The cantor sigmoidoscope

Summary

A new type of sigmoidoscope and new techniques of sigmoidoscopy are described. The sigmoidoscope embodies a telescope-irrigator assembly, and is so devised as to permit either proximal illumination and nontelescopic vision, or distal illumination and telescopic vision. This instrument may thus be passed with or without fluid obturation, and permits examination to a higher level than is possible with ordinary dry sigmoidoscopy.