Adaptor system for use with a syringe

An adaptor system for use in connection with a syringe having a fluid carrying body, the system comprising:

• a syringe fitting having a hollow element protruding therefrom and being attachable to said syringe such that said hollow element is in fluid communication with said fluid carrying body;
• an adaptor member having a port therein, said port having an interior surface configured for fluid-tight engagement with the outer surface of said hollow element;
• and
• means for retaining said hollow element in fluid-tight engagement with said adaptor port, said retaining means comprising at least one protrusion on said adaptor member and a T-shaped slot in said syringe fitting corresponding to each said protrusion such that when said protrusions are simultaneously aligned with their corresponding T-shaped slot, said hollow element may be axially inserted into said adaptor port to establish said fluid-tight seal therewith and be selectively rotated in two radial directions relative to said syringe fitting while maintaining said fluid-tight seal therebetween.