MAUDE Adverse Event Report: MEDOS INTERNATIONAL SÃ RL CH MNTR M/L SCREW 4.0 DIA X 30; ORTHOSIS, CERVICAL PEDICLE SCREW SPINAL FIXATION

Model Number 188319430

Device Problem Disconnection (1171)

Patient Problem No Known Impact Or Consequence To Patient (2692)

Event Date 08/06/2019

Event Type  malfunction  

Manufacturer Narrative

(b)(4).The device is available for evaluation.Investigation will be conducted.Follow up will be filed with the investigation results.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.

Event Description

It was reported that this was a posterior cervical spinal fusion procedure treating atlantoaxial subluxation, stabilizing c2, on (b)(6) 2019.After the screw (1883.19.430) was inserted, the surgeon tried to detach the screw from a screwdriver.Because s/he felt discomfort on the removal, a little more load was added to the devices.Then, the screwdriver was disconnected from the screw, and components inside the screwhead came off.The surgery was completed with a replacement less than a 30-minute delay.No further information is available.This complaint involves one (1) device.

Manufacturer Narrative

Product complaint #: (b)(4).Udi: (b)(4).Depuy synthes is submitting this report pursuant to the provisions of 21 cfr, part 803.This report may be based on information which depuy synthes has not been able to investigate or verify prior to the required reporting date.This report does not reflect a conclusion by fda, depuy synthes or its employees that the report constitutes an admission that the device, depuy synthes, or its employees caused or contributed to the potential event described in this report.Visual examination of the returned device found the screw¿s saddle had completely separated from the tulip head.The screw itself features a stripped drive feature in its screw head.There are also tool marks on the tulip head¿s surface that obscure the lot number.The saddle does show signs of use, but not damage.A review of the device history record could not be performed since the lot number was not provided.Although the sample was returned, marks on the surface of the screw prevent it from being fully legible.Without the lot number, no review of its manufacturing records could be completed.The root cause of the saddle separating from the tulip head and screw cannot be determined from the sample and the information provided.A potential root cause may be excessive force placed on the screw head during tightening.This may have occurred if high amounts of stress were placed on the screw¿s saddle, especially at an extreme angle in relation to the adjacent components of the screw.As there has been no issue identified in the manufacturing or release of the device that could have contributed to the problem reported by the customer, this complaint file will be closed with no further action required.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.

Manufacturer Narrative

Product complaint #: (b)(4).

• Brand Name: MNTR M/L SCREW 4.0 DIA X 30
• Type of Device: ORTHOSIS, CERVICAL PEDICLE SCREW SPINAL FIXATION
• Manufacturer (Section D): MEDOS INTERNATIONAL SÃ RL CH; chemin-blanc 38; le locle 02400 ; SZ 02400
• MDR Report Key: 8910697
• MDR Text Key: 179723714
• Report Number: 1526439-2019-52009
• Device Sequence Number: 1
• Product Code: NKG
• UDI-Device Identifier: 10705034157924
• UDI-Public: (01)10705034157924
• Combination Product (y/n): N
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,foreig
• Type of Report: Initial,Followup,Followup
• Report Date: 08/05/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 08/20/2019
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: 188319430
• Device Catalogue Number: 188319430
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 09/10/2019
• Date Manufacturer Received: 10/24/2019
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1