Source:http://linkedlifedata.com/resource/umls/id/C0179393
SPN: A urethral dilator is a device that consists of a slender hollow or solid instrument made of metal, plastic, or other suitable material in a cylindrical form and in a range of sizes and flexibilities. The device may include a mechanism to expand the portion of the device in the urethra and indicate the degree of expansion on a dial. It is used to dilate the urethra. This generic type of device includes the mechanical urethral dilator, urological bougies, metal or plastic urethral sound, urethrometer, filiform, and filiform follower.,UMD: Bougies designed to explore (e.g., to search for stones) and/or dilate the urethra. These manual, handheld devices are typically hollow metallic or plastic cylinders that often have a tapered working end. Some urethral bougies permit the introduction of an extremely slender solid tube (a filiform) through their lumen for use as a guide or for dilation of very thin strictures.