Yamaguchi University, Tokiwadai 2-16-1, Ube, Yamaguchi, Japan.
Kunming University of Science and Technology, 727 South Jingming Road, Chenggong District, Kunming 650500, China.
Biomed Res Int. 2021 Mar 9;2021:5543520. doi: 10.1155/2021/5543520. eCollection 2021.
To improve the performance of the ultrasonic device during the endovascular operation, a scissor-type ultrasonic catheter device with compound vibration was developed. The heat generated by friction between the target and the device affects its coagulation mechanism while the actuator contacts the tissue. The scissor-type ultrasonic catheter device proposed in this study is expected to improve heat generation performance because it has the action of rubbing the object when it is pushed by combined vibration. In addition, since it is constructed by simple notch processing, it can be miniaturized and can be expected to be introduced into catheters. However, the observation of ultrasonic vibration during frictional heating is difficult, which is an issue for device design. In this paper, a thermal-structure coupling analysis was done using the finite element method to calculate the heat generation efficiency and evaluate its coagulation performance.
为了提高血管内手术中超声设备的性能，开发了一种具有复合振动的剪刀式超声导管装置。在致动器接触组织时，目标与设备之间的摩擦产生的热量会影响其凝血机制。本研究中提出的剪刀式超声导管装置有望提高发热性能，因为它在受到组合振动推动时具有摩擦物体的作用。此外，由于它是通过简单的缺口加工构造的，因此可以实现小型化，并有望引入导管中。但是，摩擦加热过程中超声振动的观察非常困难，这是一个设备设计方面的问题。在本文中，使用有限元法进行了热-结构耦合分析，以计算发热效率并评估其凝血性能。
