Syringe Adapter Resilient Locking for Closed Fluid Transfer

The patent introduces a closed transfer device as an intermediary system between the vial and syringe. This device includes a adapter that connects to the vial and a syringe interface, creating a closed pathway for drug transfer. The intermediary device eliminates direct needle exposure to the atmosphere during transfer, preventing drug leakage while maintaining the essential function of drug reconstitution.

The patent creates a closed, controlled environment for drug transfer that isolates the hazardous drug from the surrounding atmosphere. The closed transfer device maintains a sealed system during the entire transfer process, effectively creating an inert environment that prevents drug aerosolization and atmospheric contamination, thereby protecting healthcare providers from exposure.

The patent employs a resilient locking member that can dynamically transition between locked and unlocked states. This dynamic component allows the connector to be easily connected and disconnected while maintaining reliable sealing when locked. The resilience of the locking member enables repeated operation without compromising sealing integrity, as it can flex to accommodate connection forces and then return to its sealed position.

The resilient locking member inherently provides cushioning by absorbing connection forces through its elasticity. When the connector is being assembled, the resilient material flexes to accommodate misalignments and forces, then maintains a consistent sealed position. This beforehand cushioning effect protects against forces that might otherwise compromise the sealing reliability while enabling easy operation.