Conscious Sedation Study

NCT06049615 | Not Yet Recruiting DMC FDA Device

• 1 other identifier: C-006
• Study Type: interventional
• Target: 300
• Locations: 0 countries
• Sites: N/A

Brief Summary

The Conscious Sedation Single Arm Sub-Study is designed to evaluate the safety and performance of the CLAAS device implantation procedure using conscious sedation.

Conditions

Atrial Fibrillation

Keywords

atrial fibrillation

Outcome Measures

Primary Outcomes (2)

• Primary Efficacy: Evaluating the Performance of CLAAS, as defined below:

  1. Successful implantation of the LAAO Device in the LAA with acceptable position (e.g. as measured at LAA orifice) through 45 days post-procedure 2. Complete closure or peri-device residual leak ≤5 mm in width on TEE, as evaluated by independent core lab at 45 days post-procedure 3. Without in-hospital major procedure-related complications during hospitalization or at 7 days, whichever is first

  7 days through 45 days post-procedure

• Primary Safety: A Composite of Major Procedure-Related Complications Assessed through 45-Days

  A composite of Major Procedure-related complications assessed through 45 days (listed below) as adjudicated by an independent Clinical Events Committee as related to either the study device or procedure. Major Procedure-Related Complications includes any of the following specific events with the specific definitions outlined for each component: * cardiac perforation, * pericardial effusion requiring drainage, * ischemic stroke, * device embolization, * major vascular complications

  45 days post procedure

Study Arms (1)

CLAAS

EXPERIMENTAL

Subjects to be implanted with the CLAAS device.

Device: CLAAS® System

Interventions

CLAAS® System DEVICE

The CLAAS® System delivers a plug to the ostia of the Left Atrial Appendage (LAA) and is designed to occlude the appendage to eliminate blood flow. It is designed to conform to the geometry of the LAA. The implant is designed to permanently seal off the LAA from the LA with an endothelial layer that forms across the LA face of the implant. The implant is available in two different sizes; Regular (27mm) and Large (35mm) to accommodate patient anatomy. Angiography and/or echocardiography may be used to determine the LAA ostium diameter to properly select the Implant size. The implant has an inner, cylindrical, Nitinol endoskeleton that provides the mechanical base structure. The Nitinol endoskeleton contains 10 face struts and 20 anchors (Regular) and 12 struts and 24 anchors (Large) facing proximally to engage the tissue to resist movement. The endoskeleton also provides the conformable structure to enable the foam cylinder to compress against the LAA tissue to facilitate sealing.

CLAAS

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Male or non-pregnant female aged ≥18 years.
• Documented non-valvular AF (paroxysmal, persistent, or permanent).
• High risk of stroke or systemic embolism, defined as CHADS2 score of ≥2 or CHA2DS2-VASc score of ≥3.
• Has an appropriate rationale to seek a non-pharmacologic alternative to long-term oral anticoagulation.
• Deemed by the site investigator to be suitable for short term oral anticoagulation therapy but deemed less favorable for long-term oral anticoagulation therapy .
• Deemed appropriate for LAA closure by the site investigator and a clinician not a part of the procedural team using a shared decision-making process in accordance with standard of care.
• Able to comply with the protocol-specified medication regimen and follow-up evaluations.
• The patient (or legally authorized representative, where allowed) has been informed of the nature of the study, agrees to its provisions, and has provided written informed consent approved by the appropriate Institutional Review Board (IRB)/Regional Ethics Board (REB).

You may not qualify if:

• Pregnant or nursing patients and those who plan pregnancy in the period up to one year following the index procedure. Female patients of childbearing potential must have a negative pregnancy test (per site standard test) within 7 days prior to index procedure.
• Anatomic conditions that would prevent performance of an LAA occlusion procedure (e.g., prior atrial septal defect \[ASD\] or high-risk patent foramen ovale \[PFO\] surgical repair or implanted closure device, or obliterated or ligated left atrial appendage).
• Atrial fibrillation that is defined by a single occurrence or that is transient or reversible (e.g., secondary thyroid disorders, acute alcohol intoxication, trauma, recent major surgical procedures).
• A medical condition (other than atrial fibrillation) that mandates long-term oral anticoagulation (e.g., history of unprovoked deep vein thrombosis or pulmonary embolism, or mechanical heart valve).
• History of bleeding diathesis or coagulopathy, or patients in whom antiplatelet and/or anticoagulant therapy is contraindicated.
• Documented active systemic infection.
• Symptomatic carotid artery disease (defined as \>50% stenosis with symptoms of ipsilateral transient or visual TIA evidenced by amaurosis fugax, ipsilateral hemispheric TIAs or ipsilateral stroke); if subject has a history of carotid stent or endarterectomy the subject is eligible if there is \<50% stenosis noted at the site of prior treatment.
• Recent (within 30 days of index procedure) or planned (within 60 days post-procedure) cardiac or major non-cardiac interventional or surgical procedure.
• Recent (within 30 days of index procedure) stroke or transient ischemic attack.
• Recent (within 30 days of index procedure) myocardial infarction.
• Vascular access precluding delivery of implant with catheter-based system.
• Severe heart failure (New York Heart Association Class IV).
• Prior cardiac transplant, history of mitral valve replacement or transcatheter mitral valve intervention, or any mechanical valve implant.
• Renal insufficiency, defined as estimated glomerular filtration rate (eGFR) \<30 mL/min/1.73 m2 (by the Modification of Diet in Renal Disease equation).
• Platelet count \<75,000 cells/mm3 or \>700,000 cells/mm3, or white blood cell count \<3,000 cells/mm3.

Sponsors & Collaborators

• Conformal Medical, Inc: lead

MeSH Terms

Conditions

Atrial Fibrillation

Condition Hierarchy (Ancestors)

Arrhythmias, Cardiac; Heart Diseases; Cardiovascular Diseases; Pathologic Processes; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: OTHER
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Model Details: The Conscious Sedation Single Arm Sub-Study is designed to evaluate the safety and performance of the CLAAS device implantation procedure using conscious sedation.

Study Record Dates

• First Submitted: July 29, 2023
• First Posted: September 22, 2023
• Study Start (Estimated): August 1, 2027
• Primary Completion (Estimated): May 1, 2028
• Study Completion (Estimated): August 1, 2028
• Last Updated: March 20, 2026

Record last verified: 2026-03