Design of a self-centring drill bit for orthopaedic surgery: A systematic comparison of the drilling performance

Wei Bai; Pengfei Pan; Liming Shu; Yuhang Yang; Jianguo Zhang; Jianfeng Xu; Naohiko Sugita

doi:10.1016/j.jmbbm.2021.104727

Design of a self-centring drill bit for orthopaedic surgery: A systematic comparison of the drilling performance

J Mech Behav Biomed Mater. 2021 Nov:123:104727. doi: 10.1016/j.jmbbm.2021.104727. Epub 2021 Aug 25.

Authors

Wei Bai¹, Pengfei Pan², Liming Shu³, Yuhang Yang⁴, Jianguo Zhang¹, Jianfeng Xu⁵, Naohiko Sugita⁶

Affiliations

¹ State Key Lab of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen, 518000, China.
² State Key Lab of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
³ Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 1138656, Japan. Electronic address: l.shu@mfg.t.u-tokyo.ac.jp.
⁴ Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL, 33124, United States.
⁵ State Key Lab of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China. Electronic address: jfxu@hust.edu.cn.
⁶ Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 1138656, Japan.

PMID: 34492615
DOI: 10.1016/j.jmbbm.2021.104727

Abstract

Bone drilling is an indispensable and demanding operation among many orthopaedic operations. A dedicated drill bit that can achieve low-trauma and self-centring drilling is in urgent need. In this study, a three-step orthopaedic low-traumatic drill bit design was proposed. In order to evaluate the drilling performance of the proposed drill, comprehensive comparison tests were carried out with various commercial medical drills in terms of skiving force, thrust force, temperature rise, and surface quality. The experimental results show that the proposed three-step drill design with the optimal point angle, a small chisel edge, transition arc and web thinning can obtain lower and more stable thrust force, slighter bending force, smaller temperature rise, and higher hole quality compared with the commercial drill bits. The proposed drill shows satisfactory drilling performance and has great application potential in clinical surgery.

Keywords: Bone drilling; Commercial drill; Cortical bone; Low trauma; Self-centring; Temperature.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Bone and Bones
Mechanical Phenomena
Orthopedic Procedures*
Orthopedics*
Temperature