Design, Analysis, and Manufacturing of a Bone Cutting Ultrasonic Horn-Tool and Verification ...

Ho is one of the main components of ultrasonic cutting systems. The most important characteristics of the ho design are its resonant frequency and amplification factor. Closed-form equations can be used only for the design of simple hos and do not apply to more complex shapes like surgical tools. This paper presents a designing technique based on the finite element method and experimental tests. It can improve conventional design methods and facilitate designing a high performance surgical ultrasonic ho for bone cutting tools. The new and complex bone cutting tool has both the knife-edge and toothed-edge which could cut the bone easily and accurately. The investigations of cutting forces applied to the tool edges show less force in the toothed edge than the knife edge.