MAUDE Adverse Event Report: ALCON RESEARCH, LTD. - IRVINE TECHNOLOGY CENTER CONSTELLATION VISION SYSTEM; UNIT, PHACOFRAGMENTATION

Model Number TABLETOP

Device Problem Unstable (1667)

Patient Problem No Known Impact Or Consequence To Patient (2692)

Event Date 03/21/2018

Event Type  malfunction  

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.(b)(4).

Event Description

A customer reported that there was chamber instability during the phacoemulsification phase and irrigation/aspiration.The procedure was completed without patient harm.

Manufacturer Narrative

Additional information has been provided.The company representative examined the system and was unable to duplicate any issue associated with the reported issue.The system was then tested and met all product specifications.Intraocular surgery has always been recognized to induce substantial intra-ocular pressure (iop) fluctuations, this is true for both anterior (i.E.Cataract surgery) and posterior segment (i.E.Vitrectomy) surgeries.Acute ocular hypotony is common during many intraocular surgeries.Intra-operatively, maintenance of eye pressure is a balance between infusion (irrigation) and extrusion (aspiration) with both parameters actively controlled by the surgeon and with the advent of iop control features, supported by vitrectomy/phacoemulsification machines.Hypotony (less than 5mmhg) is in fact fairly common in eye surgery that most eye surgeons anticipate this to occur during surgery.Surgeons have been trained to recognize and mitigate this by adjustment of the previously mentioned parameters be it manually or through the machine to adapt to what is being performed during surgery.As stated in the operators manual: ¿the closed loop system that adjusts iop cannot replace the standard of care in judging iop intraoperatively.The surgeon must continue the common practice of informally judging the following: finger palpation on the globe, tactile feedback of the surgical instruments, retinal vessel perfusion/pulsations, and presence of corneal edema.If the surgeon believes the iop is not responding to the system settings and is dangerously high, the surgeon can do one or more of the following as they deem appropriate in this situation (with care to avoid sudden hypotony): close the infusion stopcock, pinch the infusion line, remove the infusion line.¿ the operator¿s manual includes the warnings: good clinical practice dictates the testing for adequate irrigation, aspiration flow, and operation as applicable for each handpiece prior to entering the eye.Visually confirm that adequate infusion flow is occurring prior to attachment of the infusion cannula to the eye.The system was manufactured on may 31, 2016.Based on quality assurance assessment, the product met specifications at the time of release.The system was found to meet specifications; therefore, the root cause of the reported event cannot be determined conclusively.The manufacturer internal reference number is: (b)(4).

• Brand Name: CONSTELLATION VISION SYSTEM
• Type of Device: UNIT, PHACOFRAGMENTATION
• Manufacturer (Section D): ALCON RESEARCH, LTD. - IRVINE TECHNOLOGY CENTER; 15800 alton parkway; irvine CA 92618
• Manufacturer (Section G): ALCON RESEARCH, LTD. - IRVINE TECHNOLOGY CENTER; 15800 alton parkway; irvine CA 92618
• Manufacturer Contact: bryan blake ; 6201 south freeway; mail stop ab2-6; fort worth, TX 76134 ; 8176152230
• MDR Report Key: 7432778
• MDR Text Key: 105664877
• Report Number: 2028159-2018-00762
• Device Sequence Number: 1
• Product Code: HQC
• Combination Product (y/n): N
• Reporter Country Code: IT
• PMA/PMN Number: K101285
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,foreig
• Reporter Occupation: Hospital Service Technician
• Remedial Action: Other
• Type of Report: Initial,Followup
• Report Date: 08/28/2018

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
• Device Operator: Health Professional
• Device Model Number: TABLETOP
• Device Catalogue Number: 8065751150
• Other Device ID Number: 380657511501
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 03/22/2018
• Initial Date FDA Received: 04/16/2018
• Supplement Dates Manufacturer Received: 08/03/2018
• Supplement Dates FDA Received: 08/28/2018
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 05/31/2016
• Is the Device Single Use?: No
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Reuse
• Patient Sequence Number: 1
• Patient Outcome(s): Other