Catheter TRIZ Cases

Anisotropic conductive adhesive joins sensor units to evaluation substrates, ensuring reliable electrical contact despite mechanical movement.

A flexible tissue cutting device uses a sliding element within a distal recess to grip and cut target tissue.

Continuous blood pressure waveform analysis detects pulse abnormalities during free movement, overcoming accuracy loss in dynamic conditions.

Telescopic catheter handle retracts the distal end for compact storage while providing a dedicated interface for connecting collecting bags.

Parallel dual operating lines curve toward each other at the distal end to balance loads and prevent rotation during outward bending in curved vessels.

A grounding path shorts triboelectric charges from peristaltic pump tubing to analog ground, eliminating ECG noise interference.

Integrally molded detents in a tubular wall engage the hub to prevent backward movement, eliminating reexposure risks during disposal.

On-body analyte sensor uses electrical contacts for continuity measurements to verify connection status before glucose monitoring begins.

A composite apparatus merges biosensor and air quality sensor data to generate real-time driver warnings.

Segmented pivot pins with metal reinforcement resolve shear strength versus electrical isolation contradictions in bipolar forceps.

A radially expandable mesh prosthesis with tension coil springs self-expands to seal vascular rents and maintain guidewire access.

A visible light receiver captures cheek reflection via a vehicle rearview mirror to calculate pulse waves.

Segmented durometers with zigzag interfaces reduce buckling in tight bends while maintaining torqueability.

Nested needles extend through deflectable side ports to increase flow capacity for viscous materials while navigating complex vascular structures.

An electrode wound dressing applies electrical fields to disrupt bacterial membranes, reducing infection risk and dressing change frequency.

A cryoablation system adjusts liquid and gaseous refrigerant ratios to precisely control treatment element temperature.

A tiltable insertion unit with a recess portion and locking member secures a bendable medical device held portion during attachment.

Composite resin formulations resolve the contradiction between oil resistance and flexibility, eliminating tube stickiness while maintaining solvent adhesion.

Internal return flow valves prevent pressure buildup and gas leaks during flexible probe operation.

A urine collection system employs a rigid housing to protect a flexible bag from floor damage, preventing leakage and maintaining hygiene.

A subcutaneous glucose monitoring system uses a configurable pre-grace period to allow sensor stabilization before data display begins.

A radiation detector with a rectifier converts errant microwave energy into a detection signal within the abdomen.

A substantially spherical biomedical container design minimizes internal dead zones to ensure homogeneous fluid mixing and sampling.

Short axial filament segments in a braided catheter layer eliminate the zipper effect while maintaining necessary columnar strength.

An applicator assembles a body attachment unit containing a wireless communication chip for continuous blood glucose measurement.

Integrating RF, microwave, and laser sources into one generator reduces thermal damage to surrounding structures while improving tumor control.

Analyte sensor applies fast-transient voltage to polymer gel electrodes to measure conductivity changes.

Segmented sealed chambers prevent wetting fluid migration to the catheter tip, resolving slipperiness issues during insertion.

Assigns dynamic weighting indices to physiological training data based on time intervals between measurements.

Segmented collapsible ablation device fits small apertures while adapting to distorted cavities.

Thermal welding via a catheter creates precise arteriovenous fistulas, reducing operating time and tissue dissection compared to traditional suturing.

An intermediate clamping position reduces blood flow rate for precise volume determination while maintaining agitation to prevent clot formation.

Fluorinated liquid coatings on medical devices prevent thrombosis and biofilm formation.

Local amplifiers convert biopotentials to optical signals, eliminating noise interference from long electrical cables and enabling precise arrhythmia detection.

A spring element uses interlocking features to limit displacement between coaxial rings while permitting elastic movement for contact force sensing.

Self-actuating elastomeric valve prevents fluid backflow and contamination during catheter insertion.

Self-service tracking reconciles local field maps to eliminate motion artifacts from external reference systems.

Portable vital sign monitor computes heart frequency spectrum via FFT analysis, enabling remote telecare and eliminating hospital visits for cardiac assessment.

Shaped pull wire features provide frictional resistance against delivery system sidewalls to secure intravascular implants.

A dual-electrode sensor system isolates analyte signals from non-analyte electroactive compounds using a scaling factor.

Dielectric buffering in a step-down coaxial applicator reduces wavelength elongation caused by tissue dehydration, ensuring predictable ablation geometry.

An internal retention element straightens a shaped medical instrument to prevent engagement with internal organ surfaces during insertion.

Paired pulse voltammetry discriminates analytes using binary waveforms to generate differential signals.

A branched medical connector employs a fluid diverter to flush distal ports, reducing blood accumulation and infection risk in multi-port systems.

An ambulatory medical telemetry device incorporates an audio transducer to provide audible feedback on operational status and patient location.

A catheter with a slit valve opens automatically under bladder pressure to release urine.

Segmenting the endoscope from the resection unit allows independent electrode rotation, reducing cervical damage and avoiding large uterine orifice expansion.

Angular blind channels direct substance delivery via fenestrations, avoiding disc annulus puncture.

Segmented fixture cylinders regulate wire radius direction to resolve trade-offs between manufacturing precision and device complexity.

A sensor device monitors working memory load to identify distracting sensory inputs affecting cognitive performance.