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Acolyte CTO-PCI Study: Imaging and Catheter System to Treat Patients With Coronary Chronic Total Occlusion, Who Have Persistent Symptoms Following Medical Therapy and Are Undergoing Percutaneous Coronary Interventional Procedures

Chronic Total Occlusion (CTO) Crossing, Re-entry and Imaging With the Acolyte™ Catheter System in Subjects Undergoing Percutaneous Coronary Interventional (PCI) Procedures

Status
Enrolling by invitation
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06795763
Enrollment
115
Registered
2025-01-28
Start date
2025-08-06
Completion date
2027-09-01
Last updated
2026-05-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Coronary Chronic Total Occlusions, Ischemic Heart Disease, Ischemic Heart Disease Chronic, Ischemic Heart Disease (IHD)

Keywords

CTO-PCI, CTO

Brief summary

This is a study to evaluate the safety and effectiveness of the Acolyte Catheter System used in CTO-PCI procedures. The system will be used for the placement and positioning of guidewires and catheters in the coronary vasculature for the treatment of patients with coronary chronic total occlusions with persistent symptoms following medical therapy.

Detailed description

This is a study to evaluate the safety and effectiveness of the Acolyte™ Catheter System used in CTO-PCI procedures as follows: * Evaluate angiographic confirmation of guidewire placement beyond the CTO, in the true vessel lumen, in which the investigational device was utilized to facilitate crossing and/or re-entry. * Evaluate in-hospital major adverse cardiac events (MACE). Acolyte™ Optical Coherence Tomography (OCT) imaging will be utilized in all cases to inform guidewire advancement in the direction of true lumen. Additionally, Acolyte™ OCT imaging will be used to guide re-entry from the subintimal space to the true lumen.

Interventions

DEVICECTO-PCI Procedure with Acolyte Catheter System

Acolyte Catheter System is used to facilitate placement and positioning of guidewires and catheters within the coronary vasculature for the treatment of patients with coronary chronic total occlusions with persistent symptoms following medical therapy. The device provides real-time visualization of a coronary chronic total occlusion allowing for guidewire placement in the true lumen of the target vessel and subsequent revascularization.

Sponsors

Elumn8 Medical
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subject is \> 18 years of age at the time of consent * Subject is on medical therapy and continues to experience clinical symptoms considered suggestive of ischemic heart disease (e.g., chest pain or discomfort, heart failure) or has evidence of myocardial ischemia (e.g., abnormal functional study) attributed to the CTO target vessel and is scheduled for clinically indicated percutaneous revascularization * Female subjects of reproductive potential must have a negative pregnancy test per standard of care for PCI * Subject is willing and able to provided written informed consent * Subject is willing to and able to comply with the study protocol requirements including all follow up visits post-procedure

Exclusion criteria

* Subject has history of allergy to iodinated contrast that cannot be managed medically * Subject has evidence of acute myocardial infarction (MI) within 72 hours prior to the intended treatment * Subject has had previous coronary interventional procedure of any kind within 30 days prior to the investigational procedure * Atherectomy procedure is planned for the target lesion * History of stroke or transient ischemic attack within 6 months prior to procedure * Active peptic ulcer or upper gastrointestinal bleeding within 6 months prior to procedure * History of bleeding diathesis or coagulopathy or refusal of blood transfusions * Other pathology such as cancer, known mental illness, etc., or other condition which might, in the opinion of the Investigator, put the patient at risk or confound the results of the study * Subject participating in an investigational drug or device study that has not completed the primary endpoint or that clinically interferes with this study's endpoints; or requires coronary angiography, intravascular ultrasound, or other coronary artery imaging procedures

Design outcomes

Primary

MeasureTime frameDescription
Procedure Success - Visualization of GuidewireFrom the beginning of the study procedure to the end of the study procedureProcedure success is defined as angiographic visualization of a guidewire facilitated by the Acolyte Catheter System, in a distal position of the CTO in the true lumen of the vessel.
Procedure Success - Absence of Major Adverse Cardiac EventsFrom the beginning of the study procedure until discharge or 24 hours after the procedure (whichever comes first)Absence of in-hospital major adverse cardiac events (MACE). MACE is defined as any serious adverse experience that includes cardiac death, target lesion revascularization, or post-procedural myocardial infarction (with CK-MB \>= 10x URL or \>= 5x URL with new pathological Q waves in \>= 2 contiguous leads or new persistent left bundle branch block (LBBB)).

Secondary

MeasureTime frameDescription
Successful RecanalizationFrom the beginning of the study procedure to the end of the study procedureFrequency of successful recanalization defined as angiographic confirmation of crossing the chronic total occlusion and restoring blood flow to the affected area
In-Hospital: Frequency of Major Adverse Cardiac Events (MACE)From the beginning of the study procedure until discharge or 24 hours after the procedure (whichever comes first)Any serious adverse experience that includes cardiac death, target lesion revascularization, or post-procedural myocardial infarction.
30-Day: Frequency of Major Adverse Cardiac Events (MACE)30 Day Follow-upAny serious adverse experience that includes cardiac death, target lesion revascularization, or post-procedural myocardial infarction.
Safety - Blood Vessel PerforationFrom the beginning of the study procedure to the end of the study procedureFrequency of clinically significant perforation (perforation that results in hemodynamic instability and/or requiring intervention including pericardiocentesis, embolization, prolonged balloon occlusion, stent graft, or comparable therapy).
Procedure: Serious Adverse Events Related to Study Device or ProcedureFrom the beginning of the study procedure until discharge or 24 hours after the procedure (whichever comes first)Frequency of serious adverse events (SAEs) related to the study device or procedure
30-Day: Serious Adverse Events Related to Study Device or Procedure30 Day Follow-upFrequency of serious adverse events (SAEs) related to the study device or procedure
3-Month: Serious Adverse Events Related to Study Device or Procedure3-Month Follow-upFrequency of serious adverse events (SAEs) related to the study device or procedure
Procedure: Non-serious Adverse Events Related to Study Device or ProcedureFrom the beginning of the study procedure until discharge or 24 hours after the procedure (whichever comes first)Frequency of non-serious adverse events related to the study device or procedure
30-Day: Non-serious Adverse Events Related to Study Device or Procedure30 Day Follow-upFrequency of non-serious adverse events related to the study device or procedure
Procedure: Time for Guidewire to Cross Chronic Total Occlusion (CTO)From the beginning of the study procedure to the end of the study procedureTime from initial CTO guidewire entered into guide to guidewire crossing chronic total occlusion
Procedure: Fluoroscopy TimeFrom the beginning of the study procedure to the end of the study procedureTotal fluoroscopy time during procedure
Procedure: Technical SuccessFrom the beginning of the study procedure to the end of the study procedureCrossing chronic total occlusion and/or re-entry success
Change from Baseline in Seattle Angina Questionnaire-7 at 30 DaysBaseline and 30 DaysChange from Baseline in Mean Seattle Angina Questionnaire-7 at 30 Days
Change from Baseline in Seattle Angina Questionnaire-7 at 3 MonthsBaseline and 3 MonthsChange from Baseline in Mean Seattle Angina Questionnaire-7 at 3 Months

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 20, 2026