Infusion Syringes TRIZ Cases

This case shows how integrated barbs and mating pockets inhibit forward plunger movement and prevent accidental fluid expulsion.

A shielded syringe hub and modular pump accommodate large radiopharmaceutical volumes while reducing exposure and air embolism risk.

A movable engagement member in the finger grip provides tactile and sound feedback on plunger movement while preserving needle aspiration.

Standardized marking on glass luer tips compensates for dimensional variation and user variability during female fitting.

This case uses a reusable base, disposable cartridge, solenoid valve, and pivoting needle to balance automation, cost, and wearability.

A cap pressing surface and ring-shaped protrusion distribute seal load uniformly, improving syringe sealing reliability.

This case uses angled annular protrusions to balance BLF/GF and glide variation while preserving pharmaceutical container sealing.

A frangible syringe cap signals tampering while an integrated RFID tag automates identification and tracking without separate devices.

Learn how pH control and aspartic acid stabilize concentrated terlipressin for pre-filled syringes without refrigeration.

This case integrates a magnifying lens into the dose-setting insert to improve dosage readability and support cost-effective retrofits.

A recessed, water-soluble antimicrobial composition forms a cavity at the male luer to limit microbial ingress into the fluid path.

A flexible label magnifies dose indications through the housing opening, improving readability without redesigning the housing.

Fluorescent dyes in silicone or hydrocarbon oils improve syringe lubricant visibility, layer analysis, and quality control.

A threaded plunger member engages the stopper to preserve sterility, reduce rotation, and avoid silicone oil during insertion.

A gas supply pressurizes the bottle’s unfilled space for smooth powder output, while a check valve and filter protect hygiene.

A movable shield exposes the full needle for vial aspiration, then limits penetration during subcutaneous injection.

A cutout in the energy accumulator compartment provides electronic service access without separating the pump housing shells.

Separate pump modules and automated recirculation maintain fluid homogeneity for accurate multi-fluid delivery at high pressure.

For regional anesthesia, piezochromic color change provides rapid visual pressure feedback below 100 bar without moving or electronic parts.

A segmented, interlocking plunger reduces device footprint and manual force during injection needle extraction, improving handling comfort.

A syringe hub uses a post-and-collar skin contact surface to distribute force and control cannula penetration depth.

A tapered, ribbed collar supports ISO 80369-3 compatibility while limiting misconnections, molding defects, and material waste.

A graduated lubricant layer varies thickness along the receptacle to reduce friction and improve consistency during multi-dose delivery.

A multilayer SiOx, tie, and pH protective coating improves gas and solute barriers while helping plastic vessels resist breakage.

A sensor around the connector measures connector-end dimensions to identify connected medical devices without RFID tags or barcodes.

A plunger-and-needle assembly transfers medication directly from a vial, filtering particulates and limiting bubbles for precise dosing.

Resilient arms and abutment surfaces secure varied medicament containers, reducing device duplication and alignment risks.

A detachable accessory uses timed red, yellow, and green lights to track dosing events and clarify safe administration windows.

A sloped button and conversion mechanism supports air removal and injection while limiting held-area changes and needle shaking.

The case confines lubricant to the stopper-accessible barrel wall, reducing migration into dead space and particle formation.

This case combines a septum priming cap, occlusion alarms, and sensor verification to support reliable infusion pump operation.

A thumb-fastened ring links finger motion to the syringe plunger, improving aspiration and injection control with one hand.

A separate plunger marking avoids piston-shape and Luer-lock obstructions, improving alignment for accurate small-volume dosing.

A two-chamber syringe isolates medical and flush fluids until use, reducing syringe changes, contamination risk, and catheter blockages.

A recessed sealing element and specialized threads improve syringe closure assembly, torque consistency, and contamination control.

Amino-modified layers deliver silicone-oil-free slidability and sealing for syringe rubber seals.

A dedicated KVO tube and full-flow path simplify gravity infusion control while helping maintain catheter patency.

A sealed reservoir, guide groove, and screw-coupled rod help remove gas, limit contamination, and deliver fixed liquid doses accurately.

Separated solid antiseptic and surfactant storage supports stable biofilm rinses.

This case uses syringe sensors, alerts, and data tracking to verify medication and pressure during injection.

Annular steps, bars, and flanges stabilize the safety sleeve against the needle holder, reducing unintended unlocking.

Horizontal syringe filling and a large-bore-to-fine-cannula path support consistent delivery of high-density cells with less blockage.

This syringe connector uses deformable jaws to join injector fasteners, enabling standard syringes and lowering manufacturing costs.

A multi-chamber syringe uses pressure-triggered flow to deliver medication then flush a VAD, reducing connections and contamination risk.

Digital imaging reads syringe markings and plunger position to verify drawn medicinal fluid volume before injection, reducing dosage errors.

A multi-lumen receiver sorts therapeutic particles by size to control delivery rate, dosing, and clogging during endoscopic treatment.

A piston-and-chamber restoring device simplifies solvent mixing while filtering undissolved powder before injection.

A radially expanding balloon and bellows help deliver viscous agents through narrow channels while reducing component stress.

A resilient frame and compressible section reduce injector break loose force while preserving sealing for stored protein formulations.

A radial annular projection and tuned cavity diameters improve syringe needle retention without requiring a more complex cap.