The reported event was inconclusive because no sample was returned.Potential root causes for this failure could be: ¿operator error at this workstep ¿contaminants, latex defects or abrasion of balloon after attachment to shaft windows or inclusions over stretched balloon ¿bare proximal wires, excessive exposure from direct sunlight, fluorescent / incandescent light ¿ not enough tension when completing tie.Poor tie technique.Improper trimming of balloon or threads.The device history record was reviewed and found nothing that could have caused or contributed to the reported event.The instructions for use were found adequate and state the following: ''warnings: do not inflate balloon beyond stated maximum inflation capacity of 1.5 ml.Balloon must be completely deflated before withdrawal of the electrode catheter.Precaution: when using a balloon catheter, use care when removing the protective sleeve from the distal portion of the catheter.Forced removal of this protective sleeve may result in damage to the balloon and the catheters structural integrity.Instructions for use: 3.In case of catheters with a balloon, under sterile conditions, remove the protective sheath and inflate the balloon with 1.5 ml of air or carbon dioxide.Use the inflation syringe included in the package.Completely deflate the balloon after the test.7.Using the aid of fluoroscopy or an ecg monitor, advance the catheter through the cannula to the desired position.If using a balloon catheter, inflate the balloon when the catheter is in the right atrium.Please note that the balloon can be inflated or deflated only when the stopcock is parallel to the catheter shaft.Do not pull the catheter back through the cannula as it may cause damage to the catheter.'' h11: section a through f - the information provided by bd represents all 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.H3 other text : the device was not returned.
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