Differential response of arteries and veins to bipolar vessel sealing: evaluation of a novel reusable device

Journal of Laparoendoscopic & Advanced Surgical Techniques. Part a
Sven RichterGeorg Pistorius

Abstract

A variety of energy-based techniques for arterial and venous vessel ligation have recently been introduced. Using a porcine model we studied the efficacy of the novel reusable BiClamp versus the standard disposable LigaSure bipolar vessel sealing device. We also compared whether arteries respond differently than veins upon sealing. In five Swabian Hall pigs, splenectomy and nephrectomy were performed using two different bipolar vessel sealing devices. Measurements of the sealed arteries and veins (diameter 2-7 mm) included rate of seal failure, burst strength, and heat-associated vascular wall morphologic appearance. An additional three animals underwent splenectomy, salpingo-oophorectomy, and small bowel resection, and vessel seals were studied histologically after a seven-day survival period for vessel wall fusion, inflammation, and fibrous organization. Sealing was highly successful, with only one seal failure overall and thus no difference between the two instruments analyzed. The burst pressures of BiClamp-sealed arteries (842 +/- 117 mm Hg) did not differ from that of arteries sealed with LigaSure (856 +/- 102 mm Hg), but were significantly higher than the burst pressures of veins (155 +/- 26 and 216 +/- 71 mm Hg, respect...Continue Reading

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