Chitosan-nanoclay embolic material for catheter-directed arterial embolization

Area of Science:

• Interventional Radiology
• Biomaterials Science
• Nanotechnology

Background:

• Transcatheter embolization is a key nonsurgical treatment in interventional radiology for vascular diseases.
• Current embolic agents require optimization for better catheter delivery and mechanical properties.

Purpose of the Study:

• To develop and characterize a novel gel embolic agent for transcatheter embolization.
• To optimize the gel's properties for enhanced catheter injectability and mechanical performance.

Main Methods:

• Formulation of a gel embolic agent using chitosan nanofibers and nanoclay.
• Optimization of gel properties by adjusting component ratios and solid content.
• Rheological studies, injection force measurements, and in vitro occlusion stability tests.

Main Results:

• The developed gel exhibited shear-thinning behavior, recoverability, and excellent catheter injectability.
• Tunable mechanical properties were achieved by varying gel composition.
• The gel demonstrated stable occlusion in vitro and possessed desirable hemocompatibility and cell biocompatibility.

Conclusions:

• The chitosan-nanoclay gel is a promising candidate for transcatheter embolization.
• The engineered gel offers improved performance characteristics for minimally invasive vascular occlusion.
• This biomaterial has significant potential for clinical application in interventional radiology.