MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG PROGAV 2.0 SYSTEM WITH CONTROL RESERVOIR; HYDROCEPHALUS MANAGEMENT

Model Number	FX431T
Medical Device Problem Code	Obstruction of Flow (2423)
Health Effect - Clinical Code	Hydrocephalus (3272)
Date of Event	10/20/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Manufacturing site evaluation: investigation on-going.Should relevant additional information or the investigation results become available, a supplemental medwatch report will be submitted.
Event or Problem Description
It was reported that a progav 2.0 shuntsystem (#fx432t) was implanted during a procedure performed on (b)(6) 2025.According to the complainant, the shunt system caused an underdrainage.The patient underwent a revision procedure on (b)(6) 2025.No patient complications were reported as a result of the revision procedure.The complained device was returned to the manufacturer for evaluation.
Additional Manufacturer Narrative
Visual inspection: during the investigation, scratches on the outer housing of the progav 2.0 and organic deposits in the reservoir were determined.Permeability test: a permeability test has shown that all components are permeable.During the permeability test bloody liquid were flushed out of the progav 2.0.Computer controlled test: to investigate the claim of under-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 the progav 2.0 operates within the permissible tolerance in the horizontal position.Adjustment test: the progav 2.0 was tested and is adjustable to all specified pressures.Braking force and brake function test: the brake functionality test has shown that the brake function operates as expected and the braking force is within the given tolerances.Internal inspection: after dismantling of the valve, no deposits were found in progav 2.0.Results: based on our investigation results, we cannot determine any functional deviations or other abnormalities in the progav 2.0 and the catheters.The products operated within all specification.Furthermore, we can determine visible deposits in the control reservoir.The deposits had no effect upon the specifications at the time of the examination.The reservoir operated within all specifications.Organic material in the csf can temporarily influence the function and are known side effects in hydrocephalus therapy.How the abovementioned functional impairment occurred is not clear to us at the time of examination.The examination of the return has been completed with the drafting of this report.We can exclude a defect at the time of release.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 SYSTEM WITH CONTROL RESERVOIR
• 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: 23511789
• Report Number: 3004721439-2025-00332
• Device Sequence Number: 9955505
• Product Code: JXG
• UDI-Device Identifier: 04041906137298
• UDI-Public: (01)04041906137298(11)250217(17)300210(10)20080734
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K161853
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• 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,Followup
• Report Date (Section B): 11/20/2025

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: FX431T
• Device Catalogue Number: FX431T
• Device Lot Number: 20080734
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 10/30/2025
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/21/2025
• Supplement Date Received by Manufacturer: 11/14/2025
• Initial Report FDA Received Date: 11/10/2025
• Supplement Report FDA Received Date: 11/20/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 02/17/2025
• 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: 8 YR
• Patient Sex: Female
• Patient Weight: 35 KG