Infusion Syringes TRIZ Cases

Segmented gas chambers with intermediary vents relieve vacuum pressure to ensure proper septum operability and reduce infection risks.

Segmented components enable sterilizable vacuum stoppering of medical containers, resolving the conflict between sterility and operational flexibility.

A shielding needle assembly uses a pivoting skin sensor lever to maintain the cannula exposed until removal triggers automatic retraction.

Segmented base and rotating hub allow single-handed reorientation of the tubing set without removing the cannula from the patient.

Segmented shell with hinge mechanism encloses pre-filled syringes, reducing storage footprint while maintaining protection against accidental piercing.

A drug delivery cap uses rigid orientation features and flexible snap features to ensure correct assembly.

An angled bump geometry reduces activation force variability, ensuring consistent needle cover movement for safer user operation.

An annular receptacle with a base fulcrum distributes stress during connection, preventing breakage from over-tightening medical fittings.

A rack and pinion mechanism converts dial rotation into precise plunger movement, resolving human error in low-volume dose delivery.

Deflecting arms on the plunger rod lock into the stopper to prevent reflux caused by spring-back forces during injection.

Dynamic stopper deformation lowers breakout force while maintaining an aseptic barrier against pathogens in medical syringe applications.

Force-fitted retention device prevents piston ejection during pressure filling, resolving reliability and complexity trade-offs.

A syringe sleeve retracts an injection needle via a coil spring to prevent accidental needle sticks during manual operation.

Segmented hooks release the needle seat upon slider movement, preventing accidental retraction and minimizing medicine loss.

Flexible inelastic pouch accommodates surgical drain evacuator volume changes while preventing backflow and reducing infection risk.

A two-component injection-molded plunger combines a hard core with a soft sealing layer to maintain contact against the syringe cylinder wall.

A syringe backstop secures the plunger via a skirt and extensions.

Wider needle adapter aligns flush with vial stopper to prevent clogging during short needle aspiration.

Ultrasonic transducer tracks plunger position to differentiate air shots from actual injections, ensuring accurate dosage recording.

Curved obturator tip designs distribute mechanical stress to reduce tissue trauma and recovery time while maintaining effective surgical penetration.

A disposable syringe uses a piston rod to house the needle and actuate the plunger.

A floating needle adapter establishes bidirectional fluid communication between a cartridge and vial via a movable locking mechanism.

Segmented pathways in this transfer device isolate volatile drugs from the atmosphere, preventing concentration errors and staff needle injuries.

A vented reflux collection syringe manages gastric fluid and gas in enteral feeding lines.

Pivoting hinged flange enables syringe compatibility with both metering pumps and gravity-feed systems while maintaining sterility.

An ensemble of partitioned sensor glucose models selects regional estimators to combine predicted values.

Threaded hole innermost portion diameter creates sealing pressure against syringe barrel to prevent liquid drug leakage.

A syringe piston integrates a proximal filter to trap toxic methyl methacrylate vapors during bone cement preparation.