基于并口的浅表组织聚焦超声治疗系统安全监控方法研究

目的：探讨高强度聚焦超声（HIFU）治疗设备的安全监控方法，消除在使用时对人体产生的潜在危险，提高其安全性和有效性。方法：通过分析HIFU设备“浅表组织高强度聚焦超声治疗系统”的系统特征和失效危险，设计基于增强型并行端口（EPP）模式的并口监控模块，使得数据能够在PC机和下位机间双向流动，并设计上位机看门狗和实时功率监测模块。结果：监控模块能够及时处理各种异常状况，保持系统的安全稳定运行。防止由于上位机故障或线缆故障导致的控制失效，并且上位机程序能够实时监控功率源实时输出功率。结论：通过分析HIFU设备的系统特征和失效危险，针对性地设计了基于EPP模式的监控模块，有效的提高了超声治疗系统的可靠性和安全性。

Research on parallel port-based safety monitor method for high intensity focused ultrasound therapeutic system

Objective： High Intensity Focused Ultrasound （HIFU） is classified as the third category medical instruments, which means it require much more attention on its safety to patient. Methods： To achieve this goal, a safety monitor system was applied on ＂High Intensity Focused Ultrasound therapeutic equipment for Shallow tissue＂. To design parallel port-based safety monitor method for high intensity focused ultrasound therapeutic system and make the bidirectional data flow. Results： By using parallel computation of FPGA, the safety monitor independently monitor several modules of the ＂Ultrasound therapeuticequipment＂, and handies real-function. A new-E-PP-Parallel-port basic- intelligent watctlclog was introducing to monitor PC working state. Conclusion： The safety monitor system enhances the safety and reliability of the equipment, and provides helpful information for malfunction diagnose.