A novel single-stapling technique for colorectal anastomosis: a pre-ligation single-stapling technique (L-SST) in a porcine model

Hiroshi Takeyama, Hirofumi Yamamoto, Taishi Hata, Yusuke Takahashi, Masahisa Ohtsuka, Ryoji Nonaka, Akira Inoue, Atsushi Naito, Tae Matsumura, Mamoru Uemura, Junichi Nishimura, Ichiro Takemasa, Tsunekazu Mizushima, Yuichiro Doki, Masaki Mori

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Background: In low anterior resections, anastomosis continues to present major problems. Although the single-stapling technique (SST) is considered to be superior to the double-staple technique (DST) in terms of leakage and stenosis, SST requires suturing, which is particularly difficult during laparoscopic surgery. A simpler and safer method of anastomosis is needed. In this study, we developed a pre-ligation SST (L-SST) that does not require suturing and evaluated the usefulness of L-SST in an ex vivo and an in vivo porcine model. Methods: Porcine rectums were ligated using SurgiTie™ and sharply resected instead of using a linear stapler. The burst pressures of the closed rectums after using a linear stapler and SurgiTie™ (each group; n = 5) and the burst pressures of the anastomoses performed with L-SST and DST (each group; n = 4) were measured. During in vivo porcine laparoscopic surgery, we performed and evaluated the feasibility of L-SST. Results: After completing the anastomosis with L-SST, the ligated portion using SurgiTie™ was completely removed. The stump closed using SurgiTie™ was much stronger than that closed using a stapler (131.2 and 25.6 mmHg, respectively; P = 0.01). The average burst pressure of the anastomoses performed with L-SST was 33.8 mmHg, whereas that performed with DST was 30.5 mmHg. We did not find significant difference between these two groups (P = 0.88). We also confirmed the feasibility of L-SST in an in vivo porcine laparoscopic surgery model. Conclusion: We developed a novel SST, the L-SST. We were able to perform L-SST successfully using an ex vivo porcine rectum and during in vivo porcine laparoscopic surgery.

Original languageEnglish
Pages (from-to)2371-2376
Number of pages6
JournalSurgical endoscopy
Issue number8
Publication statusPublished - Aug 25 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery


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