The outer of the 9x40 precise pro rx was being retracted for stent deployment.However, it was too stiff to be deployed.The precise pro rx was replaced with another precise pro rx and the procedure completed.The stent deployment was attempted outside the patient, the physician felt resistance that was not the hardness to push out the stent before it was deployed.The device will be returned for evaluation.There was no reported injury to the patient.The device was returned for analysis.A non-sterile unit of ¿precise pro rx ous carotid sys¿ was received for analysis coiled inside of a clear plastic bag.The device was unpacked and was placed at one metallic tray to be inspected.The unit was thoroughly inspected observing the following conditions: the stent is partially deployed; the hemostasis valve was received tight closed; the unit does not present damages.No other outstanding details were observed.The stroke length and the usable length were found within specification.Functional analysis was performed to determine if the stent can be deployed as expected.The hemostasis valve was unlocked of the stent delivery system.The stent deployment functionally test was initiate by retracting the outer sheath while holding the inner shaft in a fixed position.The push rod travel toward the distal tip as expected and the stent was deployed.The stent expands normally presenting no damages or anomalies.A product history record (phr) review of lot 18119917 revealed no anomalies or non-conformances during the manufacturing and inspection processes that can be associated with the reported event.The reported ¿stent delivery system (sds)~ deployment difficulty-unable¿ was not confirmed, the functional test was performed as expected not noticing any anomalies.However, a partial deployment condition was observed on the returned device.The exact cause of this condition observed on the device could not be conclusively determined during the analysis.Procedural and/or handling factors might have contributed to this issue.According to the instructions for use (ifu) ¿if resistance is encountered at any time during the insertion procedure, do not force passage.Resistance may cause damage to stent or system.If resistance occurs during movement through the sheath, carefully withdraw the stent system.Once stent deployment has begun, the stent must be fully deployed.The system is not designed for stent repositioning or recapturing.If resistance is felt when initially retracting the outer deployment sheath do not force deployment.Carefully withdraw the stent system without deploying the stent.¿ the product analysis does not suggest that the found damages could be related to the manufacturing process of the unit.Therefore, no corrective or preventive actions will be taken at this time.
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As reported, the outer of the 9x40 precise pro rx was being retracted for stent deployment.However, it was too stiff to be deployed.The precise pro rx was replaced with another precise pro rx and the procedure completed.There was no reported injury to the patient.The stent deployment was attempted outside the patient, the physician felt resistance that was not the hardness to push out the stent before it was deployed.The device will be returned for evaluation.Additional information was requested; however, the information was not obtained after multiple attempts.
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