01253nas a2200217 4500008004100000245001700041210001700058260001400075520063300089653001800722653002700740653001200767653003200779653002200811653001200833653001100845100002300856700002600879700002300905856010700928 2000 eng d00aFaulty Valve0 aFaulty Valve bWadsworth3 aDescribes the case of the Shiley heart valve. In the late 1970's Shiley Inc. came up with a new model of an artificial heart valve that allowed better blood flow than other models, thereby reducing the risk of blood clots. Unfortunately, the valves sometime became cracked, and during the inspection process these cracked valves either had to be discarded or rewelded. However, after over 300 deaths occurred due to cracked valves, it was discovered that the practice of rewelding did not always stop the cracking from happening, and in some cases cracked valves were not even rewelded but the cracks were only polished over. 10aAcknowledging10abiomedical engineering10aproduct10aProduct and Consumer Safety10aproduct liability10aquality10asafety1 aHarris, Charles, E1 aPritchard, Michael, S1 aRabins, Michael, J uhttp://wadsworth.com/philosophy_d/templates/student_resources/0534605796_harris/cases/Cases/case35.htm