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As reported, multiple new/unused infiniti guide catheters were observed with flakes inside their sealed packaging, as if the plastic or coating had disintegrated.The flaking appeared localized just below the hub of the devices.No patient injury was reported.The devices had been stored and handled in accordance with the instructions for use.Specifically, they were stored in transparent glass-door cabinets within the cath lab rather than in their original outer boxes.The storage environment was climate-controlled, and the devices were not reprocessed or resterilized.However, they were exposed to ambient and ultraviolet (uv) sanitizing light during storage following procedural use of other devices in the vicinity.All nine returned sterile devices involved in this event were received in their original sealed pouch and contained within a secondary plastic bag.Visual inspection revealed pulverization of the strain relief, with loose material fragments present inside the pouches.Yellowish discoloration was observed on the catheter hub, and kinked/bent sections were noted corresponding to fold lines in the device pouch.No other visual anomalies were identified.Microscopic analysis focused on strain relief and hubs.The yellowish discoloration was confirmed to be unique to the returned devices when compared with a lab sample of a similar diagnostic catheter, which did not exhibit the same discoloration.Additionally, scratches were observed on some of the hubs.No other microscopic anomalies were found.Dimensional measurements were not performed to avoid further damage or alteration to the compromised strain relief area, ensuring the device remains available for future investigative testing.Based on the observed mechanical damage and discoloration, environmental stressors such as uv exposure, elevated temperatures, or chemical interaction are considered potential contributors, though a definitive root cause could not be established.The reported ¿strain relief-degradation¿ was observed on all nine devices during product analysis.The discoloration and pulverization patterns suggest the device may have been subject to prolonged or cumulative exposure to environmental factors.According to the instructions for use (ifu), the product should be stored in a cool, dark, dry place, and it specifically warns against exposing the device to organic solvents or elevated temperatures exceeding 54°c (130°f).Additionally, reprocessing or resterilization should not be performed.While it is not confirmed whether the uv sanitizing light used in the lab exceeded these conditions, the observed physical deterioration is consistent with material fatigue or environmental impact.Based on the available information and product analysis, the cause of the strain relief degradation could not be determined; however, it is potentially related to the manufacturing process of the unit.Therefore, a risk assessment has been initiated to further review the potential causes.No further action will be taken at this time.
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