Medical Devices TRIZ Cases

Capillary microchannels replace bulky mechanical valves to control liquid medicament flow in smaller delivery devices.

A guided wick feed, slide, holder, and cutter improve wick alignment and trimming for consistent nicotine pod heater assembly.

A guided wick feed and holder improve wick alignment and fixation, supporting stable capillary flow and consistent non-nicotine pod vaporization.

A preassembled locking and clamping element lets surgeons connect and secure a catheter to an implanted port with simpler one-hand handling.

Perfusion cavities and layered shaft insulation contain wear particles while damping vibration, noise, and unstable flow in high-speed rotation.

A small deformable pneumatic accumulator smooths NPWT pressure waves, stores negative pressure, and cuts pump runtime during leaks.

A discontinuous-plus-annular weld layout seals the membrane flange to the substrate while preserving oscillation and reducing leakage and corrosion.

Lateral membrane filtration in a removable nozzle guide tip blocks dust entry while simplifying maintenance of hospital gas and vacuum sockets.

Capillary microchannels replace bulky mechanical valves to block backflow and refilling in compact liquid medicament delivery.

Sequentially extruded tubing segments with transition zones combine flexibility, inertness, and stronger joining while minimizing delamination.

Distinct bevel angles and radiused transitions create a smoother needle tip that lowers skin penetration force and pain perception.

A keyed male-female luer geometry blocks wrong line connections while preserving a secure fluid-tight seal in urgent care use.

A swashplate with adjustable inclination varies needle stroke, improving precision and adaptability in skin piercing tasks.

Bristles and suction work together to clear tongue furrows, remove loosened debris and microorganisms, and limit gag reflex and backflow.

Continuously formed flexible connector-tube assemblies remove mechanical joints to prevent leaks, flow restriction, and contamination at cryogenic temperatures.

A concave valve stem surface prevents lodging during acute-angle access, helping the swabable valve reclose reliably and stay easy to clean.

Sequential extrusion creates integrally joined soft and hard tubing segments for flexible compression, stronger connector bonding, and less delamination.

A flared spigot extension and meltable collar increase tubing pullout resistance, maintain sealing engagement, and simplify assembly.

Radial insertion with coordinated rotation and axial motion automates Luer-lock joining to reduce patient stress and leak risk.

A hinged keyed cap built into the luer lock connector blocks mismatched fittings, cutting connection time and jamming risk.

A living-hinge cap with an aligned through-hole guides matching luer fittings, preventing wrong connections and jamming in fluid line setup.

An axial catch-release connector secures medical tubing while external valve springs keep the fluid path cleaner and less prone to biofilm growth.

A tailored aliphatic polyamide layer removes the adhesive layer while preserving durable interlayer bonding after fuel exposure and heat treatment.

External valve-biasing members keep springs out of the flow path while a catch-release coupler prevents accidental tubing disconnection.

A sliding release and spring-biased catch prevent accidental tube disconnection, while external valve springs protect fluid flow integrity.

Modified collar diameters keep medical fluid connectors compatible with luer fittings while blocking unintended cross-connections.

A continuous sealing groove and protrusion hermetically seal multiple microchip reservoirs, increasing packing density and payload in compact implants.

Scalloped tines hold different tube diameters while a ball-and-socket mount repositions lines cleanly on beds or medical equipment.

A sealed helical channel around a mandrel limits triboelectric seizing and micro leaks to keep medical infusion flow stable over time.

An expandable reservoir buffers IV bolus pressure spikes, lowering injection force, protecting tubing integrity, and keeping fluid delivery predictable.

Segmented annular laser welds join the membrane flange to the substrate to prevent gaps, corrosion, leakage, and oscillation distortion.