It was reported that the recanalization catheter tip melted during use on the pt.The length of activation was approximately 5 minutes.During retraction of the recanalization catheter through the support catheter, the recanalization catheter became lodged in the support catheter.Both the recanalization catheter and support catheter had to be removed as a single unit.Upon withdrawal, the two devices were separated and it was found that the recanalization catheter was melted.The support catheter reportedly had a flattened area on it as well.Another recanalization catheter and support catheter were used to complete the procedure.No report of injury to the pt.
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A further clinical review of this event was performed and identified the event to be mdr reportable pursuant to 21 cfr part 803.A mfg review was conducted.The lot met all release criteria.The catheter and support catheter were returned.The investigation is confirmed for retraction issues as the catheter could not be removed from the support catheter.The investigation is inconclusive for melting due to poor sample condition (i.E.The catheter could not be fully examined as it could not be removed from the support catheter).However, no evidence of melting was present on the visible exterior of either device.Per the complaint comments, the activation was approximately 5 minutes.Per the ifu, the activation time should not exceed 5 minutes.As it is unk if the activation time exceeded 5 minutes, it is possible this contributed to the reported failure.However, the definitive root cause could not be determined based upon the available info.It is unk if pt and/or procedural issues contributed to the reported event.
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