Ampoule Syringes TRIZ Cases

A drug delivery assembly converts dose setting rotation into axial activation movement via a nested mechanical design.

Curved needle guide surfaces and friction regions constrain plunger motion, preventing seal material coring that blocks the orifice.

A retractable syringe plunger uses a spring to drive needle retraction after injection.

A pre-filled syringe maintains medication stability through an inert gas environment and oxygen barrier pouch.

A single compression spring drives needle insertion and medicament delivery, using sequenced operation to improve safety without complicating user interaction.

A rotatable plunger graft tissue injector transforms rotational motion into controlled linear advancement for precise aspiration and delivery.

Consistent markings on housing and cartridges resolve visibility loss when components load, preventing medication mix-ups.

A drug delivery drive mechanism uses a unidirectional rotational system to enable precise dosing.

A mechanical injection device sets a predetermined dose automatically when the protective cap mounts or dismounts.

Spring-loaded plunger drives automatic needle retraction into the barrel, preventing blood spattering and ensuring complete dosing.

Segmented monitoring sensors track medication usage data while preventing outlet obstruction and reducing user burden during drug dispensing.

Segmented barrier layers block light transmission to maintain medication stability while preserving visibility.

Segmented stop elements and a locking member resolve the contradiction between dosing precision and resetting ease in medication delivery devices.

Silicone rubber seal cap with lubricant prevents needle adhesion, reducing piercing resistance while maintaining sterilization efficacy.

A telescoping connector assembly adjusts axially to maintain stopper position within a drug delivery cartridge.

Tuning sensor thresholds in drug delivery devices using a reference calibration factor to resolve manufacturing tolerance variations.

Integrated elastic tab secures cartridge within housing, eliminating external brackets and reducing breakage risk.

Axial cartridge holder retraction provides visual filling level indication, eliminating separate last dose limiting members to reduce device complexity.

A modular auto-injector uses a biased needle guard to cover the injection needle and an indicator system to track plunger position.

A medication delivery device employs a threaded piston rod and reset element to automate cartridge replacement operations.

A packaged medicine container uses dual oxygen scavengers to rapidly remove and continuously maintain a low-oxygen atmosphere.

A sensor assembly with a mechanical interface attaches to injection devices to detect component movement and transmit data wirelessly.

Segmented compartments enable on-site reconstitution of lyophilized vaccines, eliminating contamination risks from multi-dose handling.

A mechanical doorstop system prevents premature locking in portable drug delivery devices until the medicine cartridge is inserted.

Gradual diameter transition reduces velocity changes, preventing solid particle separation in drug suspensions.

A pivotable cartridge holder automates needle insertion via a pre-stressed spring mechanism.

A snap and pierce connector holds a needle in registry with a vial septum to prevent leaks during sterile filling.

A piercing tip with a convexly curved shell surface establishes a consistent flow connection for fluid discharge.

A computer-controlled injector uses a mechanical latch to lock the pivot mount element for secure cartridge alignment.

A lead-free glass frit coating on a borosilicate syringe cone matches thermal expansion to prevent cracking while maintaining chemical resistance.

Force sensors in insulin pens measure applied pressure to guide needle insertion depth through real-time visual and auditory feedback indicators.

A seal cap formed from a thermoplastic elastomer composition prevents adhesion to the cyclic polyolefin barrel.

A plunger assembly locks against displacement unless the syringe outlet engages a vial adaptor or injection site, preventing unintended fluid release.

Spring mechanism tensions between injection sleeve and housing to enable automatic dose ejection, reducing manual operator effort during administration.

A fixing structure with a limiting ring and elastic support secures the bottle body against lateral swaying.

A pen injector drives its cartridge into the housing to reduce length.

A variable friction element wedges between a drug reservoir and housing to inhibit plunger rotation.

A segmented reservoir design enables self-service refilling, reducing device complexity while maintaining reliable subcutaneous delivery.

A segmented opaque housing with a plunger extender conceals identifying features of syringes and vials, eliminating supplier bias in blind clinical trials.

A piston rod uses a spring element and snap arms to maintain exact axial position within the injection device housing.

Segmented sleeve and plunger design minimizes residual liquid while maintaining easy injection molding manufacture.

A needleless syringe pre-fills the flow passage with injection substance to mitigate nozzle load and reduce noise during discharge.

A roller mechanism expels medicant from a flexible container, reducing device complexity and manufacturing cost compared to rigid syringes.

A pen needle hub employs a ramped surface and protrusion to provide tactile feedback, preventing under- or over-torquing errors.

A spacer between cap and housing prevents flexible structure creep to ensure needle safety.

Integrating holding arms into the drive member eliminates separate plastic springs, reducing component count while maintaining precise dosing stability.

A collapsible plunger rod triggers needle retraction upon injection completion.

Segmented barrel design resolves dosage accuracy versus manufacturing complexity trade-offs in aseptic prefilled syringes.

Segmented storage prevents premature mixing of dry and liquid components, extending shelf-life while ensuring immediate readiness for injection.

Nested spring mechanisms reduce device weight and volume while maintaining reliable medication administration in emergency situations.