Connector for transferring fluid and method of use

1. A connector for transferring fluid, the connector comprising:

a housing having a first port, a second port configured to accept an actuator, a third port, and an internal chamber fluidically coupled to the first, second, and third ports; and

a first valve element having a first position and a second position within the internal chamber, the first valve element comprising a head portion having at least one notch and a body portion having a cavity with a perimeter, the head portion configured to seal the second port when the first valve element is in the first position, the body portion configured to seal the perimeter of the cavity to the internal chamber to separate the internal chamber into an air chamber and a liquid chamber;

wherein the housing further comprises a passage from the air chamber to an outside of the housing; and

wherein the liquid chamber is continuously coupled to the first and third ports regardless of the position of the first valve element.

2. The connector of claim 1 , wherein:

the actuator comprises a lumen;

the first valve element is configured such that introduction of the actuator into the second port displaces the first valve element to the second position, thereby opening a fluid path from the lumen of the actuator to the liquid chamber, and removal of the actuator from the second port allows the first valve element to move to the first position; and

the first valve element is further configured such that the air chamber has a first air volume when the first valve element is in the first position and a second air volume when the first valve element is in the second position, the second air volume being less than the first air volume.

3. The connector of claim 2 , wherein the housing and first valve element are configured such that the liquid chamber has a first liquid volume when the first valve element is in the first position and a second liquid volume when the actuator is introduced into the second port, the second liquid volume being larger than the first liquid volume.

4. The connector of claim 3 , further comprising a second valve element disposed between the first port and the internal chamber, the second valve element configured to allow fluid to flow from the first port to the internal chamber while resisting flow from the internal chamber to the first port, such that removal of the actuator from the second port causes the liquid volume to expel fluid through the third port.

5. The connector of claim 2 , wherein the actuator comprises a male Luer fitting.

6. The connector of claim 5 , wherein the first port is configured to accept a male Luer fitting.

7. An intravenous (IV) set, comprising:

a connector comprising:

a housing having a first port, a second port configured to accept an actuator, a third port, and an internal chamber fluidically coupled to the first, second, and third ports; and

a first valve element having a first position and a second position within the internal chamber, the first valve element comprising a head portion having at least one notch and a body portion having a cavity with a perimeter, the head portion configured to seal the second port when the first valve element is in the first position, the body portion configured to seal the perimeter of the cavity to the internal chamber to separate the internal chamber into an air chamber and a liquid chamber;

wherein the housing further comprises a passage from the air chamber to an outside of the housing; and

wherein the liquid chamber is continuously coupled to the first and third ports regardless of the position of the first valve element;

a first tube coupled to the first port; and

a second tube coupled to the third port.

8. The IV set of claim 7 , further comprising a first fitting configured to couple to an IV container, wherein the first tube has a first end that is coupled to the first port and a second end that is coupled to the first fitting.

9. The IV set of claim 8 , further comprising a second fitting, wherein the second tube has a first end that is coupled to the third port and a second end that is coupled to the second fitting.

10. The IV set of claim 9 , wherein the second fitting comprises a Luer fitting.

11. The IV set of claim 7 , wherein the first and second tubes are bonded to the first and third ports, respectively.

12. A method of introducing a second medical fluid into a flow of a first medical fluid, the method comprising the steps of:

coupling a first source containing the first medical fluid to a first port of a connector further comprising a second port configured to accept an actuator, a third port, an internal chamber fluidically coupled to the first, second, and third ports, a first valve element having a first position and a second position within the internal chamber, the first valve element comprising a head portion having at least one notch and a body portion having a cavity with a perimeter, the head portion configured to seal the second port when the first valve element is in the first position, the body portion configured to seal the perimeter of the cavity to the internal chamber to separate the internal chamber into an air chamber and a liquid chamber, the air chamber having a first air volume when the first valve element is in the first position and a second air volume when the first valve element is in the second position, the second air volume being less than the first air volume, the liquid chamber having a first liquid volume when the first valve element is in the first position and a second liquid volume when the actuator is introduced, the second liquid volume being larger than the first liquid volume, wherein the housing further comprises a passage from the air chamber to an outside of the housing, and wherein the liquid chamber is continuously coupled to the first and third ports regardless of the position of the first valve element;

coupling the third port to a recipient;

allowing the first medical fluid to flow from the first source to the recipient;

introducing an actuator having a lumen that is fluidically coupled to a second source containing the second medical fluid into the second port, thereby displacing the first valve element to the second position and opening a fluid path from the source of the second fluid to the liquid chamber; and

causing the second medical fluid to flow from the second source through the lumen into the liquid chamber.

13. The method of claim 12 , further comprising the step of:

removing the actuator from the second port, thereby allowing the first valve element to allows the first valve element to move to the first position.

14. The method of claim 13 , wherein the connector further comprises a second valve element disposed between the first port and the internal chamber, the second valve element configured to allow fluid to flow from the first port to the internal chamber while resisting flow from the internal chamber to the first port, such that removal of the actuator causes the liquid volume to expel fluid through the third port.