MAUDE Adverse Event Report: ENDOLOGIX AFX; BIFURCATED STENT GRAFT

Model Number BA25-90/I16-30

Device Problems Failure To Adhere Or Bond (1031); Collapse (1099); Leak/Splash (1354); Stretched (1601); Material Integrity Problem (2978)

Patient Problems Aneurysm (1708); Pain (1994); Rupture (2208)

Event Date 07/15/2017

Event Type  Injury  

Manufacturer Narrative

The device involved in this event will not be returned for evaluation, it was reported that the device was sent out for pathology.If additional information pertinent to the incident is obtained, a follow up report will be submitted.

Event Description

The patient was implanted with a bifurcated and suprarenal stent graft on (b)(6) 2015.On (b)(6) 2017 it was reported that the patient had a aaa rupture.The physician elected to explant the device and noted that the graft had no material on the struts.The graft is not available for return because the physician had sent it to pathology.The patient is reported to have tolerated the procedure; no additional patient sequelae has been reported.

Manufacturer Narrative

No additional investigations of this reported complaint are planned, endologix will continue to monitor this complaint and similar complaints in the event further investigation is needed.

Manufacturer Narrative

At the completion of the clinical evaluation, based on the information received there were substantial evidence to support the following reported events; rupture, explant, and pain.Clinical evaluations was unable to find substantial evidence to support the following reported events; endoleak type iiib.Additionally there was evidence to reasonably support the following observations; aneurysm sac growth, endoleak type iiia with partial separation, dilation of superior stent margin of main body stent by 20%, collapse of main body with ~20% narrowing, congestive heart failure, and pulmonary emboli.Cumulative knowledge informed by past assessments of similar complaints was applied to a review of the available medical information.The most likely cause of the loss of seal could not be determined, however the subsequent remodeling of the aorta and 68 degree infrarenal angulation likely contributed to the partial separation of the main body and proximal extension.Additionally, the aortic remodeling likely contributed to a partial collapse of the main body stent.Unable to determine procedure-related or user-related issues, and cautionary or off-label product use conditions.Procedure-related harms include: congestive heart failure and pulmonary emboli.Associated clinical harms for this device malfunction included: aneurysm sac growth; pain; rupture; endoleak iiia, surgical conversion.The most likely cause of compromise stent graft integrity could not be determined.However, the movement of suprarenal cuff relative to the main body with the aneurysm remodeling likely contributed to this event and dilation of the proximal main body stent.Unable to determine procedure-related or user-related issues, and cautionary or off-label product use conditions.Associated clinical harms for this device malfunction included: endoleak iiib.Final patient disposition was reported as no further negative patient sequelae.A root cause investigation was carried out for all afx complaints having an identified failure mode of a type iiia endoleak.The root causes have been identified as; patient anatomy including large aneurysms, aneurysm sac angulation, significant aortic neck angulation and lack of thrombus; patient conditions including disease progression or anatomical changes post implant; off label product use including patient anatomy, overlap length, oversizing between components, and placement of the devices within the anatomy of the patient.Endologix implemented the following corrective actions to reduce the type iiia endoleak events; sizing guidance and instructions were updated in the ifu and released on 06/17/2015, field training was completed by 08/03/2015.Since the corrective actions were implemented the type iiia events have been reduced significantly and are well within the acceptable range per our risk assessment.Root cause investigation was carried out for all afx complaints having an identified failure mode of a type 3a endoleak.The root causes have been identified as; patient anatomy including large aneurysms, aneurysm sac angulation, significant aortic neck angulation and lack of thrombus; patient conditions including disease progression or anatomical changes post implant; off label product use including patient anatomy, overlap length, oversizing between components, and placement of the devices within the anatomy of the patient.Endologix implemented the following corrective actions to reduce the type 3a endoleak events; sizing guidance and instructions were updated in the ifu and released on 06/17/2015, field training was completed by 08/03/2015.Since the corrective actions were implemented the type 3a events have been reduced by 95%.The review of manufacturing lot confirmed all devices met specifications prior to release.Device was not returned, therefore, sample evaluation was not completed.Endologix continues to investigate this event and similar events to ensure the highest quality and patient safety.

Manufacturer Narrative

No additional investigations of this reported complaint are planned, endologix will continue to monitor this complaint and similar complaints in the event further investigation is needed.

• Brand Name: AFX
• Type of Device: BIFURCATED STENT GRAFT
• Manufacturer (Section D): ENDOLOGIX; 2 musick; irvine CA 92618
• Manufacturer Contact: victor arellano ; 2 musick; irvine, CA 92618 ; 9495984671
• MDR Report Key: 6802701
• MDR Text Key: 82977477
• Report Number: 2031527-2017-00419
• Device Sequence Number: 1
• Product Code: MIH
• UDI-Device Identifier: 00818009010230
• UDI-Public: (01)00818009010230(17)171013
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: P040002
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative
• Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup,Followup
• Report Date: 11/17/2017

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?: Yes
• Device Operator: Physician
• Device Expiration Date: 10/13/2017
• Device Model Number: BA25-90/I16-30
• Device Lot Number: 1283106-018
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Initial Date Manufacturer Received: 07/20/2017
• Initial Date FDA Received: 08/17/2017
• Supplement Dates Manufacturer Received: 07/20/2017; 07/20/2017; 07/20/2017
• Supplement Dates FDA Received: 11/21/2017; 01/16/2018; 01/17/2018
• Was Device Evaluated by Manufacturer?: No
• Date Device Manufactured: 10/28/2014
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: N
• Patient Sequence Number: 1
• Patient Outcome(s): Congenital Anomaly; Required Intervention
• Patient Age: 76 YR