Cocoon VSD Occluder

The Cocoon VSD Occluder, developed by Sahajanand Medical Technologies (SMT) and manufactured by Vascular Innovations Co., Ltd., is an advanced self-expanding, double-disc device engineered for the transcatheter closure of ventricular septal defects (VSD), addressing both membranous and muscular defects in congenital or acquired heart conditions. Constructed from nitinol wire with a platinum nanocoating applied via nanofusion plasma deposition, it offers biocompatibility, corrosion resistance, non-allergic properties, and superior radiopacity, ensuring precise fluoroscopic deployment. Preclinical studies in swine models demonstrate complete defect closure by day 30, with effective tissue incorporation.

Material & Design

• Nitinol wire frame with ultrathin platinum nanocoating to minimize nickel leaching and enhance visibility
• Double-disc design filled with polypropylene fabric to promote rapid thrombogenicity and effective closure
• Available in 4 mm, 7 mm, and 10 mm waist lengths to match varying septal thicknesses and VSD types
• Recapturable and redeployable (with secure delivery cable connection) for accurate procedural positioning

Size Range and Delivery

• 15 SKUs with waist diameters (3.25–12 mm), disc diameters (10–18 mm), and waist lengths (4, 7, 10 mm) for VSD sizes from 2 mm to 11 mm
• Compatible with 6F or 7F sheaths (83 cm usable length), 89 cm dilators, and 9 cm loaders
• Delivery system includes a 0.030″ diameter, 140 cm delivery cable and a sheath (0.055″ inner diameter, 0.079″ outer diameter, 125 cm length)
• Preclinical echo images confirm complete defect closure from day 1 to day 30, with explants showing tissue integration