Experimental and mathematical characterization of coronary polyamide-12 balloon catheter membranes

Autor: Jakob D Eckmann, Dominik Maier, Gerhard Sommer, Gerhard Holzapfel, Patrick Szabo, Emmanouil Agrafiotis, Daniel Ch Haspinger, Thomas Schratzenstaller, Markus A Geith
Rok vydání: 2020
Předmět:
Polymers
Cardiovascular Procedures
Constitutive equation
02 engineering and technology
Balloon
Polynomials
Cardiac Catheters
Medicine and Health Sciences
Composite material
Angioplasty
Balloon
Coronary
Materials
0303 health sciences
Multidisciplinary
Physics
Applied Mathematics
Classical Mechanics
Heart
Condensed Matter Physics
Finite element method
Clamping
Deformation
Biomechanical Phenomena
Chemistry
Membrane
Macromolecules
Physical Sciences
Medicine
Engineering and Technology
Research Article
Biotechnology
Materials science
Catheters
Coronary Stenting
Science
0206 medical engineering
Finite Element Analysis
Materials Science
Material Properties
Bioengineering
Surgical and Invasive Medical Procedures
Models
Biological
Viscoelasticity
03 medical and health sciences
Tensile Strength
Adhesives
030304 developmental biology
Damage Mechanics
Membranes
Myocardium
Isotropy
Balloon catheter
Biology and Life Sciences
Polymer Chemistry
020601 biomedical engineering
Nylons
Algebra
Stent Implantation
Anisotropy
Medical Devices and Equipment
Stress
Mechanical
Mathematics
Zdroj: PLoS ONE
PLoS ONE, Vol 15, Iss 6, p e0234340 (2020)
ISSN: 1932-6203
Popis: The experimental quantification and modeling of the multiaxial mechanical response of polymer membranes of coronary balloon catheters have not yet been carried out. Due to the lack of insights, it is not shown whether isotropic material models can describe the material response of balloon catheter membranes expanded with nominal or higher, supra-nominal pressures. Therefore, for the first time, specimens of commercial polyamide-12 balloon catheters membranes were investigated during uniaxial and biaxial loading scenarios. Furthermore, the influence of kinematic effects on the material response was observed by comparing results from quasi-static and dynamic biaxial extension tests. Novel clamping techniques are described, which allow to test even tiny specimens taken from the balloon membranes. The results of this study reveal the semi-compliant, nonlinear, and viscoelastic character of polyamide-12 balloon catheter membranes. Above nominal pressure, the membranes show a pronounced anisotropic mechanical behavior with a stiffer response in the circumferential direction. The anisotropic feature intensifies with an increasing strain-rate. A modified polynomial model was applied to represent the realistic mechanical response of the balloon catheter membranes during dynamic biaxial extension tests. This study also includes a compact set of constitutive model parameters for the use of the proposed model in future finite element analyses to perform more accurate simulations of expanding balloon catheters.
Databáze: OpenAIRE
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