Surgical screw-in instrument for loosening screw in bone of patient, has tool portion articulately held relative to handling portion and comprising screw-in tool and holder device formed for engagement with holding instrument in position

摘要

The screw-in instrument (12) has a tool portion (18) articulately held relative to a handling portion (16). The tool portion comprises a screw-in tool and a holder device formed for engagement with a holding instrument in a holding position. The holder device comprises a holding element at the tool portion. The holding element is arranged at a retaining portion, which is formed rotation symmetrically relative to a longitudinal axis defined by the tool portion. The holding element is formed in a retaining projection or a retaining recess. The recess is in a form of a groove. The screw-in tool is formed in form of a tool projection or a tool recess. The holding instrument is in a form of screw holding pliers.