研究一种双极活体软组织高频焊接吻合系统,解决目前手术应用的激光法和超声波法软组织焊接设备昂贵、吻合时不能保证连接强度、用焊药会导致明显炎症反应的问题。以AVR单片机为控制芯片,预设不同吻合模式的安全输出功率,根据检测反馈值...研究一种双极活体软组织高频焊接吻合系统,解决目前手术应用的激光法和超声波法软组织焊接设备昂贵、吻合时不能保证连接强度、用焊药会导致明显炎症反应的问题。以AVR单片机为控制芯片,预设不同吻合模式的安全输出功率,根据检测反馈值对功率补偿以优化高频控制数学模型及算法,实现软组织安全可靠吻合。然后采用QA-ES II电刀分析仪分析测试,进行动物实验。结果表明该系统3个工作模式输出功率相对误差<5%,高频漏电流<21 m A,符合各项标准要求。在普通腹部、肺部、肝脏、肠道吻合、血管闭合等大部分外科手术出血量少,具有无需缝合材料、无针创、不留残余缝隙,弱炎症反应、操作简单等优点,恢复效果更好。其实现可为人体软组织高频焊接设备国产化实现及其临床应用奠定基础。展开更多
A schematic to make the spectra of the exterior noise of high speed railway was put forward. The exterior noise spectrum was defined based on the characteristics of the high-speed train exterior noise. Its characteris...A schematic to make the spectra of the exterior noise of high speed railway was put forward. The exterior noise spectrum was defined based on the characteristics of the high-speed train exterior noise. Its characteristics considered here include identifying the exterior main sources and their locations, their frequency components including the Doppler effect due to the noise sources moving at high speed, the sound field intensity around the train in high-speed operation, the sound radiation path out of the train, and the pressure level and frequency components of the noise at the measuring points specified by the International Organization for Standardization(ISO). The characteristics of the high-speed train exterior noise of the high speed railways in operation were introduced. The advanced measuring systems and their principles for clearly indentifying the exterior noise sources were discussed in detail. Based on the concerned noise results measured at sites, a prediction model was developed to calculate the sound level and the characteristics of the exterior noise at any point where it is difficult to measure and to help to make the exterior noise spectrums. This model was also verified with the test results. The verification shows that there is a good agreement between the theoretical and experimental results.展开更多
文摘研究一种双极活体软组织高频焊接吻合系统,解决目前手术应用的激光法和超声波法软组织焊接设备昂贵、吻合时不能保证连接强度、用焊药会导致明显炎症反应的问题。以AVR单片机为控制芯片,预设不同吻合模式的安全输出功率,根据检测反馈值对功率补偿以优化高频控制数学模型及算法,实现软组织安全可靠吻合。然后采用QA-ES II电刀分析仪分析测试,进行动物实验。结果表明该系统3个工作模式输出功率相对误差<5%,高频漏电流<21 m A,符合各项标准要求。在普通腹部、肺部、肝脏、肠道吻合、血管闭合等大部分外科手术出血量少,具有无需缝合材料、无针创、不留残余缝隙,弱炎症反应、操作简单等优点,恢复效果更好。其实现可为人体软组织高频焊接设备国产化实现及其临床应用奠定基础。
基金Project(2682013BR009)supported by the Fundamental Research Funds of the Central Universities,ChinaProject(2011AA11A103-2-2)the National High-Technology Research and Development Program of China
文摘A schematic to make the spectra of the exterior noise of high speed railway was put forward. The exterior noise spectrum was defined based on the characteristics of the high-speed train exterior noise. Its characteristics considered here include identifying the exterior main sources and their locations, their frequency components including the Doppler effect due to the noise sources moving at high speed, the sound field intensity around the train in high-speed operation, the sound radiation path out of the train, and the pressure level and frequency components of the noise at the measuring points specified by the International Organization for Standardization(ISO). The characteristics of the high-speed train exterior noise of the high speed railways in operation were introduced. The advanced measuring systems and their principles for clearly indentifying the exterior noise sources were discussed in detail. Based on the concerned noise results measured at sites, a prediction model was developed to calculate the sound level and the characteristics of the exterior noise at any point where it is difficult to measure and to help to make the exterior noise spectrums. This model was also verified with the test results. The verification shows that there is a good agreement between the theoretical and experimental results.
