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This report is based solely on the information provided by the customer.Confirmation of customer's complaint and the root cause could not be determined.A review of the device history record could not be performed since the product lot number was not provided.A historical review of the complaint database revealed similar complaints over the last 2 years.Of those returned, broken clips, excessive force, and/or wear and tear has contributed to the malfunction.Additionally, user error related to misapplication of the device per the instructions for use or use with incorrect patient population were found to have contributed to several such complaints.Instructions for use (ifu) were reviewed and found to provide adequate instructions and warnings for safe and effective use of the device.The ifu states to before each use, check cuffs and straps for cracks, tears, and/or excessive wear or stretch, broken buckles or locks, and/or that hook-and-loop adheres securely as these may allow patient to remove cuff.Discard if device is damaged or if unable to lock.To limit unwanted adjustment, tie an overhand knot with the excess strap directly below the quick-release buckle.The ifu also provided extra warning to not use this device with someone who has continued highly aggressive or combative behavior, self-destructive behavior, or deemed to be an immediate risk to others or to self.Without return of the device the reported issue could not be confirmed.At this time there is no evidence that a manufacturing non-conformity contributed to the reported complaint, and the instructions for use were reviewed and determined to provide adequate instructions and warnings for the safe and effective use of the device.Therefore, no further corrective or preventative actions are necessary.All complaints are trended and reviewed by management on a monthly basis.As part of this monthly review, any excursion above the control limits for this failure mode will be assessed, documented and acted upon as warranted.Manufacturer reference file: (b)(4).
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