Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, UK.
Med Eng Phys. 2011 Mar;33(2):234-9. doi: 10.1016/j.medengphy.2010.10.003. Epub 2010 Nov 1.
Bone drilling is widely used in orthopaedics and surgery; it is a technically demanding surgical procedure. Recent technological improvements in this area are focused on efforts to reduce forces in bone drilling. This study focuses on forces and a torque required for conventional and ultrasonically-assisted tool penetration into fresh bovine cortical bone. Drilling tests were performed with two drilling techniques, and the influence of drilling speed, feed rate and parameters of ultrasonic vibration on the forces and torque was studied. Ultrasonically-assisted drilling (UAD) was found to reduce a drilling thrust force and torque compared to conventional drilling (CD). The mechanism behind lower levels of forces and torque was explored, using high-speed filming of a drill-bone interaction zone, and was linked to the chip shape and character of its formation. It is expected that UAD will produce holes with minimal effort and avoid unnecessary damage and accompanying pain during the incision.
骨钻广泛应用于矫形外科和外科手术；它是一种技术要求很高的手术程序。该领域的最新技术改进集中在努力减少骨钻中的力。本研究侧重于传统和超声辅助工具穿透新鲜牛皮质骨所需的力和扭矩。使用两种钻孔技术进行了钻孔测试，并研究了钻孔速度、进给速度和超声振动参数对力和扭矩的影响。与传统钻孔（CD）相比，超声辅助钻孔（UAD）被发现降低了钻孔推力和扭矩。通过高速拍摄钻头-骨相互作用区域，探索了力和扭矩降低的背后机制，并将其与切屑形状及其形成方式联系起来。预计 UAD 将以最小的力产生孔，并避免在切口过程中造成不必要的损伤和伴随的疼痛。
