the design of an in-vivo rotator cuff measuring tool project proposal kathleen bieryla, katie...
TRANSCRIPT
The design of an in-vivo rotator cuff measuring tool
PROJECT PROPOSAL
Kathleen Bieryla, Katie Fronczak, Martha Loehr, Eric Rainis
University of PittsburghSenior Design - BioE1160
Arthrometric, Inc.
Background
• Shoulder is the most injured joint in the body
• Rotator cuff tears are the most common shoulder injury
• Preferred method is arthroscopic surgery
Overview- Problem
• Surgical methods dependent upon tear dimensions
• Currently there is no tool available to measure these dimensions
Humerus
Scapula
Overview- Proposed Solution
• The Arthromeasure is a one-handed tool for surgeons to use during arthroscopic surgery in order to measure the extent of rotator cuff tears
• Provides accuracy as specified by the user
• Allows for correct repair techniques to be utilized
Project Goals
• The ultimate goal is to create a tool to meet surgeons’ needs
• High-level timing goals for 2004• February—Initial prototype
• March—Cadaveric testing
• April—Final product and grant proposal
Features & Benefits
• Convenient moving mechanism on the handle
• Provides desired accuracy• a: +/- 1 cm
• b: +/- 5 mm
• Gives surgeon an easy way to determine the best method of repair
Design Alternatives
• Digital output
• Disposable
• Push-button locking mechanism
• Dual wire design
• Caliper design
Competitive Analysis
• Currently, no tool is available
• A hook of known distance 3mm is used to estimate tear
• Strengths
• More accurate
• Tool specific for the problem
• Easy to use
Technology
• Solidworks: Solid modeling and structural analysis
• Swanson Center: Rapid prototyping process
• Arthroscopic system
Team/Resources
• MSRC• Patrick McMahon M.D.• Richard Debski Ph.D• Lab and equipment
• Swanson Center• Rapid prototyping process
• Bioengineering Department• Funding
• Limitations• Availability of materials
Team Responsibilities
Scheduling & external relations Quality systems
SolidWorks design
Physical testing
Structural testing
Testing protocols
Katie
B.
Katie
F.
Mar
tha
Eric
Current Status
• Met with surgeon
• Understood problem
• Initial SolidWorks model
• Initial design history file
• Established a working plan
Acknowledgements
• Dr. Patrick McMahon
• Dr. Richard Debski
• MSRC
• Department of Bioengineering, University of Pittsburgh