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- Here are a few examples of my work. The information has been
edited to protect proprietary information.
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Electrical Impedance Spectroscopy of the Lower Human Torso
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Impedance vs. Bladder
Fullness - a Finite Element Analysis using flexPDE
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Electromechanical Toothbrush Induced Forces on the surfaces of
Teeth
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Toothbrush Forces - a Finite Element Analysis using flexPDE
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Comments Regarding my Biomedical Engineering
Design and Analysis Work:
- I was very lucky to get involved with biomedical engineering projects
early in my career. In graduate school, I got a Research
Assistanceship position working for Dr. Richard Blandau, a world renown
biologist whose specialty was mammalian female reproductive physiology. My job was to develop, build and operate very
small implantable sensors and related telemetry for the purpose of long term
implantation and observation of the oviduct in rabbits. The devices I designed were
very helpful to Dr. Blandau's research goals.
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- In the course of this work, I became known to medical ultrasound pioneer
Don Baker and was eventually assimilated into his group. There, I
worked with Ron Daigle and Frank Barber designing part of the signal processing for the
world's first Duplex Doppler ultrasound system.
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- Eventually, I got my masters degree and was hired at the fledgling
startup, Advance Technology Laboratories (
ATL ), now Philips Ultrasound. I was
the first chief engineer for ATL and personally designed all the RF-Analog
front end electronics for their successful line of breakthrough ultrasound scanner products.
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- Subsequent to this, I was a freelance consultant
engineer and, at one
point, was retained by Quinton Instruments to improve a skin preparation
tool for stick-on EKG electrodes that was having new product "teething" problems.
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- More recently, I was introduced
to an entrepreneur concerned with
measuring the degree of bladder fullness by interrogating the lower abdomen
using ultrasound.
Out of general interest, I made a numerical model of a simple electrical
impedance spectroscopy ( EIS ) measurement in order to find out if impedance
variation with bladder fullness would cause enough change to be measurable
in a practical scenario. My motivation was that EIS methods are often much simpler to implement than are ultrasound means.
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- Recently, I have made simple yet
informative numerical models and developed instrumentation for
establishing the bristle induced fluid forces exerted by electromechanical
toothbrushes on teeth.
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