MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG M.BLUE PLUS VALVE; HYDROCEPHALUS MANAGEMENT

Model Number FX804T

Device Problems Mechanical Problem (1384); Infusion or Flow Problem (2964)

Patient Problem Hydrocephalus (3272)

Event Date 02/05/2024

Event Type  Injury  

Manufacturer Narrative

Visual inspection: during the investigation, bloody residue on the outer housing of the valves, but no significant deformations or damage were determined.Permeability test: a permeability test has shown that the m.Blue has a blockage while the progav 2.0 is permeable.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 position.As the m.Blue is not permeable, a computer-controlled test is not possible.The investigations on the progav 2.0, however, show that the progav 2.0 works within the permissible tolerance in the horizontal position.Adjustment test: during the adjustment test it was determined that both valves are not adjustable in all pressure ranges.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 in both valves.To make the deposits in the shunt system more visible, they were colored using a staining solution.Results: in advance, we would like to point out that the product sent in was not inserted in liquid at the time of delivery.Dried deposits can influence the function of the products, which can affect the results.Despite this, we have examined the valve.Based on our investigation results, we can determine a blockage on the m.Blue and non-adjustability on both valves.The deposits visible in the valves may have led to the malfunctions at the valves.Deposits caused by natural substances 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 proteins can impair 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.No further regulatory actions are required from our point of view.

Event Description

It was reported that a m.Blue üplus (#fx804t) was implanted during a procedure performed on (b)(6) 2022.According to the complainant, the shunt system showed an under-drainage and adjustment difficulties.The patient underwent a revision procedure performed on (b)(6) 2024.The complainant device has returned to the manufacturer for evaluation.No patient complications were reported as a result of the revision procedure.Age: 4 years.Weight: 20 kgs.Height: 108 cm.Gender: female.

• Brand Name: M.BLUE PLUS VALVE
• Type of Device: 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: 18763398
• MDR Text Key: 336054840
• Report Number: 3004721439-2024-00040
• Device Sequence Number: 1
• Product Code: JXG
• Combination Product (y/n): N
• Reporter Country Code: GM
• PMA/PMN Number: K192266
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Foreign,User Facility,Company Representative
• Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date: 02/22/2024

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
• Device Model Number: FX804T
• Device Catalogue Number: FX804T
• Device Lot Number: 20055607
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/12/2024
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 02/12/2024
• Initial Date FDA Received: 02/22/2024
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 10/21/2021
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention
• Patient Age: 4 YR
• Patient Sex: Female
• Patient Weight: 20 KG