Biomechanical characterization of a novel ring connector for sutureless aortic anastomosis

Huan Liu, Shijiang Zhang, Yongfeng Shao, Xiaohu Lu, Weidong Gu, Buqing Ni, Qun Gu, Junjie Du

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PDF(331 KB)
Journal of Biomedical Research ›› 2018, Vol. 32 ›› Issue (6) : 454-460. DOI: 10.7555/JBR.31.20170011
Original Article
Original Article

Biomechanical characterization of a novel ring connector for sutureless aortic anastomosis

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Abstract

The surgical treatment for aortic diseases remains a challenge for any cardiac surgeon. The use of sutureless ring connector in aortic anastomosis can simplify the procedure and shorten anastomosis time. Therefore, we developed a novel device for sutureless aortic anastomosis. A series of experiments were carried out for tensile and leakproof-capacity assessments to verify the feasibility of the ring connector by using fresh swine aorta samples. In in vivo test, the ring connector was implanted in 6 swine with follow-up of 6 months. Radiographic and pathological studies of the aorta were performed. In the tensile tests, the strength was 32.7±5.9 Newton (N) in the sutureless anastomosis group, compared with 73.3±12.5 N in the control group by traditional manual suture. In the leakproof-capacity assessment, no sign of either leakage or bursting was evident at 280 mmHg of internal pressure in the aorta samples. In in vivo tests, it took 9.47±0.3 minutes for the sutureless anastomosis, compared with 15.58±1.39 minutes for hand-sewn suturing. Insertion was easy and rapid. Radiographic and pathological studies were performed at first month, third month and sixth month after surgery, each time obtained from the two swine, showed patency of the anastomosis and no signs of stenosis, blood leakage, migration or pseudoaneurysm formation, except one paralyzed swine developed of thrombo-occlusion at the site of the sutureless anastomosis. The result indicates that this novel ring connector offers considerable promise for sutureless aortic anastomosis.

Keywords

aortic diseases / sutureless device / aortic anastomosis / swine

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Huan Liu, Shijiang Zhang, Yongfeng Shao, Xiaohu Lu, Weidong Gu, Buqing Ni, Qun Gu, Junjie Du. Biomechanical characterization of a novel ring connector for sutureless aortic anastomosis. Journal of Biomedical Research, 2018, 32(6): 454‒460 https://doi.org/10.7555/JBR.31.20170011

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Acknowledgments

This study was supported by internal funding from the Department of Cardiovascular Surgery.

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2017 2017 by the Journal of Biomedical Research.
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