Observation port washing apparatus used in endoscope for medical treatment operation, has fluid supply chamber formed in tip hard portion, and set as constriction between connection of air supply route and solution sending route

摘要

A fluid supply chamber is formed in the tip hard portion (2c), and is set as the constriction between connection of air supply route (15) and solution sending route (17). The diameter size of restriction route (22b) is smaller compared to diameter size of connection pipe (24,25).