Tip of ultrasonic endoscope

摘要

A radially scanning, annular ultrasonic oscillator array is provided in a tip body of an endoscope so as to be arranged about the longitudinal axis of the tip body. A first treatment tool projection port is provided in the tip body and opens at a location longitudinally forward from a location where the annular ultrasonic oscillator array is provided. A second treatment tool projection port is provided to the tip body and opens at a location longitudinally rearward from the location where the annular ultrasonic oscillator array is provided.