Catheter TRIZ Cases

Correcting sensor drift and scale factor errors by comparing fiber optic readings against shuttle gas pressure references.

A continuous biological sensor method validates initial calibration values against reference data before generating information.

A lancing device damping ring engages the returning lancet assembly to constrain rebound motion.

A biosensing device uses microneedle arrays and wicking components to monitor analytes in interstitial fluid and sweat.

A nested catheter system advances a stiffened cannula through a base catheter to access blood flow.

Optical triangulation measures luminal dimensions under deformational stress, resolving measurement precision limits in existing imaging technologies.

Laser-ablated two-electrode probes measure quasi-Cottrell current profiles to calibrate voltage drift and reduce biofouling in implantable sensors.

An elliptical non-flexible body positions light elements to maintain optimal distance across varying finger thicknesses.

A dual-sensor catheter measures flow velocity and cross-sectional area to calculate fractional flow reserve.

Segmented cryo-catheter design manages refrigerant flow through variable cross-sectional areas.

A catheter-based cutting device uses radiofrequency energy to ablate the aortic septum.

Extrusion integrates magnets into unitary tubing, eliminating fusion complexity and reducing manufacturing time.

A catheter shaft uses a woven metallic wire reinforcement body to boost breaking strength at the distal end.

Fuzzy logic rules and curve fitting eliminate motion artifacts from oscillometric pulses to determine precise systolic and diastolic pressures.

A lancing device uses a segmented drive mechanism with separate lancing and restoring springs to accelerate the lancet holder.

A microneedle sensor applies sweeping voltage to measure pharmaceutical concentrations in dermal interstitial fluid.

Nested plugs and a sealed chamber prevent fluid leakage along the suture during tip deflection, eliminating the need for continuous user maintenance.

An optical fiber detector guides light beams through a catheter to assess mucosal tissue health.

A microneedle patch paired with a glycerogel osmotic layer and paper microfluidic channel extracts interstitial fluid via capillary wicking.

A cryoablation device manages coolant flow rates to create freeze-warm cycles.

A terahertz imaging catheter emits and receives radiation to generate volumetric lumen images.

A single-access vascular filter system intercepts embolic debris in cerebral arteries, reducing stroke risk without multiple access points.

Spatially separated planar coils apply phase delays to resolve measurement precision and device complexity contradictions for accurate cardiac ablation imaging.

Hydrophobic membranes restrict vascularization while enzyme-free electrodes maintain glucose detection precision despite tissue encapsulation.

Single optical fiber routes light to a linear CCD array, reducing manufacturing cost while maintaining triaxial force measurement precision.

An expandable balloon stabilizes a micro-spot laser to ablate submucosal tissue while protecting surrounding layers.

Segmented flexible electrode segments separated by nonconductive gaps maintain continuous tissue contact during heartbeats.

A pre-loaded sensor introducer assembly uses a trigger mechanism to position the detection device accurately under skin.

Placing electrodes on both sides of splines resolves the contradiction between high electrode density and small basket diameter.

Stepped inner surface accommodates protruding components while arcuate outer shape prevents snagging on blood vessel surfaces.

Incline cam portions and arms multiply linear travel of puller wires, resolving the trade-off between increased device complexity and limited handle size.

Continuous wavelet transforms generate reference signals to filter photoplethysmograph data, removing noise artifacts while maintaining measurement precision.

Iterative filtering of sparse point clouds generates high-resolution cardiac models, eliminating manual intervention and reducing processing errors.

Asymmetric irrigation passageways allow central thermal sensors, resolving measurement accuracy trade-offs in conventional center-axis designs.

Anchor pad with releasable retainer prevents longitudinal movement while allowing fluid line reconfiguration without obstructing flow.

A patient monitor uses a rotating vent cover to shield internal components from external contaminants while maintaining device stability.

A catheter structural support member combines a proximal polymer hypotube with a distal flexible segment to provide varying stiffness along the device length.

A microprocessor controls electrosurgical probe power by calculating tissue resistance and adjusting current limits to maintain precise waveform delivery.

A retrospective calibration method processes electrode current signals using discrete wavelet decomposition and machine learning models to calculate final sensor glucose values.

A wireless biosensor device integrates a fastening clip to secure attachment within the gastrointestinal tract.

Rotating the touching element moves it linearly against the lancet drive, eliminating gaps that trap contamination and preventing painful vibrations.

A hinged polymeric catheter attachment system uses a high-friction conformable layer to securely hold the catheter hub.

Rolling the chip into a cylinder reduces volume while maintaining reliability through nested structural design.

Intersecting retainer channels constrain fluid supply tubes to eliminate tape reliance, reducing contamination risks during dressing changes.

Signal processing circuit discriminates individual physiological rhythms to count persons, resolving spatial resolution limits for stationary targets.

Metal contact pins and polymer latch configuration align analyte sensors, reducing data errors from misalignment.

Slit opening allows temporary folding of the elongate package, maintaining straight catheter disposition while minimizing storage volume.

Nested latches inside the clamshell structure prevent accidental uncoupling while simplifying alignment for medical procedures.

Movable guide member prevents vein rupture and debris buildup during phlebotomy through indwelling lines.