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Surgical trephines designed to percutaneously cut and remove (i.e., harvest) cylindrical sections of bone from donor sites. These instruments typically consist of a hollow cylinder with a circular-saw-like edge, a centering point, and a handheld, powered (e.g., electric) rotary surgical handpiece. Bone harvesting surgery trephines are used to obtain bone grafts (plugs) from donor sites (e.g., iliac crest, tibia, femur) used in autologous transplants for osseous reconstruction in procedures such as the repair of craniomaxillofacial bony defects.
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