MAUDE Adverse Event Report: ALCON RESEARCH, LLC - ALCON PRECISION DEVICE EX-PRESS GLAUCOMA FILTRATION DEVICE; IMPLANT, EYE VALVE

Model Number	P-50
Medical Device Problem Code	Failure to Eject (4010)
Health Effect - Clinical Code	Insufficient Information (4580)
Type of Reportable Event	Malfunction
Event or Problem Description
A non-healthcare professional reported that during the shunt implantation procedure, the stent did not release properly.Additional information was requested.
Additional Manufacturer Narrative
Investigation including root cause analysis is in progress.A supplemental mdr will be filed as necessary in accordance with 21 cfr 803.56 when additional reportable information becomes available.The manufacturer internal reference number is: (b)(4).
Additional Manufacturer Narrative
Additional information was added in h.3., h.6.And h.11.A sample was not received at the manufacturing site for evaluation for the report of did not release; therefore, the condition of the product could not be verified.A review of the device history record traceable to the reported lot number, indicates that the reported product was processed and released according to the reported product¿s acceptance criteria.The investigation conducted a non-conformance review of the reported lot number.No deviations were identified and all corresponding production release specifications defined in the device master record were met.Based on the evaluation of the information received, the investigation was unable to identify the root cause or origin of the reported event.The manufacturer internal reference number is: (b)(4).

• Brand Name: EX-PRESS GLAUCOMA FILTRATION DEVICE
• Common Device Name: IMPLANT, EYE VALVE
• Manufacturer (Section D): ALCON RESEARCH, LLC - ALCON PRECISION DEVICE; 714 columbia avenue; sinking spring PA 19608
• Manufacturer (Section G): ALCON RESEARCH, LLC - ALCON PRECISION DEVICE; 714 columbia avenue; sinking spring PA 19608
• Manufacturer Contact: jonathan schlech ; 6201 south freeway; mail stop ab2-6; fort worth, TX 76134 ; 8007579780
• MDR Report Key: 24494316
• Report Number: 2523835-2026-00217
• Device Sequence Number: 5104823
• Product Code: KYF
• UDI-Device Identifier: 00380650500045
• UDI-Public: (01)00380650500045(17)270930(11)240424(10)16R9LM
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: K012852
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 05/22/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: P-50
• Device Catalogue Number: 8065050004
• Device Lot Number: 16R9LM
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 02/06/2026
• Supplement Date Received by Manufacturer: 05/06/2026
• Initial Report FDA Received Date: 03/03/2026
• Supplement Report FDA Received Date: 05/22/2026
• Date Device Manufactured: 04/24/2024
• 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
• Patient Sex: Unknown