Medical Devices TRIZ Cases

Fluorinated thermoplastic polyurethane reduces blood clotting risk by lowering surface tension, balancing chemical resistance with material cost.

A gastrostomy tube system removes ingested food via siphoning while managing fluid infusion.

An expandable distal region adjusts housing diameter to optimize blood flow through the inflow area of an intravascular pump.

A nebulizer employs a rigid metal spacer plate to fix the transducer-mesh gap, ensuring consistent mass flow rates despite manufacturing tolerance variations.

Segmented pump architecture pairs a reusable controller with disposable drug units to resolve manufacturing cost and dosage accuracy trade-offs.

Adjustable connectors prevent tubing kinking and pinching, ensuring reliable fluid flow while eliminating visible bulges under clothing.

A fluid collection assembly with a length adjusting feature adapts to varying patient anatomy for secure placement.

A dry powder inhaler uses adjustable air passages to de-aggregate medication particles into fractions smaller than 10 µm.

A rotary aerosol generator depresses a discharge tube to release a metered dose of fluid through a nozzle orifice.

Barrel adapters integrate retractable needle mechanisms with standard syringe barrels to prevent needlestick injuries.

A segmented electronic cigarette mouthpiece integrates a liquid chamber with an atomizer containing a columnar alloy sponge for aerosol generation.

A sterile spray pump uses a filter element to supply external air while preventing contamination.

Segmented protective layers delay fluid exposure to prevent electronic damage during pharmaceutical release.

An earphone device integrates brain wave sensors to measure user states and control music playback for personalized audio experiences.

An automated fluid pump system separates an adhesive cover from the housing upon removal, enabling safe self-administration of medications at home.

A multimodal surgical gas delivery system integrates insufflation and smoke evacuation through a single fluid pump and conduit network.

A tubular medical sleeve uses a hinged door to provide sterile protection and quick access to intravenous injection sites.

A peristaltic pump actuator moves dialysis fluid through tubing to a heating container and patient line.

A vascular access port uses a bowed base to conform to the vessel wall.

A negative pressure wound therapy controller distinguishes blockages from leaks by measuring pressure changes during periodic pump cycles.

Controller varies peristaltic pump operation based on sensor signals to maintain aspiration pressure, reducing distal embolism risk during thrombi removal.

A male connector with a circumferential groove allows a female locking extension to rotate while maintaining axial engagement.

An automated hand sanitization system employs sensor-triggered ozone water delivery to ensure uniform pathogen removal while minimizing skin irritation.

External flow paths flush bacteria from the urethra to reduce infection risk while multiple drainage eyes ensure complete bladder emptying.

Cough-induced isolation separates the gastric valve from the lower esophageal sphincter, resolving reflux detection ambiguity.

Chemical liquid injector replaces manual entry with RFID tags storing injection parameters, preventing medical errors from improper syringe handling.

Silicon suboxide valve seats reduce adhesion threshold force, extending component life and maintaining reliable fluid flow.

Dynamic drain period adjustment prevents alarms and shortens dwell time while maximizing dialysis solution utilization.

A decompression wrap uses an asymmetric occlusive layer to create a sealed negative pressure chamber for tissue swelling reduction.

A delivery device embeds a vibration motor and buzzer within an elastomeric support member to generate haptic and audible signals.

A breath-actuated delivery device entrains powdered substances into an air flow generated by user exhalation.

A compact injection device uses a low-energy striking mechanism to drive a needle through plant bark.

A thermal applicator delivers targeted heat to the frontal cortex to enhance sleep quality and reduce onset time.

Spring-loaded expression plates separate cryoprecipitate from thawing plasma, reducing preparation time and labor intensity.

A flat metal warming plate with a short rim heats dialysis fluid through direct contact, reducing device weight and size compared to bulky metallic basins.

Segmenting the motor array enables independent control of vibration patterns, resolving the contradiction between adaptability and device complexity.

Electronic unit analyzes acoustic click sounds using fast Fourier transform to identify sequential injection events.

Segmented membrane flaps and radial ligaments enable bidirectional sealing to prevent blood loss and air embolism during vascular access.

Fluid level sensor with mechanical shield detects canister full condition via electrical circuit completion.

Gravity sensors detect height changes to prevent backflow and false alarms caused by radio-frequency reflections.

Elastically displaceable arms in the syringe adapter accommodate different cylinder diameters, standardizing mounting procedures across multiple syringe types.

A helical locking sleeve driven by an elastic member retracts the insertion component, resolving skin bulging caused by large electronics footprints.

A nasal spray package integrates therapeutic liquid dispensing and tissue storage within a single container using dual compartments.

A catheter infusion port uses a rounded U-shaped channel and cover to eliminate sharp internal edges.

Integrally molding flocks into a thermoplastic applicator body eliminates glue dissolution in cosmetic materials and prevents flock shedding during use.

Nested mesh reservoirs expand to retain drug payloads while preventing excretion during urination.

A photometric system measures fluid volume in a collapsible reservoir using light absorption through an excipient-enhanced liquid.

Multi-slope cam surfaces load and block arming members in dry powder inhalators, preventing untimely triggering and overdose during handling.

Dual turbine pumps in a compact housing prevent device failure, while curved passages eliminate blood stagnation and clotting risks.