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CYBERONICS, INC. LEAD MODEL 302 Back to Search Results
Model Number 302-20
Event Date 12/15/2014
Event Type  Malfunction  
Event Description

It was reported that the vns patient¿s device showed high impedance. The patient had also been experiencing an increase in seizures. The patient was sent for x-rays and referred for surgery. No known surgical interventions have occurred to date.

Event Description

An implant card was received indicating that the vns patient underwent generator and lead replacement surgery on (b)(6) 2015. The explanted devices have not been returned to date.

Event Description

The explanted generator and lead were returned to the manufacturer for analysis which confirmed discontinuity of negative quadfilar coil in the body region of the returned lead portion. Scanning electron microscopy was performed and identified the areas as being mechanically damaged which prevented identification of the coil fracture type with pitting. Pitting was observed on the coil surface. Abraded openings of both outer and inner tubing were observed near the break location. The abraded opening and tear found on the outer and inner silicone tubes most likely provided the leakage path for the dried remnants of what appeared to have once been body fluids found inside the outer and inner silicone tubes. There were no performance or any other type of adverse conditions found with the pulse generator. Various electrical loads were attached to the pulse generator and results of diagnostic tests demonstrate that accurate resistance measurements were obtained in all instances. A comprehensive automated electrical evaluation showed that the pulse generator performed according to functional specifications.

Manufacturer Narrative

Device failure is suspected, but did not cause or contribute to a death.

Manufacturer Narrative

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

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Brand NameLEAD MODEL 302
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 Key4410130
Report Number1644487-2015-03596
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Source Type Health Professional,Company Representative
Type of Report Initial,Followup,Followup
Report Date 12/15/2014
1 Device Was Involved in the Event
1 Patient Was Involved in the Event
Date FDA Received01/12/2015
Is This An Adverse Event Report? Yes
Is This A Product Problem Report? Yes
Device Operator LAY USER/PATIENT
Device EXPIRATION Date06/30/2008
Device MODEL Number302-20
Device LOT Number1136
Was Device Available For Evaluation? Device Returned To Manufacturer
Date Returned to Manufacturer03/10/2015
Is The Reporter A Health Professional? Yes
Event Location Other
Date Manufacturer Received03/10/2015
Was Device Evaluated By Manufacturer? Yes
Date Device Manufactured06/10/2005
Is The Device Single Use? Yes
Is this a Reprocessed and Reused Single-Use Device? No
Type of Device Usage Initial

Date Received: 01/12/2015 Patient Sequence Number: 1