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Article
December 3, 1910

THE COLONOSCOPE

JAMA. 1910;55(23):1956. doi:10.1001/jama.1910.04330230014004

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Abstract

I have devised an instrument for the inspection of the sigmoid flexure which possesses a number of advantages over other instruments intended for the same purpose. The following description will prove this contention:

Figure 1 represents the sheath with obdurator. A is the sheath of ⅝ inch diameter and 12 inch working length. B is the obdurator, C the lamp. The wiring for the lamp is armored in the wall of the tube. The conduit projects neither on the inside nor on the outside of the sheath. The lamp itself is loaded in a capsule with a water-tight screwtop and a glass window. The capsule projects somewhat beyond the distal opening of the sheath, and is of material assistance in pushing aside rectal folds in the vicinity of the mouth of the sigmoid flexure, and may be utilized as a guide. The light arrangement is a novelty in all rectal

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