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AN IMPROVED CHISEL
This instrument is a combination of a periosteal elevator and a chisel, joined at an angle of 65 degrees. By means of this chisel the periosteum is lifted and the bone cut in one operation. In addition to lifting the periosteum the elevator protects the skin from possible injury by the chisel. The part of the instrument which lifts the periosteum is of sufficient thickness to make it easily felt by the fingers through the overlying skin. The periosteal elevator thus serves as the guide for the direction of the chisel. The acute angle formed by the chisel and the elevator engages the bone and prevents the instrument from slipping in and out.The instrument is used as follows: A small incision is made in the vestibule cf the nose near the lower border of the apertura piriformis. The chisel is inserted through this incision, and the
PEARLMAN LM. IMPROVED INSTRUMENTS AND POSTOPERATIVE SPLINT FOR NASAL PLASTIC OPERATIONS: Combined Chisel and Periosteal Elevator; Postoperative Nasal Splint; Forceps for Cartilage Transplants. Arch Otolaryngol. 1940;32(2):338–340. doi:10.1001/archotol.1940.00660020341011
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