MAUDE Adverse Event Report: BIOSENSE WEBSTER INC QDOT MICRO¿ CATHETER; CATHETER, PERCUTANEOUS, CARDIAC ABLATION, FOR TREATMENT OF ATRIAL FIBRILLATION

Catalog Number	D139504
Medical Device Problem Code	Incorrect, Inadequate or Imprecise Result or Readings (1535)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	06/16/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that a patient underwent an atrial fibrillation ablation procedure with a qdot micro¿ catheter and post procedure the bwi product analysis lab identified a separation between the pebax and third electrode.During the procedure, the qdot catheter had high force readings observed on the carto 3 system during the procedure.The force would rise up to 50-60 grams when the medical team would come on ablation.They were able to zero the qdot catheter.The catheter cable was replaced without resolution.The catheter was replaced, the issue resolved.The procedure was continued.No patient consequences were reported.
Additional Manufacturer Narrative
The product investigation was completed.Device evaluation details: the device was returned to johnson & johnson medtech (j&j) for evaluation.A visual inspection and screening test of the returned device was performed following johnson & johnson medtech procedures.Visual analysis revealed a separation between pebax and the third electrode, and a reddish material inside it.The device was connected to the carto 3 system, and no errors were observed.The force feature of the device was evaluated and the force values and the vector were observed within specifications.No force issues were observed.A manufacturing record evaluation was performed for the finished device number lot 31448364l and no internal action related to the complaint was found during the review.The reddish material inside the pebax could be also related to the force issue reported by the customer; therefore, the customer complaint was confirmed.The potential cause of the pebax damage could be related to the manufacturing process.The instructions for use (ifu) states: when cleaning the tip electrode, be careful not to twist the tip electrode with respect to the catheter shaft; twisting may damage the tip electrode bond and loosen the tip electrode, or may damage the contact force sensor.In addition, in order to prevent damage to the catheter tip, use the insertion tube supplied with the catheter to advance or retract the catheter through the hemostasis valve of the sheath.After insertion, slide the insertion tube back toward the handle.As part of johnson & johnson medtech quality process, all devices are manufactured, inspected, and released to approved specifications.This product issue will be addressed through johnson & johnson medtech quality system.Internal actions are being implemented to address manufacturing opportunities related to the force sensor sleeve insolation to prevent fluids to get inside into the device.If additional information is received regarding this event, a supplemental 3500a report will be submitted to the fda.Manufacturer's reference number: (b)(4).

• Brand Name: QDOT MICRO¿ CATHETER
• Common Device Name: CATHETER, PERCUTANEOUS, CARDIAC ABLATION, FOR TREATMENT OF ATRIAL FIBRILLATION
• 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: 22773427
• Report Number: 2029046-2025-02640
• Device Sequence Number: 18477021
• Product Code: OAE
• UDI-Device Identifier: 10846835016741
• UDI-Public: (01)10846835016741(11)240910(17)270909(10)31448364L
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: P210027
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 08/11/2025

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: D139504
• Device Lot Number: 31448364L
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/09/2025
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/17/2025
• Initial Report FDA Received Date: 08/11/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/10/2024
• 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
• Concomitant Medical Products and Therapy/Usage Dates: CARTO 3 SYSTEM; NGEN GENERATOR; NGEN PUMP
• Patient Sex: Unknown