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Non-radiative & Precise Navigation System for Distal Locking in Intramedullary Nailing

Non-radiative & Precise Navigation System for Distal Locking in Intramedullary Nailing
Translated Title
수내못고정술의 원거리 결합을 위한 방사선을 사용하지 않는 고정밀 네비게이션 시스템
Choi, Jae Suk
DGIST Authors
Choi, Jae Suk; Lee, Jung Hyup; Je, Min Kyu
Lee, Jung Hyup
Je, Min Kyu
Issue Date
Available Date
Degree Date
2017. 2
Intramedullary nailingNon-radiationHigh-accuracyLaser guidanceOrientation measurement수내못고정술무방사선고정밀도레이저 가이드실시간 드릴링 각도 측정
Intramedullary nailing has been one of the most commonly used surgical procedure for treating long bone fracture in orthopedic surgeries. Intramedullary nailing consists of several procedures such as guide-wire insertion, reaming, nail insertion and distal locking. In particular, the distal locking has been known as one of the most challenging steps in this surgery. Because the nail is inserted and located in medullary canal so it is invisible to surgeon. For finding the position of nail and distal hole, in conventional method, surgeon uses large amount of radiography. In addition, while drilling and screw interlocking, since the nail is designed to have a longitudinal shape slightly bent by several millimeters so that it can conform to the bone canal shape, the exact position of the distal locking nail hole’s axes cannot be easily determined and the operating time becomes longer. This paper proposes a novel smart surgical navigation system for solving conventional limitations of intramedullary nailing. Using handle-integrated Laser guidance module, it can target the point onto the skin which indicates invisible distal nail hole. Owing to the characteristic of line-laser intersection, laser guidance module has a significant advantage of self-laser emitting toward distal nail hole without radiography. Additionally, through its fixation mechanism, the proposed laser guidance system does not need an additional tracking device for compensating disturbances from external impact. Not only to distal hole localization, for guiding the direction toward distal nail hole to surgeon while drilling, we proposed real-time drilling orientation measurement system. Handle and Drill integrated inertial sensors and Bluetooth communication module provide real-time angle data so that drill’s angle error toward center of distal nail hole is calculated in real-time. Our systems featured removing usage of fluoroscopic image and low-cost compared to conventional systems. ⓒ 2017 DGIST
Table Of Contents
I. INTRODUCTION 1 -- 1.1 The introduction of Intramedullary Nailing 1 -- 1.2 The necessity of Navigation system in Intramedullary Nailing Operation 6 -- 1.3 Research Goal 8 -- 1.4 Thesis Organization 9 -- II. CONVENTIONAL NAVIGATION SYSTEMS FOR INTRAMEDULLARY NAILING OPERATION 10 -- 2.1 Radiography based navigation systems for obtaining accuracy 10 -- 2.2 Low radiation targeted navigation systems 13 -- III. DESIGN OF PROPOSED NAVIGATION SYSTEM 16 -- 3.1 Handle-integrated line-laser markers 16 -- 3.1.1 Methodology 16 -- 3.1.2 Axis alignment 20 -- 3.1.3 Novelty 22 -- 3.2 Drilling direction guidance smart module 22 -- 3.2.1 Methodology 22 -- 3.3 Interface circuit design 25 -- 3.3.1 Circuit design consideration 25 -- 3.3.2 Practical drill alignment method 26 -- 3.3.3 Drill vibration effect consideration 28 -- 3.4 Orientation estimation using complimentary filter 28 -- IV. EXPERIMENT RESULTS 30 -- V. CONCLUSION AND DISCUSSION 35 -- 5.1 Conclusion 35 -- 5.2 Discussion 35
Information and Communication Engineering
Related Researcher
  • Author Lee, Jung Hyup Integrated Nano-Systems Lab
  • Research Interests Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
Department of Information and Communication EngineeringThesesMaster

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