US 4,900,322 A · Blood component pooling valve and kit

Abstract

A valve adapted for pooling blood components comprising a valve housing and a valve plug, with channels through the valve plug. By rotating the valve plug, selected ports in the valve housing may be brought into communication so that fluids may flow between the ports in communication. To facilitate transfusions of blood components, the valve may be used to pool multiple units of blood components and to resuspend masses of component particles, enabling them to be drawn out of the blood component bag. The risk of infection is decreased, and a more efficient use of the contents of the blood component bags is obtained. A method for producing a blood component pooling device is also disclosed. A containerized kit of the blood component pooling valve is provided which includes a rotary valve; a syringe adapted to be connected to the first port of the rotary valve; hoses, syringe fitting, hypodermic needle, and plastic bag needle to connect the other three ports to a capped vial of sterile saline solution, and a blood component pooling bag respectively; a sealed vial containing a sterile saline solution; a sterile blood component pooling bag; and a sterile sealed packet containing the kit elements.

Claims23

Dependent claims

A method of producing a blood component pooling device for pooling platelets or cryoprecipitates, the method comprising:

(a) providing a valve comprising:
a valve housing having a bore extending partly therethrough that is bounded by a surface of revolution that is defined by a side wall of the housing, said housing having four ports opening into its bore through the side wall of the housing;
and a valve plug rotatably mounted in the bore of said housing, and having two non-intersecting channels extending therethrough, said channels being arranged to that by rotation of the valve plug a first port, with a syringe fitting, may be brought into exclusive communication with each of the other ports so that fluids may flow only between the first port and the port in communication therewith;
(b) connecting a syringe to the first port;
(c) connecting a first hose to a second port, said first hose being connected at its second end to a terminal hypodermic needle;
(d) connecting a second hose to a third port said second hose being connectable at its second end to a blood component pooling bag;
and
(e) connecting a third hose to a fourth port, said third hose being connected at its second end to a plastic bag needle insertable into a blood component bag containing platelets or cryoprecipitates.

5 more elements

Dependencies are inferred from the claim text.

Blood component pooling valve and kit

Life of this patent

Blood component pooling valve and kit

Life of this patent

Abstract

Claims23