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A novel one-shot circular stapler closure for atrial septal defect in a beating-heart porcine model
Tatsuya Tarui1, Shigeyuki Tomita1, Norihiko Ishikawa1
1Department of General and Cardiothoracic Surgery, Kanazawa University School of Medicine, Kanazawa, Japan.
Purpose:
In surgical atrial septal defect (ASD) closure, there are no techniques or devices that can close the ASD accurately in a short time under a beating heart. We have developed a simple and automatic ASD closure technique using a circular stapler. This study assessed the feasibility and efficacy of a new circular stapler closure for ASD.
Description:
Under a continuous beating heart, hand-sewn patch plasty ASD closure was performed in 6 pigs (group A) and circular stapler ASD closure was performed in 6 pigs (group B). The time to close the ASD and the effectiveness of the closure were compared.
Evaluation:
Closure was significantly faster in group B (10.5 ± 1.0 seconds) than in group A (664 ± 10 seconds; p < 0.05). There was no leakage at the closure site, and sufficient tolerance was confirmed.
Conclusions:
A circular stapler can be used to treat ASD faster than hand-sewn patch plasty, with sufficient pressure tolerance in a beating heart porcine model.
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