TECHNICAL TIPS FOR GASTROINTESTINAL ENDOSCOPIC SUBMUCOSAL DISSECTION USING HOOKKNIFEJ

Abstract

Developed by Oyamaʼs in 2003, the HookKnife is a surgical device used during ESD. The HookKnife is useful in various gastrointestinal organs, such as the pharynx, esophagus, stomach, duodenum, and intestine. Besides the hook component of the knife, which allows for precision, the arm component is also useful as it allows comfortable and high-speed operation. It also allows us to use the vertical approach in the management of ulcer scars, where other devices were not adequate. Furthermore, the HookKnife was improved in 2005 with an added water supply function and was renamed the HookKnifeJ; this upgrade made the device even more useful. It is necessary to regularly practice these techniques, to improve oneʼs skills and be able to utilize the HookKnife without fail as the main device during ESD since it has proven to be very effective, especially in difficult cases.