Correct spelling for the English word "trielcon" is [tɹˈa͡ɪlkən], [tɹˈaɪlkən], [t_ɹ_ˈaɪ_l_k_ə_n] (IPA phonetic alphabet).
A long three-jawed forceps for the extraction of foreign bodies from wounds or canals.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.