Safety and efficacy of honeycomb microporous covered stent (NCVC-CS1) for the treatment of intracranial aneurysms: a multicenter, uncontrolled, exploratory trial

Phase 1

Completed

• Conditions: Wide neck or large intracranial aneurysms which are difficult to be cured by conventional surgical or endovascular procedures.

• Registration Number: JPRN-jRCT1090220242
• Lead Sponsor: CVC-CS1 Clinical Trial Office

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2016-02-03
• Study Completion: 2019-09-30
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

(Provisional registration)
1. Age between 20 and 75 years old.
2. Target lesion is an unruptured aneurysm regardless of prior treatment diagnosed by angiography, CT angiography, or MR angiography within 180 days of provisional registration.
i) Target aneurysm located in petrous/cavernous portion of internal carotid artery, intradural vertebral artery except for its union, or basilar artery proximal to the orifice of superior cerebellar artery.
ii) Target aneurysm is considered difficult to treat by conventional surgical/endovascular procedures
iii) Target aneurysm with a sac diameter exceeding 7 mm.
iv) Target aneurysm with a neck diameter over 4 mm or with a ratio dome/neck smaller than 2.
3. Modified Rankin score of 3 or less
4. Agreement for participating in the study and informed consent signed by the patient.

(Proper registration)
1. Target lesion must be reconfirned by angiography or interventional procedure and is compatible with the conditions as follows:
i) Target aneurysm located in petrous/cavernous portion of internal carotid artery, intradural vertebral artry except for its union, or basilar artery below the orifice of superior cerebellar artery.
ii) Target aneurysm is considered difficult to treat by conventional surgical/endovascular procedures
iii) Target aneurysm with a sac diameter exceeding 7 mm.
iv) Target aneurysm with a neck diameter over 4 mm or with a ratio dome/neck smaller than 2.
v) Parent artery of target aneurysm is accessible by the investigational devices
vi) The diameter of the parent artery between 3.5 and 5 mm.

Exclusion Criteria

(Provisional registration)
1. Any invasive surgical procedure within 30 days before registration.
2. Prior stent implantation at the site of target aneurysm
3. Existence of intracranial tumor, arteriovenous malformation for which any intervention is considered necessary, or co-existence of unruptured intracranial aneurysm whose sac diameter over 5mm within the target vessel.
4. Coexistence of other unruptured intracranial aneurysms which are planned for intervention
5. Target vessel not suitable for delivery and placement of covered stent because of anatomical configuration (i.e. severe bend or tortuosity).
6. More than 50% stenosis in the target vessel or its proximity including extracranial region.
7. Any intracranial hemorrhage within 42 days before registration.
8. Co-morbid conditions that may limit survival to less than 6 months, or difficult to observe the patient for 6 months.
9. Renal dysfunction whose serum creatinine more than 2.0
10. Contraindications to antiplatelet or anticoagulant treatment because of allergy or hemorrhagic diathesis.
11. Platelets less than 100,000/mm3 or known dysfunction of platelets.
12. Active bacterial infection.
13. Any cardiac, hematological, intracranial, or vessel disease which are considered to have high risk of neurological events (severe cardiac failure, atrial fibrillation, arteritis, known carotid artery stenosis, etc.).
14. History of severe allergy to contrast dye.
15. Known allergy to cobalt-chromium alloy and polyurethane. clopidogrel, heparin, nitinol, local or general anesthesia
16. Subjects who have enrolled, or are planned to participate in other clinical trial or intervention study.
17. Pregnant woman
18. Unsuitable patients judged by the physician attending this trial.

(Proper registration)
1. Hisutory of any invasive surgical procedure after the provisional registraton.
2. Any new neurological signs within 24 hours prior to the procedure.

Study & Design

• Study Type: Interventional
• Study Design: Not specified