SMITH & NEPHEW ORTHOPAEDICS AG POLARCUP SHELL TI-PLASMA/HA 55 NON-CEM; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/CERAMIC/POLYMER, CEMENTED OR NON-POROUS
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Catalog Number 75100442 |
Device Problem
Physical Resistance/Sticking (4012)
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Patient Problem
No Clinical Signs, Symptoms or Conditions (4582)
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Event Date 09/18/2023 |
Event Type
malfunction
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Manufacturer Narrative
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Internal complaint reference: (b)(4).
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Event Description
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It was reported that during a thr surgery, in one (1) polarcup shell ti-plasma/ha 55 non-cem the locking screw does not come off.The procedure was resumed, after a significant delay, with a s+n back-up device.Patient was not injured as consequence of this problem.
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Manufacturer Narrative
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Section h10: it was reported that during a total hip replacement (thr) surgery, in one (1) polarcup shell ti-plasma/ha 55 non-cem the locking screw does not come off.The procedure was resumed, after a significant delay, with a s+n back-up device.Patient was not injured as consequence of this problem.The complaint sample was returned for investigation.Upon visual inspection, the remaining screw head appeared to be heavily damaged.The other screw has been unscrewed and this screw head appears to be intact.The review of historical complaints for the alleged device revealed no additional similar complaints reported for the same batch, and additional similar complaints for the same product number over the past 12 months with similar failure mode.A review of the product documentation did not detect any deviation that could have contributed to the reported failure mode.A review of past corrective actions was performed.No further escalation is required.A review of the risk management documentation verifies the failure mode, occurrence and severity of the reported issue.Based on the available information and the performed investigation, the complaint could be confirmed.The root cause for the reported jamming cannot clearly be identified and stays undetermined.The surgical technique (lit no.01620-en (1582) v8 10/21) describes the correct removal of the polarcup plugs using the unidirectional t handle (75023347): "release the plugs by turning the t-wrench in the direction indicated on the plug cover." a worn t-handle is known to contribute to the reported event.According to document "processing (cleaning, disinfection and sterilization) of instruments from smith & nephew orthopaedics ag" (lit.N°03389-en 1363 v3 11/19), all devices must be inspected and controlled for proper functioning after cleaning/disinfection.The need for corrective action is not indicated.Smith+nephew will continue to monitor this device for similar issues.The returned complaint sample will be scrapped.Internal complaint reference number: (b)(4).
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