Automatic Syringes TRIZ Cases

A movable indicator member shifts between visible and non-visible positions to signal dose administration status on a medication injection pen.

Segmented needles apply high DC voltage to create temporary membrane holes, improving permeation rates for hydrophilic drugs.

A locking mechanism between a syringe carrier and an end cap prevents forward movement during needle shield removal.

A removable preventing member blocks drug delivery device operation until removal, resolving priming uncertainty and ensuring accurate dosing.

Segmenting the movable element into distinct sliding portions resolves structural stability issues when using inexpensive plastic materials.

Integrated side buttons release safety locks for one-handed epinephrine injection, resolving two-hand operation constraints in pediatric devices.

Axial switch lock member powers communication units, resolving incomplete dose absorption and patient convenience trade-offs.

Segmented dose indicating wheels provide clear numerical display for visually impaired users while maintaining a compact device volume.

Integrating the coupling function into the plunger carrier recess eliminates separate transfer instruments that wear out or get stuck during operation.

Segmenting the cover into separate components simplifies manufacturing while enabling customization of injection depths.

Dosing mechanism detects dispensing mode via indicating element position, resolving ambiguity between dialing and dispensing states for reliable operation.

Stepped threads in the nut sector produce audible end-of-dose indicators, ensuring complete delivery of viscous protein therapeutics.

Motor-driven lead screws reduce injection force for precise dosing of dermal fillers and fat grafts.

Accessory drive reduces user force during dose dispensing while mechanical feedback maintains operational reliability and accurate dose indication.

Segmentation separates the reservoir from the injection mechanism, enabling high viscosity drug delivery while monitoring physiological data.

Delay mechanism activates subsystems before medicament delivery completes, preventing premature needle withdrawal and ensuring accurate end-of-dose indication.

Radially flexible arms wedge between the cover and housing to restrict axial displacement, preventing accidental medicament expulsion during mechanical shock.

Asymmetric ratchet teeth reduce user torque for dose reduction, resolving the trade-off between ease of operation and clutch complexity.

An integrated safety lock prevents unwanted activation by blocking rotor rotation, resolving complexity and reliability trade-offs.

A pharmaceutical injection device uses a slide motor to position a syringe for identification code reading.

A fluid delivery device uses detectors to read machine-readable indicators on removable cartridges for precise metered dosing.

A fluid control valve uses a sliding member to isolate inlet pressures and enable turbulent mixing of fluids.

A detent mechanism decouples chassis and carrier springs in auto-injectors to enable controlled needle insertion.

A medical device uses a capacitive sensor to detect protective film removal and trigger injection functions automatically.

Barbed engagement mechanism reduces finger force required to remove needle caps, improving usability for patients with joint pain.

A multi-needle spinal drug delivery system uses a port multiplier to distribute medication through guided needles.

Segmentation of a blocking ring and spherical element resolves reliability versus ease of operation in autoinjectors.

A locking clip blocks a plunger rod until a needle shield retracts, preventing premature injection and ensuring proper insertion depth.

A cap housing sub-assembly uses a visible labyrinth and protrusion to guide user detachment.

A single compression spring drives needle insertion and retraction, preventing incomplete dose delivery during interrupted injections.