Endoscopy 2018; 50(08): E222-E223
DOI: 10.1055/a-0624-2016
E-Videos
© Georg Thieme Verlag KG Stuttgart · New York

New modified hook device for endoloop closure of the mucosal defect after gastric endoscopic submucosal dissection

Tatsuma Nomura
1  Department of Gastroenterology, Kinan Hospital, Minamimuro, Mie, Japan
2  Department of Gastroenterology, Ise Red Cross Hospital, Ise, Japan
,
Akira Kamei
2  Department of Gastroenterology, Ise Red Cross Hospital, Ise, Japan
,
Shinya Sugimoto
2  Department of Gastroenterology, Ise Red Cross Hospital, Ise, Japan
,
Takaaki Morikawa
1  Department of Gastroenterology, Kinan Hospital, Minamimuro, Mie, Japan
,
Jun Oyamda
2  Department of Gastroenterology, Ise Red Cross Hospital, Ise, Japan
› Author Affiliations
Further Information

Corresponding author

Tatsuma Nomura, MD
Department of Gastroenterology
Kinan Hospital
4750 Atawa, Mihama-cho, Minamimuro-gun
Mie 519-5293
Japan   
Fax: +815-9792-3357   

Publication History

Publication Date:
12 June 2018 (online)

 

Closing the submucosal defect after gastric endoscopic submucosal dissection (ESD) may reduce postoperative adverse events [1]. In recent years, various methods for mucosal closure after gastric ESD have been developed [2] [3]. However, gastric mucosal defect closure is difficult as the submucosa and muscularis are thicker than in other parts of the digestive tract. Recently, mucosal defect closure using an endoloop was reported [4]. However, it is not common in Japan, and it is difficult to grasp and tighten the length of the endoloop because it is not fixed. Therefore, we developed a new and modified hook device for endoloop closure to grasp the endoloop tail.

The modified hook device is created from the hook device of the endoloop (HX-400U-30; Olympus, Tokyo, Japan). First, the hook part of the hook device is cut. The wire is then bent bluntly into a “J” shape. This new modified hook device makes it easier to grasp the endoloop tail. [Video 1] shows how to make the new modified hook device, followed by its use for closure of an actual mucosal defect after ESD.

Video 1 Video showing how to make the new modified hook device and its use to close an actual submucosal defect after endoscopic submucosal dissection.


Quality:

One of our patients had an early gastric cancer of 50 mm in diameter. ESD was performed to resect the lesion. We initially used the clip-on-clip closure method [5] to reduce the mucosal defect area after ESD but could not achieve complete closure. Therefore, we tried closing the mucosal defect using the new modified hook device for endoloop closure. First, the endoloop was fixed with clips around the mucosal defect. Thereafter, the endoloop tail was grasped with the new modified hook device, and the mucosal defect was then closed. In this patient, the mucosal defect was large; however, complete closure of the mucosal defect after ESD using two endoloops was possible ([Fig. 1]). The patient was discharged without any postoperative adverse events.

Zoom Image
Fig. 1 Endoscopic views showing: a the mucosal defect after endoscopic submucosal dissection (ESD) of an early gastric cancer (50 mm in diameter); b closure with the clip-on-clip closure method using a normal clip on the mucosal defect; c the endoloop tail being grasped using the new modified hook device; d the post-ESD mucosal defect after its successful closure with two endoloops.

This new modified hook device makes it possible to grasp the endoloop tail more safely and easily.

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Competing interests

None


Corresponding author

Tatsuma Nomura, MD
Department of Gastroenterology
Kinan Hospital
4750 Atawa, Mihama-cho, Minamimuro-gun
Mie 519-5293
Japan   
Fax: +815-9792-3357   


Zoom Image
Fig. 1 Endoscopic views showing: a the mucosal defect after endoscopic submucosal dissection (ESD) of an early gastric cancer (50 mm in diameter); b closure with the clip-on-clip closure method using a normal clip on the mucosal defect; c the endoloop tail being grasped using the new modified hook device; d the post-ESD mucosal defect after its successful closure with two endoloops.