Infusion Syringes TRIZ Cases

An injection system integrates storage compartments to house medications, reducing assembly time while maintaining portability.

A portable negative pressure wound therapy pump uses flow rate sensing to maintain precise suction.

Positioning the actuation element laterally on the housing improves user access and manufacturing simplicity while maintaining a compact structure.

A drug delivery device locking system uses a releasable interface to block accidental decrement rotation of the movable member.

A filter needle hub integrates a porous PTFE membrane to secure fluid pathways while blocking particulate contaminants.

Slotless tubular guard with anchor strip captures extended wings to prevent leakage during hemodialysis needle flipping.

Segmented inner and outer housings rotate to expose the needle, preventing stick injuries without complex mechanisms.

Segmented plunger rods telescope into nested sections to compress storage volume by 70% while maintaining operational length and readability.

A torque limiting closure assembly uses a stop member and flow restrictor to secure medical connectors.

Nesting a coiled band drive inside the reservoir minimizes patch pump length while maintaining biocompatibility through non-contact fluid delivery.

Segmented vibration mechanism isolates motor from hand grip, reducing dentist control loss and patient anxiety during injection procedures.

A syringe holder secures the device with axial and radial fixation to enable stable one-handed operation.

A molding assembly uses a needle holding block to position the needle within the cavity, preventing clogging and ensuring flush integration.

A rotary injection molding apparatus uses dual mold sections with diametrically opposite gates to inject multiple melt streams simultaneously into a single cavity.

An integrated disinfection chamber uses UV radiation or heat to sterilize the fluid path, eliminating bacterial contamination risks during reservoir engagement.

Fluorescent seals slide within syringe barrels to create high-contrast indicators, eliminating measurement errors from poor visibility.

An inclined base positions a vial above a syringe mount to enable gravity-driven downward medicine flow.

Mechanically actuated sensor detects sleeve rotation to measure dosage accurately while eliminating optical sensors and reducing battery size requirements.

Internal plunger seat engagement prevents free drug flow during infusion by securing the pusher against elastomeric or plastic materials.

Segmenting the cap into a rigid housing and flexible insert reduces overall diameter while maintaining contact force for reliable contamination prevention.

Segmented retention mechanisms prevent accidental needle hub removal to resolve misalignment errors caused by smooth internal threads.

A dual chamber syringe assembly decouples needle retraction from the dosing plunger rod using a separate trigger element.

A filter needle uses a movable plunger to switch between filtration and injection paths within a single housing.

A flipping station transfers fluids between crimp capped vials using a metal-free spike and shielded pot design.

A powder mixing apparatus uses elastic force to drive solvent flow through a needle for automatic injection preparation.

A dual fluid injection hub connects two syringes to a single cannula entry point.

Flow disruptor controls foam movement to prevent air contamination and mushrooming during sclerotherapy dispensing.

Interchangeable gripping elements secure syringes of varying diameters within a blood treatment pump mechanism.

Segmenting the needle into small-gauge and large-bore sections resolves wire guide compatibility while minimizing bleeding.

Nested piston sections reduce device length to cartridge size, resolving the trade-off between portability and operational stroke requirements.

Quick-connect swivel connectors enable infinite rotation of the tubing line, preventing tangling and twisting caused by patient movement during fluid delivery.

Nested counter-rotating screws telescope into a syringe barrel to drive the plunger, resolving device complexity and biocompatibility constraints.

A one-piece tip cap integrates a flow restrictor and sleeve to secure fluid sealing engagement with medical dispenser discharge ports.

Modular pressure sensors with tactile feedback control shear stress to improve autologous fat graft viability without complex equipment.

A syringe safety device uses a rotating collar to retract the needle automatically after injection.

Radial collar moves high pressure seal to lock guidewire while preventing blood loss and stent damage.

A blood sample collection tube uses a trilayer coating system to prevent leaching and maintain vacuum integrity.

A syringe plunger rod features a grooved engagement member that rotates relative to the barrel to provide tactile feedback during injection.

A needle stick guard uses a three-position rocker to trap the sharp needle end and lock with the kit base.

A pressure metered syringe injector delivers stem cells into the subarachnoid space via a Dacron catheter.

Co-molding metal needle into synthetic resin syringe nozzle eliminates adhesive contamination and improves sealing reliability.

Plunger protrusions provide tactile and audible cues for volumetric increments, resolving measurement precision issues when visual observation is obscured.

A porous polypropylene closure element vents excess pressure through a tortuous internal path while blocking pathogens from entering the syringe.

Integrating the sealing element via injection molding prevents microbiological contamination during extended storage.

A chemical liquid injector executes a preliminary operation to open unidirectional valves before main injection.

An integrated catheter hub prevents blood spillage and shearing via spring-loaded retraction.

A two-member plunger retains a retraction spring in a compressed state until fluid delivery, then disengages to drive automatic needle retraction.

Color-coded alignment markers on a safety syringe ensure accurate needle orientation, reducing patient pain and preventing splashback during injection.

Rotational plunger dial with rib detents selects precise medication volumes, eliminating reading errors from closely spaced barrel markings.