Inflatable cushion, especially for medical treatment beds, contains magnet mounted on upper wall of inflatable chamber and magnetic field sensor mounted above it to monitor progress of inflation

摘要

The inflatable cushion (1) contains a magnet (5) mounted on the upper wall of the inflatable chamber (2). A magnetic field sensor (6) is mounted above it and monitors the progress of inflation. The sensor controls the inflation valve (3) via a processor (8).