MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG PROGAV 2.0 WITH SHUNTASSISTANT 2.0 25; HYDROCEPHALUS MANAGEMENT

Model Number	FX643T
Medical Device Problem Codes	Obstruction of Flow (2423); Physical Resistance/Sticking (4012)
Health Effect - Clinical Code	Hydrocephalus (3272)
Date of Event	05/21/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that a progav 2.0 shuntsystem (#fx643x) was implanted on (b)(6) 2025.According to the complainant, the shunt system caused an overdrainage and had adjustment difficulties.The patient underwent a revision procedure on (b)(6) 2026.
Additional Manufacturer Narrative
Visual inspection: during the investigation, no significant deformations or damage of the valve were determined.Permeability test: a permeability test has shown that all components are permeable.Computer controlled test: to investigate the claim of over-drainage, the opening pressure is measured using a miethke computer controlled testing apparatus which simulates a cerebrospinal fluid flow.The valves are tested in both the horizontal as well as the vertical positions.The results show that both valves do not operate within the permissible tolerance in their respective relevant positions.An accelerated outflow of both valves was determined.Adjustment test: the progav 2.0 was tested and is not adjustable.Braking force and brake function test: the brake functionality test has shown that the brake function operates as expected.However, the braking force cannot be measured due to the non-adjustability of the valve.Internal inspection: after dismantling of the valves, deposits were found.Results: based on the investigation results, accelerated outflow and non-adjustability of the progav 2.0 have been identified.Furthermore, accelerated outflow was measured on the shuntassistant 2.0.The deposits visible in the valves have led to functional impairments.Deposits caused by substances naturally present in the body, such as protein, blood, or tissue particles, are among the known and unavoidable risks and side effects of hydrocephalus therapy.Even small amounts of organic deposits can compromise the integrity of the valve.A defect at the time of release can be excluded.The shunt system 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.

• Brand Name: PROGAV 2.0 WITH SHUNTASSISTANT 2.0 25
• 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: 25505592
• Report Number: 3004721439-2026-00169
• Device Sequence Number: 10492084
• Product Code: JXG
• UDI-Device Identifier: 04041906502010
• UDI-Public: (01)04041906502010(11)250519(17)300515(10)20082839
• Combination Product (Y/N): N
• Initial Reporter Country: SZ
• PMA/510(K) Number: K190174
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 06/15/2026

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 Model Number: FX643T
• Device Catalogue Number: FX643T
• Device Lot Number: 20082839
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 05/26/2026
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 05/26/2026
• Initial Report FDA Received Date: 06/15/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• 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: 12 MO
• Patient Sex: Female