Catheter TRIZ Cases

Combining cut tube and sheet techniques reduces manufacturing time while enabling complex basket geometries for cardiac mapping.

A virtual nephroscope aligns with anatomical pathways in a rendered 3D kidney model.

Bending a catheter tube member displaces the shaft tip away from the esophagus, preventing thermal damage during ablation procedures.

Catheter tip employs a mesh filter and segmented lumens to prevent vessel tissue damage while enabling continuous thrombus removal.

Segmenting adhesive properties into initial and sustained phases extends sensor wear time while minimizing skin trauma during removal.

An ultrasound transceiver inside a urinary catheter captures optoacoustic signals to measure cervical dilation without physical contact.

Processing system generates quality measures for mapping functions to indicate electrode position prediction accuracy within anatomical cavities.

A thermoplastic tie layer anchors to expanded polytetrafluoroethylene tubing outer surfaces for flexible catheter liners.

Helical supply conduits around exhaust lines provide thermal insulation, preventing unintended cooling of proximal tissue sections during surgical procedures.

Inflatable balloon catheter positions radiation detectors within body cavities to minimize exposure to non-diseased tissue during brachytherapy.

Analyzes heart beat rate patterns over time intervals to detect driver drowsiness states.

Segmented anchor devices with curved subcutaneous elements secure catheters through friction, eliminating tissue damage from sutures.

A breathable membrane catheter housing stabilizes IV lines without adhesive tapes, preventing skin irritation and microorganism growth.

Adjustable plates with ratchet mechanisms secure catheters without tape, reducing contaminant accumulation.

A single-lumen blood pressure cuff system corrects sensed pressures using real-time sensor feedback to determine true cuff values.

Flexible outer windings maintain consistent diameters to prevent binding in microcatheters while navigating tortuous vasculature.

A flexible fluid-cooled shaft contains the microwave ablation cable assembly to remove heat along its length during energy delivery.

Dual sliding structural members with limit mechanisms prevent separation, ensuring secure needle coverage without falling off.

Grooves on the outer wall of a nasogastric tube tip break stomach wall seals, ensuring reliable aspirate withdrawal from collapsed stomachs.

Releasable coupling features duckbill valves that seal immediately upon separation, preventing gastric juice leakage and accidental backflow.

A shared interface device powers and communicates with multiple independent analyte sensing devices through a single communication channel.

A single optical fibre bundle delivers therapeutic radiation and collects scattered light for measurement, eliminating mechanical switching complexity.

Flexible valve wall with slit opens under distal flow to allow fluid passage while compressing against a boss to restrict proximal reflux.

A catheter injection moulding method stabilizes the core pin using dedicated members to prevent displacement during high-pressure material flow.

Helical slits limit torsional displacement while the threaded tip plastically deforms stenotic lesions, preventing emboli formation.

Segmenting notification functions into a wearable transceiver eliminates proximity constraints for timely analyte alerts.

A rotary timing valve coordinates catheter delivery across multiple carriages to maintain sanitation while processing over eight animals per minute.

Periodic frequency sweeping and beat frequency detection prevent false locks while maintaining measurement precision.

Patient-specific interlocks deny device operational changes based on sensed physiological data, preventing harmful settings caused by broad operational ranges.

Modular probe segments mechanically couple to catheters, enabling precise steering without increasing shaft diameter.

A transparent securement panel stabilizes catheters while enabling direct visualization of the insertion site.

Non-uniform wall thickness in implantable sensor housings minimizes baseline drift caused by tissue encapsulation forces on flexible diaphragms.

Rotating locking member retracts needle tip within housing to prevent accidental exposure and reduce needle stick injuries.

A urinary catheter cover with friction-enhancing protrusions prevents slippage during cleaning, reducing infection risk from incomplete hygiene.

Segmented spines adapt to irregular cardiac tissue surfaces, resolving the trade-off between high-density signal mapping precision and device complexity.

Segmented filter assemblies and deflectors protect all four cerebral arteries from embolic debris during endovascular procedures.

Implantable sensors determine physiologic property ranges to monitor heart disease progression without repeated calibration.

A skived catheter reduces its distal cross-sectional profile to minimize lumen occupancy during fractional flow reserve assessment.

Skirt anchors wire through encapsulant to prevent fracture and puncture without annealing.

Pulsed vacuum aspiration reduces blood loss during occlusion removal by applying intermittent suction cycles to extract debris while allowing fluid return.

A shunting electrode on a catheter dissipates triboelectric charges via a low resistance path, reducing electrocardiogram noise at high flow rates.

Limiting cyclic dimethylpolysiloxane in silicone rubber to 5000 ppm reduces volume resistivity, enabling precise biosignal measurement.

A lancing device uses a piston and detent system to charge the drive spring by pushing toward the body.

Merging glucose monitoring with lifestyle data logging eliminates manual transcription errors and reduces time spent on retrospective health record entry.

A pulse detector uses body movement signals to identify when the device is removed from a subject.

Implantable magnetoelastic biosensors detect bacterial colonization via resonance frequency shifts.

Segmented distal probe creates parallel continuous lesions, reducing operator skill requirements for atrial fibrillation treatment.

Computer system processes coronary artery centerline data to determine fractional flow reserve values without invasive pressure wires.