IMPLANT FOR CRANIAL BONES PROSTHETICS AND METHOD OF IMPLANT MANUFACTURE FOR CRANIAL BONES PROSTHETICS Russian patent published in 2017 - IPC A61F2/28 A61B17/80 A61L27/06 

FIELD: medicine.

SUBSTANCE: method of manufacturing an implant for cranial bones prosthetics, repeating the geometry of cranial bones to be prosthetically applied and adjacent to the missing part of skull, that is, the skull defect, consists of the following steps: a computed tomography of the skull with defects is made; from the images obtained from the tomogram, a three-dimensional image of the skull with defects subject to editing is created, that is, a digital three-dimensional model of the skull using software; the volumetric image is edited, virtually cutting out at least a portion of the skull with the missing part of the bone to obtain a digital three-dimensional model and its file; the missing part of the cranial bone is virtually projected on the basis of the tomogram with obtaining its digital three-dimensional model and its file; based on the received digital three-dimensional models on a 3D printer, a three-dimensional plastic model of the missing part of the cranial bone and a three-dimensional plastic model of at least a part of the skull with the missing part of the cranial bone are made; mesh perforated flat workpiece with through holes of titanium or titanium alloy is made according to the surface size of the resulting plastic model of the missing part of the cranial bone with overlap, cutting off, if necessary, the excess; the resulting flat implant workpiece is flexed by plastic deformation method along the surface of the assembly consisting of a plastic model of the missing part of cranial bone and a plastic model of at least a part of the skull with the missing part of cranial bone, forming before the surgery a curved mesh perforated plate with through holes in from of curved body. The implant for cranial bones prosthetics, obtained by the above method, represents a curved body made in the form of a mesh perforated plate made of titanium or a titanium alloy with through holes, that are fastening elements, that repeats the geometry of cranial bones to be prosthetically applied, and precisely adjacent to the edges of the skull defect - the missing part of the skull, having bridges between the holes of the mesh plate and in which at least one extreme row of holes is calibrated along the outer perimeter, wherein the curved mesh plate with through holes is attached to the cranial bones using fastening means through the through holes of the mesh plate that replaces in inversed manner any bones of the head and facial skull.

EFFECT: improvement of accuracy of fit of the implant to the edges of the skull missing part around the skull and avoidance of need to bend plate during operation and its adjustment to the size of the defect, which drastically reduces labour intensity of operation as a whole.

24 cl, 15 dwg