One 72203013 incisor plus platinum 4.5 mm blade used for treatment, was not returned for evaluation.The device returned was a new, unopened, unused product of the same code; not the item used for the procedure reported.This complaint is also related to two other complaints.This complaint stated: ¿a black smear was left inside the patient after using the blades¿.The tyvek pouch was opened and the inner edgeform blade was grasped between, rotated and wiped on paper.Two light but visible tracks of fine grey particulate remained on the paper.The product was then tested and performed as expected.There were no abnormalities noted.The sluff chamber, both blades and tips had no outstanding observations.The blade connected, ran in forward, reverse and oscillating.It switched between modes with no issue.There were no error messages indicated on the control panel.The complaint was assigned to engineering for further evaluation.The condition reported was duplicated.See attached engineering findings (attached separately due to size).
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