Medical apparatus and instruments; Surgical apparatus and instruments; Apparatus for the treatment of babies; Cannulae; Tubing for use with cannulas; Apparatus for use in testing hearing disorders; Apparatus for use in treating hearing disorders; Hearing aids; Hearing protectors; Medical hearing instruments; Ear defenders; Ear plugs (ear protection devices); Ear protecting devices (other than ear plugs); Ear protectors (other than ear plugs)