Catheter TRIZ Cases

Replacing invasive surgery, the radiofrequency stylus reshapes nasal tissue and nerves to reduce rhinitis side effects.

Integrated pH and EMG sensors on one catheter reduce patient discomfort by eliminating multiple device placement.

A medical device loop tip with embedded wires provides structural stiffness to resist kinking during navigation.

Micro-protrusions on catheter adhering portions increase contact surface area to generate adhesive strength via Van der Waals forces.

Regadenoson selective A2A agonist maintains hyperemia during BOLD MRI to reduce artifacts from adenosine side effects.

Segmented flexible sizing tube uses suction through apertures to drain fluids and create a visible delineation line for resection guidance.

Navigator echoes track breathing and heartbeat to extract MRI data at paused moments, reducing scanning time without stopping the process.

Segmented adhesive dressing protects implanted Huber needles from impact contamination via rigid foam inserts within a transparent bubble enclosure.

A puncture instrument uses a single button to mount, puncture, and dispose needles via depth-dependent locking.

Compressible antiseptic cap releases disinfectant upon application to needleless connectors, reducing contamination risk during storage.

Segmented waterproof barrier with slit and protrusion prevents liquid ingress along catheters, eliminating infection risks from inadequate shower seals.

Rotating coated wire ends mechanically ablate and chemically treat vessel walls, eliminating manual coordination of separate infusion and withdrawal steps.

A transcatheter cutting mechanism severs cardiac valve leaflet tissue to extract obstructing fixation devices.

A coupling device uses a spiral guiding protrusion to automatically orient optical fiber connectors during insertion.

Varying braid pick counts in the catheter shaft resist compressive loading during steering, preventing lateral deflection and maintaining positional accuracy.

Movable holding portions allow adhesive replacement without external force, preventing skin irritation and maintaining accurate glucose measurements.

Multi-needle injection device extends needles through cannula apertures to treat stress urinary incontinence by strengthening pelvic floor muscles.

A portable device calculates fitness scores using spectral analysis of heart rate variability during orthostatic intervention.

A lancing device centers the outlet opening on the base body to simplify user positioning of the lancet tip during blood sampling.

Automated extraction of relevant electrograms from dense intracardiac data resolves information overload while preserving diagnostic accuracy.

A capacitive pressure sensor uses active and dummy cells to measure blood vessel pressure in intraluminal devices.

Processing unit calculates conduction velocities from activation times to identify slow pathways responsible for reentrant arrhythmias.

Medical device stimulates and denervates sensory vagal afferent fibers to reduce bronchoconstriction.

Finned heat exchanger in expandable balloon cryoablation system reduces procedure time by enabling uniform endometrial tissue freezing.

Merges pulse oximeter functionality into a wristwatch to eliminate cumbersome separate devices while maintaining accurate physiological data monitoring.

Replacing optical fluorescence with electrical impedance measurement, the sensor detects biomarkers rapidly without labeling.

Angiogenesis stimulating factors in a porous biosensor matrix recruit capillaries to eliminate diffusion delays and enable real-time analyte detection.

An oximetric coronary sinus catheter uses visible and near-infrared spectroscopy to measure tissue oxygenation levels directly at the measurement site.

Wireless remote controller enables precise catheter manipulation from a shielded location, reducing operator radiation exposure.

Shellac ammonium salt coatings on catheter balloons improve drug release kinetics and therapeutic efficacy by enabling efficient aqueous application.

A sleeve fitted over a delivery needle exterior aligns and protects elongate medical devices, preventing misalignment during insertion.

Segmented layers and a hinge orient the pull tab away from skin, reducing irritation while maintaining reliable tube adhesion.

Stiffener wire applies perpendicular clamping force to prevent PFO flap distortion during occlusion.

Suction ports remove fluid and debris during ablation to reduce thromboembolic risks from microbubble formation.

A pressure modulation system maintains cryogenic fluid near its critical point to ensure continuous flow through small-diameter catheters.

Extension members redirect axial cryogen flow into lateral plumes, addressing low tissue coverage caused by remote apertures and viscous losses.

Segmenting electrophysiological data into discrete time points and locations improves measurement precision for arrhythmia source identification.

An optical measurement device illuminates tissue with structured light to capture reflected signals for vascular health evaluation.

An activation wire varies the loop radius to fit patient anatomy while a tube-shaped constraint prevents nodding deflection of the neck.

Rolling pre-coated polymer strips around mandrels eliminates complex in-situ curing steps and enables mass production of medical devices.

An implantable sensor replaces depleting enzymes with a quantum cascade laser and optical detection to extend monitoring duration.

A coaxial electrosurgical probe generates thermal plasma across a gas flow path to debride biological tissue.

Solenoid valves equalize pressure across blocked breath sampling tubes, preventing liquid ingress that causes frequent maintenance.

A blood lancing device uses a curved cam track to guide the holding device for smooth, single-direction movement.

Applying initiator only to the interior lumen reduces chemical waste while achieving uniform dual-side coating.

A tube equipped electric wire with helically wound conductors simplifies catheter manufacturing by merging components into a single insertable unit.

Acute angle branch passages and raised surface features minimize dead volume and backflow while promoting turbulent mixing of primary and secondary IV liquids.

Interweaving steering wires within the reinforcing braid maintains inner lumen diameter while enabling precise navigation through tortuous vascular paths.

A catheter flow distribution sleeve manages cryogenic fluid dispersion to ensure uniform tissue cooling.