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

Catalog Number	D139402
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	11/10/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The product investigation was completed.Device evaluation details: the device was returned to johnson & johnson medtech (j&j medtech) for evaluation.Visual inspection and screening test of the returned device were performed following j&j medtech procedures.Visual analysis revealed a hole in the surface of the pebax and reddish material inside.A force test was performed, and the device was recognized and visualized correctly; however, error 106 displayed on screen.Due to this condition, the handle of the device was dissected, and resistance of the sensor pads on the printed circuit board (pcb) was measured and the results were found out of specifications.A dissection was performed right after at the tip area and an open circuit was identified.In addition, further investigation of the peek housing section revealed that there was insufficient adhesive (polyurethane - pu) on the wires.A manufacturing record evaluation was performed for the finished device 31598268l number, and no internal actions related to the reported complaint condition were identified.The force sensor error reported by the customer was confirmed.The potential cause of the open circuit could not be determined.The root cause of the adhesive condition was traced to the manufacturing process.The potential cause of the pebax damage could be related to the manipulation of the device during the procedure; however, this cannot be conclusively determined.The pebax condition is unrelated to the reported event.The carto® 3 system instructions for use (ifu) contain the following information: the force sensor of the catheter is disconnected.If the problem persists, replace the catheter cable or the catheter.The instruction for use state: 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¿s quality process, all devices are manufactured, inspected, and released to approved specifications.This product issue will be addressed through j&j medtech¿s quality system.Internal actions are being implemented to address manufacturing opportunities related to the force sensor issues.If additional information is received regarding this event, a supplemental 3500a report will be submitted to the fda.Manufacturer's reference number: (b)(4).
Event or Problem Description
It was reported that a patient underwent an idiopathic ventricular tachycardia (right-sided) with a qdot micro catheter and post procedure the bwi product analysis lab identified a hole in the surface of the pebax.During the procedure, the catheter would not maintain zero.There were no error codes displayed.The catheter was replaced and the procedure continued.The case was completed.No patient consequences were reported.

• Brand Name: QDOT MICRO
• 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: 24007523
• Report Number: 2029046-2026-00061
• Device Sequence Number: 20065672
• Product Code: OAE
• UDI-Device Identifier: 10846835017076
• UDI-Public: (01)10846835017076(11)250320(17)280319(10)31598268L
• 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): 01/08/2026

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: D139402
• Device Lot Number: 31598268L
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 12/01/2025
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/12/2025
• Initial Report FDA Received Date: 01/08/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/20/2025
• 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