MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG SHUNTASSISTANT 20; HYDROCEPHALUS MANAGEMENT

Model Number	FV251T
Medical Device Problem Code	Infusion or Flow Problem (2964)
Health Effect - Clinical Code	Hydrocephalus (3272)
Date of Event	04/26/2022
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Manufacturing and quality control data the shuntassistant® was manufactured by a qualified employee in september 2016.Deviations during assembly did not occur.The valve was sterilized by miethke and released for shipment after final inspection.The shuntassistant® has a fixed/ normal pressure range of 20 cmh2o.The valve was inspected as article fv251t.All parameters have been inspected and approved during the manufacturing process.All parameters have been assessed as meeting specifications.Visual inspection no significant deformations or damage of the valve were detected during the visual inspection.Permeability test.A permeability test has shown that the valve is permeable.Computer controlled test.To investigate the claim of over/under-drainage, the opening pressure is measured using a miethke computer controlled testing apparatus which simulates a cerebrospinal fluid flow.The results show that the valve operates within the accepted tolerance in both positions.Internal inspection.After dismantling of the valve, some deposits were found in shuntassistant® results.Based on our investigation, we are unable to substantiate the clinical claim of over-drainage.At the time of our investigation, the valve was operating within the specified tolerances.However, it is possible that the deposits observed inside the valve could have caused the malfunction in the past.As described in scientific literature, the problem encountered is one of the known, inevitable risks of hc-therapy by shunt implants.We can exclude a defect at the time of release.The valve met all specifications of the final inspection when released from christoph miethke gmbh & co.Kg.No further regulatory actions are required from our point of view.
Event or Problem Description
It was reported that a shuntassistant 20 was implanted during a procedure performed on (b)(6) 2016.According to the complainant, the shunt system was believed to be operated in underdrainage and was difficult to adjust.The patient underwent a revision procedure on (b)(6) 2022.The complaint device was returned to the manufacturer for evaluation.No patient complications were reported as a result of the revision procedure.Age: (b)(6) years.Height: 104 centimeters (cm).Weight: (b)(6) kilograms (kg).Gender: male.

• Brand Name: SHUNTASSISTANT 20
• Common Device Name: HYDROCEPHALUS MANAGEMENT
• Manufacturer (Section D): CHRISTOPH MIETHKE GMBH & CO KG; ulanenweg 2; potsdam, 14469 ; GM 14469
• Manufacturer (Section G): CHRISTOPH MIETHKE GMBH & CO KG; ulanenweg 2; potsdam, 14469 ; GM 14469
• Manufacturer Contact: joerg knebel ; ulanenweg 2; potsdam, 14469 ; GM 14469
• MDR Report Key: 14566870
• Report Number: 3004721439-2022-00140
• Device Sequence Number: 4943691
• Product Code: JXG
• UDI-Device Identifier: 04041906113209
• UDI-Public: 4041906113209
• Combination Product (Y/N): N
• Initial Reporter Country: GM
• PMA/510(K) Number: K110206
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2016
• Device Explanted Year: 2022
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 06/01/2022

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: 09/14/2021
• Device Model Number: FV251T
• Device Catalogue Number: FV251T
• Device Lot Number: C81169
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 05/02/2022
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/02/2022
• Initial Report FDA Received Date: 06/01/2022
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/15/2016
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Age: 5 YR
• Patient Sex: Male
• Patient Weight: 13 KG