Catheter TRIZ Cases

Constructing dynamic spatial filters from channel information augments EEG signals, resolving noise suppression and feature enhancement trade-offs.

Continuous filaments transform between braid and coil patterns along the catheter length, resolving stiffness trade-offs in tortuous vascular paths.

A conformal elastic cover seals device joints to prevent blood adhesion and infection risks while simplifying cleaning procedures.

Lateral sensor heads shift plug connections perpendicular to insertion, preventing deeper cannula penetration and reducing patient pain.

Elastic pegs on a skin-adhered base mechanically secure catheters, eliminating adhesive residue and removal pain.

A wrist-worn device derives respiratory frequency from hemodynamic signals to calculate training effect parameters.

A urinary output device uses a load cell to measure fluid weight and transmits data wirelessly for continuous patient tracking.

Ultraviolet cross-linking of nitrile-modified polysiloxane eliminates metal catalyst residues and coating detachment in medical catheters.

A microwave ablation catheter incorporates an independent electrical sensing system to enable precise tissue targeting.

A spring-loaded valve mechanism integrated into catheter tubes opens under urine pressure to allow flow and closes immediately when flow ceases.

A drive mechanism adjusts pull wire tension to curve the distal dipole antenna, shifting the ablation zone for precise placement in tortuous airways.

A catheter delivers targeted energy to ablate aortic valve leaflets during transcatheter procedures.

A steerable atherectomy catheter uses a rotating helical cutter to remove plaque from blood vessels.

Magnetic navigation automates catheter movement to map heart ridges, resolving precision and complexity trade-offs for targeted ablation.

Integrated fluid channels in a cryoablation probe sheath deliver heated saline to accelerate thawing and reduce procedure time.

Strain gauge sensor measures cryogen supply vessel weight to prevent procedure interruptions caused by insufficient fluid levels.

A mapping system projects rear-facing electrical signals onto front-facing triangles of a 3D mesh to display accurate electroanatomic data.

Segmented elastomeric disk engages distinct valve seats to eliminate cross-slit precision errors and ensure reliable sealing.

Dealloying creates porous electrode matrices that reduce impedance while maintaining small macroscopic dimensions for precise anatomical access.

Multi-frequency bio-impedance system separates target tissue impedance from surrounding tissues to accurately measure cardiovascular state.

Light transmission through a polymeric catheter shaft inactivates surface microorganisms, eliminating the need for removal during long-term indwelling.

Positioning a far-field electrode on the contraction wire enables subtraction of interference from spline signals to isolate near-field components.

Implantable medical devices adjust detection thresholds based on interdependent physiological signals to monitor heart failure decompensation.

Segmented hydrogel dressing absorbs neobladder effluent while the reusable fastener lowers material costs.

A toolless aseptic disconnector compresses flexible tubing to seal cut ends without external clamping tools.

A medical device delivers low-power RF energy to tissue and monitors reflected signals to measure impedance changes.

Mini-electrodes on catheters enable precise tissue proximity detection, reducing healthy tissue damage during ablation procedures.

A pressure sensor assembly integrates signal conditioning circuitry to generate standardized output signals.

Patient monitoring system identifies fiducial points on photoplethysmograph signals to calculate respiration rate.

A human-state estimating system segments thermal sensation from physiological signals to isolate stress and sleepiness indicators.

Tongue-shaped protrusion pieces engage tube grooves to prevent falling when the elastic sheath body compresses during insertion.

A securement device uses a filament to anchor medical articles without adhesive, relying on compressible material for retention.

A microcirculation assessment device generates optical and thermal data to determine systemic patient responses.

A shieldable needle device uses a flexibly resilient drive mechanism to automatically extend a tip guard over the cannula.

An integrated imaging and aspiration catheter visualizes vessel structures during biological material extraction.

Computes a parametric motion model from electromagnetic sensor data to visualize anatomical structure behavior in real time.

A securement device uses a detachable flap and fabric retaining member to hold medical tubing without adhesive.

A displaceable plug directs initial blood flow into a contaminant containment reservoir to sequester impurities before sample collection.

Demodulate amplitude modulation components from photoplethysmograph signals to extract respiration rate despite complex signal processing requirements.

Rotatable flow control member adjusts effective channel length to prevent vessel collapse during rapid evacuated tube collection.

A finite state machine selects calibration coefficients based on system states and longitudinal sensor inputs to generate accurate analyte readings.

A fistula catheter featuring a flexible guide part and collapsible bumper enables direct insertion without replacement tools.

Multiplexing optical signals from multiple sensing modules reduces device complexity and surgical invasiveness while maintaining measurement precision.

A tourniquet cuff system with a built-in usage register tracks inflation cycles and pressure limits to prevent overuse.

Segmented forearm cuff geometry minimizes subcutaneous adipose tissue interference, resolving measurement errors in obese patients.

Self-expanding memory metal strips capture hard clots without vessel occlusion, reducing embolization risk during retrieval.

Integrating printed power wires inside the cylinder member reduces catheter head complexity and manufacturing difficulty.

A luer lock connector with a ratcheting shroud prevents accidental disconnection of fluid conduits.

Segmented energy pulses shape composite waveforms to generate plasma, reducing light guide damage risk during vascular lesion treatment.