Infusion Syringes TRIZ Cases

Optical sensors detect the liquid-gas interface within syringe chambers to calculate real-time fluid volume without manual input.

A syringe assembly uses a passive locking mechanism to secure the plunger rod within the barrel after injection.

Bellows-style sleeve captures viscous substance leakage past the piston seal, preventing contamination of internal electronics and mechanical parts.

Superposed threads convert rotational motion into axial displacement, reducing component count and improving recycling efficiency.

A rotatable guide tube enables lateral cannula emergence for precise angular control during medical procedures.

A laminated syringe gasket employs a circumferential film projection to prevent liquid drug leakage and maintain stability.

Flat indicia surfaces enable linear dosage marking while a lateral needle retraction cavity houses longer needles without increasing overall syringe length.

A vial adaptor with a keyed hub prevents incorrect insulin concentration transfer by blocking wrong needle insertion through the cleaning passageway.

A sensor uses a bypass antenna to control signal transmission based on physical displacement.

A medical connector assembly uses cam features to rotate a tubular member, opening or closing the fluid path during connection.

Annular visual and tactile indicators on tubing ends enable rapid fluid verification, reducing misconnections in complex clinical environments.

A flush syringe with a dual Luer connector coupler enables sequential sterile flushing procedures.

Thermoelectric cooling manages UV-LED heat to boost reliability and accelerate wound healing.

Segmenting the piston rod allows independent movement during needle protection activation, preventing medication reabsorption and ensuring accurate dosing.

A surgical needle features a priming portion that prepares target tissue before cell delivery.

A multi-lumen injection needle merges hydro-dissection and spacer delivery into one assembly, reducing puncture complications during prostate radiation therapy.

Dual locking members with biasing springs hold a shield member in place, resolving reliability and ease of operation trade-offs.

Specific compounds prevent lubricant crystallization, maintaining container closure integrity during extreme temperature changes.

A syringe carriage uses a roller element to slide the plunger along the cartridge for precise volume control.

A plunger mechanism detects pressure loss in a distal chamber to signal epidural space entry.

Electronic indication unit displays relation between administered dose and target dose to prevent unintended over or under administration errors.

A spiral cam gear assembly translates syringe withdrawal into precise plunger movement.

A metering device uses a rotating inner plunger body to create precise passages for flowable preparations.

An expandable hydrogel plug deployed via catheter secures vascular punctures, reducing hematoma risk and procedure time.

Segmented gripping elements on distinct cylindrical portions resolve the trade-off between ease of operation and structural rigidity in syringe needle caps.

Segmented rigid and flexible walls enable a self-sealing male Luer connector to contract radially upon engagement.

Segmentation separates sterile barriers from reusable pumps to eliminate radiopharmaceutical waste while shielding protects staff from radiation exposure.

Magnetic mounting secures a rotatable camera system on inclined bays, reducing operator strain and error risk during medicinal preparation.

Piston rod movement actuates a mechanical indicator through detent engagement, providing clear visual feedback on priming status.

Rotating collar sets mechanical plunger travel limit, eliminating visual scale monitoring errors.

A two-chambered syringe integrates medication and flushing liquid within concentric barrels to enable sequential delivery through a single device.

A valve stopper membrane with a pressure-activated notch facilitates viscous fluid transfer, reducing injection force and preventing premature mixing.

Nested chambers and localized ribs secure the antiseptic cap, preventing rotation and reducing infection risks while managing device complexity.

A puncture needle protection assembly uses a cam projection and guide passage to rotate an inner member relative to an outer cylinder.

A medical connector integrates a luer member with an annular engagement structure for secure fluid coupling.

Segmenting the catheter into permanent and temporary portions allows replacement without opening the pump pocket, reducing infection risk.

Adapter resolves compatibility contradictions between specific barrel shapes and universal mounting needs while ensuring safe needle retraction.

A slit valve hub connector seals open-ended catheters during guidewire placement, preventing blood accumulation in dead space while maintaining fluid flow.

Segmenting the hub post from the hub body reduces sharps waste volume while preventing biohazardous aerosol generation during disposal.

A syringe plunger with a continuous hollow channel and septum enables precise fraction discharge.

A spinal cannula needle hub incorporates a prism to refract light, resolving optical recognition challenges of clear cerebrospinal fluid backflow.

Spiral ribs on a plunger-mounting member engage a tubular gasket body to resist negative pressure separation during pump dosing.

A connector element establishes sequential fluid connections between syringes to reconstitute bioactive agents and form medical paste.

Telescopic inner and outer sleeves reduce storage space by nesting the plunger rod while maintaining tamper-proof locking.

A tamper evident syringe assembly uses a tether and cover to secure the plunger within the barrel.

Segmented deflecting members engage a longitudinal groove to reduce peak forces that deform plastic parts during injection.

A portable infusion pump uses a detachable controller unit to manage medication dispensing and monitoring.

An elastic member inside the needle hub seals around the inserted tube to maintain liquid-tight communication without precise alignment.

Removable actuator member expands thumb contact area to resolve difficult actuation and incomplete dosing in compact fluid dispensers.