Insertion assisting tool for endoscope

摘要

Operability of an insertion part of an endoscope when the insertion part is inserted into a body cavity is improved. A sidewall opening part (68) through which an insertion part (12) of an endoscope (10) can be fed is provided in a sidewall part of a tubular body through which the insertion part (12) is inserted. A distal end edge part of the sidewall opening part (68) constitutes a portion for receiving and supporting the insertion part (12) when a distal end of the insertion part (12) is fed from the sidewall opening part (68) to be guided into a biliary tract or a pancreatic duct. A supply port (70) is provided at the distal end edge part of the sidewall opening part (68) and lubricating liquid is supplied to the supply port (70) from a lubricating liquid supply passage communicating with the supply port (70). Thereby, frictional resistance occurring between the insertion part (12) and the distal end edge part of the sidewall opening part (68) can be reduced so that operability of the insertion part (12) can be improved.