To Compare and Evaluate the Efficacy and Safety Between TS-RF System and BRK Transseptal Needles Used for Transseptal Puncture for Left Atrial Access.

A Prospective, Multi-center, Randomized, Single-blind, Non-inferiority Confirmatory Study Designed to Compare and Assess Efficacy and Safety Between "TS-RF System Consisting of a Electrosurgical System, General-purpose (TS-RF Generator) and a Electrosurgical System Electrode, Hand-controlled, General-purpose, Single-use (TS-RF Needle)" and "Needle, Puncture, Single-use (BRK Transseptal Needle)", Both of Which Are Used for the Transseptal Puncture Performed to Enable Left Atrial Access for the Treatment of Symptomatic Arrhythmia and Mitral Stenosis

The purpose of this study is to compare and assess efficacy and safety between the study device "TS-RF system consisting of a electrosurgical system, general-purpose (TS-RF Generator) and a electrosurgical system electrode, hand-controlled, general-purpose, single-use (TS-RF Needle)" and the control device "needle, puncture, single-use (BRK Transseptal needle)", both of which are used for the transseptal puncture performed to enable left atrial access for the treatment of symptomatic arrhythmia and mitral stenosis and then to demonstrate that the study device is non-inferior to the control device.

Study Overview

• Status: Recruiting
• Conditions: Heart Diseases; Atrial Fibrillation; Arrhythmias, Cardiac
• Intervention / Treatment: Device: TS-RF Transseptal Needle; Device: BRK Transseptal Needle

Detailed Description

The efficacy and safety of radiofrequency (RF) needles in transseptal puncture have been well established through several comparative clinical studies. In foreign countries, RF needles have already been used for transseptal puncture for more than 20 years since the FDA approval of the first RF Needle. However, in Korea, despite the fact that it has been approximately 30 years since the initiation of radiofrequency catheter ablation (RFCA) for the treatment of arrhythmia, only the conventional mechanical needles have still been available after authorization for transseptal puncture that is the key for the treatment of cardiac disorders such as mitral stenosis as well as a part of RFCA for the treatment of arrhythmia.

Therefore, this study aims to compare and assess efficacy and safety between the study device "TS-RF system consisting of a electrosurgical system, general-purpose (TS-RF Generator) and a electrosurgical system electrode, hand-controlled, general-purpose, single-use (TS-RF Needle)" and the control device "needle, puncture, single-use (BRK Transseptal needle)", both of which are used for the transseptal puncture performed to enable left atrial access for the treatment of symptomatic arrhythmia and mitral stenosis, and then to demonstrate that the study device is non-inferior to the control device.

• Study Type: Interventional
• Enrollment (Estimated): 70
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Eunji shin; Phone Number: 603 +82-31-816-3546; Email: eunji.shin@starmed4u.com

Study Locations

• South Korea
  • Bucheon-si, South Korea
    • Recruiting
    • Bucheon Sejong Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. ≥ 18 years of age

2. Diagnosed with one of the following cardiac disorders as shown in the medical record:

   [Symptomatic arrhythmia]

   • "Atrial fibrillation" diagnostics (including paroxysmal, persistent, long-standing persistent and permanent atrial fibrillation)

     • Diagnostic criteria: atrial fibrillation lasting ≥ 30 seconds as a result of standard 12-lead electrocardiogram (ECG) or single-lead ECG
     • ECG feature: irregular R-R interval, lack of visible P waves, irregular atrial activation
     • Symptoms: fatigue, palpitation, dyspnea, chest discomfort, sleep disorders, mental stress

     • Type:

       • Paroxysmal atrial fibrillation (stopping within 48 hours without any treatment; restoring the sinus rhythm with cardioversion within 7 days)
       • Persistent atrial fibrillation (persisting for ≥ 7 days; including sinus rhythm restoration with direct-current cardioversion (DCC) or pharmacological cardioversion after the persistence)
       • Long-standing persistent atrial fibrillation (persisting for ≥ 1 year; including cases requiring cardioversion)
       • Permanent atrial fibrillation (The patient and healthcare provider accept atrial fibrillation and do not consider cardioversion; if cardioversion is considered, the atrial fibrillation is reclassified as long-standing persistent atrial fibrillation)

   • "Paroxysmal Supraventricular Tachycardia" diagnostics

     = Clinical feature: The heart beats regularly 150 to 200 times per minute; the start and end of paroxysmal supraventricular tachycardia are clearly recognizable; these occur unexpectedly and stop abruptly.

   • "Ectopic Atrial Rhythm Tachycardia" diagnostics

     = Clinical feature: Heart rhythm of less than 250 beats per minute; morphologic difference from P waves in the sinus rhythm; P waves that precede QRS waves are identifiable.

   • "Ventricular Tachycardia" diagnostics = Clinical feature: Wide QRS waves appear in succession with a rapid ventricular rate of ≥ 100 beats per minute; the patients is diagnosed with persistent ventricular tachycardia if tachycardia persists for ≥ 30 seconds but with non-persistent ventricular tachycardia if not applicable.
   • "Arrhythmia requiring left atrial access, including left atrial appendage occlusion, in the left atrium" diagnostics = Clinical feature: moderate or higher risk of stroke, risk of bleeding, or contraindication to anticoagulation therapy

   [Symptomatic mitral stenosis]

   -"Mitral Stenosis requiring percutaneous mitral valvuloplasty through left atrial access" diagnostics

   • Diagnostic criteria: confirmation of mitral stenosis with echocardiography and assessment of severity
   • Symptoms: dyspnea; shortness of breath even at rest or inability to sleep in a supine position if dyspnea worsens; may accompanied by coughing, sputum, and chest pain.
3. Understood this clinical study and voluntarily signed the informed consent form (ICF)1

Exclusion Criteria:

