Abstract 19719: Super Flexible Heart Replica With Vacuum Casting Technique Reproduces Real Structure and Texture of the Heart Fascinating Simulation Surgery in Complicted Congenital Heart Disease
Introduction: Precise understanding of 3D anatomy is crucial for successful surgical operation in complicated congenital heart disease (CHD). We have developed a new technology that reproduces accurate and extremely flexible polyurethane biomodels of complicated CHD suitable for simulation surgery and medical education.
Hypothesis: A novel 3D printing technique employing with stereolithography followed by vacuum casting is suitable for simulation surgery in complicated CHD.
Methods: Thirty five replicas of CHD were produced with this technique; diagnosis included tetralogy of Fallot, pulmonary atresia with ventricular septal defect, double outlet right ventricle, persistent truncus arteriosus, hypoplastic left heart syndrome, interrupted aortic arch, congenitally corrected transposition of the great arteries, and so on. Three-dimensional volumetric datasets of MSCT angiography of CHD were converted into standard triangulated language files to make plastic stereolithographic biomodels representing outer and inner surface of the heart. Then, another outer mold was made with urethane using the outer surface biomodels as a cast. Then, rubbery polyurethane was injected between the outer and inner molds under the vacuum condition. After solidification, the molds were carefully removed and the final biomodels were obtained.
Results: Wide variety of accurate and flexible biomodels of complicated CHDs from neonates to adults were reproduced. This technology allowed surgeons to precisely understand the internal chambers of the heart and allowed them to perform simulation surgery by way of cutting and suturing like a real heart tissue.
Conclusions: These super flexible and accurate polyurethane biomodels were instructive for surgeons to understand the complex structures and hemodynamics of the disease and also helpful for planning the individual surgical operation of complicated CHD.
Author Disclosures: I. Shiraishi: None. K. Kurosaki: None. S. Kanzaki: None. K. Hatanaka: None. H. Ichikawa: None.
- © 2015 by American Heart Association, Inc.