Infusion Syringes TRIZ Cases

A needle guard body moves proximally during insertion to shield the tip and lock out upon withdrawal.

Heating and pressing a preform section forms a bypass channel, eliminating complex tooling requirements and reducing particle formation during production.

Nested sleeves enable precise insertion of haemostats into small apertures without surgical widening, resolving access contradictions.

A drug delivery device integrates a movable control element to lock and unlock the needle cap assembly for safe operation.

A self-destructive syringe uses a core rod ratchet mechanism to prevent re-drawing after injection.

A 0.3-1.4 mm protrusion gap prevents drug leakage and subcutaneous penetration during vaccine administration.

A tubular dose setting mechanism uses threaded engagement between coaxial members to convert rotation into precise axial displacement.

A dispensing device assembly method connects parts downstream within laminar airflow to maintain clean conditions.

A capacitive sensor detects reservoir holder position via electrical field interactions within an injection device housing.

Segmented walls resolve the contradiction between easy filling and infection risk by allowing multiple refills while preventing accidental piercing.

A shielded cartridge and peristaltic pump deliver radiopharmaceuticals via controlled fluid flow.

Segmented protective packaging blocks premature sleeve movement during filling, preventing needle wastage and enabling safe reuse for patient injections.

A chemical fluid injection device uses a spring-driven needle holder and sensors to verify insertion before administration.

A pivot trigger mechanism actuates an aerosol can valve while covering the holder opening.

Hard central body and soft ribbed jacket resolve sealing friction trade-offs for gentle medication delivery.

A syringe gasket design creates internal channels that guide sterilizing gas to the inner barrel wall.

An asymmetric ridge design on a cylindrical cover body enables effortless needle rotation without wrist twisting, preventing accidental pricking of aged users.

Nested fluid connector design prevents unintentional disconnection by restricting radial displacement of elastic engagement plates within an outer shell.

Replacing saline with pure water and alternating slow rapid mixing cycles stabilizes Montanide emulsions while reducing adverse reactions.

An anti-clogging spray tip maintains separate fluid paths to prevent premature coagulation during minimally invasive tissue sealant delivery.

A locking clip assembly uses a spring-loaded collar to bind an insertion needle securely within a catheter housing.

Threaded lug engages bung sidewall track to convert elastic expansion energy into rotational motion, preventing outward plunger displacement.

A removable device with L-shaped claws and protruding teeth secures medical containers on a preparation machine worktop.

Tapered barrel geometry passively locks the syringe plunger under negative pressure, eliminating complex latches and enabling one-handed operation.

A medical syringe incorporates a contamination barrier element to maintain sterile closure integrity.

An anti-rotation sleeve prevents unwanted container rotation relative to the port, protecting the plug-in connection from accidental release.

Segmented plunger sections match tapered barrel grooves to distribute reaction pressure, enabling effortless viscous liquid discharge without residual waste.

A transfer device connects a fluid source and pressurizing unit to an infusion reservoir via defined flow paths.

A dose setting assembly uses a removable member to hold a plunger rod in position within a medical injection barrel.

An automated apparatus uses a roto-translating gripping device to unscrew syringe needles without manual intervention.

Compartmentalized packaging isolates the oxygen absorber to reduce internal gas levels, preventing oxidative degradation of pre-filled syringes.

A connection device accommodates a hollow needle within an elastically movable second member to expose the tip during use.

A radial friction element wedges between a telescoping shaft and reservoir wall to prevent plunger rotation during drug delivery.

A force actuated injection device uses a retractable needle guard and resistance band to unlock grip movement for medication delivery.

Rotating locking cam secures suture anchor configuration within drainage catheter hub, resolving manipulation difficulty and slippage issues.

A syringe plunger integrates a secondary reservoir and piercing member to eject antimicrobial fluid after primary flush delivery.

A syringe assembly uses a spring-loaded plunger to retract the needle into the housing after injection.

A tumescent contravenom solution delivers vasoconstrictors and Varespladib to neutralize venom at the bite site.

Nested tube assembly with magnetic mount and attachment device maintains hermetic sealing during minimally invasive tissue prosthesis insertion.

A multi-needle injection device delivers therapeutic agents through parallel needles.

Chamfered syringe cone edges create surface contact to prevent detachment during sterilization.

A deformable thermoplastic elastomer stopper with a lateral cavity reduces break loose force, preventing silicone particle contamination in prefilled injectors.

A vacuum-driven syringe infuser uses a reciprocating arm to deliver medicaments without external power.

Adapter element decouples needle positioning from base attachment, eliminating gas release risks during gluing.

Complementary engaging surfaces between soft cover and shield prevent pop-off displacement during sterilization without mechanical interlocks.

Segmentation and flexible shells resolve sterilization compatibility issues while preventing needle-stick injuries.

Asymmetric non-luer connectors with distinct dimensions prevent standard luer misconnections, reducing patient harm risks.

A flexible introducer assembly uses a polyurethane dilator to maintain the curved configuration of the distal sheath during navigation.

A plunger rod assembly uses dual locking mechanisms to control axial and radial movement relative to a finger rest interface.

A prefilled syringe needle assembly uses ultrasonic welding to bond the closure element and shielding sheath into a permanent sterile barrier.