MAUDE Adverse Event Report: ZIMMER SWITZERLAND MANUFACTURING GMBH BLUNT TIP SCREW, 4X48MM; AFFIXUS(R) NATURAL NAIL(R) SYSTEM HUMERAL NAIL

Model Number N/A

Device Problems Patient Device Interaction Problem (4001); Migration (4003)

Patient Problems Failure of Implant (1924); Insufficient Information (4580)

Event Date 08/18/2021

Event Type  Injury  

Manufacturer Narrative

Medical products: blunt tip screw, 4x46mm; catalog#47-2486-046-40; lot#3039376.Proximal humerus, right, 11x160mm; catalog#: 47-2496-160-11; lot#: 3051302.Blunt tip screw, 4x46mm; catalog#: 47-2486-046-40; lot#: 3062600.Cortical bone screw, 4x32mm; catalog#: 47-2486-132-40; lot#: 3010610.Proximal humerus nail cap, 10.5x2.5mm; catalog#: 47-2488-010-02; lot#: 3025182.Proximal humerus nail cap,11x2.5mm; catalog#: 47-2488-011-02; lot#: 3038374.Therapy date: (b)(6) 2021.The manufacturer received x-rays and other source documents for review.The manufacturer did not receive the device for investigation.Where lot numbers were received for the devices, the device history records were reviewed and found to be conforming.A cause for this specific event cannot be ascertained from the information provided.As soon as supplemental information becomes available an updated report will be submitted.Zimmer biomet¿s reference number of this file is (b)(4).

Event Description

Patient was implanted on an unknown side with an ann nail system.A week post the implantation surgery the surgeon noticed that the third blunt screw had backed out from its proper position.Hence, the patient underwent a revision surgery during which the third blunt screw was explanted.

Event Description

Patient was implanted on an unknown side with an ann nail system.A week post the implantation surgery the surgeon noticed that the third blunt screw had backed out from its proper position.Hence, the patient underwent a revision surgery during which the third blunt screw was explanted.The torque driver was used to engage the corelock, furthermore non-torque driver was used to tighten more after using the torque driver.

Manufacturer Narrative

This follow-up report is being filled to relay additional information, which was unknown at the time of the previous medwatch.D10: medical products: proximal humerus, right, 11x160mm; catalog#: 47-2496-160-11; lot#: 3051302, blunt tip screw, 4x46mm; catalog#: 47-2486-046-40; lot#: 3039376, blunt tip screw, 4x46mm; catalog#: 47-2486-046-40; lot#: 3062600, cortical bone screw, 4x32mm; catalog#: 47-2486-132-40; lot#: 3010610, proximal humerus nail cap, 10.5x2.5mm; catalog#: 47-2488-010-02; lot#: 3025182, proximal humerus nail cap,11x2.5mm; catalog#: 47-2488-011-02; lot#: 3038374 torque limiting handle; catalog#: 27923 lot#: unknown, lg cann screwdriver handle; catalog#: 214149000; lot#: unknown.Therapy date: (b)(6) 2021.Additional information was received on sep 3, 2021.The manufacturer received other source documents for review.Should additional information become available and / or the device(s) be returned for evaluation and an investigation result be available, that changes this assessment, an amended medical device report will be submitted.Zimmer¿s reference number of this file is (b)(4).

Event Description

No change to previously reported event.

Manufacturer Narrative

Event description: it was reported that the patient underwent primary implantation of a affixus natural proximal humeral nail on (b)(6) 2021.One week later, the third screw was noted to have gradually backed out from the proper position.A revision surgery took place on (b)(6) 2021 and only the backed out screw was explanted.The corelock mechanism has been reported as being engaged with the torque limiting handle after all the interlocking screws were placed and tightened with a non-torque limiting driver.Review of received data: - due diligence: no further due diligence required as all required information to support the conclusion is available or was already requested.- x-rays: one undated preoperative ap x-ray of the right shoulder has been received showing calcar comminution.The third most proximal screw appears to have migrated.- patient data: male.Product evaluation: - no product was returned; therefore, visual and dimensional evaluation could not be performed.Review of product documentation: - device purpose: all involved devices are intended for treatment.- product compatibility: the product combination was approved by zimmer biomet.- dhr review: review of the device history records identified no deviations or anomalies during manufacturing.Conclusion: it was reported that the patient underwent primary implantation of a affixus natural proximal humeral nail on (b)6) 2021.One week later, the third screw was noted to have gradually backed out from the proper position.A revision surgery took place on (b)(6) 2021 and only the backed out screw was explanted.The corelock mechanism has been reported as being engaged with the torque limiting handle after all the interlocking screws were placed and tightened with a non-torque limiting driver.The quality records of the involved products identified no deviations or anomalies during manufacturing.Therefore, no nonconformance or a complaint out of box (coob) could be identified.The received x-rays shows what appears to be a migration of the third most proximal screw.However, no additional x-ray directly post-implantation and for comparison/determination purposes of a migration of the screw have been received.Based on the investigation it could be assumed that possible contributing factors to the migration of the screw might be multifactorial related to either patient condition and behavior, implantation procedure or design features.If and to what extent any of these aspects may have influenced the backing out of the screw remains unknown.Additionally, the locking of the corelock during the initial surgery has not been performed as specified in the surgical technique using only the corelock driver with torque limiting handle.Instead, additionally a non-torque limiting screwdriver was used.It remains unknown what the potential effect of this deviation from the surgical technique could be and if this could have potentially caused or contributed to the reported event.In conclusion, as the cause may be multifactorial an exact root cause could not be identified for the migration of the screw.The need for corrective measures is not indicated and zimmer switzerland manufacturing gmbh considers this case as closed.Zimmer biomet¿s reference number of this file is (b)(4).

• Brand Name: BLUNT TIP SCREW, 4X48MM
• Type of Device: AFFIXUS(R) NATURAL NAIL(R) SYSTEM HUMERAL NAIL
• 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: 12421526
• MDR Text Key: 269786134
• Report Number: 0009613350-2021-00458
• Device Sequence Number: 1
• Product Code: HSB
• UDI-Device Identifier: 00889024505483
• UDI-Public: 00889024505483
• Combination Product (y/n): N
• Reporter Country Code: JA
• PMA/PMN Number: K200814
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Foreign,Health Professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date: 11/11/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 09/03/2021
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: Lay User/Patient
• Device Model Number: N/A
• Device Catalogue Number: 47-2486-048-40
• Device Lot Number: 3024731
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 11/03/2021
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 09/23/2020
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Removal/Correction Number: N/A
• Patient Sequence Number: 1
• Treatment: SEE H10 NARRATIVE.; SEE H10 NARRATIVE.
• Patient Outcome(s): Hospitalization; Required Intervention
• Patient Sex: Male