FDA Adverse Event Malfunction Summary report: N

SCREW

MDR report key: 2045647 · Received February 28, 2011

Report

Report Number
2032499-2011-00028
Event Type
Malfunction
Date Received
February 28, 2011
Date of Event
June 22, 2009
Report Date
July 2, 2009
Manufacturer
INTERVENTIONAL SPINE, INC.
Product Code
MRW
Removal / Correction Number
2032499-012511-001
Product Problem
Yes
Report Source
Manufacturer report
Reporter Occupation
NOT APPLICABLE

Narratives

Additional Manufacturer Narrative · 1

ROOT CAUSE: 2082-00 PULL PINS WERE MANUFACTURED SMALLER THAN THE DIMENSIONAL REQUIREMENTS, CAUSING THEM TO THREAD INTO 2080-01 SCREWS WITH MINIMAL LOCKING FORCE. THE SUPPLIER PRODUCED THE 2082-00 PULL PINS USING HIS OWN NOMINAL TARGETS WITHOUT REGARD FOR TOLERANCES BASED ON THE SPECIFIED THREAD STANDARD. AS A CORRECTIVE ACTION, THE PULL PIN SUPPLY WAS REMOVED FROM THE ORIGINAL MANUFACTURER AND MOVED TO THE SAME VENDOR WHO MADE THE SCREWS. IN ADDITION, ALL THREAD CALLOUTS ARE SUPPLEMENTED WITH SPECIFIC DIMENSIONAL TOLERANCES. INITIALLY IT WAS DETERMINE THE EVENT WAS NOT REPORTABLE. ON A SUBSEQUENT RE-REVIEW, IT WAS DETERMINED THAT THIS EVENT SHOULD HAVE BEEN REPORTED.

Description of Event or Problem · 1

LEVEL 3 PROCEDURE. SURGEON IMPLANTED SIX PERPOS SCREWS IN TOTAL. SURGEON INSERTED PERPOS DEVICE AND ATTEMPTED TO COMPRESS USING THE COMPRESSION TOOL. TWO OF THE PULL PINS DISENGAGED FROM THE HEAD DURING COMPRESSION. AS SCREW WAS NOT FULLY COMPRESSED, SCREWDRIVER WAS PLACED ONTO HEAD OF SCREW AND SCREWED TIGHT. THE PATIENT WAS NOT COMPROMISED.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
1 SCREW MRW INTERVENTIONAL SPINE, INC. 9024-00 050709-A

Patients

Seq Age Sex Outcome Treatment
1 Required Intervention