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Since the product was not returned for analysis, no product failure analysis can be conducted and no determination of possible contributing factors could be made.As such, the investigation will be closed.If the complaint device is received in the future, we will reopen the complaint and perform the investigation as appropriate.The device history record (dhr) was reviewed and no discrepancies were noted related to reported issue.(b)(4).
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It was reported that a patient underwent an arthroscopic knee procedure with a shaver blade full-radius resector large hub yellow and the shaver broke into two pieces with no fragments while in use inside of the patient.There were considerable biological contaminants present and indications of use.The device's outer part shaft was bent to a significant degree.This is indicative of excessive force on the device's structure, likely from excessive torquing of the product while in use.The distal portion of the inner part was still lodged up inside the shaft of the outer part.It was removed for further evaluation.There was significant scouring of the surface just above the point where the shaft split apart.The split is clean and there is no jagged piece - the point of severance appears to be at a butt weld joint (where two pieces are welded together on the same plane).The scouring marks are indicative of the outer part making metal-on-metal contact while the outer shaft was bending.The pressure resulting in the weld joint to fail and split apart.There was also observed damage to the cutting surface area.While the area appears bent and gouged, no conclusion could be made as to whether the device made contact with another metal device or hard object.The instructions for use for reprocessed powered arthroscopic accessories, which provides various warnings and precautions, is noted to state, "do not contact cutters, shavers, or burrs with metal objects as this may cause the device to break or shed metal.Excessive ¿side-loading¿ on the blade during use does not improve cutting performance, and in extreme cases, may result in wear and degradation of the inner blade.Excessive pressure may cause cutters, shavers, or burrs to bend or break which may in turn cause harm to the patient and / or operating room staff." the product was returned with the inner shaver part broken in twain.As the damage occurred while the device was being used, no conclusion could be determined as to the cause, though the failure modes and effects analysis for orthopedic shavers, notes that device malfunction, physician misuse, misalignment of shaft with the sleeve, are possible causes for such a failure.No discrepancies noted related to reported issue during device history record review.(b)(4).
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