A - Human Necessities – 61 – J
Patent
A - Human Necessities
61
J
128/105, 62/6
A61J 1/05 (2006.01) A61M 1/02 (2006.01) F25C 1/22 (2006.01)
Patent
CA 1336380
Disclosed is an improved apparatus and method for collecting, freezing and removing a liquid such as blood or blood components, and particularly blood plasma. In accordance with the present invention, a container (16) for blood plasma is defined by a pair of substantially flat, flexible opposing sidewalls (40, 42) which are substantially adjacent when the container is empty. The sidewalls are peripherally sealed together to define an interior compartment, and the side seals (44, 46) converge toward one end (48) of the container. After a selected quantity of plasma is collected in the container, the filled container is formed and frozen in a wedge-shaped configuration, with the opposed sidewalls (40,42) converging toward the end of the container. An air space (82) may be provided in the top of the container so that a knife (86) may be easily inserted into the frozen container without contacting the frozen liquid (88) therein. Slight warming of the container then permits the frozen contents to be removed efficiently as a single slug. Also disclosed is a form (60) for shaping a container as described above into a wedge-shape for freezing. The form includes a pair of rigid, perforated walls (62, 66) hinged together at one end (64) and configured to receive a container therebetween. The rigid walls of the form are disposed to shape the container walls into a converging configuration during freezing.
614435
Glash Dean M.
Smith Sidney T.
Baxter International Inc.
Sim & Mcburney
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