MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION INTERLOCK?-35; DEVICE, VASCULAR, FOR PROMOTING EMBOLIZATION

Model Number	M001363610
Medical Device Problem Codes	Failure to Advance (2524); Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/11/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
E1 - initial reporter phone: (b)(6).Device technical analysis: upon receipt at our post market quality assurance laboratory, it was observed that the main coil and the delivery wire were returned.It was observed that the main coil was bent and stretched at the primary coil section, moreover the arm coil was detached.The delivery wire was stretched and detached at the interlocking arm.Dimensional inspection of the main coil revealed the components were within specification.No other issues were identified during the product analysis.Device history record (dhr) review: it was confirmed this device met manufacturing specifications prior to distribution and there were no manufacturing deviations that could have contributed to the reported event.Labeling review: review of the instructions for use (ifu) confirmed that the content was sufficient and did not contribute to the reported event; therefore, no updates are required to the document at this time.Risk review: a risk review was completed and confirmed that the event of main coil unable to advance in catheter, coil main bent/kinked, stretched, detached/separated, wire delivery damaged and detached/separated were defined in the risk documentation and is documented accordingly in the prr.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.Investigation conclusion: based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of unintended use error caused or contributed to event instructions.
Event or Problem Description
Reportable based on device analysis completed on (b)(6) 2026.It was reported that coil could not advance the microcatheter.The target lesion was located in the gastric coronary vein.A 10mm x 40cm interlock-35 was selected for use in a transhepatic intrajugular portosystemic shunt (tips) combined with gastric fundus variceal embolism.During the procedure, it was noted that the interlock could not be pushed out in the catheter after many attempts.The catheter and coil were withdrawn, and the procedure was completed with another of the same device.There were no patient complications as a result of this event.However, device analysis revealed arm coil detached.

• Brand Name: INTERLOCK?-35
• Common Device Name: DEVICE, VASCULAR, FOR PROMOTING EMBOLIZATION
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 300 boston scientific way; marlborough MA 01752
• Manufacturer (Section G): BOSTON SCIENTIFIC CORPORATION; model farm road; cork T12 Y K88; EI T12 YK88
• Manufacturer Contact: ricardo amaro castro ; 4100 hamline ave n; arden hills, MN 55112 ; 9529306396
• MDR Report Key: 24792862
• Report Number: 2124215-2026-18586
• Device Sequence Number: 13193463
• Product Code: KRD
• UDI-Device Identifier: 08714729793168
• UDI-Public: (01)08714729793168(17)271126(10)35366285
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K133208
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,Company Representative,Distributor
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 04/06/2026

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
• Operator of Device: Health Professional
• Device Model Number: M001363610
• Device Catalogue Number: M001363610
• Device Lot Number: 0035366285
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/16/2026
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 03/13/2026
• Initial Report FDA Received Date: 04/06/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/26/2024
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Patient Age: 32 YR
• Patient Sex: Female
• Patient Weight: 63 KG