In a paper previously published,1 I described a cutting operatiion for the cure of strictures of the esophagus, performed through the esophagoscope.
Figure 1 shows an instrument which I have devised for the purpose of dilating the stricture through the esophagoscope, under the guidance of the eye, in the same sitting after the incisions have been made.
The circumference of the dilator when closed corresponds to 16 of the French scale, and its maximum expansion is 50 French, as indicated by the scale on the handle. A metal peg is inserted into holes on the scale-plate to limit the expansion to the extent desired. The dilator is used like a glovestretcher to dilate the stricture gently by alternately expanding and relaxing the instrument, and changing its position now and then by rotation. By this method the stricture can be dilated rapidly in one sitting without removing the esophagoseope.
LERCHE W. AN ESOPHAGEAL DILATOR AND AN ESOPHAGEAL SOUND. JAMA. 1911;LVII(5):383. doi:10.1001/jama.1911.04260070387008
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