Medical Devices TRIZ Cases

Angled gas passages, an insulation chamber, and iris control improve catheter heating uniformity, cut waste heat, and handle multiple diameters.

A foldable mouthpiece cover with spring-assisted opening keeps the inhaler hygienic while preserving quick access and dose counting.

A mechanical counter and lock stop nebulizer rotation after a preset number of sprays, preventing unnoticed overuse of the bottle.

A distal color sensor identifies the installed syringe, enabling accurate sub-microliter dispensing while reducing user error.

An adjustable catheter angle improves vessel alignment to reduce kinking, occlusion, and tip adherence during blood draw and infusion.

An angled shoulder and collar guide the spray tip to the right depth and orientation for accurate nasal tissue targeting with less user error.

Optical sensing in a surgical waste manifold measures blood concentration and fluid volume in real time for faster, more accurate blood loss tracking.

Segmented inflatable chambers help negative-pressure wound therapy conform to irregular surfaces while maintaining safe, controlled pressure.

A cassette holder with bayonet locking moves solid-dose cassettes without direct handling, preserving sterility and reducing loading errors.

Reinforcing ribs and chimney guides stiffen the holder, limiting loaded deflection and keeping medical containers aligned for accurate filling.

A locking part and plunger let the IUS enter the cervical canal without inserting the tube, reducing pain and deployment risk.

A flexible heating region deforms against an unbonded wick to improve aerosol heat transfer while limiting residue buildup and overheating.

A dose wheel and movable dosing element open two medicament cavities together for repeatable dry powder mixing and inhalation delivery.

Negative pressure from sprayed refrigerant draws composition into a cooled spray, improving penetration without separate pumps or compressed air.

A manual suction cartridge with a collapsible tank and disposable drainage path helps prevent wound cross contamination and support faster healing.

Simultaneous dual-pump control enables accurate dialysis fluid exchange at different flow rates without costly high-precision sensors.

Expansion chambers and an air buffer smooth peristaltic dialysis flow, remove bubbles, and improve low-flow accuracy.

Continuous position sensing guides the eye wetting dispenser to the correct distance for consistent liquid delivery despite poor vision or dexterity.

A valve-equipped refill adapter isolates filling and airflow ports to prevent leakage and user exposure during aerosol precursor refilling.

A shape-memory brake drive fits inside a pre-filled cartridge to advance the plunger incrementally while keeping wearable drug delivery compact and precise.

Helical grooves in a deformable hemostatic valve body cut insertion force while preserving reliable sealing during catheter exchanges.

Small affinity particles capture antibodies and leukocytes, while a hydrophilic membrane retains the particles and keeps treated blood flowable and clean.

Combined 40 Hz auditory and visual stimulation induces gamma oscillations and microglial clustering to reduce amyloid load without drug toxicity.

Acoustic sensing captures click and vibration signals to detect dose dialing and dispensing without invasive sensor changes to the drug delivery device.

An angled rotating attachment improves gastrointestinal tissue insertion and drug absorption while reducing moving-part failure in oral delivery.

A non-contact pusher and pre-use switch test prevent false end-of-dose detection in liquid medicine administration sets.

A modular wound trainer uses pumped fluid, haptic response, and thermochromic overlays to simulate realistic treatment conditions and feedback.

A disposable cartridge with membrane pump and check valves separates wetted parts from the actuator to enable precise low-power infusion.

Tangential airflow spins a sealed dose reservoir to open and disperse powder efficiently while reducing contamination and mechanism complexity.

Heated filament arrays create controlled skin micropores, enabling safer and more consistent transdermal delivery of large-molecule drugs.

A longer constant-diameter flow path lowers shear stress and hemolysis risk during blood collection from peripheral IV catheters.

A movable holder, hook, and linear drive simplify chemical-liquid circuit handling while preventing reverse blood flow during refilling.

Multi-pin contact detection identifies cartridge type and applies the right heating profile to avoid mismatched heating and device damage.

A segmented membrane cartridge retains powder during handling, then releases a metered inhaled dose without bulky deagglomeration hardware.

A capillary groove in the atomization cavity absorbs aerosol substrate, cools the cavity wall through endothermic atomization, and reduces leakage.

A sensor-equipped IV hanger tracks bag weight to detect infusion flow deviations in real time, alert caregivers, and help prevent overdelivery.

A wedge-shaped connector support stabilizes the PIVC connector at the insertion angle to prevent rocking and tip displacement.

A bellows pump with one-way valves and motor feedback maintains target negative pressure, cuts energy use, and limits fluid ingress.

Loose inhaler containers advance by contact pressure in a guide wheel, enabling defined dosing, optional mixing, and simpler filling.

Segmented attachment elements let a safety cap hold and remove the medicament shield without tight alignment, simplifying assembly and handling.

Position and acceleration sensing release fill-level readings only when a medical fluid container is stable, reducing errors from tilt, motion, and compression.

Controlled air-volume purging clears instillation fluid from wound therapy conduits while maintaining stable negative pressure at the wound site.

A polymer waveguide and optical cladding deliver bright surgical-site lighting through suction while reducing interface heat and glare.

A movable piston meters powder into pressurized fluid to prevent clogging and deliver consistent hemostatic dosing to deep GI treatment sites.

