BOSTON SCIENTIFIC CORPORATION ULTRAFLEX TRACHEOBRONCHIAL; PROSTHESIS, TRACHEAL, EXPANDABLE
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Model Number M00564830 |
Device Problems
Positioning Failure (1158); Material Deformation (2976)
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Patient Problem
No Consequences Or Impact To Patient (2199)
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Event Date 07/05/2020 |
Event Type
malfunction
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Manufacturer Narrative
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(b)(4).A deployed utlraflex tracheobronchial covered stent was received for analysis; the delivery system was not returned.Visual inspection was performed and it was found that the loops of the stent were bent.The outer diameter (od) and length of the stent were measured and were found to be within specification.No other issues were noted to the stent.The reported events of stent failure to deploy and shaft kinked were not confirmed; the stent was received completely deployed and the delivery system was not returned.Additionally, the loops of the stent were bent; however, there is not sufficient information about what could be the cause for this failure.Taking all available information, there is no indication of what the customer reported because the stent was returned completely deployed and the shaft was not returned.Therefore, a review and analysis of all available information indicated the most probable cause is no problem detected.A review of the manufacturing documentation for this device revealed that no anomalies or deviations related to the event occurred during manufacturing.
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Event Description
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It was reported to boston scientific corporation that an ultraflex tracheobronchial covered distal release stent was to be implanted to treat an organic stenosis in the main bronchus during an transfiberscope stent implantation procedure performed on (b)(6) 2020.According to the complainant, during the procedure, when the stent was advanced into the main bronchus, it was noted that the delivery shaft was kinked and the stent was unable to deploy.Reportedly, the stent was fully covered by the deployment suture on the delivery system when it was removed from the patient.The procedure was completed with another ultraflex tracheobronchial stent.There were no patient complications reported as a result of this event.The patient condition following the procedure was reported to be stable.Note: this event has been deemed an mdr reportable event based on the investigation results which revealed that the loops of the stent were bent.
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