A novel second-generation multibending backward-oblique viewing duodenoscope in ERCP

Abstract

Introduction: Successful access to the papilla and cannulation of the desired duct can be technically challenging. A novel second-generation multi-bending backward-oblique viewing duodenoscope (2nd M-D scope) was developed to overcome this difficulty. The aim of the present study was to evaluate the utility of 2nd M-D scope during biliary ERCP. Material and methods: This was a retrospective review of 53 patients with native papilla who underwent biliary ERCP with the 2nd M-D scope. Results: Biliary cannulation and interventional procedures were successfully completed in all patients. In two of these patients, ERCP was initially attempted with a conventional single bending duodenoscope, but biliary cannulation was unsuccessful; one had Billroth-I gastrectomy, and the other had a Type III choledochal cyst. However, with the 2nd M-D scope, biliary cannulation and interventional procedures were successfully achieved. Finally, in nine patients, upward or downward angulation of the proximal bending portion in addition to the distal bending portion was used during ERCP, and the operator’s comments demonstrated that it was helpful for obtaining an appropriate en face view to look up to the papilla and facilitate successful biliary cannulation. Conclusion: The newly developed 2nd M-D scope could safely facilitate biliary cannulation in selected patients during ERCP.

Key words:

• Endoscopic retrograde cholangiopancreatography
• multi-bending backward-oblique viewing duodenoscope
• biliary cannulation
• en face view of the papilla

Acknowledgment

Ethics: This study was approved with the Ethical Committee of our institution on 3th February 2014, and registration number is 25-296, 7431.

Declaration of interest: The authors have no conflict of interest and no financial or personal relationships that could influence or be perceived to influence the work presented in this article.