Automatic Syringes TRIZ Cases

Administration data is encoded in modulated current through the user's skin, enabling secure compliance tracking without antennas.

A rotational sensor counts surface features during injection to automatically determine delivered dose and avoid manual patient tracking.

A shape-memory actuator and temperature sensing lock drug delivery outside safe thresholds to keep dosing predictable across conditions.

A rotator, guide track, and spring-loaded guard lock the delivery member after use to prevent accidental exposure and contamination.

Differential thread pitches gear down dose-drum rotation, fitting more small-increment dose indicia into a mechanical pen display.

An inclined guide track rotates a lock element to secure the delivery member guard after use, preventing distal movement, injury, and contamination.

A torque-limiting dial coupling prevents overdose-setting damage in a threaded dosage chamber while keeping liquid drug delivery precise and usable.

Conductive tracks cut by plunger and needle guard motion create detectable state changes to verify full dose delivery and proper insertion.

A vacuum-powered syringe infuser replaces electric pump complexity to deliver consistent MRI-safe medicament infusion in any orientation.

Magnetic sensing on the plunger rod tracks dose delivery and needle insertion depth to prevent incomplete injection and improper administration.

A rotating collar dampens needle shroud force on the skin, reducing bruising and needle-stick risk while supporting accurate dosing.

Force-guided partial needle retraction enlarges the injection cavity during subcutaneous delivery to reduce tissue pressure and discomfort.

A segmented autoinjector drive creates a loud end-of-dose click with precise timing while reducing dependence on tight dimensional tolerances.

A geared multi-wheel counter converts plunger motion into accurate remaining-dose indication while keeping the drug delivery mechanism compact and reliable.

Elastic buffer arms absorb needle-ejection impact to protect glass syringe barrels from damage while maintaining effective injection.

A gas-powered flexible member controls prefilled syringe injection, reducing breakage and leakage while delivering high-viscosity doses in one step.

Captured images of a post-dispensing indicator turn delivered dose size into a timestamped log without add-on hardware or altered injector handling.

A pivotable locking element engages plunger slots to hold multiple vacuum lengths without rod rotation, speeding aspiration setup.

A locking plate and rotational release cap keep electronics protected during use, then allow clean separation for recycling after injection.

A lock-ring breakaway force lets the needle guard retract reliably, then lowers resistance for gentle jet injection without syringe damage.

A cap-controlled blocking surface keeps the needle cover locked until removal, avoiding sticking and unintended autoinjector activation.

Periodic polling of anti-phase optical sensors keeps drug delivery electronics in low-power mode until encoder movement signals dose selection or delivery.

A separate shell with closure and fixation elements gives medicament delivery devices distinct branding without changing the functional housing.

Circumferential visual and tactile indicators show the unlocked state from multiple angles, helping prevent misuse of a medicament delivery device.

A single compression spring, decoupling arms, and a delay box coordinate injection, full dose delivery, and delayed needle retraction.

End-of-dose clicker engagement separates dispensing feedback from dose setting, reducing user confusion while keeping the injection pen compact.

A single compression spring sequences needle insertion, full dose delivery, and safe retraction while reducing parts and user effort.

A reusable add-on module uses switches and optical sensing to record and communicate autoinjector dose events without increasing injector complexity.

A sealed hub and force-limited actuation rod enable precise suprachoroidal delivery while reducing leakage, retinal risk, and injection force.

A front-end locking and recapping scheme prevents accidental autoinjector actuation while protecting needle sterility and simplifying use.