MAUDE Adverse Event Report: CHRISTOPH MIETHKE GMBH & CO KG PROSA VALVE; HYDROCEPHALUS MANAGEMENT

Model Number FV701T

Device Problem Mechanical Problem (1384)

Patient Problem Hydrocephalus (3272)

Event Date 12/15/2023

Event Type  Injury  

Manufacturer Narrative

Investigation: visual inspection.During the investigation, a deformation of the outer housing of the prosa could be determined.The measurement of the plane parallelism could confirm that with a value of -0.088 mm - outside tolerance (0 0.02 mm).Permeability test.A permeability test has shown that the valve is permeable.Computer controlled test.To investigate the flow rate, the opening pressure is measured using a miethke computer controlled testing apparatus which simulates a cerebrospinal fluid flow.The valve is tested in both the horizontal as well as the vertical positions.The results show that the prosa operates within the accepted tolerance in either position.Adjustment test.The prosa valve 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 is fully operational and the braking force is within the given tolerances.Internal inspection.After dismantling of the valve, deposits were found in the prosa.Results.Based on our investigation results, we can determine deposits and a deformation.The deposits and the deformation had no affect to the technical properties at the time of the investigation.The cause of the aforementioned functional impairment is not known to us at the time of the examination.Proteins in the cerebrospinal fluid can influence the function temporarily and are known side effects in hydrocephalus therapy.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 Description

It was reported that a prosa (#fv701t) was implanted during a procedure performed on (b)(6) 2016.According to the complainant, the valve was believed to be operated in adjustment difficulties.The patient underwent a revision procedure.The complainant device was returned to the manufacturer for evaluation.No patient complications were reported as a result of the revision procedure.Age: 48 years.Height: 186 cm.Weight: 128 kg.Gender: unknown.

• Brand Name: PROSA 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: 18498159
• MDR Text Key: 332725666
• Report Number: 3004721439-2024-00003
• Device Sequence Number: 1
• Product Code: JXG
• UDI-Device Identifier: 04041906133023
• UDI-Public: 4041906133023
• Combination Product (y/n): N
• Reporter Country Code: GM
• PMA/PMN Number: K161853
• 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: 01/11/2024

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 Operator: Health Professional
• Device Expiration Date: 06/29/2020
• Device Model Number: FV701T
• Device Catalogue Number: FV701T
• Device Lot Number: 20017083
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 01/02/2024
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: Not provided
• Initial Date FDA Received: 01/11/2024
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 07/01/2015
• 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: 48 YR
• Patient Weight: 128 KG