Microchips in the Blood

September 18, 2002 | Source: September 19, 2002

Many of the promised genomic drugs will be impossible to swallow as pills. Instead, they will have to be injected in minute quantities at precise intervals for months at a time. Just the job for an implantable syringe-on-a-chip. Researchers in this field refer to their goal as intelligent drug delivery. The intelligence is derived from a piece of silicon one centimetre square. Etched in the silicon is a matrix of tiny wells, each designed to hold 150 nanolitres (billionths of a litre) of medicine.