Infusion Syringes TRIZ Cases

Integrated valve male luer lock connector seals syringe outlet via elastic tubular element, preventing fluid contamination during storage.

Collapsible tubing with spring clips or a pinch bar occludes the lumen to prevent vascular trauma during high-pressure access.

A fluid transfer connection uses a pivoting lever to release a screw fit and friction fitting, enabling one-handed disconnection to reduce needlestick injuries.

Hinged actuation arms automatically extend to cover the needle, reducing manufacturing complexity and cost.

An inner wall profile directs fluid into a base accumulation area, enabling complete extraction from medical collection cups.

An oblate spheroid tip cap rights itself to prevent ENFit misconnections and ensure correct syringe orientation.

Elastomeric grommet prevents premature needle retraction and blood spillage in IV catheter introducers.

An integrated plunger circuit generates distinctive light to illuminate electrolytic media within the syringe barrel.

An insoluble porous spacer maintains distance between the stopper and tip, preventing overdosing while avoiding liquid absorption.

Pitched peel lines distribute shearing forces evenly, preventing tearing during vascular introducer sheath separation.

A flush syringe assembly integrates a disinfectant-loaded swab within its distal collar to clean vascular access hubs upon connection.

A venting safety closure uses a luer fitting to transfer fluid specimens into collection containers while maintaining a secure seal.

Plasma treatment of silicone oil coatings prevents drug degradation and maintains gliding properties in sensitive biotech injection devices.

A multi-barrel syringe uses a plunger array to drive individual needles for simultaneous medicament delivery.

A dual chamber syringe uses a manual isolation valve to separate medication and flushing fluids within nested plungers.

Integral plunger stops limit axial displacement to prevent radial barrel expansion, ensuring consistent dosing accuracy across all steps.

A syringe plunger uses a contact portion to decouple top and bottom segments under excessive force.

Predicting in vivo sensor characteristics from fabrication data compensates for manufacturing variability and degradation to improve measurement accuracy.

Packaging constrains syringe plunger movement to prevent stopper displacement caused by high pressure variations during external sterilization.

A medicine administration device uses a grip section to apply strong force during injection.

Periodic features on a syringe plunger rod enable tactile dose monitoring and automatic locking to prevent catastrophic back-flow in hemodialysis.

A prefilled syringe uses a dual internal volume design with a proximal sealant to separate the substance from the environment.

A windowed syringe label uses transparent windows to reveal measurement graduations while displaying attention-grabbing graphics on opaque sections.

A syringe with a retractable plunger rod and protective cap stores medication securely.

A plunger simulation device uses a rotatable component and damping fluid to control injection resistance.

A syringe assembly uses a movable shield to adjust needle exposure length for precise subcutaneous injection.

Rotating a nested-plunger syringe separates blood fractions via centrifugal force, eliminating expensive external equipment.

A plunger limiting mechanism constrains proximal movement within a training device housing to simulate injection operations.

A cross-linked hyaluronic acid hydrogel fills surgical cavities with stable mechanical properties.

Adsorption kinetics within a sealed chamber reach a chemical threshold to indicate elapsed time without batteries.

A finger-grip element with a specific contour design transfers user force to the syringe barrel.

A syringe pump display unit shows graphical representations of mounting states, resolving manual reference burdens during syringe installation.

Optimized trim member geometry minimizes stress concentration to lower gliding forces without lubricants, ensuring consistent injection times.

An elastomeric needle guard uses snap-fit arms to cover the needle tip automatically after insertion.

Adjustable abutment surfaces replace intricate threading to control inner shaft movement, reducing manufacturing complexity and production costs.

Sliding guide rods in the container enable automated cap loading, preventing manual handling that compromises sterility.

Lateral inflow channels in a syringe needle holder route active substance around the plunger to eliminate residual fluid trapped in dead volumes.

Cap device pierces sealed reservoir to prime plunger, enabling portable pump design that reduces component complexity.

PECVD-deposited SiOxCy primer layers modify plastic syringe surface energy to match glass-like properties, resolving inconsistent breakout force profiles.

A syringe barrel features a rotatable element that enables independent rotation of aspiration tools.

Hub lateral penetration path expands cross-sectional area alongside structural engagement recesses to boost flow rate without weakening coupling integrity.

A temporary assembly key prevents unintended extension of the telescoping cartridge gear and pushing nut screw during transit.

Mechanical syringe adapter couples with needle cover guide to align prefilled syringe needle with on-body injector fill port.

A reusable safety syringe trainer uses a dual-diameter plunger flange and spring mechanism to simulate injection actions.

A luer connector assembly uses a soft resilient member to enhance frictional engagement between mating medical device components.

A grip accessory housing guides plunger rods and shields needles via a skin contacting surface.

A disposable injection device mounts a receiving device on the thumb plunger via a detent element arrangement for one-handed aspiration.

Integrated rotating adhesive pad eliminates suture time and infection risk while allowing side tube repositioning.

Selective visual stimuli enhance blood flow to specific brain regions, enabling targeted drug delivery while minimizing side effects on non-target areas.

Nested tapered inner and outer bodies resolve diameter versus protection trade-offs in medicament delivery devices.