The following were reviewed as part of this investigation: patient severity, complaint and lot history review, applicable previous investigation(s), sample (if available), labeling, applicable manufacture records, and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of the inability to close and lock a statlock device was confirmed.The product returned for evaluation was one cv plus statlock device with a tricot pad and adjustable posts.The investigation findings are consistent with damage caused by pushing the securement tab at an angle while attempting to close the device.This issue can be avoided by centering the thumb about the middle of the tab and pressing directly downwards.The returned product sample was evaluated and the following observations were made which were consistent with this failure type: the tab hinge exhibited an off-axis crease and contained damage outside the hinge crease the tab latch was observed to be bent the tab catch exhibited plastic deformation at the point of contact with the latch an attempt to test the functionality of the lock was unsuccessful and the latches were observed to be misaligned with the catch base this failure type was recreated in the laboratory using non-complainant samples by closing the tab at an angle, or by pressing outside the center of the tab, and the features observed on the laboratory samples were similar to those on the returned complainant sample.The nature of the damage observed on the latch and its point of contact on the catch base, as well as the characteristics of the hinge damage, are evidence that the damage was caused by misalignment of the door when closing the device.Pushing the tab at an angle can cause the latch to miss the catch base and can permanently bend the latch.An examination of the sample revealed no potential damage/defect related to manufacture of the product.H3 other text : evaluation findings are in section h.11.
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