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submucosal dissection (ESD) a difficult procedure is the risk associated with cutting along the line of the submucosal layer blind: the cut edge of the lesion curls inwards and obscures the endoscopist’s view. Several methods have been devised to facilitate visibility [1–3], however, no devices have yet been developed that meet the demands of convenience, cost, sterility, and safety. Furthermore, most devices lift up only one part of a lesion, which means that resection can only be carried out from one side; their use is also limited depending on the tumor’s location [4]. We have designed a new traction device which employs a bilateral approach (“medical ring”; Okamoto Co. Ltd, Tokyo, Japan) (●" Fig. 1). The device comprises an inert elastic band, which is made of the same material as used in several medical devices including the endoscopic variceal ligation O-ring. The device is mounted by connecting it with 3-0 silk to a hemoclip (HX 610-090; Olympus Optical Co. Ltd, Tokyo, Japan) (●" Fig. 2). It is stored in a sheath, which opens and elongates when wet. The device can be passed through the instrument channel of a standard endoscope. The ESD procedure using the device is illustrated in●" Fig. 3 A new traction device for facilitating endoscopic submucosal dissection (ESD) for early gastric cancer: the “medical ring”