Multi-Lumen Catheter TRIZ Cases

Rotatable gears with detents adjust wire tension to prevent premature deflection in small-diameter endoscopes.

A Venturi-agitating tip assembly generates enriched medical suspensions using fluid dynamics instead of mechanical impellers.

Replacing adhesive bonding with an overmolded thermoplastic hub eliminates separation risks and reduces fluid turbulence for faster balloon inflation.

A catheter uses a permeable tip to maintain position while applying negative pressure through a drainage lumen.

Segmented deflectable tip access sheaths with nested lumens reduce endoscope overhaul needs.

A multi-lumen catheter integrates a vena cava filter to provide central venous access and embolic protection in a single device.

Nested lumens and unattached compression coils in a deflectable catheter shaft reduce axial compression and snaking during navigation.

A braided tubular device reinforces sphincters via elastic deformation, resolving the contradiction between enhanced competency and tissue erosion risks.

A modular tunneled catheter system featuring a trimmable lumen and adjustable cuff to customize fit for individual patient measurements.

Segmented catheter hubs with nested extension conduits reduce tissue trauma during hemodialysis tunneling procedures.

Segmented catheter tips provide localized rigidity to stabilize the distal end, reducing reentry forces and preventing vessel dissection.

Curving the distal tip into a continuous loop prevents sidewall contact, eliminating fibrin sheath formation and recirculation in dual-lumen dialysis catheters.

A hydraulically driven surgical apparatus uses fluid pressure to deform a soft tube, enabling precise bending and twisting during medical procedures.

An expansible distal wall alters lumen opening width via pressure differentials, removing blockages while maintaining low intracranial pressure.

A catheter sidewall recess defines an external fluid pathway communicating with a side opening to maintain lumen patency.

A tapered catheter conduit segments lumen diameters to balance mechanical strength with fluid flow capacity.

Segmented drain wells with graded dopant concentrations resolve the trade-off between switching speed and base pushout susceptibility.

A dilator with skived portions forms a rapid exchange port for direct vessel entry.

Segmenting the catheter lumen allows simultaneous delivery of varying coil sizes, resolving non-uniform distribution and improving aneurysm occlusion rates.

A sliding manifold segments the catheter shaft to allow intraoperative length trimming, eliminating the need for multiple fixed-length inventory sizes.

Nested expandable cage and bent guidewire increase sweep coverage to macerate organized thrombus while controlling device complexity.

Segmented manifold and flexible sleeve maintain reduced pressure at bone tissue sites while preventing aperture clogging.

A Y-shaped probe device merges suction and feeding conduits into a single catheter structure.

A segmented cytology brush uses variable bristle stiffness to maximize tissue sample collection and retention within the biliary tract.

A catheter houses an oxygen sensing element within a sealed lumen to detect dissolved oxygen in urine.

Corrugated hemodialysis catheter tips prevent fibrin sheath blockages and positional occlusion by adapting to vessel contours.

Variable stiffness in a cardiac lead reduces strain at the proximal-distal transition, preventing kinking during bending.

An engagement catheter with a skirt and suction mechanism pulls the atrial wall away from the pericardial space to create a safe puncture pathway.

Deflectable catheter uses puller wires to position the tip electrode parallel to cardiac tissue for precise ablation.

Angled dialysis catheter lumens prevent vessel wall suction and recirculation during long-term use.

Extendible memory metal needles anchor into heart tissue, reducing puncture risks and eliminating blood thinner requirements.

A CMOS camera train holder positions imaging components off-center within a flexible polymer catheter body to maximize internal volume.

Segmented tubes resolve sealing contradictions by enabling effective mucus removal from the Eustachian tube without damaging the ear drum.

Pre-crosslinked PBA liners maintain lumen patency during reflow bonding, eliminating setup wires and improving leak resistance.

A pediatric catheter features a tapered distal tip and an asymmetric shaft with concave walls to enhance guidewire tracking.

Nitinol umbrella wire members cap hemodialysis catheter lumens to prevent thrombus formation during idle periods.

Segmented filter openings enable thrombus retention while proximal ports allow pressure monitoring, avoiding anticoagulation bleeding risks.

Fixed optical fiber positioning relative to a radiopaque marker eliminates reliance on contrast agents and operator intuition for accurate thrombus dissolution.

Interlocking convex and concave portions in a helical tube maintain straight shape via compression, resolving variable insertability in endoscope navigation.

A dual-tube catheter design enables independent rotation of an inner member within a stationary outer sheath to navigate complex vascular paths.

Nested conduits deliver reduced pressure while extracting exudates, resolving the trade-off between continuous therapy and bacterial accumulation.

Segmented inner and outer shafts provide independent deflection and rotation, resolving the trade-off between maneuvering versatility and device complexity.

A catheter tip uses inner liner sections with different hardness to provide navigability through tortuous vasculature.

A flexible tunneler sheath with asymmetric connection features enables secure attachment to multi-lumen catheters.

Deflectable member shifts configurations to direct guidewires through multi-lumen catheter shafts, eliminating wire exchanges during septal crossing.

Radial flap portions extend from the catheter body to space the aspiration port away from the vessel wall, preventing blockage and maintaining fluid flow rate.

A thrombus aspiration catheter connects a flexible terminal tube to a triple lumen front end for improved navigation.

Multiple fenestrations along the cannula length discharge fluid into the vessel in opposing directions to resolve limb ischemia during VA ECMO procedures.

Segmented distal openings in a multilumen catheter maintain blood flow by preventing lumen obstructions during extracorporeal treatments.