Vibration Reduction, Characterization of Drill bit and Femur Bone to Forces During Robotic-Assisted Drilling Using Model Soft Fixture Embedded with Pressurized-Air Damper

Safety and precision are highly crucial in orthopedic drilling operations, therefore, the study of vibration resistance is essential. Proper clamping of fractured bone may be difficult during surgical drilling since bone is surrounded by soft tissues, hence, to prevent this, a model clamping system embedded with regulated pressurized air balloon which serves as a damper was developed. Laser vibration sensor was attached to measure the reduced permissible signal resulted from the drilling at varying effector drill speeds. The finite element analysis of the vibration characteristics of both the drill and femur bone to deformation, stress and strain was obtained using ANSYS software. This proposed method will enhance the safety as well as reduce high possibility of complications due to uncontrolled cutting forces that cause extreme vibration during surgical drilling of bone.