Each year thousand of Americans are treated for serious medical conditions which require the use of medical devices such as implants or artificial parts or with medical equipment that health care professionals must depend upon to properly treat the patient. Unfortunately, some of these devices have failed to work as anticipated, due either to defects in the design or in manufacturing process, and have left patients either dead, injured, or in need of having the device removed and replaced. Some of the devices which have been shown to be defective or the subject of investigations include: