Ampoule Syringes TRIZ Cases

A multi-stage drug delivery system uses two plungers to store and dispense separate medications through a single cannula.

Piston rod symbols visible through a housing window aperture provide clear dosage information to users.

Color-changing indicators and machine-readable codes on a drug delivery assembly enable rapid assessment of used versus unused conditions.

Threaded adapter guides piston along spiral path to eliminate slipstick friction and ensure precise dosing.

A medicated module delivers two medicaments simultaneously through one needle, resolving the contradiction between dosing flexibility and device complexity.

A non-plastic wave spring maintains cartridge position in a drug delivery device, preventing spindle contact with the bung that causes dose inaccuracies.

A drug delivery assembly uses a radially moveable stop member to interlock with an interaction member on the drive mechanism.

A spring-loaded ram and needle guard interact to expose the injection needle while providing immediate post-use protection.

Segmenting the syringe into a rigid barrel and flexible bladder reduces manufacturing costs while maintaining operational ease through intermediary sealing.

Single-piece molded elastomeric body embeds electronics to resolve complexity and durability trade-offs in smart drug delivery.

Rearranging a threaded nut element compensates for manufacturing tolerances to eliminate initial axial clearance between the piston rod and cartridge piston.

Rotatable encoded member with conductive tracks enables precise dose setting via sensor detection, resolving manual adjustment errors.

Integrating the indicator into the cartridge eliminates separate modules, reducing device complexity while providing redundant status visibility.

Electronic circuit system in medicament delivery device produces audible instructions via integrated speaker.

Telescoping chambers separate dry and liquid medication for extended shelf-life, while a tensile force triggers automatic mixing before delivery.

Adjustable angled needle geometry reduces extrusion force for viscous dermal fillers while improving placement precision.

Vacuum pressure draws monomer through powder to eliminate air bubbles trapped during manual spatula mixing.

Grooves in the barrel interior wall permit fluid bypass during vacuum enclosure, advancing the piston to minimize headspace volume and prevent retraction.

Spring-loaded shields retract and lock automatically after injection, preventing accidental needle sticks and reuse.

Contoured adjustment member eliminates axial clearance between piston rod and cartridge piston, ensuring consistent dose accuracy without manual priming.

Laser modifies glass substrate to embed indelible identification codes, preventing fraud while maintaining impact strength.

A syringe cover device uses a radial seal to protect the puncture area from contamination.

Exposing glass barrels to water and saturated steam removes silicone oil, preventing medicament degradation while maintaining seal integrity.

An elastic packing in the female syringe barrel absorbs torque to prevent structural deformation while maintaining liquid tightness.

Resilient arms hold the cartridge away from the needle to prevent clogging during storage.

A movable member and valve system enable compressed gas delivery in a compact auto-injector design.

A twist-breakable cap system with snap-fastening lugs secures a breakable stopper to the syringe tip.

An asymmetric geometric coding system on the housing component prevents incorrect loading of standard-sized cartridges while maintaining reliable fixation.

A drug delivery device synchronizes dose settings via a collar and linkage mechanism, resolving stability and operation trade-offs for multi-agent therapy.

Segmenting the plunger tip prevents re-use by permanently blocking the needleless injector orifice, resolving reliability and ease-of-operation trade-offs.

Rotatable dial with conductive strips and bridging contacts generates alternating electrical signals for electronic dose detection.

A drug reconstitution system uses a sequential adapter and plunger rod latch to mix substances safely.

An integrated elastomeric activator merges sealing and isolation functions to eliminate assembly costs while maintaining sterility.

A dual-cartridge syringe uses a ratchet plunger assembly to coextrude adipose tissue and additives through a mixing tip.

Segmented power supply reduces device volume while maintaining continuous operation through intermediary charging.

A pharmaceutical injection device integrates a hinged cover on the main body case to secure the needle mounting portion.

A drug delivery assembly uses a clutch member and stop member to mechanically constrain dose setting displacement.

Merged slitter mechanism removes elongate tubular member without displacing medical instrument, reducing device complexity.

A stylet needle with a depth limiter mechanism ensures precise bone marrow penetration for rapid fluid delivery.

A dose setting mechanism uses a floating spline and snap element to enable fractional predetermined fixed doses.

A fixed dose injection device uses a rotating tubular member to set and eject liquid drug doses.

A clamp lug engages a recess in the insert to lock the window element within the pen-type injector housing aperture.

Cantilever locking tabs in a self-activating injection device prevent accidental needle sticks by maintaining sterility until the plunger assembly engages.

Segmenting the housing from the disposable cartridge reduces production cost while maintaining sterile medicine delivery reliability.

A recessed fastener on an injection device housing provides a mechanical interface for attaching supplementary devices without modifying the main structure.

Segmented reservoir accumulation surface captures settling solids away from the needle, preventing clogging and ensuring consistent suspension delivery.

Ratchet latching locks slideable shield over needle to prevent injury while maintaining simple manual operation.

A supplementary device uses a non-contact sensor to monitor drug delivery components, preventing underdosing and needle clogging.

A packaging assembly uses a lid sensor to detect door openings and trigger audio or visual cues for medication reminders.