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Here are a few examples of my work.  The information has been edited to protect proprietary information.

 

Electrical Impedance Spectroscopy of the Lower Human Torso

 

        Impedance vs. Bladder Fullness - a Finite Element Analysis using flexPDE

Electromechanical Toothbrush Induced Forces on the surfaces of Teeth

 

        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.

 

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 ultrasound instrumentation pioneers Ron Daigle and Frank Barber designing part of the signal processing for the world's first Duplex Doppler ultrasound system.

 

Eventually, I got my masters degree in electrical engineering 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.

 

Subsequent to this,  I was a freelance consultant engineer and, at one point, was retained by Quinton Instruments (now absorbed into who knows what corporate giant) to improve a skin preparation tool for stick-on EKG electrodes that was having new product "teething" problems.

 

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.

 

Also, I have made simple yet informative numerical models and developed instrumentation for establishing the bristle induced fluid forces exerted by electromechanical toothbrushes on teeth.

 

In 2008 I took an ultrasound hardware engineering job at Verathon, the world-famous manufacturer of the "BladderScan," a non-invasive bladder volume measureing instrument now found in almost all hospitals in the world.  While there, I designed the hardware front end electronics for a 10 MHz 128 channel pulsed-echo linear array scanning system, intended for use in guided needle-catheter placement in veins of the arm.