测试新鲜猪股骨干钻削进给力  

Testing of drilling feed force on fresh porcine femur

作　　者：李长树[1,2] 白宇哲 孔祥雪[1] 陈兰[1] 李鉴轶[1,3] 杜志江[4] 谢叻[5] 唐雷[1,3] 

机构地区：[1]南方医科大学人体解剖教研室,广州510515 [2]深圳市平乐骨伤医院骨关节病科,深圳518010 [3]南方医科大学附属北滘医院,钟世镇院士工作室,佛山528311 [4]哈尔滨工业大学机器人研究所,哈尔滨150080 [5]上海交通大学国家数字化制造技术中心,上海200030

出　　处：《医用生物力学》2014年第6期560-566,共7页Journal of Medical Biomechanics

基　　金：国家自然科学基金资助项目(61190120,61190122,61190123)

摘　　要：目的 采集新鲜猪股骨干不同骨质层和骨段的钻削进给力数据,为骨科虚拟现实手术系统钻削力反馈信号的输出提供依据。方法 改装万能材料试验机和手持可调速电钻（φ5.0 mm钻头）,构建生物骨骼钻削性能参数采集系统,分别以转速n =500,800,1 200 r/min和进给速度v=30,50,70 mm/min采集6具新鲜成熟猪股骨干162个标记点的钻削进给力f,分析其与相应组织和部位的关系。结果 新鲜猪股骨干同一标记点双侧骨皮质处进给力最大（fmax=103.63 ～142.59 N）,髓腔处最小（接近于0）,股骨干中段进给力（f4,5,6=124.69N）较两端（f1,2,3,7,8,9=121.84 N）大;当v=30 mm/min、n=1 200 r/min时,钻削进给力最小（fmin=106.04N）;当v=70 mm/min、n=500 r/min时,钻削进给力最大（fmax=139.84 N）。结论 改装的生物骨骼切削性能参数采集系统能有效采集生物骨骼的钻削进给力数据;骨骼钻削进给力与骨质的组织结构、电钻转速及进给速度有密切关系,其中骨质结构越密、电钻转速越小、进给速度越大,骨骼钻削进给力越大,反之越小。实验所获得新鲜猪股骨干钻削进给力数据及其变化趋势,可为虚拟骨科手术系统力反馈输出信号设置提供依据。Objective To record the drilling feed force on different layers of fresh porcine femur, so as to provide reference for collecting and outputting the feedback signals of drilling feed force for orthopedic virtual surgery sys- tem. Methods The biological bone drilling feed force testing system was established by modifying the universal material testing machine and adjustable speed electric drill （drill bit Ф5.0 mm）. The feed forces on 6 fresh por- cine femoral shafts with a total of 162 drilling markers were collected at 3 different rotate speeds （ n = .500, 800, 1 200 r/min） and 3 feed speeds （ v=30, 50, 70 mm/min）, and their variation with corresponding tissues and lo- cations were also analyzed. Results At the same drill marker of the fresh porcine femur, the drilling feed force on bilateral cortical bone was the largest （ fmax= 103.63 -142.59 N）, while that on marrow cavity was the smallest, which was almost close to zero, and the drilling feed force on the middle part （f4,5,6= 124.69 N） was larger than that at two ends （f1,2,3,7,8.9 = 121.84 N） ; the drilling feed force was smallest （f= 106.04 N） at v = 30 mm/min, n =1 200 r/min, while the largest drilling feed force （ fmax = 139.84 N） appeared at v = 70 mm/min, n = 500 r/min. Conclusions The modified drilling feed force testing system could efficiently collect the biological bone drilling data. The drilling feed force had a close relationship with bone structure, feed speed and rotate speed of electric drill as well. A larger bone density, smaller rotate speed of electric drill and higher feeding speed would lead to a lar- ger drilling feed force, and vice versa. The accurate drilling feed force data and its variation tendency on porcine femoral obtained in this experiment could provide a reliable basis for force-feedback signal output in the virtual orthopedic surgery system.

关 键 词：猪股骨干 虚拟手术 钻削 力反馈 进给力 

分 类 号：R318.01[医药卫生—生物医学工程]