Catheter TRIZ Cases

Thermal winding bonds coated wire around a mandrel to create medical tubing with variable stiffness, avoiding complex extrusion costs.

A modular cartridge design resolves the contradiction between sampling accuracy and device complexity by nesting control components within a replaceable unit.

Electrochemical reactions between dissimilar materials and conductive fluids generate voltage, eliminating internal batteries that cause environmental harm.

A computational framework adjusts boundary conditions using a feedback control system to simulate coronary flow and pressure.

An expandable mesh centering mechanism positions feedpoints radially, reducing collateral damage to the renal artery during denervation.

A helical drive shaft with a counterwound auger blade transports cut tissue proximally during atherectomy procedures.

A medical garment secures catheters via a pocket and low-profile anchor, preventing device dislodgment during patient mobility.

A nested sensor module detects infection via temperature and pH changes, reducing revision surgeries by enabling early diagnosis.

Nested sensor placement resolves shallow insertion discomfort and pullout risk while maintaining reliable analyte monitoring surface area.

A hemodynamic analysis apparatus detects central venous pressure and cardiac output using surface pulse wave sensors.

CVD diamond coatings fill cracks in the emitter housing, reducing stress concentrations and preventing fractures from acoustic pressure.

Segmenting the pressure sensor from the guidewire resolves the trade-off between measurement precision and lesion crossing performance.

Mechanically symmetrical electrodes with asymmetric electrical exposure minimize far-field signal interference and blood dissipation during ablation.

A gallbladder cryoablation device uses a compliant thermal conductive wire to freeze the organ wall.

Counterboring the distal end accommodates a flanged tip to maintain inner diameter for guidewire passage.

Processor analyzes 2D fluoroscopic images alongside auxiliary sensor data to determine catheter orientation.

Segmenting the measurement system into a guide wire sensor and separate infusion catheter resolves variability in absolute coronary blood flow determination.

Pre-marked exchange wires enable catheter swaps using fixed imaging, eliminating live radiography scheduling burdens.

A catheter core wire joint uses asymmetric linear portions to disperse bending forces along the longitudinal axis.

Symmetrical side ports redirect injection flow radially to stabilize the catheter, preventing whiplash effects and endothelium damage during medical imaging.

Fine PTFE powder extrusion resolves the trade-off between wall thickness and mechanical strength.

A signal processing method isolates AC and DC components from photoplethysmography data to extract respiratory effort metrics.

Non-planar spline electrode arrays expand to maintain stable contact with endocardium, resolving trade-offs between mapping precision and device complexity.

A catheter securement device uses a flexible gear rack and ratchet mechanism for adjustable attachment.

A blood lancet device uses adjustable depth settings and linear motion guidance to ensure precise skin penetration.

Positioning and guiding part enables drive roller engagement, resolving manual handling errors and wire damage risks.

An inductive sensing system uses a resonator circuit to detect blood accumulations via electromagnetic signal analysis.

An implantable electrochemical sensor uses an enzyme layer to regenerate silver chloride reference capacity for stable continuous glucose monitoring.

Thin film electrodes deposited on the balloon surface merge mapping and therapy functions into one catheter, resolving size constraints that limit flexibility.

Controller rotates ultrasound probe array to capture multiple images, eliminating manual adjustment time.

Merging steering functions into one coil assembly reduces internal complexity while enabling precise control over lateral deflection angles.

An integrated pull ring marker band combines steering and visualization to reduce device complexity while maintaining tensile strength.

Asymmetrical medical device applies asymmetric clamping force via varying radii, reducing heart block risk while ensuring reliable septal fixation.

Grouping intra-cardiac signals reduces processing complexity while identifying statistically deviant annotations that degrade diagnostic accuracy.

A segmented fixing device constrains swinging medical tubes while maintaining watertight seals against radial loads.

A compact catheter fixation device secures luer-lock connectors using a deformable body and retaining strap for one-handed operation.

Mapping engine processes multi-electrode signals to visualize intracardiac electrical activity at specific depths within cardiac tissue.

Glass peening a stylet surface lowers removal force from 4.89 N to 0.44 N while maintaining stiffness.

A time-of-flight optical measurement system applies weighting functions to physiological-encoded signal profiles.

A unified driving mechanism integrates rotating and delivering functions into a single assembly to reduce slave-end apparatus weight.

Segmented drive core and disposable hub isolate vibration transmission while providing precise lancing depth control.

Segmented block copolymer brushes deliver controlled nitric oxide release to inhibit bacterial adhesion while maintaining blood compatibility.

Thin-walled glass or ceramic enclosures maximize internal volume for larger coil antennas, increasing wireless link distance without expanding implant size.

Continuous EEG analysis estimates injury severity and predicts recovery trajectories to guide clinical care decisions.

Elastic member in hollow cushion block maintains host stability on skin while reducing pressure and sweat accumulation.

Segmented urinary catheter shafts provide distinct flexibility profiles to navigate tortuous urethral pathways without collapsing or buckling.

Segmented catheter sections linked by a predetermined-strength retention string prevent kinking while enabling safe handling and extraction.

Segmenting the main body into reusable hardware and single-use lancets eliminates cross-contamination risks while simplifying user operation.

An expanding mesh braid stabilizes the catheter tip, preventing dislodgment and reflux during lesion crossing.