An interventional study of Pulsed Field Ablation System in Atrial Fibrillation, sponsored by Biosense Webster, Inc.. Active, not recruiting at 6 sites in 5 countries. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-11-03.
Sponsored by Biosense Webster, Inc. (part of Johnson & Johnson) · Not applicable, Interventional, and Treatment
Among 52 studies in Atrial Fibrillation by Biosense Webster, Inc. — 6 open to participants now, 10 under way, none of them phase 3. Atrial Fibrillation · Biosense Webster, Inc..
Among the 52 studies in Atrial Fibrillation by Biosense Webster, Inc., this one is the 37th largest by enrollment of the 47 interventional ones, is one of 5 that started in 2026, is one of 30 with no phase, and was the 48th registered.
4,009 studies on the registry are indexed under Atrial Fibrillation; 961 are open to participants now.
This study's enrollment of 42 is below the median of 150 across 2,476 interventional studies indexed under Atrial Fibrillation.
Browse Atrial Fibrillation studies →6 of the 52 studies in Atrial Fibrillation by Biosense Webster, Inc. are open now, in 5 countries. Each count lists the studies.
Of the 612 Atrial Fibrillation studies recruiting now, 407 (67%) set no upper age limit and 44 (7%) stop at 75 or younger; 21 take children under 18; 43 take healthy volunteers.
This study: 18 Years to 75 Years · all sexes · no healthy volunteers.
The full table on the hub →52 studies; the count open now beside each. This study's row is marked.
First in 2003; this study’s year is marked. 5 started in 2026.
Median enrollment 149 across the 47 interventional studies, 234 across the 5 observational. Of the 41 that completed or were terminated, 32 (78%) have results posted.
Biosense Webster, Inc. is the lead sponsor of 64 studies on the registry; 8 are open to participants now.
Of its 26 completed or terminated interventional studies of FDA-regulated products, 24 (92%) have results posted.
5 of the studies in Atrial Fibrillation by Biosense Webster, Inc. that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07429214Biosense Webster, Inc.A Study of VARIPULSE Catheter and TRUPULSE Generator With VARIPULSE Pro Software in Participants With PAF or PsAF | 2026-12-30 |
| NCT07428564Biosense Webster, Inc.A Study of VARIPULSE Catheter and TRUPULSE Generator With VARIPULSE PRO Software in Participants With PsAF | 2026-12-30 |
| NCT03963349Biosense Webster, Inc.THERMOCOOL SMARTTOUCH®SF Catheters With Ablation Index Study | 2026-12-31 |
| NCT07116525Biosense Webster, Inc.A Study Assessing Arrhythmia Mapping With a Multi-Electrode Mapping Catheter | 2027-02-07 |
| NCT06455098Biosense Webster, Inc.A Study of Assessment on Safety and Effectiveness of BWI Pulsed Field Ablation With OMNYPULSE Catheter for the Treatment of Paroxysmal Atrial Fibrillation (PAF) | 2027-07-31 |
Among the 52 studies in Atrial Fibrillation by Biosense Webster, Inc., from their registry updates:
The main purpose of this study is to investigate the workflow of the clinical use of the pulsed field (PF) ablation system (VARIPULSE catheter and TRUPULSE generator) when used for cardiac ablation with the new VARIPULSE Pro software in participants with persistent atrial fibrillation (PsAF; irregular, rapid heart rhythm that lasts over 7 days and doesn't stop on its own)
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
TIA (transient ischaemic attack)
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
COPD
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants undergoing cardiac ablation for management of treatment of symptomatic Persistent Atrial Fibrillation (PsAF) will undergo pulsed field ablation (PFA) with the VARIPULSE Catheter and the TRUPULSE Generator with the new VARIPULSE Pro software.
Device: Pulsed Field Ablation System
Pulsed field ablation by VARIPULSE catheter with TRUPULSE generator along with VARIPULSE Pro software will be used.
Acute Procedural Success
Acute procedural success, which is defined as electrical isolation of clinically relevant targeted PVs (confirmed by entrance block) after adenosine/isoproterenol challenge at the end of the index ablation procedure will be reported.
Time frame: Intraoperative
Pulmonary Vein Isolation (PVI) Durability
PVI durability is defined as sustained isolation of PVs that are targeted in the index ablation procedure, which is evidenced by the confirmation of isolation via the electro-anatomical mapping 90 days (+/- 14 days) post index ablation procedure.
Time frame: Up to 3 months post index ablation procedure
Pulsed Field (PF) Applications Time
PF applications time will be reported.
Time frame: Intraoperative
Number of PF applications
Number of PF applications will be reported.
Time frame: Intraoperative
Tissue Proximity Indication (TPI)
TPI will be reported.
Time frame: Intraoperative
Occurrence of Serious Adverse Device Effects (SADE) (Within Seven (7) days) of Index Ablation Procedure) Where the Investigational Devices were Used per Clinical Investigation Plan
A SADE is an adverse device effect that has resulted in any of the consequences characteristic of an serious adverse event (SAE). A SAE is any event that led to any of the following: Death, Serious deterioration in the health of a participant that resulted in any of the following: life-threatening illness or injury, permanent impairment of a body structure or a body function, in-patient hospitalization or prolongation of patient hospitalization, medical or surgical intervention to prevent life-threatening illness or injury or permanent impairment to body structure or a body function, chronic disease and fetal distress, fetal death or a congenital physical or mental impairment or birth defect.
