Automatic Syringes TRIZ Cases

A hand-actuated syringe uses a vacuum chamber to retract the plunger and draw fluid from a reservoir.

Visual or auditory cues from a feedback indicator allow users to maintain proper force and orientation without constantly observing the viewing window.

A blocking wall prevents radial flexing of a sleeve finger, stopping accidental disengagement of the plunger holder under high axial biasing force.

A non-numerical display uses a movable indicator element to provide visual and tactile feedback during dose setting.

A needle hub engages a hypodermic needle and supports a shield that moves axially without rotation to cover the tip.

An injection device uses a dynamic depth modifying element to accommodate varying fat layers and user needs without increasing structural complexity.

Segmented springs handle needle insertion and medicament injection, resolving force variation needs without complex variable mechanisms.

An injection device acoustic signal generator customizes alert properties using environmental noise detection.

A medicament delivery package assembly uses a motion sensor to detect storage unit door openings for automated user notifications.

An active triggering withdrawal mechanism allows user-controlled needle retraction upon device removal from the injection site.

A telescoping assembly secures components via a resistance element, preventing unintended extension from vibrations.

Integrated cap removes needle shield to reduce component count and manufacturing cost.

A syringe uses a detachable adjustment element with a guide groove to set piston rod stroke positions for precise injection volume control.

A light source and detector use the fluid container barrel wall as an optical waveguide to determine plunger axial position.

A drug delivery device uses a reversible thermochromic sensor to detect medicament temperature changes on the container surface.

Vertical stacking and nested components resolve housing length constraints while the grip portion minimizes adhesive use.

A flexible hook engages a locking member to prevent premature activation, ensuring safe mixing of unstable medicaments.

A trigger assembly uses camming surfaces to release a biased element via rotational motion.

A locking mechanism releases a reaction component driven by a drive spring to generate an audible click upon plunger activation.

Segmented load paths via resilient arms prevent wet injection leakage by decoupling the stopper until full needle insertion.

A compact fluid dispenser uses a constant force spring to drive uniform medicament flow from a collapsible reservoir.

Automated reconstitution system uses time-varying acceleration to mix medicament components within a reusable auto injector housing.

Modular needle cover and spring mechanisms resolve conflicting requirements for accurate resistance simulation and device complexity.

A safety insulin pen needle integrates a trigger protector with elastic clamping jaws to secure the device structure.

A locking mechanism secures a syringe within an auto-injection device housing until the protective boot is removed.

Blocking means prevent proximal movement of the medical container during drops, avoiding inadvertent activation triggered by small round flanges.

Non-self-locking threads allow zero-point adjustment during manufacturing, eliminating air gaps and drug wastage.

A telescopic plunger assembly provides audible and tactile injection completion feedback within a compact housing.

A dry gelatin powder forms a hydrogel upon blood contact, enabling precise topical application via a spring-loaded delivery device.

Segmentation separates reusable electronics from disposable delivery devices, while asymmetric keying ensures reliable connection and prevents mismatch errors.

A locking mechanism prevents syringe ejection by engaging a dual-port protrusion until intentional actuation, resolving drive spring force conflicts.

Segmented piston rods and helical tubes resolve contradictions between axial movement for dose release and rotational constraints for reliability.

Automated robotic arm positions a delivery device to puncture skin and inject therapeutic substances into targeted tissue layers.

An arcuate roller driven by a spiral spring reduces friction against a flexible reservoir wall, enabling consistent large-volume dosing without manual priming.

A fluid chamber with a restricted outlet triggers an indicator after a set volume passes, providing delayed user feedback.

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Rack and pinion transmission replaces springs to prevent jamming during automatic medicament delivery in emergency syringe systems.

Segmented resilient fingers manage spring force and prevent trigger deformation during actuation.

A removable dose detection module tracks medication delivery via a rotation sensor, eliminating manual tracking errors.

Electronic detection means replace mechanical indicators in an injection device, resolving measurement precision issues while maintaining compact volume.

A drug delivery device assembly uses a removable first button member to actuate the drive mechanism for accurate medicinal product dispensing.

A rotating cam deflects flexible arms to release the plunger rod, simplifying the activation sequence for emergency medical use.