Infusion Syringes TRIZ Cases

A rotary piston pump valve in a disposable cartridge enables sterile drug reconstitution, accurate dosing, and leak-free transfer.

A beveled rail and elastic arm convert shield motion into rotation, locking front and rear needle protection after insulin injection.

A controller-driven variable-rate drive delivers preset medicament volumes at different speeds to improve dosing precision and compliance.

Movable pins guided by a cam sleeve let a powered injector securely engage and release a syringe plunger for precise fluid delivery.

A user-adjustable stroke limiter sets plunger travel to deliver defined syringe doses with one barrel design instead of multiple syringe sizes.

A universal adapter, nested cannula, and needle-free valve cut contamination, hemolysis, and procedure time in blood draw and drug delivery.

A one-way rotation lock filters user hand movement from injection pen knob sensing, improving medicament dose measurement accuracy.

A locking syringe holder and needle housing guide reservoir filling while reducing attachment errors and fluid delivery malfunctions.

A direct piston-rod end stop removes tolerance buildup from complex drive chains, improving dose accuracy and repeatability.

A cup-cap assembly combines mechanical friction and chemical disinfection to keep syringe luer tips sterile while reducing VAD maintenance steps.

A worm-and-pinion syringe drive meters small viscous BPH doses accurately while resisting backpressure and plunger reversal.

A swellable barrier on the infusion cannula expands in bodily fluid to block backflow toward the sensor and preserve analyte reading accuracy.

A pawl-and-slot plunger locks after dosing to deliver a precise medicament dose and prevent syringe reuse and infection risk.

Overmolding a plastic Luer thread onto a co-injection molded syringe preserves the barrier core while cutting assembly steps, cycle time, and particulates.

Coordinated wireless feedback links multiple injectors to guide start, in-process, and end-of-dose states and avoid administration errors.

A sleeve and axial lock attach to an injection control dial to log dose timing and quantity without disrupting normal use.

A septum priming cap automates tubing priming, blocks flow during connection, and helps detect occlusions or misconnected cannulas.

Nested telescoping screws and a keyed anti-rotation plunger drive enable compact, accurate drug delivery without extending into the reservoir.

A fixed tamper ring and compressed sealing plug create a visible gap after opening, preventing re-engagement and false sealed appearance.

An extended nozzle, higher-capacity syringe, and plunger lock improve ergonomic, precise intraurethral delivery for safe self-administration.

A closed chamber and filtered air path keep fluid transfer sealed during syringe changes, reducing contamination risk.

A resilient sealing member and click-fit adapter keep prefilled syringe needle joints sealed during long-term storage under heat and humidity.

Digital syringe imaging verifies drawn dose from plunger position, reducing reading errors and creating a stored dosage record.

Serrated plunger teeth and advancing and retaining latches segment doses while limiting travel, improving pressure consistency and reducing skin damage.

A gravity-assisted valve selectively enables fluid flow during reconstitution while containing toxic gases during administration.

An expandable hydrogel absorbs bodily fluid near the infusion cannula, blocking backflow from reaching the sensor and preserving reading accuracy.

A flat barrel scale and phone or tablet imaging verify plunger position before injection and help prevent needlestick injuries.

Aligned barrier-film slits enable pressure-driven flow through a multi-chamber syringe stopper while protecting medical fluids from contamination.

A compact attachment measures expelled medicament by sensing dial-member rotation relative to a torque-supported trigger, without obstructing two-handed operation.

Radially elastic attachment elements simplify piston-rod bearing assembly, while the housing opening prevents disengagement during use.

COP and COC syringe barriers limit EtO ingress, keeping saline and heparinized saline within acceptable pH ranges after sterilization.

Optical sensors in the cap detect plunger position and support repeatable reservoir-volume measurement across diverse liquid delivery devices.