Infusion Syringes TRIZ Cases

A syringe body features a concave distal wall portion to store liquid lubricant and prevent nozzle adhesion.

A needleless access port valve replaces rigid plugs with a flexible band that opens under pressure and self-flushes residual fluids to prevent contamination.

A syringe reservoir vent allows gas entry to equalize internal pressure, preventing violent piston recoil and structural damage.

A medicament delivery device uses a biased force element and switching mechanism to retract the needle assembly automatically.

A syringe filter uses a movable carrier to bypass liquid during intake and force it through the filter during expulsion.

A cap element with a retention device closes the fluid channel of a medical connector assembly.

An intermediate adapter with locking projections engages L-shaped slots on the needle body, enabling rapid exchange while reducing needle prick risks.

A retractable sealing element with a self-sealing slit encloses the needle guide pin during fluid infusion device operation.

A needle assembly uses a clear housing and internal vent to visualize blood entry instantly, preventing leakage during withdrawal.

A measuring pipette uses elastic wall deformation to lock the piston at precise graduations without friction pads.

A rotatable needle hub enables controlled axial movement of a piercing element within a catheter assembly.

Segmented barrels vent trapped gas during extracorporeal life support setup, reducing user error.