Multi-valve injection/aspiration manifold with needleless access connection
View Patent ↗An IV manifold includes a plurality of injection/aspiration ports including a needleless access port (NAC). A check valve included in the manifold is generally located between injection ports. A two-way aspiration can be provided by the NAC having a single elongate valve element including a plug at one end. The elongate valve element has properties for resiliently and sealingly biasing the plug into an aperture of the NAC. In use, the plug is mechanically displaced by insertion of a male Luer for injection or aspiration.
1. A manifold adapted for use with an intravenous (IV) line, comprising:
a housing comprising a first port, a second port, and a flow path between the first and second ports;
a first check valve disposed within the flow path between the first and second ports and configured to prevent flow in the flow path to travel past the first check valve in a direction from the second port toward the first port;
a third port coupled to the housing, in fluid communication with the flow path, and positioned between the first port and the first check valve; and
a valve element disposed between the third port and the first port and between the third port and the first check valve and configured to prevent flow toward the third port from the flow path, wherein the valve element has an inside surface toward the flow path, and the housing is configured such that the flow path extends along the inside surface of the valve element such that a fluid flowing from the first port to the second port washes the inside surface of the valve element.
2. The manifold of claim 1 , wherein:
when a first IV line is coupled to the first port and filled with a fluid, there is a first pressure in the fluid at the first port;
when a second IV line is coupled to the second port and filled with a fluid, there is a second pressure in the fluid at the second port;
when a reservoir is coupled to the third port and filled with a fluid, there is a third pressure in the fluid at the third port;
the manifold is configured such that when the first pressure is greater than the second pressure, fluid will flow from the first IV line into the second IV line and not into the reservoir, and when the first pressure is less than both the second and third pressures, fluid will flow from the reservoir into the first IV line and not into the second IV line.
3. The manifold of claim 1 , further comprising a fourth port coupled to the housing, in fluid communication with the flow path and is between the first check valve and the second port.
4. The manifold of claim 3 , further comprising a second valve element disposed between the fourth port and the first check valve and between the fourth port and the second port and configured to prevent flow toward the fourth port from the flow path.
5. The manifold of claim 4 , wherein:
the second valve element has an inside surface toward the flow path; and
the housing is configured such that the flow path contacts the inside surface of the second valve element such that a fluid flowing from the first port to the second port washes the inside surface of the second valve element.
6. The manifold of claim 4 , further comprising a fifth port coupled to the housing, in fluid communication with the flow path and is between first check valve and the second port, wherein the fifth port comprises a needleless connector configured such that fluid may flow in either direction through the fifth port when a mating needleless connector is coupled to the fifth port.
7. The manifold of claim 6 , wherein the fifth port is configured to accept a luer fitting.
8. The manifold of claim 1 , wherein the valve element inside surface is concave.
9. The manifold of claim 1 , wherein the flow path comprises a U-shaped cross-sectional configuration.
10. The manifold of claim 1 , wherein the housing is elongate and extends along an axis.
11. A intravenous (IV) set, comprising:
a housing comprising a first port, a second port, and a flow path between the first and second ports;
a first check valve disposed within the flow path between the first and second ports and configured to prevent flow in the flow path to travel past the first check valve in a direction from the second port toward the first port;
a third port coupled to the housing, in fluid communication with the flow path, and positioned between the first port and the first check valve;
a first IV line coupled at a first end to the first port; and
a valve element disposed between the third port and the first port and between the third port and the first check valve and configured to prevent flow toward the third port, wherein the valve element has an inside surface toward the flow path, and the housing is configured such that the flow path contacts the inside surface of the valve element such that a fluid flowing from the first port to the second port washes the inside surface of the valve element.
12. The IV set of claim 11 , further comprising a first fitting coupled to a second end of the first IV line and configured to couple to a container that contains an IV solution.
13. The IV set of claim 11 , further comprising:
a second IV line coupled at a first end to the second port; and
a second fitting coupled to a second end of the second IV line.
14. The IV set of claim 11 , further comprising a fourth port coupled to the housing, in fluid communication with the flow path and is between the first check valve and the second port.
15. The IV set of claim 14 , further comprising a second valve element disposed between the fourth port and the first check valve and between the fourth port and the second port and configured to prevent flow toward the fourth port from the flow path.
16. The IV set of claim 15 , wherein:
the second valve element has an inside surface toward the flow path; and
the housing is configured such that the flow path contacts the inside surface of the second valve element such that a fluid flowing from the first port to the second port washes the inside surface of the second valve element.
17. The IV set of claim 15 , further comprising a fifth port coupled to the housing, in fluid communication with the flow path and is between first check valve and the second port, wherein the fifth port comprises a needleless connector configured such that fluid may flow in either direction through the fifth port when a mating needleless connector is coupled to the fifth port.
18. The IV set of claim 15 , wherein the valve element inside surface is concave.
19. The IV set of claim 15 , wherein the flow path comprises a U-shaped cross-sectional configuration.
20. The IV set of claim 15 , wherein the housing is elongate and extends along an axis.