MAUDE Adverse Event Report: WARSAW ORTHOPEDICS CD HORIZON SPINAL SYSTEM; APPLIANCE, FIXATION, SPINAL INTERLAMINAL

Catalog Number	7440020
Medical Device Problem Code	Failure to Align (2522)
Health Effect - Clinical Code	No Known Impact Or Consequence To Patient (2692)
Date of Event	03/15/2018
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Neither the device nor films of applicable imaging studies were returned to the manufacturer for evaluation.Therefore, we are unable to determine the definitive cause of the reported event.If information is provided in the future, a supplemental report will be issued.
Event or Problem Description
It was reported that the patient underwent through lateral frontal lumbar 3-4, lumbar 4-5 discectomy, lumbar 3-5 nerve decompression, interbody bone graft fusion, anterior internal fixation due to degenerative spondylolisthesis at 4 and spinal canal stenosis at lumbar 3-5.During the surgery, the set screw slipped which could not be locked.Hence, the set screw was completely explanted.No patient complications were reported as a result of the event.
Additional Manufacturer Narrative
Product analysis: visual and macroscopic inspection confirmed the threads of the break off screw have been damaged.The thread crest and flank damage appears to have initiated at the start of the thread, and is consistent around the damaged portion of the thread.Functional evaluation with a sample mas found the set screw unable to be fully engaged in the mas head.The above observations are consistent with misalignment of the mas and set screw threads during construct assembly.If information is provided in the future, a supplemental report will be issued.

• Brand Name: CD HORIZON SPINAL SYSTEM
• Common Device Name: APPLIANCE, FIXATION, SPINAL INTERLAMINAL
• Manufacturer (Section D): WARSAW ORTHOPEDICS; 2500 silveus crossing; warsaw IN 46582
• MDR Report Key: 7463857
• Report Number: 1030489-2018-00595
• Device Sequence Number: 1544346
• Product Code: KWP
• UDI-Device Identifier: 00885074488639
• UDI-Public: 00885074488639
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K042025
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 02/19/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Catalogue Number: 7440020
• Device Lot Number: 0600629W
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/04/2019
• Initial Date Received by Manufacturer: 04/04/2018
• Supplement Date Received by Manufacturer: 02/18/2019
• Initial Report FDA Received Date: 04/26/2018
• Supplement Report FDA Received Date: 02/19/2019
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Patient Age: 63 YR