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CYBERONICS, INC. LEAD MODEL 304 Back to Search Results
Model Number 304-20
Event Date 11/18/2013
Event Type  Malfunction  
Event Description

Analysis of the returned generator and lead was completed. A comprehensive automated electrical evaluation showed that the pulse generator performed according to functional specifications. Analysis of the returned lead identified two breaks in the negative coil. The lead assembly has dried remnants of what appear to have once been body fluids inside the inner silicone tubing. No obvious point of entrance was noted other than the identified tubing openings and the ends of the returned lead portions. Incisions in the silicone tubing were necessary to perform proper inspection of the lead coils. An abraded/torn opening was noted in the inner tubing of the negative coil at the break location. Scanning electron microscopy images of the negative coil show that pitting or electro-etching conditions have occurred at the break locations and at the discolored portion of the coil. Also, the negative coil has what appears to be wear (flat surfaces) in the vicinity of the break. However, due to metal dissolution and surface contamination the fracture mechanism cannot be ascertained. Other than the above mentioned observations and typical wear and explant related observations, no other anomalies were identified in the returned lead assembly.

Manufacturer Narrative

Device failure occurred, but did not cause or contribute to death or serious injury.

Event Description

On (b)(6) 2013, high impedance was observed on the patient's implanted vns device. The device was not disabled at the visit. X-rays were ordered. Attempts are being made for additional information; however, no additional information has been received.

Manufacturer Narrative

Device manufacturing records and programming history were reviewed. Review of manufacturing records confirmed the device met all final testing specifications prior to distribution. Device failure is suspected, but did not cause or contribute to a death or serious injury.

Event Description

Additional information was received stating that the vns patient underwent generator and lead replacement surgery on (b)(6) 2014 due to lead discontinuity. The explanted generator and lead have been returned to the manufacturer where analysis is currently underway.

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Brand NameLEAD MODEL 304
Type of DeviceLEAD
Manufacturer (Section D)
100 cyberonics blvd
houston TX 77058 770
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 Key3525114
Report Number1644487-2013-03824
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Source Type Health Professional,Company Representative
Reporter Occupation
Type of Report Initial,Followup,Followup
Report Date 11/19/2013
1 Device Was Involved in the Event
0 PatientS WERE Involved in the Event:
Date FDA Received12/18/2013
Is This An Adverse Event Report? No
Is This A Product Problem Report? Yes
Device Operator LAY USER/PATIENT
Device EXPIRATION Date09/30/2014
Device MODEL Number304-20
Device LOT Number2799
Was Device Available For Evaluation? Device Returned To Manufacturer
Date Returned to Manufacturer04/04/2014
Is The Reporter A Health Professional? Yes
Event Location Other
Date Manufacturer Received04/28/2014
Was Device Evaluated By Manufacturer? Yes
Date Device Manufactured09/15/2010
Is The Device Single Use? Yes
Is this a Reprocessed and Reused Single-Use Device? No
Type of Device Usage Initial