Infusion Syringes TRIZ Cases

Segmented cartridge holder reduces dispensing force while a mechanical limiter prevents overdosing and dual displays ensure accuracy.

Segmented plunger rods rotate to align with the syringe barrel, shrinking packaging volume while maintaining stopper engagement.

A hydrophilic barrel inner surface paired with a fluoropolymer-coated stopper reduces break loose force and glide variation in medical delivery devices.

Segmented pressure zones decouple inlet vapor pressure from pump mechanics, eliminating tubing deformation errors and calibration time.

A gravity-driven stop member disengages from a rotating drive assembly to enable manual resetting of medication delivery devices.

A manually operated instrument uses a threaded shaft and grip nut to convert rotary motion into linear plunger movement for filling syringes.

Segmented locking discs and asymmetric tabs resolve loading misalignment by guiding the plunger rod through clearance holes for reliable engagement.

A convertible plunger uses segmented sealing sections to maintain gas-tight storage integrity while enabling low-force dispensing.

Integrating the pump inside a disposable canister improves maintenance accessibility while maintaining structural stability for mobile wound treatment.

Dynamic sleeve deformation creates flow channels around the cuff in the final position, enabling sequential dispensing without mixing.

Antiseptic cap employs ribbed design to prevent rotation, reducing infection and occlusion risks in catheter systems.

Reducing the silicone layer thickness prevents protein destabilization while maintaining smooth plunger travel.

A medicament delivery device uses a plunger rod with visual indicators moving past exterior instruction signs to guide user operation.

A sealed tissue collection vessel integrates a filter system to separate fat cells from fluids within a single closed apparatus.

A collapsible plunger uncouples under excess force to activate a spring-driven retraction mechanism for complete needle retreat.

A heat-shrinkable film covers an injection device container and adaptor to maintain secure rotational and translational fixation.

An expandable guidewire segment locks onto a catheter to enhance pushability through tortuous vessels.

A prefilled syringe cap uses a ring portion between a reduced diameter section and lock adapter to distribute external forces.

Curved cannulas with internal ribbing maintain lumen patency by resisting kinking under insertion stress.

Elastomeric thread cover deforms to fill thread gaps, preventing pathogen ingress and maintaining catheter sterility.

Segmented tip cap with asymmetric connector prevents misconnections while pivot enables hands-free assembly.

Segmented needle shield assembly uses a gas-permeable outer layer for sterilization and an impermeable cover to block oxygen ingress.

Nested flexible inner body seals needle orifice while control ring moves protective flaps, resolving sealing reliability versus device complexity.

A prefilled syringe outer cylinder features a distal cylindrical part with a uniform diameter for smooth packaging withdrawal.

A dual chamber applicator uses an alignment fixture and piston insert to provide a stable gripping surface for synchronized component delivery.

Segmented pushrod transitions from curved to straight configuration, reducing pump housing volume while maintaining dispensing reliability.

A needle tip guard uses segmented clamp members to enclose the sharp point.

A press-down valve employs a catch mechanism to lock the stem open, resolving cleaning difficulties caused by spring-loaded closure.

A cannula insertion apparatus uses a plunger to create suction, drawing blood into a transparent hub for immediate visual confirmation of needle penetration.

Collapsible bulb coupled to vented syringe adapter displaces trapped air, enabling gravity infusion and simplifying IV set priming workflows.

A syringe adaptor positions the plunger perpendicular to the needle axis.

Pneumatic pistons apply varying forces to syringe plungers for automated sequential solution injection, preventing catheter clotting and contamination risks.

A prefilled syringe assembly uses a barrel chamber to isolate contents from sterilization gases.

Segmented components prevent unauthorized access while maintaining sterility during non-use periods.

A non-vented syringe uses a balloon gas reservoir to capture displaced fluid and maintain constant internal pressure.

An electric injection device uses a motor-driven gear mechanism to actuate a syringe plunger with high precision.

Magnetic coupling transmits plunger motion to a control unit, resolving information loss about injection progress without adding rigid mechanical complexity.

Symmetric structural features on the tubular body allow the removal device to engage the cap regardless of orientation, reducing bulk handling time.

Wave springs replace bulky helical coils to generate sufficient spring force in compact injection pens without excessive volume occupation.

A catheter purging device generates controlled turbulent flow pulses to clear internal residues without clinician technique.

A tubular radiation-protection device uses a tenon-mortise mechanism and retractable locking ring to secure a transparent shield.

Segmented needle guides minimize liquid dead volume and contamination risks while enabling efficient simultaneous delivery of multiple therapeutic agents.

A plunger seal uses an expandable core to adjust its normal force against the cartridge wall.

Retracting a plunger rod inside a syringe barrel reduces packaging volume while maintaining uniform outer surfaces for efficient stacking.

A perimeter fill syringe uses a wider barrel and distinct cross-sectional shapes to improve gripability and marking visibility.

A spring steel wireform shifts position upon detachment to block reuse, preventing contamination in drug delivery systems.

An elastic stopper hook automatically engages a plunger tooth portion to prevent contamination from spillage while allowing easy manual filling.

Asymmetric mechanical coding on housing components prevents incorrect medicament loading in injection devices.

A removable dose control device uses magnetic field detection to track selected doses on injectable drug delivery bodies.

A plunger rod stop limits the dispensing stroke to prevent therapeutic product waste during air removal.