Orczykowski Michal, Bak Maciej, Glowniak Andrzej, Kaczmarek Krzysztof, Urbanek Piotr, Bodalski Robert, Dubowski Krzysztof, Jargielo Anna, Derejko Pawel, Ptaszynski Pawel, Szumowski Lukasz
Arrhythmia Center, National Institute of Cardiology, Warsaw, Poland.
Department of Cardiology, Medical University of Lublin, Lublin, Poland.
J Interv Card Electrophysiol. 2025 Jul 14. doi: 10.1007/s10840-025-02092-x.
Contact force (CF) in manually controlled catheters is crucial for forming an optimal lesion. There is lack of published data on CF values of MAGiC catheter (Stereotaxis, St. Louis, MO, USA) in magnetic field.
We conducted a total of 2500 CF measurements using the Robotic Magnetic Navigation (RMN) system (Stereotaxis, St. Louis, MO, USA), a magnetic-guided 8,5 Fr RF ablation catheter MAGiC (Stereotaxis, St. Louis, MO, USA) inserted through a long sheath, and a precision jewelry scale (IKEME, Guangdong, CN). We analyzed the impact on the obtained CF values of five different magnetic field vectors (transverse, caudal, cranial, sagittal, and anterior), two field strengths (0.1 T and 0.08 T), and five catheter extension configurations from the long sheath. Additionally, we compared the CF values of the MAGiC catheter and the THERMOCOOL® RMT Catheter (Biosense Webster, Irvine, CA, USA) using two models.
The measured CF values of MAGiC catheter ranged from 5.62 to 21.61 g (0.1 T) and 3.63 to 20.74 g (0.08 T) and varied depending on the vectors. CF was higher at 0.1 T than 0.08 T, with values ranging from 9.32 to 21.61 g (0.1 T) and 8.71 to 20.74 g (0.08 T). In Model I comparison of MAGiC and THERMOCOOL® RMT, the MAGiC catheter had significantly higher CF (p < 0.001) in 28/30 measurements scenarios. In Model II, CF was higher in 24/30 scenarios (p < 0.001).
The MAGiC catheter provides consistently optimal CF values across multiple orientations and catheter extension models, outperforming the THERMOCOOL® RMT Catheter in most scenarios.
手动控制导管时的接触力（CF）对于形成最佳损伤至关重要。关于美国密苏里州圣路易斯市Stereotaxis公司的MAGiC导管在磁场中的CF值，目前尚无公开数据。
我们总共进行了2500次CF测量，使用了机器人磁导航（RMN）系统（美国密苏里州圣路易斯市Stereotaxis公司）、通过长鞘插入的磁导向8.5 Fr射频消融导管MAGiC（美国密苏里州圣路易斯市Stereotaxis公司）以及精密珠宝秤（中国广东IKEME）。我们分析了五个不同磁场矢量（横向、尾侧、头侧、矢状和前侧）、两种场强（0.1 T和0.08 T）以及长鞘的五种导管延伸配置对所获得CF值的影响。此外，我们使用两种模型比较了MAGiC导管和THERMOCOOL® RMT导管的CF值。
MAGiC导管的测量CF值范围为5.62至21.61 g（0.1 T）和3.63至20.74 g（0.08 T），并且因矢量而异。0.1 T时的CF高于0.08 T，值范围为9.32至21.61 g（0.1 T）和8.71至20.74 g（0.08 T）。在MAGiC与THERMOCOOL® RMT的模型I比较中，在28/30次测量场景中，MAGiC导管的CF显著更高（p < 0.001）。在模型II中，24/30个场景中的CF更高（p < 0.001）。
MAGiC导管在多个方向和导管延伸模型中均能提供始终如一的最佳CF值，在大多数情况下优于THERMOCOOL® RMT导管。
