Intravascular microcatheters steered by conducting polymer actuators
Intravascular microcatheters steered by conducting polymer actuators
复制标题
由导电聚合物致动器操纵的血管内微导管
DOI：
10.1109/iembs.1996.646497
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
D. De Rossi
中科院分区：
文献类型：
--
作者：
A. Della Santa;D. De Rossi
提出了为实现可操纵微导管而设计的导电聚合物/固体聚电解质驱动结构。他们利用了当离子物质与周围的固体聚电解质交换时发生的/spl pi/-电子共轭导电聚合物的机电化学现象。控制材料常数的实验确定、复合材料的建模以及圆柱形结构机械性能的有限元计算机模拟为有效可操纵的小型化导管的可行性提供了有利的指示。对2-3 Fr内窥镜尖端的模拟表明，可以获得约30的弯曲度和约4 gr的远端力，该装置将具有血管内探查和类似机器人的诊断或外科微创操作的巨大潜力。
Conducting polymer/solid polyelectrolyte actuating structures designed for realising steerable microcatheters are presented. They exploit the electromechanochemical phenomena of /spl pi/-electron conjugated conducting polymer occurring when ionic species are exchanged with the surrounding solid polyelectrolyte. Experimental determination of the governing material constants, modelling of the composite material and finite element computer simulations of the mechanical properties of cylindrical structures provide favourable indication about the feasibility of effective steerable, miniaturised catheters. Simulations about 2-3 Fr endoscope tips show that a degree of bending of about 30 and a developed distal force of about 4 gr can be obtained, The device would possess high potentialities for intravascular explorations and robotic-like diagnostic or surgical minimally invasive operations.