STRYKER GMBH 3.0MM ASNIS MICRO, CANNULATED DRILL 2.1MM, AO COUPLING; ORTHOPEDIC MANUAL SURGICAL INSTRUMENT
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Model Number 45-30005S |
Device Problems
Bent (1059); Break (1069)
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Patient Problem
No Known Impact Or Consequence To Patient (2692)
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Event Date 04/23/2018 |
Event Type
malfunction
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Manufacturer Narrative
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Once the investigation has been completed any additional information will be reported in a supplemental report.
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Event Description
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A cannulated drill bit cod.45-0005s broke during the osteosynthesis of tibial malleolus fracture.During the perforation of the malleolus, using the dedicated guidewire, a fragment of the helioid portion of the drill was detached from it and remained in situ.Once the bur has been removed from the malleolus, the damaged helical portion was slightly bent.It was not possible to remove the fragment, but this did not prevent the osteosynthesis of the malleolus with an asnis micro screw d.3.0, as planned.
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Event Description
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A cannulated drill bit cod.45-0005s broke during the osteosynthesis of tibial malleolus fracture.During the perforation of the malleolus, using the dedicated guidewire, a fragment of the helioid portion of the drill was detached from it and remained in situ.Once the bur has been removed from the malleolus, the damaged helical portion was slightly bent.It was not possible to remove the fragment, but this did not prevent the osteosynthesis of the malleolus with an asnis micro screw d.3.0, as planned.
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Manufacturer Narrative
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The reported event that 3.0mm asnis micro, cannulated drill 2.1mm, ao coupling was alleged of 'breakage during surgery' could be confirmed.Based on investigation, the root cause was attributed to be user related.The failure was caused by too much mechanical during the drilling process (possibly too much angulation during drilling).Unfortunately no further details could be obtained despite multiple attempts.The device inspection revealed the following: the tip of the returned drill bit is indeed badly bent / stripped and almost completely broken off.These damages clearly indicate that far too much mechanical force (possibly drilling on an angle) had been applied during drilling and caused the damages of the tip (caught up on the guide wire).The ao coupling part is still intact though.A review of the device history for the reported lot did not indicate any abnormalities.No corrective actions are required at this time.A review of the labeling did not indicate any abnormalities.No indications of material, manufacturing or design related problems were found during the investigation.If any further information is provided, the investigation report will be updated.
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