Time frame: Up to 7 days post index ablation procedure
Occurrence of Unanticipated Serious Adverse Device Effects (USADEs)
An USADE is any SAE on health, safety, any life-threatening problem, or death caused by, or associated with a device, if that effect, problem, or death was not previously identified in nature, severity, outcome, or degree of incidence in the current investigational plan or risk analysis report, or any other unanticipated serious problem associated with a device that relates to rights, safety, or welfare of participants.
Time frame: Up to 3 months post index ablation procedure
Occurrence of SAEs
An SAE is any event that led to any of the following: Death, Serious deterioration in the health of a participant that resulted in any of the following: life-threatening illness or injury, permanent impairment of a body structure or a body function, in-patient hospitalization or prolongation of patient hospitalization, medical or surgical intervention to prevent ife-threatening illness or injury or permanent impairment to body structure or a body function, chronic disease and fetal distress, fetal death or a congenital physical or mental impairment or birth defect.
Time frame: At 7 days, 8 to 30 days (peri-procedural) and up to 3 months post index ablation procedure
Occurrence of Non-Serious Adverse Events (Non-SAEs)
An Adverse Event (AE) means any untoward medical occurrence, unintended disease or injury or any untoward clinical signs, including an abnormal laboratory finding, in participants, users or other persons, in the context of a clinical investigation, whether or not related to the investigational device.
Time frame: Up to 3 months post index ablation procedure
Occurrence of New Post-Ablation Asymptomatic and Symptomatic Cerebral Emboli Observed Post-Ablation as Determined by Magnetic Resonance Imaging (MRI) Evaluations
Occurrence of new post-ablation asymptomatic and symptomatic cerebral emboli will be evaluated using cerebral MRI performed post-ablation.
Time frame: Post-ablation (within 72 hours after ablation) and up to 3 months post index ablation procedure
Anatomical Location of New Post-Ablation Asymptomatic and Symptomatic Cerebral Emboli Observed Post-Ablation as Determined by MRI Evaluations
Anatomical location of new post-ablation asymptomatic and symptomatic cerebral emboli will be evaluated using cerebral MRI performed post-ablation.
Time frame: Post-ablation (within 72 hours after ablation) and up to 3 months post index ablation procedure
Size of New Post-Ablation Asymptomatic and Symptomatic Cerebral Emboli Observed Post-Ablation as Determined by Magnetic Resonance Imaging (MRI) Evaluations
Size of new post-ablation asymptomatic and symptomatic cerebral emboli will be evaluated using cerebral MRI performed post-ablation.
Time frame: Post-ablation (within 72 hours after ablation) and up to 3 months post index ablation procedure
Occurrence of New or Worsening Neurological Deficits
Occurrence of new or worsening neurological deficits will be assessed.
Time frame: Post-ablation (within 72 hours after ablation) and up to 3 months post index ablation procedure
Mini Mental State Examination (MMSE) Total Score
The MMSE is a, structured examination of cognitive function. It has a total score of 30 points (0-30), and any score equal to or lower than 26 points indicates cognitive impairment.
Time frame: Baseline (within 72 hours prior to ablation), and post-ablation (72 hours after ablation procedure)
National Institutes of Health Stroke Scale (NIHSS) Score
The NIHSS is a clinician-reported measure of neurological deficit with scores ranging from 0 to 42. No stroke symptoms (0), mild stroke (1-4), moderate stroke (5-15), moderate to severe stroke (16-20), and sever (21-42).
Time frame: Baseline (within 72 hours pre ablation procedure), and post-ablation (72 hours after ablation procedure)
Modified Rankin Scale (mRS) Scale Score
The mRS score is a validated score measuring neurologic outcomes after cardio-pulmonary resuscitation (CPR) where: * mRS 0: No symptoms. * mRS 1: No significant disability. Able to perform all usual activities, despite some symptoms. * mRS 2: Slight disability. Independent but unable to perform usual activities (work, sports, leisure). * mRS 3. Moderate disability. Requires assistance, but able to walk alone. * mRS 4: Moderately severe disability. Walking assistance and/or daily living activities not possible. * mRS 5. Major disability. Bedridden, incontinent and requires constant nursing care and attention. * mRS 6: Death.
Time frame: Baseline (within 72 hours pre ablation procedure), and post-ablation (72 hours after ablation procedure)
Occurrence of Severe Pulmonary Vein (PV) Stenosis
Occurrence of severe PV stenosis as determined by Computed Tomography (CT)/ Magnetic Resonance Angiogram (MRA) evaluations will be reported.
Time frame: Up to 3 months post index ablation procedure
Plan to share: Yes — The data sharing policy of Johnson \& Johnson MedTech is available at innovativemedicine.jnj.com/our-innovation/clinical-trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu
Data sharing details ↗ · www.jnj.com
No publications or documents are linked to this record.
Started May 2026 (actual). Primary completion is estimated for Dec 2026, 7 months after the start.
Of 255 industry-sponsored interventional studies with no phase under Atrial Fibrillation, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 36. This study's planned 7 months is below that.
Counting every sponsor, half of 1,051 studies reached it within 33 months; a quarter within 18 and three quarters within 54.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Nov 2026. You cannot join it, but the record below documents what was studied.
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