MAUDE Adverse Event Report: MEDACTA INTERNATIONAL SA MUST MINI ROD TI 3.5 X 80MM (STERILE); SPINE ROD

Model Number 03.75.600

Device Problems Loose or Intermittent Connection (1371); Unintended Movement (3026)

Patient Problem Failure of Implant (1924)

Event Date 06/22/2021

Event Type  Injury  

Manufacturer Narrative

Batch review performed on 23.06.2021: lot 2120973: (b)(4) items manufactured and released on 12-apr-2021.Expiration date: 2026-03-04.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold without similar reported event.Additional items involved in the event, batch review performed on 23.06.2021: must mini 03.75.600 must mini rod ti ø3.5 x 80mm (sterile) (k171369) lot.1922070 lot 1922070: (b)(4) items manufactured and released on 19-07-2019.Expiration date: 2024-07-03.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold without similar reported event.Must mini 03.75.002 must mini polyaxial screw 3.5 x 14 full thread + nut (k171369) lot.2022678 lot 2022678: (b)(4) items manufactured and released on 22-10-2020.Expiration date: 2025-10-07.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with 3 similar reported events (all implants reported in this complaint).Must mini 03.75.002 must mini polyaxial screw 3.5 x 14 full thread + nut (k171369) lot.2022677 lot 2022677: (b)(4) items manufactured and released on 16-11-2020.Expiration date: 2025-10-18.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold with 1 similar reported event (reported in this complaint).Must mini 03.75.002 must mini polyaxial screw 3.5 x 14 full thread + nut (k171369) lot.2022255 lot 2022255: (b)(4) items manufactured and released on 07-10-2020.Expiration date: 2025-09-20.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold without similar reported event.Must mini 03.75.002 must mini polyaxial screw 3.5 x 14 full thread + nut (k171369) lot.2021938 lot 2021938: (b)(4) items manufactured and released on 21-09-2020.Expiration date: 2025-09-060.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been sold without similar reported event.

Event Description

C3-c6 fixation, surgery performed on june 16.On the next day the surgeon took the ct image and confirmed the rods disengagement from the pedicle screws.The surgeon confirmed 2 set screws on the c4 completely disengaged and remained 6 set screws loosened.No cross connector used at the primary surgery.All implants were revised.The instruments used did not show any problem during other surgeries.

Manufacturer Narrative

Devices returned on 21-july-2021 ad analyzed.Visual inspection performed by r&d project manager.During the visual inspection on retrieved set-screws component, it was observed that the components were still in good condition with no sign of deformation and/or failure.Additionally, a test was performed to investigate about the possible root cause and verify the ability of the set-screws to fully secure the overall screws-rod construct.In conclusion, we hyposthesize that the root cause of this complaint is due to not performing the final tighetening in the proper way, by using the associated pre-set torque limiter screwdriver as given in the related surgital technique.

• Brand Name: MUST MINI ROD TI 3.5 X 80MM (STERILE)
• Type of Device: SPINE ROD
• Manufacturer (Section D): MEDACTA INTERNATIONAL SA; strada regina; castel san pietro, 6874 ; SZ 6874
• MDR Report Key: 12159037
• MDR Text Key: 261426966
• Report Number: 3005180920-2021-00589
• Device Sequence Number: 1
• Product Code: NKG
• UDI-Device Identifier: 07630030864988
• UDI-Public: 07630030864988
• Combination Product (y/n): N
• PMA/PMN Number: K171369
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative
• Type of Report: Initial,Followup
• Report Date: 08/03/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 07/13/2021
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Model Number: 03.75.600
• Device Catalogue Number: 03.75.600
• Device Lot Number: 2120973
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/21/2021
• Date Manufacturer Received: 06/22/2021
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention
• Patient Age: 82 YR