Catheter TRIZ Cases

Inductive telemetry powers and reads an implanted MEMS sensor through the atrial septum, avoiding leads for accurate left atrial pressure monitoring.

A regulated voltage on the implantable device case suppresses electrochemical processes and reduces common-mode noise for accurate sensing.

Unidirectional valves and syringe-generated negative pressure divert waste blood before collection, reducing contamination and false-positive cultures.

A spaced plasma target creates pressure waves inside an inflatable balloon, fracturing vascular calcium while limiting light-guide damage.

Imprecise angle and power delivery can damage tissue; a rotatable member steers coherent beams for controlled surface and subsurface treatment.

A biocompatible housing and control module connect to an orthopedic implant to deliver measurement or stimulation patterns with less invasive surgery.

A top wall and perimeter wall form a cavity that conceals a transdermal glucose monitor and reduces visibility discomfort on the user's skin.

A tapered fiber assembly delivers sub-millisecond optical pulses that form plasma bubbles and pressure waves to fracture vascular lesions.

Rate-of-change and summed analyte metrics help flag moisture-related sensor faults before inaccurate readings mislead medication dosing.

Surrogate impedance models compare signals from multiple ICG electrode sets to distinguish healthy and pathologic aortic states.

Filtering and Transformer-based models process ECG time series to predict future stress and relaxation periods for user awareness.

Flexible polymer sensor arrays expand inside the atrium to improve cardiac signal coverage while preserving blood flow pathways.

Curved detector windows favor high-pulsatile blood-flow pathways, improving PPG signal quality and motion robustness.

Biopotential and photoelectric sensors are distributed across body locations to capture diverse signals with less weight and user stress.

Ring electrodes use inserts, collars, lumens, and bridge tubes to simplify assembly while supporting compact cardiac mapping.

A catheter uses side-emitting optical fibers to stimulate nitric oxide release, improve perfusion, and reduce post-PCI reperfusion injury.

Blood volume feedback adjusts infusion rates to limit fluid overload and underfilling.

One-dimensionally curved molding positions film without strain for precise, leak-tight sealing around catheter parts.

Multimodality circuitry supports ICE, IVUS, and ablation; synchronization improves imaging, while wireless links reduce cable hazards.

A discrete temperature sensor and control circuit correct optical signals for continuous analyte monitoring in thermal gradients.

Depressurized circular molding keeps pliable resin against groove surfaces, limiting deformation and breakage in small multi-lumen tubes.

Collars, irrigation holes, and bridge tubes connect modular ring electrodes into a flexible end effector for cardiac mapping.

Independent filtering of multidimensional motion signals estimates noise before pulse-wave filtering, improving heart-rate accuracy.

A ramping-load test uses SpO2 and pulse rate changes to estimate maximal exercise intensity, reducing physical burden and supervision needs.

Fading disrupts wireless RF coil clocks in MRI; surface electric field communication enables synchronized imaging and vital-sign capture.

Curved mold cavities form catheter film sleeves without stretching, reducing wrinkles and stress for repeatable, tight catheter sealing.

Real-time ACL, impedance, and magnetic sensing measures expandable catheter shape and position to reduce visual estimation errors.

Angled insertion needles position dermal sensors to capture timely analyte data while reducing lag and tissue trauma.

Hyperelastic rubber members provide lasting push-back forces to preserve catheter electrode interference fits during navigation.

Annular, axial, and undulating members define a neutral axis while bend limiters control curvature and prevent overstressing.

A split cylindrical sponge with adhesive pads stabilizes the Foley balloon while absorbing leaked urine around the urethra.

A balloon-integrated cervical catheter measures intrauterine pressure and fetal heart rate while preserving the intact amniotic sac.

Multiple probe nodes measure tissue properties beyond temperature to distinguish actual esophageal changes during cardiac ablation.

This case uses higher-resistance conductors than electrodes to limit unsafe current, reducing redundant components, device size, and cost.

A flexible catheter tip uses dense microelectrodes and conductive traces to maintain cardiac contact during motion.

A stretchy net and elastic bands help prevent IV tubing kinks during arm movement.

A disposable cervical device combines imaging, ultrasound, and Fetal Fibronectin sensing with a smartphone app for timely labor assessment.

A single laser feeds multiple light guides while probe-beam scanning improves multiplexer alignment and optical coupling for lithotripsy.

A double-threaded rod and sliding blocks drive dual continuum segments, simplifying compact surgical tool bending and control.

An inclined receiving surface aligns the energy element with clamped tissue, reducing cauterization variation and thrombus risk.

Transducer-equipped members fit a small catheter sheath, then expand and fan out for accurate cardiac lesion placement.

A flexible core, outer coil, pull wire, and bushing improve deflection, rotation, alignment, and friction during device delivery.

This case uses dynamic gain, filtering, and thresholds to improve analyte accuracy across varied sensor sensitivities.

Time-interleaved transducers combine depth-sensitive imaging with normalized signals for continuous beat-to-beat blood pressure measurement.

This CGM guide needle uses segmented surfaces to expand the incision gradually, reducing skin resistance and insertion pain.

This debrider blade assembly combines a malleable outer blade, flexible inner blade, wrap, and helical coil to limit bending failure.

This cryoprobe uses a gas-permeable shaft wall and vacuum chamber to balance flexibility, insulation, and precise cryoablation.

Nonconductive spacer rings keep catheter electrode spacing precise and reduce lead-wire stress.

Impedance and pressure data reveal esophageal morphology, bolus velocity, and wall stiffness without additional ionizing imaging.

Multiple supply lumens and a return path stabilize coolant delivery during sharp bending for duodenal papilla cryoablation.