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.