Medical Devices TRIZ Cases

Temperature-compensated pressure sensing improves APD fluid monitoring accuracy after flexible-sheet preconditioning, while reducing noise and sealing issues.

A magnetic field inside the catheter bends a pencil electron beam toward internal lesions, reducing scattering, absorption, and excess tissue exposure.

A movable air adjusting piece varies inlet opening area, enabling stepless suction resistance control without losing automatic activation.

A handheld disposable aspiration pump uses dual chambers and flow feedback to keep vacuum steady, cut cost, and help prevent vessel collapse.

Electrodes on a hollow cannula combine glucose sensing and medication delivery through one insertion site, reducing discomfort and device complexity.

A front cap removal and two-direction rear cap motion let this discrete female catheter deploy quickly with less effort in emergencies.

A twist-driven cap converts rotation into linear piercing motion, preventing accidental activation and enabling complete skin prep dispensing.

Sensors detect pooled and mixed fluid states in drainage tubing, then adjust air pressure to clear loops and reduce CAUTI risk.

Rotational sensing of the stop wheel and sleeve gives injection pens clear dose and mode feedback while preserving simple self-use.

Photolithography-defined aperture plates improve sub-10 μm size control, yield, and droplet consistency in liquid nebulizers.

An occipital hoop and temporal connectors stabilize a head-mounted display while spreading force away from sensitive facial regions.

Detachable pump, spray, and control modules let the diffuser replace worn air pumps separately, cutting maintenance cost and extending service life.

An air-chamber applicator uses an inverting flexible membrane to handle varied medication forms with one hand and reduce messy cream clumps.

Extracentric piercing needles form larger triangular capsule openings to reduce blockage, support high powder doses, and stabilize airflow.

Magnetically actuated unit cells switch between contracted and extended states to improve microrobot motion and drug delivery in confined tissue spaces.

Localized heating joins catheter electrodes to spiral flexible conductors, reducing assembly complexity, diameter growth, and thermal stress.

A branch-point opening and closing valve with unidirectional flow control prevents reverse blood flow during refilling in chemical liquid circuits.

Real-time biomarker sensing and AI-guided dosing help a wearable pump maintain stable hormone levels and reduce bolus-related side effects.

A hydrolysis inhibitor protects tungsten-filled catheter tip resin during long-term storage, preserving integrity and X-ray visibility.

Wireless patient feedback lets a peritoneal dialysis pump adjust drain suction pressure in real time to reduce pain while maintaining fluid removal.

A rotating inner housing aligns flow paths and shows open channels through windows, reducing bulk, errors, and failure points in fluid delivery.

Deep suction pulses raise clot aspiration flow, then quickly drop to low flow to limit blood loss during thrombectomy.

Conductive ink and embedded electrodes in a prosthetic liner stimulate residual limb nerves to relieve phantom limb pain without drug side effects.

Integrated reservoir lighting improves air bubble visibility and shows injector status through color or brightness cues.

A rounded tip with a defined curvature ratio helps the implantable chamber pass through a small incision while reducing skin and subcutaneous trauma.

A piezoelectric vibrating mesh turns liquid into heat-free aerosol, avoiding toxic byproducts while improving deep lung delivery.

Stored consumable data and device communication control activation, heating time, temperature, and usage to block unsafe vapour operation.

Adjustable nozzle-to-electrode spacing lets one inhaler fit different formulations while maintaining particle size and spray distribution.

A lithium layer absorbs radiation-generated hydrogen in metallic substrates, reducing blistering and deformation in fusion and medical use.

Tangential airflow drives orbital reservoir motion to empty dry powder more completely, improving dose delivery and lung penetration.

A V-shaped inhaler enables both nasal and oral vapor delivery using passive evaporation, avoiding batteries and heating elements.

Pressure sensors characterize pump leakage versus pressure difference, enabling flow correction without internal seals to preserve accuracy and pump life.

A 3D cylinder microrobot packs and delivers supercritical water at micro-scale while handling the pressure and temperature needed to break down PFAS.

Environmental sensors and processor-controlled SMA plungers keep wearable insulin dosing accurate despite temperature, pressure, and humidity changes.

Real-time flowrate-based negative pressure control reduces peritoneal dialysis drain pain while maintaining efficient effluent removal.

A stabilizer and multi-lumen tubing enable single-entry subretinal injection with precise flow and volume control while reducing retinal tearing.

Shared carrier indexing and airflow collection simplify dry powder inhalers while improving dose alignment tolerance and tracking.

Recycling larger droplets back to the reservoir lets this jet nebulizer deliver small drug volumes with less waste and more respirable aerosol.

A paired movement-control grip advances a lubricated urinary catheter without direct contact, improving sterile handling for users with limited dexterity.

A propellant chamber and actuator replace manual force to deliver nasal drugs more completely and consistently for users with limited dexterity.

Tangential blister inlets create cyclonic airflow that deagglomerates powder, improves API lung delivery, and retains carrier particles.

Combines inhalation dosing, peak flow measurement, and wireless data transfer to improve compliance tracking and personalized respiratory care.

A reusable-disposable pump housing with releasable engagement and switch control improves wearable infusion reliability, comfort, and cost.

ABC294640 inhibits SK2 to reduce coronavirus viral load while modulating replication and inflammatory responses in oral formulations.

A porous sheath cushions basket catheter electrodes to prevent tissue indentation while still conducting RF energy and irrigation during ablation.

A helical member, braid, and soft strain relief layer help a catheter sheath resist axial compression while staying flexible in tortuous vasculature.

Automatic puff counting and session timing end heat-not-burn use at set thresholds to curb overuse, save energy, and provide feedback.

An elastic cervical support ring resists dilatation, measures contraction forces, and can release drugs to delay pre-term labor.

Periodic RF or ultrasonic tissue monitoring detects extravasation early while adjustable reporting rates reduce power use and extend wearable service life.

A layered flexible catheter tip improves contact on contoured cardiac tissue, supporting more precise mapping and lesion formation.