<p>Figure 2. Length of the sheath support – three different lengths of the free catheter tip (distance from the end of the sheath to the catheter tip: 3,5 cm, 7 cm and 14 cm).</p>

Box plots show median and interquartile range. Figure 7. Effect of changing the magnetic field intensity on the maximum achievable contact force for individual sheath support values.

Each panel shows results at a fixed free catheter tip length: A – 3.5 cm (maximum sheath support); B – 7 cm; C – 14 cm (minimum sheath support). Within each panel, contact force increased with higher magnetic field intensity for most catheter–sheath combinations. Magnoflush achieved the highest overall contact force at 3.5 cm sheath support (up to 29.25 g).

Box plots show median and interquartile range, A – 3,5 cm; B – 7 cm; C – 14 cm. Figure 8. Effect of different flow rates on the maximum achievable contact force at different values of magnetic field intensity.

Results are shown for Navistar RMT (panels A–B), MAGiC™ (panels C–D), and Magnoflush (panel E) at 0.08 T and 0.10 T. No statistically significant differences were observed between flow rates of 2, 17, and 30 ml/min in any catheter or orientation, confirming that irrigation flow rate does not influence contact force under the conditions tested. Box plots show median and interquartile range. A – Navistar, perpendicular setting; B – Navistar, longitudinal setting; C – MAGiC™, perpendicular setting; D – MAGiC™, longitudinal setting; E – Magnoflush, longitudinal setting.</p> <p>(ZIP)</p>