Catheter TRIZ Cases

Electrostatically trapping bacteria in hydrophilic urinary catheter coatings helps block urethral migration and lower infection risk over time.

Overlapping inner liner segments slide during bending, cutting catheter shaft stiffness while preserving kink resistance and delivery ease.

A translation-handle extension set advances a protected probe through a catheter for needle-free blood draw while maintaining a closed fluid path.

A segmented base and resealable cover keep catheter sites sealed against pull-off and bacteria while allowing quick line access.

Integrated pressure, temperature, and signal chips on an FPC probe improve intracranial monitoring accuracy while enabling stable digital wireless transmission.

Time-segmented heart-rate and variability analysis improves state determination despite circadian, sleep, and medication effects.

Controlled wetting tension and stress-strain balance let thin PTFE tubes keep strength, elongation, and dimensional accuracy for medical liners.

Monitor electrodes track chemistry-stack changes from sterilization, shipping, and storage to recalibrate working electrodes for accurate glucose readings.

Real-time sensor, visual, and audio feedback helps clinicians correct catheter placement errors during vein access training.

A phase-separated resin matrix improves near-infrared pigment dispersion and emission efficiency while keeping molded objects easier to produce.

A metal woven mesh heats the catheter wall to keep its outer surface in a safe range while preserving the cryoablation effect.

Nested loop and spine members maintain electrode spacing during collapse and expansion, reducing deformation in cardiac mapping and ablation.

Transitionable spline electrode assemblies enable one cardiac catheter to map signals and perform selective electroporation ablation with less healthy tissue damage.

Multiple small needles replace a thick needle to collect capillary or venous blood with less pain while maintaining effective sample extraction.

Multi-beat Pa/Pd analysis combines diastolic and whole-heartbeat pressure ratios to improve vascular assessment without hyperemia.

Optical chemical sensors track analyte responses to medication and enable dose, timing, or drug changes before harmful imbalances occur.

Personalized creatinine sensor calibration improves non-invasive GFR estimation accuracy while enabling real-time kidney function monitoring.

Simultaneous RF and microwave waveforms improve tissue cutting while strengthening coagulation to control bleeding during endoscopic surgery.

A buckle-release slider and elastic module simplify skin-mounted analyte sensor insertion while improving reliability and lowering structure complexity.

An air-tight probe-cuvette coupling removes air pockets and stabilizes sensor alignment for more reliable blood parameter monitoring.

Continuous skin alcohol sensing combines motion, temperature, and remote feedback to improve tamper-resistant monitoring accuracy.

Reel-to-reel shaft integration and selective material removal smooth catheter transitions, improving flexibility, pushability, and steering response.

Mechanical braid joining between proximal and distal catheter shafts creates a smoother stiffness transition for better maneuverability and positioning.

Multiple enzyme-responsive electrodes and transport-limiting membranes enable continuous in vivo potassium monitoring with stable biocompatible sensing.

Flexible epidermal patches combine thermal actuators and sensors to measure tissue heat transport while maintaining conformal contact and low tissue impact.

A built-in wicking element removes the contaminated first blood drop, enabling cleaner glucose samples and more reliable insulin dosing.

Automatic start-end signal capture and pulse transit averaging simplify hemodynamic change checks during treatment.

A fluid-expanded soft sensor array conforms to atrial walls for more complete cardiac mapping without obstructing blood flow.

A flexible tether limits applicator movement at the probe tip, preserving ablation zone placement and microwave energy delivery in tortuous anatomy.

A guided recess and stop element secure the catheter tip and tube, preventing kinking and unintended withdrawal while adapting length.

Internal vacuum transfer and passive stabilizer mixing enable precise blood micro-sample dispensing while reducing exposure risk and excess collection.

A base-leg and coupling-protrusion layout simplifies skin attachment and sensor-transmitter coupling in a transcutaneous sensing applicator.

A separate over-patch and segmented release sheets keep CGM tape small while strengthening skin adhesion and simplifying placement.

Extended anchor wings, anti-rotation features, and a clasped release liner stabilize catheters without blocking access or visibility.

EIS tracks agent elution at the working electrode so glucose readings can be corrected as corrosion and deposits degrade sensor accuracy.

Real-time bedside PCI visualization combines pressure-wire data and lesion close-ups to assess stenosis and compare treatment options without adenosine.

A deformable catheter tip expands at the target site and uses shape-activated valves to improve tissue contact, lesion consistency, and cooling.

Twisted three- or four-wire resistive sensors enable accurate multi-point organ temperature monitoring while limiting catheter size, tissue damage, and infection risk.

A slide block divider separates deflection wires in the handle, preventing cross-wire interference and enabling smoother single-hand steering.

Secondary signals such as lactate or heart rate help detect glucose dropouts, reduce false alarms, and correct sensor readings.

A poor-solvent diffusion and film-rolling route forms room-temperature polymer tubes with uniform thickness and stable mechanics for artificial vessels.

A handheld multi-lumen controller lets one clinician guide needle and catheter placement while injecting or aspirating fluid with precise control.

A split biosensor reuses the main body while a disposable sensing unit and needle protector cut waste and help prevent test line contamination.

A hollow body with internal supports holds catheters in an extended, protected position while cutting sterilizable packaging volume.

Narrow inlet and outlet openings secure a catheter valve or sample port to limit jostling, twisting, and kinking that cause discomfort.

Helical pull-wire routing in the non-deflectable sheath section reduces stored energy, preventing wire breakage and whipping during torque.

Sparse cardiac point clouds are converted into accurate surface models by using machine-learned signed distance fields to fill gaps and cut reconstruction time.

A lancet patch uses negative pressure, fluid pathways, and onboard processing to collect small physiological samples with less discomfort and better detection.

A counterflow heat exchanger in the flexible return line pre-cools cryogen, enabling lower tip temperatures with a smaller, easier-to-manipulate cryoprobe.

Remote drive inputs deflect and feed a robotic surgical instrument, easing awkward arm motion while preserving precise control.