We report two successful cases of colonic stenting using a newly developed self-expandable metallic stent (SEMS) with suture-based segmental-release deployment system (SR), the Bactrian SR colonic stent (SB-Kawasumi Laboratories Inc., Kanagawa, Japan). This novel uncovered SEMS is made from nickel-titanium features hook-and-cross braided design that provides low axial and sufficient radial forces [1]. The delivery system has a three-layer design comprising an outer sheath, suture-based deployment system, and inner catheter. This system has three independently deployable segments — oral, central, and anal — whose deployment order can be selected ([Fig. 1], [Video 1]). Compared with the conventional one-step outer sheath pulling-back deployment, the deployment order from oral/anal deployment at the center may be more effective for precise placement [2].

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

Bibliographical Record
Takashi Murakami, Tomonori Yamauchi, Eiji Kamba, Sho Takahashi, Yusuke Takasaki, Akihito Nagahara, Hiroyuki Isayama. Novel segmentally deployable self-expandable metallic stent in malignant colorectal obstruction. Endosc Int Open 2025; 13: a26950679.
DOI: 10.1055/a-2695-0679