摘要
根据徽创介入手术主动导管尺寸微小、空间有限不能容纳过多导线的结构特点,提出了一种矩阵式驱动控制系统,使用最少的导线完成对多个SMA驱动器的控制。利用单片机输出的脉宽调制(PWM)信号对脉冲电流进行调节和多个驱动器之间的相互配合作用,实现主动导管的导向动作。
As it is impossible for an active catheter with a very small space to accommodate overmany lead wires in minimally-invasive surgery, a matrix network system is presented, in this paper, to control SMA actuators using minimum lead wires. Pulse current is adjusted by pulse width modulation (PWM) signals from the single-chip processor. In addition, multiple SMA actuators' cooperation helps the active catheter to succeed in guiding motion.
出处
《中国医疗器械杂志》
CAS
2006年第6期416-418,430,共4页
Chinese Journal of Medical Instrumentation
基金
黑龙江省科技攻关重点资助项目(GC04A510)。
关键词
主动导管
形状记忆合金
矩阵式控制系统
脉宽调制
active catheter, shape memory alloy, matrix actuation system, pulse width modulation (PWM)