H11: section a through f - the information provided by bd 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 bd.The following were reviewed as part of this investigation: patient severity, complaint and batch history, applicable previous investigation(s), labeling, applicable manufacturing records, sample analysis and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of a break in the catheter was confirmed but the cause is unknown.The product returned for evaluation was an assembled proximal and distal two-piece connector from a 4fr s/l groshong nxt catheter.The distal catheter shaft was not returned for evaluation.The connection between the proximal and distal pieces appeared tight, with the locking arms engaged within the grooves.No breaks or splits were noted in the returned section of the device under gross visual examination.However, when microscopic examination was conducted, a small piece of groshong catheter (0.39¿ long) could be seen within the two-piece connector.This indicated that the tubing broke rather than dislodged.The distal end of the catheter segment was jagged, and it contained a dull finely granular surface.The wall thickness of the catheter was measured, and it was confirmed that the catheter wall thickness met the device specifications.No molding defects were seen along the inner bore of the distal piece of the two-piece connector.The distal end of the proximal piece cannula appeared properly radiused and void of slivers or burrs.The length and outer diameter of the cannula met the device specifications.Although it could be confirmed that the catheter had broken, the exact cause could not be determined at this time.Possible contributing factors include tensile (pulling) damage, catheter wear on the proximal piece cannula, catheter damage due to improper connection of two-piece connector (e.G.Catheter kinked on cannula during assembly), mechanical stresses, or material fatigue.H3 other text : evaluation findings are in section h.11.
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