Personalized medical device and method of its preparation
A personalized medical device intended for correction of defects, in particular in the orofacial area is multicomposite and comprises a hard tissue replacement and a soft tissue replacement. The hard tissue replacement is a hard core of biocompatible thermoplastic material and the soft tissue replacement is a biocompatible elastic substance. Preparation of personalized medical device even in the prenatal period using CT, MRI and 3D/4D electronic USG imaging and “additive manufacturing” technology.
1 . A method for preparation of a personalized medical device intended for correction of defects in the orofacial area, which is multi-composite and comprises a hard tissue replacement and a soft tissue replacement, wherein the hard tissue replacement is a bone tissue replacement of biocompatible thermoplastic material and the soft tissue replacement is a muscle and epithelial soft tissue replacement of biocompatible elastic substance, wherein the biocompatible thermoplastic material for the non-implantable device is polypropylene sulfone and the biocompatible thermoplastic material for the implantable device is a synthetic osseointegratable non-resorbable material which are polyaryl ketones or polyaryl ketones in combination with ceramics or polyaryl ketones in combination with ceramics and with reinforcement, wherein the method takes place at the prenatal time examined by CT, MRI, USG to obtain DICOM data and comprises the following steps:
a) preparation of image dataset of 2D image sections of interest of damaged hard and soft tissues of fetal orophation obtained by USG visualization;
b) the prepared image dataset of 2D image sections of interest of three mutually perpendicular planes is adjusted by multiplanar, rendering, sectional and volume adjustment to a 3D ultrasound dataset of anthropometric and anatomical data;
c) the prepared 3D ultrasound dataset of the scanned sections is processed into the output 3D image format;
d) the most suitable anatomical areas of interest are selected by post-processing processing of 3D image format;
e) subsequently the modelling of the PNAM device itself is realized, which includes both hard and soft palate;
f) subsequently the 3D image format is compared also with MRI and CT imaging of fetal orophation;
g) a 3D/4D ultrasound, CT and MRI algorithm for displaying facial clefts with the creation of post-processing output of DICOM data for 3D modelling and processing for additive manufacturing in form of 3D printing is created-;
h) anthropometric and anatomical data using DICOM editable software platforms are evaluated and a digital reference model in form of a STL network model with accurate localization of the hard and soft tissues defect is created;
i) the extent of hard and soft tissue deformation is measured exactly on a digital reference model;
j) based on a digital reference model, a digital personalized medical device is created;
k) a clinically applicable model of a personalized multicomposite medical device containing hard tissue and soft tissue replacement is produced.
2 . The method for preparation of the personalized medical device according to claim 1 , wherein the hard tissue replacement is surface treated by coating or dipping.
3 . The method for preparation of the personalized medical device according to claim 2 , wherein the surface treatment of the hard tissue replacement is adapted to attach residual cleft-affected soft tissue of orophation.
4 . The method for preparation of the personalized medical device according to claim 1 , wherein prior to producing a clinically applicable model of the personalized medical device, a reference model of the deformity itself as well as a medical device model is additively produced, wherein there are validated dimensions on the reference models and are considered by consultation in terms of fixation and application parameters.