Catheter TRIZ Cases

A lumen-bearing mechanical barrier protects a flexible medical probe tube from anchor forces while preserving distal-tip deflection.

A foldable support tube uses aligned rollers and guide holes to prevent catheter deflection and simplify sterile preparation.

Sequential pressure measurements and thresholded windows improve consistent stenosis localization along vessel pressure ratio curves.

A continuous glucose sensor records data and triggers alarms while single-point checks preserve confirmation without constant display.

Tissue proximity and impedance guide electrode selection and signal averaging for reliable far-field IEGM measurement in planar catheters.

An integrated pump, valve, sensors, and controller clear air locks while tracking urine output and renal-risk indicators in real time.

OCT self-inspection detects catheter connection faults and image degradation.

This case extracts wearable PPG features and compares age-group baselines to assess cardiovascular health relative to chronological age.

This case combines ECG and impedance sensing in a neck-worn sensor for continuous, non-invasive monitoring of heart failure.

This case shows how discrete clip positions stabilize cannulas during subject movement and help reduce bleeding risk at the wound site.

A flexible housing collapses as a probe advances, reducing buckling and drag while clearing catheter occlusions for blood draws.

A crosslinked enzyme network helps continuous glucose sensors retain sensitivity after EtO sterilization and extends useful life.

Dual tubular reinforcing layers with resin-filled spacing reinforce the operation wire in a catheter, resolving slidability and strength trade-offs.

Merges the sensor and sharp needle introducer into one unit to eliminate separate handling safety hazards while ensuring accurate positioning.

A slot antenna transmits biometric data from an ingestible sensor, resolving heat and power constraints that limit conventional designs.

Electrochemical impedance spectroscopy reduces three-hour stabilization times by measuring electrode interface properties during initialization.

Segmented catheter arms use varied stiffness to control electrode positioning and prevent undesirable inversion during cardiac mapping.

A wireless physiology monitor transmits modulated radio frequency signals to measure heart and lung functions via Doppler effect analysis.

Cuff-like device extracts interstitial fluid via microneedles and detects biomarkers using aptamer-based quartz crystal microbalances.

Tapered guide surface prevents guide wire snagging in tortuous vasculature by providing a continuous path through the manifold assembly.

A cylindrical blood collection unit integrates a removable test tube to capture and discard initial needle-insertion fluid.

An integrated catheter management system uses radiopaque positional shift indicators and antimicrobial adhesives to eliminate repeated radiographic imaging.

A single-wire sensor device uses a buffer to store time-series data and programmable memory for identifiers.

Ablation catheter with elastically retractable spline basket and bendable electrodes conforming to tissue surfaces.

A movable second driving mechanism on the frame reduces overall size and weight of the interventional surgical robot slave device.

Segmented flexible shell prevents environmental contamination by retaining radioactive discharge during radioembolization procedures.

An electroactive polymer actuator imparts controlled motion to an optical fiber within a compact ophthalmic imaging probe.

A blood collection set uses a housing that moves from proximal to distal position to create a fluid path through the catheter connector.

A multilayer catheter tube element with a polyamide outer layer enables reliable balloon welding while preventing delamination.

Segmented bellows in a flexible multi-tubular cryoprobe resolve the contradiction between structural strength and flexibility for precise cardiac ablation.

A medical positioning system tracks device location using a pre-acquired lumen roadmap.

Segmenting the stabilizer prevents rocking movement while local openings maintain access to the feeding port.

A compression therapy system uses a photoplethysmographic sensor to measure venous refill time for direct efficacy assessment.

Cadmium-free quantum dots enable in vivo monitoring of neuroimmune neuropathies by measuring matrix metalloproteinase activity without toxic effects.

A tether links the lancet carrier to a positioning tab, enabling adjustable penetration depth within the lancing device housing.

A flexible spine with polymeric cover and adjustable filler material compensates for structural changes along its length.

An insulating layer on the convex side blocks anterior energy conduction while a cooling lumen protects surrounding tissue from thermal damage.

Adjusts sensor sensitivity through feedback loops comparing reference values, reducing biological response errors during continuous monitoring.

Fluorescent indicator tags in an implantable device enable continuous analyte monitoring, reducing reliance on intermittent manual measurements.

Independent inner liner and outer layer enable coaxial movement in a flexible sheath, reducing kinking in tortuous anatomy.

A magnetically-guided catheter uses an isolated manifold and conductive capsule to protect the positioning magnet.

A concentration determining device measures brain blood flow volume against a varying threshold to identify user focus states.

Nested inserts with protrusions house sensors inside the electrode shell, reducing irrigation fluid interference for accurate tissue temperature sensing.

A modular skin-mountable drug delivery system uses a retractable transcutaneous device to enable precise insulin infusion via secure coupling.

An integrated blood collection system merges the collection tube with the analysis device to eliminate manual transfer steps and reduce exposure risk.

A longitudinal separation between the sensor and lumen prevents vessel wall contact, reducing deformation offsets during navigation.

Thermocouples distal to a cryoballoon record temperature changes from cold saline injection to assess pulmonary vein occlusion, reducing radiation exposure.

Porous plastic cap absorbs and releases antiseptic fluid upon compression, eliminating manual swabbing errors and contamination risks.

Radio frequency transmission eliminates physical electrical connections between the sensor and monitor, resolving defibrillation safety risks.