Automatic Syringes TRIZ Cases

Flexible arms in the syringe holder adapt to the flange to stabilize position while reducing assembly complexity.

A medicament delivery subassembly uses a non-contact sensor to activate an electrical engine for precise drug expulsion.

A box-shaped medical fluid injector uses a detachable cover with two-step engagement to seal the housing.

A spring-loaded autoinjector drive assembly automatically advances a plunger to dispense medicament without manual force.

Flexible adhesive skirt stabilizes pen injector during extended bolus delivery, reducing skin deformation and ensuring accurate subcutaneous needle positioning.

Dual-threaded drive rods convert rotation to axial motion, resolving dose precision and reliability trade-offs in drug delivery devices.

Flexible ratchet teeth enable easy assembly while a nested striker mechanism produces clear audio signals for viscous medicament delivery.

Add-on module with force sensor measures axial injection forces to ensure accurate process monitoring without increasing device complexity.

An injection device uses a biased indicator element that impacts an abutment to provide multi-sensory completion feedback without draining main drive energy.

A releasable latch mechanism allows users to control needle dwell time, preventing medicament loss through siphoning during injection.

Localized heating of tissue adjacent to the injection site accelerates insulin absorption while preventing drug degradation from overheating.

A liquid administration device restricts cover member movement to prevent premature needle exposure.

Asymmetric coding features on the syringe flange prevent incorrect insertion into the auto-injector housing, ensuring safe medication delivery.

Segmented safety caps cover rear openings during actuation preparation, preventing user confusion about injection orientation in emergency medical use.

A data collection device uses an optical sensor to detect rotation of outward radial protrusions on a medicament dose setting dial.

An injectable polycaprolactone composition with polydopamine adhesive enables in-situ foaming for bone defect filling.

Direct plunger measurement eliminates mechanical tolerance stack-up errors from motor and gear train components.

A medicament delivery device uses a blocking member to prevent accidental needle exposure during actuation.

A needle protection sleeve shifts proximally to tension a spring, triggering product dispensing in an auto-injector housing.

A single compression spring drives needle insertion, dose delivery, and safe retraction via a decoupling shroud to eliminate complex multi-spring mechanisms.

High viscosity damping fluid compensates for tolerance stack-ups to ensure complete discharge without fine manufacturing tolerances.

A connector receives a vial and drives a piston to draw fluid into the syringe, enabling home injection without manual transfer.

A smart insulin pen system uses image recognition to estimate meal carbohydrates and calculate precise dosing recommendations.

Coaxial integrity lock mechanism in removable cap assembly prevents accidental activation and recapping to maintain sterility.

Adjustable driver uses spring and brake to deliver constant force for syringe plunger movement, accommodating different sizes.

Piezoelectric actuator drives plunger via consecutive steps, overcoming coil-spring force limits for high-viscosity formulations.

Segmented springs distribute force during needle insertion and medicament expulsion to reduce user discomfort from high impact.

A cap with inwardly extending barbs engages a rubber needle shield, allowing simultaneous removal from the syringe and improving user comfort.

Elastic cover part changes shape in response to air pressure during priming, preventing backflow and contamination without complex valves.

A drug delivery electronic system uses a movable member to trigger power state changes.

A passive needle guard remains retracted during drug mixing and deploys a shield after injection.

Torsion spring mechanism stores energy during dose setting to drive automatic injection in medical devices.

A pre-filled vial assembly integrates a transitionable stopper and regulator for controlled fluid dispensing.

Attachable identification module with mechanical and electrical keying elements secures medicament delivery devices against unauthorized use.

Adhesive base with flexible skirt prevents skin deformation and maintains needle positioning accuracy during extended bolus delivery.

A syringe system uses a vacuum chamber and piston to regulate fluid delivery rate through pressure differentials.

Angled slot in closure member forces twisting motion during axial pull, breaking frangible joint to ensure correct boot removal sequence.

Selective force transmission via a drive coupling protects the syringe rear flange from breakage during high-force viscous liquid dispensing.

Dual gripping sets in one remover body handle rigid and flexible needle shields, reducing device complexity and user injury risk.

A hollow sleeve guides needle insertion while a spacer arrangement maintains the piston plunger in an initial position until full deployment.

Segmented autoinjector assembly uses interchangeable drug capsules with a reusable driver unit to deliver multiple medications in combat environments.

A compact fluid dispenser uses a spring-loaded piston to move medicaments from collapsible containers.

Axially sliding sleeve covers needle tip after use, preventing reuse and infection risk.

A reusable injection drive mechanism secures a syringe via an expandable latching sleeve that releases the plunger upon screwing.

A medical delivery device uses a threaded rod mechanism to enable precise liquid dosing.

A torsion spring dial-down mechanism strains and releases energy via cam keys to adjust wind-up pen doses.

Cam rotation disengages a plunger retainer lever to unlock the injection rod, reducing activation steps while maintaining safety.

Asymmetric ramp clips prevent cap reattachment, eliminating cross-contamination risks from reused sterile devices.

A drug delivery device uses a releasable one-way ratchet mechanism to adjust the set dose by rotating the dose setting member.