Hemorrhage during and after a punch biopsy of the skin is often profuse and may interfere both with the removal of the specimen and with subsequent desiccation. The idea of a pressure ring for controlling bleeding was first suggested by a drawing of such an instrument in Andrews' "Diseases of the Skin,"1 but none was available. A homemade wire ring proved to be so useful that the instrument shown here was designed and has been prepared by one of the instrument houses (figure).
The ring is made of stainless steel with a smooth curved surface for pressure on the skin. The bar attaching the ring to the handle is placed at a 45 degree angle so that pressure can be easily applied and so that use in the mouth or in a depressed area such as that about the inner canthus of the eye may be facilitated. The
WALSH EN. PRESSURE RING FOR HEMOSTASIS. AMA Arch Derm Syphilol. 1950;62(5):718–719. doi:10.1001/archderm.1950.01530180107032
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