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.