Self-priming needle-free “Y”-adapter

A needle-free “Y”-adapter for use with intravenous delivery systems comprising:

• a) a “Y”-shaped housing having an inlet passageway, an outlet passageway, and an injection access passageway, each of said passageways being defined by an internal wall of said housing and comprising an interior end and an exterior end, wherein said interior ends of said passageways are in fluid communication and intersect with each other at a common juncture, further wherein the internal wall of said housing that defines said injection access passageway comprises an oval or elliptical cross-section at said juncture to assist in preventing air from being, trapped inside the housing when the adapter is initially connected to the intravenous delivery system;
• b) an inlet port located at said exterior end of said inlet passageway;
• c) an outlet port located at said exterior end of said outlet passageway;
• d) an injection access port located at said exterior end of said injection access passageway;
• and
• e) a needle-free access device located in said injection access passageway adjacent to said injection access port.

A needle-free “Y”-adapter for use with intravenous delivery systems, said needle-free “Y”-adapter having a “Y”-shaped housing that comprises:

• a) an inlet passageway which terminates at a proximal end in an inlet port, said inlet port being configured to connect to IV set tubing;
• b) an outlet passageway axially aligned with said inlet passageway and which terminates at a distal end in an outlet port, said outlet port being configured to connect to IV set tubing:
• c) an injection access passageway connected at a juncture to said inlet passageway at an acute angle, said injection access passageway terminating at a proximal end in an injection access port, said injection access port comprising a female luer, said injection access passageway terminating at a distal end directly adjacent a distal end of said inlet passageway and comprising a needle-free access device, and an internal wall of said housing defines the distal end of said injection access passageway, wherein said internal wall has a cross-section of oval or elliptical shape that assists to prevent air from being trapped inside the housing at the juncture when the adapter is initially connected to the intravenous delivery system, and
• d) a needle-free access device located in said injection access passageway adjacent to said injection access port, said needle-free access device comprising a valve formed by a movable piston biased against a valve seat, said movable piston being biased against said valve seat by a coil spring.