MAUDE Adverse Event Report: BIOSENSE WEBSTER INC THERMOCOOL SMARTTOUCH SF; CARDIAC ABLATION PERCUTANEOUS CATHETER

Catalog Number	D134804
Medical Device Problem Code	Patient Device Interaction Problem (4001)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/16/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
This report is being submitted pursuant to the provisions of 21 cfr, part 803.This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by biosense webster, inc., or its employees that the report constitutes an admission that the product, biosense webster, inc., or its employees caused or contributed to the potential event described in this report.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.Manufacturer's reference number: (b)(4).
Event or Problem Description
It was reported that a patient underwent a cardiac ablation procedure with a thermocool smarttouch sf (stsf) and in the middle of the procedure, the physician felt what seemed like a steam pop during a cavotricuspid isthmus (cti) procedure.The ablation tag where he felt the steam pop had an average contact force of 11g (5-18g) and an ablation index of 555.Procedure was completed successfully.No pericardial effusion was found by the physician using echocardiography after the procedure.Ablation mode was power-controlled.Temperature was 26° (irrigated catheter), impedance was 118-111, force was 5-18g (11g on average).The length of the ablation cycle when the pop was observed at the same tip position was 24 seconds.There were no errors reported by the biosense webster systems.There was no patient consequence.

• Brand Name: THERMOCOOL SMARTTOUCH SF
• Common Device Name: CARDIAC ABLATION PERCUTANEOUS CATHETER
• Manufacturer (Section D): BIOSENSE WEBSTER INC; 31 technology drive, suite 200; irvine CA 92618
• Manufacturer (Section G): BIOSENSE WEBSTER INC (JUAREZ); circuito interior norte; 1820parque industrial salvacar; juarez 32599 ; MX 32599
• Manufacturer Contact: henry boden ; 31 technology dr; irvine, CA 92618 ; 9497882078
• MDR Report Key: 25167185
• Report Number: 2029046-2026-01570
• Device Sequence Number: 18802441
• Product Code: LPB
• UDI-Device Identifier: 10846835010176
• UDI-Public: (01)10846835010176(17)280715(10)31691407L
• Combination Product (Y/N): N
• Initial Reporter Country: SZ
• PMA/510(K) Number: P030031
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 06/17/2026

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 Catalogue Number: D134804
• Device Lot Number: 31691407L
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 04/16/2026
• Supplement Date Received by Manufacturer: 05/21/2026
• Initial Report FDA Received Date: 05/14/2026
• Supplement Report FDA Received Date: 06/17/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 07/16/2025
• 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 Sex: Unknown