Multi-Lumen Catheter TRIZ Cases

Multiple dopant zones in an LDMOS drain well preserve breakdown voltage and resist the Kirk effect as device dimensions shrink.

Graded dopant zones in an LDMOS drain well curb Kirk effect and base pushout while maintaining breakdown voltage in scaled devices.

A pull-force breakaway connector lets urinary catheter tubing disconnect safely while preserving balloon inflation and normal urine flow.

Triangular internal ribs keep the tubing lumen partly open under kinking or crushing, sustaining flow and reducing dialysis alarms.

Air injection and tube expansion close the gap between a catheter tube and ring, enabling stable laser welding with less deformation and blockage.

Integrated side lumens replace glued wire jackets in catheter shafts, cutting assembly time and improving alignment for steerable designs.

A nested coaxial connector uses UV-curable adhesive reservoirs to create a slim, pressure-tight cryoprobe joint for endoscopic use.

Internal triangular ribs keep part of the lumen open during kinking or crushing, reducing dialysis flow interruptions and alarms.

A lower-melting connecting layer and reinforcing structure help welded multi-lumen catheter tubes resist thinning, collapse, and guide wire protrusion.

Anchoring wire loops and radial arrays secure intravascular sensors in thin vessels while minimizing blood flow obstruction and migration.

A coaxial ring connector contacts catheter surface circuits directly, removing fragile wires, soldering, and welding to simplify assembly.

An inflatable balloon placed within 20 mm of the pressure sensor keeps the esophageal wall off the catheter for more reliable pressure readings.

A multi-lumen catheter conditions cerebrospinal fluid by selectively removing toxins and returning treated CSF to speed turnover and limit reabsorption.

A braided auxiliary lumen that shifts relative to reinforcement members improves steering, torque uniformity, and tear resistance in catheters.

Separate injection and drainage lumens provide long-term cavity access for repeated localized chemotherapy with less invasive follow-up procedures.

A distal tip chamber and deployment mechanism enable controlled delivery of bio-absorbable foam through a scope for less-invasive GI treatment.

Curved and straight lumen paths with pull-wires let a steerable catheter form variable loops and improve distal tip control in complex vasculature.

An adjustable reservoir tube sets single-dose volume for repeated heart failure injections while limiting residual medication interference.

Fenestrations infuse antiseptics while an abrasive tip debrides biofilm and fibrin sheath, helping preserve venous access.

A wall-embedded guide wire cavity preserves central lumen space while control wires bend the insertion sleeve for safer, more precise vascular navigation.

A sheath-flow catheter keeps therapeutic cells coaxially aligned and laminar, reducing shear stress and clumping in standard fluid lines.

A deployable sterile sheath unfolds from inside the catheter to cover the tip and shaft, limiting contamination, bacterial drag, and urethral shear.

A flexible circuit and in-balloon electrodes shrink catheter profile while pressure and temperature feedback help prevent burst during shock wave treatment.

A dual-lumen catheter uses venting and siphon-assisted drainage to prevent air locks, improving urine output and pressure measurement accuracy.

A single dual-lumen cannula drains the right atrium and pulmonary artery to unload the left ventricle while reducing VA ECMO access sites.

Separate infusion and withdrawal lumens enable direct CNS drug delivery and cleaner CSF sampling without interrupting therapy.

Separate cranial flow paths allow simultaneous drug delivery and CSF sampling without cross-contamination, improving monitoring under the scalp.

A movable separator and stylet create a sealed dual-lumen catheter path that limits tissue trauma and blocks air during CED delivery.

Reinforcing filaments, multiple lumens, and tip articulation improve cannulation through tortuous anatomy while reducing device exchanges and tissue trauma.

Integrated medication conduits let a drainage catheter deliver local anesthetic while draining fluid, reducing pain and separate administration steps.

Tangential flow filtration and modular thermal, light, and separation steps condition CSF to remove contaminants and tune fluid properties.

A high-melting connection member joins separated catheter tubes to prevent internal burrs and keep inserted devices moving smoothly.

Mirrored multi-outlet dual lumens improve intraperitoneal drug distribution, enabling smaller infusion volumes and less patient discomfort.

A separate non-fluidic lumen houses a patency instrument, enabling IV blockage checks and maintenance without device removal or fluid interruption.

Tapered, asymmetrical arterial and venous openings improve flow separation, reducing recirculation and occlusion in hemodialysis.

A telescoping catheter shaft and distal shaft member reduce kinking and bubble formation while keeping the imaging core clear in blood vessels.

A coaxial transseptal ECMO catheter reaches the aorta through the heart to maintain blood flow while avoiding large-bore arterial cannulas.

An invertible sleeve sliding over a funnel helps pull large soft clots into a middle catheter lumen with fewer retrieval attempts.

Staggered tube sections create gradual rigidity changes in a multi-lumen catheter shaft, reducing boundary kinks while improving sensor-guided operability.

Separate infusion and blood-draw lumens enable sampling without stopping fluid delivery, helping reduce needle sticks, infection risk, and occlusion.

Separate guiding and aspiration lumens keep the catheter anchored while preserving suction power for more stable clot removal.

A sealed stylet lumen and stepped capillary tip improve CED drug distribution, limit air bubbles and reflux, and support conscious sedation.

Narrowed enclosure segments keep shock wave emitters centered, enabling uniform plaque treatment while reducing vessel dissection and perforation.

A lever-actuated hemostasis valve varies aspiration flow to limit blood loss while maintaining effective thrombus capture during thrombectomy.

A convergent-divergent catheter lumen creates cavitation shockwaves that break up calcified vascular lesions and improve vessel opening.

Curved and straight pull-wire paths let a steerable catheter form variable loops and improve distal tip control for precise mapping and ablation.

Automated valve and pump control clears stagnant blood during single-to-double needle conversion and verifies safe procedure continuation.

A reusable clamping tool replaces heat shrink tubing to weld catheter components with more uniform pressure, wall thickness, and joint strength.

Separate antimicrobial and wash lumens clean catheter biofilm during use, reducing infection risk without exposing the bladder to biocides.

Separate delivery and withdrawal pathways prevent CSF sample contamination while enabling reproducible CNS drug infusion and concentration monitoring.

A funnel-guided stylet with paddle feedback improves handling, lubrication, and certainty when deploying intravesical devices into the bladder.

A bidirectional vascular cannula device uses a secondary opening and moving mechanism to deliver oxygenated blood in both directions within a blood vessel.