A novel ultrasonically-actuated tool has been designed and fabricated to allow safe and deliberate surgical incision. Though the tool has been designed specifically for ultrasonic cutting of tissues, modifications to its structure and material properties may lead to its use in other medical applications. The design comprises a simple geometry with sharp tip and utilises a length thickness extensional (LTE) mode sample of the new single crystal piezoelectric material, PMN-PT, to generate longitudinal motion with velocity > 120 mm/s at 80 kHz. The paper details the design and characterisation process of the tool including the necessary electrical circuitry required to achieve the optimum results.
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机译：已经设计和制造了一种新颖的超声致动工具，以允许安全且有意的手术切口。尽管该工具是专门为超声切割组织而设计的，但对其结构和材料特性的修改可能会导致其在其他医疗应用中的使用。该设计包括一个具有尖锐尖端的简单几何形状，并使用了新型单晶压电材料PMN-PT的长度厚度扩展（LTE）模式样本，以在80 kHz时产生大于120 mm / s的纵向运动。本文详细介绍了该工具的设计和表征过程，包括实现最佳结果所需的必要电路。
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