title: Investigations of the pushability behavior of cardiovascular angiographic catheters.
abstract: The placement of angiographic catheters into the vascular system is a routine procedure in modern clinical business. The definition of objective but not yet available evaluation protocols based on measurable physical quantities correlated to the empirical clinical findings is of utmost importance for catheter manufacturers for in-house product screening and optimization. In this context, we present an assessment of multiple mechanical and surface catheter properties such as static and kinetic friction, bending stiffness, microscopic surface topology, surface roughness, surface free energy and their interrelation. Theoretical framework, description of experimental methods and extensive data measured on several different catheters are provided and in conclusion a testing procedure is defined. Although this procedure is based on the measurement of several physical quantities it can be easily implemented by commercial laboratories testing catheters as it is based on relatively low-cost standard methods.
authors.affiliation: Kunststoff-Zentrum in Leipzig GmbH (KuZ), Erich-Zeigner-Alle 44, D-04229 Leipzig, Germany. bloss@kuz-leipzig.de
authors.forename: Peter
authors.initials: P
authors.lastname: Bloss
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Rothe
authors.forename: Peter
authors.initials: P
authors.lastname: Wünsche
authors.forename: Christian
authors.initials: C
authors.lastname: Werner
authors.forename: Alexander
authors.initials: A
authors.lastname: Rothe
authors.forename: Georg Dieter
authors.initials: GD
authors.lastname: Kneissl
authors.forename: Wolfram
authors.initials: W
authors.lastname: Burger
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Rehberg
mesh_terms: D000792:Angiography / Q000295:instrumentation* / Q000379:methods*; D001158:Arteries / Q000502:physiology*; D002404:Catheterization / Q000295:instrumentation* / Q000379:methods*; D004548:Elasticity; D019544:Equipment Failure Analysis / Q000379:methods*; D017276:Friction; D006244:Hardness; D008955:Models, Cardiovascular; D013223:Statistics as Topic; D013314:Stress, Mechanical; D013500:Surface Tension