While applying pressure to a giant spider nevus prior to treatment, I realized that if the glass slide had some perforations I could easily obliterate the "feeder" vessels which stood out so prominently. It was also apparent that if the perforations were irregularly distributed different vessels could be treated at the same time merely by shifting the slide without lifting it.
Two slides were made,1 one corresponding to the ordinary laboratory glass slide and the other to a short glass stirring rod with one end flattened and containing a single perforation. The latter was most useful in treating telangiectases on the nose and about the angle of the eye. Successful results were obtained by using electrodesiccation or electrocoagulation. For the larger veins on the nose, obliteration was more rapid when multiple punctures were made along the length of the vessels. The pressure of the slide eliminated bleeding and greatly
Guequierre JP. AN INSTRUMENTAL AID IN THE TREATMENT OF TELANGIECTASES. Arch Derm Syphilol. 1941;44(2):259–260. doi:10.1001/archderm.1941.01500020114015
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