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.

A catheter outer shaft uses inner and outer braided layers to navigate tortuous anatomy while maintaining axial strength.

Segmented capillary channels distribute low fluid volumes across large areas, reducing medication waste and improving delivery precision.

Radially expandable implant frames enable precise embolic material delivery through controlled vessel occlusion.

Segmented multi-lumenal tubing provides isolated irrigation flows to prevent cross-contamination while eliminating the need for multiple pumps.

A hemodialysis catheter features a sloped distal tip and tapered outer diameter to maintain large luminal cross-sections for consistent blood flow.

A tubular instrument with a multi-material structure reduces vein trauma while maintaining axial stiffness to extend the catheter dwell period.

A catheter bag-shaped body expands its inner diameter when pressurized to facilitate medical implement passage.

A shunt valve assembly regulates cerebral spinal fluid drainage through a breaking pressure mechanism and spacer member projections.

Segmented catheter anchors in walled-off necrotic sites, resolving inefficiencies from poor anatomical adaptation during irrigation procedures.

A dual-lumen pyelo-ureteral stent uses a lumen-less distal limb to reduce diameter at the ureteropelvic junction, promoting healing while maintaining drainage.

A medical device handle mechanism uses a single trigger to control irrigation and vacuum suction for kidney stone removal.

A percutaneous catheter with an expandable non-coated portion reduces inner diameter during insertion.

A pressure sensor catheter uses a transfer tube to guide fluid pressure from the distal side of a stenosis to an external sensor.

Intravascular guide catheters use embedded crescent channels within polymer layers to transport contrast medium.

Heating a tubular resin mediator between the core member and shaft eliminates adhesive steps while ensuring strong structural integrity.

Window passage openings in a multiple-lumen microcatheter tube enable media exchange while preserving mechanical stability.

A suction cannula draws mucosal tissue into contact with a distal surface to stabilize the target area before needle insertion.

Microfluidic catheter devices deliver therapeutic agents via convection-enhanced delivery to target brain regions.

An aspiration catheter uses a centering assembly to position the distal end within a blood vessel, preventing vessel wall ingestion during thrombus extraction.

A quadruple-lumen catheter uses a longitudinal partition to separate blood return and removal channels, preventing fluid mixing.

A notch in the connecting tube engages a rotation restriction portion to prevent tilting forces on fixing sections, maintaining watertightness during operation.