Currently, the Bard IVC multidistrict litigation (MDL 2641) has 886 lawsuits consolidated for pretrial proceedings. The Cook multidistrict litigation (MDL 2570) has 933. Lawsuits against Cook and Bard allege the companies failed to warn patients and health care professionals about the very real risk of IVC filter failure.
IVC filters are implanted in patients who are at risk of pulmonary embolism but who for whatever reason cannot take anticoagulant medications. The filters are designed to trap blood clots before they can reach the patient's lungs. Some patients, however, have reportedly suffered serious adverse events when the filters have allegedly broken and perforated major blood vessels or other tissues.
Concern about the filters is high enough that both Health Canada and the US Food and Drug Administration (FDA) have issued warnings about the devices. The FDA issued a Safety Communication in August 2010, warning that it had received more than 900 reports of issues with the devices. On July 25, 2016, Health Canada issued a warning of its own, noting it received more than 120 reports of serious complications—including death, cardiac perforation, and filter fracture.
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Lawsuits have been filed in both the US and Canada against the makers of IVC filters, alleging the makers knew or should have known about the risks associated with their devices but failed to warn the public or health care professionals. Meanwhile, both sides wait for the start of the bellwether trials, so they can see what evidence the other side has prepared and get an idea of how the courts will rule in the cases.