Neutral Hybrid Braid Structure for Rotation-Stable Medical Delivery

The patent applies asymmetry by using wires of different diameters in the braid construction. Specifically, it combines larger diameter wires (e.g., 0.002 inches) with smaller diameter wires (e.g., 0.001 inches) in a hybrid braid pattern. This asymmetric wire size distribution allows the device to achieve desired mechanical properties like stiffness and cross-sectional area while creating a neutral braid configuration that balances helical biases to prevent unintentional rotation during delivery.

The patent applies preliminary anti-action by designing the braid configuration to preemptively counteract rotational forces before they can affect the threaded coupling. The neutral hybrid braid pattern is constructed with alternating clockwise and counterclockwise wire crossings that balance helical biases, creating a structure that resists rotation from the outset. This preliminary counter-balancing prevents the rotational forces that would otherwise cause detachment or binding of the threaded coupling during delivery.

The patent applies local quality by implementing the neutral hybrid braid pattern with specific localized characteristics. The braid construction uses alternating clockwise and counterclockwise wire crossings at specific high points, creating localized zones of balanced helical bias. This approach achieves rotational neutrality through targeted local variations in wire crossing patterns rather than uniform complexity throughout the entire device, thereby reducing overall device complexity while maintaining delivery stability.