Surgi-OR Shamburg Comedone Extractor, Sklar. Extra Fine, Stainless Steel. The Surgi-OR Schamberg Comedone Extractor is a double-ended dermal instrument used to treat facial blemishes. When placed around the blemish, gentle pressure is applied and the instrument assists in forcing the underlying debris out from beneath the skin. The Schamberg Comedone Extractor is available in three varieties, tailored to treat various size blemishes. Surgi-OR mid-grade instruments provide cost-effective, reliable instrumentation for the operating room and surgical centers. This product features one fenestrated, rounded, rectangular tip, and one small, fenestrated, circular tip. The edges are extra-fine.