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CYBERONICS, INC. LEAD MODEL 302 Back to Search Results
Model Number 302-30
Device Problems Fracture; High impedance
Event Date 02/09/2017
Event Type  Malfunction  
Event Description

It was reported that high impedance was found on the patient's device when interrogated. The patient had an x-ray performed where it was stated no break could be seen. The x-rays have not been reviewed by the manufacturer to date. The patient was referred for a lead replacement due to the high impedance. No surgical intervention is known to have occurred to date. No additional relevant information has been received to date.

Event Description

It was reported that the patient underwent surgery where the vns generator was replaced and the high impedance resolved. No fractures were observed at the time of the surgery so the lead was not initially replaced. The explanted generator was tested on its own and found to be functioning properly. After the surgery the device was programmed on and intermittent high impedance was observed. This indicated that there might be an intermittent microfracture. The patient was returned to the operating room and the lead was replaced. Impedance was then within normal limits with the new lead and generator. The explanted lead and generator was discarded following the surgery.

Event Description

The manufacturer received two user facility medwatch reports related to the events previously captured in this report, (b)(4).

Event Description

It was reported that the explanted products were actually not discarded and were available for return. The products have not been received to date.

Manufacturer Narrative

Corrected data: describe event or problem; "the explanted lead and generator were received" this information was inadvertently left off on mfg. Report #3. Corrected data: device available for evaluation?; this information was inadvertently left off on mfg. Report #3.

Event Description

The explanted lead and generator were received and underwent product analysis. The generator performed to functional specification during analysis. No anomalies were observed during a series of diagnostic tests and interrogations. It was noted only a portion of the lead was received and the segment did not contain the electrodes. Upon visual analysis it was found that the lead¿s pin had two full sets of set screw marks, indicating proper contact between the generator and lead had existed at one point in time. However there was a single set screw mark near the end of the lead pin which indicated that proper contact was not occurring at one point in time. It was unclear when this partial connection occurred. The lead's connector boot was partially detached and there were abrasions near the connector boot. The reason for the partial detachment and abrasions was unknown. Abrasions were noted in the outer tubing in multiple locations and there was fluid inside the inner and outer tubing. The only obvious point of entry was the end of the lead that had been cut during the explant and the abrasions in the outer tubing. Continuity testing was performed on the lead and no discontinuities were identified within the returned lead portion. Other than the abraded outer insulation, no other anomalies were identified in the lead.

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Brand NameLEAD MODEL 302
Type of DeviceLEAD
Manufacturer (Section D)
100 cyberonics blvd
houston TX 77058
Manufacturer (Section G)
100 cyberonics blvd
suite 600
houston TX 77058
Manufacturer Contact
njemile crawley
100 cyberonics blvd
suite 600
houston , TX 77058
MDR Report Key6603299
Report Number1644487-2017-03901
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Reporter Occupation
Type of Report Initial
Report Date 09/28/2017
1 Device Was Involved in the Event
0 PatientS WERE Involved in the Event:
Date FDA Received05/31/2017
Is This An Adverse Event Report? No
Is This A Product Problem Report? Yes
Device Operator LAY USER/PATIENT
Device EXPIRATION Date06/01/2009
Device MODEL Number302-30
Device LOT Number200269
Was Device Available For Evaluation? Device Returned To Manufacturer
Date Returned to Manufacturer08/31/2017
Is The Reporter A Health Professional? Yes
Was the Report Sent to FDA?
Device Age11 yr
Date Manufacturer Received09/05/2017
Was Device Evaluated By Manufacturer? Yes
Date Device Manufactured06/28/2006
Is The Device Single Use? Yes
Is this a Reprocessed and Reused Single-Use Device? No
Type of Device Usage Initial