Fluid manifold control device
View Patent ↗A manifold is disclosed which includes a manifold body that defines a main lumen, a primary injection line and a port. A check valve system is also provided which permits flow from the primary injection line to the main lumen while selectively preventing back flow from the main lumen to the primary injection line and, simultaneously, permitting flow from the port to the primary injection line while preventing back flow from the primary injection line to the port.
1. A manifold system for use with a syringe, a catheter, and a fluid source, the system comprising:
a manifold body defining;
a primary injection line extending through the manifold body from a first end in fluid communication with a junction and a second end adapted for fluid communication with the syringe;
a main lumen extending through the manifold body from a first end in fluid communication with the junction and a second end adapted for fluid communication with the catheter, wherein the primary injection line and the main lumen are approximately collinear through the manifold body;
a port extending though the manifold body from a first end in fluid communication with the junction and a second end adapted for fluid communication with the fluid source, wherein the port is disposed approximately perpendicular to the manifold body;
a valve body disposed in the junction and having a first lumen and a second lumen in fluid communication with the first lumen, the valve body also having a third lumen intersecting the first lumen, wherein the first lumen and the second lumen are connected to form a T-connection;
a first check valve disposed in an end of the first lumen and oriented to permit fluid flow away from a central portion of the valve body,
a second check valve disposed in the second lumen and oriented to permit flow toward the central portion of the valve body,
the valve body being placeable in a first position in which the valve body first lumen extends between the primary injection line first end and the main lumen first end with the first check valve adjacent the main lumen first end, and the valve body second lumen fluidly communicates with the port, thereby to allow fluid flow from the port to the primary injection line while preventing back flow from primary injection line and main lumen to the port, and to allow fluid flow from the primary injection line to the main lumen, while preventing back flow from the main lumen to the primary injection line and port,
the valve body being further placeable in a second position in which the valve body second lumen fluidly communicates with the primary injection line first end and the valve body first lumen fluidly communicates with the port with the second check valve adjacent the port, thereby to allow fluid flow from the primary injection line to the port while preventing back flow from the port to the primary injection line,
the valve body being further placeable in a third position in which the valve body third lumen extends between the primary injection line first end and the main lumen first end and in which none of the first, second, or third lumens are in fluid communication with the port.
2. The manifold system of claim 1 , in which the third lumen is free of check valves.
3. The manifold system of claim 1 wherein the first lumen and the third lumen are connected at approximately a 45 degree angle.