Impact of lock solutions on the mechanical performance of polyurethane central venous catheters: A comparative study
- PMID: 37331749
- DOI: 10.1016/j.medengphy.2023.103994
Impact of lock solutions on the mechanical performance of polyurethane central venous catheters: A comparative study
Abstract
The impact of ethanol locks on the mechanical performances of central venous catheters was compared to that of aqueous-based locks. Several mechanical tests were performed to evaluate catheter behavior: kinking radius measurements, burst pressure, and tensile tests. Different polyurethanes were studied to assess the impact of radio-opaque charge and polymer chemical composition on catheter behavior. The results were correlated to swelling measurements and calorimetric measurements. In particular, ethanol locks have a higher impact on long contact time than aqueous-based locks: stresses and strains at break were lower, and kinking radii were higher. However, for all catheters, the mechanical performances remain much higher than the normative requirements.
Keywords: Burst pressure; Central venous catheter; Ethanol lock; Kinking; Polyurethane; Tensile testing.
Copyright © 2023. Published by Elsevier Ltd.
Conflict of interest statement
Declaration of Competing Interest there was a partnership with Vygon company concerning A. Khzam‘s doctoral fellowship.
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