刚性物体的可引导超声波推进,基于一个聚焦的部门转换器阵列的循环压力调制
Wenyi Li1, Tingzhen Feng1, Tinghui Meng1
1School of Computer and Electronic Information, Nanjing Normal University, Nanjing 210023, China.
Ultrasonics
|September 18, 2024
概括
一种新的超声波方法使用声波辐射力 (ARF) 引导结石,提供精确,非侵入性治疗. 这种可操纵的超声波推进系统可增强石头通过,对脏损伤最小.
科学领域:
- 声学和生物医学工程
- 非侵入性医疗技术是一种非侵入性技术.
背景情况:
- 结石 (结石) 是一种普遍存在的尿道系统疾病,造成严重的社会负担.
- 传统的超声波石术在完全去除残留碎片方面存在局限性,并有可能损害脏.
- 聚焦超声波可以通过声波辐射力 (ARF) 以最小的损伤推动石头,但缺乏精确的方向控制.
研究的目的:
- 开发一种可引导的超声波推进方法,用于精确控制结石.
- 为了研究在刚性球体上的声波辐射力 (ARF),使用部门阵列传感器.
- 为了证明非侵入性的可行性,可引导的石头推进.
主要方法:
- 使用聚焦超声波传感器的部门阵列开发循环压力调制技术.
- 在基于声学散射原理的刚性球体上推导ARF.
- 实验验证使用一个8元部门阵列来推进钢球,并用高速摄像机捕捉轨迹.
主要成果:
- 石头上的声辐射力 (ARF) 随半径增加而增加,并且具有特定的轴向分布.
- 通过循环二元压力调制实现的倾斜推进,偏斜角度受阵列参数的影响.
- 在推进钢球的过程中,实验证明了mN级的ARF和12°的偏斜角度.
结论:
- 开发的循环压力调制方法使刚性物体的有效和灵活的可转向超声波推进成为可能.
- 这种方法提供了精确的控制,没有复杂的振幅/相位控制或高精度传感器运动.
- 促进在结石的非侵入性治疗中的实际应用.
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