MAUDE Adverse Event Report: OBERDORF SYNTHES PRODUKTIONS GMBH CONICAL EXTRACTION SCREW FOR 1.5MM & 2.0MM CORTEX SCREWS; EXTRACTOR

Catalog Number	309.510
Medical Device Problem Code	Material Integrity Problem (2978)
Health Effect - Clinical Code	No Patient Involvement (2645)
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Additional narrative: device is an instrument and is not implanted/explanted.Dhr review was completed.Part: 309.510, lot: l759222 , manufacturing site: (b)(4), release to warehouse date: 22.Mar.2018.The device history record shows this lot of (b)(4) pieces was processed through the normal manufacturing and inspection operations with no rework or nonconformities noted.This lot met all dimensional, visual and material criteria at the time of release with no issues documented during the manufacturing process.Measured hardness during manufacturing process was within specifications.Review of the device history record showed that there were no issues during the manufacture of this product which would contribute to this complaint condition.Customer quality conducted an investigation of the returned device.Investigation selection, investigation site: (b)(4), selected flow: 5.Broken.Visual inspection: the received extraction screw shows that the threads approximately at the middle section of the conical threaded tip section has broken off.Dimensional inspection: because of the damages the complaint relevant dimensions cannot be checked to print specifications anymore.Drawing/specification review: the investigation has shown that the cause of complained malfunction is a post-manufacturing caused use related damage at the device, therefore no drawing/specification review is needed.Material review: the used material was stainless steel 1.4112 as required and the measured harness was with 647 - 661 hv10 within the specification of 510 - 720 hv10.The broken surface is homogenous what indicates material conformity as well.Summary: the received condition of the device is concordant with the complaint description and the complaint condition is confirmed.The manufacturing review shows that the production procedure was according to the specifications and there were no issues that would contribute to this complaint condition.Based on the provided information we are not able to determine the exact cause of this complaint.We only can assume that exceeding applied mechanical overload during the loosening of a blocked screw caused the breakage of the threads.Please note in surgical technique guide: during insertion ensure that enough axial pressure is exerted and retain the axis.Only use sharp-edged extraction screws (recommendation: one extraction).Do not use extraction screws with power tools.Based on the investigation findings, it has been determined that no corrective and/or preventative action is proposed.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
Event or Problem Description
Device report from synthes europe reports an event in (b)(6) as follows: it was reported that during the decontamination procedure, four (4) devices were discovered to be not functioning.On a conical extraction screw for 1.5mm & 2.0mm cortex screws, the thread was damaged.Two (2) instances of conical extraction screws for 3.5mm screws were broken.A spare reamer tube for hollow reamer was also broken.There was no patient or procedure involvement.This report is for one (1) conical extraction screw for 1.5mm & 2.0mm cortex screws.(b)(4).

• Brand Name: CONICAL EXTRACTION SCREW FOR 1.5MM & 2.0MM CORTEX SCREWS
• Common Device Name: EXTRACTOR
• Manufacturer (Section D): OBERDORF SYNTHES PRODUKTIONS GMBH; eimattstrasse 3; oberdorf 4436 ; SZ 4436
• MDR Report Key: 7757724
• Report Number: 8030965-2018-55532
• Device Sequence Number: 13901464
• Product Code: HWB
• UDI-Device Identifier: 07611819018433
• UDI-Public: (01)07611819018433
• Combination Product (Y/N): N
• Initial Reporter Country: HU
• PMA/510(K) Number: EXEMPT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 06/05/2018

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: 309.510
• Device Lot Number: L759222
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 06/14/2018
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 08/07/2018
• Initial Report FDA Received Date: 08/07/2018
• Patient Sequence Number: 1