This case involves a 36-year-old man who underwent a laparoscopic kidney transplant in order to donate his kidney. The donor renal artery had an early branch to the upper pole, so the surgeon used an endostapler to ligate the artery. The stapler was fired and then withdrawn slowly. Rapid arterial bleeding was noted as the surgeon withdrew the stapler. The surgeon immediately made a flank incision, exposed the aorta, and held pressure until the patient was hemodynamically stable. It was alleged that the stapler was not released completely leading to the torn artery. An expert biomedical engineer familiar with endostaplers was sought to review the device in question to see if a design or manufacturing defect may have contributed to the patient’s injury.