[For symptomatic arrhythmia and mitral stenosis] If any of the following applies, you cannot participate in this clinical trial.1,26,37,45,46

1. Patients with significant congenital heart defects, such as atrial septal defect or pulmonary vein (PV) abnormalities (excluding patent foramen ovale (PFO)).
2. Thrombus in the left atrium
3. Atrial fibrillation to reversible causes (e.g. hyperthyroidism, thoracic surgery)
4. Known or suspected left atrial myxoma.
5. Unstable angina.
6. Pre-existing hemidiaphragmatic paralysis
7. Contraindication to anticoagulation or radiocontrast materials
8. liver disease (including active hepatitis) and kidney disease.
9. Cerebral ischemic event (strokes or TIAs) during the six-month interval preceding the consent date
10. Malignant tumors or hematological diseases or life expectancy of less than one (1) year.
11. Currently participating or anticipated to participate in any other clinical trial of a drug, device or biologic that has the potential to interfere with the results of this study
12. Unwilling or unable to comply fully with study procedures and follow-up
13. A pregnant woman, a woman planning on becoming pregnant, or a lactating woman.
14. Ineligible for study participation in the judgment of the investigator.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Radiofrequency energy needle; Radiofrequency energy needle(TS-RF Needle) for transseptal access	Device: TS-RF Transseptal Needle; Apply radiofrequency energy to the electrode tip via the TS-RF Generator and puncture the atrial septum
Active Comparator: Mechanical needle; Mechanical needle(BRK Transseptal Needle) for transseptal access	Device: BRK Transseptal Needle; Cross and puncture the atrial septum with the BRK Transseptal Needle

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
First-pass TSP Success Rate (percent)	Probability that the needle crosses from the superior vena cava to the fossa ovalis and its left atrial access is identified at a time by fluoroscopy, transesophageal echocardiography (TEE), or intracardiac echocardiography (ICE).	Day of procedure

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
TSP Time (Second)	Time from the point where the needle crosses from the superior vena cava to the fossa ovalis to the point where its left atrial access is identified by fluoroscopy, transesophageal echocardiography (TEE), or intracardiac echocardiography (ICE).	Day of procedure
Fluoroscopy Time (Second) for TSP	Time from the point where invasive vascular monitoring is initiated with fluoroscopy following the femoral venous puncture and then the needle inserted into the femoral vein is visible on the fluoroscope's fluorescent screen to the point where the needle tip's left atrial access after TSP is identified.	Day of procedure
Needle cross-over between the study and control groups	Perform TSP by switching the needle from the BRK needle in the control group to the TS-RF needle in the study group, or from the TS-RF needle in the study group to the BRK needle in the control group. Collect the data based on the recorded videos and procedure record sheets. (Number of subjects who switched needles and percentage in each group)	Day of procedure
Intra-TSP procedural device-associated complications	Collect and total the numbers of intra-TSP procedural device-associated complications for each group based on the procedure record sheets and then calculate and compare the group-specific incidence rates (percent).	Day of procedure
Changes in patient's quality of life	Check the improvement in patient's quality of life by measuring the degree of discomfort due to symptomatic arrhythmia or mitral stenosis before the procedure (baseline) and at 2 weeks after the procedure. Calculate and compare group-specific mean changes in EQ-5D-5L and EQ-VAS before the procedure (baseline) and at the follow-up visit 2 weeks after the procedure. It consists of 5 multiple-choice questions asking about current health status and 1 question (visual analogue scale, VAS) that displays subjective health level (0 to 100 points) in the form of a thermometer.	before the procedure (baseline) and at 2 weeks after the procedure.
Complications	Check the complications collected during the hospitalization period within 7 days immediately after the procedure and at the follow-up visit 2 weeks after the procedure, including the following two durations:.; From the end of TSP to the end of hospitalization within 7 days thereafter; From the discharge to the follow-up visit at 2 weeks after TSP	for 2 weeks after the procedure

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Intra-TSP procedural Adverse Events	Types and numbers of adverse events, including all complications that occurred during TSP, such as perforations, damages and bleedings in tissues other than the atrial septum due to needles, sheaths, dilators, and other catheters, replacement with the same needle product, and deterioration of patient's vital signs.	During procedure
Overall Adverse Events	Types and numbers of all adverse events including all complications occurring from the time of subject enrollment to the end of follow-up visit at 2 weeks after TSP, including the following three durations: From the subject enrollment to the end of TSP; From the end of TSP to the end of hospitalization within 7 days thereafter; From the discharge to the follow-up visit at 2 weeks after TSP	for 2 weeks after the procedure

Collaborators and Investigators

• Sponsor: Starmed
• Collaborators: Helptrial
• Investigators: Principal Investigator: Jong-Il Choi, MD, Ph.D, Korea University Anam Hospital; Principal Investigator: Jae-Sun Uhm, MD, Ph.D, Severance Hospital; Study Chair: Sang-Weon Park, MD, Ph.D, Sejong General Hospital

Study record dates

Study Major Dates

• Study Start (Actual): August 21, 2024
• Primary Completion (Actual): August 21, 2025
• Study Completion (Estimated): October 31, 2026

Study Registration Dates

• First Submitted: April 1, 2024
• First Submitted That Met QC Criteria: April 7, 2024
• First Posted (Actual): April 10, 2024

Study Record Updates

• Last Update Posted (Actual): April 24, 2026
• Last Update Submitted That Met QC Criteria: April 21, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Keywords: Radiofrequency; Transseptal catheterization; Transseptal puncture; Left atrial access
• Additional Relevant MeSH Terms: Cardiovascular Diseases; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Heart Diseases; Atrial Fibrillation; Arrhythmias, Cardiac
• Other Study ID Numbers: TS-RF system

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: There is not a plan to make IPD available.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No