MAUDE Adverse Event Report: MEDTRONIC NEUROSURGERY STRATA II SHUNT ASSEMBLY, REGULAR; SHUNT, CENTRAL NERVOUS SYSTEM AND COMPONENTS

Model Number	46866
Medical Device Problem Code	Occlusion Within Device (1423)
Health Effect - Clinical Code	Therapeutic Response, Decreased (2271)
Date of Event	11/09/2017
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
If information is provided in the future, a supplemental report will be issued.
Event or Problem Description
It was reported that the left ventriculoperitoneal shunt failed post-operatively.The ventricular catheter was situated, and the distal peritoneal end was in place, but there no flow.The shunt chamber was clogged with proteinaceous debris and this was the cause of the failure.The device was explanted, and the patient's status was alive-no injury.
Additional Manufacturer Narrative
The returned valve was patent.The valve met requirements for the siphon, and preimplantation tests.The valve did not meet the requirements for pressure-flow and reflux testing.There was proteinaceous debris observed within the interior and exterior of the valve.Debris within the valve may hold pressure-flow controlling mechanisms open resulting in fluid reflux and affecting the flow of flu id through the valve.Instructions for use (ifu) that accompany the device caution that ¿shunt obstruction may occur in any of the components of the shunt system.The system may become occluded internally due to tissue fragments, blood clots, tumor cell aggregates, bacterial colonization, or other debris.¿ the returned valve also did not meet the requirements for leak due to a tear in the top of the reservoir.It is unknown how or when this damage occurred.The ifu caution that ¿improper use of instruments in the handling or implantation of shunt products may result in the cutting, slitting, or crushing of components.¿ the ifu also caution that ¿care should be taken in handling the valves as silicone has a low cut and tear resistance.All valves are 100% tested at the time of manufacture.If information is provided in the future, a supplemental report will be issued.

• Brand Name: STRATA II SHUNT ASSEMBLY, REGULAR
• Common Device Name: SHUNT, CENTRAL NERVOUS SYSTEM AND COMPONENTS
• Manufacturer (Section D): MEDTRONIC NEUROSURGERY; 125 cremona drive; goleta CA 93117
• MDR Report Key: 7105588
• Report Number: 2021898-2017-00639
• Device Sequence Number: 11107378
• Product Code: JXG
• UDI-Device Identifier: 00643169975965
• UDI-Public: 00643169975965
• Combination Product (Y/N): N
• Initial Reporter Country: IN
• PMA/510(K) Number: K042465
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Device Explanted Year: 2017
• Reporter Type: Manufacturer
• Report Source: foreign,health professional
• Initial Reporter Occupation: Health Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 04/25/2018

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 05/31/2020
• Device Model Number: 46866
• Device Catalogue Number: 46866
• Device Lot Number: E34620
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/23/2018
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 11/13/2017
• Supplement Date Received by Manufacturer: 04/25/2018
• Initial Report FDA Received Date: 12/11/2017
• Supplement Report FDA Received Date: 04/25/2018
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention