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USING POKA-YOKE SYSTEMS
signal to a counter that detects when the right number of
movements has happened. Another technique is to measure or
count the number of parts in advance; if parts are left over or
unaccounted for, workers will know that something is wrong.
This technique can be used to prevent surgical sponges from
being inadvertently left in a patient during surgery.
5.6.3 Motion-Step or Sequence Techniques
In the third approach to setting up a poka-yoke, the motion-
step or sequence technique, a device is used to sense whether
a motion or step in the process has been carried out within
a certain expected time. It can also be used to ...