blockage

In one recent example, teams of tiny magnetic robots—each about the size of a grain of sand—cleared blockages in artificial blood vessels by forming chains to push through the obstructions.

At the microscopic scale, researchers are developing tiny robots that could work together to navigate the human body to deliver medication or clear blockages without surgery.

Ischemic strokes occur when a blood clot or blockage restricts oxygen and nutrient flow to the brain.

The net’s original designers dealt with that imperfection by providing for the network to steer data away from blockages or other problems.

A blockage estimated to be around 100 tonnes has been cleared from a west London sewer.