Design of braided composite cardiovascular catheters based on required axial, flexural, and torsional rigidities.
Cardiovascular catheterization is a common medical procedure. A single braided catheter with different rigidities at the proximal and distal ends can, if properly designed, provide the necessary control and flexibility and thus replace the current two-piece (external catheter/internal guidewire) system. An analytical model based on classical laminate plate theory was developed in order to predict the elastic properties of angle-plied, single-overlap two-dimensional fiber composite tubular braids, which are required for the determination of the axial, flexural, and torsional rigidities. In this work the analytical model has been used to design one-piece cardiovascular catheters with axial, flexural, and torsional rigidities similar to those values for existing two-piece catheters, thus validating the model as a tool for designing braided cardiovascular catheters.
Carey
Jason
J
Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G8. jason.carey@ualberta.ca
Fahim
Atef
A
Munro
Michael
M
D001672:Biocompatible Materials / Q000737:chemistry*; D006328:Cardiac Catheterization / Q000295:instrumentation*; D002404:Catheterization; D004548:Elasticity; D006801:Humans; D008422:Materials Testing; D019563:Mechanics; D008954:Models, Biological; D018583:Pliability; D011108:Polymers / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D013314:Stress, Mechanical
D001672:Biocompatible Materials; D011108:Polymers; D012117:Resins, Synthetic