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Visual inspection performed october the 30th, 2018 by the r&d project manager: one out of the four retaining pins (interface to the implant - pedicle screw head) are missing, due to failure of the welding.The cause of pin breakage can be excessive stress related to excessive reduction force applied and/or other forces (e.G.Lateral bending), or existing damage/deformation of the pin from a previous surgery.The instrument set includes backup instruments.Batch review performed on november 6, 2018: lot 1850157: (b)(4) items manufactured and released on 27 june 2018.No anomalies found related to the issue.To date, no similar event on the same lot has been registered.Additional components involved: pedicle screw 03.50.031 pedicle screw 7x45, lot 1820670: 150 items manufactured and released on 30 august 2017.Expiration date: 2023-08-19.No anomalies found related to the problem.To date,(b)(4) items of the same lot have been already sold without any similar reported event.Pedicle screw 03.50.031 pedicle screw 7x45, lot.1820671: 150 items manufactured and released on 7 august 2018.Expiration date: 24.07.2023-07-24.No anomalies found related to the problem.To date, (b)(4) items of the same lot have been already sold with a similar reported event (3 items involved).
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During surgery at l3-s1, the surgeon tried to insert the 6 pedicle screws with the two-step reducer enhanced.He was able to insert only 1 set screw and then the pin of the tip broke during the insertion at l4.The surgeon discovered the broken piece during the surgery.The two-step reducer broke while the surgeon was tightening either lot 1820670 or 1820671.No debris has fallen into the patient, the surgery has been completed with a back-up instrument.Because of this issue, the surgery was prolonged of 15 minutes.
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