Surgical instrument for conization of the cervix

摘要

An instrument for cold conization of the cervix includes a pair of round nose, pivoted blades which are advanced by a camming mechanism as the instrument is rotated. During rotation of the blades they are progressively cammed to their closed position by a sliding actuator, thereby providing a continuous helicoid cut. The blade operating mechanism does not protrude beyond the diameter of the blades themselves at any time. In one form of the invention a screw mechanism causes automatic advance of the blades to produce a helicoid cut upon rotation of the body by the actuator.