Low Voltage Piezoelectric Bone Sculptor

Mechanical Engineering-Engineering Mechanics Capstone Senior Design Team

Low Voltage Piezoelectric Bone Sculptor

 

Team Members: James Berry, Electrical Engineering; Michael

Braun, Computer Engineering; Alexandra Cereska

and Janelle Rupkalvis, Biomedical Engineering;

Lee Southerton and Eric Wilkening, Mechanical

Engineering

Advisor: Radheshyam Tewari, Mechanical Engineering-

Engineering Mechanics

Sponsor: Stryker Instruments

 

Project Overview

We have partnered with Stryker Instruments to

address the market need for improved bone

resection instrumentation by developing a proofof-

concept prototype bone resection device, the

JamJel. The JamJel operates at a sub-ultrasonic

frequency and employs a piezoelectric actuator, or

stack configuration to produce oscillatory motion of

a cutting accessory. Piezoelectric stacks generate

high force, are compact in size, and enable

precise longitudinal displacement control by the

user. The design incorporates three piezoelectric

stacks arranged in a triangular formation around a

pivot plate. Mechanical leverage amplifies the 90

μm piezoelectric stack displacement, permitting

longitudinal, transverse and rotary motion at the

cutting accessory tip, singly or in combination.

Done