1 / 12

Catheter Design

Catheter Design. Advisor: Dr. Ted Larson Cynthia Harmon Jarntip Pitayagulsarn April 10, 2002. Dr. Ted Larson. Vanderbilt University Assistant Professor of Radiology and Radiological Sciences Assistant Professor of Otolaryngology Director of Interventional Neuroradiology

georgianav
Download Presentation

Catheter Design

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Catheter Design Advisor: Dr. Ted Larson Cynthia HarmonJarntip Pitayagulsarn April 10, 2002

  2. Dr. Ted Larson • Vanderbilt University • Assistant Professor of Radiology and Radiological Sciences • Assistant Professor of Otolaryngology • Director of Interventional Neuroradiology • Director of Head and Neck Radiology

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

  4. 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

  5. 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

  6. 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

  7. Current Status • Built a model to test the effect of stitches on the catheter • Implement different kinds of stitching on model to determine optimal orientation • Determining the Reynolds Number

  8. The Flow Similarity Model • Large tube signifying the artery • Small tubing used as catheter • A pump pumping a “blood like” substance • Flow measured with bucket and stopwatch, using volume and time • Tubing's effects observed within the tube during flow

  9. Flow of Blood • Reynolds number=250 • Re=ρDv/μ • flow rate .02925 m/sec to hold same Reynolds number • Glycerol Water viscosity=2.5cp • diameter=1.5875 cm • density= 1130.5kg/m^3

  10. 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 • Many possible designs to test

  11. Future Directions • Use Reynolds number of 250 • Determine the density through displacement • Measure weight and water coming out of tubing, to determine the flow rate • Observe the effects of different stiching

  12. 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

More Related