Catheter TRIZ Cases

EIS measures membrane resistance across redundant glucose electrodes to weight fused readings and reduce finger-stick calibration.

Automated OCT lumen-border detection measures vessel area and morphology to address projection errors in stenosis assessment and stent planning.

A threaded knob, integrated ratchet teeth, and tensioned steering wires retain bent catheter positions for navigation through tortuous anatomy.

Pre-hydrating the sensor and applying pulsed bias shortens membrane and electrochemical break-in, enabling earlier accurate analyte readings.

Catheter pistoning and lateral motion can cause trauma and infection; a patch-and-garment assembly stabilizes tubing with cushioned support.

EIS measures electrode impedance for glucose sensor diagnostics, calibration, interferent detection, and electrode characterization.

Axial insertion and rotation secure a removable transmitter to the skin-mounted sensor, improving stability and simplifying glucose monitoring.

Combining piezoresistive pressure and thermistor sensing in one catheter tip enables dual measurement without enlarging the catheter.

Magnetic electrodes, flexible signal paths, and wireless transmission make continuous ECG and SpO2 monitoring more comfortable for mobile patients.

Writable non-volatile memory revises or supplements ROM-based RF command software, avoiding costly semiconductor redesigns for analyte monitoring systems.

A torsional spring offsets snap energy in bi-stable concentric tubes, helping a robotic catheter maintain pseudo-constant contact with beating-heart tissue.

Piezoelectric sensors detect arterial pulsation and guide the needle to a precise penetration point, reducing repeat punctures and patient discomfort.

Shorter emission from the second light source reduces timing differences between detection values used for SpO2 calculation.

Dynamic bias voltage uses EIS or conductivity changes to detect insulin interference and preserve accurate glucose sensing.

PPG waveform features are compared with age-group baselines to estimate cardiovascular health relative to chronological age.

A time-dependent hard-to-soft profile helps place and localize in vivo analyte sensors while reducing tissue trauma, discomfort, and irritation.

Automated catheter connection checks help OCT imaging engines detect optical faults and improve image quality without routine technician service.

Insertion-related signal attenuation can destabilize glucose readings; time-varying offset calibration supports continuous analyte monitoring.

Antimicrobial agents in a polymer membrane help limit biofilm formation and preserve analyte sensor function during long-term wear.

A peel-off component linked to the bottom cover removes the adhesive release layer during sensor implantation, shortening setup and simplifying assembly.

Microcapsules in the hydrophilic coating release antimicrobial agents under irradiation or pH change to limit infection during catheter use.

A patient interface shows CGM warm-up progress, glucose trends, and alerts while cloud sharing helps families interpret glucose variations.

Limited access to ablation-catheter controls is addressed with a circumferential slider knob, axial spline adjustment, and integrated locking.

A helical lumen, Joule-Thomson nozzle, and heat transfer body address insufficient cooling capacity across intravascular cryotherapy areas.

Segmented coupling lets the transmitter detach quickly for biosensor replacement while maintaining secure mounting and limiting fluid ingress.

A fetal sensor unit combines pH, oxygen saturation, and heart-rate data with reference measurements to reduce unreliable heart-rate-only decisions.

Separate electrode fabrication and bonded stacking avoid complex wafer-scale integration for multi-analyte sensors, reducing cost and contamination.

Spatial-pattern illumination and focus-plane variation enable handheld 3D surface registration without moving relative to the object.

A trained autoencoder removes noise from catheter and body-surface cardiac signals, improving quality for analysis, mapping, and ablation.

Insulin injections can weaken glucose sensor signals; EIS or conductivity readings guide bias-voltage changes to limit interference.

See how a fixing hook, perimeter recess, and elastic plunger stabilize coupling and decoupling between a glucose sensor applicator and body-attachable unit.

Interlaced filar arrays combine braid flexibility with structural support to limit catheter kinking during vascular navigation.

A thermally conductive liner fills the gap around the ablation element, improving heat transfer for continuous lesion formation.

An integrated lancet, sensor, and power supply enables at-home physiological sampling with biometric verification and sample storage.

An indexed actuator advances a midline catheter over a fixed introducer needle, enabling one-handed placement while preserving ultrasound visualization.

A sliding frontal attachment aligns the needle with a full-length cavity, while a spring retracts it to limit sticks and leakage.

Sliding frame members help a catheter loop conform to non-planar cardiac tissue while maintaining stable electrode contact.

Temperature variations can skew tissue-fluid glucose readings; core and skin temperatures calibrate sensor output for more accurate monitoring.

A hydrophobic-hydrophilic polymer substrate self-folds after solvent exposure, easing implantation and stabilizing tissue contact.

Reflux sensors detect gastric events, pause enteral feeding, and redirect contents to an external reservoir to limit aspiration risk.

An undulated distal skeleton balances flexibility and stiffness so catheters can pass bifurcations, tortuous pathways, and stenoses.

Non-flush OCT pullback locates the guide catheter, so contrast flushing is limited to the calculated luminal-clearance range.

Perforations create localized stretch zones while support material limits overextension, helping secure variable-size devices without peeling.

A curved flexible support keeps an adhesive sensor patch perpendicular in the inserter, preventing sagging before deployment.

An expandable filter membrane isolates the brachiocephalic, carotid, and subclavian arteries from embolic debris through one access point.

RF and microwave energy in one jawed resector address fatty-tissue cutting limits while supporting coagulation and ablation.

A flat flex circuit around the distal core wire maintains sensor connectivity while reducing manufacturing damage and improving torque response.

Infrared light passes through a supported wrist to visualize the radial artery, enabling accurate remote TCM palpation.

Manual lumen tracing limits speed and vascular resistance accuracy; automated OCT analysis measures borders and simulates stent placement.

Independent balloon lobes adapt cryoablation coverage to varied pulmonary vein shapes, reducing reliance on additional focal or RF ablation.