摘要
目的研究超声磨钻参数设置对牛椎体磨削部位最高温度和穿透时间的影响,确定最佳参数,实现脊柱手术中基于机器人辅助的高效安全的超声磨钻磨削。方法将5头成年牛胸腰椎标本(T10-L6)用切割机切成10 mm厚切片,共获得50个切片,其中30个切片用于松质骨实验,20个切片用于皮质骨实验。松质骨实验中,将切片随机分为3组,每组10个切片,对应不同的进给速率(0.8、1.6和2.4 mm/s)。在切片的松质骨部位用不同的输出功率进行9次磨削,输出功率从20%(48 W)增加到100%(120 W)。皮质骨实验中,将切片随机分为2组,每组对应不同的进给速率(0.8 mm/s和1.6 mm/s)。在切片皮质骨部位进行4次磨削,分别对应输出功率从70%(84 W)增加到100%(120 W)。实验在室温25℃下进行,用红外热像仪记录磨削部位的最高温度,并记录穿透时间。比较松质骨及皮质骨在不同输出功率和不同进给速率下磨削最高温度及穿透时间的变化情况。结果相同进给速率时松质骨磨削部位的最高温度随着输出功率的增加而降低,输出功率120 W时最高温度同24 W时差异有统计学意义(61.2℃±9.4℃比70.9℃±5.7℃、59.2℃±7.1℃比69.5℃±10.7℃、55.5℃±5.5℃比69.2℃±9.3℃,均P<0.05)。在相同输出功率下,不同进给速率的最高温度差异均无统计学意义(均P>0.05)。皮质骨在0.8 mm/s进给速率下,最高温度随输出功率增加而降低,输出功率120 W时最高温度显著低于84 W时(P=0.048);但在1.6 mm/s进给速率下,增加输出功率不能显著降低最高温度(P>0.05)。在相同输出功率情况下,进给速率1.6 mm/s时的最高温度比0.8 mm/s时均显显降低(均P<0.05)。松质骨磨削穿透时间不随输出功率增加而显著缩短(均P>0.05),但随进给速率增加而减少(均P<0.05)。皮质骨在0.8 mm/s进给速率下,输出功率增加不能使穿透时间缩短(P>0.05);1.6 mm/s进给速率下,输出功率120 W时穿透时间最短,显著低于
Objective To investigate the effect of ultrasonic parameter settings on maximum temperatures in the drilling site and penetration time and determine the most suitable parameters for efficient and safe robot-based ultrasonic bone drilling in spinal surgery.Methods Five adult bovine thoracic and lumbar vertebrae specimens(T10-L6)were cut into 10 mm thick slices.A total of 50 slices were obtained.Among them,30 and 20 slices were used for cancellous bone experiments and cortical bone experiments,respectively.In the cancellous bone experiment,the slices were randomly divided into three groups,corresponding to different feed rates of 0.8 mm/s,1.6 mm/s,and 2.4 mm/s,respectively,with 10 slices in each group.The cancellous part of each slice was drilled 9 times with different output powers from 20%(48 W)to 100%(120 W).In the cortical bone experiment,the slices were randomly assigned into two groups,corresponding to a different feed rate(0.8 mm/s and 1.6 mm/s).Drilling was performed on the cortical part of each slice 4 times with different output power,which increased from 70%(84W)to 100%(120 W).All experiments were conducted at room temperature of 25℃.Maximum temperature and penetration time were recorded.The maximum grinding temperature and penetration time of cancellous bone and cortical bone under different output power and feed rate were compared.Results At the same feed rate,the maximum temperature of the cancellous bone decreased as output power increased.There were statistically significant differences in the maximum temperature between the output powers of 120 W and 24 W under different feed rates(61.2℃±9.4℃vs 70.9℃±5.7℃,59.2℃±7.1℃vs 69.5℃±10.7℃,55.5℃±5.5℃vs 69.2℃±9.3℃,all P<0.05).At the premise of the same output power,there was no significant difference in the maximum temperature among different feed rates(all P>0.05).At the feed rate of 0.8 mm/s,the maximum temperature of cortical bone decreased as the output power increased.The maximum temperature at the output power of 120 W wa
作者
郎昭
王祺龙
何达
刘亚军
田伟
Lang Zhao;Wang Qilong;He Da;Liu Yajun;Tian Wei(Department of Spine Surgery,Beijing Jishuitan Hospital,Beijing 100035,China)
出处
《中华医学杂志》
CAS
CSCD
北大核心
2022年第5期370-377,共8页
National Medical Journal of China
基金
北京市自然科学基金-海淀原始创新联合基金(L192048)
北京市优秀人才培养资助项目(2017000021469G226)。
关键词
脊柱
机器人
超声磨钻
最高温度
穿透时间
Spine
Robotics
Ultrasonic drill
Maximal temperature
Penetration time
