Section 870.3375 - Cardiovascular intravascular filter(a)Identification. A cardiovascular intravascular filter is an implant that is placed in the inferior vena cava for the purpose of preventing pulmonary thromboemboli (blood clots generated in the lower limbs and broken loose into the blood stream) from flowing into the right side of the heart and the pulmonary circulation.(b)Classification. Class II. The special controls for this device are:(1) "Use of International Standards Organization's ISO 10993 'Biological Evaluation of Medical Devices Part I: Evaluation and Testing,' " and(2) FDA's:(i) "510(k) Sterility Review Guidance and Revision of 2/12/90 (K90-1)" and(ii) "Guidance for Cardiovascular Intravascular Filter 510(k) Submissions."45 FR 7907, Feb. 5, 1980, as amended at 52 FR 17736, May 11, 1987; 65 FR 17144 , Mar. 31, 2000