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

Catalog Number	D139505
Medical Device Problem Code	Obstruction of Flow (2423)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/23/2026
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 an atrial flutter ablation procedure with a qdot micro catheter and an irrigation issue occurred.Initially, the carto 3 system was displaying high force readings when the catheter was inserted into the body.The medical team tried rezeroing several times without resolution.They then reseated the connections and rebooted the ngen¿ system and the issue resolved.They were able to complete 3 ablations but they noticed the ngen¿ pump was going 4ml even though all the settings were correct.The catheter was not irrigation properly.The catheter was replaced and the issue was resolved.The procedure was continued.No patient consequences were reported.
Additional Manufacturer Narrative
On 18-mar-2026, the bwi product analysis lab received the device for evaluation.The product investigation was subsequently completed.It was reported that a patient underwent an atrial flutter ablation procedure with a qdot micro catheter and an irrigation issue occurred.Initially, the carto 3 system was displaying high force readings when the catheter was inserted into the body.The medical team tried rezeroing several times without resolution.They then reseated the connections and rebooted the ngen¿ system and the issue resolved.They were able to complete 3 ablations but they noticed the ngen¿ pump was going 4ml even though all the settings were correct.The catheter was not irrigation properly.The catheter was replaced and the issue was resolved.The procedure was continued.No patient consequences were reported.Device evaluation details: the device was returned to johnson & johnson medtech (j&j medtech) for evaluation.Following j&j medtech procedures, a visual inspection and irrigation test of the returned device were performed.Visual inspection revealed no damage or anomalies on the device.An irrigation test was performed, and the device was irrigating correctly, no obstructed holes were observed.No irrigation issues were observed.A manufacturing record evaluation was performed for the finished device 31579178l number, and no internal actions related to the reported complaint condition were identified.The irrigation issue reported by the customer could not be replicated during the product investigation; other issues or circumstances may have occurred during the use of the device that may have affected its performance.The instructions for use (ifu) contain the following information: purge the catheter and irrigation tubing with heparinized normal saline prior to insertion of the catheter inside the patient body.As part of johnson & johnson medtech's quality process, all devices are manufactured, inspected, and released to approved specifications.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
• Common Device Name: CATHETER, PERCUTANEOUS, CARDIAC ABLATION, FOR TREATMENT OF ATRIAL FLUTTER
• 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: 24609772
• Report Number: 2029046-2026-00863
• Device Sequence Number: 9841814
• Product Code: OAD
• UDI-Device Identifier: 10846835016758
• UDI-Public: (01)10846835016758(11)250301(17)280229(10)31579178L
• 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,Followup
• Report Date (Section B): 04/08/2026

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: D139505
• Device Lot Number: 31579178L
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/23/2026
• Supplement Date Received by Manufacturer: 03/18/2026
• Initial Report FDA Received Date: 03/16/2026
• Supplement Report FDA Received Date: 04/08/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/01/2025
• 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
• Concomitant Medical Products and Therapy/Usage Dates: CARTO 3 SYSTEM; UNK_NGEN PUMP; UNK_NGEN RF GENERATOR
• Patient Sex: Unknown