MAUDE Adverse Event Report: ALCON RESEARCH, LLC - IRVINE TECHNOLOGY CENTER CENTURION VISION SYSTEM; UNIT, PHACOFRAGMENTATION

Catalog Number 8065751763

Device Problem Unintended Movement (3026)

Patient Problem Patient Problem/Medical Problem (2688)

Event Date 01/02/2019

Event Type  Injury  

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 Description

A customer reported that during a laser assisted cataract surgery, during the phacoemulsification stage, a quadrant of the nucleus moved out to the periphery.The surgeon indicated the capsulotomy was complete with no microadhesions and no areas of non treatment.A vitrectomy was required to complete the case.The surgeon suspects the event is related to a zonular issue caused by past retinal surgery.

Manufacturer Narrative

Posterior capsule (pc) tear is a potential consequence of cataract extraction.Predisposition to pc tear or zonular dehiscence can be influenced by many factors including, but not limited to, congenital posterior lenticonus, posterior sub capsular (psc) cataract, poor visibility secondary to patients comorbidity [ie.Dense arcus, pterygium, band keratopathy, corneal scars, interstitial keratitis], poor microscope illumination [red reflex], ergonomic obstacles, limited intraocular working space, abnormally long or short axial lengths, pseudoexfoliation, zonular laxity, poor dilation, intraoperative floppy iris syndrome (ifis), dense cataracts, asteroid hyalosis, or inadvertent patient movement.The conditions that increase the risk of pc tear during phacoemulsification include ergonomic obstacles, limited intraocular working space, poor visualization, increased nuclear size and density, weakened zonule, a radial tear in the capsulorhexis, and an inability to rotate the nucleus or epinucleus.These conditions may arise either because of the ocular anatomy, or because of surgical technique.There is no evidence contained within the reported information at this time that indicates that the design or performance of the system had any effect on the integrity of the posterior capsule.The system operator¿s manual includes a warning: ensure that appropriate system parameters and system settings are selected prior to starting the procedure.Adjusting aspiration rates or vacuum limits above the preset values, or lowering the intraocular pressure (iop) or iv pole below the preset values, may cause chamber shallowing or collapse which may result in patient injury.When filling handpiece test chamber, if stream of fluid is weak or absent, good fluidics response will be jeopardized.Good clinical practice dictates the testing for adequate irrigation and aspiration flow prior to entering the eye.The system serial number (s/n) was not provided and could not be determined based on the information provided.Therefore, manufacturing information could not be obtained.Due to insufficient information, the root cause could not be identified conclusively.The root cause of the reported event cannot be determined conclusively.The manufacturer internal reference number is: (b)(4).

• Brand Name: CENTURION VISION SYSTEM
• Type of Device: UNIT, PHACOFRAGMENTATION
• Manufacturer (Section D): ALCON RESEARCH, LLC - IRVINE TECHNOLOGY CENTER; 15800 alton parkway; irvine CA 92618
• MDR Report Key: 8278353
• MDR Text Key: 134130740
• Report Number: 2028159-2019-00142
• Device Sequence Number: 1
• Product Code: HQC
• Combination Product (y/n): N
• PMA/PMN Number: K121555
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,health
• Type of Report: Initial,Followup
• Report Date: 04/30/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Catalogue Number: 8065751763
• Was Device Available for Evaluation?: No
• Initial Date Manufacturer Received: 01/02/2019
• Initial Date FDA Received: 01/25/2019
• Supplement Dates Manufacturer Received: 04/24/2019
• Supplement Dates FDA Received: 04/30/2019
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Treatment: LENSX; LENSX
• Patient Outcome(s): Required Intervention
• Patient Age: 66 YR