MAUDE Adverse Event Report: ZIMMER SWITZERLAND MANUFACTURING GMBH BLUNT TIP SCREW, 4X34MM; ROD, FIXATION, INTRAMEDULLARY

Model Number	N/A
Medical Device Problem Code	Migration or Expulsion of Device (1395)
Health Effect - Clinical Codes	Failure of Implant (1924); No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	10/28/2022
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).Concomitant medical products: proximal humerus, right, long, 8.5x200mm item# 47-2496-200-08 lot# 3007839.Blunt tip screw, 4x36mm item# 47-2486-036-40 lot# 3076800.Blunt tip screw, 4x38mm item# 47-2486-038-40 lot# 3078221.Report source: foreign - japan.The device will not be returned for analysis; however, an investigation of the reported event is in progress.Once the investigation is completed, a supplemental medwatch 3500a will be submitted.Multiple mdr reports were filed for this event, please see associated reports: 0009613350 - 2022 - 00609, 0009613350 - 2022 - 00611, and 0009613350 - 2022 - 00612.
Event or Problem Description
It was reported that the surgeon found that the proximal screw was backed out from the proper position five (5) months after the initial surgery.The surgeon will continue to monitor the patient's condition.Revision surgery is not currently planned.No further patient outcome was provided.Due diligence is in progress for this complaint; to date no additional information or product has been received.
Event or Problem Description
No further event information available at the time of this report.
Additional Manufacturer Narrative
(b)(4).This follow-up report is being submitted to relay additional information.The following sections were updated: b4, b5, g3, g6, h1, h2, h6, h10.Products remain implanted.No product was returned or pictures provided: product evaluation could not be performed.Review of the manufacturing records identified no deviations or anomalies during manufacturing related to the reported event.Devices used for treatment.Medical records were not provided.Based on the investigation it could be assumed that further possible contributing factors to the migration of the screw might be multifactorial related to either patient condition, behavior or implantation procedure.If and to what extent any of these aspects may have influenced the migration of the screw remains unknown.An additional deeper investigation was performed which identified the design limitation of the corelock mechanism of the nail as a potential contributing factor.As part of the deeper investigation, a scientific literature search was conducted and a systematic review of the outcome of intramedullary nailing for acute proximal humerus fracture showed that screw migration and perforation into the joint is the second most common complication following secondary loss of reduction.In addition, scientific literature of competitor and predicate devices were assessed.This review has shown that system performs better and/or in equal range in comparison with legally marketed similar devices.Therefore, no design changes were conducted.In conclusion, as the cause may be multifactorial an exact root cause could not be identified for the migration of the screw.If any further information is found which would change or alter any conclusions or information, a supplemental report will be filed accordingly.Zimmer biomet will continue to monitor for trends.

• Brand Name: BLUNT TIP SCREW, 4X34MM
• Common Device Name: ROD, FIXATION, INTRAMEDULLARY
• Manufacturer (Section D): ZIMMER SWITZERLAND MANUFACTURING GMBH; sulzer allee 8; sulzer industrie park; winterthur 8404 ; SZ 8404
• Manufacturer (Section G): ZIMMER SWITZERLAND MANUFACTURING GMBH; sulzer allee 8; sulzer industrie park; winterthur 8404 ; SZ 8404
• Manufacturer Contact: christina arnt ; 56 e. bell dr.; warsaw, IN 46582 ; 5745273773
• MDR Report Key: 15841855
• Report Number: 0009613350-2022-00610
• Device Sequence Number: 20329112
• Product Code: HSB
• UDI-Device Identifier: 00889024505414
• UDI-Public: (01)00889024505414(17)260528(10)3076619
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K181827
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2022
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 12/28/2022

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 05/28/2026
• Device Model Number: N/A
• Device Catalogue Number: 47-2486-034-40
• Device Lot Number: 3076619
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 11/01/2022
• Supplement Date Received by Manufacturer: 12/12/2022
• Initial Report FDA Received Date: 11/22/2022
• Supplement Report FDA Received Date: 12/29/2022
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 05/28/2021
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: N/A
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: SEE H10 NARRATIVE.
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Prefer Not To Disclose