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Catheter Design

Catheter Design. Advisor: Dr.. Ted Larson Cynthia Harmon Jarntip Pitayagulsarn March 20, 2002. Project Definition. Objectives: Determine a new design of a catheter that will increase control and maneuvering Solution: Implement stitching along tubing of catheter. Ideas for the Catheter.

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Catheter Design

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  1. Catheter Design Advisor: Dr.. Ted Larson Cynthia HarmonJarntip Pitayagulsarn March 20, 2002

  2. Project Definition • Objectives: Determine a new design of a catheter that will increase control and maneuvering • Solution: Implement stitching along tubing of catheter

  3. Ideas for the Catheter • Wings on an airplane • Dimples on the golfball • A parachute • The curve of a frisbee • And the decision… stitching on a baseball

  4. Catheters and the Carotid Artery • High degree of branches and extremely tortuous • Do not necessarily want catheter to go in the direction of blood flow • Present complications when maneuvering the catheter

  5. Arteries to Aneurysms • Carotid artery helps lead to brain aneurysms • Coil will be inserted with aid of catheter to block blood flow into the aneurysm • Once complete, catheter needs to be removed from body

  6. Current Status • Fluid mechanics and finite element knowledge lacking • Building a model to test the effect of stitches on the catheter • Implement different kinds of stitching on model to determine optimal orientation

  7. Key Issues • May cause blood clotting • Difficulty in removing catheter from the body because stitching may get caught • Stitches may have negative impact on catheter

  8. Future Directions • Begin building model by using plastic tubing, thin wire, and glycerol water • Test model by placing weight on the end • Measure flow rate of water coming out of tubing • Observe the effects within the tubing, such as the movement of the “catheter”

  9. 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. • www.breg.com/.../ painmanagement_accessories.html • www.vesalius.com/.../caro_anat/ cfsb_caro_anat1.asp • www.russellchun.com/ brain.html • www.kenkifer.com/bikepages/ touring/bags.htm

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