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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 09/01/2013
Event Type  Malfunction  
Event Description

The physician reported that the patient may have an issue with the device, but no additional details were provided. It was later reported that the patient will be referred to surgeon for possible revision because the device showed high impedance and end of service. The patient underwent generator and lead replacement on (b)(6) 2013. The lead and generator were returned to manufacturer for analysis. An implant card was received indicating that the patient underwent lead and generator replacement due to "lead discontinuity". Analysis of the generator was completed on (b)(6) 2013. 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)(6) 2013. Note that a portion of the lead assembly was 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 344 mm portion the (+) marked connector quadfilar coil appeared to be broken approximately 2 mm and 3 mm from the connector bifurcation. Scanning electron microscopy was performed on the (+) marked connector quadfilar coil break (found at 2 mm) and identified the area as having evidence of a stress induced fracture (fatigue appearance) with mechanical damage, residual material and no pitting. Scanning electron microscopy was performed on the (+) marked connector quadfilar coil break (found at 3 mm) and identified the area as having evidence of a stress induced fracture (fatigue appearance) with mechanical damage and fine pitting. 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. The abraded openings found on the outer and (-) unmarked inner silicone tubing and the cut ends that were made during the explanted process, most likely provided the leakage path for the remnants of what appeared to have once been body fluids found inside the outer and (-) unmarked inner silicone tubing. For the observed (+) marked connector pin inner tubing remnants of what appeared to have once been body fluids found inside, there was no obvious path for fluid ingress other than the cut ends that were made during the explanted process. 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, sodium, magnesium, potassium, zirconium, sulphur and calcium. Refer to attached eds sheet for additional information. The slice and puncture marks observed on the inner silicone tubes (past the electrode bifurcation) appeared to have been made by a sharp object which could have occurred during the explant procedure, however this cannot be confirmed. With the exception of the observed discontinuities, 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 pins 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.

 
Manufacturer Narrative

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

 
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Brand NameBIPOL LEAD MODEL 300
Type of DeviceLEAD
Manufacturer (Section D)
CYBERONICS INC
100 cyberonics blvd
houston TX 77058
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 Key3551516
Report Number1644487-2014-00058
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Source Type Health Professional,Company Representative
Reporter Occupation
Type of Report Initial
Report Date 09/09/2013
1 Device Was Involved in the Event
0 PatientS WERE Involved in the Event:
Date FDA Received01/03/2014
Is This An Adverse Event Report? No
Is This A Product Problem Report? Yes
Device Operator LAY USER/PATIENT
Device EXPIRATION Date04/30/2005
Device MODEL Number300-20
Device LOT Number8280
Was Device Available For Evaluation? Device Returned To Manufacturer
Date Returned to Manufacturer10/29/2013
Is The Reporter A Health Professional? Yes
Event Location Other
Date Manufacturer Received09/09/2013
Was Device Evaluated By Manufacturer? Yes
Date Device Manufactured04/23/2003
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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