A novel peroral digital cholangioscope with a large accessory channel: An experimental study

Abstract

Endoscopic retrograde cholangiopancreatography (ERCP) is among the essential imaging modalities for diagnosis and treatment of biliary disorders. However, it is sometimes difficult to diagnose and treat patients using only indirect two-dimensional images obtained by fluoroscopic imaging. In such cases, a peroral cholangioscope (POCS) can be used to insert an endoscope into the bile duct for direct visualization. [1][2][3][4] Use of the POCS has been increasing due to improvements in functionality, image quality, and operability as well as the development of related devices. The POCS methodology is divided into two main types: one using the "mother-baby" peroral cholangioscope (MB-POCS), in which an ultra-thin scope with an outer diameter of 3.5-4.0 mm is inserted via the transpapillary route through the accessory channel of a sideviewing duodenoscope; 5-7 and the other using a peroral

Potential versatile uses of a novel ultra‐thin peroral cholangioscope

“…Peroral cholangioscopy (POCS) allows for direct visualization, diagnosis, and treatment of biliary tract lesions 1,2 . Recently, digital POCS with enhanced image quality has been developed and become widely used, 3,4 but sometimes there is a hesitancy to use this method due to cost considerations.…”

Novel peroral cholangioscopy‐guided electrohydraulic lithotripsy for difficult stones

“…[1][2][3] EyeMAX (Micro-Tech Co., Ltd.) is a newly developed cholangioscope with a larger working channel and higher mobility of the bending section than conventional scopes (Figure 1) (Table 1). 4,5 Here, we report a case with difficult stones who was successfully treated by EHL with eyeMAX guidance (Video S1).…”