title: A percutaneous method of introducing the caval umbrella.
mesh_terms: D000818:Animals; D004285:Dogs; D006801:Humans; D008722:Methods; D011655:Pulmonary Embolism / Q000517:prevention & control*; D014656:Vascular Surgical Procedures / Q000295:instrumentation*; D014682:Vena Cava, Inferior / Q000601:surgery*