MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN OFFSET COUPLER TRIAL 4MM; PROSTH, KNEE, PATE/FEMOROTIBIAL, SEMI-CONST, UNCEM, PORO, COAT, POLY/METAL/POLY

Model Number	71434304
Medical Device Problem Codes	Component Missing (2306); Connection Problem (2900)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/18/2021
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that, during a revision surgery of a tka procedure, there's missing a screw piece in the j-hook slot, unable to loosen or tighten.This happened outside the patient.There was a slight delay of less than or equal to 30 minutes.Procedure was completed with a backup device.
Additional Manufacturer Narrative
The device, intended for use in treatment, was not returned for evaluation and the reported event could not be confirmed.A review of complaint history did not reveal additional complaints for the listed batch.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.This device is a reusable instrument that can be exposed to numerous surgeries.Damage from prolonged use, misuse or rough handling are likely probable causes of the reported event.We recommend that all reusable instruments be routinely inspected for wear and damage and replaced as necessary.Based on this investigation, the need for corrective action is not indicated.Without the return of the actual product involved, our investigation could not proceed.Should the device or additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.

• Brand Name: LGN OFFSET COUPLER TRIAL 4MM
• Common Device Name: PROSTH, KNEE, PATE/FEMOROTIBIAL, SEMI-CONST, UNCEM, PORO, COAT, POLY/METAL/POLY
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• MDR Report Key: 11646918
• Report Number: 1020279-2021-02877
• Device Sequence Number: 3397518
• Product Code: MBH
• UDI-Device Identifier: 03596010547972
• UDI-Public: 03596010547972
• Combination Product (Y/N): N
• Initial Reporter State: AZ
• Initial Reporter Country: US
• PMA/510(K) Number: K121393
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative,health
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 07/15/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 71434304
• Device Catalogue Number: 71434304
• Device Lot Number: 16FM13919
• Was Device Available for Evaluation?: Yes
• Initial Date Received by Manufacturer: 03/18/2021
• Supplement Date Received by Manufacturer: 07/14/2021
• Initial Report FDA Received Date: 04/11/2021
• Supplement Report FDA Received Date: 07/15/2021
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1