improved fine needle aspiration biopsy team: janie goldsworthy, kristi hinner, nick kortan, crystal...
TRANSCRIPT
Improved Fine Needle Aspiration Biopsy
Team: Janie Goldsworthy, Kristi Hinner, Nick Kortan, Crystal MarshekClient: Dr. Elizabeth BurnsideAdvisor: John Webster
Problem Statement
GOAL: To modify the needle used during a Fine Needle Aspiration (FNA) procedure. The modification should not drastically change the FNA procedure and still increase the amount of tissue removed for cytological testing. It should also minimize the time (by collecting an adequate sample size on the first attempt) and discomfort caused to the patient during the procedure.
What is FNA?
Technique used to extract cells; no incision neededSeveral insertions are usually required to ensure an adequate sample sizeSamples are sent to pathologist to be analyzed National Breast Cancer Center,
http://www.NBCC.org
Fine Needle Aspiration (FNA)
A.D.A.M., http://www.adam.com
Product Design Specifications
Removes adequate number of cells for diagnosis. Should not cause more discomfort than current FNA procedure. Constrained to standard 20-25-gauge needle, client prefers 23-gauge.
Micro-Drill Bit Insert
Draws cells up drill fluting into needleFits inside 23-gauge needle Outer Diameter: 0.0145 inches
Currently too short Length: approximately 1 inch Needs to be lengthened
Easy to obtain
Needle Manufacturer
Drill Bit ContactsResponsesWork in Progress
ME Shop/Process
WeldingSolderingBrazing
Sample Size
Comparison Old vs. New Techniques
Histological analysisCell Quantification
Testing
Tissues AvailableFuture Testing
Future Work
Prototype developmentResearch into appropriate materials to be used (stainless steel, Co-Cr, Ti)Develop protocol for quantifying testingTest on tissue similar to breast tissueQuantify sample needed for cytological evaluation