MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION WALLFLEX ESOPHAGEAL; PROSTHESIS, ESOPHAGEAL

Model Number M00516700

Device Problems Positioning Failure (1158); Use of Device Problem (1670); Activation, Positioning or Separation Problem (2906); Detachment of Device or Device Component (2907)

Patient Problem No Consequences Or Impact To Patient (2199)

Event Date 11/17/2020

Event Type  Injury  

Manufacturer Narrative

(b)(4).The complainant indicated that the device was disposed and will not be returned for evaluation; therefore, a failure analysis of the complaint device could not be completed.If any further relevant information is identified, a supplemental medwatch will be filed.

Event Description

It was reported to boston scientific corporation on november 17, 2020 that a wallflex esophageal fully covered stent was to be implanted to treat an esophageal perforation during an esophagogastroduodenoscopy (egd) with stent placement procedure performed on (b)(6) 2020.Reportedly, the patient's anatomy was not tortuous and was not dilated prior to stent placement.According to the complainant, during the procedure, as the stent was initially being deployed, the white cone-shaped tip detached from the delivery system.The tip was still over the wire.An egd scope was advanced and a rescue forceps was used to retrieve the tip and the wire out of the patient.The procedure was not completed as another stent was unavailable.There were no patient complications reported as a result of this event.Note: according to the complainant, the stent was used for esophageal perforation.However, per wallflex esophageal fully covered stent instructions for use (ifu), the stent is indicated for maintaining esophageal luminal patency in esophageal strictures caused by intrinsic and/or extrinsic malignant tumors, and occlusion of concurrent esophageal fistula.The device is not indicated to treat an esophageal perforation.A photo was provided by the complainant post procedure, and it showed that the stent was partially deployed on the delivery system and the tip was detached from the rest of the delivery system.

Event Description

It was reported to boston scientific corporation on (b)(6) 2020 that a wallflex esophageal fully covered stent was to be implanted to treat an esophageal perforation during an esophagogastroduodenoscopy (egd) with stent placement procedure performed on (b)(6) 2020.Reportedly, the patient's anatomy was not tortuous and was not dilated prior to stent placement.According to the complainant, during the procedure, as the stent was initially being deployed, the white cone-shaped tip detached from the delivery system.The tip was still over the wire.An egd scope was advanced and a rescue forceps was used to retrieve the tip and the wire out of the patient.The procedure was not completed as another stent was unavailable.There were no patient complications reported as a result of this event.Note: according to the complainant, the stent was used for esophageal perforation.However, per wallflex esophageal fully covered stent instructions for use (ifu), the stent is indicated for maintaining esophageal luminal patency in esophageal strictures caused by intrinsic and/or extrinsic malignant tumors, and occlusion of concurrent esophageal fistula.The device is not indicated to treat an esophageal perforation.A photo was provided by the complainant post procedure, and it showed that the stent was partially deployed on the delivery system and the tip was detached from the rest of the delivery system.

Manufacturer Narrative

Block h6: problem code 2907 captures the reportable event of tip detached.Block h10: the wallflex esophageal stent was not returned; however, per media inspection of the photo provided by the complainant, the stent was partially deployed, the inner sheath and the tip of the delivery system were detached.A labeling review was performed, and from the information available, this device was used in a manner inconsistent with the instructions for use (ifu).According to the complainant, the stent was used for esophageal perforation.However, per wallflex esophageal fully covered stent instructions for use, the stent is indicated for maintaining esophageal luminal patency in esophageal strictures caused by intrinsic and/ or extrinsic malignant tumors, and occlusion of concurrent esophageal fistula.Taking all available information into consideration, the investigation concluded that the reported events were likely due to factors encountered during the procedure.It may be the techiques used by the user, the interaction of the device with the scope, and/ or the patient anatomy ( esophageal perforation), limited the performance of the device and contributed to the reported events of stent partially deployed, tip detached and the observed failure of inner sheath detached per media inspection.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 ESOPHAGEAL
• Type of Device: PROSTHESIS, ESOPHAGEAL
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 300 boston scientific way; marlborough MA 01752
• MDR Report Key: 10983095
• MDR Text Key: 220653025
• Report Number: 3005099803-2020-05898
• Device Sequence Number: 1
• Product Code: ESW
• UDI-Device Identifier: 08714729778035
• UDI-Public: 08714729778035
• Combination Product (y/n): N
• PMA/PMN Number: K091510
• 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: 12/23/2020

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: Health Professional
• Device Expiration Date: 04/21/2022
• Device Model Number: M00516700
• Device Catalogue Number: 1670
• Device Lot Number: 0026221911
• Was Device Available for Evaluation?: No
• Initial Date Manufacturer Received: 11/17/2020
• Initial Date FDA Received: 12/10/2020
• Supplement Dates Manufacturer Received: 12/04/2020
• Supplement Dates FDA Received: 12/23/2020
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention