Catheter TRIZ Cases

Automated OCT lumen detection links vessel geometry to vascular resistance and stent simulation for more accurate coronary lesion assessment.

Automated OCT lumen border detection and vascular resistance ratio modeling improve stent sizing and placement beyond angiography or IVUS.

Controlled PTFE stress-strain behavior enables ultra-thin medical tubes with uniform stretching, flexibility, strength, and dimensional accuracy.

Real-time optical monitoring detects plasma generation and light guide damage in balloon lithotripsy, improving treatment consistency.

Variable spring compression lets a sensor inserter tune insertion speed and force to match skin conditions and reduce trauma.

Controlled paclitaxel nanocrystals on a textured balloon improve coating uniformity, tissue uptake, and release predictability.

A multilayer PCB with guard rings and selective encapsulation blocks moisture and leakage currents to keep glucose sensor readings accurate.

Combining patient-agnostic and patient-specific data, the retrained model improves electrode localization from magnetic and potential signals.

Using tungsten carbide in the catheter tip resin helps preserve flexibility and X-ray contrast by reducing hydrolysis during storage.

A collapsible retention feature encircles the insertion needle to keep the sensor wire coaxially aligned and reduce insertion trauma.

Ablating the left atrial appendage before implant release suppresses contractions that can dislodge the occluder and trigger thrombi.

Incremental square-wave stimulation builds a sensor-specific calibration curve to correct implantable analyte detection drift over time.

Impedance-based bias and current checks detect membrane damage in analyte sensors, improving glucose reading accuracy despite interference.

A Fresnel film with an embedded light absorption medium blocks leakage between emitter and receiver, improving heart rate signal-to-noise ratio.

Area-level pacing and correlation analysis reduce catheter movement and procedure time while pinpointing VT targets with higher spatial resolution.

A cloverleaf basket with sinusoidal members tunes lateral stiffness and limits retraction stress while simplifying electrode alignment.

Distinct optical indicators and excitation wavelengths separate glucose from insulin interference for more accurate continuous monitoring.

An expandable LAA closure framework with an integrated pressure sensor and threaded release improves deployment control while reducing thrombi risk.

An integrated release member, cap, and spring prevent accidental lancet firing while simplifying single-use device assembly.

Wrapped outside a vascular graft, a piezoresistive sensor tracks pressure and flow wirelessly to detect dysfunction without intraluminal placement.

A recessed reference electrode captures far-field noise so tissue-contact sensing electrodes can produce cleaner intracardiac signals for EP mapping.

A deformable isolator with a groove and protrusion improves CGM electronic sealing while keeping the sensor connection area accessible.

Real-time contact scoring and directional guidance help place a wearable blood pressure sensor over an artery for reliable cuffless monitoring.

Segmented fingers and detachable fasteners secure central lines while allowing removal and cleaning without disturbing tube placement.

Selective protective-layer coverage with access holes lowers ESR, preserves signal resolution, and stabilizes compact analyte sensors.

A curling electrode loop applies localized thermal energy outside the renal artery to ablate nerves while limiting arterial and nearby tissue damage.

Biasing rails and magnet arrays help flexible catheters align and coapt against vessel walls for more reliable fistula formation.

Cooperative proximity sensors measure uterine wall thickness and trigger over-insertion alerts for more consistent robotic uterus positioning.

Radial undercut edge features create interlocking catheter bonds that resist bending, twisting, and delamination without costly surface processing.

A pressure-retracted shroud and biasing element simplify sensor insertion while cutting inserter bulk, assembly effort, and cost.

A telescoping inserter and adhesive base improve transcutaneous sensor placement while reducing pain and delays in glucose monitoring.

A spiral multi-electrode catheter maps electrical activity and ablates heart chamber tissue in one insertion, cutting procedure time.

A dot-point tip followed by gradual width and thickness expansion cuts skin with less resistance, reducing pain during glucose sensor insertion.

Separate blood-draw and infusion pathways let the extension set stay primed while reducing contamination and residual blood risk.

A saline-flush blood return path avoids reservoir thrombus and pulse damping while reducing blood loss during arterial sampling.

A probe beam scans fiber ends to time and align a shared laser through a multiplexer, improving coupling precision while avoiding one laser per guide.

An annular insulating barrier routes signals to the substrate backside, preserving microneedle penetration and reliable biosensor contact.

Vacuum outer-surface molding keeps extruded multi-lumen tubes circular while preserving conduit shape and preventing resin breakage.

Two-range eddy current sensing improves vascular stenosis positioning while enabling portable, wearable monitoring without complex ultrasound.

Focused millimeter-wave beamforming improves non-contact heartbeat sensing by strengthening weak reflected chest signals for accurate monitoring.

A storage-responsive mechanical lockout blocks sensor insertion after heat or humidity exposure, preventing drift and underestimation.

Square-wave stimulation maps sensor current response to verify and recalibrate implantable analyte sensors as passivation and enzyme activity change.

A resonant pressure sensor at the catheter tip removes manometer-line bubbles and blockages while enabling self-calibrated dynamic measurements.

Multi-wavelength light sensing reaches over 1 cm into lung tissue to assess pulmonary oxygenation more accurately than shallow peripheral monitoring.

A built-in lid slot and guide wing keep catheter package leaflets secure after box closure while enabling country-specific insertion.

Redundant electrode groups operating at different frequencies maintain analyte detection when signal distortion or early electrode failure occurs.

Varying coil ribbon width and bond density creates region-specific bending stiffness for easier insertion, better control, and less damage risk.

A fluid-filled lumen and optimized electrode layout help an implantable glucose sensor maintain signal quality and reduce enzyme decay over long-term use.

Microneedles, selectable sensing units, and onboard reagents enable low-pain biomarker monitoring from small physiological samples over time.

A control circuit uses donor parameters to set a safe target plasma volume, increasing collection yield within FDA-guided limits.