ankle alignment device - school of...

Ankle Alignment Device

Garrett Sauter BMETrey Kendall ME

Engineer Adviser: Dave MartinezOverseeing Adviser: Dr. William Devries

Advisers

Dr. William DeVries- Orthopedic surgeon inClarksville, TN. Member of TennesseeOrthopedic Alliance and specializes in jointreplacement and sports medicine.

Dave Martinez- Engineering consultantemployed by Zimmer, a company thatmanufactures joint replacement and orthopedicsurgery products.

Approximately 550,000 anklefractures occur in the USeach year.

TibiaMedial malleolus

Introduction

Problems with the CurrentSolution

• Bone clamp– Holds fractured piece in

place while guide wire isput in place

Current Solution

• Guide wires• Bone screws

New Solution Requirements• Clamp securely affixes to tibia and holds

fractured piece in place• Device can be adjusted to align the guide

wires and screws• Spatial requirement- device must function

within the surgical envelope.• Easy to use• Sterilizable

Design SolutionMaterial- Stainless steel has a yield strengthof 520MPa and can be easily sterilized.

Cost- Product will be reusable, target price is$100.

Size constraint- The product fullyuncompressed should not exceed 3 inchesand 3/4 inch wide

CAD Design

CAD Design

CAD Design

CAD Design

CAD Design

CAD Design

CAD Design

Project Goals

• To create an CAD model of the ankle alignmentdevice

• To create a functioning prototype of the device• To offer an alternative method to medial

malleolus plate and screw methods to affix thefractured segment to the tibia.

Stakeholders

• Medical Device Companies• Orthopedic Surgeons• Patients

Future Work

• Observe surgery• Finalize solution designs with project

mentors• Finalize CAD design• Construct working model