MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG PROGAV 2.0 SYS W/SA25 A.CONTROL RESERV.; HYDROCEPHALUS MANAGEMENT

Model Number	FX435T
Medical Device Problem Codes	Mechanical Problem (1384); Infusion or Flow Problem (2964)
Health Effect - Clinical Code	Hydrocephalus (3272)
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Manufacturer evaluation: investigation in process.If relevant additional information / investigation results become available, a supplemental medwatch report will be submitted.
Event or Problem Description
It was reported that a progav 2.0 (part # fx435t) was implanted during a procedure performed on an unknown date.According to the complainant, the valve was believed to be clogged.The patient underwent a revision procedure.The complaint device was returned to the manufacturer for evaluation.No patient complications were reported as a result of the revision procedure.Although requested, no further information has been made available.
Additional Manufacturer Narrative
Manufacturing and quality control data the progav® 2.0 shunt system was manufactured by a qualified employee on april 2016.Deviations during assembly did not occur.The product was finally tested as article fx435t and released for packaging and sterilization and was sterilized by miethke.The progav® 2.0 has a normal pressure range of 0 to 20 cmh2o.The parameters after completion of the valve assembly were tested at a flow rate of 5 ml/h or 50 ml/h at set pressures of 0, 5, 10 and 20 cmh2o, and were found to meet specifications.The shuntassistant® has a fixed pressure of 25.The parameters after completion of the valve assembly were tested at a flow rate of 5 ml/h or 50 ml/h at a fixed pressure of 25 cmh2o, and were found to meet range the tolerances.All tested parameters were assessed according to specifications.Visual inspection in the first step of our investigation, we performed a visual inspection of the product.We have checked for possible damage, deformation of the housing, deposits or other abnormalities.The following observations were made during the visual inspection: - tissue residues in reservoir permeability test the permeability test was performed at a hydrostatic pressure difference of the pressure setting of the progav® 2.0 shunt system upon receipt plus 30 cmh2o in the horizontal direction of flow.The test showed that the progav® 2.0 shunt system, and the catheter was permeable.It could be observed that the fluid was bloody.The reservoir could be operated within the specification.Adjustability test in this step, it was investigated whether the adjustable progav 2.0 can be successfully set to each specified pressure setting.It was checked whether the valve is fully adjustable within the full range of specified pressure settings ( in increments of 5 cmh2o).The progav® 2.0 was found to be adjustable to all pressure settings.The shuntassistant® is a fixed pressure valve, therefore the adjustability test is inapplicable.Braking force and brake function test the braking force and brake function test investigates whether the brake function of the adjustable valves is present and how much force must be exerted on the housing to release the rotor to adjust the valves using the integrated magnet of a specific measurement apparatus of braking force.The braking force of the progav® 2.0 was within the specified tolerance and the brake function operated as expected.Internal inspection of product in order to verify whether the investigated shunt system was compromised by the known risks of hydrocephalus therapy, e.G.By a build-up of natural substances (protein, blood, or tissue particles) in the cerebrospinal fluid, we have dismantled the shunt system.After dismantling of the valves, some deposits were found in progav® 2.0.No deposits were detected in the shuntassistant®.Results based on our investigation, we are not able to substantiate the claim of "blockage".However, we assume that the significant deposits found within the valve may have temporarily caused the functional impairment.Deposits caused by natural substances in the cerebrospinal fluid, such as protein, blood or tissue particles, are among the known and unavoidable risks and side effects of hydrocephalus therapy.Small amounts of non-visible deposits/proteins might compromise the integrity of the valve.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.
Event or Problem Description
Investigation is done.

• Brand Name: PROGAV 2.0 SYS W/SA25 A.CONTROL RESERV.
• Common Device Name: HYDROCEPHALUS MANAGEMENT
• Manufacturer (Section D): CHRISTOPH MIETHKE GMBH & CO KG; ulanenweg 2; potsdam, 14469 ; GM 14469
• MDR Report Key: 11461934
• Report Number: 3004721439-2021-00039
• Device Sequence Number: 11809437
• Product Code: JXG
• UDI-Device Identifier: 04041906137335
• UDI-Public: 4041906137335
• Combination Product (Y/N): N
• Initial Reporter Country: PL
• PMA/510(K) Number: K161853
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 05/24/2021

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: 12/31/2020
• Device Model Number: FX435T
• Device Catalogue Number: FX435T
• Device Lot Number: 20030012
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/22/2021
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/10/2021
• Supplement Date Received by Manufacturer: 05/10/2021
• Initial Report FDA Received Date: 03/11/2021
• Supplement Report FDA Received Date: 05/25/2021
• 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: Required Intervention