Multi-Lumen Catheter TRIZ Cases

Dynamic port closure retains anticoagulant solution during idle periods, preventing fibrin sheath formation and vein obstruction in dialysis.

An elongated adapter connects stylets and tunneler devices to multi-lumen catheters, enabling precise vascular implantation.

Segmented dual-lumen design maintains irrigation flow while instruments occupy the main channel, eliminating guidewire removal steps.

Asymmetric lateral openings in a multi-lumen catheter minimize treated blood recirculation, maintaining high efficiency during hemodialysis.

Asymmetrical lumen cross-sections balance arterial and venous blood flow, reducing recirculation and thrombus formation at the catheter tip.

A dialysis catheter fixing means uses a movable opening part to secure the tube section.

Differential heating prevents creases at the distal tip while bonding the outer jacket to the inner liner.

A dual lumen catheter separates surgical access from inflation to maintain stomach integrity during minimally invasive procedures.

Segmented channels with a pressure switch isolate cleaning reagents from the bloodstream to prevent biofilm infections.

A guide tube features multiple instrument exit points to redirect tools at the distal end without retracting the device.

A catheter flat beam uses a single continuous puller wire to reduce component complexity and improve durability during navigation through heart tubular regions.

A catheter integrates a guidewire lumen and a snare lumen to navigate around anatomical structures.

A fluid flow switching device maintains continuous hydraulic connections to a three-way bladder catheter.

Voltage-driven actuatable structures adjust cannula inner diameters in situ, eliminating inventory waste from mismatched fixed-size devices.

Guide rings distribute bending stress to prevent kinking while maintaining tool channel size in tortuous anatomy.

A dual lumen catheter routes blood pressure via a dedicated lumen to a proximal handle-mounted sensor for distal measurement.

Segmented catheters with real-time optical feedback reduce vessel wall perforation risks while shortening procedure times for coronary artery treatments.

Segmented lumens in a fused catheter tip measure fluid pressure differences across valves while delivering fluids or electrical pulses.

A fluid detection assembly measures electrical signal propagation delay between spaced wires to identify contamination types.

Inflatable internal balloon replaces membrane valves, eliminating clogging and stretching issues while ensuring reliable reflux prevention.

A venous closure catheter delivers sclerosing solution through distal apertures while a circumferential flange abrades the vein wall upon removal.

Internal slits in the irrigation line create localized compliance that absorbs vacuum surges, preventing anterior chamber collapse after occlusion break.

Stepped dual-lumen connectors enable simultaneous therapeutic delivery and CSF withdrawal without cross-contamination.

A catheter radiopaque marker fixed with a radial gap to absorb deformation and maintain distal flexibility.

Trocar tube and bypass tubes create a ventriculoarterial pathway, maintaining cardiac output during transapical valve implantation.