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Ankle Alignment Device Garrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez Overseeing Adviser: Dr. William Devries

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Ankle Alignment Device

Garrett Sauter BMETrey Kendall ME

Engineer Adviser: Dave MartinezOverseeing Adviser: Dr. William Devries

Page 2: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

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.

Page 3: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

Approximately 550,000 anklefractures occur in the USeach year.

TibiaMedial malleolus

Introduction

Page 4: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

Problems with the CurrentSolution

• Bone clamp– Holds fractured piece in

place while guide wire isput in place

Page 5: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

Current Solution

• Guide wires• Bone screws

Page 6: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

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

Page 7: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

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

Page 8: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 9: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 10: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 11: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 12: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 13: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 14: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

CAD Design

Page 15: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

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.

Page 16: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

Stakeholders

• Medical Device Companies• Orthopedic Surgeons• Patients

Page 17: Ankle Alignment Device - School of Engineeringresearch.vuse.vanderbilt.edu/srdesign/2009/group21/BME273march[1].pdfGarrett Sauter BME Trey Kendall ME Engineer Adviser: Dave Martinez

Future Work

• Observe surgery• Finalize solution designs with project

mentors• Finalize CAD design• Construct working model

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