Flexibility of guidewires

• Autorzy: Pelyhe, L. , Kertész, A.
• Języki publikacji: EN

Abstrakty

EN

The guidewire is a flexible medical device, which subserves the navigation and positioning of devices for angiography and angioplasty. In our study we present a method for the determination of guidewires' bending stiffness and flexibility (reciprocal of the bending stiffness) improved by our research group. With this method the flexibility can be detachedly defined, it is quantitative and by this new technique different guidewires can be compared. We characterized the bending stiffness, which value does not change at the first 15 mm of the guidewires’ distal end (this part is inserted into the patient). The deflection of guidewires was performed by a tensile test machine. We examined three guidewires. As for the reliability of our method, we drew conclusions from the coefficients of variation. Our three coefficients were between 0.8-0.13 so our methodology is reliable; it is suitable for the objective determination and comparative analysis of the flexibility of guidewires.

Słowa kluczowe

PL

urządzenie medyczne; drut prowadzący; elastyczność; sztywność zginania

EN

medical device; guidewires; flexibility; bending stiffness

• Czasopismo: Selected Engineering Problems
• Rocznik: 2013
• Tom: nr 4
• Strony: 133--138
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Pelyhe, L.

• Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, Hungary,
• MTA–BME Research Group for Composite Science and Technology, Budapest, Hungary

autor

Kertész, A.

• Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, Hungary

Bibliografia

• 1. ISO, Sterile single-use intravascular catheter introducers, ISO 11070:1998, International Organization for Standardization.
• 2. Walker C.: Guidewire Selection for Peripheral Vascular Interventions. “Endovascular Today” 2013, Vol. 5, pp. 80 – 83.
• 3. Morgan R.A., Walser E.: Handbook of Angioplasty and Stenting Procedures, London: Springer-Verlag, 2010.
• 4. Kern M.J.: The Interventional Cardiac Catheterization Handbook, Philadelphia: Elsevier Health Sciences, 2012.
• 5. DrugCite 2013, Most common guide wire reports to the FDA. Available from: <http://www.drugcite.com/?q=GUIDE+WIRE&a=&s=> [18 November 2013].
• 6. ScholarlyBrief: Sinusitis: New Insights for the Healthcare Professional: 2013 Edition, Atlanta: ScholarlyEditions, 2013.
• 7. Mullins C.E.: Cardiac Catheterization in Congenital Heart Disease: Pediatric and Adult. Chichester: John Wiley & Sons, 2008.
• 8. Lanzer P.: Catheter-Based Cardiovascular Interventions. A Knowledge-Based Approach. Berlin: Springer-Verlag, 2012.
• 9. Pelyhe L., et al.: Kinking resistance of guidewires. “Materials Science Forum” 2013, Vol. 729, pp. 476 – 481.
• 10. Szabadíts P., et al.: Examination method of uncoated Coronary Stents. “Periodica Polytechnica – Mechanical Engineering” 2010, Vol. 54, pp. 77 – 82.
• 11. FDA Guidelines: Coronary and Cerebrovascular Guidewire Guidance, January 1995.
• 12. Schröder J.: The mechanical properties of guidewires: Part I: Stiffness and Torsional Strength. “Cardiovasc Intervent Radiol.” 1993, Vol. 16, pp. 43 – 46.