There are many... too many medical device companies but three of the biggest and most corrupt are Medtronic, Stryker and Johnson & Johnson/DePuy. They run the device division of the FDA.
Medtronic is most likely responsible for the largest amount of carnage. Click this link to read more about Fines exceeding $100 MILLION against Medtronic
These devices are not only designed by brain damaged engineers so that they fail in a few years; even if they function properly mechanically they shed toxic metal that causes bone necrosis and liver failure. The device companies know that these implants had a high failure rate during clinical trials and even before the clinical trials they knew every single on of them would shed toxic metal ions. They still approved them knowing that they would kill and maim thousands of humans.
Joint implants are only one example of the massive corruption within the FDA and its industry masters. Cardiac stents, imaging equipment, trans vaginal and pelvic mesh are a few other devices that are maiming and killing patients.