Medical Devices TRIZ Cases

A support vector machine classifies pump turns and pressure variation scores to identify full canister states in negative pressure wound therapy systems.

Electrochemical cleaning pulses remove insulin excipients from glucose sensor electrodes, preventing measurement interference.

An insulated air pocket isolates the heating element from the combustion chamber, reducing oxidative byproducts and unwanted residue during vaporization.

An expandable intravascular device with multiple arms generates back pressure in a coronary vein to deliver reperfusion therapy.

A fluid chamber generates vacuum to expand veins, and a fastener acts as a tourniquet to eliminate separate components.

Integrated actuator needles move circularly to pierce capsules, reducing inhalation resistance for high-dosage dry powder delivery.

A metered administration device reduces axial play between the delivery mechanism and housing using a force sensor and contact element.

Segmented orifices and high pressure atomize fluid for congested nasal passages, reducing delivery time without inhalation.

Tapered housing walls compress the septum to eliminate complex compression geometries, reducing device complexity while maintaining reliable sealing.

A closed-loop system regulates anesthesia depth using distinct injection frequencies for hypnotic and morphinomimetic agents.

Segmented extended catheter uses nesting and intermediary balloon to resolve pushing force versus reach contradictions in curved vessels.

Leaf spring clamps secure the sensor against body movement while an adhesive stabilizes the base plate for reliable detection.

Segmented mounting zones separate the pump body from user interfaces, resolving conflicts between security against unauthorized access and port accessibility.

A medical device controller classifies detected user events via a database to generate tuning instructions for insulin delivery.

Adjustable mating members accommodate various arm sizes while the stretchable material secures needles and tubing to prevent kinking.

An atmospheric pump uses a non-porous air-permeable polymer membrane to equalize internal pressure during liquid dispensing operations.

Pressure sensor detects interference engagement with collapsible reservoir walls to signal fullness, preventing drug waste from overfilling.

A canister bypass member routes air from the inlet port to the filter member, maintaining airflow through liquid absorbent material.

A dispenser indicator changes visibility states via a pusher element to confirm actuation.

A nasal dispenser assembly uses a positioner member with facial bearing zones to stabilize device orientation during actuation.

Curved 180-degree air flow channel geometry optimizes vortex chamber suction to empty blister packs without complex mechanical components.

Conductivity sensors integrated into dialysis housings measure fluid presence to resolve manual verification reliability issues.

A hemostasis valve assembly uses an elastomeric member with a variable-width channel to form liquid-tight seals over medical instruments.

Tapered engagement members guide the syringe barrel into alignment with the fluid injector locking mechanism.

Merging the valve housing with the septum reduces port profile and footprint while maintaining reliable reflux prevention during high-pressure infusion.

An overmolded end element seals braided tubing to prevent stress crazing and cracking that cause air ingress and pressure failures.

A helical coil delivery device uses solder seals to enable sequential active agent release.

A portable peritoneal dialysis machine uses a dual voltage heater circuit to reconfigure heating elements automatically.

A gastrostomy feeding apparatus with axially expansible spring members automatically adjusts length to maintain pressure contact.

Offset airflow channels prevent condensate contamination and balance pressure within e-liquid storage compartments for consistent vaporization.

A pivot arm converts axial trigger motion into rotational movement within a dry powder inhaler mechanism.

A nebulization device uses a rotary ring and fixing plate to define a precise liquid storage volume, resolving inaccurate dosing risks in medical applications.

Molded radiopaque indicia in the septum resolve imaging visibility without increasing manufacturing complexity.

A dual tapered capillary restrictor stabilizes liquid flow through smooth geometric transitions.

Ultrashort pulse lasers create subsurface micro-disruptions in skin tissue to alter structural properties for enhanced protection and drug delivery.

A closed-loop sodium sensor adjusts hypertonic saline infusion rates in real time.

A semi-rigid tray device separates liquids from solids using a filter and vacuum drainage system.

Circular shrouds and mating surfaces resolve the contradiction between measurement accuracy and polycarbonate material usage in hemodialysis systems.

A peritoneal dialysis system uses reusable fluid lines and inline heaters for heat cleaning sequences.

A biosorbable polymer network generates oxygen within elastic closed cells for wound treatment.

Absorbent supports in a housing clean male connector surfaces while a center post blocks lumen ingress.

A gas release device with a flared portion redirects bodily liquid flow to recirculate air bubbles toward the inlet port.

A wound therapy system estimates canister volume using pump airflow measurements and stored model data.

Integrated breathing monitoring apparatus processes sensor data to distinguish apnea and snoring patterns without physician supervision.

Flexible membranes accommodate expansion and contraction cycles during negative pressure therapy, preventing lateral fluid flow and patient discomfort.

A passive transponder circuit detects movable element displacement within a medical flow regulator to enable precise fluid control.

Integrating a medication dispenser within a watch housing eliminates the need to locate separate devices during emergencies.

An implantable device navigates intravaginal deployment while using ultrasonic elements to dispense fluids precisely into the uterus.

Segmented connectors with spiral grooves reduce device complexity while enhancing surgical handling properties.

A blood processing system secures umbilical cord blood bags during centrifugation and automates component isolation for precise separation.