【摘要】 本研究阐述了用于眼科超声诊断的AB型探头的设计原理和工程实现。设计中提出用步进电机作B型探头扫描的执行器件,以多级高精度细分驱动器激励,用以消除低频振荡的方案,并通过聚四氟伞齿耦合,形成机电声一体的高性能眼科扇形超声扫描探头。对于A型生物测量探头,通过在声束定向、测量位置和声速设置等方面的设计思想,有效提高测量精度。配以上述AB型探头的眼科超声诊断仪已愈3000台,完全可以满足临床要求。更多还原

【Abstract】 The design principles and its realization of a A/B mode probe for ophthalmology ultrasound were introduced in this paper. In order to eliminate low frequency oscillation, a micro step motor, which was stimulated by a multi-level and high precision subdivisional driver, was used as a scanning device. Coupling the device with PTFE common bevel gear, a B mode probe was formed integrating mechanics, electrics and ultrasound. For an A mode biometric probe, ultrasonic beam orientation, measuring position and speed setting ensured the precision of the measurement. More than 3000 ophthalmology ultrasound instruments used this kind of A/B mode probes. It has been showed that these probes meet the clinical expectations.更多还原