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Batch review performed on 01-10-2025.Lot: 1410893aba: (b)(4) items manufactured and released on 11-08-2016 no anomalies found related to the problem.To date, no similar events have been reported on the same lot during the period of review.Investigation performed by r&d department pedicle screwdriver broke on the torx t20 interface with the screw, with a 45° angle, sign of excessive torque applied.The broken tip of the screwdriver was found inside the screw.For the pedicle screwdriver, breakage can occur in case of high insertion torque, typically related to large diameter screws ([?] 7mm), long screws ([?] 60mm), and/or hard bone (e.G.Sacral bone, sclerotic bone).In this case: screw size: ø6x45, tapping: ø6 undersized, bone quality: normal, level: s1.The instrument set includes two screwdrivers and another screwdriver (ref 03.51.10.0140 or equivalent) to complete the surgery in case of breakage.The strength of the tip of the screwdriver is determined by the dimension of the interface (hexalobe t20) and the material (aisi 420 mod), which are comparable to predicate devices.Geometrical features are driven by the implant design and are equivalent to similar products in the market.The material is among the strongest for such application in terms of strength and hardness.Breakage of the tip may have occurred due to high insertion torque resulting from the combined factors of screw diameter, bone condition, and the specific conditions of the screw hole preparation, in combination with the inherent mechanical limits of the devices involved.The device history record review does not indicate any potentially related manufacturing issue.
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