It was reported that during the implant procedure, the physician had difficulty passing the left ventricular (lv) lead through the guidewire. it was noted that ¿when removed to check its state¿, blood was observed in the interior of the lead. it was also noted that at some point the lead was damaged, which didn't allow its progression through the guidewire. the lead was not used, and another lead was implanted. no patient complications have been reported as a result of this event.
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Product event summary: the full lead was returned and analyzed.Analysis indicated there was blood on the distal conductor of the lead and it was obstructed.The tip seal on the distal electrode of the lead showed evidence of blood ingression.The analyst noted the guidewire was not returned with the lead.Using a guidewire sample to perform insertion test, the sample of zinger light guidewire was failed at 86 cm from the is-1 pin.Destructive analysis was performed and found blood obstruction in coil lumen.By design, left heart leads are manufactured with a septum in the tip that will sometimes allow blood ingress.No insulation breach was observed.Medtronic is submitting this report to comply with fda reporting regulations under 21 cfr parts 4 and 803.This report is based upon information obtained by medtronic, which the company may not have been able to fully investigate or verify prior to the date the report was required by the fda.Medtronic has made reasonable efforts to obtain more complete information and has provided as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.In particular, this report does not constitute an admission by anyone that the product described in this report has any ¿defects¿ or has ¿malfunctioned¿.These words are included in the fda 3500a form and are fixed items for selection created by the fda to categorize the type of event solely for the purpose of regulatory reporting.Medtronic objects to the use of these words and others like them because of the lack of definition and the connotations implied by these terms.This statement should be included with any information or report disclosed to the public under the freedom of information act.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.A good faith effort will be made to obtain the applicable information relevant to the report.If information is provided in the future, a supplemental report will be issued.
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