Automatic Syringes TRIZ Cases

A rotating collar absorbs excess drive force during injection, reducing skin bruising while preserving a compact single-drive mechanism.

Angled alignment and textured gripping sections accommodate varied injector shapes for stable positioning and accurate ISO 11608-5 testing.

An activation sleeve preserves plunger locking for high-force medicament delivery.

A resilient force member stores and releases energy to signal dose completion, avoiding bulky indicators in drug delivery devices.

Telescopic inner and outer sleeves combine shield retraction with delivery, giving patients distinct tactile and color-based actuation cues.

On-demand gas generation replaces bulky springs, enabling compact delivery of high-viscosity protein therapeutics with needle retraction.

A flexible or breakable element cooperates with the piston rod and housing to signal injection completion without complex electronics.

This case shows how a pen needle adapter pierces and guides sterility barriers away, preserving connection integrity during access.

This auto-injector uses one preloaded spring to complete dosing and retract the needle while reducing hand force and part count.

Axial needle-cover movement re-engages the latch, allowing pause-and-resume delivery when discomfort threatens dose completion.

A connectable electronic module uses photo-reflector and time-of-flight sensing to monitor injection progress and guide users.

A nested sensor and controller detect angular displacement to record delivered medication without manual tracking.

A click arm integrated with the drive chassis creates audible end-of-dose feedback while reducing parts, assembly complexity, and volume.

A force reduction member absorbs impact energy between the autoinjector body and syringe, reducing peak forces and damage risk.

A removable safety cap blocks inadvertent activation during device handling.

A movable housing portion primes the delivery mechanism, releasing the actuator only after deliberate preparation for safer use.

A staple or annular-disc connector secures varied needle shields for axial removal, simpler assembly, and maintained sterility.

A plunger detector drives repeating visual signals until dose delivery ends, helping reduce leakage and incomplete administration.

Light and motion sensors activate step-specific visual cues on medication devices, helping users follow delivery instructions more clearly.

A wider base limits insertion depth, reduces skin compression, and helps prevent needle bending.

Integrated lights respond to force and sensor states, helping patients follow injection steps and complete the dose.

An active drive releases a blocked slider only on command, improving impact resistance and reducing accidental needle insertion.

Recesses keep plastic locking elements relaxed during storage, preserving guard locking and medicament member coverage after aging.

A single inductive sensor tracks two-way component movement in disposable injection devices without major device redesign.

This syringe uses a locking assembly and stored biasing force to expel fluid, reduce manual effort, and limit reuse.

A rotating and translating plunger with a cam follower manages spring force for viscous-drug delivery while reducing force transmission.

A guided drive tube and retention structure prevent connector motion during dosing, supporting complete fixed-dose delivery.

A locking shield coordinates fixed-dose delivery with spring reset, helping prevent accidental activation and double dosing.

Sequential ratchet configurations dispense multiple doses, helping complete delivery despite discomfort and premature device removal.

This cap uses a movable plug to restore clamp position, improving needle-shield removal and simplifying autoinjector assembly.

Staged disengagement separates the power source from the plunger assembly, supporting complete delivery and safe needle retraction.

A transfer member and drive-slot linkage sequence needle deployment only after positioning, reducing stick injuries and medicament waste.

A non-contact magnetic plunger drive replaces compression springs to manage dispensing force across medicament viscosities.

This case uses a movable holding element to engage a needle-cover aperture, reducing hand force and supporting complete medicament delivery.

A flexing hold device stabilizes medicament delivery by counteracting needle-cover force and reducing the user's holding effort.

A control spring guides needle insertion and retraction while a drive spring delivers viscous medication reliably.

Learn how adjustable friction braking controls plunger speed as spring force decays, supporting consistent delivery and patient comfort.

A control spring manages needle insertion while a separate drive spring delivers viscous medicaments without high triggering impact.

A torque spring, damper, and filter coordinate to reduce abrupt plunger contact, drug shear, and particle contamination.

A control spring manages needle motion while a drive spring delivers viscous medicaments, reducing impact and incomplete dosing.

Sensors wake injection electronics during use, conserving energy during storage.

An actuation element drives a blocking element along an inclined surface to stabilize injection and support complete medicament delivery.

This case uses keyed attachment to add dose monitoring and communication without integrating costly complexity into the delivery device.

A plunger rod uses separate control and drive springs to manage needle motion, reduce discomfort, and deliver high-viscosity doses reliably.

This autoinjector uses a cam-driven lock ring to release the plunger during needle-cover retraction, reducing impact sensitivity and creep.

Ultrasonic port sensing and user feedback simplify accurate access while helping reduce contamination and medication risks.

A sliding needle guard unlocks palm-activated delivery, then shields the needle to reduce puncture risk and confirm completion audibly.

A biased plunger, latch, needle sleeve, and switch provide controlled dispensing, real-time feedback, and usage data logging.

A pressurized injector exceeds 83.3 µL/s to enhance endocytosis while a thin ejection part helps limit tissue damage.

A modular training device mimics cap twisting, trigger activation, clicks, and lockout feedback for repeated autoinjector practice.