Design of a Magnetic Resonance Imaging Guided Magnetically Actuated Steerable Catheter
Design of a Magnetic Resonance Imaging Guided Magnetically Actuated Steerable Catheter
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DOI：
10.1115/1.4036095
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发表时间：
2017-06-01
影响因子：
0.9
通讯作者：
Cavusoglu, M. Cenk
中科院分区：
文献类型：
--
作者：
Liu, Taoming;Poirot, Nate Lombard;Cavusoglu, M. Cenk
本文介绍了用于左心房房颤消融的磁共振成像 (MRI) 驱动可操纵导管的设计优化。导管原型建立在聚合物管材上，嵌入了载流电磁线圈。通过控制流过线圈的电流，原型可以偏转到所需位置。设计目标是开发一个能够成功完成消融任务的原型。为了完成任务，导管需要能够到达医生在腔室上选择的一组所需目标，并与腔室表面保持稳定接触。设计过程基于通过评估自由空间中的工作空间来最大化导管的转向性能。通过对具有真实心房几何形状的左心房虚拟模型进行消融干预模拟来验证所选设计。该验证表明原型可以达到消融干预所需的每个目标，并对腔室提供适当的接触力。
This paper presents design optimization of a magnetic resonance imaging (MRI) actuated steerable catheter for atrial fibrillation ablation in the left atrium. The catheter prototype, built over polymer tubing, is embedded with current-carrying electromagnetic coils. The prototype can be deflected to a desired location by controlling the currents passing through the coils. The design objective is to develop a prototype that can successfully accomplish the ablation task. To complete the tasks, the catheter needs to be capable of reaching a set of desired targets selected by a physician on the chamber and keeping a stable contact with the chamber surface. The design process is based on the maximization of the steering performance of the catheter by evaluating its workspace in free space. The selected design is validated by performing a simulation of an ablation intervention on a virtual model of the left atrium with a real atrium geometry. This validation shows that the prototype can reach every target required by the ablation intervention and provide an appropriate contact force against the chamber.