Ampoule Syringes TRIZ Cases

A drive clutch isolates the plunger element from the spring until dose delivery initiates.

Rotating collar selects and locks precise medication dosages, resolving the trade-off between dosage accuracy and device complexity.

A syringe plunger assembly uses a secured actuator and spacer system to deliver precise therapeutic doses in emergency overdose scenarios.

An indicator mechanism on the drive member provides visual confirmation of spring tensioning, resolving user uncertainty about proper handling steps.

A reusable auto-injector front-end device uses opposite screw threads to simplify assembly and reduce user error.

Auto injector cassette integrates a pivotally attached rigid needle shield remover mechanism within the drive module housing.

Electronically tagged cartridges enable a self-injection device to automatically regulate dosage and timing, resolving patient compliance monitoring challenges.

An intermediary silicone oil layer prevents hydrogen peroxide decomposition in standard syringes, eliminating the need for immediate bedside mixing.

A chemical applicator uses piercing elements coated with a reservoir to deliver substances directly into internal plant tissues.

Funnel-shaped membrane reduces friction between elastomer and glass reservoir, eliminating lubrication needs for efficient gas-driven injection.

A supplemental device uses two camera sensors to capture insulin dosage information from injection devices.

Aligning the drive shaft with the plunger rod eliminates offset-induced glass tube cracking while simplifying the drive mechanism.

A medication delivery device resets its piston rod automatically during cartridge insertion without manual user interaction.

Deformed sheet metal plunger rods prevent plastic creep and breakage in autoinjectors by using out-of-plane surfaces to lock against housing retaining features.

A piston rod assembly fixes its length via ratchet teeth or lead screw mechanisms, eliminating priming operations and ensuring accurate first dose delivery.

Automated mixing mechanism prevents incomplete blending during emergency injection.

A self-contained injection capsule delivers medication automatically via an internal needle mechanism.

Gravitational force drives the piston rod through a screw thread system to reset the device, eliminating manual intervention during cartridge refilling.

Segmented carpule mixing sodium bicarbonate with anesthetic reduces injection pain and accelerates onset without requiring complex manufacturing precision.

A bi-directional dose setting module uses tactile feedback to enable non-visual dose adjustment in medical injection systems.

An actuator switches a sterile reservoir between storage and delivery states, reducing preparation time and contamination risk.

A deflectable retention feature in the needle hub allows automatic cartridge advancement and needle piercing, preventing clogging from long-term storage.

A wearable patch prepares injection sites with pain management and tracks usage data for reliable self-administration.

Segmented shaft and power transmission prevent locking during forward movement while allowing easy return for cartridge replacement.

A medicament delivery device uses a delay mechanism with resilient elements to ensure complete dose administration.

A motor drives a piston in a pull-out direction to mechanically open a cartridge holder, resolving user difficulty with manual eject buttons.

A safety syringe retracts its needle into the body using a spring-loaded stopper and plunger assembly.

Segmented rod connector with retaining tongues simplifies manufacturing while ensuring reliable plunger rod retention.

Rotatable cap releases pre-stressed springs to move the needle carrier axially, eliminating manual needle attachment steps for patients with limited dexterity.

Replacing multiple springs with a cam and ratchet mechanism eliminates stress-induced mechanical failure while maintaining reliable plunger rod engagement.

Segmented collet prevents cartridge deformation under pressure by distributing force uniformly across the wall.

A supplementary device locks a medicament delivery button in a retracted position until mounting.

A needle guard activates a microprocessor-controlled dose injecting mechanism to administer precise medicament volumes without manual button operation.

An electronic control unit switches a drug delivery device from low to high power based on relative component movement.

A rotating cam mechanism converts user input into controlled reciprocating plunger motion, preventing premature firing while ensuring dose accuracy.

A plunger rod projection moves through a housing display window to provide visual feedback on injection progress.

A threaded injection device uses a ratcheting mechanism to convert rotation into precise axial dosing movement.

An injection device merges the dosing element and drive member to eliminate complex mechanical couplings while enabling reliable dose reset.

A medical dispensing device uses a trigger and engager system to overpressurize the reservoir for viscous substance delivery.

A septum piercing mechanism uses a biasing member to move a needle support toward a drug container, establishing fluid communication.

Porous plastic end cap equalizes pressure in an auto-injection syringe, maintaining sterility while simplifying assembly complexity.

Deformable members sandwich the cap to immobilize the cartridge, reducing fluid loss during needle insertion.

A rotatable cam moves a protective cap linearly to extract a needle sheath from a syringe.

A dual injection device uses micro-reservoirs to store and deliver preset doses of secondary medication alongside primary insulin therapy.

A hold detent mechanism engages with a needle shroud to create opposing force against a control spring during drug delivery.

A cartridge holder uses a rotating second cooperating component to drive plunger movement within an injection assembly.

Shield cap seals male luer fitting channel and outer surface, preventing leakage and external contamination during handling.

A syringe assembly uses a frangible plunger connection and barrel locking element to automatically disable after use.

A multi-port needle injects fluid into a vial to mix with particulate material and receives the resulting mixture.

A grip-actuated injection device amplifies hand squeezing force to pressurize and discharge high-viscosity medications through a hypodermic needle.