Haemonetics Corporation

Richard M Lueptow

Donald W Schoendorfer

Jonathan D Schiff

Richard Plaisted

Jeffrey J Peterson

A disposable manifold and valve for fluid processing are claimed in which a manifold provides a plurality of sterile paths for directing the flow of fluids. A rotatable valve employs a cam to control the flow of fluids through the manifold. The valve and manifold system are suited for the processing of blood and particularly for the washing of shed blood retrieved during surgery.

Disposable manifold and valve

A cell washing method and apparatus which utilizes centrifugation to separate blood components in a flexible bag. The less dense separated components e.g., supernatant, is expressed from the bag by centrifugal force acting on a plate adjacent the bag and the more dense component e.g., RBC's, remains. The bag is oriented at a double angle in the centrifuge so that less dense component accumulates at one location and more dense at a second location diagonally opposite the first location, thus facilitating removal of the less dense and washing of the more dense component.

Blood processing system for cell washing

A sealable body of flexible material having a body 10 with frangible seams 20 in the body joined at an apex 22. A closure seam 24 transversely intersects the apex 22. The closure seam may be ruptured at the apex and the body torn along the frangible seams to separate it from its contents.

Apparatus for collecting, storing and dispensing frozen blood plasma

A blood donation unit in which a phlebotomy needle is coupled on one conduit to a source of anticoagulant contained in a flexible bag and on another conduit to a flexible collection bag. The anticoagulant bag and collection bag are placed in a chamber within which a vacuum is created, preferably by a hand pump operated by the donor. A rigid plate is disposed between the two bags. The blood flow from the donor is maintained at an adaquate flow level by the donor's pumping which provides a pressure differential between the bags and the needle. The whole blood is mixed with anticoagulant immediately after passing through the phlebotomy needle. The ratio of whole blood to anticoagulant is independent of the volume of whole blood collected and is fixed by the ratio of the surface areas of opposing bag surfaces at the interface with the plate.

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Allston, MA, United States of America

Richard M Lueptow