MAUDE Adverse Event Report: ZIMMER BIOMET SPINE INC. CANNULATED POLYAXIAL SCREW 7.5MM X 50MM; PATHFINDER NXT MINIMALLY INVASIVE PEDICLE SCREW SYSTEM

Catalog Number 3505-7550

Device Problem Disassembly (1168)

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

Event Type  malfunction  

Manufacturer Narrative

Without a product return, no product evaluation is able to be conducted.Current information is insufficient to permit a valid conclusion about the cause of this event.If additional information is obtained that adds value to the relevant content of this report and/or a conclusion can be drawn, a follow-up report will be sent.

Event Description

It was reported that the tulip of a pedicle screw detached from the screw shaft during surgery.The surgeon loosened the screw from the inserter to change the screw's trajectory.The tulip detached after the screw was retightened to the inserter and the screw was further installed.The screw shaft was successfully removed from the wound.There were no reports of patient injury associated with this event.

Manufacturer Narrative

The returned screw was evaluated.The tulip has disassembled from the screw shaft due to deformation on the swivel ring and shaft splines.It is likely that while tightening the polyaxial screw, a very high force was applied to the screw head, causing the material on the ring to push back and the splines to deform.A review of the manufacturing records did not identify any issues which would have contributed to this event.

• Brand Name: CANNULATED POLYAXIAL SCREW 7.5MM X 50MM
• Type of Device: PATHFINDER NXT MINIMALLY INVASIVE PEDICLE SCREW SYSTEM
• Manufacturer (Section D): ZIMMER BIOMET SPINE INC.; 10225 westmoor dr.; westminster CO 80021
• Manufacturer (Section G): ZIMMER BIOMET SPINE INC.; 10225 westmoor dr.; na; westminster CO 80021
• Manufacturer Contact: geoffrey gannon ; 10225 westmoor dr.; na; westminster, CO 80021 ; 3034437500
• MDR Report Key: 6699662
• MDR Text Key: 79645968
• Report Number: 3012447612-2017-00297
• Device Sequence Number: 1
• Product Code: NKB
• Combination Product (y/n): N
• Reporter Country Code: JA
• PMA/PMN Number: PK132884
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,foreig
• Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date: 12/27/2017

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 07/10/2017
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Catalogue Number: 3505-7550
• Device Lot Number: 88SN
• Other Device ID Number: (01)00889024335783
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/10/2017
• Is the Reporter a Health Professional?: No
• Date Manufacturer Received: 12/22/2017
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 12/22/2016
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: N
• Patient Sequence Number: 1