Canadian data is current through March 2018. All of the data comes from Health Canada, except for the categories Manufacturer Parent Company and Product Classification.
The Parent Company and the Product Classification were added by ICIJ.
The parent company information is based on 2017 public records. The device classification information comes from FDA’s Product Classification by Review Panel, based on matches of recall data from the U.S. and Canada.
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Applying too much or tensile force to the head of the screw during insertion and fixation of the skull reference base may cause the screw head to deform or to shear off. in such case the screw can no longer be removed the specified screwdriver or parts of the screw may remain inside the patient's skull bone.