MAUDE Adverse Event Report: ALCON GRIESHABER AG BACKFLUSH HANDLE DSP; INSTRUMENT, VITREOUS ASPIRATION AND CUTTING, AC-POWERED, ACCESSORY

Catalog Number	337.84
Medical Device Problem Codes	Obstruction of Flow (2423); Improper Flow or Infusion (2954)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/28/2026
Type of Reportable Event	Malfunction
Event or Problem Description
A nurse reported that during vitrectomy surgery an ophthalmic device with tip blockage and no suction.The product was changed to complete surgery.There was no patient harm.
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 sections d9, h3, h6 and h11.The returned instrument was received in its inner and outer blister covered with the tyvek foil lid, showing the lot information.The instrument shows no macroscopic signs of damage and no signs of surgery residues.The instrument was visually inspected using a photomicroscope at various magnifications.The visual inspection showed no abnormalities on the soft tip of the product.The instrument was then functionally tested regarding their aspiration/irrigation properties.It could be shown that there is no leakage and no occlusion of the instrument and the aspiration as well as the irrigation works as expected for the instrument.The customer¿s complaint can therefore not be confirmed, as the product met their specifications.A review of the device history record traceable to the reported lot numbers, indicates that the reported product was processed and released according to the reported product¿s acceptance criteria.A non-conformance based review of the lot number was performed and did not reveal any potential contributing factors to the reported complaint.A root cause for the customers reported event could not be determined because the returned product met manufacturer¿s specifications.No action was taken as the returned sample met specifications for tests performed in relation to the reported event.Complaint data for all manufacturer 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.The complaint data will continue to be monitored for evidence of adverse trending and further action will be taken, as appropriate.No further action warranted at this time.The manufacturer internal reference number is: (b)(4).

• Brand Name: BACKFLUSH HANDLE DSP
• Common Device Name: INSTRUMENT, VITREOUS ASPIRATION AND CUTTING, AC-POWERED, ACCESSORY
• Manufacturer (Section D): ALCON GRIESHABER AG; winkelriedstrasse 52; schaffhausen 8203 ; SZ 8203
• Manufacturer (Section G): ALCON GRIESHABER AG; winkelriedstrasse 52; schaffhausen 8203 ; SZ 8203
• Manufacturer Contact: jonathan schlech ; 6201 south freeway; mail stop ab2-6; fort worth, TX 76134 ; 8007579780
• MDR Report Key: 24399112
• Report Number: 3003398873-2026-00039
• Device Sequence Number: 9730381
• Product Code: HQE
• UDI-Device Identifier: 07612717071193
• UDI-Public: (01)07612717071193(17)280430(11)250523(10)17EVF2
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K884043
• 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): 04/13/2026

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 Catalogue Number: 337.84
• Device Lot Number: 17EVF2
• 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: 01/29/2026
• Supplement Date Received by Manufacturer: 03/24/2026
• Initial Report FDA Received Date: 02/20/2026
• Supplement Report FDA Received Date: 04/13/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 05/23/2025
• 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