MAUDE Adverse Event Report: GLAUKOS CORPORATION ISTENT INJECT W TRABECULAR MICRO-BYPASS SYSTEM MODEL IS2; INTRAOCULAR PRESSURE LOWERING IMPLANT

Model Number	IS2-JP
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Inflammation (1932); Fibrosis (3167)
Date of Event	08/06/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that following a successful trabecular microbypass stent system procedure, the patient presented during a follow-up examination on postoperative day one (1) with what was described as a "fibrin reaction".Per report, the patient is being treated with medication and is being monitored.Additional information has been requested.
Additional Manufacturer Narrative
Additional information: the device remains implanted in the patient; therefore, product testing on the actual device could not be performed.The device history record review of the manufacturing lot was performed and there were no non-conformities found to be related to the reported event.A review of the device labeling and associated risk documents was completed.Inflammation is identified in the labeling as a known inherent risk of trabecular micro-bypass stent procedure.The ifu adequately provides instructions for stent implantation, precautions, and warnings for the proper use and handling of the device.An adverse event appears to have occurred but does not appear to have been a problem with the device or the way it was used.The reported event (fibrin reaction) is an established risk associated with use of the device, which is clearly documented.Based on the information received, the root cause of the reported event could not be conclusively identified.Mfr# reference: (b)(4).
Additional Manufacturer Narrative
Additional information: b5, g2, g3.Mfr# reference: (b)(4).
Event or Problem Description
Through follow-up, the following additional information was received.Per report, the event occurred due to stent implantation prior to cataract surgery, which resulted in excessive bleeding.Reportedly, the surgeon believes that performing irrigation and aspiration (i/a) for an extended period will stop the bleeding, and is satisfied that surgical technique will resolve the issue.The report noted that the event has resolved, and the patient's condition has stabilized with medication.

• Brand Name: ISTENT INJECT W TRABECULAR MICRO-BYPASS SYSTEM MODEL IS2
• Common Device Name: INTRAOCULAR PRESSURE LOWERING IMPLANT
• Manufacturer (Section D): GLAUKOS CORPORATION; 229 avenida fabricante; san clemente CA 92672
• Manufacturer (Section G): GLAUKOS CORPORATION; 229 avenida fabricante; san clemente CA 92672
• Manufacturer Contact: brittany massey ; 229 avenida fabricante; san clemente, CA 92672 ; 949367960
• MDR Report Key: 22865353
• Report Number: 2032546-2025-00083
• Device Sequence Number: 15386613
• Product Code: OGO
• UDI-Device Identifier: 00853704002487
• UDI-Public: 01008537040024871032354617270228
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: P170043
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 10/29/2025

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: IS2-JP
• Device Lot Number: 323546
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/06/2025
• Supplement Date Received by Manufacturer: 10/23/2025
• Initial Report FDA Received Date: 08/21/2025
• Supplement Report FDA Received Date: 10/29/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/31/2025
• 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
• Patient Sex: Unknown