Introduction
The document provides technical specifications and performance details of the MemoCarna Atrial Septal Defect (ASD) Occluder, a medical device designed to treat atrial septal defects. It highlights the device's unique features, material composition, and performance benefits.

Specifications
The MemoCarna ASD Occluder is available in various sizes, with waist diameters ranging from 4.0±0.5 mm to 40.0±1.0 mm. The device features a Dature-shape braiding technology that ensures a flat disk after release, reducing the impact on blood flow and heart burden.

Material and Design
The device is made from Nitinol wires, which undergo a surface treatment to form a uniform oxide layer, reducing nickel ion release by 82%. The design includes a flower-shape occluder tip for safe deployment and a concave left disk to minimize thrombus formation.

Performance and Benefits
The MemoCarna ASD Occluder offers excellent deliverability and reduced metal implantation. It is 25% lighter than traditional occluders, with a decreased average height of 4mm, making it suitable for pediatric use. The device's design facilitates easy release and withdrawal, with a 25% reduction in pushability and a 39% easier withdrawal.

Nickel Ion Release
In vitro and animal experiments demonstrate a significant reduction in nickel ion release over time, with levels well below the CDRH's recommended concentration for safety.

Conclusion
The MemoCarna ASD Occluder is a technologically advanced device that offers improved biocompatibility, reduced nickel ion release, and enhanced performance, making it a suitable choice for treating atrial septal defects.