Source:http://linkedlifedata.com/resource/umls/id/C0085590
UMD: Tubes designed for insertion into canals, vessels, passageways, or body cavities to permit injection or withdrawal of fluids or other substances. Most catheters consist of long, flexible tubes with many different shapes and tip configurations; they can perform or permit a great variety of therapeutic (e.g., hemodialysis, urinary drainage) and diagnostic procedures (e.g., cardiac, biliary).,MSH: A flexible, tubular device that is used to carry fluids into or from a blood vessel, hollow organ, or body cavity.