Miniscrew with double adopted head for screwdriver tip and screwdriver applied thereto

摘要

The present invention provides miniscrews and screwdrivers that can be effectively applied to general orthodontic patients, orthognathic surgery, and jaw fracture surgery by allowing miniscrew placement to be performed more easily and stably.To this end, the present invention comprises a screw body having a threaded portion to be inserted into a jaw, and a screw head provided on an upper side of the screw body, wherein the screw head is formed to have a polygonal outer surface, A screwdriver tip corresponding to a screwdriver tip shape of the screwdriver is formed on the upper surface of the mini screw, and the screwdriver tip is provided with a screwdriver capable of engaging with a coupling groove formed on the upper surface of the miniscrew to transmit a rotational torque A rod-shaped driver spindle; A fixture coupled to the driver spindle; A screw enclosure installed to be movable along an axial direction on a screw shaft of the screw body under the fixing body and adapted to engage with the screw head to enclose the polygonal outer surface of the screw head and to transmit rotational torque to the miniscrew together with the screwdriver; And an elastic member provided between the fixture and the screw enclosure so as to have a tendency to move downwardly of the screw spindle with respect to the screw enclosure.