Cynthia Harmon Jarntip Pitayagulsarn Advisor: Ted Larson February 18. 2002 Catheter Design
Project Definition • Objective: Determine a new design of a catheter that will increase control and maneuvering • Main Issues: Decrease use of vessels walls, increase speed of insertion, efficiently moving the device through the body
Arteries to Aneurysms • Insertion in the femoral artery leads up to the carotid artery • Three main parts of the carotid artery: common, internal, and external • Extreme degree of branching and curving
Arteries to Aneurysms continued • Carotid artery helps lead to aneurysm • Forms bubble in vessel • Blood is blocked from vessel with embolization and coil. • Catheter procedure used for embolization and coils
Current Status • Prove using stitches will: • reduce effects of drag • induce curving • increase travel
Key Issues • Stitches can not catch on vessel walls • Length of stitching • Biocompatibility • Levitation of catheter in artery • Configuration • Control of rotation • Keeping catheter in laminar profile
Future Work • Determine stitching to avoid catching on vessel wall through fluid dynamics. • Illustrate the effects of stitching on the flow and curvature of the catheter.
References • Kerber, C. W., Heilman, C.B. “Flow Dynamics in the Human Carotid Artery: I. Preliminary Observations Using a Transport Elastic Model.” American Journal of Neuroradiology. Jan/Feb 1992, Vol 13, No 1. 173-180. • Griffing, David, f. The Dynamics of Sports. Dalog Company: Oxford, Ohio, 1987. • Kuethe, A. M., Chuen-Yen, C. Foundations of Aerodynamics. Wuinn-Woodbine, Inc: Phoenix, Az. 1998. • http://www.mayo.edu/ISUIA/aneur.jpg. • http://illuminations.nctm.org/imath/912/cardiac/student/images/catheter.jpg. • www.psrc.usm.edu/italian/ baseball.jpg.