D01L06 D Tarnita - University of Craiova Steps Towards Interdisciplinary Research and EducationPresentation Transcript
University of Craiova INTERDISCIPLINARY RESEARCH AND EDUCATION
Research in Electrical Engineering
General Electrical Engineering
Electro-techniques of low temperatures
Special electric apparatus
Engineering and Environment protection in Industry
Administration of electro-mechanical machinery quality
High complexity electro-mechanical systems
Automatics, Computers and Electronics
Unconventional Control systems
Complex systems Automatics
Farm Produce Processing Technology
Engineering and Environment Protection in Agriculture
Biological Foundations of Plants Protection
Non-polluting agricultural ecosystems operation
“ Banu Maracine” Didactic Research Centre
The Botanical Garden
University Club House
“ TeleUniversitatea” Television Studio
Scale model of the University of Craiova future IT Park
Institutional projects: 6
Individual projects: 42
Finances: 2.1 mil. USD
ERASMUS and PHARE
2001-2009 (Average yearly values)
Student mobility: 90 students / 420 months
Academic staff mobility: 235 teachers
LEONARDO DA VINCI
Student mobility : 30 students / 85 months
Academic staff mobility : 12 teachers
RESEARCH PROGRAMMES (Values in Euro)
Modular orthopedic implants based on intelligent materials
Applications of Shape Memory Alloys, especially Nitinol, to the biomedical field have been successful because of their advantages over conventional implantable alloys, enhancing both the possibility and the execution of less invasive surgeries.
Important properties of Nitinol: biocompatibility, super elasticity, force hysteresis, shape memory effect, excellent corrosion, torquability, less sensitivity to magnetic resonance imaging and biomechanical compatibility.
The shape memory alloys possess the ability to
undergo shape change at low temperature and retain
this deformation until they are heated, at which point
they return to their original shape.
The failure rate for surgeries using classical plates is 30-40% due to the following:
The absence of continuous compression
Extensive destruction of soft tissue
Extensive destruction of blood vessels. Due to this, the nutrient filled blood can not reach the fracture and healing is not achieved.
Frequent infections because of the large incisions.
The design idea of modular adaptive orthopedic implants results from the following observations:
- the doctors have a limited degree of freedom in selecting the proper dimensional devices for bones fractures;
- the current mechanical devices used in orthopedics don’t ensure a permanent contact and a continue compression to the fractured parts of the bone;
to develop bone calluses, to recovery the bone and to improve the healing process, it is essential that the fractured parts have to be in permanent contact, have to be anatomical reduced and it is necessary to be exerted a continue compression;
The first option for our team it is focused on creating a modular adaptive plate for fracture bone osteosynthesis, realized from modules completely interchangeable, made of titanium or stainless steel and from connecting elements as U-shaped staples made of Nitinol.
Modules for the diaphiseal region of the long bones:
Modules and modular plates for the diaphiseal and epiphiseal regions of the long bones:
Conclusions for the modular orthopedic plates:
1.The adaptive modular implants based on smart materials represent a superior solution in the osteosynthesis of the fractured bones over the conventional implants known so far. This conclusion is validated by in vitro and in vivo experiments.
2.The superiority of this design
a) their structure is based on small modules which can be mounted easily on the bone and can be used for every region of the bone,
c) by combining a certain number of modules, we can obtain implants with various lengths depending of type, position or dimension of the fracture;
d)the possibility of mounting the Nitinol staple to the modules near the fracture enables the stabilization and the rigidity of the implants as well as the good compaction and the good union of the bone fractures, which are essential restrictions in the healing process.