Laser-Cut Intravascular Tube Structure for Flex and Torque Balance

The patent replaces traditional mechanical micro-machining techniques with laser cutting technology. The laser cutting system uses optical energy instead of mechanical cutting elements, enabling faster processing speeds while maintaining or improving cut precision and geometric flexibility. This substitution resolves the contradiction by eliminating the physical constraints of mechanical cutting tools.

The patent changes the fundamental processing parameter from mechanical force to thermal energy (laser). This parameter change enables variable cut geometries and improved precision while simultaneously increasing processing speed, as laser cutting operates without the speed limitations of mechanical tool engagement.

The patent applies local quality by creating a non-uniform reinforcement structure along the catheter length. The reinforcement layer has varying cut patterns where the distal end features more extensive cutting for flexibility, while the proximal end has less cutting for torque transmission. This spatial variation in structural properties resolves the contradiction by optimizing each section for its specific functional requirement.

The patent segments the reinforcement layer into different regions with distinct cut patterns. The distal portion is segmented with higher density cuts for flexibility, while the proximal portion has lower density cuts for strength. This segmentation allows the single reinforcement layer to simultaneously provide both flexibility and torque transmission in different locations.

The patent creates a composite reinforcement structure by combining metal alloy material with a laser-cut patterned design. Instead of simply increasing thickness, the reinforcement layer uses a composite approach where the metallic material provides base strength while the laser-cut geometry adds structural optimization. This resolves the contradiction by achieving enhanced strength through geometric complexity rather than material quantity.

The patent employs helical and curved cut patterns in the reinforcement layer rather than simple straight cuts. These curved geometries provide structural efficiency that enhances torque transmission and tensile strength without requiring increased thickness. The curved patterns distribute stress more effectively, achieving strength improvements through geometric design rather than material addition.