A SELF MONITORING, DISPOSABLE SHOCK WAVE HYDROPHONE

本工作的目的是发展一种宽带、定量冲击波 压电材料聚偏氟乙烯水听器 （PVDF）。该装置的新颖方面包括低成本的一次性 水听器元件，以显着降低每次拍摄成本，和一个自我， 监测系统，其在水听器元件已经 失去了一定的准确性，应该更换。这些水听器将 旨在满足精确、宽带测量的要求 碎石机领域，适用于定量生物物理研究或 食品和药物管理局提交的资料。的一次性功能， 水听器系统将使研究、质量 保证和监管提交。项目的第一阶段 将侧重于：l）研究冲击波暴露对 2）发展宽带水听器， 水听器监测系统; 3）改进快速，可靠 与一次性水听器元件的电连接;以及4） 研究一次性元件的低成本制造技术。 当在第二阶段和第三阶段充分开发时， 水听器将成为测量的新标准参考， 碎石系统评价，适用于临床质量 保证和碎石机相互比较。

The purpose of this work is to develop a wideband, quantitative shock wave hydrophone made of the piezoelectric material polyvinylidene difluoride (PVDF). The novel aspects of this device include a low-cost disposable hydrophone element to significantly reduce the per-shot costs, and a self- monitoring system that informs the user when the hydrophone element has lost a specified accuracy and should be replaced. These hydrophones will be designed to fulfill the requirements for accurate, wideband measurement of lithotripter fields, suitable for quantitative biophysical research or Food and Drug Administration submissions. The disposable feature of the hydrophone system will make it cost effective for research, quality assurance and regulatory submissions. The Phase I portion of the project will focus on: l) investigating the effect of shock wave exposure on hydrophone elements; 2) developing the wideband preamplifier and hydrophone monitoring systems; 3) refining the means for rapid, reliable electrical connection to the disposable hydrophone elements; and 4) investigating low-cost fabrication techniques for the disposable elements. When fully developed under Phases II and III, the Disposable Lithotripsy Hydrophone will represent a new standard reference for the measurement and evaluation of lithotripsy systems, applicable to clinical quality assurance and lithotripter inter-comparison.