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The cardiospasm dilator described here was developed to meet certain exigencies in the treatment of cardiospasm cases. It was made by using an ordinary stomach tube of small diameter and attaching to its end the tapering tip of a small bougie. A rubber balloon was then fastened about the tube and bougie end, as shown. About this was placed a bag made of very light weight silk, and so cut that when the first or inner balloon was inflated, there would appear a constriction about the middle. A second balloon was fastened over this. Air-tight fastening of the ends of the balloons was made with rubber cement and winding with small silk thread. This constitutes the dilator proper. Another small balloon may be added inside the first large balloon at its proximal end (Figs. 1 and 2B). This balloon is also covered by a silk bag which limits its
Larimore JW. A CARDIOSPASM DILATOR. JAMA. 1917;LXIX(25):2105. doi:10.1001/jama.1917.25910520004011d