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新型导管可实现同步射频消融和光学相干反射测量。

Novel catheter enabling simultaneous radiofrequency ablation and optical coherence reflectometry.

作者信息

Herranz D, Lloret Juan, Jiménez-Valero Santiago, Rubio-Guivernau J L, Margallo-Balbás Eduardo

机构信息

Medlumics S.L, Ronda de Poniente 6, 2A-B, 28760 Tres Cantos, Spain.

Medlumics S.L, Ronda de Poniente 6, 2A-B, 28760 Tres Cantos, Spain ; Servicio de Cardiología Intervencionista, Hospital Universitario La Paz, Madrid, Spain.

出版信息

Biomed Opt Express. 2015 Aug 7;6(9):3268-75. doi: 10.1364/BOE.6.003268. eCollection 2015 Sep 1.

Abstract

A novel radiofrequency ablation catheter has been developed with integrated custom designed optics, enabling real-time monitoring of radiofrequency ablation procedures through polarization-sensitive optical coherence reflectometry. The optics allow for proper tissue illumination through a view-port machined in the catheter tip, thus providing lesion depth control over the RF ablation treatment. The system was verified in an in-vitro model of swine myocardium. Optical performance and thermal stability was confirmed after more than 25 procedures, without any damage to the optical assembly induced by thermal stress or material degradation. The use of this catheter in RF ablation treatments may make possible to assess lesion depth during therapy, thus translating into a reduction of potential complications on the procedure.

摘要

一种新型射频消融导管已被开发出来,它集成了定制设计的光学元件,能够通过偏振敏感光学相干反射测量法对射频消融手术进行实时监测。这些光学元件通过导管尖端加工的视口实现对组织的适当照明,从而在射频消融治疗中实现对病变深度的控制。该系统在猪心肌的体外模型中得到了验证。经过超过25次手术后,光学性能和热稳定性得到了确认,光学组件未因热应力或材料降解而受到任何损坏。在射频消融治疗中使用这种导管可能使在治疗过程中评估病变深度成为可能,从而减少手术中潜在并发症的发生。

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