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U.S. Department of Health and Human Services

MAUDE Adverse Event Report: CYBERONICS, INC. BIPOL LEAD MODEL 300

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CYBERONICS, INC. BIPOL LEAD MODEL 300 Back to Search Results
Model Number 300-20
Event Date 03/03/2014
Event Type  Malfunction  
Manufacturer Narrative

Review of manufacturing records confirmed that the lead passed all functional tests prior to distribution. Device failure is suspected, but did not cause or contribute to a death or serious injury.

 
Manufacturer Narrative

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

 
Event Description

Analysis of the generator was completed on (b)(4) 2014. Electrical test results showed that the pulse generator performed according to functional specifications. There were no adverse functional, mechanical, or visual issues identified with the returned generator. Analysis of the lead was completed on (b)(4) 2014. Note that the electrodes were not returned for analysis and therefore a complete evaluation could not be performed on the entire lead product. During the visual analysis of the returned 197mm portion the (+) marked connector quadfilar coil appeared to be broken approximately 25mm and 29mm from the end of the connector bifurcation. Scanning electron microscopy was performed on the (+) marked connector quadfilar coil break (found at 25mm) and identified the area as having extensive pitting which prevented identification of the coil fracture type and residual material. Scanning electron microscopy was performed on the (+) marked connector quadfilar coil break (found at 29mm) and identified the area as being mechanically damaged which prevented identification of the coil fracture type with fine pitting on two of the broken coil strands. Pitting was observed on the coil surface. The abraded openings and slice marks found on the outer silicone tubing and the cut ends that were made during the explanted process, most likely provided the leakage path for the dried remnants of what appeared to have once been body fluids inside the outer silicone tubing. The abraded openings found on the inner silicone tubes and the cut ends that were made during the explanted process, most likely provided the leakage path for the dried remnants of what appeared to have once been body fluids found inside the inner silicone tubes. What appeared to be white deposits were observed in various locations. Eds (energy dispersion spectroscopy ¿ provides chemical or element identity/composition analysis) was performed and identified the deposit as containing silicon, phosphorus, sulphur and calcium. It is believed that stimulation was present for a certain period of time as evidenced by the presence of metal pitting. Low magnification sem analysis of the quadfilar coil shows characteristics typical of a lead discontinuity which may include: material fracture, rough or pitted surface, thinned material thickness, electro-etching or material dissolution. With the exception of the observed discontinuity, the condition of the returned lead portions is consistent with conditions that typically exist following an explant procedure. No other obvious anomalies were noted. The setscrew marks found on the lead connector pin provide evidence that, at one point in time, a good mechanical and electrical connection was present. Continuity checks of the returned lead portions were performed, during the visual analysis, and no other discontinuities were identified.

 
Event Description

It was reported that the vns patient¿s device was tested and diagnostic results revealed high lead impedance (impedance value ¿ 8620 ohms) during an office visit on (b)(6) 2014. The patient recently had some slips and falls. The patient underwent generator and lead replacement surgery due to high impedance on (b)(6) 2014. The generator was also replaced as diagnostic results revealed near end of service. The surgeon noted that there was a lot of scar tissue present. The explanted generator and lead have been returned to the manufacturer where analysis is currently underway. Review of the available programming and diagnostic history showed normal diagnostic results through (b)(6) 2013.

 
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Brand NameBIPOL LEAD MODEL 300
Type of DeviceLEAD
Manufacturer (Section D)
CYBERONICS, INC.
100 cyberonics blvd
houston TX 77058 770
Manufacturer (Section G)
CYBERONICS, INC.
100 cyberonics blvd
suite 600
houston TX 77058
Manufacturer Contact
njemile crawley
100 cyberonics blvd
suite 600
houston , TX 77058
2812287200
MDR Report Key3709847
Report Number1644487-2014-00821
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Source Type Health Professional,Company Representative
Reporter Occupation Physician
Type of Report Initial,Followup
Report Date 03/03/2014
1 Device Was Involved in the Event
0 PatientS WERE Involved in the Event:
Date FDA Received03/28/2014
Is This An Adverse Event Report? No
Is This A Product Problem Report? Yes
Device Operator Lay User/Patient
Device EXPIRATION Date11/30/2003
Device MODEL Number300-20
Device LOT Number4533
Was Device Available For Evaluation? Device Returned To Manufacturer
Date Returned to Manufacturer03/18/2014
Is The Reporter A Health Professional? Yes
Event Location Other
Date Manufacturer Received03/28/2014
Was Device Evaluated By Manufacturer? Yes
Date Device Manufactured11/19/2001
Is The Device Single Use? Yes
Is this a Reprocessed and Reused Single-Use Device? No
Type of Device Usage Initial

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