Medical Devices TRIZ Cases

A collapsible urinary storage unit uses layered porous and absorbent materials to collect fluid during flight.

Control unit derives internal resistance from open and closed circuit voltages to quickly determine battery deterioration without prolonged tracking.

Segmented heating coils prevent toxic metal contact while visual indicators track remaining substance levels for controlled vaporization.

Segmented primary and secondary IV sets with color-coded markings resolve entanglement risks while maintaining hemodynamic stability.

A movable ring adjusts seal pressure within a vascular catheter handle assembly, preventing back bleeding and leakage while maintaining operational flexibility.

A testing device measures particle generation from catheter lubricating layers using a holding groove that deforms the tube during insertion simulation.

Merging filtration steps into one unit minimizes cumulative volume loss while maintaining strict compliance with legal processing time limits.

Segmented annular fittings and anti-rotation grooves simplify assembly while ensuring reliable connection.

A bioelectric stimulation system modulates blood pressure through closed feedback loops targeting the vagal nerve.

Conductive surfaces activate the device while a microprocessor logs usage data, resolving the trade-off between smoking simulation and system complexity.

A tubular element within an inhaler actuator creates a low-velocity zone to manage aerosol flow dynamics.

Porous wicking moves liquid to a separable heater surface, preventing direct contact that degrades the element and builds toxicant residues.

High conductivity thermal bridges warm refrigerated medicaments, reducing injection pain while maintaining storage stability.

An irreversible limiter in a medical flow regulator prevents patients from resetting the mechanism to maximum flow, ensuring safe administration.

A reusable male external catheter uses a vacuum device and check valve to actively evacuate urine into a collection chamber.

Specific wave patterns actuate functionalized nanoparticles attached to cancer cells, inducing lysis while sparing healthy tissue.

Adjustable perforated substrate accommodates body contours, preventing dislodgement and leaks during movement.

A porous biodegradable biomaterial component adapts to variable left atrial appendage geometries while preventing clot exit through selective flow control.

Processor auto-populates bolus calculators with validated continuous glucose monitor readings.

A catheter Y-fitting assembly uses a side feed to pull filamentary material through an inner cannula at high velocity.

Infusion devices transmit pre-delivery signals through shared fluid paths to detect concurrent connections.

A medicament dispenser advances multiple carriers via a cover cam mechanism for single-handed operation.

A nasal powder delivery device uses an integral air piston to compress gas for dose dispensing.

An overlapping second sheet reduces the size of a slit opening in a first adhesive layer to maintain peripheral integrity and prevent infection.

A rotary valve member guides drug fluids through a single passageway to an outlet.

Administering green light between 510 and 550 nm reduces sleep latency and anxiety by targeting specific photoreceptor responses.

Passive elastomeric pump indicators signal fluid volume changes through color shifts on the expanding outer layer.

A therapy device converts recorded cat purr signals into therapeutic vibrations using a sound transducer.

A syringe adapter uses a lever and pin mechanism to encode parameters for power injectors.

Bypass flow path isolates reference sample from sorbent regeneration to resolve unpredictable pH levels.

An elongated rigid reservoir enables high-dose delivery by slowing powder release, reducing particle concentration, and minimizing agglomeration.

A monolithic planar locking member with an integrated one-way valve advances a catheter tube in a single direction.

A movable connector adjusts between positions to prevent mischanneling while reducing component costs.

Nested catheters with hypotube structures and hydrophilic coatings reduce friction, enabling faster occlusion removal in tortuous internal carotid arteries.

A two-part locking component compresses a catheter proximal end against a medical device stem, preventing lumen wall damage from sharp engagement barbs.

Automated blink detection aligns the device to dispense accurate doses without eyelid contact or makeup damage.

Segmented protective covers eliminate recapping hazards, while longitudinal ribs provide audible feedback for secure engagement.

A home medical apparatus selects explanation modes based on patient proficiency levels to display tailored operation windows.

A phthalate-free thermoplastic elastomer cannula resists kinking through inherent material elasticity and tapered structural geometry.

A cassette design with a laterally spaced in-line occluder and thumb tab allows manual bypass using natural hand pressure.

A fluid waste canister uses a domed bottom to create compressive interior stresses under vacuum.

A wearable eyeglass device uses a photoplethysmography sensor to monitor heart rate and deliver anticholinergic medication via the conjunctiva.

A control circuit displays real-time nerve block injection pressure values alongside categorical ranges to guide needle placement.

An upwardly directed outlet opening guides aerosol away from the tongue and palate to increase lung deposition.

Obstructed air inlet creates turbulence in the aerosol generator housing to prevent droplet coalescence and reduce mouth deposition without propellants.

An electric motor drives a wound spring metal strip to unwind against a piston, handling viscous fluids and large volumes without complex mechanical linkages.

A synchrocyclotron adjusts superconducting coil current to generate variable magnetic fields for particle acceleration.

Manipulation evaluation unit differentiates activation from dose setting to optimize power consumption and extend operational life.

An offset radial septum diverts primary liquid flow into a swirling motion, preventing secondary liquid stagnation in the elastic element cavity.

A peristaltic pump system uses dynamic pressure monitoring to detect fluid reflux within a catheter during injection cycles.