TOMSK, Jan 17– RIA Tomsk. The implants developed at
Tomsk Polytechnic University (TPU) passed a series of preclinical tests in the
Orthopaedics Ilizarov Center (Kurgan); results of experiments showed that these
medical products help to reduce terms of lengthening of extremities almost
twice, is reported on Thursday on the website of the university.
It is added that Ilizarov's device, known in Russia,
is used to correction of proportions of a body, curvature of legs, congenital
deformations and so on. The modern Ilizarov's device consists of titanic or
carbon fiber cores which are fixed on an extremity on plates of various form
and connect among themselves with mobile bars. Due to the movement of these
bars doctors also carry out manipulations with a bone.
"Conductor"
"In cases when a bone needs to be extended – for
example when a child has legs of different length – the bone is dissected, its
parts are slowly moved apart. The implant developed by us represents a titanic
or steel needle, it is used as a "conductor" helping to create a new
bone tissue", – the associate professor of Weinberg Research Center of TPU
Sergey Tverdokhlebov is quoted in the message.
© с сайта "Электронная энциклопедия ТПУ"
According to him, a task which such implant helps to
solve, is acceleration of regeneration of a bone, and, therefore, reduction of
term of rehabilitation.
"In the Orthopaedics Ilizarov Center in Kurgan
the implants developed by experts of TPU went through a stage of preclinical
tests. During preclinical tests the Tomsk implants helped to reduce the terms
necessary for lengthening of an extremity, almost twice. Results of researches
are presented in the Biomedical Materials magazine (IF 2.89; Q2)", – it is
said in the statement.
Two types of "smart" coverings
As the press service specifies, implants-needles are
made of steel and compound VT6 (titanium alloy with aluminum and vanadium).
Scientists applied special coverings on them.
"Polytechnics applied a covering with method of
aerodynamic formation on steel needles, it represents composite material on the
basis of piezoelectric fluorocarbon plastic and a hydroxyapatite. Researchers
applied a covering from calcium-phosphate with method of microarc oxygenating
on titanic implants", – it is said in the statement.
According to the research associate of the Laboratory for
Plasma Hybrid Systems of TPU Evgeny Bolbasov, technologies for production as
implants, and for drawing coverings on them are developed at the university.
These coverings are brought closer on the structure and physical
characteristics to a real bone tissue that improves survival of implants.
"Besides, there is bone marrow in large tubular
bones, and in it there are a large number of mesenchymal stem cells that can
differentiate into different cell types. The covering on an implant imitating
structure of a bone forces these stem cells "to retrain" into bone
material. The new bone tissue begins to be increased strenuously around an
implant", – the scientist is quoted in the message.
It is noted that after a successful completion of
process of regeneration the implant is removed.