Medical Devices TRIZ Cases

Ionic current in a polarized membrane chamber enables precise microflow monitoring while avoiding direct electrode contact and contamination.

Dynamic negative pressure control uses flowrate and pressure sensing during peritoneal dialysis drain to reduce pain and shorten drain time.

IPP and dialysate density tracking estimate intraperitoneal volume during dwell time, improving ultrafiltration control in home peritoneal dialysis.

A preloaded rotating trigger with actuator blocking stabilizes inhaler actuation and keeps liquid spraying smooth and reliable.

Processed EEG, hemodynamic, and capnography feedback let ANFIS adjust intravenous anesthesia dosage in real time for safer control.

A pump-driven air expulsion system and one-way valve deliver refillable powder doses with more consistent airflow and lower assembly complexity.

Image-based reflectance mapping guides selective undereye cosmetic application to brighten dark areas without coating the full region.

A membrane airflow path boosts wound exudate evaporation to delay canister overflow, cut replacements, and limit fan energy use.

A torsion spring drives separate trocar and conduit-carrier motions to pierce tissue, place a cannula, and preserve fluid communication.

A finger-mounted cover keeps tampons or suppositories hygienic during insertion while improving grip, guidance, and ease of use.

A MEMS CO2 sensor at the enteral tube tip gives real-time feedback to detect airway misplacement without X-ray delays or user interpretation.

A sealed piston and expandable bladder control bolus fluid transfer to prevent overfilling, leakage, and unintended over-administration.

A single-valve breakaway connector uses the needle-free fitting seal as the patient-side valve to cut size, parts, and reconnection error.

A carrier-backed adhesive support holds stretchable thin films within distortion limits, preserving via alignment and manufacturing yield.

Surface-wicking microtextures feed aerosol liquid evenly to the heater, improving heating uniformity and reducing charring and pyrolysis.

A handheld infusion assembly pairs reusable drive and disposable fluid modules to deliver rapid, warmed, non-pulsatile flow during transport.

Automatic contact detection reads target current in real time in BNCT, avoiding particle-loss errors and manual wire disconnection.

A conduit nested between transmission-layer films prevents piercing, simplifies manufacture, and keeps negative pressure flow stable.

A porous CNT/SMP actuator enables catheter bending, self-heating, and stable structure while supporting reduced diameter designs.

Separating the spring shield and needle mount into two sub-assemblies simplifies sterile safety needle assembly while reducing checks and cost.

An eversible encapsulation pouch uses composite permeable and retentive layers to enable atraumatic removal while preserving the tissue pocket.

A flap-guided twin pouch separates amniotic and placenta fluids for graduated measurement, improving blood loss assessment during childbirth.

An integrated locking insert and disinfectant absorbent layer secures luer connection, enables disinfection, and blocks connector reuse.

A flexible membrane and pressurized chamber regulate outlet pressure without electronic feedback, preserving sterility and fast response.

Optical level sensing plus bottle weight measurement improves drainage volume accuracy under bubble interference and enables automatic alerts.

A dual-material hose with pressure-opened side orifices enables adjustable local fluid delivery while reducing tissue irritation.

Spring-loaded needle retention and pre-loaded stackable trays cut needle handling time and speed high-volume PIT tag implantation.

Automated drain purge moves used dialysis fluid from the drain container to a house drain, reducing manual handling, noise, and setup delays.

A non-conductive proximal wire section enables effective sphincterotomy while reducing duodenal wall burns from unintended contact.

Payload retention features and indicator windows help ensure complete subdermal pellet insertion with clear hub position visibility.

A push element and needle support unlock and retract the syringe needle automatically, preventing accidental punctures without changing injection use.

A repositionable suction head mounts to the surgical drape for hands-free smoke and odor capture, then detaches quickly for relocation.

A deformable applicator with a drapable skin-contact layer and sleeve enables precise cosmetic or medicinal dosing while reducing waste and clogging.

Integrated processor, memory, and contacts let the pod authenticate formulation, prevent tampering, and improve e-vapor energy use.

Radial gas channels let a hard needle case support sterilization while breakable cap links provide tamper evidence and automated handling.

A nested actuator and lock let an instrument reach 30-35 mm beyond an indwelling catheter without making the introducer harder to handle.

A variable-diameter proboscis and locking elements improve IV line sealing, secure coupling, and septum protection during instrument delivery.

Real-time urine monitoring and matched hydration help adjust diuretic dosing to remove excess fluid without hypotension or organ damage.

A hemispherical light-transmitting tip emits in multiple directions, making the tube's distal end easier to see through the body.

Automated grippers and suction cups open double-wrapped syringe packs without manual handling, preserving sterility and speeding filling.

A fixed-volume receiving structure is filled, then isolated for heating, enabling precise aerosol dosing and consistent inhaler delivery.

A spring-driven piston pump uses a reusable drive assembly and disposable reservoir to remove treatment-site fluid while reducing waste.

Guided locking positions let a removable spray head protect the needle in transport while enabling aspiration and reproducible spraying.

Machine learning detects clot engagement and switches catheter aspiration pressure to improve thrombectomy while limiting blood loss.

A split-thread cap disinfects both male and female luer connectors with absorbent antimicrobial media while limiting disinfectant ingress.

An SMA-driven sliding fluidic member and hard-stop plunger improve fixed-volume liquid drug delivery by avoiding pump sticking and slipping.

Dual oscillators combine low-frequency needle motion with ultrasonic vibration to cut insertion force, pain, and skin trauma during tattooing.

A dose dock stabilizes syringe-driven subretinal injection, improving delivery precision while reducing retina trauma during macular treatment.

Dual pressure sensing and modular pump-power architecture help maintain wound vacuum, detect blockages, and improve fluid management.

Periodic low-power sensing in the wound flow path detects leaks, overpressure, and treatment deviations to keep negative pressure therapy on track.