Control of hemorrhage during the taking of a skin biopsy is often of paramount importance. A profuse blood flow not only obscures the field of vision, so it is difficult to tell if one is getting the exact specimen area that is desired, but it also interferes with subsequent electrodesiccation.
A metallic ring for securing hemostasis under these circumstances was suggested by Andrews1 and described in 1950 by Walsh.2 However, the metallic ring is objectionable if left in place during the desiccation, for there is danger of burning the patient and the operator. About four years ago, we began to experiment with a plastic ring for this same purpose. At first, we used a circular opening in a flat piece of plastic. While this was fairly good, it was not good enough for us to consider it worth while. Later we improved this by making a circular ridge surround the under side of the opening. Thus we produced in essence a plastic ring with a handle. We contacted one of the leading physicians' supply houses with the idea of having such an item manufactured and offered to the profession (without royalty) at a nominal cost.
OSBOURN RA. PLASTIC PRESSURE RING FOR HEMOSTASIS. AMA Arch Derm Syphilol. 1954;69(5):612–613. doi:10.1001/archderm.1954.01540170082011
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