Utilizing patient-specific 3D printed guides for graft reconstruction in thoracoabdominal aortic repair

Author:

Kim Taehun,Hong Dayeong,Ock Junhyeok,Park Sung Jun,Rhee Younju,Lee Sangwook,Kim Guk Bae,Yang Dong Hyun,Kim Joon Bum,Kim Namkug

Abstract

AbstractIn thoracoabdominal aortic aneurysm repair, repairing the visceral and segmental arteries is challenging. Although there is a pre-hand-sewn and multi-branched graft based on the conventional image-based technique, it has shortcomings in precisely positioning and directing the visceral and segmental arteries. Here, we introduce two new reconstruction techniques using patient-specific 3D-printed graft reconstruction guides: (1) model-based technique that presents the projected aortic graft, visualizing the main aortic body and its major branches and (2) guide-based technique in which the branching vessels in the visualization model are replaced by marking points identifiable by tactile sense. We demonstrate the effectiveness by evaluating conventional and new techniques based on accuracy, marking time requirement, reproducibility, and results of survey to surgeons on the perceived efficiency and efficacy. The graft reconstruction guides cover the segmentation, design, fabrication, post-processing, and clinical application of open surgical repair of thoracoabdominal aneurysm, and proved to be efficient for accurately reconstructing customized grafts.

Funder

Korea Health Technology R&D Project

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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