD, one was double-hole ASD. The
occlusion device utilized in this study was ASO, which is a
self-expandable, double-disc, occlusion device made of nitinol mesh,
approved by the US Food and Drug Administration in 2001 for percutaneous
closure of secundum ASD14. Based on the soft
ASD 3D models, the desired occluder was determined, the appropriate
occluder applied in vitro trial occlusion was defined as the smallest
one that occluded the ASD completely,kept stable and not oppressed in
push–pull test. Obtain the patients’ occluder size actually applied
during the ASD occlusion by querying the clinical medical record system
retrospectively. Evaluate the effect of simulation operations and assess
whether the size of the optimized occluder required in the simulation
exercise is consistent with the one actually applied during the ASD
occlusion.