New instruments were created using as archetype Physick´s tonsilotome model. Fahnestock, in the United States, 1832, Mackenzie in London, 1880, Brunings in 1908 and Sluder in 1911 in the United "States developed similar equipment. Greenfield Sluder, an ENT doctor, in Saint Louis was not the first to use the guillotine-cutter for tonsillectomy, but he published a study, in 1912, in which he affirmed to have reached 99.6% of success in his surgeries through this technique (1,2). They all aimed to accomplish surgery as fast as they could, especially in children, for the account of the lack of anesthetic techniques." Retrieved from URL: http://www.internationalarchivesent.org/additional/acervo_eng.asp?id=395 Sluder's Tonsil Guillotine large size. This metal piece of tonsillectomy equipment was designed by Greenfield Sluder in 1911. The piece has generalised oxidation spots on its surface but mostly founded over the top retractile arm blade holder and handle, also has sulphated areas at the base of the handle surface with a bluish colouration. This piece has a screw attached on top of the arm as part of the adjustable blade retractile system.sluder, greenfield, tonsil, guillotine, tonsillectomy