Ampoule Syringes TRIZ Cases

A nebulizer counter device blocks opening until a set number of operations completes, preventing container reuse and minimizing soiling.

A deflectable interference member constrains cartridge insertion depth until activation, preventing leakage and contamination by delaying septum penetration.

A medicament delivery device uses a rotatable coupling mechanism to move an injection needle holder from storage to use position.

Surface roughness anchors the injection needle to the resin outer cylinder, preventing joint strength loss after autoclave or ethylene oxide gas sterilization.

A dose limit nut with endstop features guides plunger travel to restrict maximum and minimum medicament settings.

Rotatable plunger with ratchet teeth and indexer controls linear displacement to resolve complexity and precision trade-offs.

Segmented plunger rod and pinion gearing deliver 0.01 ml doses via stepwise pressure, reducing operator force for viscous substances.

Internal projections urge a seal away from the wall to open bypass channels, preventing component trapping in dual-chamber vessels.

Multi-sensor arrays measure signal propagation time to determine dose volume, resolving precision limits in automated monitoring.

A dose setting mechanism uses a helical groove and dial sleeve to enable precise medication selection.