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COCOON Ventricular Septal Occluder

The Cocoon VSD Occluder is a percutaneous, transcatheter ventricular septal defect (VSD) closure device intended for the occlusion of hemodynamically significant ventricular septal defects.

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    The Cocoon VSD Occluder is a self expandable double disk device manufactured from braided Nitinol wires coated with Platinum atoms (up to 25μm) using nano fusion technology by plasma deposition.

    Platinum coating makes Cocoon Occluders

    • More Biocompatible
    • Non allergic
    • Non corrosive
    • More Radiopaque for easy positioning in the defect

    The design of the occluder is a soft central waist and two strong discs.The waist diameter is corresponding to the defect size. Compressing the soft central waist elongates the device longitudinally instead of radially and avoids stenting of the defect.

    The discs are designed to withstand high left ventricular pressure.

    The discs are filled with polypropylene fabric which aids in total occlusion of defect.



    • Delivery Sheath with hemostasis valve adapter - used to deliver the device.
    • Dilator – used to ease penetration of tissue
    • Loader – used to introduce the Cocoon VSD Occluder into the delivery sheath.
    • Delivery cable – The device is screwed onto the distal tip of the delivery cable, which allows for placement and retrieval of the device. The delivery cable with cable sheath is packed seperately from the other accessories. The delivery cable cannot be used with other Cocoon occluders.
    • The Cocoon VSD Occluder Accessory set is available in 6F, 7Fand 8F sizes.
    • Transcatheter closure of patent ductus arteriosis with a self-expanding platinum-coated nitinol device
    • “Platinum coated Cocoon Occluders prevents Nickel release”

      Key points

      • Very low Nickel release
      • No report of  allergic reactions to Nickel
      • Zero incidence of Nickel allergic reactions and device-related erosion
    • Early Experiences Using Cocoon Occluders for Closure of a Ventricular Septal Defect (VSD)

      J Cardiovasc Imaging. 2018 Sep;26(3):165-174


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