The sensor was returned and evaluated by the supplier.The supplier's investigation also included a review of manufacturing records, which found that the device met all manufacturing and quality testing/inspection specifications prior to distribution.The evaluation of the device found that there was film over the sensor area, the connector was dirty, there was foreign residue inside the connector and suture attached to the catheter material.The device was tested and passed all electronic, noise, linearity/hystersis and signal drift tests.The supplier was unable to confirm the reported failure.Based on the results of this investigation no further action is required.Trends will be monitored for this and similar complaints.At the present time this complaint is closed.
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