Laryngoscope

According to one of the references an 257227000|Anesthetic laryngoscope (physical object)| is a duplicate of 706013009 |Intubation laryngoscope (physical object)|. I'm in doubt if it is a real duplicate or if a anesthetic laryngoscope is a kind of intubation laryngoscope. In that case the anesthetic laryngoscope should be a descendant of the intubation laryngoscope.