MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION WALLFLEX DUODENAL; STENT,METALLIC,EXPANDABLE,DUODENAL

Model Number M00565020

Device Problems Activation, Positioning or Separation Problem (2906); Material Deformation (2976)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 01/25/2022

Event Type  malfunction  

Manufacturer Narrative

Initial reporter address 1: (b)(6).Impact code: (b)(4).The device has not been received for analysis.Upon receipt and completion of the problem analysis of the complaint device, if there is any further relevant information from that review, a supplemental medwatch will be filed.

Event Description

It was reported to boston scientific corporation on (b)(6) 2022 that a wallflex duodenal stent was to be implanted in the duodenum to treat a malignant stricture due to gastric outlet obstruction (goo) during a duodenal stent placement procedure performed on (b)(6) 2022.The patient's anatomy was not tortuous prior to stent placement.During the procedure, the stent did not deploy.The stainless steel tube handle was found bent.The stent was removed from the patient partially deployed on the delivery system.The procedure was not completed as another stent of the same size was unavailable.There were no patient complications reported due to this event.The patient condition at the conclusion of the procedure was reported to be stable.

Event Description

It was reported to boston scientific corporation on january 25, 2022 that a wallflex duodenal stent was to be implanted in the duodenum to treat a malignant stricture due to gastric outlet obstruction (goo) during a duodenal stent placement procedure performed on (b)(6) 2022.The patient's anatomy was not tortuous prior to stent placement.During the procedure, the stent did not deploy.The stainless steel tube handle was found bent.The stent was removed from the patient partially deployed on the delivery system.The procedure was not completed as another stent of the same size was unavailable.There were no patient complications reported due to this event.The patient condition at the conclusion of the procedure was reported to be stable.

Manufacturer Narrative

Block e1: initial reporter address 1: civil hospital complex greenland restaurant tularam bafna, amingaon.Block h6: impact code f1001 is being used to capture the reportable issue of aborted/cancelled procedure.Block h10: a wallflex duodenal stent and delivery system were received for analysis.The stent was returned fully covered and undeployed.Visual examination found the outer sheath was accordioned.The stainless steel handle was kinked and the outer sheath was detached form the hub handle.Functional examination was unable to be performed due to the condition of the returned device.A dimensional inspection of the delivery system was performed and found the length of the blue sheath was out of specification.No other issues were noted to the stent and delivery system.The reported event of stainless steel handle kinked was confirmed.The reported event of stent partially deployed was not confirmed as the stent was received undeployed and was unable to be deployed during functional testing.The damages noted to the delivery system were most likely due to procedural factors encountered during the procedure.It might be that handling and manipulation of the device, the technique used by the user, the characteristics of the lesion and normal procedural difficulties encountered during the procedure, limited the performance of the device and contributed to the detached outer blue sheath at the hub handle and the out of specification external tube.This could result in the stent being unable to deploy.Therefore, a review and analysis of all available information indicated the most probable cause is adverse event related to procedure.A review of the manufacturing documentation for this device revealed that no anomalies or deviations related to the event occurred during manufacturing.

• Brand Name: WALLFLEX DUODENAL
• Type of Device: STENT,METALLIC,EXPANDABLE,DUODENAL
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 300 boston scientific way; marlborough MA 01752
• Manufacturer (Section G): BOSTON SCIENTIFIC CORPORATION; ballybrit business park; galway ; EI
• Manufacturer Contact: carole morley ; 300 boston scientific way; marlborough, MA 01752 ; 5086834015
• MDR Report Key: 13542579
• MDR Text Key: 287395053
• Report Number: 3005099803-2022-00733
• Device Sequence Number: 1
• Product Code: MUM
• UDI-Device Identifier: 08714729456490
• UDI-Public: 08714729456490
• Combination Product (y/n): N
• Reporter Country Code: IN
• PMA/PMN Number: K062750
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Other,Foreign,Health Professional,Company Representative,Distributor
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 03/30/2022

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 Expiration Date: 10/05/2023
• Device Model Number: M00565020
• Device Catalogue Number: 6502
• Device Lot Number: 0028141708
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 01/25/2022
• Initial Date FDA Received: 02/16/2022
• Supplement Dates Manufacturer Received: 03/08/2022
• Supplement Dates FDA Received: 03/30/2022
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 10/05/2021
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1