Now, the diabetes has a new enemy: the artificial pancreas. It links data from an implanted blood-sugar sensor to a computer, which then controls how a pump worn on the hip dribbles insulin under the skin through a pipette. In its fully realized form, the machine would take the patient out of the decision-making loop, which is why it is often called a closed-loop system.
“It is a classic problem in control technology, which is the methodology used in process control,” says Ahmad Haidar, an electrical engineer working on the problem at the Institut de Recherches Cliniques de Montréal (IRCM). Such technology is used, for instance, to guide a spacecraft or to govern the processing of crude oil in a refinery. Haidar’s group is one of a number of academic and corporate teams vying to create a closed-loop system for an artificial pancreas.
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