Multi-Lumen Catheter TRIZ Cases

Segmented catheter lumens trim to asymmetric lengths via a transverse wire, enabling subcutaneous port identification without imaging.

Segmenting the center camera lumen from an annular fluid pathway resolves the trade-off between visualization capability and fluid flow rate.

Nested within an endoscope working channel, the flexible catheter robotic system resolves device complexity constraints while maintaining surgical precision.

Segmented lumens prevent drug mixing before injection, reducing pain from multiple venous accesses.

Retainer device positions a curvable tube outside the radiation field, reducing healthcare worker exposure while maintaining ergonomic access.

A sliding stylet mechanism contracts a catheter expansion portion radially inward for minimally invasive insertion.

Positioning a high-melting sheet in the mold cavity creates separated tip configurations while retractable pins prevent core deflection.

A recanalization catheter assembly uses a guide member and rotary ablation tool to navigate occluded vessels.

Curved internal walls redirect blood flow in multi-lumen catheters, preventing port occlusion and firehosing during high-rate hemodialysis exchanges.

A symmetrical tip acute catheter with diametrically opposed side openings separates arterial and venous blood flow streams.

Tri-lumen tubing and jet pump housing integrate ventilation and oxygen delivery through selective air entrainment.

A bi-directional fluid injection cannula diverts flow through an antegrade outlet to enable opposite direction delivery via a single vessel entry.

Segmented braided and unbraided catheter walls balance rigidity and steering while a wire loop stabilizes the fossa ovalis for precise puncture.

Radially offset aeration lumens in the tube jacket increase frontal opening area for homogeneous deep-seated wound drainage without increasing tissue trauma.

Fluid pressure dilation opens body lumens without direct contact, reducing tissue trauma during difficult guidewire access.

A catheter with an expandable distal section delivers viscous hydrogels through sinus endoscopes.

Segmented lumens and a shape-memory guide-wire align the cardiac device in the left atrial appendage, reducing anatomy damage risk.

A multi-lumen dialysis catheter uses arch-shaped wall portions and a tapered distal segment to maintain structural integrity during insertion.

Concentric catheter shafts manage fluid flow for balloon inflation and RF energy transmission.

Segmented tubular members balance pushability with tortuous vessel access through spatially varying mechanical properties.

Shape memory anchors secure the distal tip of a low profile catheter, reducing protein deposition surface area and preventing thrombus formation.

Segmented hub design enables post-implantation tunneling and component replacement without removing the implanted catheter.

An intermediary insert with radiopaque and anti-thrombogenic properties reduces positional occlusion against vessel walls.

A discrete radiopaque marker at the proximal opening enables precise catheter placement, preventing cardiac perforation and arrhythmias during insertion.

A delivery tube integrates absorbent material within its lumen to capture tissue site liquid during reduced pressure therapy.

Cross-linked catheter sections with slit openings resolve durability versus flexibility trade-offs during rough guide wire handling.

Curved catheter design minimizes intimal tissue engagement and reduces clotting risk during long-term hemodialysis.

A trans-eustachian multi-function system anchors within the eustachian tube to provide direct access to the middle ear space.

Proximally fused multitube catheter reduces incision count while maintaining independent distal movement and stable fluid flow.

A concentric two-tube catheter system changes tip shape via inner member sliding to enable precise left ventricle access.

Automated robotic system controls catheter withdrawal and agent dosage to ensure uniform distribution, preventing uneven dosing complications.

A coaxial catheter assembly integrates cooling and drainage functions within the intrathecal space.

A catheter switching mechanism selectively communicates between lumens to maintain independent fluid flow paths.

A catheter tip separates from the body via a breakable ring connection, preventing arterial damage during embolic fluid injection procedures.

Flared distal catheter portion increases area moment of inertia to prevent tip whipping, reducing vessel damage risk during power injection.

Slot-based positioning secures segmented electrodes on compliant catheters, resolving manufacturing precision challenges while maintaining structural integrity.

A deployable origami bellows maintains a fixed inner diameter to prevent buckling of flexible catheters under axial compression forces.

Resin-reinforced distal segments enable side hole formation without damaging lead insulation, resolving manufacturing trade-offs.

An ECMO cannula uses a bent accessory lumen to redirect anterograde flow, reducing arterial occlusion risk without separate reperfusion devices.

A catheter assembly uses a hollow needle that converts stored potential energy into kinetic force to penetrate tissue.

A steerable catheter robotic system uses flexible multi-lumen assemblies to teleoperate articulating instruments with high degrees of freedom.

An integrated veterinary catheter delivers oxygen and lidocaine through separate lumens, easing patient discomfort during respiratory treatment.

A coaxial dual lumen cannula integrates drainage and infusion tubes within a single connector assembly to minimize internal welds.

Styrene-butadiene block copolymer bonds polyvinyl chloride tubes to polypropylene parts.

Helical braided reinforcement eliminates pull wires to resolve torque non-homogeneity and tearing risks in steerable catheters.

Segmentation separates the hub from the implanted catheter for external assembly. Intermediary collars provide stable mechanical locking and fluid seals.

Nested catheter segments enable articulation for precise valve leaflet modification, resolving complexity constraints in minimally invasive cardiac procedures.

A dual-chamber infusion pump delivers multiple medicaments at different rates through separate fluid passageways.

A multilumen catheter uses tension members to steer and deploy medical devices through tortuous anatomy.