Flexible traction method for endoscopic resection by using an endoscopic hand suturing technique
07 November 2018 (eFirst)
In endoscopic resection, for example endoscopic submucosal dissection (ESD), optimal traction of the target lesion facilitates the subsequent procedure . We devised a new traction method by using an endoscopic hand suturing (EHS) technique , in which a lesion is suspended by attaching it to the contralateral side using a barbed suture, and maintaining the traction force by inflating the tract or by pulling the needle side of the suture thread.
First, we demonstrated that this traction method was feasible in an ex vivo ESD case. After creating a submucosal fluid cushion and connecting the proximal mucosa of the lesion to the contralateral side of the wall with a barbed suture by EHS, a circumferential mucosal incision was performed. Subsequently, submucosal dissection was started by lifting up the lesion with insufflation ([Fig. 1 a], [Video 1]). When the suture loosened as the submucosal dissection proceeded, the needle side of the suture thread was pulled using the flexible needle holder in order to maintain optimal traction ([Fig. 1 b, c]). Finally, the lesion was easily and quickly resected, and was removed by cutting the lesion side of the suture thread. The needle and suture thread were retrieved by grasping the thread close to the needle tail with the needle holder.
Video 1 Flexible traction method in ex vivo and clinical cases. A new traction method that uses an endoscopic hand suturing technique is useful for endoscopic resection of gastrointestinal tumors by providing a continuous traction force to the target lesion. By adjusting the length of the suture that suspends the lesion, optimal traction is maintained.
Next, we applied this technique clinically to nonexposed endoscopic wall inversion surgery (a nonexposure technique of laparoscopic and endoscopic cooperative surgery) . A 2 cm submucosal tumor located on the posterior wall was successfully suspended by connecting the mucosal part of the lesion to the anterior wall using a barbed suture ([Fig. 2 a]). Although the traction force decreased as the resection proceeded, the lesion was tightly held in suspension by pulling the needle side of the suture thread ([Fig. 2 b]), which resulted in a successful resection ([Fig. 2 c]).
This traction method may be useful for various endoluminal surgeries.
Endoscopy E-Videos is a free access online section, reporting on interesting cases and new techniques in gastroenterological endoscopy. All papers include a high quality video and all contributions are freely accessible online.
This section has its own submission website at https://mc.manuscriptcentral.com/e-videos
- 1 Oyama T. Counter traction makes endoscopic submucosal dissection easier. Clin Endosc 2012; 45: 375-378
- 2 Goto O, Sasaki M, Akimoto T. et al. Endoscopic hand-suturing for defect closure after gastric endoscopic submucosal dissection: a pilot study in animals and in humans. Endoscopy 2017; 49: 792-797
- 3 Goto O, Takeuchi H, Sasaki M. et al. Laparoscopy-assisted endoscopic full-thickness resection of gastric subepithelial tumors using a nonexposure technique. Endoscopy 2016; 48: 1010-1015