MAUDE Adverse Event Report: ALCON RESEARCH, LLC - HOUSTON CONSTELLATION ULTRAVIT PROBE; VITRECTOMY, INSTRUMENT CUTTER

Catalog Number	8065751438
Medical Device Problem Codes	Suction Problem (2170); Failure to Cut (2587)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/17/2025
Type of Reportable Event	Malfunction
Event or Problem Description
A physician reported that the surgeon performed a right eye mesh removal surgery.After completing the patient's preliminary surgical preparation, the product was opened for surgery, and it was found that the probe could not cut and aspirate the vitreous body normally during the vitrectomy surgery.Replaced the probe with a new one for surgery.The entire surgery was postponed for ten minutes, and there were no other abnormalities.The patient returned smoothly to the ward after completing the surgery and there was no impact to the patient.
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 provided in h.6.And h.11.The opened probe returned for evaluation for the report was not within the reported pak lot number reported based on radio frequency identification (rfid) tag identification; therefore, no sample evaluation was performed.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 nonconformance review of the reported lot.A nonconformance was found.This non-conformance could have potentially contributed to the reported event.One non-conformance record was completed to trend the defect of cut failure.Based on the evaluation of the information and materials received (the reported product and lot was not received), the investigation was unable to identify the root cause or origin of the reported event.Additionally, no manufacturing-related deficiencies were found that potentially could have contributed to the complaint.As the root cause and its origin are inconclusive, the returned sample lot number was not within the reported pak lot number based on rfid tag identification; therefore, specific actions with regard to this complaint cannot be taken.All probes are 100% visually inspected and tested for actuation, aspiration, and cut during manufacturing.Receipt of additional relevant information or supporting materials will prompt a re-evaluation of the complaint investigation.Complaint data for all company products is reviewed monthly to monitor for adverse trends.During the last review, no adverse trends were observed for the reported product and event combination.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending and take further action, as appropriate.No further action warranted at this time.The manufacturer internal reference number is: (b)(4).

• Brand Name: CONSTELLATION ULTRAVIT PROBE
• Common Device Name: VITRECTOMY, INSTRUMENT CUTTER
• Manufacturer (Section D): ALCON RESEARCH, LLC - HOUSTON; 9965 buffalo speedway; houston TX 77054
• Manufacturer (Section G): ALCON RESEARCH, LLC - HOUSTON; 9965 buffalo speedway; houston TX 77054
• Manufacturer Contact: jonathan schlech ; 6201 south freeway; mail stop ab2-6; fort worth, TX 76134 ; 8007579780
• MDR Report Key: 24051882
• Report Number: 1644019-2026-00317
• Device Sequence Number: 10022962
• Product Code: MLZ
• UDI-Device Identifier: 00380657514380
• UDI-Public: (01)00380657514380(17)260731(11)240801(10)1709EU
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K093305
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Nurse
• Type of Report: Initial,Followup
• Report Date (Section B): 05/14/2026

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 Expiration Date: 07/31/2026
• Device Catalogue Number: 8065751438
• Device Lot Number: 1709EU
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 12/19/2025
• Supplement Date Received by Manufacturer: 04/23/2026
• Initial Report FDA Received Date: 01/13/2026
• Supplement Report FDA Received Date: 05/14/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 08/01/2024
• 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