METHOD OF MANUFACTURING INDIVIDUAL NEUROSURGICAL DEVICES FOR RECONSTRUCTION OF BONE DEFECTS AFTER REMOVAL OF NEOPLASMS OF THE CRANIO-ORBITAL AREA AND A METHOD OF INSTALLING INDIVIDUAL NEUROSURGICAL DEVICES FOR BONE RECONSTRUCTION DEFECTS AFTER REMOVAL OF CRANIO-ORBITAL REGION Russian patent published in 2024 - IPC A61F2/28 A61B34/10 

FIELD: neurosurgery.

SUBSTANCE: invention can be used to control the quality of manufacturing and installation of individual neurosurgical devices during the reconstruction of bone defects. To control the quality of manufacturing neurosurgical devices, five objects are made: a model of a fragment of the patient’s skull, including pathologically altered bone structures of the cranio-orbital region, on a scale of 1:1; model of a skull fragment containing a defect in bone structures modelled in accordance with the planned volume of tumour removal, on a scale of 1:1; an individual stencil for intraoperative marking of the planned boundaries of the bone defect; an implant made of bioinert material for reconstruction of the bone defect being formed and a mock-up of the implant on a scale of 1:1. The stencil is compared with a model of the skull with the tumour to check their geometric compatibility and the quality of the stencil. The implant and the implant model are compared with the skull model with a defect in the bone structures to check their geometric compatibility and the quality of the implant. The implant mock-up is compared with the implant to verify their geometric identity and the quality of the implant. In case of discrepancy between the shapes and/or sizes of the specified objects, the latter are modelled and re-manufactured taking into account the characteristics of the identified defects. Based on neuroimaging images of the patient’s skull containing a neoplasm, a computer-implemented simulation of the planned area of bone resection in the cranio-orbital region is performed. Computer-assisted implant modelling is performed to reconstruct the bone defect in the planned resection area. Installation of an implant into a bone defect is simulated. The resulting images are loaded into a hardware-software complex for frameless neuronavigation to enable intraoperative control of implant positioning.

EFFECT: increasing the efficiency of quality control of manufacturing and installation of individual neurosurgical devices for the reconstruction of bone defects after removal of cranio-orbital tumours.

4 cl, 2 ex