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CYBERONICS, INC. LEAD MODEL 304 Back to Search Results
Model Number 304-20
Event Date 09/24/2014
Event Type  Injury  
Manufacturer Narrative

Event Description

On (b)(6) 2016 the physician indicated that the patient's chocking sensation is from misfiring of the vns. He said that the memory issues are not applicable. All diagnostics were reported to be within normal limits with the last one performed on (b)(6) 2016. The physician turned off the patient's vns and the patient is considering having it removed and probably not replaced. The patient does not have a medical history of these events prior to vns. The only event preceding the onset of the chocking/painful stimulation is replacement of the vns. It was previously reported that the patient underwent a full revision on (b)(6) 2014 due to issue following a mammogram. The patient is still having discomfort in the neck with stimulation, so the physician indicated that he would like contact information for a vns surgeon for another opinion as the previous surgeon stated he would not do another revision for the patient. It was reported that a system diagnostics test had not been performed after the recent complaint of painful stimulation. Additional information was requested from the physician but no further information was received regarding whether diagnostics were performed since the replacement. On (b)(6) 2016 the patient's mother reported that the patient has been experiencing painful stimulation as well as profound breathing issues since the generator revision. The breathing issues are described as a strong choking sensation leading to gasping and can last up to 30 seconds at a time. The patient then reported that this issue typically presents when she turns her head to the left or the right and that it has happened "thousands of times" so she is used to the effects. She also is experiencing memory issues. The patient stated that she is now having an increase in seizures since her device was turned off on (b)(6) 2016. She said that at this time, she wants her system replaced because of the shocking and not wanting to have the stimulation turned back on. The patient noted that the magnet is still programmed on. She then indicated that she never had a problem with the previous system and when it was turned on following replacement, she started to feel shocking that was more over the generator site in the shoulder. The issues were also indicated as not occurring with stimulation on-times but always happened and resolved when the generator was programmed off. The patient said that her phrenic nerve is being stimulated per her neurologist, but it wasn't clear how he determined this. She indicated that when the magnet was swiped the day after it was painful, which is why she doesn't want to turn it back on. The patient stated that there is no room on the nerve because the surgeon removed part of her vagus nerve and stitched it back together, which she was insistent that this occurred as the surgeon told her this. The patient said that the old system was completely removed according to the x-rays. On (b)(6) 2016, a physician reported that the patient was hospitalized due to the increased in seizures. He said the primary reason for disablement was painful stimulation, shocking in her neck that occurred when she turned her head.

Manufacturer Narrative

Inadvertently reported incorrect age on initial report.

Event Description

On 5/17/16 the physician reported that the patient did have a portion of their vagus nerve removed and then stitched back together again on (b)(6) 2014 during the full revision surgery that day.

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Brand NameLEAD MODEL 304
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 Key5498371
Report Number1644487-2016-00544
Device Sequence Number1
Product CodeLYJ
Report Source Manufacturer
Type of Report Initial,Followup,Followup
Report Date 02/22/2016
1 Device Was Involved in the Event
0 PatientS WERE Involved in the Event:
Date FDA Received03/14/2016
Is This An Adverse Event Report? Yes
Is This A Product Problem Report? No
Device Operator LAY USER/PATIENT
Device EXPIRATION Date03/31/2018
Device MODEL Number304-20
Device LOT Number3888
Was Device Available For Evaluation? No
Is The Reporter A Health Professional? Yes
Was the Report Sent to FDA?
Event Location Other
Date Manufacturer Received05/17/2016
Was Device Evaluated By Manufacturer? Device Not Returned To Manufacturer
Date Device Manufactured03/31/2014
Is The Device Single Use? Yes
Is this a Reprocessed and Reused Single-Use Device? No
Type of Device Usage Initial