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 Code	Improper Flow or Infusion (2954)
Health Effect - Clinical Code	Insufficient Information (4580)
Date of Event	09/01/2026
Type of Reportable Event	Malfunction
Event or Problem Description
A physician reported that, during a vitrectomy procedure, the ophthalmic backflush tubing was blocked and unable to provide normal suction.The procedure was completed on the same day after replacing the backflush.Patient impact has not been provided.Additional information has been requested but is not available at the time of this report.
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).

• 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 ; +1(800)757-9780
• MDR Report Key: 50851514
• Report Number: 3003398873-2026-00200
• Device Sequence Number: 15841265
• Product Code: HQE
• UDI-Device Identifier: 07612717071193
• 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: Physician
• Type of Report: Initial
• Report Date (Section B): 09/22/2026

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 Catalogue Number: 337.84
• Device Lot Number: 16M331
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Initial Date Received by Manufacturer: 09/02/2026
• Initial Report FDA Received Date: 09/22/2026
• Date Device Manufactured: 03/12/2024
• 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