MAUDE Adverse Event Report: MEDOS INTERNATIONAL SÃ RL CH VIPER MONO SCREW 6X45MM TI; ORTHOSIS, SPINAL PEDICLE FIXATION, FOR DEGENERATIVE DISC DISEASE

Model Number 186717645

Device Problem Material Split, Cut or Torn (4008)

Patient Problems Unspecified Infection (1930); No Code Available (3191)

Event Type  Injury  

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 on an unknown date, patient was in an accident in (b)(6) and taken to a (b)(6) trauma center for a t12 compression fracture.Patient was instrumented percutaneously from t10-l2 using dss viper system last (b)(6) 2019.Upon return to the us, patient was bending and heard/felt a pop.He came to the er and images revealed the hardware had disassembled.Several set screws were displaced and the rod had come out of the screw saddle.During the revision surgery, on (b)(6) 2019, it was found that all of the set screws were loose and some were sitting extremely proud in the screw saddle.Hardware was removed, replaced, and sufficiently locked.There was a hardware failure and infection.There was a patient consequence.Procedure outcome is unknown.Concomitant device reported: viper2 straight rod-160mm (part# 186789160, lot# unknown, quantity 1), viper2 straight rod-180mm (part# 186789180, lot# unknown, quantity 1).This complaint involves sixteen (16) devices.

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 found that the initial threads on the tulip head of the screw were torn.A review of the device history record was conducted.No issues were identified during the manufacturing and release of this product that could have contributed to the problem reported by the customer.With the information provided, a definitive root cause for the torn threads on the tulip head of the screw cannot be determined.Noted damage suggests that inadvertently cross threading of the setscrew occurred upon insertion into the tulip head 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.

• Brand Name: VIPER MONO SCREW 6X45MM TI
• Type of Device: ORTHOSIS, SPINAL PEDICLE FIXATION, FOR DEGENERATIVE DISC DISEASE
• Manufacturer (Section D): MEDOS INTERNATIONAL SÃ RL CH; chemin-blanc 38; le locle 02400 ; SZ 02400
• MDR Report Key: 9161320
• MDR Text Key: 168261128
• Report Number: 1526439-2019-52205
• Device Sequence Number: 1
• Product Code: NKB
• UDI-Device Identifier: 10705034123479
• UDI-Public: (01)10705034123479
• Combination Product (y/n): N
• PMA/PMN Number: K160904
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative
• Type of Report: Initial,Followup
• Report Date: 09/12/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 10/07/2019
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: 186717645
• Device Catalogue Number: 186717645
• Device Lot Number: RL263317
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 09/26/2019
• Date Manufacturer Received: 11/05/2019
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention