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A stainless steel sieve placed IV below the renal arteries via the jugular vein, designed to trap deep vein thrombi in the inferior vena cava
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

umbrella

Mobin-Uddin umbrella Heart surgery A stainless steel sieve placed IV below the renal arteries via the jugular vein, designed to trap deep vein thrombi in the inferior vena cava. See Deep vein thrombosis, Pulmonary thromboembolism.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.