A vena cava filter, which happens to be a filter that sits inside the vena cava vein to assist avert blood clots from traveling to the lungs The symptoms of the mini-stroke or transient ischemic attack are similar to those of the stroke but do not past as very long. https://www.sgvascularctr.com/a-comprehensive-guide-to-deep-vein-thrombosis-treatment-in-singapore/