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

Catalog Number	8065751570
Medical Device Problem Code	Suction Problem (2170)
Health Effect - Clinical Code	Insufficient Information (4580)
Date of Event	11/25/2025
Type of Reportable Event	Malfunction
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).
Event or Problem Description
A physician reported that the vitrectomy probe did not aspirate during vitrectomy surgery.The procedure was completed after replacement of product with new one.There was no information about patient impact.
Additional Manufacturer Narrative
Additional information provided in d.9., e.1.(initial reporter zip code), h.3., h.6.And h.11.No technical inquiries were received from the customer.One opened probe with tip protector in a pouch was received for the report.The sample was visually inspected and found to be nonconforming with bent needle at the stiffener.The sample was then functionally tested for actuation and aspiration.The sample was found to be conforming for aspiration and nonconforming for actuation.The probe was disassembled and the components inspected.Nominal wear observed on inner cutter when compared to the degree of wear based on continuous actuation of the probe visual standard photos.Inner cutter was observed to be bent.Gouge marks at area bent on the inner cutter.A review of the device history record traceable to the lot number obtained from the device¿s radio frequency identification (rfid) tag, 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 and materials received, the complaint evaluation does not confirm the probe had an aspiration failure; the evaluation indicates the probe had an actuation failure.The aspiration function of the probe was conforming; however, the observed actuation failure could have caused the cutter to stay in the port of the needle long enough to obstruct aspiration flow at the time the reported event was observed.The most likely cause for the actuation failure is from the bent needle and bent inner cutter.A bent needle can impede the movement of the cutter shaft and aspiration flow through the probe.This interference is present as observed from visual condition of the inner cutter.The exact root cause of the bent needle and bent inner cutter cannot be determined from this evaluation.The most likely root cause is handling at any point after the probe was shipped from the manufacturing site including use during surgery.No further investigative or manufacturing actions are warranted at this time due to the reported aspiration failure was not confirmed, and an exact root cause for the bent needle and the bent inner cutter could not be determined from this evaluation.All probes are 100% visually inspected and tested for actuation, aspiration, and cut during manufacturing.Any non-conformances found are removed from the lot and scrapped.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: 23877998
• Report Number: 1644019-2025-05678
• Device Sequence Number: 11945120
• Product Code: MLZ
• UDI-Device Identifier: 00380657515707
• UDI-Public: (01)00380657515707(17)260331(11)240417(10)16PUA7
• 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: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 04/25/2026

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: 03/31/2026
• Device Catalogue Number: 8065751570
• Device Lot Number: 16PUA7
• 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: 11/27/2025
• Supplement Date Received by Manufacturer: 04/02/2026
• Initial Report FDA Received Date: 12/23/2025
• Supplement Report FDA Received Date: 04/25/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 04/17/2024
• 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