(Table 5)
In one case, the ASO was implanted successfully in the second try
because of its large round shape. The maximal diameter, the minimum
diameter and circumference measured from the 3D printed ASD model was
22.62mm, 20.67mm, 71.19mm, respectively. The circular index defined as
the ratio of its maximal to minimal diameters was 1.1(<1.4).
According to the principle of conventional clinical selection of the ASD
device size, a 28mm ASO was delivered into the ASD model, however the
occluder is so small that result in residual leak. As a result, a 32mm
ASO was selected in the second attempt, the model-matched occluder was
placed in 3D printed ASD model successfully with the waist of occluder
slightly compressed and the double-discs paralleled with the ASD plane