INTRAORAL COMPRESSION-DISTRACTION APPARATUS FOR REPLACEMENT OF MANDIBULAR DEFECTS Russian patent published in 2022 - IPC A61B17/68 A61B17/80 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely maxillofacial surgery. Intraoral compression-distraction apparatus for the replacement of mandibular defects includes a plate intended for connection with a fixed bone fragment, a plate intended for connection with a movable bone fragment, and a means of moving a plate intended for connection with a movable bone fragment connected to a drive relative to a plate intended for connection with a fixed bone fragment. The means of movement contains a rail cantilevered on a plate designed to connect to a fixed bone fragment, having a curved shape in plan with depressions on one side located at an angle to the radius of curvature of the rail, and a slider whose body on one outer side has a rectangular shape in plan with projections at the corners, in the grooves between which a plate is rigidly fixed, designed to connect with a movable bone fragment. Inside the body of the slider with a gap relative to the plate intended for connection with a movable bone fragment and parallel to it, a through curved hole in the plan is formed, in which a rail is placed, cantilevered fixed on a plate intended for connection with a fixed bone fragment. The walls of the slider body inside the hole are supported from above.

EFFECT: invention makes it possible to create significant relief to the patient in aesthetic terms, when using it, gross defects and defects in cheek tissues are not formed as a result of distraction on the cheek, there is no need after the operation using the claimed technical solution to carry out a subsequent operation to improve the aesthetics of the face, there is a simplification in the design of the device and simplification of the operation, the arsenal of means used in the replacement of mandibular defects expands.

1 cl, 28 dwg