Multi-Lumen Catheter TRIZ Cases

A dispensing device delivers multiple component materials through a manifold with separate lumens and flexible cannulae.

A catheter connector assembly secures proximal tails formed by a selective slit to create a robust mechanical joint between the device and luer fittings.

Nested lumen structure decouples torque from fiber twist, reducing vibration impact on shape sensing accuracy.

Staggered slits of varying lengths prevent simultaneous tissue obstruction, ensuring reliable long-term drainage in the peritoneum.

A nested operable member in a hemodialysis catheter removes external thrombus to prevent lumen blockage during treatment.

A dual-lumen catheter uses an expandable inner tube to seal or expose outer openings for controlled fluid delivery.

A peripherally inserted central catheter with a dedicated flushing lumen and valve redirects fluid flow back through the proximal portion.

Resilient cutting element with sharp endings mechanically irritates vein walls, enabling minimally invasive closure while reducing skin inflammation risks.

Segmented lumens position distal openings independently to resolve alignment precision challenges while maintaining a thin profile.

Extruding material over stiff lumen tubes maintains patency without mandrels, reducing manufacturing complexity and cost.