Pressure profiling during priming detects residual liquid in injector administration lines, helping block unsafe reuse and contamination.

A closed valve flushes cooled dialysis fluid from the fresh lumen into the used lumen so low-volume PD patients receive body-temperature fill.

An L-shaped airflow path with a side-wall air inlet limits condensate buildup, protects electronics, and improves aerosol delivery.

Power-output and heater-resistance sensing between puffs lets the controller adjust heating profiles to avoid dry out and overheating.

Sequential visual objects and rule-based responses raise cognitive load to stimulate the hippocampus and improve memory and spatial perception.

A rotating collar scrubs VAD connectors while mixing colored fluids to confirm adequate disinfection time and technique.

A sleep mask integrates light pipes and an electronics housing to deliver circadian rhythm treatment.

A synchronized sensory therapy system combines visual, auditory, and aromatic stimulation to alleviate stress.

An integrated ink delivery system eliminates manual dipping by using a pump and valve to supply ink continuously, reducing waste and contamination.

A vaporiser substrate integrates microchannels and electrowetting to meter fluid flow for precise aerosol generation.

Segmenting the opening element into a hydrophobic collar and hydrophilic cannula prevents gas bubble formation and dosage variations in aerosol devices.

Sweeping light emitters generate waveforms that distinguish dry and wet tube states, resolving ambient light interference in dialysis systems.

A medical luer lock adapter uses a threaded surface and gripping mechanism to secure attachment to receptacles.

Controller synchronizes vibro-tactile stimulation units with psychological intervention instructions to enhance therapeutic effects.

Segmented articulating cannula reduces force requirements and prevents catheter backout during chronic occlusion crossing.

A nebulizer kit uses a segmented particle sorting route to guide aerosol flow and adjust particle diameter distribution.

LED light arrays coupled to IV tubing display pumping parameters as visual patterns, replacing error-prone manual tape labels with reliable optical signals.

A variable volume chamber creates negative pressure to draw fluid into an inspection window for automated detection.

Self-heating sensor detection prevents thermal element energization during dry tube conditions, ensuring laminar flow safety.

A syringe needle safety system uses a V-shaped notch and cap assembly to separate the needle from the syringe barrel for safe handling.

Mobile microphone detects sound pressure waves from dressings to generate audio signals indicating fluid leaks.

A multifunctional skin patch uses a pre-cooled transparent hydrogel layer to manage pain and cool patient skin during dermatological procedures.

A disposable cartridge houses a pre-installed nebulizer and anti-spill cover to atomize biological liquids without physical contact.

A detachable stimulus applying device uses magnetic attraction to secure electrodes on the body surface.

Interacting air streams from multiple orifices stabilize Rayleigh droplet trains, ensuring constant lung dose despite varying inhalation flow rates.

Wireless sensor assembly detects fluid temperature and pressure changes during transit to prevent patient harm from parameter fluctuations.

Segmented valve design prevents catheter kinking and maintains stable fluid flow, resolving trade-offs between secure attachment and connection ease.

A wearable conductive textile patch integrates sensors and fluid pumps directly into breathable fabric for comfortable body wear.

A pressure sensor measures urine flow to determine catheter removal readiness.

A detachable clamp anchors to gastrointestinal tissue while a mounted sensor detects physiological parameters.

Segmenting the drive head isolates sensitive electronics from shock transfer while relaxing manufacturing tolerances and eliminating pretensions.

Thermoplastic distributors with carbon fillers balance electrical conductivity and device weight for safe, comfortable cosmetic treatment.

Deformable septum and tapered outlets reduce pressure and prevent blood ingress, ensuring catheter patency.

Radial sealing features on the seal member prevent fluid leakage and air aspiration while minimizing friction during device insertion.

Magnetic movable sections in the rotor disengage locking elements to reduce component count and device bulk.

A wearable system uses sensor fusion to detect stress episodes and delivers haptic feedback for immediate user intervention.

A pressure sensor detects fluid flow in implantable pump reservoirs by measuring port chamber changes, resolving monitoring complexity.

A protective cover features a pivotably fastened hood that deforms the needle tip upon raising to prevent reuse.

Differential wall thickness allows radial expansion detection to identify partial occlusions, reducing lag time and device complexity.

Dual lumen needles distribute bioactive agents via side ports and distal openings, reducing injection counts for critical limb ischemia.

A rotating diffuser stand conceals the power cord and displays essential oil bottles for convenient selection.

An integrated rigid insert in a disposable centrifugable container isolates stromal cells, eliminating complex valve systems and reducing device complexity.

A needle hub discharge hole directs excess coating agent away from the adhesive area, preventing capillary infiltration that weakens bond strength.

Processor derives pressure from measured force to detect line occlusions while minimizing false alarms caused by syringe friction variations.

Thick metal rings reduce heat dissipation to improve temperature measurement accuracy during ablation procedures.

Applicator monitors electromagnetic reflection levels to deposit treatment composition only on identified skin discontinuities, reducing irritation.

An integrated blocking element prevents accidental dosing while ensuring reliable metering valve operation during patient inhalation.

A radially movable and pivotable mouthpiece cover rotates a capsule magazine to facilitate easy access.

Resilient tongues in the adaptor generate torque resistance and clicks to prevent under- or over-screwing of medical connectors.