If you go to the source, it's clear that there is no proof that it can be done.
Abstract for Jerome Radcliffe's "Hacking Medical Devices for Fun and Insulin: Breaking the Human SCADA System" presentation:
As a diabetic, I have two devices attached to me at all times; an
insulin pump and a continuous glucose monitor. This combination of
devices turns me into a Human SCADA system; in fact, much of the
hardware used in these devices are also used in Industrial SCADA
equipment. I was inspired to attempt to hack these medical devices
after a presentation on hardware hacking at DEF CON in 2009. Both of
the systems have proprietary wireless communication methods.
Could their communication methods be reverse engineered? Could a
device be created to perform injection attacks? Manipulation of a
diabetic's insulin, directly or indirectly, could result in
significant health risks and even death. My weapons in the battle:
Arduino, Ham Radios, Bus Pirate, Oscilloscope, Soldering Iron, and a
After investing months of spare time and an immense amount of
caffeine, I have not accomplished my mission. The journey, however,
has been an immeasurable learning experience - from propriety
protocols to hardware interfacing-and I will focus on the ups and
downs of this project, including the technical issues, the lessons
learned, and information discovered, in this presentation "Breaking
the Human SCADA System."
So it seems to me that the quote in the article you're referring to must have been taken out of context.