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LEC DEVICEGroup Members:
Kevin MihelcAmine Hallab
Jen BaciorHiroki Meguro
Advisors:Kelly Dympna, MD John Patzer, PhD
1 February 2005
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Project Overview
• Intended Use: Open Liver Biopsy
• Combines 3 Functions1. Removal of Tissue
2. Cauterization
3. Biopsy Tissue Protection
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LEC DEVICE
17 cm
Blades
2 cm
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Individual Responsibilities
• Blade Redesign
• Testing Protocol
• Design History File Update
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Secondary Blade Design
• Remove Closed Faces
1. Facilitate Easy Removal of Tissue Sample
2. Simplify Fabrication Process
• Round Triangular Edges
1. Wedge Point is difficult to cauterize
2. Simplify Fabrication by removing joints
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Testing Protocol
• Preliminary Testing Using CosmosWorks - Examine stresses subjected on device
• Discarded Livers from Animal Research Study 1. Cutting Ability
2. Cauterization Effectiveness
3. Cauterization Time
4. Heat and Current Protection
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Testing Protocol (Cont.)
• Sterilization Test
-Multiple Autoclave Cleansings
• User Survey
1. Ease of Operation
2. Comfortableness
3. Comparison to Previous Biopsy Technique
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Design History File
- Revise and Update DHF to ensure proper
representation of the LEC tool
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Upcoming Milestones
• Functional Computer Prototype – 2 weeks
• Submit for Fabrication – 2 weeks
• Full Testing Completed – 4/7/05
• Revised Design History File – 4/7/05
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•Mark Gartner
• Department of BioEngineering
•LEC Group Members
•John Patzer, PhD
• Kelly Dympna, MD
•Stephan Safta and Richard Miller
Acknowledgements