FRED Retrospective Study of Intracranial Aneurysms Treatment
ConditionIntracranial Aneurysm
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-90
SponsorMicrovention-Terumo, Inc.
About this trial
To evaluate the long-term safety and efficacy of Flow Re-Direction Endoluminal Device System (FRED) in the treatment of intracranial aneurysms in the post-market environment
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
People in China mainland who have been treated with FRED. The patients for whom clinical data are available
Disqualifiers
Patients who met the inclusion criteria at all time points were required to be included in the study. Therefore, no specific exclusion criteria were set.
Trial population
Patient who has implanted at least one observational device in China mainland
Trial design
Design model
Cohort
Time perspective
Retrospective
Treatments tested in this trial
Flow Re-Direction Endoluminal Device System(FRED)
DeviceFlow Diverter (FD) devices are developed based on reconstructing the parent artery's lumen. FDs are designed with a denser mesh compared to conventional intracranial stents. By covering the aneurysm neck, these stents redirect blood flow away from the aneurysm, promoting intra-aneurysmal flow stagnation and subsequent thrombosis formation. Currently, FDs are primarily used for the treatment of wide-neck aneurysms.
Treatment groups
No treatment groups listed
Trial outcomes
Primary outcomes
1
O'Kelly-Marotta, OKM grade (Imaging Evaluation of a Target Aneurysm)
Based on the evaluation of imaging results, the treatment of aneurysms was classified according to the following criteria. Digital Subtraction Angiography (DSA), Magnetic Resonance Angiography (MRA), or Computed Tomography Angiography (CTA) are acceptable, and it is recommended base CTA. The purpose of imaging follow-up information collection is to observe the effect of on the long-term closure of the aneurysm after treatment. Complete closure of the aneurysm would be associated with increased safety.
Time frame
6 month, 1 year2
Raymond-Roy Grade (Adequate Occlusion Rate of Target Aneurysm)
Adequate Occlusion is defined as Raymond-Roy Grade I or Grade II on imaging evaluation of the target aneurysm.
Time frame
6 month, 1 year3
Technical Success rate
The technical success rate refers to the proportion of technically successful patients in the total number of patients. Technical success is defined as successful stent placement and meet following criteria: Stent fully cover the aneurysm neck; Good wall apposition; Perfusion of the parent artery; Retention of contrast agent within the aneurysm;
Time frame
Immediate post-procedure4
Re-sheathing performance
During procedure, the observational device can be retrieved / re-sheathed into the microcatheter and re-deployed at the desired target location or removed completely from the patient. But it must not be re-deployed more than three times. Re-sheath performance refers to the retrieving and re-deploying of observational device recorded during the procedure. Information such as the number of recoveries and the number of re-sheathings, the success rate of re-opening and other information are recorded to evaluate the re-sheath performance of the observational device.
Time frame
Immediate post-procedureLocations
Sponsors and contacts
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Source ClinicalTrials.gov
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