Medical Devices TRIZ Cases

A porous body with an embedded heater is clamped between holders to simplify atomizer assembly while reducing heat loss and dry burning.

A friction-fit insert anchors the catheter shaft to the hub without adhesives or injection molding, reducing leaks and assembly variability.

Porous carbon and mesh layers localize vaginal odor adsorption and therapeutic delivery while helping preserve pH, microbiota, and mucosal health.

A port near the mouthpiece opening uses capillary action and needle motion to pull excess tattoo ink off the outer wall and back inside.

Pre-pressurizing the second fluid before phase change helps a multi-phase injector reach the target mixing ratio faster and avoid image-degrading dose errors.

A pressure-sealing cap blocks open luer lumens while disinfecting needleless connectors, helping prevent disinfectant ingress and maintain line pressure.

Ultrasonic atomization, capillary liquid feed, and sealed conduits prevent leakage, burnt inhalation, and inconsistent therapeutic dosing.

Separate excitation pads and voltage sensors measure tissue impedance in real time while reducing circuit distortion during wound monitoring.

Focused ultrasound opens the blood-brain barrier to localize radiosensitizers and radioprotectants for selective neuromodulation near critical structures.

Bent airflow passages and a cyclone cartridge structure limit inhaler leakage while breaking up coagulated particles for smoother delivery.

Ultrasonic atomization, capillary liquid transfer, and magnetic attachment reduce leakage, simplify inhaler construction, and enable easy container replacement.

Electrode and resistor sensing in an NPWT canister detects fluid level while isolating logic circuitry to limit leakage current and improve safety.

A coaxial probe pairs tumor lysis with same-site intratumoral infusion to boost immune response while reducing systemic toxicity.

Ultrasonic atomisation with capillary liquid transfer and sealed replaceable containers prevents hookah leakage without hurting airflow.

Load-cell feedback and staged water purification keep in-line dialysis fluid within target composition and divert impure mixtures.

A sterile container lets a compressible heart pump be tested, rinsed, and transferred through a restricted opening without direct contact.

A wearable infusion setup inserts a cannula and glucose sensor together, cutting separate needle steps, pain, and installation time.

A movable suction-port cover lets clinicians fine-tune vacuum pressure one-handed during lumen suction or irrigation without complex controls.

Automated PIC dosing uses input parameters and fluid control to speed blood product pathogen inactivation without sacrificing dose accuracy.

Conductivity feedback adjusts concentrate and water in real time, enabling patient-specific peritoneal dialysis fluid at the point of care.

A cam-actuated cartridge pump uses flexible membranes, synchronized valves, and pressure sensing to deliver small fluid doses accurately.

Repeated piezoelectric deformation tracks internal rotation to automatically measure and record delivered medication dose during injection.

Separate drug, gas, and evacuation lumens create a closed PIPAC aerosol path that improves peritoneal distribution while limiting injury and seeding risks.

A three-opening metering chamber fills during assembly, eliminating nasal dispenser priming, fluid waste, and delayed first use.

Assembly-time filling through a first chamber opening primes the metering pump instantly and avoids fluid loss from repeated priming strokes.

Coordinated negative pressure and fluid instillation adjust to alarm conditions, improving wound cleansing, tissue growth, and therapy reliability.

Weight-triggered lockout and alerts stop sharps containers from overfilling, reducing needlestick risk and disposal errors.

Cushioning flow openings rotate clot into long strips for continuous aspiration, reducing fragment release, clogging, blood loss, and procedure time.

Fresh dialysis fluid is sterilized through a membrane while one-way valves route used fluid around the filter to prevent clogging and contamination.

Online mixing with conductivity feedback and disinfection lets a PD cycler reuse components, cut disposable waste, and simplify setup.

Real-time CO2 and gas sensing in pleural drainage replaces subjective visual air-leak checks to support safer, timelier chest tube removal.

Forehead-only EEG with neural-network post-processing improves N3 sleep detection and stimulation comfort without behind-ear electrodes.

A boost-driven micropump feeds aerosol precursor to the heater while separate power control improves vapor production without combustion.

A circumferential lip seal blocks fluid from reaching the valve face in a needleless connector, reducing droplet leakage risk after access.

Accelerometer-based configuration detection lets the pump adjust power dissipation to keep housing temperature safe during ambulatory use.

Tilting the ultrasonic atomizing sheet lets excess tobacco tar drain back through the cotton, preventing soakage, leakage, and weak smoke output.

A piercing-tool kit converts a sealed wound dressing for pressure gradient therapy, cutting stock complexity while preserving sterility.

Sequential electrode activation moves high-frequency DC signal paths around an injury site to improve pain relief and healing.

A rectifying chamber, steel ball, and elastic ring prevent oil leakage when toppled while keeping aromatherapy mist flow stable.

Impedance between functional and reference electrodes reveals which catheter electrodes touch tissue rather than blood, improving ablation accuracy.

Pressure sensors and a controller detect blood in a wound therapy flow path, then trigger alarms or stop suction to prevent patient harm.

Flexible-sheet preconditioning and temperature-compensated pressure sensing improve APD cassette monitoring while avoiding sealing delays and noise.

A spring-driven piston generates high-speed air through a Venturi tube, enabling portable transdermal liquid atomization without gas cartridges.

A direct-fit catheter and syringe assembly removes needle handling to cut contamination risk, waste, and leakage during wound care.

A hinged two-part needle cover replaces separate sheath and protector parts to cut bulk, simplify one-handed use, and reduce accidental puncture risk.