UCL CARDIOVASCULAR ENGINEERING LABORATORY
UCL CARDIOVASCULAR ENGINEERING LABORATORY
Auxetic structures exhibit a globally negative Poisson’s ratio (when strained in one direction, expand also along one or more of the remaining principal directions). This unconventional behaviour is associated with mechanical characteristics significantly different from ‘standard’ materials, such as higher flexural bending strength and enhanced resistance to buckling under bending. Because of these properties, auxetic structures are excellent candidates for a number of medical devices, such as angioplasty stents or annuloplasty rings.
We are studying the mechanical behavior of auxetic structures and their application to medical devices such as annuloplasty rings or stents.
Currently, in collaboration with Prof J Humphrey and Prof G Tellides at Yale University, USA, we are investigating the use of auxetic grafts for the treatment of aortic stiffening, a recently recognized predictor of cardiovascular events and death.
MAIN RELATED PUBLICATIONS
Karnessis N, Burriesci G. (2013) Uniaxial and buckling mechanical response of auxetic cellular tubes. Smart Mater. Struct. 22 084008. doi:10.1088/0964-1726/22/8/084008
Burriesci G, Bergamasco G. Annuloplasty prosthesis with an auxetic structure. US8034103 (B2)
Scarpa, F., Burriesci, G., Smith, F. C., Chambers, B. (2003). Mechanical and electromagnetic behaviour of auxetic honeycomb structures. The Aeronautical Journal 107(1069), 175-183.
Smith, F. C., Scarpa, F., Burriesci, G. (2002). Simultaneous optimization of the electromagnetic and mechanical properties of honeycomb materials. Smart Structures And Materials 2002: Smart Structures And Integrated Systems 4701, 582-591.
Smith, F. C., Scarpa, F., & Burriesci, G. (2002). Simultaneous optimization of the electromagnetic and mechanical properties of honeycomb materials. SPIE's 9th Annual International Symposium on Smart Structures and Materials (pp. n.68022535). San Diego, CA, USA.
RESEARCH TEAM
Design and assessment of medical devices
In vitro simulation of physiological systems
Nick Karnessis
Analytical and numerical study of auxetic materials
Smart materials and structures design and assessment
In vivo assessment and clinical coordination
Design and assessment of medical devices
* YALE University, USA
** University of Bristol, UK
FUNDED BY
Smart Structures
for Biomedical Applications
improving medical devices performances
with advanced smart structures
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