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Device evaluation details: the device was returned for evaluation.Johnson & johnson medtech conducted a visual inspection, temperature and impedance testing of the returned catheter.Visual analysis revealed reddish material and a hole on the surface of the pebax.Temperature and impedance testing was performed per johnson & johnson medtech procedures, and inconsistent temperature readings were observed.Therefore, per this condition it can be determined that there is a loss of the thermocouple circuit inside the tip, showing leakage when the device is deflected and loss of continuity when the device is undeflected.A manufacturing record evaluation was performed for the finished device and no internal actions related to the reported complaint condition were identified.The reddish material inside the pebax could be related to the temperature sensor issue reported by the customer; therefore, the customer complaint was confirmed.The root cause of the pebax damage could be related to the manipulation of the device during the procedure; however, this cannot be conclusively determined.The product instructions for use contain the following recommendations: to minimize the temperature issue, the following guidelines should be followed.Monitor the catheter tip temperature throughout the procedure to ensure adequate irrigation.If the temperature increases to 40°c during rf energy delivery, power delivery should be interrupted.For the damage on the pebax the catheter instruction for use (ifu) contains the following warnings and precautions: when cleaning the tip electrode, be careful not to twist the tip electrode with respect to the catheter shaft; twisting may damage the tip electrode bond and loosen the tip electrode or may damage the contact force sensor.In addition, to prevent damage to the catheter tip, use the insertion tube supplied with the catheter to advance or retract the catheter through the hemostasis valve of the sheath.After insertion, slide the insertion tube back toward the handle.As part of johnson & johnson medtech¿s quality process, all devices are manufactured, inspected, and released to approved specifications.If additional information is received regarding this event, a supplemental 3500a report will be submitted to the fda.Manufacturer's ref.#: (b)(4).
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