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  • Title: In vivo evaluation of a modified linear stapling device designed to facilitate accurate pathologic examination of the surgical margin.
    Author: Tsujimoto H, Tsuda H, Hiraki S, Nomura S, Ito N, Kanematsu K, Horiguchi H, Aosasa S, Yamamoto J, Hase K.
    Journal: Gastric Cancer; 2016 Apr; 19(2):666-669. PubMed ID: 26199024.
    Abstract:
    BACKGROUND: Microscopic involvement of the resection margin could influence the long-term outcome of patients undergoing curative surgery for gastric cancer. Linear staplers, commonly used for gastrectomies, are often equipped with three lines of staples on either side of the resection line. Although multiple lines of staples reinforce closure of the gastric or intestinal stump, they could hinder accurate histopathologic evaluation of the surgical margin of the resected specimen. METHODS: We modified a linear stapling device by removing one line (stapler E2) or two lines (stapler E1) of staples on the specimen side, and attempted to dissect a silicon film and then the stomach from a porcine model using the stapling device and examined the distances between the cutting edge and the nearest staple line. RESULTS: The distance between the cutting edge and the staple line for stapler E1 was significantly greater than the distance between the cutting edge and the nearest staple line for stapler E2 or the control device. Consequently, specimens of exemplary quality were available for pathologic examination of the surgical margin. Moreover, the lack of multiple layers of staples did not result in contamination of the abdominal cavity with gastric juice during laparoscopic procedures in the porcine model. CONCLUSIONS: Stapler E1 is safe and could be useful for the pathologic evaluation of the true surgical margin.
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