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One of the chief requirements in the use of radium for carcinoma of the esophagus is a suitable method of application. The instrument illustrated (fig. 1) has been designed to simplify the technic of application, and to prevent discomfort to the patient while being treated. It consists of a radium capsule large enough to hold five 10 mg. radium needles. This is attached to a tapered spiral spring tipped with a perforated metal olive. At the upper end is a flexible piano wire. The threads are the same as in the bulbs of the Sippy esophageal dilator, and olives may be attached at any of the three points shown in the illustration, if desired, thus all or part of the instrument being used, as required. The groove at the base of the spiral is to aid in fastening a rubber filter over the capsule. A fountain pen bladder makes an
Fitzgibbon JH. A RADIUM APPLICATOR FOR USE IN THE ESOPHAGUS. JAMA. 1926;86(9):622. doi:10.1001/jama.1926.26720350002010a