<unk>  were developed and introduced by Alfred<unk>  in 1879 originally for use in the field of Gynecology. Typically,<unk>  are a set of metal rods of increasing diameters, from a few millimeters up to 26 millimeters. The rods are round, slightly curved, and have a conal tip. Some sets have conal tips at both ends, while others have one end flattened for easy handling.<unk>  are typically marked with a<unk>  number that is equivalent to its size in millimeters (e.g. a<unk>  size 8 is 8mm thick). Commercially available<unk>  are commonly sold in sets of 8, 10, or 14 individual rods. Each set includes a range of sizes, popularly from 3mm - 17mm for single-ended<unk>  or 3mm/4mm - 17mm/18mm for double-ended<unk> , though configurations with sizes anywhere from 1mm to 26mm do exist.
Hegar dilators
Uvulopalatoplasty
Vascular snare
Myringotomy
Tenotomy scissors
Hartmann alligator forceps
Glanuloplasty
Septoplasty