No medical records or no medical images have been made available to the manufacturer.As the lot number for the device was provided, a review of the device history records is currently being performed.The device has been returned to the manufacturer for evaluation.The investigation of the reported event is currently underway.The information provided by bard represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bard.
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Manufacturing review: a manufacturing review was performed.The lot met all release criteria.Visual/microscopic inspection:the sample was returned used.The distal end of the catheter was bunched and twisted in appearance.The catheter was still fully attached to the distal tip with no material separation noted.The sonic connector was not seated inside the nest inside the knob assembly.It is possible that the position of the sonic connector not seating inside the nest was caused by the user not properly disconnecting the crosser from the transducer.No other anomalies were noted along the length of the catheter.Functional/performance evaluation:the patency of the guidewire lumen was tested with an in-house guidewire.The guidewire was loaded through the hub but was unable to be loaded through the distal end of the catheter.A puncture in the outer catheter was noted.The outer catheter was then removed at the location of the outer catheter perforation and the guidewire lumen was found to be twisted and perforated.The perforation was likely due to the twisted guidewire lumen.Medical records review: as medical records were not provided, a review could not be performed.Image/photo review: no medical images have been made available to the manufacturer.Conclusion: the investigation is confirmed for material twisting, as the guidewire lumen was observed to be twisted, resulting in the reported guidewire issues and the puncture in the catheter.The definitive root cause could not be determined based upon the available information.It is unknown if procedural issues during the attachment of the catheter to the transducer contributed to the twisted catheter near the distal tip.Labeling review:the current ifu (instructions for use) states: warnings and precautions:- prior to use, the packaging and product should be inspected for signs of damage.Never use damaged product or product from a damaged package.Set up:- back the rigid portion of the catheter out of the end of the hoop, then carefully unsnap the catheter from the hoop with a gentle twisting motion.- attach the irrigation system to the irrigation lumen on the proximal end of the crosser catheter.- for the crosser catheters 14p, 14s, and 18 only, flush the guidewire lumen of the crosser catheter using a standard 10ml syringe with heparinized saline.Interventional use:- load the crosser catheter 14p, 14s, or 18 over the wire and introduce through rhv.Take care not to damage the tip of the crosser catheter during introduction; no resistance should be encountered during this process.- warning! use extra caution when loading the crosser catheter 18 over a.014¿ or a ¿docking¿ wire, as the significant mismatch in diameters may increase the likelihood of guidewire lumen piercing.
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