Vein-loaded stent system to occlude wide-necked aneurysms

Area of Science:

• Vascular Surgery
• Biomedical Engineering
• Interventional Radiology

Background:

• Wide-necked aneurysms pose significant treatment challenges.
• Current endovascular techniques may interrupt parent artery flow.
• A novel approach is needed for immediate aneurysm closure without compromising arterial patency.

Purpose of the Study:

• To evaluate a new vein-loaded stent system for treating experimental wide-necked aneurysms.
• To assess the impact of ticlopidine on parent artery patency after stent implantation.

Main Methods:

• Ten wide-necked aneurysms in canine common carotid arteries were treated.
• A modified vein-loaded stent system was implanted.
• Animals were divided into two groups: ticlopidine administration and no anticoagulation.

Main Results:

• Immediate complete aneurysm obliteration and parent artery patency were observed in successfully implanted vessels.
• One-week follow-up showed 67% aneurysm occlusion with parent artery patency in the ticlopidine group.
• No parent artery patency was observed in the untreated group; ticlopidine improved patency but remained lower than conventional stents.

Conclusions:

• The vein-loaded stent system provides immediate aneurysm closure.
• Ticlopidine administration enhances parent artery patency post-implantation.
• Further device modifications are necessary for successful clinical translation.