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It was reported that there was an issue with an activ l pe-inlay 8.5mm (reference mdr id 2916714-2020-00284), an activ l sup.Plate size m 6°/spikes (reference mdr id 2916714-2020-00283), and an activ l inf.Plate s1 size m 5°/spikes, for an active l prosthetic disc implant.According to the complaint description the implant migrated 8 weeks postoperative.The implant migrated anteriorly.No issues on two week postoperative x-ray images and no issues in the surgery.A revision surgery was necessary.Additional information has been requested but not yet received as of this report.The adverse event is filed under aag reference (b)(4).
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Associated medwatches: 2916714-2020-00282, 2916714-2020-00283, 2916714-2020-00284.Reference code (b)(4).Device name activ l pe-inlay 8.5mm.Serial number n/a.Batch number 52556405.Udi device identifier (b)(4).Udi production identifier (b)(4).Basic udi-di n/a.Unit of use udi-di (b)(4).Manufacturing date 11.10.2019.Reference code (b)(4).Device name activ l inf.Plate s1 size m 5°/spikes.Serial number n/a.Batch number 52496212.Udi device identifier (b)(4).Udi production identifier (b)(4).Basic udi-di n/a.Unit of use udi-di (b)(4).Manufacturing date 13.05.2019.Reference code (b)(4).Device name activ l sup.Plate size m 6°/spikes.Serial number n/a.Batch number 52552035.Udi device identifier (b)(4).Udi production identifier (b)(4).Basic udi-di n/a.Unit of use udi-di (b)(4).Manufacturing date 02.01.2020.Investigation: no product at hand.Pictorial documentation: no product at hand.Batch history review: the device quality and manufacturing history records (dhr) have been checked for all available lot numbers and the products found to be according to our specification valid at the time of production.There is one similar complaint against lot number 52556405 (b)(4) at hand.Explanation and rationale: due to the circumstances we did not receive any devices for investigation and the lack of information it is not possible to determine a definitive conclusion and root cause for this failure.Conclusion and root cause: due to the current deviation and according to the rationale, the root cause of the problem is most probably patient and usage related.Because there are no products and only minor information available, a definitive root cause analysis is not possible.Following causes are possible: wrong system configuration selected by the user, wrong implant size chosen by the user, design layout unsuitable, inadequate patient behavior, maybe implant not in the correct position, not the correct system for the purpose.Corrective action according to sa-de13-m-4-2-04-000-0 (corrective action & preventive action) there is no capa necessary.
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