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TRANSCRIPT
Fabrication of a Hermetic Micro Stimulator
JESSE SINGH
ALFRED E. MANN INSTITUE
OF BIOMEDICAL ENGINEERING
UNIVERSITY OF SOUTHERN CALIFORNIA
BIONTM
HOW IT GOES TOGETHER
QUESTION !!
Small Volume
Very Long Service Life
High Voltage
Metal Feedthroughs
And how is it done presently……
Why is Packaging Critical ???
CURRENT ASSEMBLY TREE
CURRENT PACKAGING
Nd:YAG LASER
CO2 LASER Work Bench
Nd:YAG laser
He Leak Detector
He Back Fill Station
PROBLEMS ???
Batch Process
Multiple Stations
Multiple handing of a part
Mishandling
Contamination of parts
PROPOSED SOLUTION………
PROPOSED PACKAGING
NO CHANGE OF WORKSTATION
WHAT’S NEW ??
Continuous Process
Single Station Operation
One Time Handling of Parts
ASSEMBLY TREE FOR IWS
HOW WILL IT BE DONE
Synchronous Rotation
YAG Laser
Source &
Sighting Camera
Vacuu Chuck
To Helium Leak Detector
Lens/Mirror
Assembly
Integrated Work Station (IWS)
WELD SCHEDULE
7 TOTAL WELDS
CO2 WELDS
SYNRAD Model
48-2-28. J version.
28W Maximum O/P
10.6 0.3 micron wavelength
Power Stability 5%
Nd:YAG WELD
LuxStar100 by GSI Lumonics.
1.06 micron output wavelength.
0.012” min spot size.
Stabilized power output using “WeldPerfect”.
0.75mm/0.030”
Weld Spot Size: 0.3 mm/0.012”
1mm/0.040”
NOSE CONE
Slip fit over the Vacuum Chuck Head
Easy and Simple Operation
Glass Capillary
Nose Cone Vacuum
Chuck
VACUUM CHUCK
Leak Testing & Backfill Unit Integration
Reduced handing of the parts
Easy to use toggle clamps for Vacuum line
Simple Backfill for Inert Gas
Tube IN TO He Leak Detector
CONTROL SOFTWARE
Single Station PC control
Inbuilt Safety Interlocks
Critical Component Continuous Status Check
All Weld Parameters Automatically Recorded
Automatic Recording of He Leak Test Results
User Friendly Graphical User Interface
IMPROVEMENTS
No Change of Station
Continuous Production Line
Reduced Production Time
Increased Reliability
One Time Handling of Components
Enhanced Operator Safety
Automatic Traveler Generation
ACKNOWLEDGEMENT
Alfred E. Mann Institute
for Biomedical Engineering
@ University of Southern California, Los Angeles.
QUESTIONS & COMMENTS…